mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-27 07:03:54 +02:00
11862 lines
365 KiB
Diff
11862 lines
365 KiB
Diff
diff -urN uClibc/ldso-0.9.24/COPYRIGHT uClibc.ldso.24/ldso-0.9.24/COPYRIGHT
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--- uClibc/ldso-0.9.24/COPYRIGHT 1969-12-31 18:00:00.000000000 -0600
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+++ uClibc.ldso.24/ldso-0.9.24/COPYRIGHT 2001-04-23 12:43:53.000000000 -0500
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@@ -0,0 +1,49 @@
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+/*
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+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald, David Engel,
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+ * Hongjiu Lu and Mitch D'Souza
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+ *
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+ * All rights reserved.
|
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+ *
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+ * Redistribution and use in source and binary forms, with or without
|
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+ * modification, are permitted provided that the following conditions
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+ * are met:
|
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+ * 1. Redistributions of source code must retain the above copyright
|
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+ * notice, this list of conditions and the following disclaimer.
|
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+ * 2. The name of the above contributors may not be
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+ * used to endorse or promote products derived from this software
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+ * without specific prior written permission.
|
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
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+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
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+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
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+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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+ * SUCH DAMAGE.
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+ */
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+
|
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+/* Notice of general intent:
|
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+ *
|
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+ * The linux operating system generally contains large amounts of code
|
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+ * that fall under the GNU General Public License, or GPL for short.
|
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+ * This file contains source code that by it's very nature would always
|
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+ * be linked with an application program, and because of this a GPL
|
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+ * type of copyright on this file would place restrictions upon the
|
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+ * distribution of binary-only commercial software. Since the goal of
|
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+ * the Linux project as a whole is not to discourage the development and
|
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+ * distribution of commercial software for Linux, this file has been
|
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+ * placed under a more relaxed BSD-style of copyright.
|
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+ *
|
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+ * It is the general understanding of the above contributors that a
|
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+ * program executable linked to a library containing code that falls
|
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+ * under the GPL or GLPL style of license is not subject to the terms of
|
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+ * the GPL or GLPL license if the program executable(s) that are supplied
|
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+ * are linked to a shared library form of the GPL or GLPL library, and as
|
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+ * long as the form of the shared library is such that it is possible for
|
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+ * the end user to modify and rebuild the library and use it in
|
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+ * conjunction with the program executable.
|
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+ */
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diff -urN uClibc/ldso-0.9.24/Makefile uClibc.ldso.24/ldso-0.9.24/Makefile
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--- uClibc/ldso-0.9.24/Makefile 1969-12-31 18:00:00.000000000 -0600
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+++ uClibc.ldso.24/ldso-0.9.24/Makefile 2003-11-06 16:38:45.000000000 -0600
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@@ -0,0 +1,52 @@
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+# Makefile for uClibc
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+#
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+# Copyright (C) 2000,2001 Erik Andersen <andersen@uclibc.org>
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+#
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+# This program is free software; you can redistribute it and/or modify it under
|
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+# the terms of the GNU Library General Public License as published by the Free
|
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+# Software Foundation; either version 2 of the License, or (at your option) any
|
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+# later version.
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+#
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+# This program is distributed in the hope that it will be useful, but WITHOUT
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+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
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+# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
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+# details.
|
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+#
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+# You should have received a copy of the GNU Library General Public License
|
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+# along with this program; if not, write to the Free Software Foundation, Inc.,
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+# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
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+#
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+# Derived in part from the Linux-8086 C library, the GNU C Library, and several
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+# other sundry sources. Files within this library are copyright by their
|
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+# respective copyright holders.
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+
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+TOPDIR=../
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+include $(TOPDIR)Rules.mak
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+
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+ALL_SUBDIRS = ldso libdl
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+
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+
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+all: headers
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+ifeq ($(strip $(BUILD_UCLIBC_LDSO)),y)
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+ $(MAKE) -C ldso;
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+else
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+ echo "Not building ld-uClibc"
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+endif
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+
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+shared:
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+ifeq ($(strip $(BUILD_UCLIBC_LDSO)),y)
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+ $(MAKE) -C libdl;
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+else
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+ echo "Not building libdl"
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+endif
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+
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+headers:
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+ $(LN) -fs $(TOPDIR)../include/elf.h include/
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+ $(LN) -fs ../ldso/$(TARGET_ARCH)/boot1_arch.h include/
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+ $(LN) -fs ../ldso/$(TARGET_ARCH)/ld_syscalls.h include/
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+ $(LN) -fs ../ldso/$(TARGET_ARCH)/ld_sysdep.h include/
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+
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+clean:
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+ set -e ; for d in $(ALL_SUBDIRS) ; do $(MAKE) -C $$d $@ ; done
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+ -find . -name '*~' | xargs $(RM)
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+ $(RM) include/elf.h include/boot1_arch.h include/ld_syscalls.h include/ld_sysdep.h
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diff -urN uClibc/ldso-0.9.24/README uClibc.ldso.24/ldso-0.9.24/README
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--- uClibc/ldso-0.9.24/README 1969-12-31 18:00:00.000000000 -0600
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+++ uClibc.ldso.24/ldso-0.9.24/README 2001-05-31 16:23:20.000000000 -0500
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@@ -0,0 +1,841 @@
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+
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+Apr 20, 2001 -- Manuel Novoa III
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+
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+Inital port for uClibc from debian ld.so_1.9.11-9.tar.gz.
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+
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+Removed a.out support.
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+
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+****************** original ld.so.lsm file **************************
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+Begin3
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+Title: Linux shared, dynamic linker and utilities.
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+Version: 1.9.11
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+Entered-date: 01MAY99
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+Description: This package contains ld.so, ld-linux.so, ldconfig,
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+ ldd and libdl.
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+Keywords: dynamic linker, shared library, ld.so, ld-linux.so,
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+ ldconfig, ldd, libdl
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+Author: david@ods.com (David Engel)
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+Maintained-by: david@ods.com (David Engel)
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+Primary-site: tsx-11.mit.edu /pub/linux/packages/GCC
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+ ld.so-1.9.11.tar.gz
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+Alternate-site: sunsite.unc.edu /pub/Linux/GCC
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+ ld.so-1.9.11.tar.gz
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+Platform: Linux 2.0.0 or later.
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+Copying-policy: Copyrighted but freely distributable.
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+End
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+*********************************************************************
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+ Original README starts here
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+*********************************************************************
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+
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+This package contains my ELF dynamic linkers (ld-linux.so.1), dynamic
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+linker library (libdl.so.1) and utilities (ldconfig and ldd) for Linux.
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+
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+You need Linux kernel 2.0.0 or later with ELF support compiled in
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+(i.e. not loaded as a module) to use this package.
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+
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+The dynamic linker is used to bootstrap programs and load shared
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+libraries at startup. The dynamic linker library is used to
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+dynamically load shared libraries after a program is running.
|
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+Ldconfig is used to automatically update the symbolic links to shared
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+libraries and build the cache file used by the dynamic linker. Ldd is
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+used to list the shared libraries used by a program.
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+
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+Please see the included manual pages for further details.
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+
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+To install, simply run "sh instldso.sh" as root. Ready-to-go versions
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+of all end-products are provided so nothing should need to be compiled
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+or linked. If you are still using libc5 as your primary development
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+library, you should use the "--devfiles" option when running
|
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+instldso.sh to install the file needed to compile with libdl.
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+
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+ELF versions of gcc, binutils and libc are now required to compile
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+everything, including the old, unsupported, a.out dynamic linker.
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+Finally, an optimization level of O2 or higher must be used to compile
|
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+ld-linux.so and libdl.so due the use of inline functions.
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+
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+Notable contributors to this package include Eric Youngdale, Peter
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+MacDonald, Hongjiu Lu, Linus Torvalds, Lars Wirzenius, Mitch D'Souza,
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+Rik Faith, Andreas Schwab and Adam Richter (not necessarily in that
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+order).
|
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+
|
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+###################### IMPORTANT NOTICES #############################
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+
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+A.OUT SUPPORT:
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+
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+As of ld.so-1.9.0, the old, a.out dynamic loader is no longer
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+officially supported. The code is still included and built, but I
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+make no promises that it will work. I will accept patches for it,
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+but they will not be tested by me.
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+
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+GLIBC (AKA LIBC6) SUPPORT:
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+
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+As of ld.so-1.9.0, the main focus of this package is to ease the
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+transition to libc6. No significant, new features are expected to be
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+added. If you need new features, switch to libc6.
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+
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+Except for libpthread.so, the sonames of the core libraries provided
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+with libc6 have been chosen so they do not conflict with those
|
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+provided by libc5 and ld.so. However, the current plan is not use
|
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+new, nonconflicting sonames for other libraries such as ncurses and
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+X11. This presents two problems. First, libraries using the same
|
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+soname for both libc5 and libc6 can not be placed in the same
|
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+directory. Second, the dynamic linkers need to make sure not to load
|
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+a library for the wrong version of libc.
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+
|
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+The first problem is easy. Just move the old, libc5-based libraries
|
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+to new directories (e.g. /lib/libc5-compat, /usr/lib/libc5-compat,
|
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+etc.) and add those directories to /etc/ld.so.conf. Then install the
|
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+new, libc6-based versions in the standard places.
|
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+
|
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+The second problem is more difficult. Ideally, the dynamic linkers
|
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+would be changed to perform a complete dependency analysis on every
|
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+library to be loaded to make sure the wrong versions aren't used.
|
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+This approach doesn't seem worth the added complexity, especially
|
|
+since we now have symbol versioning for ELF libraries. Instead a
|
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+simpler approach will be used, at least initially.
|
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+
|
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+Ldconfig has been modified to perform a (currently simple) dependency
|
|
+analysis on libraries and to store an indication in /etc/ld.so.cache
|
|
+of whether a library is for libc5, libc6 or an unknown libc. The
|
|
+dynamic linkers then only need to make a simple check at run-time to
|
|
+make sure they don't load the wrong version of a library.
|
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+
|
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+The dynamic linker for libc5 provided in this package, has already
|
|
+been modified to use the new information in /etc/ld.so.cache. For
|
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+glibc versions 2.0.1 and earlier, the dynamic linker for libc6 needs
|
|
+the patch contained in glibc.patch. You should apply the patch and
|
|
+rebuild glibc before using the new ldconfig.
|
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+
|
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+As stated above, the dependency analysis currently done by ldconfig is
|
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+rather simple. Basically, it looks for the sonames used by the
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+various versions of libc, libm and libdl. For any approach using a
|
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+dependency analysis such as this to work, it is very important that
|
|
+shared libraries be built with complete dependency information. This
|
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+can be done by using the appropriate -l options when running 'gcc
|
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+-shared'. For example, when building libfoo.so which depends on libc
|
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+and libbar, you should add -lbar and -lc gcc command line.
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+
|
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+######################################################################
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+
|
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+Changes in version 1.9.11:
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+
|
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+ Fixed a bug in ld-linux.so where a reference to an
|
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+ undefined symbol could cause a segfault.
|
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+
|
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+ Added a clarification for LD_PRELOAD to the ld.so manual
|
|
+ page and added a symlink for ld-linux.so (Bug#33123).
|
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+
|
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+ Don't install ldd for Debian except for the m68k arch
|
|
+ because glibc 2.1 now includes it (Bug#35458).
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+
|
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+Changes in version 1.9.10:
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+
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+ Changed ldconfig to issue a warning and not overwrite a
|
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+ regular file with a symlink (Bug#30859).
|
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+
|
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+ Changed Debian packaging to conflict with and replace the
|
|
+ ldconfig package (Bug#29398).
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+
|
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+Changes in version 1.9.9:
|
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+
|
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+ Changed ld-linux.so and libdl.so to match glibc by not
|
|
+ allowing user preloads of system libraries into setu/gid
|
|
+ binaries unless the library itself is setuid.
|
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+
|
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+ Fixed problems in ld-linux.so on the sparc architecture
|
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+ (Juan Cespedes).
|
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+
|
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+Changes in version 1.9.8:
|
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+
|
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+ Changed ldconfig to allow the expected type for all
|
|
+ libraries in a directory to be optionally specified
|
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+ (Mark Phillips). See the ldconfig man page.
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+
|
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+ Changed ldconfig to use the same type names used in the
|
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+ change above when the -p option is used.
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+
|
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+Changes in version 1.9.7:
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+
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+ Changed ldd for m68k to use /lib/ld.so.1 instead of
|
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+ /lib/ld-linux.so.2.
|
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+
|
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+ Added support for dladdr to libdl.so (Eduard Gode).
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+
|
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+ Fixed a small memory leak in libdl.so (Richard Garnish).
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+
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+ Fixed a bug in ldconfig when the -l option was used on a
|
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+ filename without a '/' in it.
|
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+
|
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+ Updated the man pages (Bug#6404, Bug#9721, Bug#10652,
|
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+ Bug#13494 and Bug#14127). They could still use some work.
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+
|
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+ No longer install the info page since it's way out of date.
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+
|
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+ Fixed minor Debian packaging problems (Bug#13160,
|
|
+ Bug#15577 and Bug#19345).
|
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+
|
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+Changes in version 1.9.6:
|
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+
|
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+ Changed ldd to not use the glibc dynamic linker when run
|
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+ on a libc5-based shared library.
|
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+
|
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+ Added a -q option to ldconfig which causes warnings not
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+ to be printed (Bob Tinsley).
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+
|
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+ Dropped support for the Debian libdl1-dev package.
|
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+
|
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+ Changed ld-linux.so to be compilable with gcc 2.8.0 (Sven
|
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+ Verdoolaege)
|
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+
|
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+Changes in version 1.9.5:
|
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+
|
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+ Fixed a bug in ldd where ld-linux.so.2 was not called
|
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+ correctly when run on shared libraries.
|
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+
|
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+ Fixed a problem in the previous version where some
|
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+ Makefiles were not architecture independent.
|
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+
|
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+Changes in version 1.9.4:
|
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+
|
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+ Fixed a bug in ld.so introduced in the previous version
|
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+ which broke preloads.
|
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+
|
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+ Turned a.out support back on by default, at least for the
|
|
+ time being. There are no promises to keep it.
|
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+
|
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+Changes in version 1.9.3:
|
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+
|
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+ Fixed buffer overflow bugs in ld-linux.so and ld.so.
|
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+
|
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+ Changed the README file a little to clarify a couple of
|
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+ things.
|
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+
|
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+ Changed ldconfig to chroot to the specified directory when
|
|
+ the new -r option is used (Bob Tinsley).
|
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+
|
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+Changes in version 1.9.2:
|
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+
|
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+ Removed /usr/local/lib from the default /etc/ld.so.conf
|
|
+ for Debian (Bug#8181).
|
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+
|
|
+ Changed ldconfig to be 64-bit clean (H.J. Lu).
|
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+
|
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+Changes in version 1.9.1:
|
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+
|
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+ Changed ldconfig to try to determine which libc a
|
|
+ library is for even if it doesn't have an soname.
|
|
+
|
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+ Fixed a bug in ldconfig where an older library using
|
|
+ the glibc naming convention would be used instead of
|
|
+ a newer library.
|
|
+
|
|
+ Changed to ld-linux.so and libdl.so to not require the
|
|
+ libc5 headers in order to compile.
|
|
+
|
|
+ Changed ldconfig and ldd to be compilable with either
|
|
+ libc5 or libc6.
|
|
+
|
|
+Changes in version 1.9.0:
|
|
+
|
|
+ Changed to not build the old, a.out dynamic loader by
|
|
+ default.
|
|
+
|
|
+ Changed instldso.sh to require the --force option to
|
|
+ make sure users read the README file.
|
|
+
|
|
+ Changed instldso.sh to not install the libdl.so
|
|
+ development files unless the --devfiles option is used.
|
|
+
|
|
+ Changed instldso.sh to not strip binaries and libraries
|
|
+ if the --no-strip option is used.
|
|
+
|
|
+ Changed the Debian packaging to put the development files
|
|
+ which conflict with glibc in a new libdl1-dev package.
|
|
+
|
|
+ Changed ldd to use the glibc dynamic linker, if it is
|
|
+ available, when run on a shared library.
|
|
+
|
|
+ Changed ld-linux.so to print the load addresses of
|
|
+ libraries, ala glibc, when run by ldd.
|
|
+
|
|
+ Changed ld-linux.so to allow the libraries listed in
|
|
+ LD_PRELOAD to be separated by white space in addition to
|
|
+ colons.
|
|
+
|
|
+ Changed ld-linux.so to load the libraries listed in
|
|
+ LD_PRELOAD for setu/gid programs as long as they can be
|
|
+ loaded securely.
|
|
+
|
|
+ Changed ldconfig to update the symlinks for the dynamic
|
|
+ linkers.
|
|
+
|
|
+ Changed ldconfig to try to determine if an ELF library is
|
|
+ intended for libc5 or libc6 and save the infomation in the
|
|
+ cache. The mechanism used is rather simplistic and may
|
|
+ need to be enhanced.
|
|
+
|
|
+ Changed ldconfig to print the type of ELF library when
|
|
+ printing the cache.
|
|
+
|
|
+ Changed ld-linux.so to only load ELF shared libraries for
|
|
+ use with libc5 or an unknown libc.
|
|
+
|
|
+Changes in version 1.8.10:
|
|
+
|
|
+ Fixed a bug in ldconfig where a symlink could be used
|
|
+ instead of a regular file.
|
|
+
|
|
+ Fixed a Debian packaging problem for the sparc
|
|
+ architecture.
|
|
+
|
|
+Changes in version 1.8.9:
|
|
+
|
|
+ Changed ldconfig to only cache the symlinks it creates.
|
|
+ This make the behavior of the dynamic linkers consistent
|
|
+ with how they would behave if a cache was not used.
|
|
+
|
|
+ Changed ldconfig to cache the symlinks that it finds but
|
|
+ use the name of the symlink as the soname instead of the
|
|
+ actual soname.
|
|
+
|
|
+Changes in version 1.8.8:
|
|
+
|
|
+ Minor documentation updates to reflect recent changes.
|
|
+
|
|
+ Changed ld.so and ld-linux.so to perform more complete
|
|
+ validation on ld.so.cache before using it.
|
|
+
|
|
+ Changed ldconfig to accept libraries with inconsistent
|
|
+ sonames since glibc is going to use them. A warning is
|
|
+ still printed in debug mode.
|
|
+
|
|
+ Changed the install script to not strip _dl_debug_state
|
|
+ from ld-linux.so since gdb needs it.
|
|
+
|
|
+ More sparc fixes (Derrick Brashear).
|
|
+
|
|
+ Changed ldconfig to not issue a warning when a linker
|
|
+ script disguised as a shared library is found.
|
|
+
|
|
+ Fixed a bug in ld-linux.so where some registers were
|
|
+ not preserved on the first call to a function causing
|
|
+ problems for non-C-like languages (Tim Renouf).
|
|
+
|
|
+ Fixed a bug in ld-linux.so where global variables were
|
|
+ not always mapped correctly across dynamically loaded
|
|
+ libraries (Mikihiko Nakao).
|
|
+
|
|
+ Converted to new Debian source packaging format (Shaya
|
|
+ Potter).
|
|
+
|
|
+Changes in version 1.8.6/7:
|
|
+
|
|
+ Never released as some unofficial patches used these
|
|
+ version numbers.
|
|
+
|
|
+Changes in version 1.8.5:
|
|
+
|
|
+ Fixed a bug in ld.so introduced in the previous changes.
|
|
+
|
|
+Changes in version 1.8.4:
|
|
+
|
|
+ Changed ldconfig to completely ignore symbolic links.
|
|
+
|
|
+ Changed ldconfig to issue the warning concerning an
|
|
+ inconsistent soname in non-verbose mode.
|
|
+
|
|
+ Changed ld-linux.so back to not keep ld.so.cache mapped
|
|
+ at all times.
|
|
+
|
|
+ Changed Debian packaging to compress man pages, strip all
|
|
+ binaries (Bug#5125) and include a shlibs file.
|
|
+
|
|
+Changes in version 1.8.3:
|
|
+
|
|
+ Changed ld-linux.so to process LD_PRELOAD before
|
|
+ /etc/ld.so.preload.
|
|
+
|
|
+ Fixed a Debian packaging problem where libdl might not
|
|
+ be available if other packages were upgraded at the same
|
|
+ time (Debian Bug#4728).
|
|
+
|
|
+ Changed ldd to always exit with status 1 if any errors
|
|
+ occur (Debian Bug#4188).
|
|
+
|
|
+ Fixed some minor problems in instldso.sh (Mike Castle and
|
|
+ Wolfgang Franke).
|
|
+
|
|
+ Changed ldconfig to issue a warning in verbose mode when
|
|
+ skipping a library because the soname doesn't match.
|
|
+
|
|
+ More sparc fixes (Miguel de Icaza).
|
|
+
|
|
+ Don't link with -N when building ld.so (Alan Modra).
|
|
+
|
|
+ Changed ld-linux.so to better support position-dependant
|
|
+ libraries (NIIBE Yutaka).
|
|
+
|
|
+Changes in version 1.8.2:
|
|
+
|
|
+ Added a texinfo file for ld.so and libdl (Michael
|
|
+ Deutschmann).
|
|
+
|
|
+ Minor sparc and installation changes (Elliot Lee).
|
|
+
|
|
+ Added multiple architecture support for Debian (Leland
|
|
+ Lucius).
|
|
+
|
|
+ Changed libdl to better support RTLD_NEXT (Eric
|
|
+ Youngdale). Note: the exact meaning of ETLD_NEXT is
|
|
+ still not clear in all cases.
|
|
+
|
|
+ Removed some libc dependencies from libdl. Still need
|
|
+ to remove malloc and free.
|
|
+
|
|
+Changes in version 1.8.1:
|
|
+
|
|
+ Changed ld.so to be compiled as ELF. This also means
|
|
+ that ELF support is now required. A.out support is
|
|
+ still optional.
|
|
+
|
|
+ Changed ld-linux.so and libdl.so to use the rpath in the
|
|
+ executable instead of in the invoking shared library.
|
|
+
|
|
+ More m68k fixes (Andreas Schwab).
|
|
+
|
|
+ Various sparc fixes (Miguel de Icaza).
|
|
+
|
|
+ Changed ldcnnfig to ignore libraries ending in '~'.
|
|
+
|
|
+ Changed ldconfig to allow alternative conf and cache
|
|
+ files to be specified on the command-line.
|
|
+
|
|
+ Changed libdl.so to work when dlsym is passed a NULL
|
|
+ handle pointer.
|
|
+
|
|
+Changes in version 1.8.0:
|
|
+
|
|
+ Changed ld-linux.so to be more liberal when checking to
|
|
+ see if a library is already loaded. This should avoid
|
|
+ the duplicate loading problem for programs linkeed with
|
|
+ the -rpath option.
|
|
+
|
|
+ Various m68k fixes (Andreas Schwab).
|
|
+
|
|
+ Changed ld.so to only use LD_AOUT_LIBRARY_PATH and
|
|
+ LD_AOUT_PRELOAD and ld-linux.so to only use
|
|
+ LD_LIBRARY_PATH and LD_PRELOAD. LD_ELF_LIBRARY_PATH
|
|
+ and LD_ELF_PRELOAD are no longer supported.
|
|
+
|
|
+ Changed ld-linux.so to allow debugging of shared and
|
|
+ dynamically loaded libraries (H.J. Lu, Andreas Schwab).
|
|
+
|
|
+ Changed ld-linux.so to preload ELF shared libraries
|
|
+ listed in /etc/ld.so.preload. This allows secure
|
|
+ preloads, even for setuid/setgid programs.
|
|
+
|
|
+ Changed ld-linux.so to keep ld.so.cache mapped at all
|
|
+ times.
|
|
+
|
|
+ Changed ldconfig to allow #-style comments in ld.so.conf.
|
|
+
|
|
+ Removed various compiler warnings (Richard Sladkey and
|
|
+ David Engel).
|
|
+
|
|
+ Changed ldd to work on ELF shared libraries. This may
|
|
+ need a little more work.
|
|
+
|
|
+Changes in version 1.7.14:
|
|
+
|
|
+ Changed ldconfig to recognize ELF shared libraries
|
|
+ generated by post-2.6 versions of ld (Andreas Schwab).
|
|
+
|
|
+ Changed ldconfig to not remove stale links that do not
|
|
+ have a version number since they may be needed by ld.
|
|
+
|
|
+Changes in version 1.7.13:
|
|
+
|
|
+ Fixed a problem in ld-linux.so where a program linked
|
|
+ with a shared library that was not used could result in
|
|
+ a segmentation fault (H.J. Lu).
|
|
+
|
|
+Changes in version 1.7.12:
|
|
+
|
|
+ Fixed a problem in libdl.so where the wrong library
|
|
+ could be marked as global when RTLD_GLOBAL was used
|
|
+ (Lars Heete).
|
|
+
|
|
+ Installed dlfcn.h with libdl.so instead of requiring
|
|
+ it to be supplied with libc.
|
|
+
|
|
+ Removed support for libldso.a since it was nearly
|
|
+ impossible to use anyway.
|
|
+
|
|
+ Changed ldd to detect when the program being checked
|
|
+ exited abnormally.
|
|
+
|
|
+Changes in version 1.7.11:
|
|
+
|
|
+ Changed ld.so and ld-linux.so to delete all variations
|
|
+ of LD_PRELOAD and LD_LIBRARY_PATH for set[ug]id programs,
|
|
+ This makes it harder for broken set[ug]id programs to be
|
|
+ compromised.
|
|
+
|
|
+ Fixed a problem in libdl.so where dlsym would not accept
|
|
+ the handle returned from dlopen(0, *).
|
|
+
|
|
+Changes in version 1.7.10:
|
|
+
|
|
+ Changed ld-linux.so and libdl.so to support RTLD_GLOBAL
|
|
+ (Eric Youngdale).
|
|
+
|
|
+Changes in version 1.7.9:
|
|
+
|
|
+ Fixed a problem in ld-linux.so in detecting when the
|
|
+ new user/group information is provided by the kernel.
|
|
+
|
|
+ Fixed a problem in ld-linux.so where a buffer could be
|
|
+ overflowed if a large number of libraries were loaded
|
|
+ (Thomas Moore).
|
|
+
|
|
+Changes in version 1.7.8:
|
|
+
|
|
+ Changed the Makefiles and install scripts to support
|
|
+ a.out- and ELF-only configurations.
|
|
+
|
|
+ Changed ld-linux.so to use the user/group information
|
|
+ provided by linux 1.3.23+ instead of making syscalls
|
|
+ to get it.
|
|
+
|
|
+ Changed libdl.so to support RTLD_NEXT (Glenn Fowler).
|
|
+
|
|
+ Changed libdl.so to only execute the fini sections
|
|
+ instead of completely closing libraries at exit (Glenn
|
|
+ Fowler).
|
|
+
|
|
+ Changed ld.so and ld-linux.so to print the required
|
|
+ cache version when a mismatch is detected.
|
|
+
|
|
+ Changed ld-linux.so to not require on /dev/zero (Ralph
|
|
+ Loader).
|
|
+
|
|
+ Minor m68k cleanups (Andreas Schwab).
|
|
+
|
|
+Changes in version 1.7.7:
|
|
+
|
|
+ Fixed problems compiling with recent 1.3.x kernels.
|
|
+
|
|
+ Changed ld-linux.so to not use MAP_DENYWRITE until the
|
|
+ permission issue regarding it is resolved.
|
|
+
|
|
+Changes in version 1.7.6:
|
|
+
|
|
+ Fixed a bug in ld-linux.so dealing with a zero-length
|
|
+ LD_{ELF_}PRELOAD.
|
|
+
|
|
+ Changed ld.so and ld-linux.so to truncate all variations
|
|
+ of LD_PRELOAD and LD_LIBRARY_PATH for set[ug]id programs.
|
|
+
|
|
+Changes in version 1.7.5:
|
|
+
|
|
+ Changed ldconfig to recognize libraries without any
|
|
+ version number (eg. libXYZ.so).
|
|
+
|
|
+ Changed ldconfig to not generate a corrupt cache when
|
|
+ the disk is full or other write errors occur.
|
|
+
|
|
+ Changed ld-linux.so to map files with MAP_DENYWRITE to
|
|
+ keep them from being changed while the file is in use
|
|
+ (Rick Sladkey).
|
|
+
|
|
+ Changed libdl to not overwrite the scope pointer of a
|
|
+ library if it was already loaded (H.J. Lu).
|
|
+
|
|
+ Changed ld-linux.so so gdb can be used on constructors
|
|
+ (Eric Youngdale).
|
|
+
|
|
+ Changed ldconfig to ignore ELF libraries where the soname
|
|
+ does not match the file name on the assumption that it is
|
|
+ a used at compile-time (eg. libcurses.so -> libncruses.so).
|
|
+
|
|
+Changes in version 1.7.4:
|
|
+
|
|
+ Changed ld-linux.so and libdl to use the appropriate
|
|
+ rpaths when searching for shared libraries (Eric
|
|
+ Youngdale).
|
|
+
|
|
+ Changed ld-linux.so to search rpath before using the
|
|
+ cache. This more closely conforms to the IBCS standard.
|
|
+
|
|
+Changes in version 1.7.3:
|
|
+
|
|
+ Changed ld-linux.so to only print a library name the
|
|
+ first time it is loaded when run from ldd.
|
|
+
|
|
+ Fixed a bug in ldconfig where an invalid cache could be
|
|
+ generated if a directory was specified multiple times in
|
|
+ ld.so.conf.
|
|
+
|
|
+ Changed ld-linux.so so it will return the address of a
|
|
+ weak symbol when called from dlsym in libdl (Eric
|
|
+ Youngdale.
|
|
+
|
|
+Changes in version 1.7.2:
|
|
+
|
|
+ Changed libdl.so again to fix the undefined foobar
|
|
+ problem.
|
|
+
|
|
+Changes in version 1.7.1:
|
|
+
|
|
+ Changed libdl so it will compile at optimization level
|
|
+ O3 or higher.
|
|
+
|
|
+ Changed ldconfig to always create the cache file with
|
|
+ mode 644.
|
|
+
|
|
+ Changed ldconfig to not ingore valid symlinks.
|
|
+
|
|
+ Changed ldconfig to use the library name as the soname
|
|
+ for ELF libraries that do not have an soname entry.
|
|
+
|
|
+ Changed ld-linux.so to print the actual, requested library
|
|
+ name at the time it is loaded instead of trying to figure
|
|
+ it out after the fact.
|
|
+
|
|
+Changes in version 1.7.0:
|
|
+
|
|
+ Changed ldconfig to read the actual soname from the image
|
|
+ for ELF libraries and make it available to ld-linux.so.
|
|
+ The soname for DLL libraries is still determined by
|
|
+ truncating the minor numbers from the image file name.
|
|
+
|
|
+ Changed ldconfig to no longer support the undocumented
|
|
+ sort options.
|
|
+
|
|
+ Changed ld.so to require a valid cache to find libraries
|
|
+ in directories specified in ld.so.conf. /usr/lib and /lib
|
|
+ are still searched as a last resort. Ld-linux.so already
|
|
+ operated this way.
|
|
+
|
|
+ Fixed a bug in libldso.a where the arguments to
|
|
+ shared_loader were not parsed correctly (Wolfram Gloger).
|
|
+
|
|
+ Added support for RELA-style relocations under Linux/68k
|
|
+ (Andreas Schwab).
|
|
+
|
|
+ Changed ld-linux.so to only map the cache once for all
|
|
+ libraries instead of individually for each library.
|
|
+
|
|
+ Changed ld-linux.so continue searching the cache instead of
|
|
+ giving up when failing to load the first entry found.
|
|
+
|
|
+ Changed ld-linux.so to produce output similar to ld.so when
|
|
+ run from ldd or when errors occur.
|
|
+
|
|
+Changes in version 1.6.7:
|
|
+
|
|
+ Changed the install scripts to make sure that ld.so and
|
|
+ ld-linux.so are always usable.
|
|
+
|
|
+ Added support for Linux/Sparc (Eric Youngdale).
|
|
+
|
|
+ Added support for Linux/68k (Andreas Schwab).
|
|
+
|
|
+ Fixed various bugs in ld-linux.so dealing with closing
|
|
+ files, unmapping memory, dereferencing NULL pointers and
|
|
+ printing library names (David Engel, Eric Youngdale and
|
|
+ Andreas Schwab).
|
|
+
|
|
+ Replaced the manual page for libdl with a freely
|
|
+ distributable one (Adam Richter).
|
|
+
|
|
+ Fixed a bug in ld-linux.so where LD_LIBRARY_PATH and
|
|
+ LD_PRELOAD were not cleared for setuid/setgid programs.
|
|
+
|
|
+ Fixed a bug in libdl where dlsym would not return the
|
|
+ correct address of a symbol if it was redefined in another
|
|
+ library (Oleg Kibirev).
|
|
+
|
|
+ Changed ld-linux.so to use the following order to search
|
|
+ for libraries: LD_{ELF_}LIBRARY_PATH, ld.so.cache, rpath,
|
|
+ /usr/lib and /lib.
|
|
+
|
|
+ Changed ld-linux.so to not needlessly allocate memory when
|
|
+ using ld.so.cache.
|
|
+
|
|
+Changes in version 1.6.6:
|
|
+
|
|
+ Changed ldconfig to not warn about removing stale links
|
|
+ unless the -v option is specified.
|
|
+
|
|
+ Added manual pages for libdl (from FreeBSD/Sun)
|
|
+
|
|
+ Fixed a bug in ld.so dealing with preloading of objects
|
|
+ generated by recent versions of ld (Mitch D'Souza).
|
|
+
|
|
+ Fixed bugs in ldd where some errors were either not
|
|
+ detected or not printed.
|
|
+
|
|
+ Fixed a bug in ld-linux.so where the trailing nul in a
|
|
+ library name was not being copied (Owen Taylor).
|
|
+
|
|
+Changes in version 1.6.5:
|
|
+
|
|
+ Changed ldconfig to remove stale symbolic links.
|
|
+
|
|
+ Added debug hooks in ld-linux.so and libdl.so to be used
|
|
+ by a future version of gdb (Eric Youngdale).
|
|
+
|
|
+Changes in version 1.6.4:
|
|
+
|
|
+ Change ld-linux.so to print on stdout instead of stderr
|
|
+ when run from ldd.
|
|
+
|
|
+ Added support for Debian GNU/Linux packaging.
|
|
+
|
|
+Changes in version 1.6.3:
|
|
+
|
|
+ Fixed a bug in libdl when closing a library (H.J. Lu).
|
|
+
|
|
+Changes in version 1.6.2:
|
|
+
|
|
+ Changed the error message printed by ldd when a file is
|
|
+ not a.out or ELF. It used to only list a.out formats.
|
|
+
|
|
+ Changed ldconfig to no longer cache and set up links for
|
|
+ ld-linux.so.
|
|
+
|
|
+ Changed ld-linux.so and libdl to not conflict with upcoming
|
|
+ changes in kernel header files.
|
|
+
|
|
+ Changed ld-linux.so to not print preloaded libraries.
|
|
+
|
|
+Changes in version 1.6.1:
|
|
+
|
|
+ Updated the installation script.
|
|
+
|
|
+ Changed ld.so and ld-linux.so to look for LD_AOUT_PRELOAD
|
|
+ and LD_ELF_PRELOAD, respectively, before LD_PRELOAD.
|
|
+
|
|
+ Changed ld.so and ld-linux.so to use LD_AOUT_LIBRARY_PATH
|
|
+ and LD_ELF_LIBRARY_PATH, respectively, instead of
|
|
+ AOUT_LD_LIBRARY_PATH and ELF_LD_LIBRARY_PATH.
|
|
+
|
|
+Changes in version 1.6.0:
|
|
+
|
|
+ Changed ldconfig to process libraries which do not have
|
|
+ a minor version or patch level number.
|
|
+
|
|
+ Incorporated ld-linux.so and libdl.so.
|
|
+
|
|
+ Changed ld.so and ld-linux.so to not miss entries in the
|
|
+ cache when the fully qualified library is requested.
|
|
+
|
|
+ Changed ldconfig to use stdout instead of stderr when
|
|
+ printing the cache.
|
|
+
|
|
+Changes in version 1.5.3:
|
|
+
|
|
+ LD_PRELOAD enhancements (Tristan Gigold).
|
|
+
|
|
+ LD_PRELOAD patch for linux-68k (Andreas Schwab).
|
|
+
|
|
+Changes in version 1.5.2:
|
|
+
|
|
+ More ELF changes (Mitch D'Souza).
|
|
+
|
|
+ Changed ldconfig to also update the link for ld-linux.so.
|
|
+
|
|
+Changes in version 1.5.1:
|
|
+
|
|
+ More ELF and LD_PRELOAD changes (Mitch D'Souza).
|
|
+
|
|
+Changes in version 1.5.0:
|
|
+
|
|
+ Chnaged all executables to QMAGIC (Mitch D'Souza and Rick
|
|
+ Sladkey).
|
|
+
|
|
+ Added preliminary support for ELF to ldd and ldconfig (Eric
|
|
+ Youndale and H.J. Lu).
|
|
+
|
|
+ Added support for LD_PRELOAD to ld.so (Mitch D'Souza).
|
|
+
|
|
+ Removed the "advertising" clause from the copyright notices
|
|
+ in all source files.
|
|
+
|
|
+Changes in version 1.4.4:
|
|
+
|
|
+ Changed ldconfig to support QMAGIC libraries.
|
|
+
|
|
+ Fixed a bug in ld.so where some of the error messages had
|
|
+ transposed arguments.
|
|
+
|
|
+Changes in version 1.4.3:
|
|
+
|
|
+ Fixed an obscure bug in ld.so where an index was not being
|
|
+ incremented when a library was not found using the cache.
|
|
+
|
|
+Changes in version 1.4.2:
|
|
+
|
|
+ Changed ldconfig to issue a warning and continue instead
|
|
+ of an error and exiting when a link can't be updated.
|
|
+ This is useful when some libraries are imported on read-
|
|
+ only file systems, such as an NFS mounted /usr.
|
|
+
|
|
+ Changed ld.so to be more robust in searching for libraries.
|
|
+ A library is not considered found unless it can actually be
|
|
+ loaded. If a library is not found using the cache, the
|
|
+ standard directories are searched as in pre-cache versions.
|
|
+
|
|
+Changes in version 1.4.1:
|
|
+
|
|
+ Fixed minor Makefile problems.
|
|
+
|
|
+ Added support for linux-68k.
|
|
+
|
|
+ Fixed a bug in ld.so where libraries with absolute paths
|
|
+ were not handled correctly.
|
|
+
|
|
+ Changed ld.so to ignore the directory in the names of
|
|
+ shared libraries by default. This allows older libraries
|
|
+ with absolute paths, such as the XView libraries, to take
|
|
+ advantage of the cache support.
|
|
+
|
|
+ Added a minimal usage message to ldconfig.
|
|
+
|
|
+Changes in version 1.4:
|
|
+
|
|
+ Fixed bug in ld.so where minor version numbers were not
|
|
+ reported correctly when a minor version incompatibility
|
|
+ was found.
|
|
+
|
|
+ Fixed bug in ldconfig where libraries with subversion
|
|
+ numbers greater than 9 were not compared correctly.
|
|
+
|
|
+ Added Mitch D'Souza's support for suppressing warning
|
|
+ messages from ld.so about minor version incompatibilities.
|
|
+
|
|
+ Added Mitch D'Souza's support for using a cache to speed
|
|
+ up searching for libraries in the standard directories.
|
|
+
|
|
+ Added Mitch D'Souza's support for a debugging version of
|
|
+ ld.so. Link with -lldso if you think you are experiencing
|
|
+ dynamic linker problems.
|
|
+
|
|
+Changes in version 1.3:
|
|
+
|
|
+ Added support for libraries using absolute pathnames. If I
|
|
+ had known that the XView libraries used them, I would have
|
|
+ added this earlier.
|
|
+
|
|
+ Fixed a bug handling old libraries using a pathname beginning
|
|
+ with '/' or '/lib/'.
|
|
+
|
|
+Changes in version 1.2a:
|
|
+
|
|
+ Fixed a minor bug in ldd which caused all files, specifically
|
|
+ scripts, to be recognized as binaries. Thanks to Olaf Flebbe
|
|
+ for reporting it.
|
|
+
|
|
+David Engel
|
|
+david@sw.ods.com
|
|
diff -urN uClibc/ldso-0.9.24/include/.cvsignore uClibc.ldso.24/ldso-0.9.24/include/.cvsignore
|
|
--- uClibc/ldso-0.9.24/include/.cvsignore 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/include/.cvsignore 2003-08-19 01:05:30.000000000 -0500
|
|
@@ -0,0 +1,4 @@
|
|
+elf.h
|
|
+ld_syscalls.h
|
|
+ld_sysdep.h
|
|
+boot1_arch.h
|
|
diff -urN uClibc/ldso-0.9.24/include/dlfcn.h uClibc.ldso.24/ldso-0.9.24/include/dlfcn.h
|
|
--- uClibc/ldso-0.9.24/include/dlfcn.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/include/dlfcn.h 2003-08-19 01:05:30.000000000 -0500
|
|
@@ -0,0 +1,22 @@
|
|
+/* User functions for run-time dynamic loading. libdl version */
|
|
+#ifndef _DLFCN_H
|
|
+#define _DLFCN_H 1
|
|
+
|
|
+#include <features.h>
|
|
+#include <bits/dlfcn.h>
|
|
+
|
|
+#define RTLD_NEXT ((void *) -1l)
|
|
+#define RTLD_DEFAULT ((void *) 0)
|
|
+
|
|
+/* Structure containing information about object searched using
|
|
+ `dladdr'. */
|
|
+typedef struct
|
|
+{
|
|
+ __const char *dli_fname; /* File name of defining object. */
|
|
+ void *dli_fbase; /* Load address of that object. */
|
|
+ __const char *dli_sname; /* Name of nearest symbol. */
|
|
+ void *dli_saddr; /* Exact value of nearest symbol. */
|
|
+} Dl_info;
|
|
+
|
|
+
|
|
+#endif /* dlfcn.h */
|
|
diff -urN uClibc/ldso-0.9.24/include/ld_elf.h uClibc.ldso.24/ldso-0.9.24/include/ld_elf.h
|
|
--- uClibc/ldso-0.9.24/include/ld_elf.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/include/ld_elf.h 2003-11-04 07:07:45.000000000 -0600
|
|
@@ -0,0 +1,93 @@
|
|
+#ifndef LINUXELF_H
|
|
+#define LINUXELF_H
|
|
+
|
|
+#include <ld_sysdep.h> /* before elf.h to get ELF_USES_RELOCA right */
|
|
+#include <elf.h>
|
|
+#include <link.h>
|
|
+
|
|
+#ifdef DEBUG
|
|
+# define LDSO_CONF "../util/ld.so.conf"
|
|
+# define LDSO_CACHE "../util/ld.so.cache"
|
|
+# define LDSO_PRELOAD "../util/ld.so.preload"
|
|
+#else
|
|
+# define LDSO_CONF UCLIBC_RUNTIME_PREFIX "etc/ld.so.conf"
|
|
+# define LDSO_CACHE UCLIBC_RUNTIME_PREFIX "etc/ld.so.cache"
|
|
+# define LDSO_PRELOAD UCLIBC_RUNTIME_PREFIX "etc/ld.so.preload"
|
|
+#endif
|
|
+
|
|
+
|
|
+#define LIB_ANY -1
|
|
+#define LIB_DLL 0
|
|
+#define LIB_ELF 1
|
|
+#define LIB_ELF64 0x80
|
|
+#define LIB_ELF_LIBC5 2
|
|
+#define LIB_ELF_LIBC6 3
|
|
+#define LIB_ELF_LIBC0 4
|
|
+
|
|
+/* Forward declarations for stuff defined in ld_hash.h */
|
|
+struct dyn_elf;
|
|
+struct elf_resolve;
|
|
+
|
|
+
|
|
+/* Definitions and prototypes for cache stuff */
|
|
+#ifdef USE_CACHE
|
|
+extern int _dl_map_cache(void);
|
|
+extern int _dl_unmap_cache(void);
|
|
+
|
|
+#define LDSO_CACHE_MAGIC "ld.so-"
|
|
+#define LDSO_CACHE_MAGIC_LEN (sizeof LDSO_CACHE_MAGIC -1)
|
|
+#define LDSO_CACHE_VER "1.7.0"
|
|
+#define LDSO_CACHE_VER_LEN (sizeof LDSO_CACHE_VER -1)
|
|
+
|
|
+typedef struct {
|
|
+ char magic [LDSO_CACHE_MAGIC_LEN];
|
|
+ char version [LDSO_CACHE_VER_LEN];
|
|
+ int nlibs;
|
|
+} header_t;
|
|
+
|
|
+typedef struct {
|
|
+ int flags;
|
|
+ int sooffset;
|
|
+ int liboffset;
|
|
+} libentry_t;
|
|
+
|
|
+#else
|
|
+static inline void _dl_map_cache(void) { }
|
|
+static inline void _dl_unmap_cache(void) { }
|
|
+#endif
|
|
+
|
|
+
|
|
+/* Function prototypes for non-static stuff in readelflib1.c */
|
|
+int _dl_copy_fixups(struct dyn_elf * tpnt);
|
|
+extern int _dl_parse_copy_information(struct dyn_elf *rpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type);
|
|
+extern void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type);
|
|
+extern int _dl_parse_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type);
|
|
+extern struct elf_resolve * _dl_load_shared_library(int secure,
|
|
+ struct dyn_elf **rpnt, struct elf_resolve *tpnt, char *full_libname);
|
|
+extern struct elf_resolve * _dl_load_elf_shared_library(int secure,
|
|
+ struct dyn_elf **rpnt, char *libname);
|
|
+extern struct elf_resolve *_dl_check_if_named_library_is_loaded(const char *full_libname);
|
|
+extern int _dl_linux_resolve(void);
|
|
+
|
|
+
|
|
+/*
|
|
+ * Datatype of a relocation on this platform
|
|
+ */
|
|
+#ifdef ELF_USES_RELOCA
|
|
+# define ELF_RELOC ElfW(Rela)
|
|
+#else
|
|
+# define ELF_RELOC ElfW(Rel)
|
|
+#endif
|
|
+
|
|
+
|
|
+/* Convert between the Linux flags for page protections and the
|
|
+ ones specified in the ELF standard. */
|
|
+#define LXFLAGS(X) ( (((X) & PF_R) ? PROT_READ : 0) | \
|
|
+ (((X) & PF_W) ? PROT_WRITE : 0) | \
|
|
+ (((X) & PF_X) ? PROT_EXEC : 0))
|
|
+
|
|
+
|
|
+#endif /* LINUXELF_H */
|
|
diff -urN uClibc/ldso-0.9.24/include/ld_hash.h uClibc.ldso.24/ldso-0.9.24/include/ld_hash.h
|
|
--- uClibc/ldso-0.9.24/include/ld_hash.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/include/ld_hash.h 2003-08-19 08:11:05.000000000 -0500
|
|
@@ -0,0 +1,103 @@
|
|
+#ifndef _LD_HASH_H_
|
|
+#define _LD_HASH_H_
|
|
+
|
|
+#ifndef RTLD_NEXT
|
|
+#define RTLD_NEXT ((void*)-1)
|
|
+#endif
|
|
+
|
|
+struct dyn_elf{
|
|
+ unsigned long flags;
|
|
+ struct elf_resolve * dyn;
|
|
+ struct dyn_elf * next_handle; /* Used by dlopen et al. */
|
|
+ struct dyn_elf * next;
|
|
+ struct dyn_elf * prev;
|
|
+};
|
|
+
|
|
+struct elf_resolve{
|
|
+ /* These entries must be in this order to be compatible with the interface used
|
|
+ by gdb to obtain the list of symbols. */
|
|
+ ElfW(Addr) loadaddr; /* Base address shared object is loaded at. */
|
|
+ char *libname; /* Absolute file name object was found in. */
|
|
+ ElfW(Dyn) *dynamic_addr; /* Dynamic section of the shared object. */
|
|
+ struct elf_resolve * next;
|
|
+ struct elf_resolve * prev;
|
|
+ /* Nothing after this address is used by gdb. */
|
|
+ enum {elf_lib, elf_executable,program_interpreter, loaded_file} libtype;
|
|
+ struct dyn_elf * symbol_scope;
|
|
+ unsigned short usage_count;
|
|
+ unsigned short int init_flag;
|
|
+ unsigned int nbucket;
|
|
+ unsigned long * elf_buckets;
|
|
+ /*
|
|
+ * These are only used with ELF style shared libraries
|
|
+ */
|
|
+ unsigned long nchain;
|
|
+ unsigned long * chains;
|
|
+ unsigned long dynamic_info[24];
|
|
+
|
|
+ unsigned long dynamic_size;
|
|
+ unsigned long n_phent;
|
|
+ Elf32_Phdr * ppnt;
|
|
+
|
|
+#if defined(__mips__)
|
|
+ /* Needed for MIPS relocation */
|
|
+ unsigned long mips_gotsym;
|
|
+ unsigned long mips_local_gotno;
|
|
+ unsigned long mips_symtabno;
|
|
+#endif
|
|
+
|
|
+#ifdef __powerpc__
|
|
+ /* this is used to store the address of relocation data words, so
|
|
+ * we don't have to calculate it every time, which requires a divide */
|
|
+ unsigned long data_words;
|
|
+#endif
|
|
+};
|
|
+
|
|
+#define COPY_RELOCS_DONE 1
|
|
+#define RELOCS_DONE 2
|
|
+#define JMP_RELOCS_DONE 4
|
|
+#define INIT_FUNCS_CALLED 8
|
|
+
|
|
+extern struct dyn_elf * _dl_symbol_tables;
|
|
+extern struct elf_resolve * _dl_loaded_modules;
|
|
+extern struct dyn_elf * _dl_handles;
|
|
+
|
|
+extern struct elf_resolve * _dl_check_hashed_files(const char * libname);
|
|
+extern struct elf_resolve * _dl_add_elf_hash_table(const char * libname,
|
|
+ char * loadaddr, unsigned long * dynamic_info,
|
|
+ unsigned long dynamic_addr, unsigned long dynamic_size);
|
|
+
|
|
+enum caller_type{symbolrel=0,copyrel=1,resolver=2};
|
|
+extern char * _dl_find_hash(const char * name, struct dyn_elf * rpnt1,
|
|
+ struct elf_resolve * f_tpnt, enum caller_type);
|
|
+
|
|
+extern int _dl_linux_dynamic_link(void);
|
|
+
|
|
+extern char * _dl_library_path;
|
|
+extern char * _dl_not_lazy;
|
|
+extern unsigned long _dl_elf_hash(const char * name);
|
|
+
|
|
+static inline int _dl_symbol(char * name)
|
|
+{
|
|
+ if(name[0] != '_' || name[1] != 'd' || name[2] != 'l' || name[3] != '_')
|
|
+ return 0;
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+
|
|
+#define LD_ERROR_NOFILE 1
|
|
+#define LD_ERROR_NOZERO 2
|
|
+#define LD_ERROR_NOTELF 3
|
|
+#define LD_ERROR_NOTMAGIC 4
|
|
+#define LD_ERROR_NOTDYN 5
|
|
+#define LD_ERROR_MMAP_FAILED 6
|
|
+#define LD_ERROR_NODYNAMIC 7
|
|
+#define LD_WRONG_RELOCS 8
|
|
+#define LD_BAD_HANDLE 9
|
|
+#define LD_NO_SYMBOL 10
|
|
+
|
|
+
|
|
+
|
|
+#endif /* _LD_HASH_H_ */
|
|
+
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/include/ld_string.h uClibc.ldso.24/ldso-0.9.24/include/ld_string.h
|
|
--- uClibc/ldso-0.9.24/include/ld_string.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/include/ld_string.h 2003-09-29 16:46:00.000000000 -0500
|
|
@@ -0,0 +1,281 @@
|
|
+#ifndef _LINUX_STRING_H_
|
|
+#define _LINUX_STRING_H_
|
|
+
|
|
+extern void *_dl_malloc(int size);
|
|
+extern char *_dl_getenv(const char *symbol, char **envp);
|
|
+extern void _dl_unsetenv(const char *symbol, char **envp);
|
|
+extern char *_dl_strdup(const char *string);
|
|
+extern void _dl_dprintf(int, const char *, ...);
|
|
+
|
|
+
|
|
+static size_t _dl_strlen(const char * str);
|
|
+static char *_dl_strcat(char *dst, const char *src);
|
|
+static char * _dl_strcpy(char * dst,const char *src);
|
|
+static int _dl_strcmp(const char * s1,const char * s2);
|
|
+static int _dl_strncmp(const char * s1,const char * s2,size_t len);
|
|
+static char * _dl_strchr(const char * str,int c);
|
|
+static char *_dl_strrchr(const char *str, int c);
|
|
+static char *_dl_strstr(const char *s1, const char *s2);
|
|
+static void * _dl_memcpy(void * dst, const void * src, size_t len);
|
|
+static int _dl_memcmp(const void * s1,const void * s2,size_t len);
|
|
+static void *_dl_memset(void * str,int c,size_t len);
|
|
+static char *_dl_get_last_path_component(char *path);
|
|
+static char *_dl_simple_ltoa(char * local, unsigned long i);
|
|
+static char *_dl_simple_ltoahex(char * local, unsigned long i);
|
|
+
|
|
+#ifndef NULL
|
|
+#define NULL ((void *) 0)
|
|
+#endif
|
|
+
|
|
+static inline size_t _dl_strlen(const char * str)
|
|
+{
|
|
+ register char *ptr = (char *) str;
|
|
+
|
|
+ while (*ptr)
|
|
+ ptr++;
|
|
+ return (ptr - str);
|
|
+}
|
|
+
|
|
+static inline char *_dl_strcat(char *dst, const char *src)
|
|
+{
|
|
+ register char *ptr = dst;
|
|
+
|
|
+ while (*ptr)
|
|
+ ptr++;
|
|
+
|
|
+ while (*src)
|
|
+ *ptr++ = *src++;
|
|
+ *ptr = '\0';
|
|
+
|
|
+ return dst;
|
|
+}
|
|
+
|
|
+static inline char * _dl_strcpy(char * dst,const char *src)
|
|
+{
|
|
+ register char *ptr = dst;
|
|
+
|
|
+ while (*src)
|
|
+ *dst++ = *src++;
|
|
+ *dst = '\0';
|
|
+
|
|
+ return ptr;
|
|
+}
|
|
+
|
|
+static inline int _dl_strcmp(const char * s1,const char * s2)
|
|
+{
|
|
+ register unsigned char c1, c2;
|
|
+
|
|
+ do {
|
|
+ c1 = (unsigned char) *s1++;
|
|
+ c2 = (unsigned char) *s2++;
|
|
+ if (c1 == '\0')
|
|
+ return c1 - c2;
|
|
+ }
|
|
+ while (c1 == c2);
|
|
+
|
|
+ return c1 - c2;
|
|
+}
|
|
+
|
|
+static inline int _dl_strncmp(const char * s1,const char * s2,size_t len)
|
|
+{
|
|
+ register unsigned char c1 = '\0';
|
|
+ register unsigned char c2 = '\0';
|
|
+
|
|
+ while (len > 0) {
|
|
+ c1 = (unsigned char) *s1++;
|
|
+ c2 = (unsigned char) *s2++;
|
|
+ if (c1 == '\0' || c1 != c2)
|
|
+ return c1 - c2;
|
|
+ len--;
|
|
+ }
|
|
+
|
|
+ return c1 - c2;
|
|
+}
|
|
+
|
|
+static inline char * _dl_strchr(const char * str,int c)
|
|
+{
|
|
+ register char ch;
|
|
+
|
|
+ do {
|
|
+ if ((ch = *str) == c)
|
|
+ return (char *) str;
|
|
+ str++;
|
|
+ }
|
|
+ while (ch);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static inline char *_dl_strrchr(const char *str, int c)
|
|
+{
|
|
+ register char *prev = 0;
|
|
+ register char *ptr = (char *) str;
|
|
+
|
|
+ while (*ptr != '\0') {
|
|
+ if (*ptr == c)
|
|
+ prev = ptr;
|
|
+ ptr++;
|
|
+ }
|
|
+ if (c == '\0')
|
|
+ return(ptr);
|
|
+ return(prev);
|
|
+}
|
|
+
|
|
+
|
|
+static inline char *_dl_strstr(const char *s1, const char *s2)
|
|
+{
|
|
+ register const char *s = s1;
|
|
+ register const char *p = s2;
|
|
+
|
|
+ do {
|
|
+ if (!*p) {
|
|
+ return (char *) s1;;
|
|
+ }
|
|
+ if (*p == *s) {
|
|
+ ++p;
|
|
+ ++s;
|
|
+ } else {
|
|
+ p = s2;
|
|
+ if (!*s) {
|
|
+ return NULL;
|
|
+ }
|
|
+ s = ++s1;
|
|
+ }
|
|
+ } while (1);
|
|
+}
|
|
+
|
|
+static inline void * _dl_memcpy(void * dst, const void * src, size_t len)
|
|
+{
|
|
+ register char *a = dst;
|
|
+ register const char *b = src;
|
|
+
|
|
+ while (len--)
|
|
+ *a++ = *b++;
|
|
+
|
|
+ return dst;
|
|
+}
|
|
+
|
|
+
|
|
+static inline int _dl_memcmp(const void * s1,const void * s2,size_t len)
|
|
+{
|
|
+ unsigned char *c1 = (unsigned char *)s1;
|
|
+ unsigned char *c2 = (unsigned char *)s2;
|
|
+
|
|
+ while (len--) {
|
|
+ if (*c1 != *c2)
|
|
+ return *c1 - *c2;
|
|
+ c1++;
|
|
+ c2++;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static inline void * _dl_memset(void * str,int c,size_t len)
|
|
+{
|
|
+ register char *a = str;
|
|
+
|
|
+ while (len--)
|
|
+ *a++ = c;
|
|
+
|
|
+ return str;
|
|
+}
|
|
+
|
|
+static inline char *_dl_get_last_path_component(char *path)
|
|
+{
|
|
+ char *s;
|
|
+ register char *ptr = path;
|
|
+ register char *prev = 0;
|
|
+
|
|
+ while (*ptr)
|
|
+ ptr++;
|
|
+ s = ptr - 1;
|
|
+
|
|
+ /* strip trailing slashes */
|
|
+ while (s != path && *s == '/') {
|
|
+ *s-- = '\0';
|
|
+ }
|
|
+
|
|
+ /* find last component */
|
|
+ ptr = path;
|
|
+ while (*ptr != '\0') {
|
|
+ if (*ptr == '/')
|
|
+ prev = ptr;
|
|
+ ptr++;
|
|
+ }
|
|
+ s = prev;
|
|
+
|
|
+ if (s == NULL || s[1] == '\0')
|
|
+ return path;
|
|
+ else
|
|
+ return s+1;
|
|
+}
|
|
+
|
|
+/* Early on, we can't call printf, so use this to print out
|
|
+ * numbers using the SEND_STDERR() macro */
|
|
+static inline char *_dl_simple_ltoa(char * local, unsigned long i)
|
|
+{
|
|
+ /* 21 digits plus null terminator, good for 64-bit or smaller ints */
|
|
+ char *p = &local[22];
|
|
+ *p-- = '\0';
|
|
+ do {
|
|
+ *p-- = '0' + i % 10;
|
|
+ i /= 10;
|
|
+ } while (i > 0);
|
|
+ return p + 1;
|
|
+}
|
|
+
|
|
+static inline char *_dl_simple_ltoahex(char * local, unsigned long i)
|
|
+{
|
|
+ /* 21 digits plus null terminator, good for 64-bit or smaller ints */
|
|
+ char *p = &local[22];
|
|
+ *p-- = '\0';
|
|
+ do {
|
|
+ char temp = i % 0x10;
|
|
+ if (temp <= 0x09)
|
|
+ *p-- = '0' + temp;
|
|
+ else
|
|
+ *p-- = 'a' - 0x0a + temp;
|
|
+ i /= 0x10;
|
|
+ } while (i > 0);
|
|
+ *p-- = 'x';
|
|
+ *p-- = '0';
|
|
+ return p + 1;
|
|
+}
|
|
+
|
|
+
|
|
+#if defined(mc68000) || defined(__arm__) || defined(__mips__) || defined(__sh__) || defined(__powerpc__)
|
|
+/* On some arches constant strings are referenced through the GOT. */
|
|
+/* XXX Requires load_addr to be defined. */
|
|
+#define SEND_STDERR(X) \
|
|
+ { const char *__s = (X); \
|
|
+ if (__s < (const char *) load_addr) __s += load_addr; \
|
|
+ _dl_write (2, __s, _dl_strlen (__s)); \
|
|
+ }
|
|
+#else
|
|
+#define SEND_STDERR(X) _dl_write(2, X, _dl_strlen(X));
|
|
+#endif
|
|
+
|
|
+#define SEND_ADDRESS_STDERR(X, add_a_newline) { \
|
|
+ char tmp[22], *tmp1; \
|
|
+ _dl_memset(tmp, 0, sizeof(tmp)); \
|
|
+ tmp1=_dl_simple_ltoahex( tmp, (unsigned long)(X)); \
|
|
+ _dl_write(2, tmp1, _dl_strlen(tmp1)); \
|
|
+ if (add_a_newline) { \
|
|
+ tmp[0]='\n'; \
|
|
+ _dl_write(2, tmp, 1); \
|
|
+ } \
|
|
+};
|
|
+
|
|
+#define SEND_NUMBER_STDERR(X, add_a_newline) { \
|
|
+ char tmp[22], *tmp1; \
|
|
+ _dl_memset(tmp, 0, sizeof(tmp)); \
|
|
+ tmp1=_dl_simple_ltoa( tmp, (unsigned long)(X)); \
|
|
+ _dl_write(2, tmp1, _dl_strlen(tmp1)); \
|
|
+ if (add_a_newline) { \
|
|
+ tmp[0]='\n'; \
|
|
+ _dl_write(2, tmp, 1); \
|
|
+ } \
|
|
+};
|
|
+
|
|
+
|
|
+#endif
|
|
diff -urN uClibc/ldso-0.9.24/include/ld_syscall.h uClibc.ldso.24/ldso-0.9.24/include/ld_syscall.h
|
|
--- uClibc/ldso-0.9.24/include/ld_syscall.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/include/ld_syscall.h 2003-08-19 01:05:30.000000000 -0500
|
|
@@ -0,0 +1,157 @@
|
|
+#ifndef _LD_SYSCALL_H_
|
|
+#define _LD_SYSCALL_H_
|
|
+
|
|
+/* Pull in the arch specific syscall implementation */
|
|
+#include <ld_syscalls.h>
|
|
+/* For MAP_ANONYMOUS -- differs between platforms */
|
|
+#include <asm/mman.h>
|
|
+/* Pull in whatever this particular arch's kernel thinks the kernel version of
|
|
+ * struct stat should look like. It turns out that each arch has a different
|
|
+ * opinion on the subject, and different kernel revs use different names... */
|
|
+#define kernel_stat stat
|
|
+#include <bits/kernel_stat.h>
|
|
+
|
|
+
|
|
+/* Encoding of the file mode. */
|
|
+#define S_IFMT 0170000 /* These bits determine file type. */
|
|
+
|
|
+/* File types. */
|
|
+#define S_IFDIR 0040000 /* Directory. */
|
|
+#define S_IFCHR 0020000 /* Character device. */
|
|
+#define S_IFBLK 0060000 /* Block device. */
|
|
+#define S_IFREG 0100000 /* Regular file. */
|
|
+#define S_IFIFO 0010000 /* FIFO. */
|
|
+#define S_IFLNK 0120000 /* Symbolic link. */
|
|
+#define S_IFSOCK 0140000 /* Socket. */
|
|
+
|
|
+/* Protection bits. */
|
|
+
|
|
+#define S_ISUID 04000 /* Set user ID on execution. */
|
|
+#define S_ISGID 02000 /* Set group ID on execution. */
|
|
+#define S_ISVTX 01000 /* Save swapped text after use (sticky). */
|
|
+#define S_IREAD 0400 /* Read by owner. */
|
|
+#define S_IWRITE 0200 /* Write by owner. */
|
|
+#define S_IEXEC 0100 /* Execute by owner. */
|
|
+
|
|
+
|
|
+/* Here are the definitions for some syscalls that are used
|
|
+ by the dynamic linker. The idea is that we want to be able
|
|
+ to call these before the errno symbol is dynamicly linked, so
|
|
+ we use our own version here. Note that we cannot assume any
|
|
+ dynamic linking at all, so we cannot return any error codes.
|
|
+ We just punt if there is an error. */
|
|
+
|
|
+
|
|
+#define __NR__dl_exit __NR_exit
|
|
+static inline _syscall1(void, _dl_exit, int, status);
|
|
+
|
|
+
|
|
+#define __NR__dl_close __NR_close
|
|
+static inline _syscall1(int, _dl_close, int, fd);
|
|
+
|
|
+
|
|
+#if defined(__powerpc__) || defined(__mips__) || defined(__sh__)
|
|
+/* PowerPC, MIPS and SuperH have a different calling convention for mmap(). */
|
|
+#define __NR__dl_mmap __NR_mmap
|
|
+static inline _syscall6(void *, _dl_mmap, void *, start, size_t, length,
|
|
+ int, prot, int, flags, int, fd, off_t, offset);
|
|
+#else
|
|
+#define __NR__dl_mmap_real __NR_mmap
|
|
+static inline _syscall1(void *, _dl_mmap_real, unsigned long *, buffer);
|
|
+
|
|
+static inline void * _dl_mmap(void * addr, unsigned long size, int prot,
|
|
+ int flags, int fd, unsigned long offset)
|
|
+{
|
|
+ unsigned long buffer[6];
|
|
+
|
|
+ buffer[0] = (unsigned long) addr;
|
|
+ buffer[1] = (unsigned long) size;
|
|
+ buffer[2] = (unsigned long) prot;
|
|
+ buffer[3] = (unsigned long) flags;
|
|
+ buffer[4] = (unsigned long) fd;
|
|
+ buffer[5] = (unsigned long) offset;
|
|
+ return (void *) _dl_mmap_real(buffer);
|
|
+}
|
|
+#endif
|
|
+
|
|
+#ifndef _dl_MAX_ERRNO
|
|
+#define _dl_MAX_ERRNO 4096
|
|
+#endif
|
|
+#define _dl_mmap_check_error(__res) \
|
|
+ (((int)__res) < 0 && ((int)__res) >= -_dl_MAX_ERRNO)
|
|
+#ifndef MAP_ANONYMOUS
|
|
+#ifdef __sparc__
|
|
+#define MAP_ANONYMOUS 0x20
|
|
+#else
|
|
+#error MAP_ANONYMOUS not defined and suplementary value not known
|
|
+#endif
|
|
+#endif
|
|
+
|
|
+
|
|
+#define __NR__dl_open __NR_open
|
|
+#define O_RDONLY 0x0000
|
|
+#define O_WRONLY 01
|
|
+#define O_RDWR 02
|
|
+#define O_CREAT 0100 /* not fcntl */
|
|
+static inline _syscall2(int, _dl_open, const char *, fn, int, flags);
|
|
+
|
|
+#define __NR__dl_write __NR_write
|
|
+static inline _syscall3(unsigned long, _dl_write, int, fd,
|
|
+ const void *, buf, unsigned long, count);
|
|
+
|
|
+
|
|
+#define __NR__dl_read __NR_read
|
|
+static inline _syscall3(unsigned long, _dl_read, int, fd,
|
|
+ const void *, buf, unsigned long, count);
|
|
+
|
|
+#define __NR__dl_mprotect __NR_mprotect
|
|
+static inline _syscall3(int, _dl_mprotect, const void *, addr, unsigned long, len, int, prot);
|
|
+
|
|
+
|
|
+
|
|
+#define __NR__dl_stat __NR_stat
|
|
+static inline _syscall2(int, _dl_stat, const char *, file_name, struct stat *, buf);
|
|
+
|
|
+
|
|
+#define __NR__dl_munmap __NR_munmap
|
|
+static inline _syscall2(int, _dl_munmap, void *, start, unsigned long, length);
|
|
+
|
|
+#define __NR__dl_getuid __NR_getuid
|
|
+static inline _syscall0(uid_t, _dl_getuid);
|
|
+
|
|
+#define __NR__dl_geteuid __NR_geteuid
|
|
+static inline _syscall0(uid_t, _dl_geteuid);
|
|
+
|
|
+#define __NR__dl_getgid __NR_getgid
|
|
+static inline _syscall0(gid_t, _dl_getgid);
|
|
+
|
|
+#define __NR__dl_getegid __NR_getegid
|
|
+static inline _syscall0(gid_t, _dl_getegid);
|
|
+
|
|
+#define __NR__dl_getpid __NR_getpid
|
|
+static inline _syscall0(gid_t, _dl_getpid);
|
|
+
|
|
+/*
|
|
+ * Not an actual syscall, but we need something in assembly to say whether
|
|
+ * this is OK or not.
|
|
+ */
|
|
+static inline int _dl_suid_ok(void)
|
|
+{
|
|
+ uid_t uid, euid, gid, egid;
|
|
+
|
|
+ uid = _dl_getuid();
|
|
+ euid = _dl_geteuid();
|
|
+ gid = _dl_getgid();
|
|
+ egid = _dl_getegid();
|
|
+
|
|
+ if(uid == euid && gid == egid)
|
|
+ return 1;
|
|
+ else
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#define __NR__dl_readlink __NR_readlink
|
|
+static inline _syscall3(int, _dl_readlink, const char *, path, char *, buf, size_t, bufsiz);
|
|
+
|
|
+#endif /* _LD_SYSCALL_H_ */
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/include/ldso.h uClibc.ldso.24/ldso-0.9.24/include/ldso.h
|
|
--- uClibc/ldso-0.9.24/include/ldso.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/include/ldso.h 2003-08-19 01:05:30.000000000 -0500
|
|
@@ -0,0 +1,11 @@
|
|
+#include <features.h>
|
|
+/* Pull in compiler and arch stuff */
|
|
+#include <stdlib.h>
|
|
+#include <stdarg.h>
|
|
+/* Pull in the arch specific type information */
|
|
+#include <sys/types.h>
|
|
+/* Now the ldso specific headers */
|
|
+#include <ld_elf.h>
|
|
+#include <ld_syscall.h>
|
|
+#include <ld_hash.h>
|
|
+#include <ld_string.h>
|
|
diff -urN uClibc/ldso-0.9.24/ldso/.cvsignore uClibc.ldso.24/ldso-0.9.24/ldso/.cvsignore
|
|
--- uClibc/ldso-0.9.24/ldso/.cvsignore 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/.cvsignore 2003-08-19 01:05:31.000000000 -0500
|
|
@@ -0,0 +1,2 @@
|
|
+ld-uclibc.so*
|
|
+_dl_progname.h
|
|
diff -urN uClibc/ldso-0.9.24/ldso/Makefile uClibc.ldso.24/ldso-0.9.24/ldso/Makefile
|
|
--- uClibc/ldso-0.9.24/ldso/Makefile 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/Makefile 2004-03-01 02:58:58.000000000 -0600
|
|
@@ -0,0 +1,101 @@
|
|
+# Makefile for uClibc
|
|
+#
|
|
+# Copyright (C) 2000 by Lineo, inc.
|
|
+# Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org>
|
|
+#
|
|
+# This program is free software; you can redistribute it and/or modify it under
|
|
+# the terms of the GNU Library General Public License as published by the Free
|
|
+# Software Foundation; either version 2 of the License, or (at your option) any
|
|
+# later version.
|
|
+#
|
|
+# This program is distributed in the hope that it will be useful, but WITHOUT
|
|
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
+# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
|
|
+# details.
|
|
+#
|
|
+# You should have received a copy of the GNU Library General Public License
|
|
+# along with this program; if not, write to the Free Software Foundation, Inc.,
|
|
+# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
+#
|
|
+# Derived in part from the Linux-8086 C library, the GNU C Library, and several
|
|
+# other sundry sources. Files within this library are copyright by their
|
|
+# respective copyright holders.
|
|
+
|
|
+
|
|
+TOPDIR=../../
|
|
+include $(TOPDIR)Rules.mak
|
|
+LDSO_FULLNAME=ld-uClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
|
|
+
|
|
+
|
|
+XXFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) $(PICFLAG) \
|
|
+ -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
|
|
+ -fno-builtin -nostdinc -I$(TOPDIR)ldso-0.9.24/include -I. -I$(TOPDIR)include
|
|
+
|
|
+ifeq ($(SUPPORT_LD_DEBUG),y)
|
|
+XXFLAGS=$(XWARNINGS) $(XARCH_CFLAGS) $(CPU_CFLAGS) $(PICFLAG) \
|
|
+ -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
|
|
+ -fno-builtin -nostdinc -I$(TOPDIR)ldso-0.9.24/include -I. -I$(TOPDIR)include
|
|
+# Not really much point in including debugging info, since gdb
|
|
+# can't really debug ldso, since gdb requires help from ldso to
|
|
+# debug things....
|
|
+XXFLAGS+=-Os #-g3
|
|
+endif
|
|
+
|
|
+# BEWARE!!! At least mips* will die if -O0 is used!!!
|
|
+XXFLAGS :=$(XXFLAGS:-O0=-O1)
|
|
+
|
|
+XXFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp")
|
|
+LDFLAGS=$(CPU_LDFLAGS-y) -shared --warn-common --export-dynamic --sort-common \
|
|
+ -z combreloc --discard-locals --discard-all --no-undefined
|
|
+
|
|
+CSRC= ldso.c #hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c
|
|
+COBJS=$(patsubst %.c,%.o, $(CSRC))
|
|
+ASRC=$(shell ls $(TARGET_ARCH)/*.S)
|
|
+AOBJS=$(patsubst %.S,%.o, $(ASRC))
|
|
+OBJS=$(AOBJS) $(COBJS)
|
|
+
|
|
+ifneq ($(strip $(SUPPORT_LD_DEBUG)),y)
|
|
+LDFLAGS+=-s
|
|
+endif
|
|
+
|
|
+ifeq ($(strip $(SUPPORT_LD_DEBUG)),y)
|
|
+XXFLAGS+=-D__SUPPORT_LD_DEBUG__
|
|
+endif
|
|
+
|
|
+ifeq ($(strip $(SUPPORT_LD_DEBUG_EARLY)),y)
|
|
+XXFLAGS+=-D__SUPPORT_LD_DEBUG_EARLY__
|
|
+endif
|
|
+
|
|
+ifeq ($(strip $(FORCE_SHAREABLE_TEXT_SEGMENTS)),y)
|
|
+XXFLAGS+=-DFORCE_SHAREABLE_TEXT_SEGMENTS
|
|
+endif
|
|
+
|
|
+#This stuff will not work with -fomit-frame-pointer
|
|
+XXFLAGS := $(XXFLAGS:-fomit-frame-pointer=)
|
|
+
|
|
+all: lib
|
|
+
|
|
+lib:: _dl_progname.h $(OBJS) $(DLINK_OBJS)
|
|
+ $(LD) $(LDFLAGS) -e _dl_boot -soname=$(UCLIBC_LDSO) \
|
|
+ -o $(LDSO_FULLNAME) $(OBJS) $(LIBGCC);
|
|
+ $(INSTALL) -d $(TOPDIR)lib
|
|
+ $(INSTALL) -m 755 $(LDSO_FULLNAME) $(TOPDIR)lib
|
|
+ $(LN) -sf $(LDSO_FULLNAME) $(TOPDIR)lib/$(UCLIBC_LDSO)
|
|
+
|
|
+_dl_progname.h: Makefile
|
|
+ echo "const char *_dl_progname=\""$(UCLIBC_LDSO)"\";" > _dl_progname.h
|
|
+ echo "#include \"$(TARGET_ARCH)/elfinterp.c\"" >> _dl_progname.h
|
|
+
|
|
+
|
|
+$(COBJS): %.o : %.c
|
|
+ $(CC) $(XXFLAGS) -I../libdl -c $< -o $@
|
|
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
|
|
+
|
|
+$(AOBJS): %.o : %.S
|
|
+ $(CC) $(XXFLAGS) -I../libdl -c $< -o $@
|
|
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
|
|
+
|
|
+ldso.o: ldso.c hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c _dl_progname.h
|
|
+
|
|
+clean:
|
|
+ $(RM) $(UCLIBC_LDSO)* $(OBJS) $(LDSO_FULLNAME)* core *.o *.a *.s *.i _dl_progname.h ldso.h *~
|
|
diff -urN uClibc/ldso-0.9.24/ldso/arm/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/arm/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/arm/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/arm/boot1_arch.h 2002-11-13 18:53:49.000000000 -0600
|
|
@@ -0,0 +1,30 @@
|
|
+/* Any assmbly language/system dependent hacks needed to setup boot1.c so it
|
|
+ * will work as expected and cope with whatever platform specific wierdness is
|
|
+ * needed for this architecture. */
|
|
+
|
|
+/* Overrive the default _dl_boot function, and replace it with a bit of asm.
|
|
+ * Then call the real _dl_boot function, which is now named _dl_boot2. */
|
|
+
|
|
+asm("" \
|
|
+" .text\n" \
|
|
+" .globl _dl_boot\n" \
|
|
+"_dl_boot:\n" \
|
|
+" mov r7, sp\n" \
|
|
+" @ldr r0, [sp], #4\n" \
|
|
+" mov r0, sp\n" \
|
|
+" bl _dl_boot2\n" \
|
|
+" mov r6, r0\n" \
|
|
+" mov r0, r7\n" \
|
|
+" mov pc, r6\n" \
|
|
+);
|
|
+
|
|
+#define _dl_boot _dl_boot2
|
|
+#define LD_BOOT(X) static void * __attribute__ ((unused)) _dl_boot (X)
|
|
+
|
|
+
|
|
+ /* It seems ARM needs an offset here */
|
|
+#undef ELFMAGIC
|
|
+#define ELFMAGIC ELFMAG+load_addr
|
|
+
|
|
+
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/arm/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/arm/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/arm/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/arm/elfinterp.c 2002-11-07 21:20:59.000000000 -0600
|
|
@@ -0,0 +1,462 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* ARM ELF shared library loader suppport
|
|
+ *
|
|
+ * Copyright (C) 2001-2002, Erik Andersen
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char *_dl_reltypes_tab[] =
|
|
+{
|
|
+ [0] "R_ARM_NONE", "R_ARM_PC24", "R_ARM_ABS32", "R_ARM_REL32",
|
|
+ [4] "R_ARM_PC13", "R_ARM_ABS16", "R_ARM_ABS12", "R_ARM_THM_ABS5",
|
|
+ [8] "R_ARM_ABS8", "R_ARM_SBREL32","R_ARM_THM_PC22", "R_ARM_THM_PC8",
|
|
+ [12] "R_ARM_AMP_VCALL9", "R_ARM_SWI24", "R_ARM_THM_SWI8", "R_ARM_XPC25",
|
|
+ [16] "R_ARM_THM_XPC22",
|
|
+ [20] "R_ARM_COPY", "R_ARM_GLOB_DAT","R_ARM_JUMP_SLOT", "R_ARM_RELATIVE",
|
|
+ [24] "R_ARM_GOTOFF", "R_ARM_GOTPC", "R_ARM_GOT32", "R_ARM_PLT32",
|
|
+ [32] "R_ARM_ALU_PCREL_7_0","R_ARM_ALU_PCREL_15_8","R_ARM_ALU_PCREL_23_15","R_ARM_LDR_SBREL_11_0",
|
|
+ [36] "R_ARM_ALU_SBREL_19_12","R_ARM_ALU_SBREL_27_20",
|
|
+ [100] "R_ARM_GNU_VTENTRY","R_ARM_GNU_VTINHERIT","R_ARM_THM_PC11","R_ARM_THM_PC9",
|
|
+ [249] "R_ARM_RXPC25", "R_ARM_RSBREL32", "R_ARM_THM_RPC22", "R_ARM_RREL32",
|
|
+ [253] "R_ARM_RABS22", "R_ARM_RPC24", "R_ARM_RBASE",
|
|
+};
|
|
+
|
|
+static const char *
|
|
+_dl_reltypes(int type)
|
|
+{
|
|
+ static char buf[22];
|
|
+ const char *str;
|
|
+
|
|
+ if (type >= (sizeof (_dl_reltypes_tab)/sizeof(_dl_reltypes_tab[0])) ||
|
|
+ NULL == (str = _dl_reltypes_tab[type]))
|
|
+ {
|
|
+ str =_dl_simple_ltoa( buf, (unsigned long)(type));
|
|
+ }
|
|
+ return str;
|
|
+}
|
|
+
|
|
+static
|
|
+void debug_sym(Elf32_Sym *symtab,char *strtab,int symtab_index)
|
|
+{
|
|
+ if(_dl_debug_symbols)
|
|
+ {
|
|
+ if(symtab_index){
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ symtab[symtab_index].st_value,
|
|
+ symtab[symtab_index].st_size,
|
|
+ symtab[symtab_index].st_info,
|
|
+ symtab[symtab_index].st_other,
|
|
+ symtab[symtab_index].st_shndx);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+static void debug_reloc(Elf32_Sym *symtab,char *strtab, ELF_RELOC *rpnt)
|
|
+{
|
|
+ if(_dl_debug_reloc)
|
|
+ {
|
|
+ int symtab_index;
|
|
+ const char *sym;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ sym = symtab_index ? strtab + symtab[symtab_index].st_name : "sym=0x0";
|
|
+
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\toffset=%x\taddend=%x %s",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset,
|
|
+ rpnt->r_addend,
|
|
+ sym);
|
|
+#else
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\toffset=%x %s",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset,
|
|
+ sym);
|
|
+#endif
|
|
+ }
|
|
+}
|
|
+#endif
|
|
+
|
|
+/* Program to load an ELF binary on a linux system, and run it.
|
|
+ References to symbols in sharable libraries can be resolved by either
|
|
+ an ELF sharable library or a linux style of shared library. */
|
|
+
|
|
+/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
|
|
+ I ever taken any courses on internals. This program was developed using
|
|
+ information available through the book "UNIX SYSTEM V RELEASE 4,
|
|
+ Programmers guide: Ansi C and Programming Support Tools", which did
|
|
+ a more than adequate job of explaining everything required to get this
|
|
+ working. */
|
|
+
|
|
+extern int _dl_linux_resolve(void);
|
|
+
|
|
+unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
|
|
+{
|
|
+ int reloc_type;
|
|
+ ELF_RELOC *this_reloc;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *rel_addr;
|
|
+ int symtab_index;
|
|
+ char *new_addr;
|
|
+ char **got_addr;
|
|
+ unsigned long instr_addr;
|
|
+
|
|
+ rel_addr = (ELF_RELOC *) (tpnt->dynamic_info[DT_JMPREL] + tpnt->loadaddr);
|
|
+
|
|
+ this_reloc = rel_addr + (reloc_entry >> 3);
|
|
+ reloc_type = ELF32_R_TYPE(this_reloc->r_info);
|
|
+ symtab_index = ELF32_R_SYM(this_reloc->r_info);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+
|
|
+ if (reloc_type != R_ARM_JUMP_SLOT) {
|
|
+ _dl_dprintf(2, "%s: Incorrect relocation type in jump relocations\n",
|
|
+ _dl_progname);
|
|
+ _dl_exit(1);
|
|
+ };
|
|
+
|
|
+ /* Address of jump instruction to fix up */
|
|
+ instr_addr = ((unsigned long) this_reloc->r_offset +
|
|
+ (unsigned long) tpnt->loadaddr);
|
|
+ got_addr = (char **) instr_addr;
|
|
+
|
|
+ /* Get the address of the GOT entry */
|
|
+ new_addr = _dl_find_hash(strtab + symtab[symtab_index].st_name,
|
|
+ tpnt->symbol_scope, tpnt, resolver);
|
|
+ if (!new_addr) {
|
|
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, strtab + symtab[symtab_index].st_name);
|
|
+ _dl_exit(1);
|
|
+ };
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if ((unsigned long) got_addr < 0x40000000)
|
|
+ {
|
|
+ if (_dl_debug_bindings)
|
|
+ {
|
|
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s",
|
|
+ strtab + symtab[symtab_index].st_name);
|
|
+ if(_dl_debug_detail) _dl_dprintf(_dl_debug_file,
|
|
+ "\tpatch %x ==> %x @ %x", *got_addr, new_addr, got_addr);
|
|
+ }
|
|
+ }
|
|
+ if (!_dl_debug_nofixups) {
|
|
+ *got_addr = new_addr;
|
|
+ }
|
|
+#else
|
|
+ *got_addr = new_addr;
|
|
+#endif
|
|
+
|
|
+ return (unsigned long) new_addr;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ unsigned long rel_addr, unsigned long rel_size,
|
|
+ int (*reloc_fnc) (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab))
|
|
+{
|
|
+ int i;
|
|
+ char *strtab;
|
|
+ int goof = 0;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *rpnt;
|
|
+ int symtab_index;
|
|
+ /* Now parse the relocation information */
|
|
+
|
|
+ rpnt = (ELF_RELOC *) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size = rel_size / sizeof(ELF_RELOC);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++) {
|
|
+ int res;
|
|
+
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+
|
|
+ /* When the dynamic linker bootstrapped itself, it resolved some symbols.
|
|
+ Make sure we do not do them again */
|
|
+ if (!symtab_index && tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+ if (symtab_index && tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ debug_sym(symtab,strtab,symtab_index);
|
|
+ debug_reloc(symtab,strtab,rpnt);
|
|
+#endif
|
|
+
|
|
+ res = reloc_fnc (tpnt, scope, rpnt, symtab, strtab);
|
|
+
|
|
+ if (res==0) continue;
|
|
+
|
|
+ _dl_dprintf(2, "\n%s: ",_dl_progname);
|
|
+
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "symbol '%s': ", strtab + symtab[symtab_index].st_name);
|
|
+
|
|
+ if (res <0)
|
|
+ {
|
|
+ int reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "can't handle reloc type %s\n ", _dl_reltypes(reloc_type));
|
|
+#else
|
|
+ _dl_dprintf(2, "can't handle reloc type %x\n", reloc_type);
|
|
+#endif
|
|
+ _dl_exit(-res);
|
|
+ }
|
|
+ else if (res >0)
|
|
+ {
|
|
+ _dl_dprintf(2, "can't resolve symbol\n");
|
|
+ goof += res;
|
|
+ }
|
|
+ }
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+static unsigned long
|
|
+fix_bad_pc24 (unsigned long *const reloc_addr, unsigned long value)
|
|
+{
|
|
+ static void *fix_page;
|
|
+ static unsigned int fix_offset;
|
|
+ unsigned int *fix_address;
|
|
+ if (! fix_page)
|
|
+ {
|
|
+ fix_page = _dl_mmap (NULL, 4096 , PROT_READ | PROT_WRITE | PROT_EXEC,
|
|
+ MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
|
|
+ fix_offset = 0;
|
|
+ }
|
|
+
|
|
+ fix_address = (unsigned int *)(fix_page + fix_offset);
|
|
+ fix_address[0] = 0xe51ff004; /* ldr pc, [pc, #-4] */
|
|
+ fix_address[1] = value;
|
|
+
|
|
+ fix_offset += 8;
|
|
+ if (fix_offset >= 4096)
|
|
+ fix_page = NULL;
|
|
+
|
|
+ return (unsigned long)fix_address;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+ int goof = 0;
|
|
+
|
|
+ reloc_addr = (unsigned long *) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+
|
|
+ if (symtab_index) {
|
|
+
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(strtab + symtab[symtab_index].st_name,
|
|
+ scope, (reloc_type == R_ARM_JUMP_SLOT ? tpnt : NULL), symbolrel);
|
|
+
|
|
+ /*
|
|
+ * We want to allow undefined references to weak symbols - this might
|
|
+ * have been intentional. We should not be linking local symbols
|
|
+ * here, so all bases should be covered.
|
|
+ */
|
|
+ if (!symbol_addr && ELF32_ST_BIND(symtab[symtab_index].st_info) == STB_GLOBAL) {
|
|
+ goof++;
|
|
+ }
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ {
|
|
+ unsigned long old_val = *reloc_addr;
|
|
+#endif
|
|
+ switch (reloc_type) {
|
|
+ case R_ARM_NONE:
|
|
+ break;
|
|
+ case R_ARM_ABS32:
|
|
+ *reloc_addr += symbol_addr;
|
|
+ break;
|
|
+ case R_ARM_PC24:
|
|
+ {
|
|
+ unsigned long addend;
|
|
+ long newvalue, topbits;
|
|
+
|
|
+ addend = *reloc_addr & 0x00ffffff;
|
|
+ if (addend & 0x00800000) addend |= 0xff000000;
|
|
+
|
|
+ newvalue = symbol_addr - (unsigned long)reloc_addr + (addend << 2);
|
|
+ topbits = newvalue & 0xfe000000;
|
|
+ if (topbits != 0xfe000000 && topbits != 0x00000000)
|
|
+ {
|
|
+ newvalue = fix_bad_pc24(reloc_addr, symbol_addr)
|
|
+ - (unsigned long)reloc_addr + (addend << 2);
|
|
+ topbits = newvalue & 0xfe000000;
|
|
+ if (topbits != 0xfe000000 && topbits != 0x00000000)
|
|
+ {
|
|
+ _dl_dprintf(2,"symbol '%s': R_ARM_PC24 relocation out of range.",
|
|
+ symtab[symtab_index].st_name);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+ }
|
|
+ newvalue >>= 2;
|
|
+ symbol_addr = (*reloc_addr & 0xff000000) | (newvalue & 0x00ffffff);
|
|
+ *reloc_addr = symbol_addr;
|
|
+ break;
|
|
+ }
|
|
+ case R_ARM_GLOB_DAT:
|
|
+ case R_ARM_JUMP_SLOT:
|
|
+ *reloc_addr = symbol_addr;
|
|
+ break;
|
|
+ case R_ARM_RELATIVE:
|
|
+ *reloc_addr += (unsigned long) tpnt->loadaddr;
|
|
+ break;
|
|
+ case R_ARM_COPY:
|
|
+#if 0
|
|
+ /* Do this later */
|
|
+ _dl_dprintf(2, "Doing copy for symbol ");
|
|
+ if (symtab_index) _dl_dprintf(2, strtab + symtab[symtab_index].st_name);
|
|
+ _dl_dprintf(2, "\n");
|
|
+ _dl_memcpy((void *) symtab[symtab_index].st_value,
|
|
+ (void *) symbol_addr, symtab[symtab_index].st_size);
|
|
+#endif
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /*call _dl_exit(1) */
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatch: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+ }
|
|
+
|
|
+#endif
|
|
+
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_lazy_reloc (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ unsigned long *reloc_addr;
|
|
+
|
|
+ reloc_addr = (unsigned long *) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ {
|
|
+ unsigned long old_val = *reloc_addr;
|
|
+#endif
|
|
+ switch (reloc_type) {
|
|
+ case R_ARM_NONE:
|
|
+ break;
|
|
+ case R_ARM_JUMP_SLOT:
|
|
+ *reloc_addr += (unsigned long) tpnt->loadaddr;
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /*call _dl_exit(1) */
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatch: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+ }
|
|
+
|
|
+#endif
|
|
+ return 0;
|
|
+
|
|
+}
|
|
+
|
|
+/* This is done as a separate step, because there are cases where
|
|
+ information is first copied and later initialized. This results in
|
|
+ the wrong information being copied. Someone at Sun was complaining about
|
|
+ a bug in the handling of _COPY by SVr4, and this may in fact be what he
|
|
+ was talking about. Sigh. */
|
|
+
|
|
+/* No, there are cases where the SVr4 linker fails to emit COPY relocs
|
|
+ at all */
|
|
+static int
|
|
+_dl_do_copy (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+ int goof = 0;
|
|
+
|
|
+ reloc_addr = (unsigned long *) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ if (reloc_type != R_ARM_COPY)
|
|
+ return 0;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+
|
|
+ if (symtab_index) {
|
|
+
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(strtab +
|
|
+ symtab[symtab_index].st_name, scope,
|
|
+ NULL, copyrel);
|
|
+ if (!symbol_addr) goof++;
|
|
+ }
|
|
+ if (!goof) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_move)
|
|
+ _dl_dprintf(_dl_debug_file,"\n%s move %x bytes from %x to %x",
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ symtab[symtab_index].st_size,
|
|
+ symbol_addr, symtab[symtab_index].st_value);
|
|
+#endif
|
|
+ _dl_memcpy((char *) symtab[symtab_index].st_value,
|
|
+ (char *) symbol_addr, symtab[symtab_index].st_size);
|
|
+ }
|
|
+
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ (void)_dl_parse(tpnt, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ return _dl_parse(tpnt, tpnt->symbol_scope, rel_addr, rel_size, _dl_do_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_copy_information(struct dyn_elf *xpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ return _dl_parse(xpnt->dyn, xpnt->next, rel_addr, rel_size, _dl_do_copy);
|
|
+}
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/arm/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/arm/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/arm/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/arm/ld_syscalls.h 2003-09-09 01:11:11.000000000 -0500
|
|
@@ -0,0 +1,19 @@
|
|
+/* Define the __set_errno macro as nothing so that INLINE_SYSCALL
|
|
+ * won't set errno, which is important since we make system calls
|
|
+ * before the errno symbol is dynamicly linked. */
|
|
+
|
|
+#define __set_errno(X) {(void)(X);}
|
|
+
|
|
+/* Prepare for the case that `__builtin_expect' is not available. */
|
|
+#if __GNUC__ == 2 && __GNUC_MINOR__ < 96
|
|
+#define __builtin_expect(x, expected_value) (x)
|
|
+#endif
|
|
+#ifndef likely
|
|
+# define likely(x) __builtin_expect((!!(x)),1)
|
|
+#endif
|
|
+#ifndef unlikely
|
|
+# define unlikely(x) __builtin_expect((!!(x)),0)
|
|
+#endif
|
|
+
|
|
+#include "sys/syscall.h"
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/arm/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/arm/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/arm/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/arm/ld_sysdep.h 2002-08-09 09:41:04.000000000 -0500
|
|
@@ -0,0 +1,124 @@
|
|
+/*
|
|
+ * Various assmbly language/system dependent hacks that are required
|
|
+ * so that we can minimize the amount of platform specific code.
|
|
+ */
|
|
+
|
|
+/*
|
|
+ * Define this if the system uses RELOCA.
|
|
+ */
|
|
+#undef ELF_USES_RELOCA
|
|
+
|
|
+/*
|
|
+ * Get a pointer to the argv array. On many platforms this can be just
|
|
+ * the address if the first argument, on other platforms we need to
|
|
+ * do something a little more subtle here.
|
|
+ */
|
|
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long*) ARGS)
|
|
+
|
|
+/*
|
|
+ * Initialization sequence for a GOT.
|
|
+ */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) \
|
|
+{ \
|
|
+ GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
|
|
+ GOT_BASE[1] = (unsigned long) MODULE; \
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform a relocation. This is only used when
|
|
+ * bootstrapping the dynamic loader. RELP is the relocation that we
|
|
+ * are performing, REL is the pointer to the address we are relocating.
|
|
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
|
|
+ * load address.
|
|
+ */
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
|
|
+ switch(ELF32_R_TYPE((RELP)->r_info)){ \
|
|
+ case R_ARM_ABS32: \
|
|
+ *REL += SYMBOL; \
|
|
+ break; \
|
|
+ case R_ARM_PC24: \
|
|
+ { long newvalue, topbits; \
|
|
+ unsigned long addend = *REL & 0x00ffffff; \
|
|
+ if (addend & 0x00800000) addend |= 0xff000000; \
|
|
+ newvalue=SYMBOL-(unsigned long)REL+(addend<<2); \
|
|
+ topbits = newvalue & 0xfe000000; \
|
|
+ if (topbits!=0xfe000000&&topbits!=0x00000000){ \
|
|
+ newvalue = fix_bad_pc24(REL, SYMBOL) \
|
|
+ -(unsigned long)REL+(addend<<2); \
|
|
+ topbits = newvalue & 0xfe000000; \
|
|
+ if (topbits!=0xfe000000&&topbits!=0x00000000){ \
|
|
+ SEND_STDERR("R_ARM_PC24 relocation out of range\n");\
|
|
+ _dl_exit(1); } } \
|
|
+ newvalue>>=2; \
|
|
+ SYMBOL=(*REL&0xff000000)|(newvalue & 0x00ffffff); \
|
|
+ *REL=SYMBOL; \
|
|
+ } \
|
|
+ break; \
|
|
+ case R_ARM_GLOB_DAT: \
|
|
+ case R_ARM_JUMP_SLOT: \
|
|
+ *REL = SYMBOL; \
|
|
+ break; \
|
|
+ case R_ARM_RELATIVE: \
|
|
+ *REL += (unsigned long) LOAD; \
|
|
+ break; \
|
|
+ case R_ARM_NONE: \
|
|
+ break; \
|
|
+ default: \
|
|
+ SEND_STDERR("Aiieeee!"); \
|
|
+ _dl_exit(1); \
|
|
+ }
|
|
+
|
|
+
|
|
+/*
|
|
+ * Transfer control to the user's application, once the dynamic loader
|
|
+ * is done. This routine has to exit the current function, then
|
|
+ * call the _dl_elf_main function.
|
|
+ */
|
|
+
|
|
+#define START() return _dl_elf_main;
|
|
+
|
|
+
|
|
+
|
|
+/* Here we define the magic numbers that this dynamic loader should accept */
|
|
+
|
|
+#define MAGIC1 EM_ARM
|
|
+#undef MAGIC2
|
|
+/* Used for error messages */
|
|
+#define ELF_TARGET "ARM"
|
|
+
|
|
+struct elf_resolve;
|
|
+unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
|
|
+
|
|
+static inline unsigned long arm_modulus(unsigned long m, unsigned long p) {
|
|
+ unsigned long i,t,inc;
|
|
+ i=p; t=0;
|
|
+ while(!(i&(1<<31))) {
|
|
+ i<<=1;
|
|
+ t++;
|
|
+ }
|
|
+ t--;
|
|
+ for(inc=t;inc>2;inc--) {
|
|
+ i=p<<inc;
|
|
+ if(i&(1<<31))
|
|
+ break;
|
|
+ while(m>=i) {
|
|
+ m-=i;
|
|
+ i<<=1;
|
|
+ if(i&(1<<31))
|
|
+ break;
|
|
+ if(i<p)
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+ while(m>=p) {
|
|
+ m-=p;
|
|
+ }
|
|
+ return m;
|
|
+}
|
|
+
|
|
+#define do_rem(result, n, base) result=arm_modulus(n,base);
|
|
+
|
|
+/* 4096 bytes alignment */
|
|
+#define PAGE_ALIGN 0xfffff000
|
|
+#define ADDR_ALIGN 0xfff
|
|
+#define OFFS_ALIGN 0x7ffff000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/arm/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/arm/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/arm/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/arm/resolve.S 2002-08-12 04:03:30.000000000 -0500
|
|
@@ -0,0 +1,43 @@
|
|
+/*
|
|
+ * This function is _not_ called directly. It is jumped to (so no return
|
|
+ * address is on the stack) when attempting to use a symbol that has not yet
|
|
+ * been resolved. The first time a jump symbol (such as a function call inside
|
|
+ * a shared library) is used (before it gets resolved) it will jump here to
|
|
+ * _dl_linux_resolve. When we get called the stack looks like this:
|
|
+ * reloc_entry
|
|
+ * tpnt
|
|
+ *
|
|
+ * This function saves all the registers, puts a copy of reloc_entry and tpnt
|
|
+ * on the stack (as function arguments) then make the function call
|
|
+ * _dl_linux_resolver(tpnt, reloc_entry). _dl_linux_resolver() figures out
|
|
+ * where the jump symbol is _really_ supposed to have jumped to and returns
|
|
+ * that to us. Once we have that, we overwrite tpnt with this fixed up
|
|
+ * address. We then clean up after ourselves, put all the registers back how we
|
|
+ * found them, then we jump to the fixed up address, which is where the jump
|
|
+ * symbol that got us here really wanted to jump to in the first place.
|
|
+ * -Erik Andersen
|
|
+ */
|
|
+
|
|
+#define sl r10
|
|
+#define fp r11
|
|
+#define ip r12
|
|
+
|
|
+.text
|
|
+.globl _dl_linux_resolve
|
|
+.type _dl_linux_resolve,%function
|
|
+.align 4;
|
|
+
|
|
+_dl_linux_resolve:
|
|
+ stmdb sp!, {r0, r1, r2, r3, sl, fp}
|
|
+ sub r1, ip, lr
|
|
+ sub r1, r1, #4
|
|
+ add r1, r1, r1
|
|
+ ldr r0, [lr, #-4]
|
|
+ mov r3,r0
|
|
+
|
|
+ bl _dl_linux_resolver
|
|
+
|
|
+ mov ip, r0
|
|
+ ldmia sp!, {r0, r1, r2, r3, sl, fp, lr}
|
|
+ mov pc,ip
|
|
+.size _dl_linux_resolve, .-_dl_linux_resolve
|
|
diff -urN uClibc/ldso-0.9.24/ldso/cris/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/cris/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/cris/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/cris/boot1_arch.h 2003-09-19 07:11:43.000000000 -0500
|
|
@@ -0,0 +1,17 @@
|
|
+/*
|
|
+ * This code fix the stack pointer so that the dynamic linker
|
|
+ * can find argc, argv and auxvt (Auxillary Vector Table).
|
|
+ */
|
|
+asm("" \
|
|
+" .text\n" \
|
|
+" .globl _dl_boot\n" \
|
|
+" .type _dl_boot,@function\n" \
|
|
+"_dl_boot:\n" \
|
|
+" move.d $sp,$r10\n" \
|
|
+" move.d $pc,$r9\n" \
|
|
+" add.d _dl_boot2 - ., $r9\n" \
|
|
+" jsr $r9\n" \
|
|
+);
|
|
+
|
|
+#define _dl_boot _dl_boot2
|
|
+#define LD_BOOT(X) static void * __attribute__ ((unused)) _dl_boot(X)
|
|
diff -urN uClibc/ldso-0.9.24/ldso/cris/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/cris/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/cris/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/cris/elfinterp.c 2003-09-30 06:51:11.000000000 -0500
|
|
@@ -0,0 +1,414 @@
|
|
+/*
|
|
+ * CRIS ELF shared library loader support.
|
|
+ *
|
|
+ * Program to load an elf binary on a linux system, and run it.
|
|
+ * References to symbols in sharable libraries can be resolved
|
|
+ * by either an ELF sharable library or a linux style of shared
|
|
+ * library.
|
|
+ *
|
|
+ * Copyright (C) 2002, Axis Communications AB
|
|
+ * All rights reserved
|
|
+ *
|
|
+ * Author: Tobias Anderberg, <tobiasa@axis.com>
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+/* Support for the LD_DEBUG variable. */
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char *_dl_reltypes_tab[] = {
|
|
+ [0] "R_CRIS_NONE", "R_CRIS_8", "R_CRIS_16", "R_CRIS_32",
|
|
+ [4] "R_CRIS_8_PCREL", "R_CRIS_16_PCREL", "R_CRIS_32_PCREL", "R_CRIS_GNU_VTINHERIT",
|
|
+ [8] "R_CRIS_GNU_VTENTRY", "R_CRIS_COPY", "R_CRIS_GLOB_DAT", "R_CRIS_JUMP_SLOT",
|
|
+ [16] "R_CRIS_RELATIVE", "R_CRIS_16_GOT", "R_CRIS_32_GOT", "R_CRIS_16_GOTPLT",
|
|
+ [32] "R_CRIS_32_GOTPLT", "R_CRIS_32_GOTREL", "R_CRIS_32_PLT_GOTREL", "R_CRIS_32_PLT_PCREL",
|
|
+
|
|
+};
|
|
+
|
|
+
|
|
+static const char *
|
|
+_dl_reltypes(int type)
|
|
+{
|
|
+ const char *str;
|
|
+ static char buf[22];
|
|
+
|
|
+ if (type >= (sizeof(_dl_reltypes_tab)/sizeof(_dl_reltypes_tab[0])) ||
|
|
+ NULL == (str = _dl_reltypes_tab[type]))
|
|
+ str = _dl_simple_ltoa(buf, (unsigned long) (type));
|
|
+
|
|
+ return str;
|
|
+}
|
|
+
|
|
+static void
|
|
+debug_sym(Elf32_Sym *symtab, char *strtab, int symtab_index)
|
|
+{
|
|
+ if (_dl_debug_symbols) {
|
|
+ if (symtab_index) {
|
|
+ _dl_dprintf(_dl_debug_file,
|
|
+ "\n%s\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ symtab[symtab_index].st_value,
|
|
+ symtab[symtab_index].st_size,
|
|
+ symtab[symtab_index].st_info,
|
|
+ symtab[symtab_index].st_other,
|
|
+ symtab[symtab_index].st_shndx);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+static void
|
|
+debug_reloc(Elf32_Sym *symtab, char *strtab, ELF_RELOC *rpnt)
|
|
+{
|
|
+ if (_dl_debug_reloc) {
|
|
+ int symtab_index;
|
|
+ const char *sym;
|
|
+
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ sym = symtab_index ? strtab + symtab[symtab_index].st_name : "sym=0x0";
|
|
+
|
|
+ if (_dl_debug_symbols)
|
|
+ _dl_dprintf(_dl_debug_file, "\n\t");
|
|
+ else
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\t", sym);
|
|
+
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\taddend=%x",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset,
|
|
+ rpnt->r_addend);
|
|
+#else
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset%x\n",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset);
|
|
+#endif
|
|
+ }
|
|
+}
|
|
+#endif /* __SUPPORT_LD_DEBUG__ */
|
|
+
|
|
+/* Defined in resolve.S. */
|
|
+extern int _dl_linux_resolv(void);
|
|
+
|
|
+unsigned long
|
|
+_dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ char *strtab;
|
|
+ char *symname;
|
|
+ char *new_addr;
|
|
+ char *rel_addr;
|
|
+ char **got_addr;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *this_reloc;
|
|
+ unsigned long instr_addr;
|
|
+
|
|
+ rel_addr = (char *) (tpnt->dynamic_info[DT_JMPREL] + tpnt->loadaddr);
|
|
+
|
|
+ this_reloc = (ELF_RELOC *) (intptr_t)(rel_addr + reloc_entry);
|
|
+ reloc_type = ELF32_R_TYPE(this_reloc->r_info);
|
|
+ symtab_index = ELF32_R_SYM(this_reloc->r_info);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (intptr_t)(tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *)(tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (reloc_type != R_CRIS_JUMP_SLOT) {
|
|
+ _dl_dprintf(2, "%s: Incorrect relocation type for jump relocations.\n",
|
|
+ _dl_progname);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+
|
|
+ /* Fetch the address of the jump instruction to fix up. */
|
|
+ instr_addr = ((unsigned long) this_reloc->r_offset + (unsigned long) tpnt->loadaddr);
|
|
+ got_addr = (char **) instr_addr;
|
|
+
|
|
+ /* Fetch the address of the GOT entry. */
|
|
+ new_addr = _dl_find_hash(symname, tpnt->symbol_scope, tpnt, resolver);
|
|
+
|
|
+ if (!new_addr) {
|
|
+ new_addr = _dl_find_hash(symname, NULL, NULL, resolver);
|
|
+
|
|
+ if (new_addr)
|
|
+ return (unsigned long) new_addr;
|
|
+
|
|
+ _dl_dprintf(2, "%s: Can't resolv symbol '%s'\n", _dl_progname, symname);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if (_dl_debug_bindings) {
|
|
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s", symname);
|
|
+
|
|
+ if (_dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatch %x ==> %x @ %x", *got_addr, new_addr, got_addr);
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ *got_addr = new_addr;
|
|
+ return (unsigned long) new_addr;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int (*reloc_fnc)(struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab))
|
|
+{
|
|
+ int symtab_index;
|
|
+ int res;
|
|
+ unsigned int i;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *rpnt;
|
|
+
|
|
+ /* Parse the relocation information. */
|
|
+ rpnt = (ELF_RELOC *) (intptr_t) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size /= sizeof(ELF_RELOC);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (intptr_t) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++) {
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+
|
|
+ /*
|
|
+ * Make sure the same symbols that the linker resolved when it
|
|
+ * bootstapped itself isn't resolved again.
|
|
+ */
|
|
+ if (!symtab_index && tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+
|
|
+ if (symtab_index && tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ debug_sym(symtab, strtab, symtab_index);
|
|
+ debug_reloc(symtab, strtab, rpnt);
|
|
+#endif
|
|
+
|
|
+ /* Pass over to actual relocation function. */
|
|
+ res = reloc_fnc(tpnt, scope, rpnt, symtab, strtab);
|
|
+
|
|
+ if (res == 0)
|
|
+ continue;
|
|
+
|
|
+ _dl_dprintf(2, "\n%s: ", _dl_progname);
|
|
+
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "symbol '%s': ", strtab + symtab[symtab_index].st_name);
|
|
+
|
|
+ if (res < 0) {
|
|
+ int reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "can't handle relocation type '%s'\n", _dl_reltypes(reloc_type));
|
|
+#else
|
|
+ _dl_dprintf(2, "can't handle relocation type %x\n", reloc_type);
|
|
+#endif
|
|
+ _dl_exit(-res);
|
|
+ }
|
|
+ else if (res > 0) {
|
|
+ _dl_dprintf(2, "can't resolv symbol\n");
|
|
+ return res;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope, ELF_RELOC *rpnt,
|
|
+ Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ char *symname;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned symbol_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t)(tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (symtab_index) {
|
|
+ if (symtab[symtab_index].st_shndx != SHN_UNDEF &&
|
|
+ ELF32_ST_BIND(symtab[symtab_index].st_info) == STB_LOCAL) {
|
|
+ symbol_addr = (unsigned long) tpnt->loadaddr;
|
|
+ }
|
|
+ else {
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope,
|
|
+ (reloc_type == R_CRIS_JUMP_SLOT ? tpnt : NULL), symbolrel);
|
|
+ }
|
|
+
|
|
+ if (!symbol_addr && ELF32_ST_BIND(symtab[symtab_index].st_info) == STB_GLOBAL) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "\tglobal symbol '%s' already defined in '%s'\n",
|
|
+ symname, tpnt->libname);
|
|
+#endif
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ symbol_addr += rpnt->r_addend;
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+
|
|
+ switch (reloc_type) {
|
|
+ case R_CRIS_NONE:
|
|
+ break;
|
|
+ case R_CRIS_GLOB_DAT:
|
|
+ case R_CRIS_JUMP_SLOT:
|
|
+ case R_CRIS_32:
|
|
+ case R_CRIS_COPY:
|
|
+ *reloc_addr = symbol_addr;
|
|
+ break;
|
|
+ case R_CRIS_RELATIVE:
|
|
+ *reloc_addr = (unsigned long) tpnt->loadaddr + rpnt->r_addend;
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /* Call _dl_exit(1). */
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if (_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_lazy_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope, ELF_RELOC *rpnt,
|
|
+ Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ unsigned long *reloc_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+
|
|
+ /* Don't care about these, just keep the compiler happy. */
|
|
+ (void) scope;
|
|
+ (void) symtab;
|
|
+ (void) strtab;
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t)(tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+
|
|
+ switch (reloc_type) {
|
|
+ case R_CRIS_NONE:
|
|
+ break;
|
|
+ case R_CRIS_JUMP_SLOT:
|
|
+ *reloc_addr += (unsigned long) tpnt->loadaddr;
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /* Calls _dl_exit(1). */
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if (_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_copy_reloc(struct elf_resolve *tpnt, struct dyn_elf *scope, ELF_RELOC *rpnt,
|
|
+ Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int goof;
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ char *symname;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+
|
|
+ if (reloc_type != R_CRIS_COPY)
|
|
+ return 0;
|
|
+
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+ goof = 0;
|
|
+
|
|
+ if (symtab_index) {
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope, NULL, copyrel);
|
|
+
|
|
+ if (!symbol_addr)
|
|
+ goof++;
|
|
+ }
|
|
+
|
|
+ if (!goof) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if (_dl_debug_move)
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s move %x bytes from %x to %x",
|
|
+ symname, symtab[symtab_index].st_size, symbol_addr, symtab[symtab_index].st_value);
|
|
+#endif
|
|
+ _dl_memcpy((char *) symtab[symtab_index].st_value,
|
|
+ (char *) symbol_addr, symtab[symtab_index].st_size);
|
|
+ }
|
|
+
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+/* External interface to the generic part of the dynamic linker. */
|
|
+
|
|
+int
|
|
+_dl_parse_relocation_information(struct elf_resolve *tpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ /* Keep the compiler happy. */
|
|
+ (void) type;
|
|
+ return _dl_parse(tpnt, tpnt->symbol_scope, rel_addr, rel_size, _dl_do_reloc);
|
|
+}
|
|
+void
|
|
+_dl_parse_lazy_relocation_information(struct elf_resolve *tpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ /* Keep the compiler happy. */
|
|
+ (void) type;
|
|
+ _dl_parse(tpnt, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
|
|
+}
|
|
+
|
|
+int
|
|
+_dl_parse_copy_information(struct dyn_elf *xpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ /* Keep the compiler happy. */
|
|
+ (void) type;
|
|
+ return _dl_parse(xpnt->dyn, xpnt->next, rel_addr, rel_size, _dl_do_copy_reloc);
|
|
+}
|
|
diff -urN uClibc/ldso-0.9.24/ldso/cris/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/cris/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/cris/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/cris/ld_syscalls.h 2002-09-23 05:37:16.000000000 -0500
|
|
@@ -0,0 +1,7 @@
|
|
+/*
|
|
+ * Define the __set_errno macro as nothing so that INLINE_SYSCALL
|
|
+ * won't set errno, which is important since we make system calls
|
|
+ * before the errno symbol is dynamicly linked.
|
|
+ */
|
|
+#define __set_errno(X) {(void)(X);}
|
|
+#include "sys/syscall.h"
|
|
diff -urN uClibc/ldso-0.9.24/ldso/cris/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/cris/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/cris/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/cris/ld_sysdep.h 2003-08-27 07:59:23.000000000 -0500
|
|
@@ -0,0 +1,112 @@
|
|
+/* CRIS can never use Elf32_Rel relocations. */
|
|
+#define ELF_USES_RELOCA
|
|
+
|
|
+/*
|
|
+ * Get a pointer to the argv array. On many platforms this can be just
|
|
+ * the address if the first argument, on other platforms we need to
|
|
+ * do something a little more subtle here.
|
|
+ */
|
|
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *) ARGS)
|
|
+
|
|
+/*
|
|
+ * Initialization sequence for a GOT.
|
|
+ */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) \
|
|
+{ \
|
|
+ GOT_BASE[1] = (unsigned long) MODULE; \
|
|
+ GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform a relocation. This is only used when
|
|
+ * bootstrapping the dynamic loader. RELP is the relocation that we
|
|
+ * are performing, REL is the pointer to the address we are relocating.
|
|
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
|
|
+ * load address.
|
|
+ */
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP, REL, SYMBOL, LOAD) \
|
|
+ switch (ELF32_R_TYPE((RELP)->r_info)) { \
|
|
+ case R_CRIS_GLOB_DAT: \
|
|
+ case R_CRIS_JUMP_SLOT: \
|
|
+ case R_CRIS_32: \
|
|
+ *REL = SYMBOL; \
|
|
+ break; \
|
|
+ case R_CRIS_16_PCREL: \
|
|
+ *(short *) *REL = SYMBOL + (RELP)->r_addend - *REL - 2; \
|
|
+ break; \
|
|
+ case R_CRIS_32_PCREL: \
|
|
+ *REL = SYMBOL + (RELP)->r_addend - *REL - 4; \
|
|
+ break; \
|
|
+ case R_CRIS_NONE: \
|
|
+ break; \
|
|
+ case R_CRIS_RELATIVE: \
|
|
+ *REL = (unsigned long) LOAD + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ default: \
|
|
+ _dl_exit(1); \
|
|
+ break; \
|
|
+ }
|
|
+
|
|
+/*
|
|
+ * Transfer control to the user's application once the dynamic loader
|
|
+ * is done. This routine has to exit the current function, then call
|
|
+ * _dl_elf_main.
|
|
+ */
|
|
+#define START() __asm__ volatile ("moveq 0,$r8\n\t" \
|
|
+ "move $r8,$srp\n\t" \
|
|
+ "move.d %1,$sp\n\t" \
|
|
+ "jump %0\n\t" \
|
|
+ : : "r" (_dl_elf_main), "r" (args))
|
|
+
|
|
+/* Defined some magic numbers that this ld.so should accept. */
|
|
+#define MAGIC1 EM_CRIS
|
|
+#undef MAGIC2
|
|
+#define ELF_TARGET "CRIS"
|
|
+
|
|
+struct elf_resolve;
|
|
+extern unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry);
|
|
+
|
|
+/* Cheap modulo implementation, taken from arm/ld_sysdep.h. */
|
|
+static inline unsigned long
|
|
+cris_mod(unsigned long m, unsigned long p)
|
|
+{
|
|
+ unsigned long i, t, inc;
|
|
+
|
|
+ i = p;
|
|
+ t = 0;
|
|
+
|
|
+ while (!(i & (1 << 31))) {
|
|
+ i <<= 1;
|
|
+ t++;
|
|
+ }
|
|
+
|
|
+ t--;
|
|
+
|
|
+ for (inc = t; inc > 2; inc--) {
|
|
+ i = p << inc;
|
|
+
|
|
+ if (i & (1 << 31))
|
|
+ break;
|
|
+
|
|
+ while (m >= i) {
|
|
+ m -= i;
|
|
+ i <<= 1;
|
|
+ if (i & (1 << 31))
|
|
+ break;
|
|
+ if (i < p)
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ while (m >= p)
|
|
+ m -= p;
|
|
+
|
|
+ return m;
|
|
+}
|
|
+
|
|
+#define do_rem(result, n, base) result = cris_mod(n, base);
|
|
+
|
|
+/* 8192 bytes alignment */
|
|
+#define PAGE_ALIGN 0xffffe000
|
|
+#define ADDR_ALIGN 0x1fff
|
|
+#define OFFS_ALIGN 0xffffe000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/cris/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/cris/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/cris/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/cris/resolve.S 2002-09-16 03:11:43.000000000 -0500
|
|
@@ -0,0 +1,48 @@
|
|
+/*
|
|
+ * This function is _not_ called directly. It is jumped to from PLT when
|
|
+ * attempting to use a symbol that has not yet been resolved. The first
|
|
+ * time a jump symbol (such as a function call inside a shared library)
|
|
+ * is used (before it gets resolved) it will jump here. When we get called
|
|
+ * the stack contains reloc_offset and tpnt is in MOF.
|
|
+ *
|
|
+ * We save all the registers, setup R10 and R11 with the right arguments
|
|
+ * then call _dl_linux_resolver(tpnt, reloc_offset). _dl_linux_resolver()
|
|
+ * figures out where the jump symbol is _really_ supposed to have jumped to
|
|
+ * and returns that to us. Once we have that, we overwrite tpnt with this
|
|
+ * fixed up address. We then clean up after ourselves, put all the registers
|
|
+ * back how we found them, then we jump to where the fixed up address, which
|
|
+ * is where the jump symbol that got us here really wanted to jump to in the
|
|
+ * first place.
|
|
+ */
|
|
+
|
|
+.globl _dl_linux_resolve
|
|
+.type _dl_linux_resolve,@function
|
|
+
|
|
+_dl_linux_resolve:
|
|
+ push $r13
|
|
+ push $r12
|
|
+ push $r11
|
|
+ push $r10
|
|
+ push $r9
|
|
+ push $srp
|
|
+ move.d [$sp+6*4],$r11
|
|
+ move $mof,$r10
|
|
+#ifdef __PIC__
|
|
+ move.d $pc,$r0
|
|
+ sub.d .:GOTOFF,$r0
|
|
+ move.d _dl_linux_resolver:PLTG,$r9
|
|
+ add.d $r0,$r9
|
|
+ jsr $r9
|
|
+#else
|
|
+ jsr _dl_linux_resolver
|
|
+#endif
|
|
+ move.d $r10,[$sp+6*4]
|
|
+ pop $srp
|
|
+ pop $r9
|
|
+ pop $r10
|
|
+ pop $r11
|
|
+ pop $r12
|
|
+ pop $r13
|
|
+ jump [$sp+]
|
|
+
|
|
+ .size _dl_linux_resolve, . - _dl_linux_resolve
|
|
diff -urN uClibc/ldso-0.9.24/ldso/hash.c uClibc.ldso.24/ldso-0.9.24/ldso/hash.c
|
|
--- uClibc/ldso-0.9.24/ldso/hash.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/hash.c 2003-08-19 08:11:06.000000000 -0500
|
|
@@ -0,0 +1,327 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* Program to load an ELF binary on a linux system, and run it
|
|
+ * after resolving ELF shared library symbols
|
|
+ *
|
|
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
|
|
+ * David Engel, Hongjiu Lu and Mitch D'Souza
|
|
+ * Copyright (C) 2001-2002, Erik Andersen
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+
|
|
+/* Various symbol table handling functions, including symbol lookup */
|
|
+
|
|
+/*
|
|
+ * This is the start of the linked list that describes all of the files present
|
|
+ * in the system with pointers to all of the symbol, string, and hash tables,
|
|
+ * as well as all of the other good stuff in the binary.
|
|
+ */
|
|
+
|
|
+struct elf_resolve *_dl_loaded_modules = NULL;
|
|
+
|
|
+/*
|
|
+ * This is the list of modules that are loaded when the image is first
|
|
+ * started. As we add more via dlopen, they get added into other
|
|
+ * chains.
|
|
+ */
|
|
+struct dyn_elf *_dl_symbol_tables = NULL;
|
|
+
|
|
+/*
|
|
+ * This is the list of modules that are loaded via dlopen. We may need
|
|
+ * to search these for RTLD_GLOBAL files.
|
|
+ */
|
|
+struct dyn_elf *_dl_handles = NULL;
|
|
+
|
|
+
|
|
+/*
|
|
+ * This is the hash function that is used by the ELF linker to generate
|
|
+ * the hash table that each executable and library is required to
|
|
+ * have. We need it to decode the hash table.
|
|
+ */
|
|
+
|
|
+unsigned long _dl_elf_hash(const char *name)
|
|
+{
|
|
+ unsigned long hash = 0;
|
|
+ unsigned long tmp;
|
|
+
|
|
+ while (*name) {
|
|
+ hash = (hash << 4) + *name++;
|
|
+ if ((tmp = hash & 0xf0000000))
|
|
+ hash ^= tmp >> 24;
|
|
+ hash &= ~tmp;
|
|
+ };
|
|
+ return hash;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Check to see if a library has already been added to the hash chain.
|
|
+ */
|
|
+struct elf_resolve *_dl_check_hashed_files(const char *libname)
|
|
+{
|
|
+ struct elf_resolve *tpnt;
|
|
+ int len = _dl_strlen(libname);
|
|
+
|
|
+ for (tpnt = _dl_loaded_modules; tpnt; tpnt = tpnt->next) {
|
|
+ if (_dl_strncmp(tpnt->libname, libname, len) == 0 &&
|
|
+ (tpnt->libname[len] == '\0' || tpnt->libname[len] == '.'))
|
|
+ return tpnt;
|
|
+ }
|
|
+
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * We call this function when we have just read an ELF library or executable.
|
|
+ * We add the relevant info to the symbol chain, so that we can resolve all
|
|
+ * externals properly.
|
|
+ */
|
|
+
|
|
+struct elf_resolve *_dl_add_elf_hash_table(const char *libname,
|
|
+ char *loadaddr, unsigned long *dynamic_info, unsigned long dynamic_addr,
|
|
+ unsigned long dynamic_size)
|
|
+{
|
|
+ unsigned long *hash_addr;
|
|
+ struct elf_resolve *tpnt;
|
|
+ int i;
|
|
+
|
|
+ if (!_dl_loaded_modules) {
|
|
+ tpnt = _dl_loaded_modules =
|
|
+ (struct elf_resolve *) _dl_malloc(sizeof(struct elf_resolve));
|
|
+ _dl_memset(tpnt, 0, sizeof(struct elf_resolve));
|
|
+ } else {
|
|
+ tpnt = _dl_loaded_modules;
|
|
+ while (tpnt->next)
|
|
+ tpnt = tpnt->next;
|
|
+ tpnt->next = (struct elf_resolve *) _dl_malloc(sizeof(struct elf_resolve));
|
|
+ _dl_memset(tpnt->next, 0, sizeof(struct elf_resolve));
|
|
+ tpnt->next->prev = tpnt;
|
|
+ tpnt = tpnt->next;
|
|
+ };
|
|
+
|
|
+ tpnt->next = NULL;
|
|
+ tpnt->init_flag = 0;
|
|
+ tpnt->libname = _dl_strdup(libname);
|
|
+ tpnt->dynamic_addr = (ElfW(Dyn) *)dynamic_addr;
|
|
+ tpnt->dynamic_size = dynamic_size;
|
|
+ tpnt->libtype = loaded_file;
|
|
+
|
|
+ if (dynamic_info[DT_HASH] != 0) {
|
|
+ hash_addr = (unsigned long *) (intptr_t)(dynamic_info[DT_HASH] + loadaddr);
|
|
+ tpnt->nbucket = *hash_addr++;
|
|
+ tpnt->nchain = *hash_addr++;
|
|
+ tpnt->elf_buckets = hash_addr;
|
|
+ hash_addr += tpnt->nbucket;
|
|
+ tpnt->chains = hash_addr;
|
|
+ }
|
|
+ tpnt->loadaddr = (ElfW(Addr))loadaddr;
|
|
+ for (i = 0; i < 24; i++)
|
|
+ tpnt->dynamic_info[i] = dynamic_info[i];
|
|
+#ifdef __mips__
|
|
+ {
|
|
+ Elf32_Dyn *dpnt = (Elf32_Dyn *) dynamic_addr;
|
|
+
|
|
+ while(dpnt->d_tag) {
|
|
+ if (dpnt->d_tag == DT_MIPS_GOTSYM)
|
|
+ tpnt->mips_gotsym = dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_MIPS_LOCAL_GOTNO)
|
|
+ tpnt->mips_local_gotno = dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_MIPS_SYMTABNO)
|
|
+ tpnt->mips_symtabno = dpnt->d_un.d_val;
|
|
+ dpnt++;
|
|
+ }
|
|
+ }
|
|
+#endif
|
|
+ return tpnt;
|
|
+}
|
|
+
|
|
+
|
|
+/*
|
|
+ * This function resolves externals, and this is either called when we process
|
|
+ * relocations or when we call an entry in the PLT table for the first time.
|
|
+ */
|
|
+
|
|
+char *_dl_find_hash(const char *name, struct dyn_elf *rpnt1,
|
|
+ struct elf_resolve *f_tpnt, enum caller_type caller_type)
|
|
+{
|
|
+ struct elf_resolve *tpnt;
|
|
+ int si;
|
|
+ char *pnt;
|
|
+ int pass;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ unsigned long elf_hash_number, hn;
|
|
+ char *weak_result;
|
|
+ struct elf_resolve *first_def;
|
|
+ struct dyn_elf *rpnt, first;
|
|
+ char *data_result = 0; /* nakao */
|
|
+
|
|
+ weak_result = 0;
|
|
+ elf_hash_number = _dl_elf_hash(name);
|
|
+
|
|
+ /* A quick little hack to make sure that any symbol in the executable
|
|
+ will be preferred to one in a shared library. This is necessary so
|
|
+ that any shared library data symbols referenced in the executable
|
|
+ will be seen at the same address by the executable, shared libraries
|
|
+ and dynamically loaded code. -Rob Ryan (robr@cmu.edu) */
|
|
+ if (_dl_symbol_tables && !caller_type && rpnt1) {
|
|
+ first = (*_dl_symbol_tables);
|
|
+ first.next = rpnt1;
|
|
+ rpnt1 = (&first);
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * The passes are so that we can first search the regular symbols
|
|
+ * for whatever module was specified, and then search anything
|
|
+ * loaded with RTLD_GLOBAL. When pass is 1, it means we are just
|
|
+ * starting the first dlopened module, and anything above that
|
|
+ * is just the next one in the chain.
|
|
+ */
|
|
+ for (pass = 0; (1 == 1); pass++) {
|
|
+
|
|
+ /*
|
|
+ * If we are just starting to search for RTLD_GLOBAL, setup
|
|
+ * the pointer for the start of the search.
|
|
+ */
|
|
+ if (pass == 1) {
|
|
+ rpnt1 = _dl_handles;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Anything after this, we need to skip to the next module.
|
|
+ */
|
|
+ else if (pass >= 2) {
|
|
+ rpnt1 = rpnt1->next_handle;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Make sure we still have a module, and make sure that this
|
|
+ * module was loaded with RTLD_GLOBAL.
|
|
+ */
|
|
+ if (pass != 0) {
|
|
+ if (rpnt1 == NULL)
|
|
+ break;
|
|
+ if ((rpnt1->flags & RTLD_GLOBAL) == 0)
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ for (rpnt = (rpnt1 ? rpnt1 : _dl_symbol_tables); rpnt; rpnt = rpnt->next) {
|
|
+ tpnt = rpnt->dyn;
|
|
+
|
|
+ /*
|
|
+ * The idea here is that if we are using dlsym, we want to
|
|
+ * first search the entire chain loaded from dlopen, and
|
|
+ * return a result from that if we found anything. If this
|
|
+ * fails, then we continue the search into the stuff loaded
|
|
+ * when the image was activated. For normal lookups, we start
|
|
+ * with rpnt == NULL, so we should never hit this.
|
|
+ */
|
|
+ if (tpnt->libtype == elf_executable && weak_result != 0) {
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Avoid calling .urem here.
|
|
+ */
|
|
+ do_rem(hn, elf_hash_number, tpnt->nbucket);
|
|
+ symtab = (Elf32_Sym *) (intptr_t) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+ /*
|
|
+ * This crap is required because the first instance of a
|
|
+ * symbol on the chain will be used for all symbol references.
|
|
+ * Thus this instance must be resolved to an address that
|
|
+ * contains the actual function,
|
|
+ */
|
|
+
|
|
+ first_def = NULL;
|
|
+
|
|
+ for (si = tpnt->elf_buckets[hn]; si; si = tpnt->chains[si]) {
|
|
+ pnt = strtab + symtab[si].st_name;
|
|
+
|
|
+ if (_dl_strcmp(pnt, name) == 0 &&
|
|
+ symtab[si].st_value != 0)
|
|
+ {
|
|
+ if ((ELF32_ST_TYPE(symtab[si].st_info) == STT_FUNC ||
|
|
+ ELF32_ST_TYPE(symtab[si].st_info) == STT_NOTYPE ||
|
|
+ ELF32_ST_TYPE(symtab[si].st_info) == STT_OBJECT) &&
|
|
+ symtab[si].st_shndx != SHN_UNDEF) {
|
|
+
|
|
+ /* Here we make sure that we find a module where the symbol is
|
|
+ * actually defined.
|
|
+ */
|
|
+
|
|
+ if (f_tpnt) {
|
|
+ if (!first_def)
|
|
+ first_def = tpnt;
|
|
+ if (first_def == f_tpnt
|
|
+ && symtab[si].st_shndx == 0)
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ switch (ELF32_ST_BIND(symtab[si].st_info)) {
|
|
+ case STB_GLOBAL:
|
|
+ if (tpnt->libtype != elf_executable &&
|
|
+ ELF32_ST_TYPE(symtab[si].st_info)
|
|
+ == STT_NOTYPE)
|
|
+ { /* nakao */
|
|
+ data_result = (char *)tpnt->loadaddr +
|
|
+ symtab[si].st_value; /* nakao */
|
|
+ break; /* nakao */
|
|
+ } else /* nakao */
|
|
+ return (char*)tpnt->loadaddr + symtab[si].st_value;
|
|
+ case STB_WEAK:
|
|
+ if (!weak_result)
|
|
+ weak_result = (char *)tpnt->loadaddr + symtab[si].st_value;
|
|
+ break;
|
|
+ default: /* Do local symbols need to be examined? */
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+#ifndef __mips__
|
|
+ /*
|
|
+ * References to the address of a function from an executable file and
|
|
+ * the shared objects associated with it might not resolve to the same
|
|
+ * value. To allow comparisons of function addresses we must resolve
|
|
+ * to the address of the plt entry of the executable instead of the
|
|
+ * real function address.
|
|
+ * see "TIS ELF Specification Version 1.2, Book 3, A-11 (Function
|
|
+ * Adresses)
|
|
+ */
|
|
+ if (resolver != caller_type &&
|
|
+ NULL==f_tpnt && /*trick: don't handle R_??_JMP_SLOT reloc type*/
|
|
+ tpnt->libtype == elf_executable &&
|
|
+ ELF32_ST_TYPE(symtab[si].st_info) == STT_FUNC &&
|
|
+ symtab[si].st_shndx == SHN_UNDEF)
|
|
+ {
|
|
+ return (char*)symtab[si].st_value;
|
|
+ }
|
|
+#endif
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ if (data_result)
|
|
+ return data_result; /* nakao */
|
|
+ return weak_result;
|
|
+}
|
|
diff -urN uClibc/ldso-0.9.24/ldso/i386/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/i386/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/i386/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/i386/boot1_arch.h 2002-08-08 09:35:31.000000000 -0500
|
|
@@ -0,0 +1,7 @@
|
|
+/* Any assmbly language/system dependent hacks needed to setup boot1.c so it
|
|
+ * will work as expected and cope with whatever platform specific wierdness is
|
|
+ * needed for this architecture. See arm/boot1_arch.h for an example of what
|
|
+ * can be done.
|
|
+ */
|
|
+
|
|
+#define LD_BOOT(X) void _dl_boot (X)
|
|
diff -urN uClibc/ldso-0.9.24/ldso/i386/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/i386/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/i386/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/i386/elfinterp.c 2003-11-06 16:09:38.000000000 -0600
|
|
@@ -0,0 +1,415 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* i386 ELF shared library loader suppport
|
|
+ *
|
|
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
|
|
+ * David Engel, Hongjiu Lu and Mitch D'Souza
|
|
+ * Copyright (C) 2001-2002, Erik Andersen
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char *_dl_reltypes_tab[] =
|
|
+{
|
|
+ [0] "R_386_NONE", "R_386_32", "R_386_PC32", "R_386_GOT32",
|
|
+ [4] "R_386_PLT32", "R_386_COPY", "R_386_GLOB_DAT", "R_386_JMP_SLOT",
|
|
+ [8] "R_386_RELATIVE", "R_386_GOTOFF", "R_386_GOTPC",
|
|
+};
|
|
+
|
|
+static const char *
|
|
+_dl_reltypes(int type)
|
|
+{
|
|
+ static char buf[22];
|
|
+ const char *str;
|
|
+
|
|
+ if (type >= (int)(sizeof (_dl_reltypes_tab)/sizeof(_dl_reltypes_tab[0])) ||
|
|
+ NULL == (str = _dl_reltypes_tab[type]))
|
|
+ {
|
|
+ str =_dl_simple_ltoa( buf, (unsigned long)(type));
|
|
+ }
|
|
+ return str;
|
|
+}
|
|
+
|
|
+static
|
|
+void debug_sym(Elf32_Sym *symtab,char *strtab,int symtab_index)
|
|
+{
|
|
+ if(_dl_debug_symbols)
|
|
+ {
|
|
+ if(symtab_index){
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ symtab[symtab_index].st_value,
|
|
+ symtab[symtab_index].st_size,
|
|
+ symtab[symtab_index].st_info,
|
|
+ symtab[symtab_index].st_other,
|
|
+ symtab[symtab_index].st_shndx);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+static void debug_reloc(Elf32_Sym *symtab,char *strtab, ELF_RELOC *rpnt)
|
|
+{
|
|
+ if(_dl_debug_reloc)
|
|
+ {
|
|
+ int symtab_index;
|
|
+ const char *sym;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ sym = symtab_index ? strtab + symtab[symtab_index].st_name : "sym=0x0";
|
|
+
|
|
+ if(_dl_debug_symbols)
|
|
+ _dl_dprintf(_dl_debug_file, "\n\t");
|
|
+ else
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\t", sym);
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\taddend=%x",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset,
|
|
+ rpnt->r_addend);
|
|
+#else
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\n",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset);
|
|
+#endif
|
|
+ }
|
|
+}
|
|
+#endif
|
|
+
|
|
+/* Program to load an ELF binary on a linux system, and run it.
|
|
+ References to symbols in sharable libraries can be resolved by either
|
|
+ an ELF sharable library or a linux style of shared library. */
|
|
+
|
|
+/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
|
|
+ I ever taken any courses on internals. This program was developed using
|
|
+ information available through the book "UNIX SYSTEM V RELEASE 4,
|
|
+ Programmers guide: Ansi C and Programming Support Tools", which did
|
|
+ a more than adequate job of explaining everything required to get this
|
|
+ working. */
|
|
+
|
|
+extern int _dl_linux_resolve(void);
|
|
+
|
|
+unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
|
|
+{
|
|
+ int reloc_type;
|
|
+ ELF_RELOC *this_reloc;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ int symtab_index;
|
|
+ char *rel_addr;
|
|
+ char *new_addr;
|
|
+ char **got_addr;
|
|
+ unsigned long instr_addr;
|
|
+ char *symname;
|
|
+
|
|
+ rel_addr = (char *) (tpnt->dynamic_info[DT_JMPREL] + tpnt->loadaddr);
|
|
+
|
|
+ this_reloc = (ELF_RELOC *)(intptr_t)(rel_addr + reloc_entry);
|
|
+ reloc_type = ELF32_R_TYPE(this_reloc->r_info);
|
|
+ symtab_index = ELF32_R_SYM(this_reloc->r_info);
|
|
+
|
|
+ symtab = (Elf32_Sym *)(intptr_t) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+ symname= strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (reloc_type != R_386_JMP_SLOT) {
|
|
+ _dl_dprintf(2, "%s: Incorrect relocation type in jump relocations\n",
|
|
+ _dl_progname);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+
|
|
+ /* Address of jump instruction to fix up */
|
|
+ instr_addr = ((unsigned long) this_reloc->r_offset +
|
|
+ (unsigned long) tpnt->loadaddr);
|
|
+ got_addr = (char **) instr_addr;
|
|
+
|
|
+ /* Get the address of the GOT entry */
|
|
+ new_addr = _dl_find_hash(symname, tpnt->symbol_scope, tpnt, resolver);
|
|
+ if (!new_addr) {
|
|
+ new_addr = _dl_find_hash(symname, NULL, NULL, resolver);
|
|
+ if (new_addr) {
|
|
+ return (unsigned long) new_addr;
|
|
+ }
|
|
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n", _dl_progname, symname);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if ((unsigned long) got_addr < 0x40000000)
|
|
+ {
|
|
+ if (_dl_debug_bindings)
|
|
+ {
|
|
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s", symname);
|
|
+ if(_dl_debug_detail) _dl_dprintf(_dl_debug_file,
|
|
+ "\n\tpatched %x ==> %x @ %x\n", *got_addr, new_addr, got_addr);
|
|
+ }
|
|
+ }
|
|
+ if (!_dl_debug_nofixups) {
|
|
+ *got_addr = new_addr;
|
|
+ }
|
|
+#else
|
|
+ *got_addr = new_addr;
|
|
+#endif
|
|
+
|
|
+ return (unsigned long) new_addr;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ unsigned long rel_addr, unsigned long rel_size,
|
|
+ int (*reloc_fnc) (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab))
|
|
+{
|
|
+ unsigned int i;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *rpnt;
|
|
+ int symtab_index;
|
|
+
|
|
+ /* Now parse the relocation information */
|
|
+ rpnt = (ELF_RELOC *)(intptr_t) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size = rel_size / sizeof(ELF_RELOC);
|
|
+
|
|
+ symtab = (Elf32_Sym *)(intptr_t) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++) {
|
|
+ int res;
|
|
+
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+
|
|
+ /* When the dynamic linker bootstrapped itself, it resolved some symbols.
|
|
+ Make sure we do not do them again */
|
|
+ if (!symtab_index && tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+ if (symtab_index && tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ debug_sym(symtab,strtab,symtab_index);
|
|
+ debug_reloc(symtab,strtab,rpnt);
|
|
+#endif
|
|
+
|
|
+ res = reloc_fnc (tpnt, scope, rpnt, symtab, strtab);
|
|
+
|
|
+ if (res==0) continue;
|
|
+
|
|
+ _dl_dprintf(2, "\n%s: ",_dl_progname);
|
|
+
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "symbol '%s': ", strtab + symtab[symtab_index].st_name);
|
|
+
|
|
+ if (res <0)
|
|
+ {
|
|
+ int reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "can't handle reloc type %s\n ", _dl_reltypes(reloc_type));
|
|
+#else
|
|
+ _dl_dprintf(2, "can't handle reloc type %x\n", reloc_type);
|
|
+#endif
|
|
+ _dl_exit(-res);
|
|
+ }
|
|
+ else if (res >0)
|
|
+ {
|
|
+ _dl_dprintf(2, "can't resolve symbol\n");
|
|
+ return res;
|
|
+ }
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
+static int
|
|
+_dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ char *symname;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (symtab_index) {
|
|
+
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope,
|
|
+ (reloc_type == R_386_JMP_SLOT ? tpnt : NULL), symbolrel);
|
|
+
|
|
+ /*
|
|
+ * We want to allow undefined references to weak symbols - this might
|
|
+ * have been intentional. We should not be linking local symbols
|
|
+ * here, so all bases should be covered.
|
|
+ */
|
|
+
|
|
+ if (!symbol_addr && ELF32_ST_BIND(symtab[symtab_index].st_info) == STB_GLOBAL) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "\tglobal symbol '%s' already defined in '%s'\n",
|
|
+ symname, tpnt->libname);
|
|
+#endif
|
|
+ return 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+ switch (reloc_type) {
|
|
+ case R_386_NONE:
|
|
+ break;
|
|
+ case R_386_32:
|
|
+ *reloc_addr += symbol_addr;
|
|
+ break;
|
|
+ case R_386_PC32:
|
|
+ *reloc_addr += symbol_addr - (unsigned long) reloc_addr;
|
|
+ break;
|
|
+ case R_386_GLOB_DAT:
|
|
+ case R_386_JMP_SLOT:
|
|
+ *reloc_addr = symbol_addr;
|
|
+ break;
|
|
+ case R_386_RELATIVE:
|
|
+ *reloc_addr += (unsigned long) tpnt->loadaddr;
|
|
+ break;
|
|
+ case R_386_COPY:
|
|
+ /* handled later on */
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /*call _dl_exit(1) */
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_lazy_reloc (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ unsigned long *reloc_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+ (void)scope;
|
|
+ (void)symtab;
|
|
+ (void)strtab;
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+ switch (reloc_type) {
|
|
+ case R_386_NONE:
|
|
+ break;
|
|
+ case R_386_JMP_SLOT:
|
|
+ *reloc_addr += (unsigned long) tpnt->loadaddr;
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /*call _dl_exit(1) */
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+ return 0;
|
|
+
|
|
+}
|
|
+
|
|
+/* This is done as a separate step, because there are cases where
|
|
+ information is first copied and later initialized. This results in
|
|
+ the wrong information being copied. Someone at Sun was complaining about
|
|
+ a bug in the handling of _COPY by SVr4, and this may in fact be what he
|
|
+ was talking about. Sigh. */
|
|
+
|
|
+/* No, there are cases where the SVr4 linker fails to emit COPY relocs
|
|
+ at all */
|
|
+static int
|
|
+_dl_do_copy (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+ int goof = 0;
|
|
+ char *symname;
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ if (reloc_type != R_386_COPY)
|
|
+ return 0;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (symtab_index) {
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope, NULL, copyrel);
|
|
+ if (!symbol_addr) goof++;
|
|
+ }
|
|
+ if (!goof) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_move)
|
|
+ _dl_dprintf(_dl_debug_file,"\n%s move %x bytes from %x to %x",
|
|
+ symname, symtab[symtab_index].st_size,
|
|
+ symbol_addr, symtab[symtab_index].st_value);
|
|
+#endif
|
|
+ _dl_memcpy((char *) symtab[symtab_index].st_value,
|
|
+ (char *) symbol_addr, symtab[symtab_index].st_size);
|
|
+ }
|
|
+
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ (void)_dl_parse(tpnt, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ return _dl_parse(tpnt, tpnt->symbol_scope, rel_addr, rel_size, _dl_do_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_copy_information(struct dyn_elf *xpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ return _dl_parse(xpnt->dyn, xpnt->next, rel_addr, rel_size, _dl_do_copy);
|
|
+}
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/i386/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/i386/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/i386/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/i386/ld_syscalls.h 2002-08-09 07:20:21.000000000 -0500
|
|
@@ -0,0 +1,7 @@
|
|
+/* Define the __set_errno macro as nothing so that INLINE_SYSCALL
|
|
+ * won't set errno, which is important since we make system calls
|
|
+ * before the errno symbol is dynamicly linked. */
|
|
+
|
|
+#define __set_errno(X) {(void)(X);}
|
|
+#include "sys/syscall.h"
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/i386/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/i386/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/i386/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/i386/ld_sysdep.h 2002-05-28 16:33:32.000000000 -0500
|
|
@@ -0,0 +1,81 @@
|
|
+/*
|
|
+ * Various assmbly language/system dependent hacks that are required
|
|
+ * so that we can minimize the amount of platform specific code.
|
|
+ */
|
|
+
|
|
+/*
|
|
+ * Define this if the system uses RELOCA.
|
|
+ */
|
|
+#undef ELF_USES_RELOCA
|
|
+
|
|
+/*
|
|
+ * Get a pointer to the argv array. On many platforms this can be just
|
|
+ * the address if the first argument, on other platforms we need to
|
|
+ * do something a little more subtle here.
|
|
+ */
|
|
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long*) & ARGS)
|
|
+
|
|
+/*
|
|
+ * Initialization sequence for a GOT.
|
|
+ */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) \
|
|
+{ \
|
|
+ GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
|
|
+ GOT_BASE[1] = (unsigned long) MODULE; \
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform a relocation. This is only used when
|
|
+ * bootstrapping the dynamic loader. RELP is the relocation that we
|
|
+ * are performing, REL is the pointer to the address we are relocating.
|
|
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
|
|
+ * load address.
|
|
+ */
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
|
|
+ switch(ELF32_R_TYPE((RELP)->r_info)){ \
|
|
+ case R_386_32: \
|
|
+ *REL += SYMBOL; \
|
|
+ break; \
|
|
+ case R_386_PC32: \
|
|
+ *REL += SYMBOL - (unsigned long) REL; \
|
|
+ break; \
|
|
+ case R_386_GLOB_DAT: \
|
|
+ case R_386_JMP_SLOT: \
|
|
+ *REL = SYMBOL; \
|
|
+ break; \
|
|
+ case R_386_RELATIVE: \
|
|
+ *REL += (unsigned long) LOAD; \
|
|
+ break; \
|
|
+ default: \
|
|
+ _dl_exit(1); \
|
|
+ }
|
|
+
|
|
+
|
|
+/*
|
|
+ * Transfer control to the user's application, once the dynamic loader
|
|
+ * is done. This routine has to exit the current function, then
|
|
+ * call the _dl_elf_main function.
|
|
+ */
|
|
+#define START() \
|
|
+ __asm__ volatile ("leave\n\t" \
|
|
+ "jmp *%%eax\n\t" \
|
|
+ : "=a" (status) : "a" (_dl_elf_main))
|
|
+
|
|
+
|
|
+
|
|
+/* Here we define the magic numbers that this dynamic loader should accept */
|
|
+
|
|
+#define MAGIC1 EM_386
|
|
+#undef MAGIC2
|
|
+/* Used for error messages */
|
|
+#define ELF_TARGET "386"
|
|
+
|
|
+struct elf_resolve;
|
|
+extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
|
|
+
|
|
+#define do_rem(result, n, base) result = (n % base)
|
|
+
|
|
+/* 4096 bytes alignment */
|
|
+#define PAGE_ALIGN 0xfffff000
|
|
+#define ADDR_ALIGN 0xfff
|
|
+#define OFFS_ALIGN 0x7ffff000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/i386/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/i386/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/i386/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/i386/resolve.S 2001-06-14 16:51:51.000000000 -0500
|
|
@@ -0,0 +1,52 @@
|
|
+/*
|
|
+ * This function is _not_ called directly. It is jumped to (so no return
|
|
+ * address is on the stack) when attempting to use a symbol that has not yet
|
|
+ * been resolved. The first time a jump symbol (such as a function call inside
|
|
+ * a shared library) is used (before it gets resolved) it will jump here to
|
|
+ * _dl_linux_resolve. When we get called the stack looks like this:
|
|
+ * reloc_entry
|
|
+ * tpnt
|
|
+ *
|
|
+ * This function saves all the registers, puts a copy of reloc_entry and tpnt
|
|
+ * on the stack (as function arguments) then make the function call
|
|
+ * _dl_linux_resolver(tpnt, reloc_entry). _dl_linux_resolver() figures out
|
|
+ * where the jump symbol is _really_ supposed to have jumped to and returns
|
|
+ * that to us. Once we have that, we overwrite tpnt with this fixed up
|
|
+ * address. We then clean up after ourselves, put all the registers back how we
|
|
+ * found them, then we jump to where the fixed up address, which is where the
|
|
+ * jump symbol that got us here really wanted to jump to in the first place.
|
|
+ * found them, then we jump to the fixed up address, which is where the jump
|
|
+ * symbol that got us here really wanted to jump to in the first place.
|
|
+ * -Erik Andersen
|
|
+ */
|
|
+
|
|
+.text
|
|
+.align 4
|
|
+
|
|
+.globl _dl_linux_resolve
|
|
+.type _dl_linux_resolve,@function
|
|
+
|
|
+_dl_linux_resolve:
|
|
+ pusha /* preserve all regs */
|
|
+ lea 0x20(%esp),%eax /* eax = tpnt and reloc_entry params */
|
|
+ pushl 4(%eax) /* push copy of reloc_entry param */
|
|
+ pushl (%eax) /* push copy of tpnt param */
|
|
+
|
|
+#ifdef __PIC__
|
|
+ call .L24
|
|
+.L24:
|
|
+ popl %ebx
|
|
+ addl $_GLOBAL_OFFSET_TABLE_+[.-.L24],%ebx
|
|
+ movl _dl_linux_resolver@GOT(%ebx),%ebx /* eax = resolved func */
|
|
+ call *%ebx
|
|
+#else
|
|
+ call _dl_linux_resolver
|
|
+#endif
|
|
+ movl %eax,0x28(%esp) /* store func addr over original
|
|
+ * tpnt param */
|
|
+ addl $0x8,%esp /* remove copy parameters */
|
|
+ popa /* restore regs */
|
|
+ ret $4 /* jump to func removing original
|
|
+ * reloc_entry param from stack */
|
|
+.LFE2:
|
|
+ .size _dl_linux_resolve,.LFE2-_dl_linux_resolve
|
|
diff -urN uClibc/ldso-0.9.24/ldso/ldso.c uClibc.ldso.24/ldso-0.9.24/ldso/ldso.c
|
|
--- uClibc/ldso-0.9.24/ldso/ldso.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/ldso.c 2003-12-05 14:24:26.000000000 -0600
|
|
@@ -0,0 +1,1296 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* Program to load an ELF binary on a linux system, and run it
|
|
+ * after resolving ELF shared library symbols
|
|
+ *
|
|
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
|
|
+ * David Engel, Hongjiu Lu and Mitch D'Souza
|
|
+ * Copyright (C) 2001-2002, Erik Andersen
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+// Support a list of library preloads in /etc/ld.so.preload
|
|
+//#define SUPPORT_LDSO_PRELOAD_FILE
|
|
+
|
|
+
|
|
+/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
|
|
+ I ever taken any courses on internals. This program was developed using
|
|
+ information available through the book "UNIX SYSTEM V RELEASE 4,
|
|
+ Programmers guide: Ansi C and Programming Support Tools", which did
|
|
+ a more than adequate job of explaining everything required to get this
|
|
+ working. */
|
|
+
|
|
+/*
|
|
+ * The main trick with this program is that initially, we ourselves are
|
|
+ * not dynamicly linked. This means that we cannot access any global
|
|
+ * variables or call any functions. No globals initially, since the
|
|
+ * Global Offset Table (GOT) is initialized by the linker assuming a
|
|
+ * virtual address of 0, and no function calls initially since the
|
|
+ * Procedure Linkage Table (PLT) is not yet initialized.
|
|
+ *
|
|
+ * There are additional initial restrictions - we cannot use large
|
|
+ * switch statements, since the compiler generates tables of addresses
|
|
+ * and jumps through them. We can use inline functions, because these
|
|
+ * do not transfer control to a new address, but they must be static so
|
|
+ * that they are not exported from the modules. We cannot use normal
|
|
+ * syscall stubs, because these all reference the errno global variable
|
|
+ * which is not yet initialized. We can use all of the local stack
|
|
+ * variables that we want.
|
|
+ *
|
|
+ * Life is further complicated by the fact that initially we do not
|
|
+ * want to do a complete dynamic linking. We want to allow the user to
|
|
+ * supply new functions to override symbols (i.e. weak symbols and/or
|
|
+ * LD_PRELOAD). So initially, we only perform relocations for
|
|
+ * variables that start with "_dl_" since ANSI specifies that the user
|
|
+ * is not supposed to redefine any of these variables.
|
|
+ *
|
|
+ * Fortunately, the linker itself leaves a few clues lying around, and
|
|
+ * when the kernel starts the image, there are a few further clues.
|
|
+ * First of all, there is Auxiliary Vector Table information sitting on
|
|
+ * which is provided to us by the kernel, and which includes
|
|
+ * information about the load address that the program interpreter was
|
|
+ * loaded at, the number of sections, the address the application was
|
|
+ * loaded at and so forth. Here this information is stored in the
|
|
+ * array auxvt. For details see linux/fs/binfmt_elf.c where it calls
|
|
+ * NEW_AUX_ENT() a bunch of time....
|
|
+ *
|
|
+ * Next, we need to find the GOT. On most arches there is a register
|
|
+ * pointing to the GOT, but just in case (and for new ports) I've added
|
|
+ * some (slow) C code to locate the GOT for you.
|
|
+ *
|
|
+ * This code was originally written for SVr4, and there the kernel
|
|
+ * would load all text pages R/O, so they needed to call mprotect a
|
|
+ * zillion times to mark all text pages as writable so dynamic linking
|
|
+ * would succeed. Then when they were done, they would change the
|
|
+ * protections for all the pages back again. Well, under Linux
|
|
+ * everything is loaded writable (since Linux does copy on write
|
|
+ * anyways) so all the mprotect stuff has been disabled.
|
|
+ *
|
|
+ * Initially, we do not have access to _dl_malloc since we can't yet
|
|
+ * make function calls, so we mmap one page to use as scratch space.
|
|
+ * Later on, when we can call _dl_malloc we reuse this this memory.
|
|
+ * This is also beneficial, since we do not want to use the same memory
|
|
+ * pool as malloc anyway - esp if the user redefines malloc to do
|
|
+ * something funky.
|
|
+ *
|
|
+ * Our first task is to perform a minimal linking so that we can call
|
|
+ * other portions of the dynamic linker. Once we have done this, we
|
|
+ * then build the list of modules that the application requires, using
|
|
+ * LD_LIBRARY_PATH if this is not a suid program (/usr/lib otherwise).
|
|
+ * Once this is done, we can do the dynamic linking as required, and we
|
|
+ * must omit the things we did to get the dynamic linker up and running
|
|
+ * in the first place. After we have done this, we just have a few
|
|
+ * housekeeping chores and we can transfer control to the user's
|
|
+ * application.
|
|
+ */
|
|
+
|
|
+#include "ldso.h"
|
|
+
|
|
+
|
|
+#define ALLOW_ZERO_PLTGOT
|
|
+
|
|
+/* Some arches may need to override this in boot1_arch.h */
|
|
+#define ELFMAGIC ELFMAG
|
|
+
|
|
+/* This is a poor man's malloc, used prior to resolving our internal poor man's malloc */
|
|
+#define LD_MALLOC(SIZE) ((void *) (malloc_buffer += SIZE, malloc_buffer - SIZE)) ; REALIGN();
|
|
+/*
|
|
+ * Make sure that the malloc buffer is aligned on 4 byte boundary. For 64 bit
|
|
+ * platforms we may need to increase this to 8, but this is good enough for
|
|
+ * now. This is typically called after LD_MALLOC.
|
|
+ */
|
|
+#define REALIGN() malloc_buffer = (char *) (((unsigned long) malloc_buffer + 3) & ~(3))
|
|
+
|
|
+char *_dl_library_path = 0; /* Where we look for libraries */
|
|
+char *_dl_preload = 0; /* Things to be loaded before the libs. */
|
|
+char *_dl_ldsopath = 0;
|
|
+static int _dl_be_lazy = RTLD_LAZY;
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+char *_dl_debug = 0;
|
|
+char *_dl_debug_symbols = 0;
|
|
+char *_dl_debug_move = 0;
|
|
+char *_dl_debug_reloc = 0;
|
|
+char *_dl_debug_detail = 0;
|
|
+char *_dl_debug_nofixups = 0;
|
|
+char *_dl_debug_bindings = 0;
|
|
+int _dl_debug_file = 2;
|
|
+#else
|
|
+#define _dl_debug_file 2
|
|
+#endif
|
|
+static char *_dl_malloc_addr, *_dl_mmap_zero;
|
|
+
|
|
+static char *_dl_trace_loaded_objects = 0;
|
|
+static int (*_dl_elf_main) (int, char **, char **);
|
|
+struct r_debug *_dl_debug_addr = NULL;
|
|
+unsigned long *_dl_brkp;
|
|
+unsigned long *_dl_envp;
|
|
+int _dl_fixup(struct elf_resolve *tpnt, int lazy);
|
|
+void _dl_debug_state(void);
|
|
+char *_dl_get_last_path_component(char *path);
|
|
+static void _dl_get_ready_to_run(struct elf_resolve *tpnt, struct elf_resolve *app_tpnt,
|
|
+ unsigned long load_addr, unsigned long *hash_addr, Elf32_auxv_t auxvt[AT_EGID + 1],
|
|
+ char **envp, struct r_debug *debug_addr);
|
|
+
|
|
+#include "boot1_arch.h"
|
|
+#include "_dl_progname.h" /* Pull in the value of _dl_progname */
|
|
+
|
|
+/* When we enter this piece of code, the program stack looks like this:
|
|
+ argc argument counter (integer)
|
|
+ argv[0] program name (pointer)
|
|
+ argv[1...N] program args (pointers)
|
|
+ argv[argc-1] end of args (integer)
|
|
+ NULL
|
|
+ env[0...N] environment variables (pointers)
|
|
+ NULL
|
|
+ auxvt[0...N] Auxiliary Vector Table elements (mixed types)
|
|
+*/
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+/* Debugging is especially tricky on PowerPC, since string literals
|
|
+ * require relocations. Thus, you can't use _dl_dprintf() for
|
|
+ * anything until the bootstrap relocations are finished. */
|
|
+static inline void hexprint(unsigned long x)
|
|
+{
|
|
+ int i;
|
|
+ char c;
|
|
+
|
|
+ for (i = 0; i < 8; i++) {
|
|
+ c = ((x >> 28) + '0');
|
|
+ if (c > '9')
|
|
+ c += 'a' - '9' - 1;
|
|
+ _dl_write(1, &c, 1);
|
|
+ x <<= 4;
|
|
+ }
|
|
+ c = '\n';
|
|
+ _dl_write(1, &c, 1);
|
|
+}
|
|
+#endif
|
|
+
|
|
+LD_BOOT(unsigned long args) __attribute__ ((unused));
|
|
+
|
|
+LD_BOOT(unsigned long args)
|
|
+{
|
|
+ unsigned int argc;
|
|
+ char **argv, **envp;
|
|
+ unsigned long load_addr;
|
|
+ unsigned long *got;
|
|
+ unsigned long *aux_dat;
|
|
+ int goof = 0;
|
|
+ ElfW(Ehdr) *header;
|
|
+ struct elf_resolve *tpnt;
|
|
+ struct elf_resolve *app_tpnt;
|
|
+ Elf32_auxv_t auxvt[AT_EGID + 1];
|
|
+ unsigned char *malloc_buffer, *mmap_zero;
|
|
+ Elf32_Dyn *dpnt;
|
|
+ unsigned long *hash_addr;
|
|
+ struct r_debug *debug_addr = NULL;
|
|
+ int indx;
|
|
+ int status;
|
|
+
|
|
+
|
|
+ /* WARNING! -- we cannot make _any_ funtion calls until we have
|
|
+ * taken care of fixing up our own relocations. Making static
|
|
+ * inline calls is ok, but _no_ function calls. Not yet
|
|
+ * anyways. */
|
|
+
|
|
+ /* First obtain the information on the stack that tells us more about
|
|
+ what binary is loaded, where it is loaded, etc, etc */
|
|
+ GET_ARGV(aux_dat, args);
|
|
+#if defined (__arm__) || defined (__mips__) || defined (__cris__)
|
|
+ aux_dat += 1;
|
|
+#endif
|
|
+ argc = *(aux_dat - 1);
|
|
+ argv = (char **) aux_dat;
|
|
+ aux_dat += argc; /* Skip over the argv pointers */
|
|
+ aux_dat++; /* Skip over NULL at end of argv */
|
|
+ envp = (char **) aux_dat;
|
|
+ while (*aux_dat)
|
|
+ aux_dat++; /* Skip over the envp pointers */
|
|
+ aux_dat++; /* Skip over NULL at end of envp */
|
|
+
|
|
+ /* Place -1 here as a checkpoint. We later check if it was changed
|
|
+ * when we read in the auxvt */
|
|
+ auxvt[AT_UID].a_type = -1;
|
|
+
|
|
+ /* The junk on the stack immediately following the environment is
|
|
+ * the Auxiliary Vector Table. Read out the elements of the auxvt,
|
|
+ * sort and store them in auxvt for later use. */
|
|
+ while (*aux_dat) {
|
|
+ Elf32_auxv_t *auxv_entry = (Elf32_auxv_t *) aux_dat;
|
|
+
|
|
+ if (auxv_entry->a_type <= AT_EGID) {
|
|
+ _dl_memcpy(&(auxvt[auxv_entry->a_type]), auxv_entry, sizeof(Elf32_auxv_t));
|
|
+ }
|
|
+ aux_dat += 2;
|
|
+ }
|
|
+
|
|
+ /* locate the ELF header. We need this done as soon as possible
|
|
+ * (esp since SEND_STDERR() needs this on some platforms... */
|
|
+ load_addr = auxvt[AT_BASE].a_un.a_val;
|
|
+ header = (ElfW(Ehdr) *) auxvt[AT_BASE].a_un.a_ptr;
|
|
+
|
|
+ /* Check the ELF header to make sure everything looks ok. */
|
|
+ if (!header || header->e_ident[EI_CLASS] != ELFCLASS32 ||
|
|
+ header->e_ident[EI_VERSION] != EV_CURRENT
|
|
+#if !defined(__powerpc__) && !defined(__mips__) && !defined(__sh__)
|
|
+ || _dl_strncmp((void *) header, ELFMAGIC, SELFMAG) != 0
|
|
+#else
|
|
+ || header->e_ident[EI_MAG0] != ELFMAG0
|
|
+ || header->e_ident[EI_MAG1] != ELFMAG1
|
|
+ || header->e_ident[EI_MAG2] != ELFMAG2
|
|
+ || header->e_ident[EI_MAG3] != ELFMAG3
|
|
+#endif
|
|
+ ) {
|
|
+ SEND_STDERR("Invalid ELF header\n");
|
|
+ _dl_exit(0);
|
|
+ }
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("ELF header=");
|
|
+ SEND_ADDRESS_STDERR(load_addr, 1);
|
|
+#endif
|
|
+
|
|
+
|
|
+ /* Locate the global offset table. Since this code must be PIC
|
|
+ * we can take advantage of the magic offset register, if we
|
|
+ * happen to know what that is for this architecture. If not,
|
|
+ * we can always read stuff out of the ELF file to find it... */
|
|
+#if defined(__i386__)
|
|
+ __asm__("\tmovl %%ebx,%0\n\t":"=a"(got));
|
|
+#elif defined(__m68k__)
|
|
+ __asm__("movel %%a5,%0":"=g"(got))
|
|
+#elif defined(__sparc__)
|
|
+ __asm__("\tmov %%l7,%0\n\t":"=r"(got))
|
|
+#elif defined(__arm__)
|
|
+ __asm__("\tmov %0, r10\n\t":"=r"(got));
|
|
+#elif defined(__powerpc__)
|
|
+ __asm__("\tbl _GLOBAL_OFFSET_TABLE_-4@local\n\t":"=l"(got));
|
|
+#elif defined(__mips__)
|
|
+ __asm__("\tmove %0, $28\n\tsubu %0,%0,0x7ff0\n\t":"=r"(got));
|
|
+#elif defined(__sh__)
|
|
+ __asm__(
|
|
+" mov.l 1f, %0\n"
|
|
+" mova 1f, r0\n"
|
|
+" bra 2f\n"
|
|
+" add r0, %0\n"
|
|
+" .balign 4\n"
|
|
+"1: .long _GLOBAL_OFFSET_TABLE_\n"
|
|
+"2:" : "=r" (got) : : "r0");
|
|
+#elif defined(__cris__)
|
|
+ __asm__("\tmove.d $pc,%0\n\tsub.d .:GOTOFF,%0\n\t":"=r"(got));
|
|
+#else
|
|
+ /* Do things the slow way in C */
|
|
+ {
|
|
+ unsigned long tx_reloc;
|
|
+ Elf32_Dyn *dynamic = NULL;
|
|
+ Elf32_Shdr *shdr;
|
|
+ Elf32_Phdr *pt_load;
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("Finding the GOT using C code to read the ELF file\n");
|
|
+#endif
|
|
+ /* Find where the dynamic linking information section is hiding */
|
|
+ shdr = (Elf32_Shdr *) (header->e_shoff + (char *) header);
|
|
+ for (indx = header->e_shnum; --indx >= 0; ++shdr) {
|
|
+ if (shdr->sh_type == SHT_DYNAMIC) {
|
|
+ goto found_dynamic;
|
|
+ }
|
|
+ }
|
|
+ SEND_STDERR("missing dynamic linking information section \n");
|
|
+ _dl_exit(0);
|
|
+
|
|
+ found_dynamic:
|
|
+ dynamic = (Elf32_Dyn *) (shdr->sh_offset + (char *) header);
|
|
+
|
|
+ /* Find where PT_LOAD is hiding */
|
|
+ pt_load = (Elf32_Phdr *) (header->e_phoff + (char *) header);
|
|
+ for (indx = header->e_phnum; --indx >= 0; ++pt_load) {
|
|
+ if (pt_load->p_type == PT_LOAD) {
|
|
+ goto found_pt_load;
|
|
+ }
|
|
+ }
|
|
+ SEND_STDERR("missing loadable program segment\n");
|
|
+ _dl_exit(0);
|
|
+
|
|
+ found_pt_load:
|
|
+ /* Now (finally) find where DT_PLTGOT is hiding */
|
|
+ tx_reloc = pt_load->p_vaddr - pt_load->p_offset;
|
|
+ for (; DT_NULL != dynamic->d_tag; ++dynamic) {
|
|
+ if (dynamic->d_tag == DT_PLTGOT) {
|
|
+ goto found_got;
|
|
+ }
|
|
+ }
|
|
+ SEND_STDERR("missing global offset table\n");
|
|
+ _dl_exit(0);
|
|
+
|
|
+ found_got:
|
|
+ got = (unsigned long *) (dynamic->d_un.d_val - tx_reloc +
|
|
+ (char *) header);
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ /* Now, finally, fix up the location of the dynamic stuff */
|
|
+ dpnt = (Elf32_Dyn *) (*got + load_addr);
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("First Dynamic section entry=");
|
|
+ SEND_ADDRESS_STDERR(dpnt, 1);
|
|
+#endif
|
|
+
|
|
+
|
|
+ /* Call mmap to get a page of writable memory that can be used
|
|
+ * for _dl_malloc throughout the shared lib loader. */
|
|
+ mmap_zero = malloc_buffer = _dl_mmap((void *) 0, 4096,
|
|
+ PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
|
|
+ if (_dl_mmap_check_error(mmap_zero)) {
|
|
+ SEND_STDERR("dl_boot: mmap of a spare page failed!\n");
|
|
+ _dl_exit(13);
|
|
+ }
|
|
+
|
|
+ tpnt = LD_MALLOC(sizeof(struct elf_resolve));
|
|
+ _dl_memset(tpnt, 0, sizeof(struct elf_resolve));
|
|
+ app_tpnt = LD_MALLOC(sizeof(struct elf_resolve));
|
|
+ _dl_memset(app_tpnt, 0, sizeof(struct elf_resolve));
|
|
+
|
|
+ /*
|
|
+ * This is used by gdb to locate the chain of shared libraries that are currently loaded.
|
|
+ */
|
|
+ debug_addr = LD_MALLOC(sizeof(struct r_debug));
|
|
+ _dl_memset(debug_addr, 0, sizeof(struct r_debug));
|
|
+
|
|
+ /* OK, that was easy. Next scan the DYNAMIC section of the image.
|
|
+ We are only doing ourself right now - we will have to do the rest later */
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("scanning DYNAMIC section\n");
|
|
+#endif
|
|
+ while (dpnt->d_tag) {
|
|
+#if defined(__mips__)
|
|
+ if (dpnt->d_tag == DT_MIPS_GOTSYM)
|
|
+ tpnt->mips_gotsym = (unsigned long) dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_MIPS_LOCAL_GOTNO)
|
|
+ tpnt->mips_local_gotno = (unsigned long) dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_MIPS_SYMTABNO)
|
|
+ tpnt->mips_symtabno = (unsigned long) dpnt->d_un.d_val;
|
|
+#endif
|
|
+ if (dpnt->d_tag < 24) {
|
|
+ tpnt->dynamic_info[dpnt->d_tag] = dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_TEXTREL) {
|
|
+ tpnt->dynamic_info[DT_TEXTREL] = 1;
|
|
+ }
|
|
+ }
|
|
+ dpnt++;
|
|
+ }
|
|
+
|
|
+ {
|
|
+ ElfW(Phdr) *ppnt;
|
|
+ int i;
|
|
+
|
|
+ ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_ptr;
|
|
+ for (i = 0; i < auxvt[AT_PHNUM].a_un.a_val; i++, ppnt++)
|
|
+ if (ppnt->p_type == PT_DYNAMIC) {
|
|
+ dpnt = (Elf32_Dyn *) ppnt->p_vaddr;
|
|
+ while (dpnt->d_tag) {
|
|
+#if defined(__mips__)
|
|
+ if (dpnt->d_tag == DT_MIPS_GOTSYM)
|
|
+ app_tpnt->mips_gotsym =
|
|
+ (unsigned long) dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_MIPS_LOCAL_GOTNO)
|
|
+ app_tpnt->mips_local_gotno =
|
|
+ (unsigned long) dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_MIPS_SYMTABNO)
|
|
+ app_tpnt->mips_symtabno =
|
|
+ (unsigned long) dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag > DT_JMPREL) {
|
|
+ dpnt++;
|
|
+ continue;
|
|
+ }
|
|
+ app_tpnt->dynamic_info[dpnt->d_tag] = dpnt->d_un.d_val;
|
|
+
|
|
+#warning "Debugging threads on mips won't work till someone fixes this..."
|
|
+#if 0
|
|
+ if (dpnt->d_tag == DT_DEBUG) {
|
|
+ dpnt->d_un.d_val = (unsigned long) debug_addr;
|
|
+ }
|
|
+#endif
|
|
+
|
|
+#else
|
|
+ if (dpnt->d_tag > DT_JMPREL) {
|
|
+ dpnt++;
|
|
+ continue;
|
|
+ }
|
|
+ app_tpnt->dynamic_info[dpnt->d_tag] = dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_DEBUG) {
|
|
+ dpnt->d_un.d_val = (unsigned long) debug_addr;
|
|
+ }
|
|
+#endif
|
|
+ if (dpnt->d_tag == DT_TEXTREL)
|
|
+ app_tpnt->dynamic_info[DT_TEXTREL] = 1;
|
|
+ dpnt++;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("done scanning DYNAMIC section\n");
|
|
+#endif
|
|
+
|
|
+ /* Get some more of the information that we will need to dynamicly link
|
|
+ this module to itself */
|
|
+
|
|
+ hash_addr = (unsigned long *) (tpnt->dynamic_info[DT_HASH] + load_addr);
|
|
+ tpnt->nbucket = *hash_addr++;
|
|
+ tpnt->nchain = *hash_addr++;
|
|
+ tpnt->elf_buckets = hash_addr;
|
|
+ hash_addr += tpnt->nbucket;
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("done grabbing link information\n");
|
|
+#endif
|
|
+
|
|
+#ifndef FORCE_SHAREABLE_TEXT_SEGMENTS
|
|
+ /* Ugly, ugly. We need to call mprotect to change the protection of
|
|
+ the text pages so that we can do the dynamic linking. We can set the
|
|
+ protection back again once we are done */
|
|
+
|
|
+ {
|
|
+ ElfW(Phdr) *ppnt;
|
|
+ int i;
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("calling mprotect on the shared library/dynamic linker\n");
|
|
+#endif
|
|
+
|
|
+ /* First cover the shared library/dynamic linker. */
|
|
+ if (tpnt->dynamic_info[DT_TEXTREL]) {
|
|
+ header = (ElfW(Ehdr) *) auxvt[AT_BASE].a_un.a_ptr;
|
|
+ ppnt = (ElfW(Phdr) *) ((int)auxvt[AT_BASE].a_un.a_ptr +
|
|
+ header->e_phoff);
|
|
+ for (i = 0; i < header->e_phnum; i++, ppnt++) {
|
|
+ if (ppnt->p_type == PT_LOAD && !(ppnt->p_flags & PF_W)) {
|
|
+ _dl_mprotect((void *) (load_addr + (ppnt->p_vaddr & PAGE_ALIGN)),
|
|
+ (ppnt->p_vaddr & ADDR_ALIGN) + (unsigned long) ppnt->p_filesz,
|
|
+ PROT_READ | PROT_WRITE | PROT_EXEC);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("calling mprotect on the application program\n");
|
|
+#endif
|
|
+ /* Now cover the application program. */
|
|
+ if (app_tpnt->dynamic_info[DT_TEXTREL]) {
|
|
+ ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_ptr;
|
|
+ for (i = 0; i < auxvt[AT_PHNUM].a_un.a_val; i++, ppnt++) {
|
|
+ if (ppnt->p_type == PT_LOAD && !(ppnt->p_flags & PF_W))
|
|
+ _dl_mprotect((void *) (ppnt->p_vaddr & PAGE_ALIGN),
|
|
+ (ppnt->p_vaddr & ADDR_ALIGN) +
|
|
+ (unsigned long) ppnt->p_filesz,
|
|
+ PROT_READ | PROT_WRITE | PROT_EXEC);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+#endif
|
|
+
|
|
+#if defined(__mips__)
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("About to do MIPS specific GOT bootstrap\n");
|
|
+#endif
|
|
+ /* For MIPS we have to do stuff to the GOT before we do relocations. */
|
|
+ PERFORM_BOOTSTRAP_GOT(got);
|
|
+#endif
|
|
+
|
|
+ /* OK, now do the relocations. We do not do a lazy binding here, so
|
|
+ that once we are done, we have considerably more flexibility. */
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("About to do library loader relocations\n");
|
|
+#endif
|
|
+
|
|
+ goof = 0;
|
|
+ for (indx = 0; indx < 2; indx++) {
|
|
+ unsigned int i;
|
|
+ ELF_RELOC *rpnt;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+ int symtab_index;
|
|
+ unsigned long rel_addr, rel_size;
|
|
+
|
|
+
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ rel_addr = (indx ? tpnt->dynamic_info[DT_JMPREL] : tpnt->
|
|
+ dynamic_info[DT_RELA]);
|
|
+ rel_size = (indx ? tpnt->dynamic_info[DT_PLTRELSZ] : tpnt->
|
|
+ dynamic_info[DT_RELASZ]);
|
|
+#else
|
|
+ rel_addr = (indx ? tpnt->dynamic_info[DT_JMPREL] : tpnt->
|
|
+ dynamic_info[DT_REL]);
|
|
+ rel_size = (indx ? tpnt->dynamic_info[DT_PLTRELSZ] : tpnt->
|
|
+ dynamic_info[DT_RELSZ]);
|
|
+#endif
|
|
+
|
|
+ if (!rel_addr)
|
|
+ continue;
|
|
+
|
|
+ /* Now parse the relocation information */
|
|
+ rpnt = (ELF_RELOC *) (rel_addr + load_addr);
|
|
+ for (i = 0; i < rel_size; i += sizeof(ELF_RELOC), rpnt++) {
|
|
+ reloc_addr = (unsigned long *) (load_addr + (unsigned long) rpnt->r_offset);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ if (symtab_index) {
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + load_addr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + load_addr);
|
|
+
|
|
+ /* We only do a partial dynamic linking right now. The user
|
|
+ is not supposed to redefine any symbols that start with
|
|
+ a '_', so we can do this with confidence. */
|
|
+ if (!_dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+ symbol_addr = load_addr + symtab[symtab_index].st_value;
|
|
+
|
|
+ if (!symbol_addr) {
|
|
+ /* This will segfault - you cannot call a function until
|
|
+ * we have finished the relocations.
|
|
+ */
|
|
+ SEND_STDERR("ELF dynamic loader - unable to self-bootstrap - symbol ");
|
|
+ SEND_STDERR(strtab + symtab[symtab_index].st_name);
|
|
+ SEND_STDERR(" undefined.\n");
|
|
+ goof++;
|
|
+ }
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ SEND_STDERR("About to fixup symbol: ");
|
|
+ SEND_STDERR(strtab + symtab[symtab_index].st_name);
|
|
+ SEND_STDERR("\n");
|
|
+#endif
|
|
+ }
|
|
+ /*
|
|
+ * Use this machine-specific macro to perform the actual relocation.
|
|
+ */
|
|
+ PERFORM_BOOTSTRAP_RELOC(rpnt, reloc_addr, symbol_addr, load_addr);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (goof) {
|
|
+ _dl_exit(14);
|
|
+ }
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ /* Wahoo!!! */
|
|
+ _dl_dprintf(_dl_debug_file, "Done relocating library loader, so we can now\n\tuse globals and make function calls!\n");
|
|
+#endif
|
|
+
|
|
+ if (argv[0]) {
|
|
+ _dl_progname = argv[0];
|
|
+ }
|
|
+
|
|
+ /* Start to build the tables of the modules that are required for
|
|
+ * this beast to run. We start with the basic executable, and then
|
|
+ * go from there. Eventually we will run across ourself, and we
|
|
+ * will need to properly deal with that as well. */
|
|
+
|
|
+ /* Make it so _dl_malloc can use the page of memory we have already
|
|
+ * allocated, so we shouldn't need to grab any more memory */
|
|
+ _dl_malloc_addr = malloc_buffer;
|
|
+ _dl_mmap_zero = mmap_zero;
|
|
+
|
|
+
|
|
+
|
|
+ /* Now we have done the mandatory linking of some things. We are now
|
|
+ free to start using global variables, since these things have all been
|
|
+ fixed up by now. Still no function calls outside of this library ,
|
|
+ since the dynamic resolver is not yet ready. */
|
|
+ _dl_get_ready_to_run(tpnt, app_tpnt, load_addr, hash_addr, auxvt, envp, debug_addr);
|
|
+
|
|
+
|
|
+ /* Notify the debugger that all objects are now mapped in. */
|
|
+ _dl_debug_addr->r_state = RT_CONSISTENT;
|
|
+ _dl_debug_state();
|
|
+
|
|
+
|
|
+ /* OK we are done here. Turn out the lights, and lock up. */
|
|
+ _dl_elf_main = (int (*)(int, char **, char **)) auxvt[AT_ENTRY].a_un.a_fcn;
|
|
+
|
|
+ /*
|
|
+ * Transfer control to the application.
|
|
+ */
|
|
+ status = 0; /* Used on x86, but not on other arches */
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file,"\ntransfering control: %s\n\n", _dl_progname);
|
|
+#endif
|
|
+ START();
|
|
+}
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static void debug_fini (int status, void *arg)
|
|
+{
|
|
+ (void)status;
|
|
+ _dl_dprintf(_dl_debug_file,"\ncalling fini: %s\n\n", (const char*)arg);
|
|
+}
|
|
+#endif
|
|
+
|
|
+static void _dl_get_ready_to_run(struct elf_resolve *tpnt, struct elf_resolve *app_tpnt,
|
|
+ unsigned long load_addr, unsigned long *hash_addr, Elf32_auxv_t auxvt[AT_EGID + 1],
|
|
+ char **envp, struct r_debug *debug_addr)
|
|
+{
|
|
+ ElfW(Phdr) *ppnt;
|
|
+ char *lpntstr;
|
|
+ int i, _dl_secure, goof = 0;
|
|
+ struct dyn_elf *rpnt;
|
|
+ struct elf_resolve *tcurr;
|
|
+ struct elf_resolve *tpnt1;
|
|
+ unsigned long brk_addr, *lpnt;
|
|
+ int (*_dl_atexit) (void *);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ int (*_dl_on_exit) (void (*FUNCTION)(int STATUS, void *ARG),void*);
|
|
+#endif
|
|
+
|
|
+ /* Now we have done the mandatory linking of some things. We are now
|
|
+ free to start using global variables, since these things have all been
|
|
+ fixed up by now. Still no function calls outside of this library ,
|
|
+ since the dynamic resolver is not yet ready. */
|
|
+ lpnt = (unsigned long *) (tpnt->dynamic_info[DT_PLTGOT] + load_addr);
|
|
+
|
|
+ tpnt->chains = hash_addr;
|
|
+ tpnt->next = 0;
|
|
+ tpnt->libname = 0;
|
|
+ tpnt->libtype = program_interpreter;
|
|
+ tpnt->loadaddr = (ElfW(Addr)) load_addr;
|
|
+
|
|
+#ifdef ALLOW_ZERO_PLTGOT
|
|
+ if (tpnt->dynamic_info[DT_PLTGOT])
|
|
+#endif
|
|
+ {
|
|
+ INIT_GOT(lpnt, tpnt);
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "GOT found at %x\n", lpnt);
|
|
+#endif
|
|
+ }
|
|
+
|
|
+ /* OK, this was a big step, now we need to scan all of the user images
|
|
+ and load them properly. */
|
|
+
|
|
+ {
|
|
+ ElfW(Ehdr) *epnt;
|
|
+ ElfW(Phdr) *myppnt;
|
|
+ int j;
|
|
+
|
|
+ epnt = (ElfW(Ehdr) *) auxvt[AT_BASE].a_un.a_ptr;
|
|
+ tpnt->n_phent = epnt->e_phnum;
|
|
+ tpnt->ppnt = myppnt = (ElfW(Phdr) *) (load_addr + epnt->e_phoff);
|
|
+ for (j = 0; j < epnt->e_phnum; j++, myppnt++) {
|
|
+ if (myppnt->p_type == PT_DYNAMIC) {
|
|
+ tpnt->dynamic_addr = (ElfW(Dyn) *)myppnt->p_vaddr + load_addr;
|
|
+ tpnt->dynamic_size = myppnt->p_filesz;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ brk_addr = 0;
|
|
+ rpnt = NULL;
|
|
+
|
|
+ /* At this point we are now free to examine the user application,
|
|
+ and figure out which libraries are supposed to be called. Until
|
|
+ we have this list, we will not be completely ready for dynamic linking */
|
|
+
|
|
+ ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_ptr;
|
|
+ for (i = 0; i < auxvt[AT_PHNUM].a_un.a_val; i++, ppnt++) {
|
|
+ if (ppnt->p_type == PT_LOAD) {
|
|
+ if (ppnt->p_vaddr + ppnt->p_memsz > brk_addr)
|
|
+ brk_addr = ppnt->p_vaddr + ppnt->p_memsz;
|
|
+ }
|
|
+ if (ppnt->p_type == PT_DYNAMIC) {
|
|
+#ifndef ALLOW_ZERO_PLTGOT
|
|
+ /* make sure it's really there. */
|
|
+ if (app_tpnt->dynamic_info[DT_PLTGOT] == 0)
|
|
+ continue;
|
|
+#endif
|
|
+ /* OK, we have what we need - slip this one into the list. */
|
|
+ app_tpnt = _dl_add_elf_hash_table("", 0,
|
|
+ app_tpnt->dynamic_info, ppnt->p_vaddr, ppnt->p_filesz);
|
|
+ _dl_loaded_modules->libtype = elf_executable;
|
|
+ _dl_loaded_modules->ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_ptr;
|
|
+ _dl_loaded_modules->n_phent = auxvt[AT_PHNUM].a_un.a_val;
|
|
+ _dl_symbol_tables = rpnt = (struct dyn_elf *) _dl_malloc(sizeof(struct dyn_elf));
|
|
+ _dl_memset(rpnt, 0, sizeof(struct dyn_elf));
|
|
+ rpnt->dyn = _dl_loaded_modules;
|
|
+ app_tpnt->usage_count++;
|
|
+ app_tpnt->symbol_scope = _dl_symbol_tables;
|
|
+ lpnt = (unsigned long *) (app_tpnt->dynamic_info[DT_PLTGOT]);
|
|
+#ifdef ALLOW_ZERO_PLTGOT
|
|
+ if (lpnt)
|
|
+#endif
|
|
+ INIT_GOT(lpnt, _dl_loaded_modules);
|
|
+ }
|
|
+
|
|
+ /* OK, fill this in - we did not have this before */
|
|
+ if (ppnt->p_type == PT_INTERP) {
|
|
+ int readsize = 0;
|
|
+ char *pnt, *pnt1, buf[1024];
|
|
+ tpnt->libname = _dl_strdup((char *) ppnt->p_offset +
|
|
+ (auxvt[AT_PHDR].a_un.a_val & PAGE_ALIGN));
|
|
+
|
|
+ /* Determine if the shared lib loader is a symlink */
|
|
+ _dl_memset(buf, 0, sizeof(buf));
|
|
+ readsize = _dl_readlink(tpnt->libname, buf, sizeof(buf));
|
|
+ if (readsize > 0 && readsize < (int)(sizeof(buf)-1)) {
|
|
+ pnt1 = _dl_strrchr(buf, '/');
|
|
+ if (pnt1 && buf != pnt1) {
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "changing tpnt->libname from '%s' to '%s'\n", tpnt->libname, buf);
|
|
+#endif
|
|
+ tpnt->libname = _dl_strdup(buf);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ /* Store the path where the shared lib loader was found for
|
|
+ * later use */
|
|
+ pnt = _dl_strdup(tpnt->libname);
|
|
+ pnt1 = _dl_strrchr(pnt, '/');
|
|
+ if (pnt != pnt1) {
|
|
+ *pnt1 = '\0';
|
|
+ _dl_ldsopath = pnt;
|
|
+ } else {
|
|
+ _dl_ldsopath = tpnt->libname;
|
|
+ }
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "Lib Loader:\t(%x) %s\n", tpnt->loadaddr, tpnt->libname);
|
|
+#endif
|
|
+ }
|
|
+ }
|
|
+
|
|
+
|
|
+ /* Now we need to figure out what kind of options are selected.
|
|
+ Note that for SUID programs we ignore the settings in LD_LIBRARY_PATH */
|
|
+ {
|
|
+ if (_dl_getenv("LD_BIND_NOW", envp))
|
|
+ _dl_be_lazy = 0;
|
|
+
|
|
+ if ((auxvt[AT_UID].a_un.a_val == -1 && _dl_suid_ok()) ||
|
|
+ (auxvt[AT_UID].a_un.a_val != -1 &&
|
|
+ auxvt[AT_UID].a_un.a_val == auxvt[AT_EUID].a_un.a_val
|
|
+ && auxvt[AT_GID].a_un.a_val== auxvt[AT_EGID].a_un.a_val)) {
|
|
+ _dl_secure = 0;
|
|
+ _dl_preload = _dl_getenv("LD_PRELOAD", envp);
|
|
+ _dl_library_path = _dl_getenv("LD_LIBRARY_PATH", envp);
|
|
+ } else {
|
|
+ _dl_secure = 1;
|
|
+ _dl_preload = _dl_getenv("LD_PRELOAD", envp);
|
|
+ _dl_unsetenv("LD_AOUT_PRELOAD", envp);
|
|
+ _dl_unsetenv("LD_LIBRARY_PATH", envp);
|
|
+ _dl_unsetenv("LD_AOUT_LIBRARY_PATH", envp);
|
|
+ _dl_library_path = NULL;
|
|
+ }
|
|
+ }
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ _dl_debug = _dl_getenv("LD_DEBUG", envp);
|
|
+ if (_dl_debug)
|
|
+ {
|
|
+ if (_dl_strstr(_dl_debug, "all")) {
|
|
+ _dl_debug_detail = _dl_debug_move = _dl_debug_symbols
|
|
+ = _dl_debug_reloc = _dl_debug_bindings = _dl_debug_nofixups = _dl_strstr(_dl_debug, "all");
|
|
+ }
|
|
+ else {
|
|
+ _dl_debug_detail = _dl_strstr(_dl_debug, "detail");
|
|
+ _dl_debug_move = _dl_strstr(_dl_debug, "move");
|
|
+ _dl_debug_symbols = _dl_strstr(_dl_debug, "sym");
|
|
+ _dl_debug_reloc = _dl_strstr(_dl_debug, "reloc");
|
|
+ _dl_debug_nofixups = _dl_strstr(_dl_debug, "nofix");
|
|
+ _dl_debug_bindings = _dl_strstr(_dl_debug, "bind");
|
|
+ }
|
|
+ }
|
|
+ {
|
|
+ const char *dl_debug_output;
|
|
+
|
|
+ dl_debug_output = _dl_getenv("LD_DEBUG_OUTPUT", envp);
|
|
+
|
|
+ if (dl_debug_output)
|
|
+ {
|
|
+ char tmp[22], *tmp1, *filename;
|
|
+ int len1, len2;
|
|
+
|
|
+ _dl_memset(tmp, 0, sizeof(tmp));
|
|
+ tmp1=_dl_simple_ltoa( tmp, (unsigned long)_dl_getpid());
|
|
+
|
|
+ len1 = _dl_strlen(dl_debug_output);
|
|
+ len2 = _dl_strlen(tmp1);
|
|
+
|
|
+ filename = _dl_malloc(len1+len2+2);
|
|
+
|
|
+ if (filename)
|
|
+ {
|
|
+ _dl_strcpy (filename, dl_debug_output);
|
|
+ filename[len1] = '.';
|
|
+ _dl_strcpy (&filename[len1+1], tmp1);
|
|
+
|
|
+ _dl_debug_file= _dl_open (filename, O_WRONLY|O_CREAT);
|
|
+ if (_dl_debug_file<0)
|
|
+ {
|
|
+ _dl_debug_file = 2;
|
|
+ _dl_dprintf (2, "can't open file: '%s'\n",filename);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+
|
|
+#endif
|
|
+ _dl_trace_loaded_objects = _dl_getenv("LD_TRACE_LOADED_OBJECTS", envp);
|
|
+#ifndef __LDSO_LDD_SUPPORT__
|
|
+ if (_dl_trace_loaded_objects) {
|
|
+ _dl_dprintf(_dl_debug_file, "Use the ldd provided by uClibc\n");
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ /*
|
|
+ * OK, fix one more thing - set up debug_addr so it will point
|
|
+ * to our chain. Later we may need to fill in more fields, but this
|
|
+ * should be enough for now.
|
|
+ */
|
|
+ debug_addr->r_map = (struct link_map *) _dl_loaded_modules;
|
|
+ debug_addr->r_version = 1;
|
|
+ debug_addr->r_ldbase = load_addr;
|
|
+ debug_addr->r_brk = (unsigned long) &_dl_debug_state;
|
|
+ _dl_debug_addr = debug_addr;
|
|
+
|
|
+ /* Notify the debugger we are in a consistant state */
|
|
+ _dl_debug_addr->r_state = RT_CONSISTENT;
|
|
+ _dl_debug_state();
|
|
+
|
|
+ /* OK, we now have the application in the list, and we have some
|
|
+ basic stuff in place. Now search through the list for other shared
|
|
+ libraries that should be loaded, and insert them on the list in the
|
|
+ correct order. */
|
|
+
|
|
+ _dl_map_cache();
|
|
+
|
|
+
|
|
+ if (_dl_preload)
|
|
+ {
|
|
+ char c, *str, *str2;
|
|
+
|
|
+ str = _dl_preload;
|
|
+ while (*str == ':' || *str == ' ' || *str == '\t')
|
|
+ str++;
|
|
+ while (*str)
|
|
+ {
|
|
+ str2 = str;
|
|
+ while (*str2 && *str2 != ':' && *str2 != ' ' && *str2 != '\t')
|
|
+ str2++;
|
|
+ c = *str2;
|
|
+ *str2 = '\0';
|
|
+ if (!_dl_secure || _dl_strchr(str, '/') == NULL)
|
|
+ {
|
|
+ if ((tpnt1 = _dl_check_if_named_library_is_loaded(str)))
|
|
+ {
|
|
+ continue;
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tfile='%s'; needed by '%s'\n",
|
|
+ str, _dl_progname);
|
|
+#endif
|
|
+ tpnt1 = _dl_load_shared_library(_dl_secure, &rpnt, NULL, str);
|
|
+ if (!tpnt1) {
|
|
+#ifdef __LDSO_LDD_SUPPORT__
|
|
+ if (_dl_trace_loaded_objects)
|
|
+ _dl_dprintf(1, "\t%s => not found\n", str);
|
|
+ else
|
|
+#endif
|
|
+ {
|
|
+ _dl_dprintf(2, "%s: can't load " "library '%s'\n", _dl_progname, str);
|
|
+ _dl_exit(15);
|
|
+ }
|
|
+ } else {
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "Loading:\t(%x) %s\n", tpnt1->loadaddr, tpnt1->libname);
|
|
+#endif
|
|
+#ifdef __LDSO_LDD_SUPPORT__
|
|
+ if (_dl_trace_loaded_objects && tpnt1->usage_count==1) {
|
|
+ /* this is a real hack to make ldd not print
|
|
+ * the library itself when run on a library. */
|
|
+ if (_dl_strcmp(_dl_progname, str) != 0)
|
|
+ _dl_dprintf(1, "\t%s => %s (%x)\n", str, tpnt1->libname,
|
|
+ (unsigned) tpnt1->loadaddr);
|
|
+ }
|
|
+#endif
|
|
+ }
|
|
+ }
|
|
+ *str2 = c;
|
|
+ str = str2;
|
|
+ while (*str == ':' || *str == ' ' || *str == '\t')
|
|
+ str++;
|
|
+ }
|
|
+ }
|
|
+
|
|
+#ifdef SUPPORT_LDSO_PRELOAD_FILE
|
|
+ {
|
|
+ int fd;
|
|
+ struct stat st;
|
|
+ char *preload;
|
|
+ if (!_dl_stat(LDSO_PRELOAD, &st) && st.st_size > 0) {
|
|
+ if ((fd = _dl_open(LDSO_PRELOAD, O_RDONLY)) < 0) {
|
|
+ _dl_dprintf(2, "%s: can't open file '%s'\n",
|
|
+ _dl_progname, LDSO_PRELOAD);
|
|
+ } else {
|
|
+ preload = (caddr_t) _dl_mmap(0, st.st_size + 1,
|
|
+ PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
|
|
+ _dl_close(fd);
|
|
+ if (preload == (caddr_t) - 1) {
|
|
+ _dl_dprintf(2, "%s: can't map file '%s'\n",
|
|
+ _dl_progname, LDSO_PRELOAD);
|
|
+ } else {
|
|
+ char c, *cp, *cp2;
|
|
+
|
|
+ /* convert all separators and comments to spaces */
|
|
+ for (cp = preload; *cp; /*nada */ ) {
|
|
+ if (*cp == ':' || *cp == '\t' || *cp == '\n') {
|
|
+ *cp++ = ' ';
|
|
+ } else if (*cp == '#') {
|
|
+ do
|
|
+ *cp++ = ' ';
|
|
+ while (*cp != '\n' && *cp != '\0');
|
|
+ } else {
|
|
+ cp++;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ /* find start of first library */
|
|
+ for (cp = preload; *cp && *cp == ' '; cp++)
|
|
+ /*nada */ ;
|
|
+
|
|
+ while (*cp) {
|
|
+ /* find end of library */
|
|
+ for (cp2 = cp; *cp && *cp != ' '; cp++)
|
|
+ /*nada */ ;
|
|
+ c = *cp;
|
|
+ *cp = '\0';
|
|
+
|
|
+ if ((tpnt1 = _dl_check_if_named_library_is_loaded(cp2)))
|
|
+ {
|
|
+ continue;
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tfile='%s'; needed by '%s'\n",
|
|
+ cp2, _dl_progname);
|
|
+#endif
|
|
+ tpnt1 = _dl_load_shared_library(0, &rpnt, NULL, cp2);
|
|
+ if (!tpnt1) {
|
|
+#ifdef __LDSO_LDD_SUPPORT__
|
|
+ if (_dl_trace_loaded_objects)
|
|
+ _dl_dprintf(1, "\t%s => not found\n", cp2);
|
|
+ else
|
|
+#endif
|
|
+ {
|
|
+ _dl_dprintf(2, "%s: can't load library '%s'\n", _dl_progname, cp2);
|
|
+ _dl_exit(15);
|
|
+ }
|
|
+ } else {
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "Loading:\t(%x) %s\n", tpnt1->loadaddr, tpnt1->libname);
|
|
+#endif
|
|
+#ifdef __LDSO_LDD_SUPPORT__
|
|
+ if (_dl_trace_loaded_objects && tpnt1->usage_count==1) {
|
|
+ _dl_dprintf(1, "\t%s => %s (%x)\n", cp2,
|
|
+ tpnt1->libname, (unsigned) tpnt1->loadaddr);
|
|
+ }
|
|
+#endif
|
|
+ }
|
|
+
|
|
+ /* find start of next library */
|
|
+ *cp = c;
|
|
+ for ( /*nada */ ; *cp && *cp == ' '; cp++)
|
|
+ /*nada */ ;
|
|
+ }
|
|
+
|
|
+ _dl_munmap(preload, st.st_size + 1);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ for (tcurr = _dl_loaded_modules; tcurr; tcurr = tcurr->next)
|
|
+ {
|
|
+ Elf32_Dyn *dpnt;
|
|
+ for (dpnt = (Elf32_Dyn *) tcurr->dynamic_addr; dpnt->d_tag; dpnt++)
|
|
+ {
|
|
+ if (dpnt->d_tag == DT_NEEDED)
|
|
+ {
|
|
+ char *name;
|
|
+ lpntstr = (char*) (tcurr->loadaddr + tcurr->dynamic_info[DT_STRTAB] + dpnt->d_un.d_val);
|
|
+ name = _dl_get_last_path_component(lpntstr);
|
|
+
|
|
+ if ((tpnt1 = _dl_check_if_named_library_is_loaded(name)))
|
|
+ {
|
|
+ continue;
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tfile='%s'; needed by '%s'\n",
|
|
+ lpntstr, _dl_progname);
|
|
+#endif
|
|
+ if (!(tpnt1 = _dl_load_shared_library(0, &rpnt, tcurr, lpntstr)))
|
|
+ {
|
|
+#ifdef __LDSO_LDD_SUPPORT__
|
|
+ if (_dl_trace_loaded_objects) {
|
|
+ _dl_dprintf(1, "\t%s => not found\n", lpntstr);
|
|
+ continue;
|
|
+ } else
|
|
+#endif
|
|
+ {
|
|
+ _dl_dprintf(2, "%s: can't load library '%s'\n", _dl_progname, lpntstr);
|
|
+ _dl_exit(16);
|
|
+ }
|
|
+ } else {
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "Loading:\t(%x) %s\n", tpnt1->loadaddr, tpnt1->libname);
|
|
+#endif
|
|
+#ifdef __LDSO_LDD_SUPPORT__
|
|
+ if (_dl_trace_loaded_objects && tpnt1->usage_count==1) {
|
|
+ _dl_dprintf(1, "\t%s => %s (%x)\n", lpntstr, tpnt1->libname,
|
|
+ (unsigned) tpnt1->loadaddr);
|
|
+ }
|
|
+#endif
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+
|
|
+ _dl_unmap_cache();
|
|
+
|
|
+ /*
|
|
+ * If the program interpreter is not in the module chain, add it. This will
|
|
+ * be required for dlopen to be able to access the internal functions in the
|
|
+ * dynamic linker.
|
|
+ */
|
|
+ if (tpnt) {
|
|
+ tcurr = _dl_loaded_modules;
|
|
+ if (tcurr)
|
|
+ while (tcurr->next)
|
|
+ tcurr = tcurr->next;
|
|
+ tpnt->next = NULL;
|
|
+ tpnt->usage_count++;
|
|
+
|
|
+ if (tcurr) {
|
|
+ tcurr->next = tpnt;
|
|
+ tpnt->prev = tcurr;
|
|
+ } else {
|
|
+ _dl_loaded_modules = tpnt;
|
|
+ tpnt->prev = NULL;
|
|
+ }
|
|
+ if (rpnt) {
|
|
+ rpnt->next = (struct dyn_elf *) _dl_malloc(sizeof(struct dyn_elf));
|
|
+ _dl_memset(rpnt->next, 0, sizeof(struct dyn_elf));
|
|
+ rpnt->next->prev = rpnt;
|
|
+ rpnt = rpnt->next;
|
|
+ } else {
|
|
+ rpnt = (struct dyn_elf *) _dl_malloc(sizeof(struct dyn_elf));
|
|
+ _dl_memset(rpnt, 0, sizeof(struct dyn_elf));
|
|
+ }
|
|
+ rpnt->dyn = tpnt;
|
|
+ tpnt = NULL;
|
|
+ }
|
|
+
|
|
+#ifdef __LDSO_LDD_SUPPORT__
|
|
+ /* End of the line for ldd.... */
|
|
+ if (_dl_trace_loaded_objects) {
|
|
+ _dl_dprintf(1, "\t%s => %s (%x)\n", rpnt->dyn->libname + (_dl_strlen(_dl_ldsopath)) + 1,
|
|
+ rpnt->dyn->libname, rpnt->dyn->loadaddr);
|
|
+ _dl_exit(0);
|
|
+ }
|
|
+#endif
|
|
+
|
|
+
|
|
+#ifdef __mips__
|
|
+ /*
|
|
+ * Relocation of the GOT entries for MIPS have to be done
|
|
+ * after all the libraries have been loaded.
|
|
+ */
|
|
+ _dl_perform_mips_global_got_relocations(_dl_loaded_modules);
|
|
+#endif
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "Beginning relocation fixups\n");
|
|
+#endif
|
|
+ /*
|
|
+ * OK, now all of the kids are tucked into bed in their proper addresses.
|
|
+ * Now we go through and look for REL and RELA records that indicate fixups
|
|
+ * to the GOT tables. We need to do this in reverse order so that COPY
|
|
+ * directives work correctly */
|
|
+ goof = _dl_loaded_modules ? _dl_fixup(_dl_loaded_modules, _dl_be_lazy) : 0;
|
|
+
|
|
+
|
|
+ /* Some flavors of SVr4 do not generate the R_*_COPY directive,
|
|
+ and we have to manually search for entries that require fixups.
|
|
+ Solaris gets this one right, from what I understand. */
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(_dl_debug_file, "Beginning copy fixups\n");
|
|
+#endif
|
|
+ if (_dl_symbol_tables)
|
|
+ goof += _dl_copy_fixups(_dl_symbol_tables);
|
|
+
|
|
+ /* OK, at this point things are pretty much ready to run. Now we
|
|
+ need to touch up a few items that are required, and then
|
|
+ we can let the user application have at it. Note that
|
|
+ the dynamic linker itself is not guaranteed to be fully
|
|
+ dynamicly linked if we are using ld.so.1, so we have to look
|
|
+ up each symbol individually. */
|
|
+
|
|
+
|
|
+ _dl_brkp = (unsigned long *) (intptr_t) _dl_find_hash("___brk_addr", NULL, NULL, symbolrel);
|
|
+
|
|
+ if (_dl_brkp) {
|
|
+ *_dl_brkp = brk_addr;
|
|
+ }
|
|
+ _dl_envp = (unsigned long *) (intptr_t) _dl_find_hash("__environ", NULL, NULL, symbolrel);
|
|
+
|
|
+ if (_dl_envp) {
|
|
+ *_dl_envp = (unsigned long) envp;
|
|
+ }
|
|
+
|
|
+#ifndef FORCE_SHAREABLE_TEXT_SEGMENTS
|
|
+ {
|
|
+ unsigned int j;
|
|
+ ElfW(Phdr) *myppnt;
|
|
+
|
|
+ /* We had to set the protections of all pages to R/W for dynamic linking.
|
|
+ Set text pages back to R/O */
|
|
+ for (tpnt = _dl_loaded_modules; tpnt; tpnt = tpnt->next) {
|
|
+ for (myppnt = tpnt->ppnt, j = 0; j < tpnt->n_phent; j++, myppnt++) {
|
|
+ if (myppnt->p_type == PT_LOAD && !(myppnt->p_flags & PF_W) && tpnt->dynamic_info[DT_TEXTREL]) {
|
|
+ _dl_mprotect((void *) (tpnt->loadaddr + (myppnt->p_vaddr & PAGE_ALIGN)),
|
|
+ (myppnt->p_vaddr & ADDR_ALIGN) + (unsigned long) myppnt->p_filesz, LXFLAGS(myppnt->p_flags));
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ }
|
|
+#endif
|
|
+ _dl_atexit = (int (*)(void *)) (intptr_t) _dl_find_hash("atexit", NULL, NULL, symbolrel);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_on_exit = (int (*)(void (*)(int, void *),void*))
|
|
+ (intptr_t) _dl_find_hash("on_exit", NULL, NULL, symbolrel);
|
|
+#endif
|
|
+
|
|
+ /* Notify the debugger we have added some objects. */
|
|
+ _dl_debug_addr->r_state = RT_ADD;
|
|
+ _dl_debug_state();
|
|
+
|
|
+ for (rpnt = _dl_symbol_tables; rpnt!=NULL&& rpnt->next!=NULL; rpnt=rpnt->next)
|
|
+ ;
|
|
+
|
|
+ for (;rpnt!=NULL; rpnt=rpnt->prev)
|
|
+ {
|
|
+ tpnt = rpnt->dyn;
|
|
+
|
|
+ if (tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+
|
|
+ /* Apparently crt0/1 for the application is responsible for handling this.
|
|
+ * We only need to run the init/fini for shared libraries
|
|
+ */
|
|
+ if (tpnt->libtype == elf_executable)
|
|
+ break; /* at this point all shared libs are initialized !! */
|
|
+
|
|
+ if (tpnt->init_flag & INIT_FUNCS_CALLED)
|
|
+ continue;
|
|
+ tpnt->init_flag |= INIT_FUNCS_CALLED;
|
|
+
|
|
+ if (tpnt->dynamic_info[DT_INIT]) {
|
|
+ void (*dl_elf_func) (void);
|
|
+ dl_elf_func = (void (*)(void)) (intptr_t) (tpnt->loadaddr + tpnt->dynamic_info[DT_INIT]);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file,"\ncalling init: %s\n\n", tpnt->libname);
|
|
+#endif
|
|
+ (*dl_elf_func) ();
|
|
+ }
|
|
+ if (_dl_atexit && tpnt->dynamic_info[DT_FINI]) {
|
|
+ void (*dl_elf_func) (void);
|
|
+ dl_elf_func = (void (*)(void)) (intptr_t) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI]);
|
|
+ (*_dl_atexit) (dl_elf_func);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug && _dl_on_exit)
|
|
+ {
|
|
+ (*_dl_on_exit)(debug_fini, tpnt->libname);
|
|
+ }
|
|
+#endif
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ else {
|
|
+ if (!_dl_atexit)
|
|
+ _dl_dprintf(_dl_debug_file, "%s: The address of atexit () is 0x0.\n", tpnt->libname);
|
|
+#if 0
|
|
+ if (!tpnt->dynamic_info[DT_FINI])
|
|
+ _dl_dprintf(_dl_debug_file, "%s: Invalid .fini section.\n", tpnt->libname);
|
|
+#endif
|
|
+ }
|
|
+#endif
|
|
+ }
|
|
+}
|
|
+
|
|
+/*
|
|
+ * This stub function is used by some debuggers. The idea is that they
|
|
+ * can set an internal breakpoint on it, so that we are notified when the
|
|
+ * address mapping is changed in some way.
|
|
+ */
|
|
+void _dl_debug_state(void)
|
|
+{
|
|
+}
|
|
+
|
|
+char *_dl_getenv(const char *symbol, char **envp)
|
|
+{
|
|
+ char *pnt;
|
|
+ const char *pnt1;
|
|
+
|
|
+ while ((pnt = *envp++)) {
|
|
+ pnt1 = symbol;
|
|
+ while (*pnt && *pnt == *pnt1)
|
|
+ pnt1++, pnt++;
|
|
+ if (!*pnt || *pnt != '=' || *pnt1)
|
|
+ continue;
|
|
+ return pnt + 1;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+void _dl_unsetenv(const char *symbol, char **envp)
|
|
+{
|
|
+ char *pnt;
|
|
+ const char *pnt1;
|
|
+ char **newenvp = envp;
|
|
+
|
|
+ for (pnt = *envp; pnt; pnt = *++envp) {
|
|
+ pnt1 = symbol;
|
|
+ while (*pnt && *pnt == *pnt1)
|
|
+ pnt1++, pnt++;
|
|
+ if (!*pnt || *pnt != '=' || *pnt1)
|
|
+ *newenvp++ = *envp;
|
|
+ }
|
|
+ *newenvp++ = *envp;
|
|
+ return;
|
|
+}
|
|
+
|
|
+#include "hash.c"
|
|
+#include "readelflib1.c"
|
|
diff -urN uClibc/ldso-0.9.24/ldso/m68k/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/m68k/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/m68k/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/m68k/boot1_arch.h 2002-08-08 09:35:37.000000000 -0500
|
|
@@ -0,0 +1,7 @@
|
|
+/* Any assmbly language/system dependent hacks needed to setup boot1.c so it
|
|
+ * will work as expected and cope with whatever platform specific wierdness is
|
|
+ * needed for this architecture. See arm/boot1_arch.h for an example of what
|
|
+ * can be done.
|
|
+ */
|
|
+
|
|
+#define LD_BOOT(X) void _dl_boot (X)
|
|
diff -urN uClibc/ldso-0.9.24/ldso/m68k/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/m68k/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/m68k/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/m68k/elfinterp.c 2002-11-05 12:21:04.000000000 -0600
|
|
@@ -0,0 +1,359 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* m68k ELF shared library loader suppport
|
|
+ *
|
|
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
|
|
+ * David Engel, Hongjiu Lu and Mitch D'Souza
|
|
+ * Adapted to ELF/68k by Andreas Schwab.
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char *_dl_reltypes[] =
|
|
+{
|
|
+ "R_68K_NONE",
|
|
+ "R_68K_32", "R_68K_16", "R_68K_8",
|
|
+ "R_68K_PC32", "R_68K_PC16", "R_68K_PC8",
|
|
+ "R_68K_GOT32", "R_68K_GOT16", "R_68K_GOT8",
|
|
+ "R_68K_GOT32O", "R_68K_GOT16O", "R_68K_GOT8O",
|
|
+ "R_68K_PLT32", "R_68K_PLT16", "R_68K_PLT8",
|
|
+ "R_68K_PLT32O", "R_68K_PLT16O", "R_68K_PLT8O",
|
|
+ "R_68K_COPY", "R_68K_GLOB_DAT", "R_68K_JMP_SLOT", "R_68K_RELATIVE",
|
|
+ "R_68K_NUM"
|
|
+};
|
|
+#endif
|
|
+
|
|
+/* Program to load an ELF binary on a linux system, and run it.
|
|
+ References to symbols in sharable libraries can be resolved by either
|
|
+ an ELF sharable library or a linux style of shared library. */
|
|
+
|
|
+/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
|
|
+ I ever taken any courses on internals. This program was developed using
|
|
+ information available through the book "UNIX SYSTEM V RELEASE 4,
|
|
+ Programmers guide: Ansi C and Programming Support Tools", which did
|
|
+ a more than adequate job of explaining everything required to get this
|
|
+ working. */
|
|
+
|
|
+
|
|
+unsigned int _dl_linux_resolver (int dummy1, int dummy2,
|
|
+ struct elf_resolve *tpnt, int reloc_entry)
|
|
+{
|
|
+ int reloc_type;
|
|
+ Elf32_Rela *this_reloc;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ char *rel_addr;
|
|
+ int symtab_index;
|
|
+ char *new_addr;
|
|
+ char **got_addr;
|
|
+ unsigned int instr_addr;
|
|
+
|
|
+ rel_addr = tpnt->loadaddr + tpnt->dynamic_info[DT_JMPREL];
|
|
+ this_reloc = (Elf32_Rela *) (rel_addr + reloc_entry);
|
|
+ reloc_type = ELF32_R_TYPE (this_reloc->r_info);
|
|
+ symtab_index = ELF32_R_SYM (this_reloc->r_info);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB]
|
|
+ + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+
|
|
+ if (reloc_type != R_68K_JMP_SLOT)
|
|
+ {
|
|
+ _dl_dprintf (2, "%s: incorrect relocation type in jump relocations\n",
|
|
+ _dl_progname);
|
|
+ _dl_exit (1);
|
|
+ }
|
|
+
|
|
+ /* Address of jump instruction to fix up. */
|
|
+ instr_addr = (int) this_reloc->r_offset + (int) tpnt->loadaddr;
|
|
+ got_addr = (char **) instr_addr;
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if (_dl_debug_symbols) {
|
|
+ _dl_dprintf (2, "Resolving symbol %s\n", strtab + symtab[symtab_index].st_name);
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ /* Get the address of the GOT entry. */
|
|
+ new_addr = _dl_find_hash (strtab + symtab[symtab_index].st_name,
|
|
+ tpnt->symbol_scope, tpnt, resolver);
|
|
+ if (!new_addr)
|
|
+ {
|
|
+ _dl_dprintf (2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, strtab + symtab[symtab_index].st_name);
|
|
+ _dl_exit (1);
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if ((unsigned long) got_addr < 0x40000000)
|
|
+ {
|
|
+ if (_dl_debug_bindings)
|
|
+ {
|
|
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s",
|
|
+ strtab + symtab[symtab_index].st_name);
|
|
+ if(_dl_debug_detail) _dl_dprintf(_dl_debug_file,
|
|
+ "\tpatch %x ==> %x @ %x", *got_addr, new_addr, got_addr);
|
|
+ }
|
|
+ }
|
|
+ if (!_dl_debug_nofixups) {
|
|
+ *got_addr = new_addr;
|
|
+ }
|
|
+#else
|
|
+ *got_addr = new_addr;
|
|
+#endif
|
|
+
|
|
+ return (unsigned int) new_addr;
|
|
+}
|
|
+
|
|
+void
|
|
+_dl_parse_lazy_relocation_information (struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ int i;
|
|
+ char *strtab;
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ Elf32_Sym *symtab;
|
|
+ Elf32_Rela *rpnt;
|
|
+ unsigned int *reloc_addr;
|
|
+
|
|
+ /* Now parse the relocation information. */
|
|
+ rpnt = (Elf32_Rela *) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size = rel_size / sizeof (Elf32_Rela);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB]
|
|
+ + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++)
|
|
+ {
|
|
+ reloc_addr = (int *) (tpnt->loadaddr + (int) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE (rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM (rpnt->r_info);
|
|
+
|
|
+ /* When the dynamic linker bootstrapped itself, it resolved some symbols.
|
|
+ Make sure we do not do them again. */
|
|
+ if (tpnt->libtype == program_interpreter
|
|
+ && (!symtab_index
|
|
+ || _dl_symbol (strtab + symtab[symtab_index].st_name)))
|
|
+ continue;
|
|
+
|
|
+ switch (reloc_type)
|
|
+ {
|
|
+ case R_68K_NONE:
|
|
+ break;
|
|
+ case R_68K_JMP_SLOT:
|
|
+ *reloc_addr += (unsigned int) tpnt->loadaddr;
|
|
+ break;
|
|
+ default:
|
|
+ _dl_dprintf (2, "%s: (LAZY) can't handle reloc type ", _dl_progname);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf (2, "%s ", _dl_reltypes[reloc_type]);
|
|
+#endif
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf (2, "'%s'", strtab + symtab[symtab_index].st_name);
|
|
+ _dl_dprintf (2, "\n");
|
|
+ _dl_exit (1);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+int
|
|
+_dl_parse_relocation_information (struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ int i;
|
|
+ char *strtab;
|
|
+ int reloc_type;
|
|
+ int goof = 0;
|
|
+ Elf32_Sym *symtab;
|
|
+ Elf32_Rela *rpnt;
|
|
+ unsigned int *reloc_addr;
|
|
+ unsigned int symbol_addr;
|
|
+ int symtab_index;
|
|
+ /* Now parse the relocation information */
|
|
+
|
|
+ rpnt = (Elf32_Rela *) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size = rel_size / sizeof (Elf32_Rela);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB]
|
|
+ + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++)
|
|
+ {
|
|
+ reloc_addr = (int *) (tpnt->loadaddr + (int) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE (rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM (rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+
|
|
+ if (tpnt->libtype == program_interpreter
|
|
+ && (!symtab_index
|
|
+ || _dl_symbol (strtab + symtab[symtab_index].st_name)))
|
|
+ continue;
|
|
+
|
|
+ if (symtab_index)
|
|
+ {
|
|
+ symbol_addr = (unsigned int)
|
|
+ _dl_find_hash (strtab + symtab[symtab_index].st_name,
|
|
+ tpnt->symbol_scope,
|
|
+ reloc_type == R_68K_JMP_SLOT ? tpnt : NULL, symbolrel);
|
|
+
|
|
+ /* We want to allow undefined references to weak symbols -
|
|
+ this might have been intentional. We should not be
|
|
+ linking local symbols here, so all bases should be
|
|
+ covered. */
|
|
+ if (!symbol_addr
|
|
+ && ELF32_ST_BIND (symtab[symtab_index].st_info) == STB_GLOBAL)
|
|
+ {
|
|
+ _dl_dprintf (2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, strtab + symtab[symtab_index].st_name);
|
|
+ goof++;
|
|
+ }
|
|
+ }
|
|
+ switch (reloc_type)
|
|
+ {
|
|
+ case R_68K_NONE:
|
|
+ break;
|
|
+ case R_68K_8:
|
|
+ *(char *) reloc_addr = symbol_addr + rpnt->r_addend;
|
|
+ break;
|
|
+ case R_68K_16:
|
|
+ *(short *) reloc_addr = symbol_addr + rpnt->r_addend;
|
|
+ break;
|
|
+ case R_68K_32:
|
|
+ *reloc_addr = symbol_addr + rpnt->r_addend;
|
|
+ break;
|
|
+ case R_68K_PC8:
|
|
+ *(char *) reloc_addr = (symbol_addr + rpnt->r_addend
|
|
+ - (unsigned int) reloc_addr);
|
|
+ break;
|
|
+ case R_68K_PC16:
|
|
+ *(short *) reloc_addr = (symbol_addr + rpnt->r_addend
|
|
+ - (unsigned int) reloc_addr);
|
|
+ break;
|
|
+ case R_68K_PC32:
|
|
+ *reloc_addr = (symbol_addr + rpnt->r_addend
|
|
+ - (unsigned int) reloc_addr);
|
|
+ break;
|
|
+ case R_68K_GLOB_DAT:
|
|
+ case R_68K_JMP_SLOT:
|
|
+ *reloc_addr = symbol_addr;
|
|
+ break;
|
|
+ case R_68K_RELATIVE:
|
|
+ *reloc_addr = ((unsigned int) tpnt->loadaddr
|
|
+ /* Compatibility kludge. */
|
|
+ + (rpnt->r_addend ? : *reloc_addr));
|
|
+ break;
|
|
+ case R_68K_COPY:
|
|
+#if 0 /* Do this later. */
|
|
+ _dl_dprintf (2, "Doing copy");
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf (2, " for symbol %s",
|
|
+ strtab + symtab[symtab_index].st_name);
|
|
+ _dl_dprintf (2, "\n");
|
|
+ _dl_memcpy ((void *) symtab[symtab_index].st_value,
|
|
+ (void *) symbol_addr,
|
|
+ symtab[symtab_index].st_size);
|
|
+#endif
|
|
+ break;
|
|
+ default:
|
|
+ _dl_dprintf (2, "%s: can't handle reloc type ", _dl_progname);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf (2, "%s ", _dl_reltypes[reloc_type]);
|
|
+#endif
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf (2, "'%s'", strtab + symtab[symtab_index].st_name);
|
|
+ _dl_dprintf (2, "\n");
|
|
+ _dl_exit (1);
|
|
+ }
|
|
+
|
|
+ }
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+/* This is done as a separate step, because there are cases where
|
|
+ information is first copied and later initialized. This results in
|
|
+ the wrong information being copied. Someone at Sun was complaining about
|
|
+ a bug in the handling of _COPY by SVr4, and this may in fact be what he
|
|
+ was talking about. Sigh. */
|
|
+
|
|
+/* No, there are cases where the SVr4 linker fails to emit COPY relocs
|
|
+ at all. */
|
|
+
|
|
+int
|
|
+_dl_parse_copy_information (struct dyn_elf *xpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ int i;
|
|
+ char *strtab;
|
|
+ int reloc_type;
|
|
+ int goof = 0;
|
|
+ Elf32_Sym *symtab;
|
|
+ Elf32_Rela *rpnt;
|
|
+ unsigned int *reloc_addr;
|
|
+ unsigned int symbol_addr;
|
|
+ struct elf_resolve *tpnt;
|
|
+ int symtab_index;
|
|
+ /* Now parse the relocation information */
|
|
+
|
|
+ tpnt = xpnt->dyn;
|
|
+
|
|
+ rpnt = (Elf32_Rela *) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size = rel_size / sizeof (Elf32_Rela);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB]
|
|
+ + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++)
|
|
+ {
|
|
+ reloc_addr = (int *) (tpnt->loadaddr + (int) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE (rpnt->r_info);
|
|
+ if (reloc_type != R_68K_COPY)
|
|
+ continue;
|
|
+ symtab_index = ELF32_R_SYM (rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ if (tpnt->libtype == program_interpreter
|
|
+ && (!symtab_index
|
|
+ || _dl_symbol (strtab + symtab[symtab_index].st_name)))
|
|
+ continue;
|
|
+ if (symtab_index)
|
|
+ {
|
|
+ symbol_addr = (unsigned int)
|
|
+ _dl_find_hash (strtab + symtab[symtab_index].st_name,
|
|
+ xpnt->next, NULL, copyrel);
|
|
+ if (!symbol_addr)
|
|
+ {
|
|
+ _dl_dprintf (2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, strtab + symtab[symtab_index].st_name);
|
|
+ goof++;
|
|
+ }
|
|
+ }
|
|
+ if (!goof)
|
|
+ _dl_memcpy ((void *) symtab[symtab_index].st_value, (void *) symbol_addr,
|
|
+ symtab[symtab_index].st_size);
|
|
+ }
|
|
+ return goof;
|
|
+}
|
|
diff -urN uClibc/ldso-0.9.24/ldso/m68k/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/m68k/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/m68k/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/m68k/ld_syscalls.h 2002-03-19 04:43:32.000000000 -0600
|
|
@@ -0,0 +1,174 @@
|
|
+/*
|
|
+ * This file contains the system call macros and syscall
|
|
+ * numbers used by the shared library loader.
|
|
+ */
|
|
+
|
|
+#define __NR_exit 1
|
|
+#define __NR_read 3
|
|
+#define __NR_write 4
|
|
+#define __NR_open 5
|
|
+#define __NR_close 6
|
|
+#define __NR_getuid 24
|
|
+#define __NR_geteuid 49
|
|
+#define __NR_getgid 47
|
|
+#define __NR_getegid 50
|
|
+#define __NR_readlink 85
|
|
+#define __NR_mmap 90
|
|
+#define __NR_munmap 91
|
|
+#define __NR_stat 106
|
|
+#define __NR_mprotect 125
|
|
+
|
|
+
|
|
+/* Here are the macros which define how this platform makes
|
|
+ * system calls. This particular variant does _not_ set
|
|
+ * errno (note how it is disabled in __syscall_return) since
|
|
+ * these will get called before the errno symbol is dynamicly
|
|
+ * linked. */
|
|
+
|
|
+
|
|
+#define __syscall_return(type, res) \
|
|
+do { \
|
|
+ if ((unsigned long)(res) >= (unsigned long)(-125)) { \
|
|
+ /* avoid using res which is declared to be in register d0; \
|
|
+ errno might expand to a function call and clobber it. */ \
|
|
+ /* int __err = -(res); \
|
|
+ errno = __err; */ \
|
|
+ res = -1; \
|
|
+ } \
|
|
+ return (type) (res); \
|
|
+} while (0)
|
|
+
|
|
+#define _syscall0(type, name) \
|
|
+type name(void) \
|
|
+{ \
|
|
+ long __res; \
|
|
+ __asm__ __volatile__ ("movel %1, %%d0\n\t" \
|
|
+ "trap #0\n\t" \
|
|
+ "movel %%d0, %0" \
|
|
+ : "=g" (__res) \
|
|
+ : "i" (__NR_##name) \
|
|
+ : "cc", "%d0"); \
|
|
+ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
|
|
+ /* errno = -__res; */ \
|
|
+ __res = -1; \
|
|
+ } \
|
|
+ return (type)__res; \
|
|
+}
|
|
+
|
|
+#define _syscall1(type, name, atype, a) \
|
|
+type name(atype a) \
|
|
+{ \
|
|
+ long __res; \
|
|
+ __asm__ __volatile__ ("movel %2, %%d1\n\t" \
|
|
+ "movel %1, %%d0\n\t" \
|
|
+ "trap #0\n\t" \
|
|
+ "movel %%d0, %0" \
|
|
+ : "=g" (__res) \
|
|
+ : "i" (__NR_##name), \
|
|
+ "g" ((long)a) \
|
|
+ : "cc", "%d0", "%d1"); \
|
|
+ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
|
|
+ /* errno = -__res; */ \
|
|
+ __res = -1; \
|
|
+ } \
|
|
+ return (type)__res; \
|
|
+}
|
|
+
|
|
+#define _syscall2(type, name, atype, a, btype, b) \
|
|
+type name(atype a, btype b) \
|
|
+{ \
|
|
+ long __res; \
|
|
+ __asm__ __volatile__ ("movel %3, %%d2\n\t" \
|
|
+ "movel %2, %%d1\n\t" \
|
|
+ "movel %1, %%d0\n\t" \
|
|
+ "trap #0\n\t" \
|
|
+ "movel %%d0, %0" \
|
|
+ : "=g" (__res) \
|
|
+ : "i" (__NR_##name), \
|
|
+ "a" ((long)a), \
|
|
+ "g" ((long)b) \
|
|
+ : "cc", "%d0", "%d1", "%d2"); \
|
|
+ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
|
|
+ /* errno = -__res; */ \
|
|
+ __res = -1; \
|
|
+ } \
|
|
+ return (type)__res; \
|
|
+}
|
|
+
|
|
+#define _syscall3(type, name, atype, a, btype, b, ctype, c) \
|
|
+type name(atype a, btype b, ctype c) \
|
|
+{ \
|
|
+ long __res; \
|
|
+ __asm__ __volatile__ ("movel %4, %%d3\n\t" \
|
|
+ "movel %3, %%d2\n\t" \
|
|
+ "movel %2, %%d1\n\t" \
|
|
+ "movel %1, %%d0\n\t" \
|
|
+ "trap #0\n\t" \
|
|
+ "movel %%d0, %0" \
|
|
+ : "=g" (__res) \
|
|
+ : "i" (__NR_##name), \
|
|
+ "a" ((long)a), \
|
|
+ "a" ((long)b), \
|
|
+ "g" ((long)c) \
|
|
+ : "cc", "%d0", "%d1", "%d2", "%d3"); \
|
|
+ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
|
|
+ /* errno = -__res; */ \
|
|
+ __res = -1; \
|
|
+ } \
|
|
+ return (type)__res; \
|
|
+}
|
|
+
|
|
+#define _syscall4(type, name, atype, a, btype, b, ctype, c, dtype, d) \
|
|
+type name(atype a, btype b, ctype c, dtype d) \
|
|
+{ \
|
|
+ long __res; \
|
|
+ __asm__ __volatile__ ("movel %5, %%d4\n\t" \
|
|
+ "movel %4, %%d3\n\t" \
|
|
+ "movel %3, %%d2\n\t" \
|
|
+ "movel %2, %%d1\n\t" \
|
|
+ "movel %1, %%d0\n\t" \
|
|
+ "trap #0\n\t" \
|
|
+ "movel %%d0, %0" \
|
|
+ : "=g" (__res) \
|
|
+ : "i" (__NR_##name), \
|
|
+ "a" ((long)a), \
|
|
+ "a" ((long)b), \
|
|
+ "a" ((long)c), \
|
|
+ "g" ((long)d) \
|
|
+ : "cc", "%d0", "%d1", "%d2", "%d3", \
|
|
+ "%d4"); \
|
|
+ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
|
|
+ /* errno = -__res; */ \
|
|
+ __res = -1; \
|
|
+ } \
|
|
+ return (type)__res; \
|
|
+}
|
|
+
|
|
+#define _syscall5(type, name, atype, a, btype, b, ctype, c, dtype, d, etype, e)\
|
|
+type name(atype a, btype b, ctype c, dtype d, etype e) \
|
|
+{ \
|
|
+ long __res; \
|
|
+ __asm__ __volatile__ ("movel %6, %%d5\n\t" \
|
|
+ "movel %5, %%d4\n\t" \
|
|
+ "movel %4, %%d3\n\t" \
|
|
+ "movel %3, %%d2\n\t" \
|
|
+ "movel %2, %%d1\n\t" \
|
|
+ "movel %1, %%d0\n\t" \
|
|
+ "trap #0\n\t" \
|
|
+ "movel %%d0, %0" \
|
|
+ : "=g" (__res) \
|
|
+ : "i" (__NR_##name), \
|
|
+ "a" ((long)a), \
|
|
+ "a" ((long)b), \
|
|
+ "a" ((long)c), \
|
|
+ "a" ((long)d), \
|
|
+ "g" ((long)e) \
|
|
+ : "cc", "%d0", "%d1", "%d2", "%d3", \
|
|
+ "%d4", "%d5"); \
|
|
+ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
|
|
+ /* errno = -__res; */ \
|
|
+ __res = -1; \
|
|
+ } \
|
|
+ return (type)__res; \
|
|
+}
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/m68k/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/m68k/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/m68k/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/m68k/ld_sysdep.h 2002-05-28 16:33:34.000000000 -0500
|
|
@@ -0,0 +1,88 @@
|
|
+
|
|
+/* Various assmbly language/system dependent hacks that are required
|
|
+ so that we can minimize the amount of platform specific code. */
|
|
+
|
|
+/* Define this if the system uses RELOCA. */
|
|
+#define ELF_USES_RELOCA
|
|
+
|
|
+/* Get a pointer to the argv array. On many platforms this can be
|
|
+ just the address if the first argument, on other platforms we need
|
|
+ to do something a little more subtle here. */
|
|
+#define GET_ARGV(ARGVP, ARGS) ((ARGVP) = ((unsigned int *) &(ARGS)))
|
|
+
|
|
+/* Initialization sequence for a GOT. */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) \
|
|
+{ \
|
|
+ GOT_BASE[2] = (int) _dl_linux_resolve; \
|
|
+ GOT_BASE[1] = (int) (MODULE); \
|
|
+}
|
|
+
|
|
+/* Here is a macro to perform a relocation. This is only used when
|
|
+ bootstrapping the dynamic loader. RELP is the relocation that we
|
|
+ are performing, REL is the pointer to the address we are
|
|
+ relocating. SYMBOL is the symbol involved in the relocation, and
|
|
+ LOAD is the load address. */
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
|
|
+ switch (ELF32_R_TYPE ((RELP)->r_info)) \
|
|
+ { \
|
|
+ case R_68K_8: \
|
|
+ *(char *) (REL) = (SYMBOL) + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ case R_68K_16: \
|
|
+ *(short *) (REL) = (SYMBOL) + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ case R_68K_32: \
|
|
+ *(REL) = (SYMBOL) + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ case R_68K_PC8: \
|
|
+ *(char *) (REL) = ((SYMBOL) + (RELP)->r_addend \
|
|
+ - (unsigned int) (REL)); \
|
|
+ break; \
|
|
+ case R_68K_PC16: \
|
|
+ *(short *) (REL) = ((SYMBOL) + (RELP)->r_addend \
|
|
+ - (unsigned int) (REL)); \
|
|
+ break; \
|
|
+ case R_68K_PC32: \
|
|
+ *(REL) = ((SYMBOL) + (RELP)->r_addend \
|
|
+ - (unsigned int) (REL)); \
|
|
+ break; \
|
|
+ case R_68K_GLOB_DAT: \
|
|
+ case R_68K_JMP_SLOT: \
|
|
+ *(REL) = (SYMBOL); \
|
|
+ break; \
|
|
+ case R_68K_RELATIVE: /* Compatibility kludge */ \
|
|
+ *(REL) = ((unsigned int) (LOAD) + ((RELP)->r_addend ? : *(REL))); \
|
|
+ break; \
|
|
+ default: \
|
|
+ _dl_exit (1); \
|
|
+ }
|
|
+
|
|
+
|
|
+/* Transfer control to the user's application, once the dynamic loader
|
|
+ is done. */
|
|
+
|
|
+#define START() \
|
|
+ __asm__ volatile ("unlk %%a6\n\t" \
|
|
+ "jmp %0@" \
|
|
+ : : "a" (_dl_elf_main));
|
|
+
|
|
+
|
|
+
|
|
+/* Here we define the magic numbers that this dynamic loader should accept */
|
|
+
|
|
+#define MAGIC1 EM_68K
|
|
+#undef MAGIC2
|
|
+/* Used for error messages */
|
|
+#define ELF_TARGET "m68k"
|
|
+
|
|
+struct elf_resolve;
|
|
+extern unsigned int _dl_linux_resolver (int, int, struct elf_resolve *, int);
|
|
+
|
|
+/* Define this because we do not want to call .udiv in the library.
|
|
+ Not needed for m68k. */
|
|
+#define do_rem(result, n, base) ((result) = (n) % (base))
|
|
+
|
|
+/* 4096 bytes alignment */
|
|
+#define PAGE_ALIGN 0xfffff000
|
|
+#define ADDR_ALIGN 0xfff
|
|
+#define OFFS_ALIGN 0x7ffff000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/m68k/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/m68k/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/m68k/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/m68k/resolve.S 2001-04-27 12:23:26.000000000 -0500
|
|
@@ -0,0 +1,21 @@
|
|
+/*
|
|
+ * These are various helper routines that are needed to run an ELF image.
|
|
+ */
|
|
+
|
|
+.text
|
|
+.even
|
|
+
|
|
+.globl _dl_linux_resolve
|
|
+ .type _dl_linux_resolve,@function
|
|
+_dl_linux_resolve:
|
|
+ moveml %a0/%a1,%sp@-
|
|
+#ifdef __PIC__
|
|
+ bsrl _dl_linux_resolver@PLTPC
|
|
+#else
|
|
+ jbsr _dl_linux_resolver
|
|
+#endif
|
|
+ moveml %sp@+,%a0/%a1
|
|
+ addql #8,%sp
|
|
+ jmp @(%d0)
|
|
+.LFE2:
|
|
+ .size _dl_linux_resolve,.LFE2-_dl_linux_resolve
|
|
diff -urN uClibc/ldso-0.9.24/ldso/mips/README uClibc.ldso.24/ldso-0.9.24/ldso/mips/README
|
|
--- uClibc/ldso-0.9.24/ldso/mips/README 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/mips/README 2002-07-25 16:15:59.000000000 -0500
|
|
@@ -0,0 +1,52 @@
|
|
+Almost all of the code present in these source files was taken
|
|
+from GLIBC. In the descriptions below, all files mentioned are
|
|
+with respect to the top level GLIBC source directory accept for
|
|
+code taken from the Linux kernel.
|
|
+
|
|
+boot1_arch.h
|
|
+------------
|
|
+Contains code to fix up the stack pointer so that the dynamic
|
|
+linker can find argc, argv and Auxillary Vector Table (AVT).
|
|
+The code is taken from the function 'RTLD_START' in the file
|
|
+'sysdeps/mips/dl-machine.h'.
|
|
+
|
|
+elfinterp.c
|
|
+-----------
|
|
+Contains the runtime resolver code taken from the function
|
|
+'__dl_runtime_resolve' in 'sysdeps/mips/dl-machine.h'. Also
|
|
+contains the function to perform relocations for objects
|
|
+other than the linker itself. The code was taken from the
|
|
+function 'elf_machine_rel' in 'sysdeps/mips/dl-machine.h'.
|
|
+
|
|
+ld_syscalls.h
|
|
+-------------
|
|
+Used to contain all the macro functions for the system calls
|
|
+as well as the list of system calls supported. We now include
|
|
+<sys/syscall.h> but with the __set_errno macro defined empty
|
|
+so we can use the same file for the linker as well as userspace.
|
|
+Original code was taken from the Linux kernel source 2.4.17 and
|
|
+can be found in the file 'include/asm-mips/unistd.h'.
|
|
+
|
|
+ld_sysdep.h
|
|
+-----------
|
|
+Contains bootstrap code for the dynamic linker, magic numbers
|
|
+for detecting MIPS target types and some macros. The macro
|
|
+function 'PERFORM_BOOTSTRAP_GOT' is used to relocate the dynamic
|
|
+linker's GOT so that function calls can be made. The code is
|
|
+taken from the function 'ELF_MACHINE_BEFORE_RTLD_RELOC' in the
|
|
+file 'sysdeps/mips/dl-machine.h'. The other macro function
|
|
+'PERFORM_BOOTSTRAP_RELOC' is used to do the relocations for
|
|
+the dynamic loader. The code is taken from the function
|
|
+'elf_machine_rel' in the file 'sysdeps/mips/dl-machine.h'. The
|
|
+final macro function is 'INIT_GOT' which initializes the GOT
|
|
+for the application being dynamically linked and loaded. The
|
|
+code is taken from the functions 'elf_machine_runtime_setup'
|
|
+and 'elf_machine_got_rel' in 'sysdeps/mips/dl-machine.h'.
|
|
+
|
|
+resolve.S
|
|
+---------
|
|
+Contains the low-level assembly code for the dynamic runtime
|
|
+resolver. The code is taken from the assembly code function
|
|
+'_dl_runtime_resolve' in the file 'sysdeps/mips/dl-machine.h'.
|
|
+The code looks a bit different since we only need to pass the
|
|
+symbol index and the old GP register.
|
|
diff -urN uClibc/ldso-0.9.24/ldso/mips/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/mips/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/mips/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/mips/boot1_arch.h 2003-06-12 16:39:10.000000000 -0500
|
|
@@ -0,0 +1,38 @@
|
|
+/* Any assmbly language/system dependent hacks needed to setup boot1.c so it
|
|
+ * will work as expected and cope with whatever platform specific wierdness is
|
|
+ * needed for this architecture.
|
|
+ */
|
|
+
|
|
+asm("" \
|
|
+" .text\n" \
|
|
+" .globl _dl_boot\n" \
|
|
+"_dl_boot:\n" \
|
|
+" .set noreorder\n" \
|
|
+" bltzal $0, 0f\n" \
|
|
+" nop\n" \
|
|
+"0: .cpload $31\n" \
|
|
+" .set reorder\n" \
|
|
+" la $4, _DYNAMIC\n" \
|
|
+" sw $4, -0x7ff0($28)\n" \
|
|
+" move $4, $29\n" \
|
|
+" la $8, coff\n" \
|
|
+" .set noreorder\n" \
|
|
+" bltzal $0, coff\n" \
|
|
+" nop\n" \
|
|
+"coff: subu $8, $31, $8\n" \
|
|
+" .set reorder\n" \
|
|
+" la $25, _dl_boot2\n" \
|
|
+" addu $25, $8\n" \
|
|
+" jalr $25\n" \
|
|
+" lw $4, 0($29)\n" \
|
|
+" la $5, 4($29)\n" \
|
|
+" sll $6, $4, 2\n" \
|
|
+" addu $6, $6, $5\n" \
|
|
+" addu $6, $6, 4\n" \
|
|
+" la $7, _dl_elf_main\n" \
|
|
+" lw $25, 0($7)\n" \
|
|
+" jr $25\n" \
|
|
+);
|
|
+
|
|
+#define _dl_boot _dl_boot2
|
|
+#define LD_BOOT(X) static void __attribute__ ((unused)) _dl_boot (X)
|
|
diff -urN uClibc/ldso-0.9.24/ldso/mips/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/mips/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/mips/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/mips/elfinterp.c 2003-08-22 02:04:16.000000000 -0500
|
|
@@ -0,0 +1,301 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* mips/mipsel ELF shared library loader suppport
|
|
+ *
|
|
+ Copyright (C) 2002, Steven J. Hill (sjhill@realitydiluted.com)
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char *_dl_reltypes_tab[] =
|
|
+{
|
|
+ [0] "R_MIPS_NONE", "R_MIPS_16", "R_MIPS_32",
|
|
+ [3] "R_MIPS_REL32", "R_MIPS_26", "R_MIPS_HI16",
|
|
+ [6] "R_MIPS_LO16", "R_MIPS_GPREL16", "R_MIPS_LITERAL",
|
|
+ [9] "R_MIPS_GOT16", "R_MIPS_PC16", "R_MIPS_CALL16",
|
|
+ [12] "R_MIPS_GPREL32",
|
|
+ [16] "R_MIPS_SHIFT5", "R_MIPS_SHIFT6", "R_MIPS_64",
|
|
+ [19] "R_MIPS_GOT_DISP", "R_MIPS_GOT_PAGE", "R_MIPS_GOT_OFST",
|
|
+ [22] "R_MIPS_GOT_HI16", "R_MIPS_GOT_LO16", "R_MIPS_SUB",
|
|
+ [25] "R_MIPS_INSERT_A", "R_MIPS_INSERT_B", "R_MIPS_DELETE",
|
|
+ [28] "R_MIPS_HIGHER", "R_MIPS_HIGHEST", "R_MIPS_CALL_HI16",
|
|
+ [31] "R_MIPS_CALL_LO16", "R_MIPS_SCN_DISP", "R_MIPS_REL16",
|
|
+ [34] "R_MIPS_ADD_IMMEDIATE", "R_MIPS_PJUMP", "R_MIPS_RELGOT",
|
|
+ [37] "R_MIPS_JALR",
|
|
+};
|
|
+
|
|
+static const char *
|
|
+_dl_reltypes(int type)
|
|
+{
|
|
+ static char buf[22];
|
|
+ const char *str;
|
|
+
|
|
+ if (type >= (int)(sizeof (_dl_reltypes_tab)/sizeof(_dl_reltypes_tab[0])) ||
|
|
+ NULL == (str = _dl_reltypes_tab[type]))
|
|
+ {
|
|
+ str =_dl_simple_ltoa( buf, (unsigned long)(type));
|
|
+ }
|
|
+ return str;
|
|
+}
|
|
+
|
|
+static
|
|
+void debug_sym(Elf32_Sym *symtab,char *strtab,int symtab_index)
|
|
+{
|
|
+ if(_dl_debug_symbols)
|
|
+ {
|
|
+ if(symtab_index){
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ symtab[symtab_index].st_value,
|
|
+ symtab[symtab_index].st_size,
|
|
+ symtab[symtab_index].st_info,
|
|
+ symtab[symtab_index].st_other,
|
|
+ symtab[symtab_index].st_shndx);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+static void debug_reloc(Elf32_Sym *symtab,char *strtab, ELF_RELOC *rpnt)
|
|
+{
|
|
+ if(_dl_debug_reloc)
|
|
+ {
|
|
+ int symtab_index;
|
|
+ const char *sym;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ sym = symtab_index ? strtab + symtab[symtab_index].st_name : "sym=0x0";
|
|
+
|
|
+ if(_dl_debug_symbols)
|
|
+ _dl_dprintf(_dl_debug_file, "\n\t");
|
|
+ else
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\t", sym);
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\taddend=%x",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset,
|
|
+ rpnt->r_addend);
|
|
+#else
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\n",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset);
|
|
+#endif
|
|
+ }
|
|
+}
|
|
+#endif
|
|
+
|
|
+extern int _dl_linux_resolve(void);
|
|
+
|
|
+#define OFFSET_GP_GOT 0x7ff0
|
|
+
|
|
+unsigned long _dl_linux_resolver(unsigned long sym_index,
|
|
+ unsigned long old_gpreg)
|
|
+{
|
|
+ unsigned long *got = (unsigned long *) (old_gpreg - OFFSET_GP_GOT);
|
|
+ struct elf_resolve *tpnt = (struct elf_resolve *) got[1];
|
|
+ Elf32_Sym *sym;
|
|
+ char *strtab;
|
|
+ unsigned long local_gotno;
|
|
+ unsigned long gotsym;
|
|
+ unsigned long new_addr;
|
|
+ unsigned long instr_addr;
|
|
+ char **got_addr;
|
|
+ char *symname;
|
|
+
|
|
+ gotsym = tpnt->mips_gotsym;
|
|
+ local_gotno = tpnt->mips_local_gotno;
|
|
+
|
|
+ sym = ((Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr)) + sym_index;
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+ symname = strtab + sym->st_name;
|
|
+
|
|
+ new_addr = (unsigned long) _dl_find_hash(strtab + sym->st_name,
|
|
+ tpnt->symbol_scope, tpnt, resolver);
|
|
+
|
|
+ /* Address of jump instruction to fix up */
|
|
+ instr_addr = (unsigned long) (got + local_gotno + sym_index - gotsym);
|
|
+ got_addr = (char **) instr_addr;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if (_dl_debug_bindings)
|
|
+ {
|
|
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s", symname);
|
|
+ if(_dl_debug_detail) _dl_dprintf(_dl_debug_file,
|
|
+ "\n\tpatched %x ==> %x @ %x\n", *got_addr, new_addr, got_addr);
|
|
+ }
|
|
+ if (!_dl_debug_nofixups) {
|
|
+ *got_addr = (char*)new_addr;
|
|
+ }
|
|
+#else
|
|
+ *got_addr = (char*)new_addr;
|
|
+#endif
|
|
+
|
|
+ return new_addr;
|
|
+}
|
|
+
|
|
+void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ /* Nothing to do */
|
|
+ return;
|
|
+}
|
|
+
|
|
+int _dl_parse_copy_information(struct dyn_elf *xpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ /* Nothing to do */
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
+int _dl_parse_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ Elf32_Sym *symtab;
|
|
+ Elf32_Rel *rpnt;
|
|
+ char *strtab;
|
|
+ unsigned long *got;
|
|
+ unsigned long *reloc_addr=NULL, old_val=0;
|
|
+ unsigned long symbol_addr;
|
|
+ int i, reloc_type, symtab_index;
|
|
+
|
|
+ /* Now parse the relocation information */
|
|
+ rel_size = rel_size / sizeof(Elf32_Rel);
|
|
+ rpnt = (Elf32_Rel *) (rel_addr + tpnt->loadaddr);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+ got = (unsigned long *) (tpnt->dynamic_info[DT_PLTGOT] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++) {
|
|
+ reloc_addr = (unsigned long *) (tpnt->loadaddr +
|
|
+ (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+
|
|
+ if (!symtab_index && tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ debug_sym(symtab,strtab,symtab_index);
|
|
+ debug_reloc(symtab,strtab,rpnt);
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+
|
|
+ switch (reloc_type) {
|
|
+ case R_MIPS_REL32:
|
|
+ if (symtab_index) {
|
|
+ if (symtab_index < tpnt->mips_gotsym)
|
|
+ *reloc_addr +=
|
|
+ symtab[symtab_index].st_value +
|
|
+ (unsigned long) tpnt->loadaddr;
|
|
+ else {
|
|
+ *reloc_addr += got[symtab_index + tpnt->mips_local_gotno -
|
|
+ tpnt->mips_gotsym];
|
|
+ }
|
|
+ }
|
|
+ else {
|
|
+ *reloc_addr += (unsigned long) tpnt->loadaddr;
|
|
+ }
|
|
+ break;
|
|
+ case R_MIPS_NONE:
|
|
+ break;
|
|
+ default:
|
|
+ {
|
|
+ int reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ _dl_dprintf(2, "\n%s: ",_dl_progname);
|
|
+
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "symbol '%s': ", strtab + symtab[symtab_index].st_name);
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "can't handle reloc type %s\n ", _dl_reltypes(reloc_type));
|
|
+#else
|
|
+ _dl_dprintf(2, "can't handle reloc type %x\n", reloc_type);
|
|
+#endif
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+ };
|
|
+
|
|
+ };
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x\n", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+void _dl_perform_mips_global_got_relocations(struct elf_resolve *tpnt)
|
|
+{
|
|
+ Elf32_Sym *sym;
|
|
+ char *strtab;
|
|
+ unsigned long i;
|
|
+ unsigned long *got_entry;
|
|
+
|
|
+ for (; tpnt ; tpnt = tpnt->next) {
|
|
+
|
|
+ /* We don't touch the dynamic linker */
|
|
+ if (tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+
|
|
+ /* Setup the loop variables */
|
|
+ got_entry = (unsigned long *) (tpnt->loadaddr +
|
|
+ tpnt->dynamic_info[DT_PLTGOT]) + tpnt->mips_local_gotno;
|
|
+ sym = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] +
|
|
+ (unsigned long) tpnt->loadaddr) + tpnt->mips_gotsym;
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] +
|
|
+ (unsigned long) tpnt->loadaddr);
|
|
+ i = tpnt->mips_symtabno - tpnt->mips_gotsym;
|
|
+
|
|
+ /* Relocate the global GOT entries for the object */
|
|
+ while(i--) {
|
|
+ if (sym->st_shndx == SHN_UNDEF) {
|
|
+ if (ELF32_ST_TYPE(sym->st_info) == STT_FUNC && sym->st_value)
|
|
+ *got_entry = sym->st_value + (unsigned long) tpnt->loadaddr;
|
|
+ else {
|
|
+ *got_entry = (unsigned long) _dl_find_hash(strtab +
|
|
+ sym->st_name, tpnt->symbol_scope, NULL, copyrel);
|
|
+ }
|
|
+ }
|
|
+ else if (sym->st_shndx == SHN_COMMON) {
|
|
+ *got_entry = (unsigned long) _dl_find_hash(strtab +
|
|
+ sym->st_name, tpnt->symbol_scope, NULL, copyrel);
|
|
+ }
|
|
+ else if (ELF32_ST_TYPE(sym->st_info) == STT_FUNC &&
|
|
+ *got_entry != sym->st_value)
|
|
+ *got_entry += (unsigned long) tpnt->loadaddr;
|
|
+ else if (ELF32_ST_TYPE(sym->st_info) == STT_SECTION) {
|
|
+ if (sym->st_other == 0)
|
|
+ *got_entry += (unsigned long) tpnt->loadaddr;
|
|
+ }
|
|
+ else {
|
|
+ *got_entry = (unsigned long) _dl_find_hash(strtab +
|
|
+ sym->st_name, tpnt->symbol_scope, NULL, copyrel);
|
|
+ }
|
|
+
|
|
+ got_entry++;
|
|
+ sym++;
|
|
+ }
|
|
+ }
|
|
+}
|
|
diff -urN uClibc/ldso-0.9.24/ldso/mips/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/mips/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/mips/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/mips/ld_syscalls.h 2002-08-09 07:20:20.000000000 -0500
|
|
@@ -0,0 +1,7 @@
|
|
+/* Define the __set_errno macro as nothing so that we don't bother
|
|
+ * setting errno, which is important since we make system calls
|
|
+ * before the errno symbol is dynamicly linked. */
|
|
+
|
|
+#define __set_errno(X) {(void)(X);}
|
|
+#include "sys/syscall.h"
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/mips/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/mips/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/mips/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/mips/ld_sysdep.h 2002-05-28 16:33:36.000000000 -0500
|
|
@@ -0,0 +1,136 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+
|
|
+/*
|
|
+ * Various assmbly language/system dependent hacks that are required
|
|
+ * so that we can minimize the amount of platform specific code.
|
|
+ */
|
|
+
|
|
+/*
|
|
+ * Define this if the system uses RELOCA.
|
|
+ */
|
|
+#undef ELF_USES_RELOCA
|
|
+
|
|
+
|
|
+/*
|
|
+ * Get a pointer to the argv array. On many platforms this can be just
|
|
+ * the address if the first argument, on other platforms we need to
|
|
+ * do something a little more subtle here.
|
|
+ */
|
|
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *) ARGS)
|
|
+
|
|
+
|
|
+/*
|
|
+ * Initialization sequence for the application/library GOT.
|
|
+ */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) \
|
|
+do { \
|
|
+ unsigned long i; \
|
|
+ \
|
|
+ /* Check if this is the dynamic linker itself */ \
|
|
+ if (MODULE->libtype == program_interpreter) \
|
|
+ continue; \
|
|
+ \
|
|
+ /* Fill in first two GOT entries according to the ABI */ \
|
|
+ GOT_BASE[0] = (unsigned long) _dl_linux_resolve; \
|
|
+ GOT_BASE[1] = (unsigned long) MODULE; \
|
|
+ \
|
|
+ /* Add load address displacement to all local GOT entries */ \
|
|
+ i = 2; \
|
|
+ while (i < MODULE->mips_local_gotno) \
|
|
+ GOT_BASE[i++] += (unsigned long) MODULE->loadaddr; \
|
|
+ \
|
|
+} while (0)
|
|
+
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform the GOT relocation. This is only
|
|
+ * used when bootstrapping the dynamic loader.
|
|
+ */
|
|
+#define PERFORM_BOOTSTRAP_GOT(got) \
|
|
+do { \
|
|
+ Elf32_Sym *sym; \
|
|
+ unsigned long i; \
|
|
+ \
|
|
+ /* Add load address displacement to all local GOT entries */ \
|
|
+ i = 2; \
|
|
+ while (i < tpnt->mips_local_gotno) \
|
|
+ got[i++] += load_addr; \
|
|
+ \
|
|
+ /* Handle global GOT entries */ \
|
|
+ got += tpnt->mips_local_gotno; \
|
|
+ sym = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + \
|
|
+ load_addr) + tpnt->mips_gotsym; \
|
|
+ i = tpnt->mips_symtabno - tpnt->mips_gotsym; \
|
|
+ \
|
|
+ while (i--) { \
|
|
+ if (sym->st_shndx == SHN_UNDEF || \
|
|
+ sym->st_shndx == SHN_COMMON) \
|
|
+ *got = load_addr + sym->st_value; \
|
|
+ else if (ELF32_ST_TYPE(sym->st_info) == STT_FUNC && \
|
|
+ *got != sym->st_value) \
|
|
+ *got += load_addr; \
|
|
+ else if (ELF32_ST_TYPE(sym->st_info) == STT_SECTION) { \
|
|
+ if (sym->st_other == 0) \
|
|
+ *got += load_addr; \
|
|
+ } \
|
|
+ else \
|
|
+ *got = load_addr + sym->st_value; \
|
|
+ \
|
|
+ got++; \
|
|
+ sym++; \
|
|
+ } \
|
|
+} while (0)
|
|
+
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform a relocation. This is only used when
|
|
+ * bootstrapping the dynamic loader.
|
|
+ */
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
|
|
+ switch(ELF32_R_TYPE((RELP)->r_info)) { \
|
|
+ case R_MIPS_REL32: \
|
|
+ if (symtab_index) { \
|
|
+ if (symtab_index < tpnt->mips_gotsym) \
|
|
+ *REL += SYMBOL; \
|
|
+ } \
|
|
+ else { \
|
|
+ *REL += LOAD; \
|
|
+ } \
|
|
+ break; \
|
|
+ case R_MIPS_NONE: \
|
|
+ break; \
|
|
+ default: \
|
|
+ SEND_STDERR("Aiieeee!"); \
|
|
+ _dl_exit(1); \
|
|
+ }
|
|
+
|
|
+
|
|
+/*
|
|
+ * Transfer control to the user's application, once the dynamic loader
|
|
+ * is done. This routine has to exit the current function, then
|
|
+ * call the _dl_elf_main function. For MIPS, we do it in assembly
|
|
+ * because the stack doesn't get properly restored otherwise. Got look
|
|
+ * at boot1_arch.h
|
|
+ */
|
|
+#define START()
|
|
+
|
|
+
|
|
+/* Here we define the magic numbers that this dynamic loader should accept */
|
|
+#define MAGIC1 EM_MIPS
|
|
+#define MAGIC2 EM_MIPS_RS3_LE
|
|
+
|
|
+
|
|
+/* Used for error messages */
|
|
+#define ELF_TARGET "MIPS"
|
|
+
|
|
+
|
|
+unsigned long _dl_linux_resolver(unsigned long sym_index,
|
|
+ unsigned long old_gpreg);
|
|
+
|
|
+
|
|
+#define do_rem(result, n, base) result = (n % base)
|
|
+
|
|
+/* 4096 bytes alignment */
|
|
+#define PAGE_ALIGN 0xfffff000
|
|
+#define ADDR_ALIGN 0xfff
|
|
+#define OFFS_ALIGN 0x7ffff000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/mips/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/mips/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/mips/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/mips/resolve.S 2003-01-30 10:40:26.000000000 -0600
|
|
@@ -0,0 +1,45 @@
|
|
+ /*
|
|
+ * Linux dynamic resolving code for MIPS. Fixes up the GOT entry as
|
|
+ * indicated in register t8 and jumps to the resolved address. Shamelessly
|
|
+ * ripped from 'sysdeps/mips/dl-machine.h' in glibc-2.2.5.
|
|
+ *
|
|
+ * This file is subject to the terms and conditions of the GNU Lesser General
|
|
+ * Public License. See the file "COPYING.LIB" in the main directory of this
|
|
+ * archive for more details.
|
|
+ *
|
|
+ * Copyright (C) 1996-2001 Kazumoto Kojima <kkojima@info.kanagawa-u.ac.jp>
|
|
+ * Copyright (C) 2002 Steven J. Hill <sjhill@realitydiluted.com>
|
|
+ *
|
|
+ */
|
|
+.text
|
|
+.align 2
|
|
+.globl _dl_linux_resolve
|
|
+.type _dl_linux_resolve,@function
|
|
+.ent _dl_linux_resolve
|
|
+_dl_linux_resolve:
|
|
+ .frame $29, 40, $31
|
|
+ .set noreorder
|
|
+ move $3, $28 # Save GP
|
|
+ addu $25, 8 # t9 ($25) now points at .cpload instruction
|
|
+ .cpload $25 # Compute GP
|
|
+ .set reorder
|
|
+ subu $29, 40
|
|
+ .cprestore 32
|
|
+ sw $15, 36($29)
|
|
+ sw $4, 16($29)
|
|
+ sw $5, 20($29)
|
|
+ sw $6, 24($29)
|
|
+ sw $7, 28($29)
|
|
+ move $4, $24
|
|
+ move $5, $3
|
|
+ jal _dl_linux_resolver
|
|
+ lw $31, 36($29)
|
|
+ lw $4, 16($29)
|
|
+ lw $5, 20($29)
|
|
+ lw $6, 24($29)
|
|
+ lw $7, 28($29)
|
|
+ addu $29, 40
|
|
+ move $25, $2
|
|
+ jr $25
|
|
+.size _dl_linux_resolve,.-_dl_linux_resolve
|
|
+.end _dl_linux_resolve
|
|
diff -urN uClibc/ldso-0.9.24/ldso/powerpc/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/powerpc/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/boot1_arch.h 2003-02-15 19:22:41.000000000 -0600
|
|
@@ -0,0 +1,20 @@
|
|
+/* Any assmbly language/system dependent hacks needed to setup boot1.c so it
|
|
+ * will work as expected and cope with whatever platform specific wierdness is
|
|
+ * needed for this architecture. */
|
|
+
|
|
+/* Overrive the default _dl_boot function, and replace it with a bit of asm.
|
|
+ * Then call the real _dl_boot function, which is now named _dl_boot2. */
|
|
+
|
|
+asm("" \
|
|
+" .text\n" \
|
|
+" .globl _dl_boot\n" \
|
|
+"_dl_boot:\n" \
|
|
+" mr 3,1\n" \
|
|
+" addi 1,1,-16\n" \
|
|
+" bl _dl_boot2\n" \
|
|
+".previous\n" \
|
|
+);
|
|
+
|
|
+#define _dl_boot _dl_boot2
|
|
+#define LD_BOOT(X) static void * __attribute__ ((unused)) _dl_boot (X)
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/powerpc/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/powerpc/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/elfinterp.c 2003-12-03 17:28:33.000000000 -0600
|
|
@@ -0,0 +1,621 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* powerpc shared library loader suppport
|
|
+ *
|
|
+ * Copyright (C) 2001-2002, David A. Schleef
|
|
+ * Copyright (C) 2003, Erik Andersen
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char *_dl_reltypes_tab[] =
|
|
+ { "R_PPC_NONE", "R_PPC_ADDR32", "R_PPC_ADDR24", "R_PPC_ADDR16",
|
|
+ "R_PPC_ADDR16_LO", "R_PPC_ADDR16_HI", "R_PPC_ADDR16_HA",
|
|
+ "R_PPC_ADDR14", "R_PPC_ADDR14_BRTAKEN", "R_PPC_ADDR14_BRNTAKEN",
|
|
+ "R_PPC_REL24", "R_PPC_REL14", "R_PPC_REL14_BRTAKEN",
|
|
+ "R_PPC_REL14_BRNTAKEN", "R_PPC_GOT16", "R_PPC_GOT16_LO",
|
|
+ "R_PPC_GOT16_HI", "R_PPC_GOT16_HA", "R_PPC_PLTREL24",
|
|
+ "R_PPC_COPY", "R_PPC_GLOB_DAT", "R_PPC_JMP_SLOT", "R_PPC_RELATIVE",
|
|
+ "R_PPC_LOCAL24PC", "R_PPC_UADDR32", "R_PPC_UADDR16", "R_PPC_REL32",
|
|
+ "R_PPC_PLT32", "R_PPC_PLTREL32", "R_PPC_PLT16_LO", "R_PPC_PLT16_HI",
|
|
+ "R_PPC_PLT16_HA", "R_PPC_SDAREL16", "R_PPC_SECTOFF",
|
|
+ "R_PPC_SECTOFF_LO", "R_PPC_SECTOFF_HI", "R_PPC_SECTOFF_HA",
|
|
+};
|
|
+
|
|
+static const char *
|
|
+_dl_reltypes(int type)
|
|
+{
|
|
+ static char buf[22];
|
|
+ const char *str;
|
|
+
|
|
+ if (type >= (int)(sizeof (_dl_reltypes_tab)/sizeof(_dl_reltypes_tab[0])) ||
|
|
+ NULL == (str = _dl_reltypes_tab[type]))
|
|
+ {
|
|
+ str =_dl_simple_ltoa( buf, (unsigned long)(type));
|
|
+ }
|
|
+ return str;
|
|
+}
|
|
+
|
|
+static
|
|
+void debug_sym(Elf32_Sym *symtab,char *strtab,int symtab_index)
|
|
+{
|
|
+ if(_dl_debug_symbols)
|
|
+ {
|
|
+ if(symtab_index){
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ symtab[symtab_index].st_value,
|
|
+ symtab[symtab_index].st_size,
|
|
+ symtab[symtab_index].st_info,
|
|
+ symtab[symtab_index].st_other,
|
|
+ symtab[symtab_index].st_shndx);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+static
|
|
+void debug_reloc(Elf32_Sym *symtab,char *strtab, ELF_RELOC *rpnt)
|
|
+{
|
|
+ if(_dl_debug_reloc)
|
|
+ {
|
|
+ int symtab_index;
|
|
+ const char *sym;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ sym = symtab_index ? strtab + symtab[symtab_index].st_name : "sym=0x0";
|
|
+
|
|
+ if(_dl_debug_symbols)
|
|
+ _dl_dprintf(_dl_debug_file, "\n\t");
|
|
+ else
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\t", sym);
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\taddend=%x",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset,
|
|
+ rpnt->r_addend);
|
|
+#else
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\n",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset);
|
|
+#endif
|
|
+ }
|
|
+}
|
|
+#endif
|
|
+
|
|
+extern int _dl_linux_resolve(void);
|
|
+
|
|
+void _dl_init_got(unsigned long *plt,struct elf_resolve *tpnt)
|
|
+{
|
|
+ unsigned long target_addr = (unsigned long)_dl_linux_resolve;
|
|
+ unsigned int n_plt_entries;
|
|
+ unsigned long *tramp;
|
|
+ unsigned long data_words;
|
|
+ unsigned int rel_offset_words;
|
|
+
|
|
+ //DPRINTF("init_got plt=%x, tpnt=%x\n", (unsigned long)plt,(unsigned long)tpnt);
|
|
+
|
|
+ n_plt_entries = tpnt->dynamic_info[DT_PLTRELSZ] / sizeof(ELF_RELOC);
|
|
+ //DPRINTF("n_plt_entries %d\n",n_plt_entries);
|
|
+
|
|
+ rel_offset_words = PLT_DATA_START_WORDS(n_plt_entries);
|
|
+ //DPRINTF("rel_offset_words %x\n",rel_offset_words);
|
|
+ data_words = (unsigned long)(plt + rel_offset_words);
|
|
+ //DPRINTF("data_words %x\n",data_words);
|
|
+
|
|
+ tpnt->data_words = data_words;
|
|
+
|
|
+ plt[PLT_LONGBRANCH_ENTRY_WORDS] = OPCODE_ADDIS_HI(11, 11, data_words);
|
|
+ plt[PLT_LONGBRANCH_ENTRY_WORDS+1] = OPCODE_LWZ(11,data_words,11);
|
|
+
|
|
+ plt[PLT_LONGBRANCH_ENTRY_WORDS+2] = OPCODE_MTCTR(11);
|
|
+ plt[PLT_LONGBRANCH_ENTRY_WORDS+3] = OPCODE_BCTR();
|
|
+
|
|
+ /* [4] */
|
|
+ /* [5] */
|
|
+
|
|
+ tramp = plt + PLT_TRAMPOLINE_ENTRY_WORDS;
|
|
+ tramp[0] = OPCODE_ADDIS_HI(11,11,-data_words);
|
|
+ tramp[1] = OPCODE_ADDI(11,11,-data_words);
|
|
+ tramp[2] = OPCODE_SLWI(12,11,1);
|
|
+ tramp[3] = OPCODE_ADD(11,12,11);
|
|
+ tramp[4] = OPCODE_LI(12,target_addr);
|
|
+ tramp[5] = OPCODE_ADDIS_HI(12,12,target_addr);
|
|
+ tramp[6] = OPCODE_MTCTR(12);
|
|
+ tramp[7] = OPCODE_LI(12,(unsigned long)tpnt);
|
|
+ tramp[8] = OPCODE_ADDIS_HI(12,12,(unsigned long)tpnt);
|
|
+ tramp[9] = OPCODE_BCTR();
|
|
+
|
|
+ /* [16] unused */
|
|
+ /* [17] unused */
|
|
+
|
|
+ /* instructions were modified */
|
|
+ PPC_DCBST(plt);
|
|
+ PPC_DCBST(plt+4);
|
|
+ PPC_DCBST(plt+8);
|
|
+ PPC_DCBST(plt+12);
|
|
+ PPC_DCBST(plt+16-1);
|
|
+ PPC_SYNC;
|
|
+ PPC_ICBI(plt);
|
|
+ PPC_ICBI(plt+4); /* glibc thinks this is not needed */
|
|
+ PPC_ICBI(plt+8); /* glibc thinks this is not needed */
|
|
+ PPC_ICBI(plt+12); /* glibc thinks this is not needed */
|
|
+ PPC_ICBI(plt+16-1);
|
|
+ PPC_ISYNC;
|
|
+}
|
|
+
|
|
+unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
|
|
+{
|
|
+ int reloc_type;
|
|
+ ELF_RELOC *this_reloc;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *rel_addr;
|
|
+ int symtab_index;
|
|
+ char *symname;
|
|
+ unsigned long insn_addr;
|
|
+ unsigned long *insns;
|
|
+ unsigned long new_addr;
|
|
+ unsigned long delta;
|
|
+
|
|
+ rel_addr = (ELF_RELOC *) (tpnt->dynamic_info[DT_JMPREL] + tpnt->loadaddr);
|
|
+
|
|
+ this_reloc = (void *)rel_addr + reloc_entry;
|
|
+ reloc_type = ELF32_R_TYPE(this_reloc->r_info);
|
|
+ symtab_index = ELF32_R_SYM(this_reloc->r_info);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ debug_sym(symtab,strtab,symtab_index);
|
|
+ debug_reloc(symtab,strtab,this_reloc);
|
|
+#endif
|
|
+
|
|
+ if (reloc_type != R_PPC_JMP_SLOT) {
|
|
+ _dl_dprintf(2, "%s: Incorrect relocation type in jump relocation\n", _dl_progname);
|
|
+ _dl_exit(1);
|
|
+ };
|
|
+
|
|
+ /* Address of dump instruction to fix up */
|
|
+ insn_addr = (unsigned long) tpnt->loadaddr +
|
|
+ (unsigned long) this_reloc->r_offset;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\n\tResolving symbol %s %x --> ", symname, insn_addr);
|
|
+#endif
|
|
+
|
|
+ /* Get the address of the GOT entry */
|
|
+ new_addr = (unsigned long) _dl_find_hash(
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ tpnt->symbol_scope, tpnt, resolver);
|
|
+ if (!new_addr) {
|
|
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, symname);
|
|
+ _dl_exit(1);
|
|
+ };
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "%x\n", new_addr);
|
|
+#endif
|
|
+
|
|
+ insns = (unsigned long *)insn_addr;
|
|
+ delta = new_addr - insn_addr;
|
|
+
|
|
+ if(delta<<6>>6 == delta){
|
|
+ insns[0] = OPCODE_B(delta);
|
|
+ }else if (new_addr <= 0x01fffffc || new_addr >= 0xfe000000){
|
|
+ insns[0] = OPCODE_BA (new_addr);
|
|
+ }else{
|
|
+ /* Warning: we don't handle double-sized PLT entries */
|
|
+ unsigned long plt_addr;
|
|
+ unsigned long *ptr;
|
|
+ int index;
|
|
+
|
|
+ plt_addr = (unsigned long)tpnt->dynamic_info[DT_PLTGOT] +
|
|
+ (unsigned long)tpnt->loadaddr;
|
|
+
|
|
+ delta = PLT_LONGBRANCH_ENTRY_WORDS*4 - (insn_addr-plt_addr+4);
|
|
+
|
|
+ index = (insn_addr - plt_addr - PLT_INITIAL_ENTRY_WORDS*4)/8;
|
|
+
|
|
+ ptr = (unsigned long *)tpnt->data_words;
|
|
+ //DPRINTF("plt_addr=%x delta=%x index=%x ptr=%x\n", plt_addr, delta, index, ptr);
|
|
+ insns += 1;
|
|
+
|
|
+ ptr[index] = new_addr;
|
|
+ PPC_SYNC;
|
|
+ /* icache sync is not necessary, since this will be a data load */
|
|
+ //PPC_DCBST(ptr+index);
|
|
+ //PPC_SYNC;
|
|
+ //PPC_ICBI(ptr+index);
|
|
+ //PPC_ISYNC;
|
|
+
|
|
+ insns[0] = OPCODE_B(delta);
|
|
+
|
|
+ }
|
|
+
|
|
+ /* instructions were modified */
|
|
+ PPC_DCBST(insns);
|
|
+ PPC_SYNC;
|
|
+ PPC_ICBI(insns);
|
|
+ PPC_ISYNC;
|
|
+
|
|
+ return new_addr;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ unsigned long rel_addr, unsigned long rel_size,
|
|
+ int (*reloc_fnc) (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab))
|
|
+{
|
|
+ unsigned int i;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *rpnt;
|
|
+ int symtab_index;
|
|
+
|
|
+ /* Now parse the relocation information */
|
|
+ rpnt = (ELF_RELOC *)(intptr_t) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size = rel_size / sizeof(ELF_RELOC);
|
|
+
|
|
+ symtab = (Elf32_Sym *)(intptr_t) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++) {
|
|
+ int res;
|
|
+
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+
|
|
+ /* When the dynamic linker bootstrapped itself, it resolved some symbols.
|
|
+ Make sure we do not do them again */
|
|
+ if (!symtab_index && tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+ if (symtab_index && tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ debug_sym(symtab,strtab,symtab_index);
|
|
+ debug_reloc(symtab,strtab,rpnt);
|
|
+#endif
|
|
+
|
|
+ res = reloc_fnc (tpnt, scope, rpnt, symtab, strtab);
|
|
+
|
|
+ if (res==0) continue;
|
|
+
|
|
+ _dl_dprintf(2, "\n%s: ",_dl_progname);
|
|
+
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "symbol '%s': ", strtab + symtab[symtab_index].st_name);
|
|
+
|
|
+ if (res <0)
|
|
+ {
|
|
+ int reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "can't handle reloc type %s\n ", _dl_reltypes(reloc_type));
|
|
+#else
|
|
+ _dl_dprintf(2, "can't handle reloc type %x\n", reloc_type);
|
|
+#endif
|
|
+ _dl_exit(-res);
|
|
+ }
|
|
+ else if (res >0)
|
|
+ {
|
|
+ _dl_dprintf(2, "can't resolve symbol\n");
|
|
+ return res;
|
|
+ }
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_lazy_reloc (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ unsigned long reloc_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+ (void)scope;
|
|
+ (void)symtab;
|
|
+ (void)strtab;
|
|
+
|
|
+ reloc_addr = (unsigned long)tpnt->loadaddr + (unsigned long) rpnt->r_offset;
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = reloc_addr;
|
|
+#endif
|
|
+
|
|
+ switch (reloc_type) {
|
|
+ case R_PPC_NONE:
|
|
+ return 0;
|
|
+ break;
|
|
+ case R_PPC_JMP_SLOT:
|
|
+ {
|
|
+ int index;
|
|
+ unsigned long delta;
|
|
+ unsigned long *plt;
|
|
+ unsigned long *insns;
|
|
+
|
|
+ plt = (unsigned long *)(tpnt->dynamic_info[DT_PLTGOT] + tpnt->loadaddr);
|
|
+
|
|
+ delta = (unsigned long)(plt+PLT_TRAMPOLINE_ENTRY_WORDS+2) - (reloc_addr+4);
|
|
+
|
|
+ index = (reloc_addr - (unsigned long)(plt+PLT_INITIAL_ENTRY_WORDS))
|
|
+ /sizeof(unsigned long);
|
|
+ index /= 2;
|
|
+ //DPRINTF(" index %x delta %x\n",index,delta);
|
|
+ insns = (unsigned long *)reloc_addr;
|
|
+ insns[0] = OPCODE_LI(11,index*4);
|
|
+ insns[1] = OPCODE_B(delta);
|
|
+ break;
|
|
+ }
|
|
+ default:
|
|
+#if 0
|
|
+ _dl_dprintf(2, "%s: (LAZY) can't handle reloc type ",
|
|
+ _dl_progname);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "%s ", _dl_reltypes[reloc_type]);
|
|
+#endif
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "'%s'\n", strtab + symtab[symtab_index].st_name);
|
|
+#endif
|
|
+ //_dl_exit(1);
|
|
+ return -1;
|
|
+ };
|
|
+
|
|
+ /* instructions were modified */
|
|
+ PPC_DCBST(reloc_addr);
|
|
+ PPC_DCBST(reloc_addr+4);
|
|
+ PPC_SYNC;
|
|
+ PPC_ICBI(reloc_addr);
|
|
+ PPC_ICBI(reloc_addr+4);
|
|
+ PPC_ISYNC;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x", old_val, reloc_addr);
|
|
+#endif
|
|
+ return 0;
|
|
+
|
|
+}
|
|
+
|
|
+static int
|
|
+_dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ char *symname;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (symtab_index) {
|
|
+
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope,
|
|
+ (reloc_type == R_PPC_JMP_SLOT ? tpnt : NULL), symbolrel);
|
|
+
|
|
+ /*
|
|
+ * We want to allow undefined references to weak symbols - this might
|
|
+ * have been intentional. We should not be linking local symbols
|
|
+ * here, so all bases should be covered.
|
|
+ */
|
|
+
|
|
+ if (!symbol_addr && ELF32_ST_BIND(symtab[symtab_index].st_info) == STB_GLOBAL) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "\tglobal symbol '%s' already defined in '%s'\n",
|
|
+ symname, tpnt->libname);
|
|
+#endif
|
|
+ return 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+ switch (reloc_type) {
|
|
+ case R_PPC_NONE:
|
|
+ return 0;
|
|
+ break;
|
|
+ case R_PPC_REL24:
|
|
+#if 0
|
|
+ {
|
|
+ unsigned long delta = symbol_addr - (unsigned long)reloc_addr;
|
|
+ if(delta<<6>>6 != delta){
|
|
+ _dl_dprintf(2,"R_PPC_REL24: Reloc out of range\n");
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+ *reloc_addr &= 0xfc000003;
|
|
+ *reloc_addr |= delta&0x03fffffc;
|
|
+ }
|
|
+ break;
|
|
+#else
|
|
+ _dl_dprintf(2, "%s: symbol '%s' is type R_PPC_REL24\n\tCompile shared libraries with -fPIC!\n",
|
|
+ _dl_progname, symname);
|
|
+ _dl_exit(1);
|
|
+#endif
|
|
+ case R_PPC_RELATIVE:
|
|
+ *reloc_addr = (unsigned long)tpnt->loadaddr + (unsigned long)rpnt->r_addend;
|
|
+ break;
|
|
+ case R_PPC_ADDR32:
|
|
+ *reloc_addr += symbol_addr;
|
|
+ break;
|
|
+ case R_PPC_ADDR16_HA:
|
|
+ /* XXX is this correct? */
|
|
+ *(short *)reloc_addr += (symbol_addr+0x8000)>>16;
|
|
+ break;
|
|
+ case R_PPC_ADDR16_HI:
|
|
+ *(short *)reloc_addr += symbol_addr>>16;
|
|
+ break;
|
|
+ case R_PPC_ADDR16_LO:
|
|
+ *(short *)reloc_addr += symbol_addr;
|
|
+ break;
|
|
+ case R_PPC_JMP_SLOT:
|
|
+ {
|
|
+ unsigned long targ_addr = (unsigned long)*reloc_addr;
|
|
+ unsigned long delta = targ_addr - (unsigned long)reloc_addr;
|
|
+ if(delta<<6>>6 == delta){
|
|
+ *reloc_addr = OPCODE_B(delta);
|
|
+ }else if (targ_addr <= 0x01fffffc || targ_addr >= 0xfe000000){
|
|
+ *reloc_addr = OPCODE_BA (targ_addr);
|
|
+ }else{
|
|
+ {
|
|
+ int index;
|
|
+ unsigned long delta2;
|
|
+ unsigned long *plt, *ptr;
|
|
+ plt = (unsigned long *)(tpnt->dynamic_info[DT_PLTGOT] + tpnt->loadaddr);
|
|
+
|
|
+ delta2 = (unsigned long)(plt+PLT_LONGBRANCH_ENTRY_WORDS)
|
|
+ - (unsigned long)(reloc_addr+1);
|
|
+
|
|
+ index = ((unsigned long)reloc_addr -
|
|
+ (unsigned long)(plt+PLT_INITIAL_ENTRY_WORDS))
|
|
+ /sizeof(unsigned long);
|
|
+ index /= 2;
|
|
+ //DPRINTF(" index %x delta %x\n",index,delta2);
|
|
+ ptr = (unsigned long *)tpnt->data_words;
|
|
+ ptr[index] = targ_addr;
|
|
+ reloc_addr[0] = OPCODE_LI(11,index*4);
|
|
+ reloc_addr[1] = OPCODE_B(delta2);
|
|
+
|
|
+ /* instructions were modified */
|
|
+ PPC_DCBST(reloc_addr+1);
|
|
+ PPC_SYNC;
|
|
+ PPC_ICBI(reloc_addr+1);
|
|
+ }
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ case R_PPC_GLOB_DAT:
|
|
+ *reloc_addr += symbol_addr;
|
|
+ break;
|
|
+ case R_PPC_COPY:
|
|
+ // handled later
|
|
+ return 0;
|
|
+ break;
|
|
+ default:
|
|
+#if 0
|
|
+ _dl_dprintf(2, "%s: can't handle reloc type ", _dl_progname);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "%s ", _dl_reltypes[reloc_type]);
|
|
+#endif
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "'%s'\n", strtab + symtab[symtab_index].st_name);
|
|
+#endif
|
|
+ //_dl_exit(1);
|
|
+ return -1;
|
|
+ };
|
|
+
|
|
+ /* instructions were modified */
|
|
+ PPC_DCBST(reloc_addr);
|
|
+ PPC_SYNC;
|
|
+ PPC_ICBI(reloc_addr);
|
|
+ PPC_ISYNC;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
+/* This is done as a separate step, because there are cases where
|
|
+ information is first copied and later initialized. This results in
|
|
+ the wrong information being copied. Someone at Sun was complaining about
|
|
+ a bug in the handling of _COPY by SVr4, and this may in fact be what he
|
|
+ was talking about. Sigh. */
|
|
+static int
|
|
+_dl_do_copy (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+ int goof = 0;
|
|
+ char *symname;
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ if (reloc_type != R_PPC_COPY)
|
|
+ return 0;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (symtab_index) {
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope, NULL, copyrel);
|
|
+ if (!symbol_addr) goof++;
|
|
+ }
|
|
+ if (!goof) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_move)
|
|
+ _dl_dprintf(_dl_debug_file,"\n%s move %x bytes from %x to %x",
|
|
+ symname, symtab[symtab_index].st_size,
|
|
+ symbol_addr, symtab[symtab_index].st_value);
|
|
+#endif
|
|
+ _dl_memcpy((char *) reloc_addr,
|
|
+ (char *) symbol_addr, symtab[symtab_index].st_size);
|
|
+ }
|
|
+
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ (void)_dl_parse(tpnt, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ return _dl_parse(tpnt, tpnt->symbol_scope, rel_addr, rel_size, _dl_do_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_copy_information(struct dyn_elf *xpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ return _dl_parse(xpnt->dyn, xpnt->next, rel_addr, rel_size, _dl_do_copy);
|
|
+}
|
|
+
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/powerpc/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/powerpc/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/ld_syscalls.h 2003-06-14 20:08:43.000000000 -0500
|
|
@@ -0,0 +1,244 @@
|
|
+/*
|
|
+ * This file contains the system call macros and syscall
|
|
+ * numbers used by the shared library loader.
|
|
+ */
|
|
+
|
|
+#define __NR_exit 1
|
|
+#define __NR_read 3
|
|
+#define __NR_write 4
|
|
+#define __NR_open 5
|
|
+#define __NR_close 6
|
|
+#define __NR_getpid 20
|
|
+#define __NR_getuid 24
|
|
+#define __NR_geteuid 49
|
|
+#define __NR_getgid 47
|
|
+#define __NR_getegid 50
|
|
+#define __NR_readlink 85
|
|
+#define __NR_mmap 90
|
|
+#define __NR_munmap 91
|
|
+#define __NR_stat 106
|
|
+#define __NR_mprotect 125
|
|
+
|
|
+/* Here are the macros which define how this platform makes
|
|
+ * system calls. This particular variant does _not_ set
|
|
+ * errno (note how it is disabled in __syscall_return) since
|
|
+ * these will get called before the errno symbol is dynamicly
|
|
+ * linked. */
|
|
+
|
|
+#undef __syscall_return
|
|
+#define __syscall_return(type) \
|
|
+ return (__sc_err & 0x10000000 ? /*errno = __sc_ret,*/ __sc_ret = -1 : 0), \
|
|
+ (type) __sc_ret
|
|
+
|
|
+#undef __syscall_clobbers
|
|
+#define __syscall_clobbers \
|
|
+ "r9", "r10", "r11", "r12"
|
|
+ //"r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
|
|
+
|
|
+#undef _syscall0
|
|
+#define _syscall0(type,name) \
|
|
+type name(void) \
|
|
+{ \
|
|
+ unsigned long __sc_ret, __sc_err; \
|
|
+ { \
|
|
+ register unsigned long __sc_0 __asm__ ("r0"); \
|
|
+ register unsigned long __sc_3 __asm__ ("r3"); \
|
|
+ \
|
|
+ __sc_0 = __NR_##name; \
|
|
+ __asm__ __volatile__ \
|
|
+ ("sc \n\t" \
|
|
+ "mfcr %1 " \
|
|
+ : "=&r" (__sc_3), "=&r" (__sc_0) \
|
|
+ : "0" (__sc_3), "1" (__sc_0) \
|
|
+ : "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
|
|
+ __sc_ret = __sc_3; \
|
|
+ __sc_err = __sc_0; \
|
|
+ } \
|
|
+ __syscall_return (type); \
|
|
+}
|
|
+
|
|
+#undef _syscall1
|
|
+#define _syscall1(type,name,type1,arg1) \
|
|
+type name(type1 arg1) \
|
|
+{ \
|
|
+ unsigned long __sc_ret, __sc_err; \
|
|
+ { \
|
|
+ register unsigned long __sc_0 __asm__ ("r0"); \
|
|
+ register unsigned long __sc_3 __asm__ ("r3"); \
|
|
+ \
|
|
+ __sc_3 = (unsigned long) (arg1); \
|
|
+ __sc_0 = __NR_##name; \
|
|
+ __asm__ __volatile__ \
|
|
+ ("sc \n\t" \
|
|
+ "mfcr %1 " \
|
|
+ : "=&r" (__sc_3), "=&r" (__sc_0) \
|
|
+ : "0" (__sc_3), "1" (__sc_0) \
|
|
+ : "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
|
|
+ __sc_ret = __sc_3; \
|
|
+ __sc_err = __sc_0; \
|
|
+ } \
|
|
+ __syscall_return (type); \
|
|
+}
|
|
+
|
|
+#undef _syscall2
|
|
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
|
|
+type name(type1 arg1, type2 arg2) \
|
|
+{ \
|
|
+ unsigned long __sc_ret, __sc_err; \
|
|
+ { \
|
|
+ register unsigned long __sc_0 __asm__ ("r0"); \
|
|
+ register unsigned long __sc_3 __asm__ ("r3"); \
|
|
+ register unsigned long __sc_4 __asm__ ("r4"); \
|
|
+ \
|
|
+ __sc_3 = (unsigned long) (arg1); \
|
|
+ __sc_4 = (unsigned long) (arg2); \
|
|
+ __sc_0 = __NR_##name; \
|
|
+ __asm__ __volatile__ \
|
|
+ ("sc \n\t" \
|
|
+ "mfcr %1 " \
|
|
+ : "=&r" (__sc_3), "=&r" (__sc_0) \
|
|
+ : "0" (__sc_3), "1" (__sc_0), \
|
|
+ "r" (__sc_4) \
|
|
+ : "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
|
|
+ __sc_ret = __sc_3; \
|
|
+ __sc_err = __sc_0; \
|
|
+ } \
|
|
+ __syscall_return (type); \
|
|
+}
|
|
+
|
|
+#undef _syscall3
|
|
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
|
|
+type name(type1 arg1, type2 arg2, type3 arg3) \
|
|
+{ \
|
|
+ unsigned long __sc_ret, __sc_err; \
|
|
+ { \
|
|
+ register unsigned long __sc_0 __asm__ ("r0"); \
|
|
+ register unsigned long __sc_3 __asm__ ("r3"); \
|
|
+ register unsigned long __sc_4 __asm__ ("r4"); \
|
|
+ register unsigned long __sc_5 __asm__ ("r5"); \
|
|
+ \
|
|
+ __sc_3 = (unsigned long) (arg1); \
|
|
+ __sc_4 = (unsigned long) (arg2); \
|
|
+ __sc_5 = (unsigned long) (arg3); \
|
|
+ __sc_0 = __NR_##name; \
|
|
+ __asm__ __volatile__ \
|
|
+ ("sc \n\t" \
|
|
+ "mfcr %1 " \
|
|
+ : "=&r" (__sc_3), "=&r" (__sc_0) \
|
|
+ : "0" (__sc_3), "1" (__sc_0), \
|
|
+ "r" (__sc_4), \
|
|
+ "r" (__sc_5) \
|
|
+ : "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
|
|
+ __sc_ret = __sc_3; \
|
|
+ __sc_err = __sc_0; \
|
|
+ } \
|
|
+ __syscall_return (type); \
|
|
+}
|
|
+
|
|
+#undef _syscall4
|
|
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
|
|
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
|
|
+{ \
|
|
+ unsigned long __sc_ret, __sc_err; \
|
|
+ { \
|
|
+ register unsigned long __sc_0 __asm__ ("r0"); \
|
|
+ register unsigned long __sc_3 __asm__ ("r3"); \
|
|
+ register unsigned long __sc_4 __asm__ ("r4"); \
|
|
+ register unsigned long __sc_5 __asm__ ("r5"); \
|
|
+ register unsigned long __sc_6 __asm__ ("r6"); \
|
|
+ \
|
|
+ __sc_3 = (unsigned long) (arg1); \
|
|
+ __sc_4 = (unsigned long) (arg2); \
|
|
+ __sc_5 = (unsigned long) (arg3); \
|
|
+ __sc_6 = (unsigned long) (arg4); \
|
|
+ __sc_0 = __NR_##name; \
|
|
+ __asm__ __volatile__ \
|
|
+ ("sc \n\t" \
|
|
+ "mfcr %1 " \
|
|
+ : "=&r" (__sc_3), "=&r" (__sc_0) \
|
|
+ : "0" (__sc_3), "1" (__sc_0), \
|
|
+ "r" (__sc_4), \
|
|
+ "r" (__sc_5), \
|
|
+ "r" (__sc_6) \
|
|
+ : "r7", "r8", "r9", "r10", "r11", "r12" ); \
|
|
+ __sc_ret = __sc_3; \
|
|
+ __sc_err = __sc_0; \
|
|
+ } \
|
|
+ __syscall_return (type); \
|
|
+}
|
|
+
|
|
+#undef _syscall5
|
|
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
|
|
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
|
|
+{ \
|
|
+ unsigned long __sc_ret, __sc_err; \
|
|
+ { \
|
|
+ register unsigned long __sc_0 __asm__ ("r0"); \
|
|
+ register unsigned long __sc_3 __asm__ ("r3"); \
|
|
+ register unsigned long __sc_4 __asm__ ("r4"); \
|
|
+ register unsigned long __sc_5 __asm__ ("r5"); \
|
|
+ register unsigned long __sc_6 __asm__ ("r6"); \
|
|
+ register unsigned long __sc_7 __asm__ ("r7"); \
|
|
+ \
|
|
+ __sc_3 = (unsigned long) (arg1); \
|
|
+ __sc_4 = (unsigned long) (arg2); \
|
|
+ __sc_5 = (unsigned long) (arg3); \
|
|
+ __sc_6 = (unsigned long) (arg4); \
|
|
+ __sc_7 = (unsigned long) (arg5); \
|
|
+ __sc_0 = __NR_##name; \
|
|
+ __asm__ __volatile__ \
|
|
+ ("sc \n\t" \
|
|
+ "mfcr %1 " \
|
|
+ : "=&r" (__sc_3), "=&r" (__sc_0) \
|
|
+ : "0" (__sc_3), "1" (__sc_0), \
|
|
+ "r" (__sc_4), \
|
|
+ "r" (__sc_5), \
|
|
+ "r" (__sc_6), \
|
|
+ "r" (__sc_7) \
|
|
+ : "r8", "r9", "r10", "r11", "r12" ); \
|
|
+ __sc_ret = __sc_3; \
|
|
+ __sc_err = __sc_0; \
|
|
+ } \
|
|
+ __syscall_return (type); \
|
|
+}
|
|
+
|
|
+
|
|
+#undef _syscall6
|
|
+#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5,type6,arg6) \
|
|
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6) \
|
|
+{ \
|
|
+ unsigned long __sc_ret, __sc_err; \
|
|
+ { \
|
|
+ register unsigned long __sc_0 __asm__ ("r0"); \
|
|
+ register unsigned long __sc_3 __asm__ ("r3"); \
|
|
+ register unsigned long __sc_4 __asm__ ("r4"); \
|
|
+ register unsigned long __sc_5 __asm__ ("r5"); \
|
|
+ register unsigned long __sc_6 __asm__ ("r6"); \
|
|
+ register unsigned long __sc_7 __asm__ ("r7"); \
|
|
+ register unsigned long __sc_8 __asm__ ("r8"); \
|
|
+ \
|
|
+ __sc_3 = (unsigned long) (arg1); \
|
|
+ __sc_4 = (unsigned long) (arg2); \
|
|
+ __sc_5 = (unsigned long) (arg3); \
|
|
+ __sc_6 = (unsigned long) (arg4); \
|
|
+ __sc_7 = (unsigned long) (arg5); \
|
|
+ __sc_8 = (unsigned long) (arg6); \
|
|
+ __sc_0 = __NR_##name; \
|
|
+ __asm__ __volatile__ \
|
|
+ ("sc \n\t" \
|
|
+ "mfcr %1 " \
|
|
+ : "=&r" (__sc_3), "=&r" (__sc_0) \
|
|
+ : "0" (__sc_3), "1" (__sc_0), \
|
|
+ "r" (__sc_4), \
|
|
+ "r" (__sc_5), \
|
|
+ "r" (__sc_6), \
|
|
+ "r" (__sc_7), \
|
|
+ "r" (__sc_8) \
|
|
+ : "r9", "r10", "r11", "r12" ); \
|
|
+ __sc_ret = __sc_3; \
|
|
+ __sc_err = __sc_0; \
|
|
+ } \
|
|
+ __syscall_return (type); \
|
|
+}
|
|
+
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/powerpc/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/powerpc/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/ld_sysdep.h 2003-12-03 17:38:43.000000000 -0600
|
|
@@ -0,0 +1,136 @@
|
|
+/*
|
|
+ * Various assmbly language/system dependent hacks that are required
|
|
+ * so that we can minimize the amount of platform specific code.
|
|
+ */
|
|
+
|
|
+/*
|
|
+ * Define this if the system uses RELOCA.
|
|
+ */
|
|
+#define ELF_USES_RELOCA
|
|
+
|
|
+/*
|
|
+ * Get a pointer to the argv array. On many platforms this can be just
|
|
+ * the address if the first argument, on other platforms we need to
|
|
+ * do something a little more subtle here.
|
|
+ */
|
|
+#define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long*) ARGS)+1)
|
|
+
|
|
+/*
|
|
+ * Initialization sequence for a GOT.
|
|
+ */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) _dl_init_got(GOT_BASE,MODULE)
|
|
+
|
|
+/* Stuff for the PLT. */
|
|
+#define PLT_INITIAL_ENTRY_WORDS 18
|
|
+#define PLT_LONGBRANCH_ENTRY_WORDS 0
|
|
+#define PLT_TRAMPOLINE_ENTRY_WORDS 6
|
|
+#define PLT_DOUBLE_SIZE (1<<13)
|
|
+#define PLT_ENTRY_START_WORDS(entry_number) \
|
|
+ (PLT_INITIAL_ENTRY_WORDS + (entry_number)*2 \
|
|
+ + ((entry_number) > PLT_DOUBLE_SIZE \
|
|
+ ? ((entry_number) - PLT_DOUBLE_SIZE)*2 \
|
|
+ : 0))
|
|
+#define PLT_DATA_START_WORDS(num_entries) PLT_ENTRY_START_WORDS(num_entries)
|
|
+
|
|
+/* Macros to build PowerPC opcode words. */
|
|
+#define OPCODE_ADDI(rd,ra,simm) \
|
|
+ (0x38000000 | (rd) << 21 | (ra) << 16 | ((simm) & 0xffff))
|
|
+#define OPCODE_ADDIS(rd,ra,simm) \
|
|
+ (0x3c000000 | (rd) << 21 | (ra) << 16 | ((simm) & 0xffff))
|
|
+#define OPCODE_ADD(rd,ra,rb) \
|
|
+ (0x7c000214 | (rd) << 21 | (ra) << 16 | (rb) << 11)
|
|
+#define OPCODE_B(target) (0x48000000 | ((target) & 0x03fffffc))
|
|
+#define OPCODE_BA(target) (0x48000002 | ((target) & 0x03fffffc))
|
|
+#define OPCODE_BCTR() 0x4e800420
|
|
+#define OPCODE_LWZ(rd,d,ra) \
|
|
+ (0x80000000 | (rd) << 21 | (ra) << 16 | ((d) & 0xffff))
|
|
+#define OPCODE_LWZU(rd,d,ra) \
|
|
+ (0x84000000 | (rd) << 21 | (ra) << 16 | ((d) & 0xffff))
|
|
+#define OPCODE_MTCTR(rd) (0x7C0903A6 | (rd) << 21)
|
|
+#define OPCODE_RLWINM(ra,rs,sh,mb,me) \
|
|
+ (0x54000000 | (rs) << 21 | (ra) << 16 | (sh) << 11 | (mb) << 6 | (me) << 1)
|
|
+
|
|
+#define OPCODE_LI(rd,simm) OPCODE_ADDI(rd,0,simm)
|
|
+#define OPCODE_ADDIS_HI(rd,ra,value) \
|
|
+ OPCODE_ADDIS(rd,ra,((value) + 0x8000) >> 16)
|
|
+#define OPCODE_LIS_HI(rd,value) OPCODE_ADDIS_HI(rd,0,value)
|
|
+#define OPCODE_SLWI(ra,rs,sh) OPCODE_RLWINM(ra,rs,sh,0,31-sh)
|
|
+
|
|
+
|
|
+#define PPC_DCBST(where) asm volatile ("dcbst 0,%0" : : "r"(where) : "memory")
|
|
+#define PPC_SYNC asm volatile ("sync" : : : "memory")
|
|
+#define PPC_ISYNC asm volatile ("sync; isync" : : : "memory")
|
|
+#define PPC_ICBI(where) asm volatile ("icbi 0,%0" : : "r"(where) : "memory")
|
|
+#define PPC_DIE asm volatile ("tweq 0,0")
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform a relocation. This is only used when
|
|
+ * bootstrapping the dynamic loader. RELP is the relocation that we
|
|
+ * are performing, REL is the pointer to the address we are relocating.
|
|
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
|
|
+ * load address.
|
|
+ */
|
|
+// finaladdr = LOAD ?
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
|
|
+ {int type=ELF32_R_TYPE((RELP)->r_info); \
|
|
+ if(type==R_PPC_NONE){ \
|
|
+ }else if(type==R_PPC_ADDR32){ \
|
|
+ *REL += (SYMBOL); \
|
|
+ }else if(type==R_PPC_RELATIVE){ \
|
|
+ *REL = (Elf32_Word)(LOAD) + (RELP)->r_addend; \
|
|
+ }else if(type==R_PPC_REL24){ \
|
|
+ Elf32_Sword delta = (Elf32_Word)(SYMBOL) - (Elf32_Word)(REL); \
|
|
+ *REL &= 0xfc000003; \
|
|
+ *REL |= (delta & 0x03fffffc); \
|
|
+ }else if(type==R_PPC_JMP_SLOT){ \
|
|
+ Elf32_Sword delta = (Elf32_Word)(SYMBOL) - (Elf32_Word)(REL); \
|
|
+ /*if (delta << 6 >> 6 != delta)_dl_exit(99);*/ \
|
|
+ *REL = OPCODE_B(delta); \
|
|
+ }else{ \
|
|
+ _dl_exit(100+ELF32_R_TYPE((RELP)->r_info)); \
|
|
+ } \
|
|
+ if(type!=R_PPC_NONE){ \
|
|
+ PPC_DCBST(REL); PPC_SYNC; PPC_ICBI(REL);\
|
|
+ } \
|
|
+ }
|
|
+
|
|
+/*
|
|
+ * Transfer control to the user's application, once the dynamic loader
|
|
+ * is done. This routine has to exit the current function, then
|
|
+ * call the _dl_elf_main function.
|
|
+ */
|
|
+
|
|
+/* hgb@ifi.uio.no:
|
|
+ * Adding a clobber list consisting of r0 for %1. addi on PowerPC
|
|
+ * takes a register as the second argument, but if the register is
|
|
+ * r0, the value 0 is used instead. If r0 is used here, the stack
|
|
+ * pointer (r1) will be zeroed, and the dynamically linked
|
|
+ * application will seg.fault immediatly when receiving control.
|
|
+ */
|
|
+#define START() \
|
|
+ __asm__ volatile ( \
|
|
+ "addi 1,%1,0\n\t" \
|
|
+ "mtlr %0\n\t" \
|
|
+ "blrl\n\t" \
|
|
+ : : "r" (_dl_elf_main), "r" (args) \
|
|
+ : "r0")
|
|
+
|
|
+
|
|
+/* Here we define the magic numbers that this dynamic loader should accept */
|
|
+
|
|
+#define MAGIC1 EM_PPC
|
|
+#undef MAGIC2
|
|
+/* Used for error messages */
|
|
+#define ELF_TARGET "powerpc"
|
|
+
|
|
+struct elf_resolve;
|
|
+extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
|
|
+void _dl_init_got(unsigned long *lpnt,struct elf_resolve *tpnt);
|
|
+
|
|
+
|
|
+#define do_rem(result, n, base) result = (n % base)
|
|
+
|
|
+/* 4096 bytes alignment */
|
|
+#define PAGE_ALIGN 0xfffff000
|
|
+#define ADDR_ALIGN 0xfff
|
|
+#define OFFS_ALIGN 0x7ffff000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/powerpc/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/powerpc/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/powerpc/resolve.S 2001-07-12 05:14:09.000000000 -0500
|
|
@@ -0,0 +1,82 @@
|
|
+/*
|
|
+ * Stolen from glibc-2.2.2 by David Schleef <ds@schleef.org>
|
|
+ */
|
|
+
|
|
+.text
|
|
+.align 4
|
|
+
|
|
+.globl _dl_linux_resolver
|
|
+
|
|
+.globl _dl_linux_resolve
|
|
+.type _dl_linux_resolve,@function
|
|
+
|
|
+_dl_linux_resolve:
|
|
+// We need to save the registers used to pass parameters, and register 0,
|
|
+// which is used by _mcount; the registers are saved in a stack frame.
|
|
+ stwu 1,-64(1)
|
|
+ stw 0,12(1)
|
|
+ stw 3,16(1)
|
|
+ stw 4,20(1)
|
|
+// The code that calls this has put parameters for 'fixup' in r12 and r11.
|
|
+ mr 3,12
|
|
+ stw 5,24(1)
|
|
+ mr 4,11
|
|
+ stw 6,28(1)
|
|
+ mflr 0
|
|
+// We also need to save some of the condition register fields.
|
|
+ stw 7,32(1)
|
|
+ stw 0,48(1)
|
|
+ stw 8,36(1)
|
|
+ mfcr 0
|
|
+ stw 9,40(1)
|
|
+ stw 10,44(1)
|
|
+ stw 0,8(1)
|
|
+ bl _dl_linux_resolver@local
|
|
+// 'fixup' returns the address we want to branch to.
|
|
+ mtctr 3
|
|
+// Put the registers back...
|
|
+ lwz 0,48(1)
|
|
+ lwz 10,44(1)
|
|
+ lwz 9,40(1)
|
|
+ mtlr 0
|
|
+ lwz 8,36(1)
|
|
+ lwz 0,8(1)
|
|
+ lwz 7,32(1)
|
|
+ lwz 6,28(1)
|
|
+ mtcrf 0xFF,0
|
|
+ lwz 5,24(1)
|
|
+ lwz 4,20(1)
|
|
+ lwz 3,16(1)
|
|
+ lwz 0,12(1)
|
|
+// ...unwind the stack frame, and jump to the PLT entry we updated.
|
|
+ addi 1,1,64
|
|
+ bctr
|
|
+
|
|
+.LFE2:
|
|
+ .size _dl_linux_resolve,.LFE2-_dl_linux_resolve
|
|
+
|
|
+#if 0
|
|
+
|
|
+ pusha /* preserve all regs */
|
|
+ lea 0x20(%esp),%eax /* eax = tpnt and reloc_entry params */
|
|
+ pushl 4(%eax) /* push copy of reloc_entry param */
|
|
+ pushl (%eax) /* push copy of tpnt param */
|
|
+
|
|
+#ifdef __PIC__
|
|
+ call .L24
|
|
+.L24:
|
|
+ popl %ebx
|
|
+ addl $_GLOBAL_OFFSET_TABLE_+[.-.L24],%ebx
|
|
+ movl _dl_linux_resolver@GOT(%ebx),%ebx /* eax = resolved func */
|
|
+ call *%ebx
|
|
+#else
|
|
+ call _dl_linux_resolver
|
|
+#endif
|
|
+ movl %eax,0x28(%esp) /* store func addr over original
|
|
+ * tpnt param */
|
|
+ addl $0x8,%esp /* remove copy parameters */
|
|
+ popa /* restore regs */
|
|
+ ret $4 /* jump to func removing original
|
|
+ * reloc_entry param from stack */
|
|
+#endif
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/readelflib1.c uClibc.ldso.24/ldso-0.9.24/ldso/readelflib1.c
|
|
--- uClibc/ldso-0.9.24/ldso/readelflib1.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/readelflib1.c 2003-12-05 14:24:26.000000000 -0600
|
|
@@ -0,0 +1,971 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* Program to load an ELF binary on a linux system, and run it
|
|
+ * after resolving ELF shared library symbols
|
|
+ *
|
|
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
|
|
+ * David Engel, Hongjiu Lu and Mitch D'Souza
|
|
+ * Copyright (C) 2001-2003, Erik Andersen
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+
|
|
+/* This file contains the helper routines to load an ELF sharable
|
|
+ library into memory and add the symbol table info to the chain. */
|
|
+
|
|
+#ifdef USE_CACHE
|
|
+
|
|
+static caddr_t _dl_cache_addr = NULL;
|
|
+static size_t _dl_cache_size = 0;
|
|
+
|
|
+int _dl_map_cache(void)
|
|
+{
|
|
+ int fd;
|
|
+ struct stat st;
|
|
+ header_t *header;
|
|
+ libentry_t *libent;
|
|
+ int i, strtabsize;
|
|
+
|
|
+ if (_dl_cache_addr == (caddr_t) - 1)
|
|
+ return -1;
|
|
+ else if (_dl_cache_addr != NULL)
|
|
+ return 0;
|
|
+
|
|
+ if (_dl_stat(LDSO_CACHE, &st)
|
|
+ || (fd = _dl_open(LDSO_CACHE, O_RDONLY)) < 0) {
|
|
+ _dl_dprintf(2, "%s: can't open cache '%s'\n", _dl_progname, LDSO_CACHE);
|
|
+ _dl_cache_addr = (caddr_t) - 1; /* so we won't try again */
|
|
+ return -1;
|
|
+ }
|
|
+
|
|
+ _dl_cache_size = st.st_size;
|
|
+ _dl_cache_addr = (caddr_t) _dl_mmap(0, _dl_cache_size, PROT_READ, MAP_SHARED, fd, 0);
|
|
+ _dl_close(fd);
|
|
+ if (_dl_mmap_check_error(_dl_cache_addr)) {
|
|
+ _dl_dprintf(2, "%s: can't map cache '%s'\n",
|
|
+ _dl_progname, LDSO_CACHE);
|
|
+ return -1;
|
|
+ }
|
|
+
|
|
+ header = (header_t *) _dl_cache_addr;
|
|
+
|
|
+ if (_dl_cache_size < sizeof(header_t) ||
|
|
+ _dl_memcmp(header->magic, LDSO_CACHE_MAGIC, LDSO_CACHE_MAGIC_LEN)
|
|
+ || _dl_memcmp(header->version, LDSO_CACHE_VER, LDSO_CACHE_VER_LEN)
|
|
+ || _dl_cache_size <
|
|
+ (sizeof(header_t) + header->nlibs * sizeof(libentry_t))
|
|
+ || _dl_cache_addr[_dl_cache_size - 1] != '\0')
|
|
+ {
|
|
+ _dl_dprintf(2, "%s: cache '%s' is corrupt\n", _dl_progname,
|
|
+ LDSO_CACHE);
|
|
+ goto fail;
|
|
+ }
|
|
+
|
|
+ strtabsize = _dl_cache_size - sizeof(header_t) -
|
|
+ header->nlibs * sizeof(libentry_t);
|
|
+ libent = (libentry_t *) & header[1];
|
|
+
|
|
+ for (i = 0; i < header->nlibs; i++) {
|
|
+ if (libent[i].sooffset >= strtabsize ||
|
|
+ libent[i].liboffset >= strtabsize)
|
|
+ {
|
|
+ _dl_dprintf(2, "%s: cache '%s' is corrupt\n", _dl_progname, LDSO_CACHE);
|
|
+ goto fail;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+
|
|
+ fail:
|
|
+ _dl_munmap(_dl_cache_addr, _dl_cache_size);
|
|
+ _dl_cache_addr = (caddr_t) - 1;
|
|
+ return -1;
|
|
+}
|
|
+
|
|
+int _dl_unmap_cache(void)
|
|
+{
|
|
+ if (_dl_cache_addr == NULL || _dl_cache_addr == (caddr_t) - 1)
|
|
+ return -1;
|
|
+
|
|
+#if 1
|
|
+ _dl_munmap(_dl_cache_addr, _dl_cache_size);
|
|
+ _dl_cache_addr = NULL;
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#endif
|
|
+
|
|
+/* This function's behavior must exactly match that
|
|
+ * in uClibc/ldso/util/ldd.c */
|
|
+static struct elf_resolve *
|
|
+search_for_named_library(const char *name, int secure, const char *path_list,
|
|
+ struct dyn_elf **rpnt)
|
|
+{
|
|
+ int i, count = 1;
|
|
+ char *path, *path_n;
|
|
+ char mylibname[2050];
|
|
+ struct elf_resolve *tpnt1;
|
|
+
|
|
+ if (path_list==NULL)
|
|
+ return NULL;
|
|
+
|
|
+ /* We need a writable copy of this string */
|
|
+ path = _dl_strdup(path_list);
|
|
+ if (!path) {
|
|
+ _dl_dprintf(2, "Out of memory!\n");
|
|
+ _dl_exit(0);
|
|
+ }
|
|
+
|
|
+
|
|
+ /* Unlike ldd.c, don't bother to eliminate double //s */
|
|
+
|
|
+
|
|
+ /* Replace colons with zeros in path_list and count them */
|
|
+ for(i=_dl_strlen(path); i > 0; i--) {
|
|
+ if (path[i]==':') {
|
|
+ path[i]=0;
|
|
+ count++;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ path_n = path;
|
|
+ for (i = 0; i < count; i++) {
|
|
+ _dl_strcpy(mylibname, path_n);
|
|
+ _dl_strcat(mylibname, "/");
|
|
+ _dl_strcat(mylibname, name);
|
|
+ if ((tpnt1 = _dl_load_elf_shared_library(secure, rpnt, mylibname)) != NULL)
|
|
+ {
|
|
+ return tpnt1;
|
|
+ }
|
|
+ path_n += (_dl_strlen(path_n) + 1);
|
|
+ }
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+/* Check if the named library is already loaded... */
|
|
+struct elf_resolve *_dl_check_if_named_library_is_loaded(const char *full_libname)
|
|
+{
|
|
+ const char *pnt, *pnt1;
|
|
+ struct elf_resolve *tpnt1;
|
|
+ const char *libname, *libname2;
|
|
+ static const char *libc = "libc.so.";
|
|
+ static const char *aborted_wrong_lib = "%s: aborted attempt to load %s!\n";
|
|
+
|
|
+ pnt = libname = full_libname;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(_dl_debug_file, "Checking if '%s' is already loaded\n", full_libname);
|
|
+#endif
|
|
+ /* quick hack to ensure mylibname buffer doesn't overflow. don't
|
|
+ allow full_libname or any directory to be longer than 1024. */
|
|
+ if (_dl_strlen(full_libname) > 1024)
|
|
+ return NULL;
|
|
+
|
|
+ /* Skip over any initial initial './' and '/' stuff to
|
|
+ * get the short form libname with no path garbage */
|
|
+ pnt1 = _dl_strrchr(pnt, '/');
|
|
+ if (pnt1) {
|
|
+ libname = pnt1 + 1;
|
|
+ }
|
|
+
|
|
+ /* Make sure they are not trying to load the wrong C library!
|
|
+ * This sometimes happens esp with shared libraries when the
|
|
+ * library path is somehow wrong! */
|
|
+#define isdigit(c) (c >= '0' && c <= '9')
|
|
+ if ((_dl_strncmp(libname, libc, 8) == 0) && _dl_strlen(libname) >=8 &&
|
|
+ isdigit(libname[8]))
|
|
+ {
|
|
+ /* Abort attempts to load glibc, libc5, etc */
|
|
+ if ( libname[8]!='0') {
|
|
+ if (!_dl_trace_loaded_objects) {
|
|
+ _dl_dprintf(2, aborted_wrong_lib, libname, _dl_progname);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+ return NULL;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ /* Critical step! Weed out duplicates early to avoid
|
|
+ * function aliasing, which wastes memory, and causes
|
|
+ * really bad things to happen with weaks and globals. */
|
|
+ for (tpnt1 = _dl_loaded_modules; tpnt1; tpnt1 = tpnt1->next) {
|
|
+
|
|
+ /* Skip over any initial initial './' and '/' stuff to
|
|
+ * get the short form libname with no path garbage */
|
|
+ libname2 = tpnt1->libname;
|
|
+ pnt1 = _dl_strrchr(libname2, '/');
|
|
+ if (pnt1) {
|
|
+ libname2 = pnt1 + 1;
|
|
+ }
|
|
+
|
|
+ if (_dl_strcmp(libname2, libname) == 0) {
|
|
+ /* Well, that was certainly easy */
|
|
+ return tpnt1;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+
|
|
+
|
|
+/*
|
|
+ * Used to return error codes back to dlopen et. al.
|
|
+ */
|
|
+
|
|
+unsigned long _dl_error_number;
|
|
+unsigned long _dl_internal_error_number;
|
|
+extern char *_dl_ldsopath;
|
|
+
|
|
+struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt,
|
|
+ struct elf_resolve *tpnt, char *full_libname)
|
|
+{
|
|
+ char *pnt, *pnt1;
|
|
+ struct elf_resolve *tpnt1;
|
|
+ char *libname;
|
|
+
|
|
+ _dl_internal_error_number = 0;
|
|
+ libname = full_libname;
|
|
+
|
|
+ /* quick hack to ensure mylibname buffer doesn't overflow. don't
|
|
+ allow full_libname or any directory to be longer than 1024. */
|
|
+ if (_dl_strlen(full_libname) > 1024)
|
|
+ goto goof;
|
|
+
|
|
+ /* Skip over any initial initial './' and '/' stuff to
|
|
+ * get the short form libname with no path garbage */
|
|
+ pnt1 = _dl_strrchr(libname, '/');
|
|
+ if (pnt1) {
|
|
+ libname = pnt1 + 1;
|
|
+ }
|
|
+
|
|
+ /* Critical step! Weed out duplicates early to avoid
|
|
+ * function aliasing, which wastes memory, and causes
|
|
+ * really bad things to happen with weaks and globals. */
|
|
+ if ((tpnt1=_dl_check_if_named_library_is_loaded(libname))!=NULL)
|
|
+ return tpnt1;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tfind library='%s'; searching\n", libname);
|
|
+#endif
|
|
+ /* If the filename has any '/', try it straight and leave it at that.
|
|
+ For IBCS2 compatibility under linux, we substitute the string
|
|
+ /usr/i486-sysv4/lib for /usr/lib in library names. */
|
|
+
|
|
+ if (libname != full_libname) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\ttrying file='%s'\n", full_libname);
|
|
+#endif
|
|
+ tpnt1 = _dl_load_elf_shared_library(secure, rpnt, full_libname);
|
|
+ if (tpnt1) {
|
|
+ return tpnt1;
|
|
+ }
|
|
+ //goto goof;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * The ABI specifies that RPATH is searched before LD_*_PATH or
|
|
+ * the default path of /usr/lib. Check in rpath directories.
|
|
+ */
|
|
+ for (tpnt = _dl_loaded_modules; tpnt; tpnt = tpnt->next) {
|
|
+ if (tpnt->libtype == elf_executable) {
|
|
+ pnt = (char *) tpnt->dynamic_info[DT_RPATH];
|
|
+ if (pnt) {
|
|
+ pnt += (unsigned long) tpnt->loadaddr + tpnt->dynamic_info[DT_STRTAB];
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tsearching RPATH='%s'\n", pnt);
|
|
+#endif
|
|
+ if ((tpnt1 = search_for_named_library(libname, secure, pnt, rpnt)) != NULL)
|
|
+ {
|
|
+ return tpnt1;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ /* Check in LD_{ELF_}LIBRARY_PATH, if specified and allowed */
|
|
+ if (_dl_library_path) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tsearching LD_LIBRARY_PATH='%s'\n", _dl_library_path);
|
|
+#endif
|
|
+ if ((tpnt1 = search_for_named_library(libname, secure, _dl_library_path, rpnt)) != NULL)
|
|
+ {
|
|
+ return tpnt1;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Where should the cache be searched? There is no such concept in the
|
|
+ * ABI, so we have some flexibility here. For now, search it before
|
|
+ * the hard coded paths that follow (i.e before /lib and /usr/lib).
|
|
+ */
|
|
+#ifdef USE_CACHE
|
|
+ if (_dl_cache_addr != NULL && _dl_cache_addr != (caddr_t) - 1) {
|
|
+ int i;
|
|
+ header_t *header = (header_t *) _dl_cache_addr;
|
|
+ libentry_t *libent = (libentry_t *) & header[1];
|
|
+ char *strs = (char *) &libent[header->nlibs];
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tsearching cache='%s'\n", LDSO_CACHE);
|
|
+#endif
|
|
+ for (i = 0; i < header->nlibs; i++) {
|
|
+ if ((libent[i].flags == LIB_ELF ||
|
|
+ libent[i].flags == LIB_ELF_LIBC5) &&
|
|
+ _dl_strcmp(libname, strs + libent[i].sooffset) == 0 &&
|
|
+ (tpnt1 = _dl_load_elf_shared_library(secure,
|
|
+ rpnt, strs + libent[i].liboffset)))
|
|
+ return tpnt1;
|
|
+ }
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ /* Look for libraries wherever the shared library loader
|
|
+ * was installed */
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tsearching ldso dir='%s'\n", _dl_ldsopath);
|
|
+#endif
|
|
+ if ((tpnt1 = search_for_named_library(libname, secure, _dl_ldsopath, rpnt)) != NULL)
|
|
+ {
|
|
+ return tpnt1;
|
|
+ }
|
|
+
|
|
+
|
|
+ /* Lastly, search the standard list of paths for the library.
|
|
+ This list must exactly match the list in uClibc/ldso/util/ldd.c */
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file, "\tsearching full lib path list\n");
|
|
+#endif
|
|
+ if ((tpnt1 = search_for_named_library(libname, secure,
|
|
+ UCLIBC_RUNTIME_PREFIX "usr/X11R6/lib:"
|
|
+ UCLIBC_RUNTIME_PREFIX "usr/lib:"
|
|
+ UCLIBC_RUNTIME_PREFIX "lib:"
|
|
+ "/usr/lib:"
|
|
+ "/lib", rpnt)
|
|
+ ) != NULL)
|
|
+ {
|
|
+ return tpnt1;
|
|
+ }
|
|
+
|
|
+goof:
|
|
+ /* Well, we shot our wad on that one. All we can do now is punt */
|
|
+ if (_dl_internal_error_number)
|
|
+ _dl_error_number = _dl_internal_error_number;
|
|
+ else
|
|
+ _dl_error_number = LD_ERROR_NOFILE;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(2, "Bummer: could not find '%s'!\n", libname);
|
|
+#endif
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+
|
|
+/*
|
|
+ * Read one ELF library into memory, mmap it into the correct locations and
|
|
+ * add the symbol info to the symbol chain. Perform any relocations that
|
|
+ * are required.
|
|
+ */
|
|
+
|
|
+struct elf_resolve *_dl_load_elf_shared_library(int secure,
|
|
+ struct dyn_elf **rpnt, char *libname)
|
|
+{
|
|
+ ElfW(Ehdr) *epnt;
|
|
+ unsigned long dynamic_addr = 0;
|
|
+ unsigned long dynamic_size = 0;
|
|
+ Elf32_Dyn *dpnt;
|
|
+ struct elf_resolve *tpnt;
|
|
+ ElfW(Phdr) *ppnt;
|
|
+ char *status, *header;
|
|
+ unsigned long dynamic_info[24];
|
|
+ unsigned long *lpnt;
|
|
+ unsigned long libaddr;
|
|
+ unsigned long minvma = 0xffffffff, maxvma = 0;
|
|
+ int i, flags, piclib, infile;
|
|
+
|
|
+ /* If this file is already loaded, skip this step */
|
|
+ tpnt = _dl_check_hashed_files(libname);
|
|
+ if (tpnt) {
|
|
+ if (*rpnt) {
|
|
+ (*rpnt)->next = (struct dyn_elf *) _dl_malloc(sizeof(struct dyn_elf));
|
|
+ _dl_memset((*rpnt)->next, 0, sizeof(struct dyn_elf));
|
|
+ (*rpnt)->next->prev = (*rpnt);
|
|
+ *rpnt = (*rpnt)->next;
|
|
+ (*rpnt)->dyn = tpnt;
|
|
+ tpnt->symbol_scope = _dl_symbol_tables;
|
|
+ }
|
|
+ tpnt->usage_count++;
|
|
+ tpnt->libtype = elf_lib;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(2, "file='%s'; already loaded\n", libname);
|
|
+#endif
|
|
+ return tpnt;
|
|
+ }
|
|
+
|
|
+ /* If we are in secure mode (i.e. a setu/gid binary using LD_PRELOAD),
|
|
+ we don't load the library if it isn't setuid. */
|
|
+
|
|
+ if (secure) {
|
|
+ struct stat st;
|
|
+
|
|
+ if (_dl_stat(libname, &st) || !(st.st_mode & S_ISUID))
|
|
+ return NULL;
|
|
+ }
|
|
+
|
|
+ libaddr = 0;
|
|
+ infile = _dl_open(libname, O_RDONLY);
|
|
+ if (infile < 0) {
|
|
+#if 0
|
|
+ /*
|
|
+ * NO! When we open shared libraries we may search several paths.
|
|
+ * it is inappropriate to generate an error here.
|
|
+ */
|
|
+ _dl_dprintf(2, "%s: can't open '%s'\n", _dl_progname, libname);
|
|
+#endif
|
|
+ _dl_internal_error_number = LD_ERROR_NOFILE;
|
|
+ return NULL;
|
|
+ }
|
|
+
|
|
+ header = _dl_mmap((void *) 0, 4096, PROT_READ | PROT_WRITE,
|
|
+ MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
|
|
+ if (_dl_mmap_check_error(header)) {
|
|
+ _dl_dprintf(2, "%s: can't map '%s'\n", _dl_progname, libname);
|
|
+ _dl_internal_error_number = LD_ERROR_MMAP_FAILED;
|
|
+ _dl_close(infile);
|
|
+ return NULL;
|
|
+ };
|
|
+
|
|
+ _dl_read(infile, header, 4096);
|
|
+ epnt = (ElfW(Ehdr) *) (intptr_t) header;
|
|
+ if (epnt->e_ident[0] != 0x7f ||
|
|
+ epnt->e_ident[1] != 'E' ||
|
|
+ epnt->e_ident[2] != 'L' ||
|
|
+ epnt->e_ident[3] != 'F')
|
|
+ {
|
|
+ _dl_dprintf(2, "%s: '%s' is not an ELF file\n", _dl_progname,
|
|
+ libname);
|
|
+ _dl_internal_error_number = LD_ERROR_NOTELF;
|
|
+ _dl_close(infile);
|
|
+ _dl_munmap(header, 4096);
|
|
+ return NULL;
|
|
+ };
|
|
+
|
|
+ if ((epnt->e_type != ET_DYN) || (epnt->e_machine != MAGIC1
|
|
+#ifdef MAGIC2
|
|
+ && epnt->e_machine != MAGIC2
|
|
+#endif
|
|
+ ))
|
|
+ {
|
|
+ _dl_internal_error_number =
|
|
+ (epnt->e_type != ET_DYN ? LD_ERROR_NOTDYN : LD_ERROR_NOTMAGIC);
|
|
+ _dl_dprintf(2, "%s: '%s' is not an ELF executable for " ELF_TARGET
|
|
+ "\n", _dl_progname, libname);
|
|
+ _dl_close(infile);
|
|
+ _dl_munmap(header, 4096);
|
|
+ return NULL;
|
|
+ };
|
|
+
|
|
+ ppnt = (ElfW(Phdr) *)(intptr_t) & header[epnt->e_phoff];
|
|
+
|
|
+ piclib = 1;
|
|
+ for (i = 0; i < epnt->e_phnum; i++) {
|
|
+
|
|
+ if (ppnt->p_type == PT_DYNAMIC) {
|
|
+ if (dynamic_addr)
|
|
+ _dl_dprintf(2, "%s: '%s' has more than one dynamic section\n",
|
|
+ _dl_progname, libname);
|
|
+ dynamic_addr = ppnt->p_vaddr;
|
|
+ dynamic_size = ppnt->p_filesz;
|
|
+ };
|
|
+
|
|
+ if (ppnt->p_type == PT_LOAD) {
|
|
+ /* See if this is a PIC library. */
|
|
+ if (i == 0 && ppnt->p_vaddr > 0x1000000) {
|
|
+ piclib = 0;
|
|
+ minvma = ppnt->p_vaddr;
|
|
+ }
|
|
+ if (piclib && ppnt->p_vaddr < minvma) {
|
|
+ minvma = ppnt->p_vaddr;
|
|
+ }
|
|
+ if (((unsigned long) ppnt->p_vaddr + ppnt->p_memsz) > maxvma) {
|
|
+ maxvma = ppnt->p_vaddr + ppnt->p_memsz;
|
|
+ }
|
|
+ }
|
|
+ ppnt++;
|
|
+ };
|
|
+
|
|
+ maxvma = (maxvma + ADDR_ALIGN) & ~ADDR_ALIGN;
|
|
+ minvma = minvma & ~0xffffU;
|
|
+
|
|
+ flags = MAP_PRIVATE /*| MAP_DENYWRITE */ ;
|
|
+ if (!piclib)
|
|
+ flags |= MAP_FIXED;
|
|
+
|
|
+ status = (char *) _dl_mmap((char *) (piclib ? 0 : minvma),
|
|
+ maxvma - minvma, PROT_NONE, flags | MAP_ANONYMOUS, -1, 0);
|
|
+ if (_dl_mmap_check_error(status)) {
|
|
+ _dl_dprintf(2, "%s: can't map %s\n", _dl_progname, libname);
|
|
+ _dl_internal_error_number = LD_ERROR_MMAP_FAILED;
|
|
+ _dl_close(infile);
|
|
+ _dl_munmap(header, 4096);
|
|
+ return NULL;
|
|
+ };
|
|
+ libaddr = (unsigned long) status;
|
|
+ flags |= MAP_FIXED;
|
|
+
|
|
+ /* Get the memory to store the library */
|
|
+ ppnt = (ElfW(Phdr) *)(intptr_t) & header[epnt->e_phoff];
|
|
+
|
|
+ for (i = 0; i < epnt->e_phnum; i++) {
|
|
+ if (ppnt->p_type == PT_LOAD) {
|
|
+
|
|
+ /* See if this is a PIC library. */
|
|
+ if (i == 0 && ppnt->p_vaddr > 0x1000000) {
|
|
+ piclib = 0;
|
|
+ /* flags |= MAP_FIXED; */
|
|
+ }
|
|
+
|
|
+
|
|
+
|
|
+ if (ppnt->p_flags & PF_W) {
|
|
+ unsigned long map_size;
|
|
+ char *cpnt;
|
|
+
|
|
+ status = (char *) _dl_mmap((char *) ((piclib ? libaddr : 0) +
|
|
+ (ppnt->p_vaddr & PAGE_ALIGN)), (ppnt->p_vaddr & ADDR_ALIGN)
|
|
+ + ppnt->p_filesz, LXFLAGS(ppnt->p_flags), flags, infile,
|
|
+ ppnt->p_offset & OFFS_ALIGN);
|
|
+
|
|
+ if (_dl_mmap_check_error(status)) {
|
|
+ _dl_dprintf(2, "%s: can't map '%s'\n",
|
|
+ _dl_progname, libname);
|
|
+ _dl_internal_error_number = LD_ERROR_MMAP_FAILED;
|
|
+ _dl_munmap((char *) libaddr, maxvma - minvma);
|
|
+ _dl_close(infile);
|
|
+ _dl_munmap(header, 4096);
|
|
+ return NULL;
|
|
+ };
|
|
+
|
|
+ /* Pad the last page with zeroes. */
|
|
+ cpnt = (char *) (status + (ppnt->p_vaddr & ADDR_ALIGN) +
|
|
+ ppnt->p_filesz);
|
|
+ while (((unsigned long) cpnt) & ADDR_ALIGN)
|
|
+ *cpnt++ = 0;
|
|
+
|
|
+ /* I am not quite sure if this is completely
|
|
+ * correct to do or not, but the basic way that
|
|
+ * we handle bss segments is that we mmap
|
|
+ * /dev/zero if there are any pages left over
|
|
+ * that are not mapped as part of the file */
|
|
+
|
|
+ map_size = (ppnt->p_vaddr + ppnt->p_filesz + ADDR_ALIGN) & PAGE_ALIGN;
|
|
+
|
|
+ if (map_size < ppnt->p_vaddr + ppnt->p_memsz)
|
|
+ status = (char *) _dl_mmap((char *) map_size +
|
|
+ (piclib ? libaddr : 0),
|
|
+ ppnt->p_vaddr + ppnt->p_memsz - map_size,
|
|
+ LXFLAGS(ppnt->p_flags), flags | MAP_ANONYMOUS, -1, 0);
|
|
+ } else
|
|
+ status = (char *) _dl_mmap((char *) (ppnt->p_vaddr & PAGE_ALIGN)
|
|
+ + (piclib ? libaddr : 0), (ppnt->p_vaddr & ADDR_ALIGN) +
|
|
+ ppnt->p_filesz, LXFLAGS(ppnt->p_flags), flags,
|
|
+ infile, ppnt->p_offset & OFFS_ALIGN);
|
|
+ if (_dl_mmap_check_error(status)) {
|
|
+ _dl_dprintf(2, "%s: can't map '%s'\n", _dl_progname, libname);
|
|
+ _dl_internal_error_number = LD_ERROR_MMAP_FAILED;
|
|
+ _dl_munmap((char *) libaddr, maxvma - minvma);
|
|
+ _dl_close(infile);
|
|
+ _dl_munmap(header, 4096);
|
|
+ return NULL;
|
|
+ };
|
|
+
|
|
+ /* if(libaddr == 0 && piclib) {
|
|
+ libaddr = (unsigned long) status;
|
|
+ flags |= MAP_FIXED;
|
|
+ }; */
|
|
+ };
|
|
+ ppnt++;
|
|
+ };
|
|
+ _dl_close(infile);
|
|
+
|
|
+ /* For a non-PIC library, the addresses are all absolute */
|
|
+ if (piclib) {
|
|
+ dynamic_addr += (unsigned long) libaddr;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * OK, the ELF library is now loaded into VM in the correct locations
|
|
+ * The next step is to go through and do the dynamic linking (if needed).
|
|
+ */
|
|
+
|
|
+ /* Start by scanning the dynamic section to get all of the pointers */
|
|
+
|
|
+ if (!dynamic_addr) {
|
|
+ _dl_internal_error_number = LD_ERROR_NODYNAMIC;
|
|
+ _dl_dprintf(2, "%s: '%s' is missing a dynamic section\n",
|
|
+ _dl_progname, libname);
|
|
+ _dl_munmap(header, 4096);
|
|
+ return NULL;
|
|
+ }
|
|
+
|
|
+ dpnt = (Elf32_Dyn *) dynamic_addr;
|
|
+
|
|
+ dynamic_size = dynamic_size / sizeof(Elf32_Dyn);
|
|
+ _dl_memset(dynamic_info, 0, sizeof(dynamic_info));
|
|
+
|
|
+#if defined(__mips__)
|
|
+ {
|
|
+
|
|
+ int indx = 1;
|
|
+ Elf32_Dyn *dpnt = (Elf32_Dyn *) dynamic_addr;
|
|
+
|
|
+ while(dpnt->d_tag) {
|
|
+ dpnt++;
|
|
+ indx++;
|
|
+ }
|
|
+ dynamic_size = indx;
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ {
|
|
+ unsigned long indx;
|
|
+
|
|
+ for (indx = 0; indx < dynamic_size; indx++)
|
|
+ {
|
|
+ if (dpnt->d_tag > DT_JMPREL) {
|
|
+ dpnt++;
|
|
+ continue;
|
|
+ }
|
|
+ dynamic_info[dpnt->d_tag] = dpnt->d_un.d_val;
|
|
+ if (dpnt->d_tag == DT_TEXTREL)
|
|
+ dynamic_info[DT_TEXTREL] = 1;
|
|
+ dpnt++;
|
|
+ };
|
|
+ }
|
|
+
|
|
+ /* If the TEXTREL is set, this means that we need to make the pages
|
|
+ writable before we perform relocations. Do this now. They get set
|
|
+ back again later. */
|
|
+
|
|
+ if (dynamic_info[DT_TEXTREL]) {
|
|
+#ifndef FORCE_SHAREABLE_TEXT_SEGMENTS
|
|
+ ppnt = (ElfW(Phdr) *)(intptr_t) & header[epnt->e_phoff];
|
|
+ for (i = 0; i < epnt->e_phnum; i++, ppnt++) {
|
|
+ if (ppnt->p_type == PT_LOAD && !(ppnt->p_flags & PF_W))
|
|
+ _dl_mprotect((void *) ((piclib ? libaddr : 0) +
|
|
+ (ppnt->p_vaddr & PAGE_ALIGN)),
|
|
+ (ppnt->p_vaddr & ADDR_ALIGN) + (unsigned long) ppnt->p_filesz,
|
|
+ PROT_READ | PROT_WRITE | PROT_EXEC);
|
|
+ }
|
|
+#else
|
|
+ _dl_dprintf(_dl_debug_file, "Can't modify %s's text section. Use GCC option -fPIC for shared objects, please.\n",libname);
|
|
+ _dl_exit(1);
|
|
+#endif
|
|
+ }
|
|
+
|
|
+ tpnt = _dl_add_elf_hash_table(libname, (char *) libaddr, dynamic_info,
|
|
+ dynamic_addr, dynamic_size);
|
|
+
|
|
+ tpnt->ppnt = (ElfW(Phdr) *)(intptr_t) (tpnt->loadaddr + epnt->e_phoff);
|
|
+ tpnt->n_phent = epnt->e_phnum;
|
|
+
|
|
+ /*
|
|
+ * Add this object into the symbol chain
|
|
+ */
|
|
+ if (*rpnt) {
|
|
+ (*rpnt)->next = (struct dyn_elf *) _dl_malloc(sizeof(struct dyn_elf));
|
|
+ _dl_memset((*rpnt)->next, 0, sizeof(struct dyn_elf));
|
|
+ (*rpnt)->next->prev = (*rpnt);
|
|
+ *rpnt = (*rpnt)->next;
|
|
+ (*rpnt)->dyn = tpnt;
|
|
+ tpnt->symbol_scope = _dl_symbol_tables;
|
|
+ }
|
|
+ tpnt->usage_count++;
|
|
+ tpnt->libtype = elf_lib;
|
|
+
|
|
+ /*
|
|
+ * OK, the next thing we need to do is to insert the dynamic linker into
|
|
+ * the proper entry in the GOT so that the PLT symbols can be properly
|
|
+ * resolved.
|
|
+ */
|
|
+
|
|
+ lpnt = (unsigned long *) dynamic_info[DT_PLTGOT];
|
|
+
|
|
+ if (lpnt) {
|
|
+ lpnt = (unsigned long *) (dynamic_info[DT_PLTGOT] +
|
|
+ ((int) libaddr));
|
|
+ INIT_GOT(lpnt, tpnt);
|
|
+ };
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) {
|
|
+ _dl_dprintf(2, "\n\tfile='%s'; generating link map\n", libname);
|
|
+ _dl_dprintf(2, "\t\tdynamic: %x base: %x size: %x\n",
|
|
+ dynamic_addr, libaddr, dynamic_size);
|
|
+ _dl_dprintf(2, "\t\t entry: %x phdr: %x phnum: %d\n\n",
|
|
+ epnt->e_entry + libaddr, tpnt->ppnt, tpnt->n_phent);
|
|
+
|
|
+ }
|
|
+#endif
|
|
+ _dl_munmap(header, 4096);
|
|
+
|
|
+ return tpnt;
|
|
+}
|
|
+
|
|
+/* Ugly, ugly. Some versions of the SVr4 linker fail to generate COPY
|
|
+ relocations for global variables that are present both in the image and
|
|
+ the shared library. Go through and do it manually. If the images
|
|
+ are guaranteed to be generated by a trustworthy linker, then this
|
|
+ step can be skipped. */
|
|
+
|
|
+int _dl_copy_fixups(struct dyn_elf *rpnt)
|
|
+{
|
|
+ int goof = 0;
|
|
+ struct elf_resolve *tpnt;
|
|
+
|
|
+ if (rpnt->next)
|
|
+ goof += _dl_copy_fixups(rpnt->next);
|
|
+ else
|
|
+ return 0;
|
|
+
|
|
+ tpnt = rpnt->dyn;
|
|
+
|
|
+ if (tpnt->init_flag & COPY_RELOCS_DONE)
|
|
+ return goof;
|
|
+ tpnt->init_flag |= COPY_RELOCS_DONE;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file,"\nrelocation copy fixups: %s", tpnt->libname);
|
|
+#endif
|
|
+
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ goof += _dl_parse_copy_information(rpnt,
|
|
+ tpnt->dynamic_info[DT_RELA], tpnt->dynamic_info[DT_RELASZ], 0);
|
|
+
|
|
+#else
|
|
+ goof += _dl_parse_copy_information(rpnt, tpnt->dynamic_info[DT_REL],
|
|
+ tpnt->dynamic_info[DT_RELSZ], 0);
|
|
+
|
|
+#endif
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file,"\nrelocation copy fixups: %s; finished\n\n", tpnt->libname);
|
|
+#endif
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+/* Minimal printf which handles only %s, %d, and %x */
|
|
+void _dl_dprintf(int fd, const char *fmt, ...)
|
|
+{
|
|
+ int num;
|
|
+ va_list args;
|
|
+ char *start, *ptr, *string;
|
|
+ static char *buf;
|
|
+
|
|
+ buf = _dl_mmap((void *) 0, 4096, PROT_READ | PROT_WRITE,
|
|
+ MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
|
|
+ if (_dl_mmap_check_error(buf)) {
|
|
+ _dl_dprintf(2, "%s: mmap of a spare page failed!\n", _dl_progname);
|
|
+ _dl_exit(20);
|
|
+ }
|
|
+
|
|
+ start = ptr = buf;
|
|
+
|
|
+ if (!fmt)
|
|
+ return;
|
|
+
|
|
+ if (_dl_strlen(fmt) >= (sizeof(buf) - 1))
|
|
+ _dl_write(fd, "(overflow)\n", 10);
|
|
+
|
|
+ _dl_strcpy(buf, fmt);
|
|
+ va_start(args, fmt);
|
|
+
|
|
+ while (start) {
|
|
+ while (*ptr != '%' && *ptr) {
|
|
+ ptr++;
|
|
+ }
|
|
+
|
|
+ if (*ptr == '%') {
|
|
+ *ptr++ = '\0';
|
|
+ _dl_write(fd, start, _dl_strlen(start));
|
|
+
|
|
+ switch (*ptr++) {
|
|
+ case 's':
|
|
+ string = va_arg(args, char *);
|
|
+
|
|
+ if (!string)
|
|
+ _dl_write(fd, "(null)", 6);
|
|
+ else
|
|
+ _dl_write(fd, string, _dl_strlen(string));
|
|
+ break;
|
|
+
|
|
+ case 'i':
|
|
+ case 'd':
|
|
+ {
|
|
+ char tmp[22];
|
|
+ num = va_arg(args, int);
|
|
+
|
|
+ string = _dl_simple_ltoa(tmp, num);
|
|
+ _dl_write(fd, string, _dl_strlen(string));
|
|
+ break;
|
|
+ }
|
|
+ case 'x':
|
|
+ case 'X':
|
|
+ {
|
|
+ char tmp[22];
|
|
+ num = va_arg(args, int);
|
|
+
|
|
+ string = _dl_simple_ltoahex(tmp, num);
|
|
+ _dl_write(fd, string, _dl_strlen(string));
|
|
+ break;
|
|
+ }
|
|
+ default:
|
|
+ _dl_write(fd, "(null)", 6);
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ start = ptr;
|
|
+ } else {
|
|
+ _dl_write(fd, start, _dl_strlen(start));
|
|
+ start = NULL;
|
|
+ }
|
|
+ }
|
|
+ _dl_munmap(buf, 4096);
|
|
+ return;
|
|
+}
|
|
+
|
|
+char *_dl_strdup(const char *string)
|
|
+{
|
|
+ char *retval;
|
|
+ int len;
|
|
+
|
|
+ len = _dl_strlen(string);
|
|
+ retval = _dl_malloc(len + 1);
|
|
+ _dl_strcpy(retval, string);
|
|
+ return retval;
|
|
+}
|
|
+
|
|
+void *(*_dl_malloc_function) (size_t size) = NULL;
|
|
+void *_dl_malloc(int size)
|
|
+{
|
|
+ void *retval;
|
|
+
|
|
+#if 0
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(2, "malloc: request for %d bytes\n", size);
|
|
+#endif
|
|
+#endif
|
|
+
|
|
+ if (_dl_malloc_function)
|
|
+ return (*_dl_malloc_function) (size);
|
|
+
|
|
+ if (_dl_malloc_addr - _dl_mmap_zero + size > 4096) {
|
|
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
|
|
+ _dl_dprintf(2, "malloc: mmapping more memory\n");
|
|
+#endif
|
|
+ _dl_mmap_zero = _dl_malloc_addr = _dl_mmap((void *) 0, size,
|
|
+ PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
|
|
+ if (_dl_mmap_check_error(_dl_mmap_zero)) {
|
|
+ _dl_dprintf(2, "%s: mmap of a spare page failed!\n", _dl_progname);
|
|
+ _dl_exit(20);
|
|
+ }
|
|
+ }
|
|
+ retval = _dl_malloc_addr;
|
|
+ _dl_malloc_addr += size;
|
|
+
|
|
+ /*
|
|
+ * Align memory to 4 byte boundary. Some platforms require this, others
|
|
+ * simply get better performance.
|
|
+ */
|
|
+ _dl_malloc_addr = (char *) (((unsigned long) _dl_malloc_addr + 3) & ~(3));
|
|
+ return retval;
|
|
+}
|
|
+
|
|
+int _dl_fixup(struct elf_resolve *tpnt, int flag)
|
|
+{
|
|
+ int goof = 0;
|
|
+
|
|
+ if (tpnt->next)
|
|
+ goof += _dl_fixup(tpnt->next, flag);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(_dl_debug_file,"\nrelocation processing: %s", tpnt->libname);
|
|
+#endif
|
|
+
|
|
+ if (tpnt->dynamic_info[DT_REL]) {
|
|
+#ifdef ELF_USES_RELOCA
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(2, "%s: can't handle REL relocation records\n", _dl_progname);
|
|
+#endif
|
|
+ goof++;
|
|
+ return goof;
|
|
+#else
|
|
+ if (tpnt->init_flag & RELOCS_DONE)
|
|
+ return goof;
|
|
+ tpnt->init_flag |= RELOCS_DONE;
|
|
+ goof += _dl_parse_relocation_information(tpnt,
|
|
+ tpnt->dynamic_info[DT_REL],
|
|
+ tpnt->dynamic_info[DT_RELSZ], 0);
|
|
+#endif
|
|
+ }
|
|
+ if (tpnt->dynamic_info[DT_RELA]) {
|
|
+#ifndef ELF_USES_RELOCA
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) _dl_dprintf(2, "%s: can't handle RELA relocation records\n", _dl_progname);
|
|
+#endif
|
|
+ goof++;
|
|
+ return goof;
|
|
+#else
|
|
+ if (tpnt->init_flag & RELOCS_DONE)
|
|
+ return goof;
|
|
+ tpnt->init_flag |= RELOCS_DONE;
|
|
+ goof += _dl_parse_relocation_information(tpnt,
|
|
+ tpnt->dynamic_info[DT_RELA],
|
|
+ tpnt->dynamic_info[DT_RELASZ], 0);
|
|
+#endif
|
|
+ }
|
|
+ if (tpnt->dynamic_info[DT_JMPREL]) {
|
|
+ if (tpnt->init_flag & JMP_RELOCS_DONE)
|
|
+ return goof;
|
|
+ tpnt->init_flag |= JMP_RELOCS_DONE;
|
|
+ if (flag & RTLD_LAZY) {
|
|
+ _dl_parse_lazy_relocation_information(tpnt,
|
|
+ tpnt->dynamic_info[DT_JMPREL],
|
|
+ tpnt->dynamic_info [DT_PLTRELSZ], 0);
|
|
+ } else {
|
|
+ goof += _dl_parse_relocation_information(tpnt,
|
|
+ tpnt->dynamic_info[DT_JMPREL],
|
|
+ tpnt->dynamic_info[DT_PLTRELSZ], 0);
|
|
+ }
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug) {
|
|
+ _dl_dprintf(_dl_debug_file,"\nrelocation processing: %s", tpnt->libname);
|
|
+ _dl_dprintf(_dl_debug_file,"; finished\n\n");
|
|
+ }
|
|
+#endif
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sh/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/sh/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/sh/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sh/boot1_arch.h 2002-11-03 08:12:29.000000000 -0600
|
|
@@ -0,0 +1,22 @@
|
|
+/* Any assmbly language/system dependent hacks needed to setup boot1.c so it
|
|
+ * will work as expected and cope with whatever platform specific wierdness is
|
|
+ * needed for this architecture. */
|
|
+
|
|
+asm("" \
|
|
+" .text\n" \
|
|
+" .globl _dl_boot\n" \
|
|
+"_dl_boot:\n" \
|
|
+" mov r15, r4\n" \
|
|
+" mov.l .L_dl_boot2, r0\n" \
|
|
+" bsrf r0\n" \
|
|
+" add #4, r4\n" \
|
|
+".jmp_loc:\n" \
|
|
+" jmp @r0\n" \
|
|
+" mov #0, r4 !call _start with arg == 0\n" \
|
|
+".L_dl_boot2:\n" \
|
|
+" .long _dl_boot2-.jmp_loc\n" \
|
|
+" .previous\n" \
|
|
+);
|
|
+
|
|
+#define _dl_boot _dl_boot2
|
|
+#define LD_BOOT(X) static void * __attribute__ ((unused)) _dl_boot (X)
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sh/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/sh/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/sh/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sh/elfinterp.c 2003-09-11 05:26:16.000000000 -0500
|
|
@@ -0,0 +1,427 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* SuperH ELF shared library loader suppport
|
|
+ *
|
|
+ * Copyright (C) 2002, Stefan Allius <allius@atecom.com> and
|
|
+ * Eddie C. Dost <ecd@atecom.com>
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char *_dl_reltypes_tab[] =
|
|
+{
|
|
+ [0] "R_SH_NONE", "R_SH_DIR32", "R_SH_REL32", "R_SH_DIR8WPN",
|
|
+ [4] "R_SH_IND12W", "R_SH_DIR8WPL", "R_SH_DIR8WPZ", "R_SH_DIR8BP",
|
|
+ [8] "R_SH_DIR8W", "R_SH_DIR8L",
|
|
+ [25] "R_SH_SWITCH16","R_SH_SWITCH32","R_SH_USES",
|
|
+ [28] "R_SH_COUNT", "R_SH_ALIGN", "R_SH_CODE", "R_SH_DATA",
|
|
+ [32] "R_SH_LABEL", "R_SH_SWITCH8", "R_SH_GNU_VTINHERIT","R_SH_GNU_VTENTRY",
|
|
+[160] "R_SH_GOT32", "R_SH_PLT32", "R_SH_COPY", "R_SH_GLOB_DAT",
|
|
+[164] "R_SH_JMP_SLOT","R_SH_RELATIVE","R_SH_GOTOFF", "R_SH_GOTPC",
|
|
+};
|
|
+
|
|
+static const char *
|
|
+_dl_reltypes(int type)
|
|
+{
|
|
+ static char buf[22];
|
|
+ const char *str;
|
|
+
|
|
+ if (type >= (int)(sizeof (_dl_reltypes_tab)/sizeof(_dl_reltypes_tab[0])) ||
|
|
+ NULL == (str = _dl_reltypes_tab[type]))
|
|
+ {
|
|
+ str =_dl_simple_ltoa( buf, (unsigned long)(type));
|
|
+ }
|
|
+ return str;
|
|
+}
|
|
+
|
|
+static
|
|
+void debug_sym(Elf32_Sym *symtab,char *strtab,int symtab_index)
|
|
+{
|
|
+ if(_dl_debug_symbols)
|
|
+ {
|
|
+ if(symtab_index){
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\tvalue=%x\tsize=%x\tinfo=%x\tother=%x\tshndx=%x",
|
|
+ strtab + symtab[symtab_index].st_name,
|
|
+ symtab[symtab_index].st_value,
|
|
+ symtab[symtab_index].st_size,
|
|
+ symtab[symtab_index].st_info,
|
|
+ symtab[symtab_index].st_other,
|
|
+ symtab[symtab_index].st_shndx);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+static void debug_reloc(Elf32_Sym *symtab,char *strtab, ELF_RELOC *rpnt)
|
|
+{
|
|
+ if(_dl_debug_reloc)
|
|
+ {
|
|
+ int symtab_index;
|
|
+ const char *sym;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ sym = symtab_index ? strtab + symtab[symtab_index].st_name : "sym=0x0";
|
|
+
|
|
+ if(_dl_debug_symbols)
|
|
+ _dl_dprintf(_dl_debug_file, "\n\t");
|
|
+ else
|
|
+ _dl_dprintf(_dl_debug_file, "\n%s\n\t", sym);
|
|
+
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\taddend=%x",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset,
|
|
+ rpnt->r_addend);
|
|
+#else
|
|
+ _dl_dprintf(_dl_debug_file, "%s\toffset=%x\n",
|
|
+ _dl_reltypes(ELF32_R_TYPE(rpnt->r_info)),
|
|
+ rpnt->r_offset);
|
|
+#endif
|
|
+ }
|
|
+}
|
|
+#endif
|
|
+
|
|
+/* Program to load an ELF binary on a linux system, and run it.
|
|
+ References to symbols in sharable libraries can be resolved by either
|
|
+ an ELF sharable library or a linux style of shared library. */
|
|
+
|
|
+/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
|
|
+ I ever taken any courses on internals. This program was developed using
|
|
+ information available through the book "UNIX SYSTEM V RELEASE 4,
|
|
+ Programmers guide: Ansi C and Programming Support Tools", which did
|
|
+ a more than adequate job of explaining everything required to get this
|
|
+ working. */
|
|
+
|
|
+extern int _dl_linux_resolve(void);
|
|
+
|
|
+unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry)
|
|
+{
|
|
+ int reloc_type;
|
|
+ ELF_RELOC *this_reloc;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ int symtab_index;
|
|
+ char *rel_addr;
|
|
+ char *new_addr;
|
|
+ char **got_addr;
|
|
+ unsigned long instr_addr;
|
|
+ char *symname;
|
|
+
|
|
+ rel_addr = (char *) (tpnt->dynamic_info[DT_JMPREL] + tpnt->loadaddr);
|
|
+
|
|
+ this_reloc = (ELF_RELOC *)(intptr_t)(rel_addr + reloc_entry);
|
|
+ reloc_type = ELF32_R_TYPE(this_reloc->r_info);
|
|
+ symtab_index = ELF32_R_SYM(this_reloc->r_info);
|
|
+
|
|
+ symtab = (Elf32_Sym *)(intptr_t) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (reloc_type != R_SH_JMP_SLOT) {
|
|
+ _dl_dprintf(2, "%s: Incorrect relocation type in jump relocations\n",
|
|
+ _dl_progname);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+
|
|
+ /* Address of jump instruction to fix up */
|
|
+ instr_addr = ((unsigned long) this_reloc->r_offset +
|
|
+ (unsigned long) tpnt->loadaddr);
|
|
+ got_addr = (char **) instr_addr;
|
|
+
|
|
+
|
|
+ /* Get the address of the GOT entry */
|
|
+ new_addr = _dl_find_hash(symname, tpnt->symbol_scope, tpnt, resolver);
|
|
+ if (!new_addr) {
|
|
+ new_addr = _dl_find_hash(symname, NULL, NULL, resolver);
|
|
+ if (new_addr) {
|
|
+ return (unsigned long) new_addr;
|
|
+ }
|
|
+
|
|
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n", _dl_progname, symname);
|
|
+ _dl_exit(1);
|
|
+ }
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if ((unsigned long) got_addr < 0x20000000)
|
|
+ {
|
|
+ if (_dl_debug_bindings)
|
|
+ {
|
|
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s", symname);
|
|
+ if(_dl_debug_detail) _dl_dprintf(_dl_debug_file,
|
|
+ "\n\tpatched %x ==> %x @ %x\n", *got_addr, new_addr, got_addr);
|
|
+ }
|
|
+ }
|
|
+ if (!_dl_debug_nofixups) {
|
|
+ *got_addr = new_addr;
|
|
+ }
|
|
+#else
|
|
+ *got_addr = new_addr;
|
|
+#endif
|
|
+
|
|
+ return (unsigned long) new_addr;
|
|
+}
|
|
+
|
|
+
|
|
+static int
|
|
+_dl_parse(struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ unsigned long rel_addr, unsigned long rel_size,
|
|
+ int (*reloc_fnc) (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab))
|
|
+{
|
|
+ unsigned int i;
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ ELF_RELOC *rpnt;
|
|
+ int symtab_index;
|
|
+ /* Now parse the relocation information */
|
|
+
|
|
+ rpnt = (ELF_RELOC *)(intptr_t) (rel_addr + tpnt->loadaddr);
|
|
+ rel_size = rel_size / sizeof(ELF_RELOC);
|
|
+
|
|
+ symtab = (Elf32_Sym *)(intptr_t) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for (i = 0; i < rel_size; i++, rpnt++) {
|
|
+ int res;
|
|
+
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+
|
|
+ /* When the dynamic linker bootstrapped itself, it resolved some symbols.
|
|
+ Make sure we do not do them again */
|
|
+ if (!symtab_index && tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+ if (symtab_index && tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ debug_sym(symtab,strtab,symtab_index);
|
|
+ debug_reloc(symtab,strtab,rpnt);
|
|
+#endif
|
|
+
|
|
+ res = reloc_fnc (tpnt, scope, rpnt, symtab, strtab);
|
|
+
|
|
+ if (res==0) continue;
|
|
+
|
|
+ _dl_dprintf(2, "\n%s: ",_dl_progname);
|
|
+
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "symbol '%s': ", strtab + symtab[symtab_index].st_name);
|
|
+
|
|
+ if (res <0)
|
|
+ {
|
|
+ int reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "can't handle reloc type %s\n ", _dl_reltypes(reloc_type));
|
|
+#else
|
|
+ _dl_dprintf(2, "can't handle reloc type %x\n", reloc_type);
|
|
+#endif
|
|
+ _dl_exit(-res);
|
|
+ }
|
|
+ else if (res >0)
|
|
+ {
|
|
+ _dl_dprintf(2, "can't resolve symbol\n");
|
|
+ return res;
|
|
+ }
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
+static int
|
|
+_dl_do_reloc (struct elf_resolve *tpnt,struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ char *symname;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (symtab_index) {
|
|
+
|
|
+
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope,
|
|
+ (reloc_type == R_SH_JMP_SLOT ? tpnt : NULL), symbolrel);
|
|
+
|
|
+ /*
|
|
+ * We want to allow undefined references to weak symbols - this might
|
|
+ * have been intentional. We should not be linking local symbols
|
|
+ * here, so all bases should be covered.
|
|
+ */
|
|
+ if (!symbol_addr && ELF32_ST_BIND(symtab[symtab_index].st_info) == STB_GLOBAL) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "\tglobal symbol '%s' already defined in '%s'\n",
|
|
+ symname, tpnt->libname);
|
|
+#endif
|
|
+ return 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+ switch (reloc_type) {
|
|
+ case R_SH_NONE:
|
|
+ break;
|
|
+ case R_SH_COPY:
|
|
+ /* handled later on */
|
|
+ break;
|
|
+ case R_SH_DIR32:
|
|
+ case R_SH_GLOB_DAT:
|
|
+ case R_SH_JMP_SLOT:
|
|
+ *reloc_addr = symbol_addr + rpnt->r_addend;
|
|
+ break;
|
|
+ case R_SH_REL32:
|
|
+ *reloc_addr = symbol_addr + rpnt->r_addend -
|
|
+ (unsigned long) reloc_addr;
|
|
+ break;
|
|
+ case R_SH_RELATIVE:
|
|
+ *reloc_addr = (unsigned long) tpnt->loadaddr + rpnt->r_addend;
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /*call _dl_exit(1) */
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+
|
|
+static int
|
|
+_dl_do_lazy_reloc (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ unsigned long *reloc_addr;
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ unsigned long old_val;
|
|
+#endif
|
|
+ (void)scope;
|
|
+ (void)symtab;
|
|
+ (void)strtab;
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ old_val = *reloc_addr;
|
|
+#endif
|
|
+ switch (reloc_type) {
|
|
+ case R_SH_NONE:
|
|
+ break;
|
|
+ case R_SH_JMP_SLOT:
|
|
+ *reloc_addr += (unsigned long) tpnt->loadaddr;
|
|
+ break;
|
|
+ default:
|
|
+ return -1; /*call _dl_exit(1) */
|
|
+ }
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_reloc && _dl_debug_detail)
|
|
+ _dl_dprintf(_dl_debug_file, "\tpatched: %x ==> %x @ %x", old_val, *reloc_addr, reloc_addr);
|
|
+#endif
|
|
+ return 0;
|
|
+
|
|
+}
|
|
+
|
|
+/* This is done as a separate step, because there are cases where
|
|
+ information is first copied and later initialized. This results in
|
|
+ the wrong information being copied. Someone at Sun was complaining about
|
|
+ a bug in the handling of _COPY by SVr4, and this may in fact be what he
|
|
+ was talking about. Sigh. */
|
|
+
|
|
+/* No, there are cases where the SVr4 linker fails to emit COPY relocs
|
|
+ at all */
|
|
+static int
|
|
+_dl_do_copy (struct elf_resolve *tpnt, struct dyn_elf *scope,
|
|
+ ELF_RELOC *rpnt, Elf32_Sym *symtab, char *strtab)
|
|
+{
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ unsigned long *reloc_addr;
|
|
+ unsigned long symbol_addr;
|
|
+ int goof = 0;
|
|
+ char*symname;
|
|
+
|
|
+ reloc_addr = (unsigned long *)(intptr_t) (tpnt->loadaddr + (unsigned long) rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ if (reloc_type != R_SH_COPY)
|
|
+ return 0;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ symname = strtab + symtab[symtab_index].st_name;
|
|
+
|
|
+ if (symtab_index) {
|
|
+
|
|
+ symbol_addr = (unsigned long) _dl_find_hash(symname, scope, NULL, copyrel);
|
|
+ if (!symbol_addr) goof++;
|
|
+ }
|
|
+ if (!goof) {
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if(_dl_debug_move)
|
|
+ _dl_dprintf(_dl_debug_file,"\n%s move %x bytes from %x to %x",
|
|
+ symname, symtab[symtab_index].st_size,
|
|
+ symbol_addr, symtab[symtab_index].st_value);
|
|
+#endif
|
|
+ _dl_memcpy((char *) symtab[symtab_index].st_value,
|
|
+ (char *) symbol_addr, symtab[symtab_index].st_size);
|
|
+ }
|
|
+
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+
|
|
+void _dl_parse_lazy_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ (void)_dl_parse(tpnt, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_relocation_information(struct elf_resolve *tpnt,
|
|
+ unsigned long rel_addr, unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ return _dl_parse(tpnt, tpnt->symbol_scope, rel_addr, rel_size, _dl_do_reloc);
|
|
+}
|
|
+
|
|
+int _dl_parse_copy_information(struct dyn_elf *xpnt, unsigned long rel_addr,
|
|
+ unsigned long rel_size, int type)
|
|
+{
|
|
+ (void) type;
|
|
+ return _dl_parse(xpnt->dyn, xpnt->next, rel_addr, rel_size, _dl_do_copy);
|
|
+}
|
|
+
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sh/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/sh/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/sh/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sh/ld_syscalls.h 2002-08-09 07:20:19.000000000 -0500
|
|
@@ -0,0 +1,7 @@
|
|
+/* Define the __set_errno macro as nothing so that we don't bother
|
|
+ * setting errno, which is important since we make system calls
|
|
+ * before the errno symbol is dynamicly linked. */
|
|
+
|
|
+#define __set_errno(X) {(void)(X);}
|
|
+#include "sys/syscall.h"
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sh/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/sh/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/sh/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sh/ld_sysdep.h 2002-11-07 20:18:16.000000000 -0600
|
|
@@ -0,0 +1,144 @@
|
|
+/*
|
|
+ * Various assmbly language/system dependent hacks that are required
|
|
+ * so that we can minimize the amount of platform specific code.
|
|
+ */
|
|
+
|
|
+/*
|
|
+ * Define this if the system uses RELOCA.
|
|
+ */
|
|
+#define ELF_USES_RELOCA
|
|
+
|
|
+/*
|
|
+ * Get a pointer to the argv array. On many platforms this can be just
|
|
+ * the address if the first argument, on other platforms we need to
|
|
+ * do something a little more subtle here.
|
|
+ */
|
|
+#define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long*) ARGS)
|
|
+
|
|
+/*
|
|
+ * Initialization sequence for a GOT.
|
|
+ */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) \
|
|
+{ \
|
|
+ GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
|
|
+ GOT_BASE[1] = (unsigned long) (MODULE); \
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform a relocation. This is only used when
|
|
+ * bootstrapping the dynamic loader. RELP is the relocation that we
|
|
+ * are performing, REL is the pointer to the address we are relocating.
|
|
+ * SYMBOL is the symbol involved in the relocation, and LOAD is the
|
|
+ * load address.
|
|
+ */
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
|
|
+ switch(ELF32_R_TYPE((RELP)->r_info)){ \
|
|
+ case R_SH_REL32: \
|
|
+ *(REL) = (SYMBOL) + (RELP)->r_addend \
|
|
+ - (unsigned long)(REL); \
|
|
+ break; \
|
|
+ case R_SH_DIR32: \
|
|
+ case R_SH_GLOB_DAT: \
|
|
+ case R_SH_JMP_SLOT: \
|
|
+ *(REL) = (SYMBOL) + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ case R_SH_RELATIVE: \
|
|
+ *(REL) = (LOAD) + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ case R_SH_NONE: \
|
|
+ break; \
|
|
+ default: \
|
|
+ SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc type "); \
|
|
+ SEND_NUMBER_STDERR(ELF32_R_TYPE((RELP)->r_info), 1); \
|
|
+ SEND_STDERR("REL, SYMBOL, LOAD: "); \
|
|
+ SEND_ADDRESS_STDERR(REL, 0); \
|
|
+ SEND_STDERR(", "); \
|
|
+ SEND_ADDRESS_STDERR(SYMBOL, 0); \
|
|
+ SEND_STDERR(", "); \
|
|
+ SEND_ADDRESS_STDERR(LOAD, 1); \
|
|
+ _dl_exit(1); \
|
|
+ }
|
|
+
|
|
+
|
|
+/*
|
|
+ * Transfer control to the user's application, once the dynamic loader
|
|
+ * is done. This routine has to exit the current function, then
|
|
+ * call the _dl_elf_main function.
|
|
+ */
|
|
+
|
|
+#define START() return _dl_elf_main;
|
|
+
|
|
+
|
|
+
|
|
+/* Here we define the magic numbers that this dynamic loader should accept */
|
|
+
|
|
+#define MAGIC1 EM_SH
|
|
+#undef MAGIC2
|
|
+/* Used for error messages */
|
|
+#define ELF_TARGET "sh"
|
|
+
|
|
+struct elf_resolve;
|
|
+extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry);
|
|
+
|
|
+static __inline__ unsigned int
|
|
+_dl_urem(unsigned int n, unsigned int base)
|
|
+{
|
|
+ int res;
|
|
+
|
|
+ __asm__ (""\
|
|
+ "mov #0, r0\n\t" \
|
|
+ "div0u\n\t" \
|
|
+ "" \
|
|
+ "! get one bit from the msb of the numerator into the T\n\t" \
|
|
+ "! bit and divide it by whats in %2. Put the answer bit\n\t" \
|
|
+ "! into the T bit so it can come out again at the bottom\n\t" \
|
|
+ "" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1 ; div1 %2, r0\n\t" \
|
|
+ "rotcl %1\n\t"
|
|
+ : "=r" (res)
|
|
+ : "0" (n), "r" (base)
|
|
+ : "r0","cc");
|
|
+
|
|
+ return n - (base * res);
|
|
+}
|
|
+
|
|
+#define do_rem(result, n, base) ((result) = _dl_urem((n), (base)))
|
|
+
|
|
+/* 4096 bytes alignment */
|
|
+#define PAGE_ALIGN 0xfffff000
|
|
+#define ADDR_ALIGN 0xfff
|
|
+#define OFFS_ALIGN 0x7ffff000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sh/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/sh/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/sh/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sh/resolve.S 2002-11-07 20:18:16.000000000 -0600
|
|
@@ -0,0 +1,91 @@
|
|
+/*
|
|
+ * Stolen from glibc-2.2.2 by Eddie C. Dost <ecd@atecom.com>
|
|
+ */
|
|
+
|
|
+ .text
|
|
+ .globl _dl_linux_resolver
|
|
+ .globl _dl_linux_resolve
|
|
+ .type _dl_linux_resolve, @function
|
|
+ .balign 16
|
|
+_dl_linux_resolve:
|
|
+ mov.l r3, @-r15
|
|
+ mov.l r4, @-r15
|
|
+ mov.l r5, @-r15
|
|
+ mov.l r6, @-r15
|
|
+ mov.l r7, @-r15
|
|
+ mov.l r12, @-r15
|
|
+ movt r3 ! Save T flag
|
|
+ mov.l r3, @-r15
|
|
+
|
|
+#ifdef HAVE_FPU
|
|
+ sts.l fpscr, @-r15
|
|
+ mov #8,r3
|
|
+ swap.w r3, r3
|
|
+ lds r3, fpscr
|
|
+ fmov.s fr11, @-r15
|
|
+ fmov.s fr10, @-r15
|
|
+ fmov.s fr9, @-r15
|
|
+ fmov.s fr8, @-r15
|
|
+ fmov.s fr7, @-r15
|
|
+ fmov.s fr6, @-r15
|
|
+ fmov.s fr5, @-r15
|
|
+ fmov.s fr4, @-r15
|
|
+#endif
|
|
+ sts.l pr, @-r15
|
|
+/* Note - The PLT entries have been "optimised" not to use r2. r2 is used by
|
|
+ GCC to return the address of large structures, so it should not be
|
|
+ corrupted here. This does mean however, that those PLTs does not conform
|
|
+ to the SH PIC ABI. That spec says that r0 contains the type of the PLT
|
|
+ and r2 contains the GOT id. The GNU Plt version stores the GOT id in r0 and
|
|
+ ignores the type. We can easily detect this difference however,
|
|
+ since the type will always be 0 or 8, and the GOT ids will always be
|
|
+ greater than or equal to 12.
|
|
+
|
|
+ Found in binutils/bfd/elf32-sh.c by Stefan Allius <allius@atecom.com>
|
|
+ */
|
|
+ mov #8 ,r5
|
|
+ cmp/gt r5, r0
|
|
+ bt 1f
|
|
+ mov r2, r0 ! link map address in r2 (SH PIC ABI)
|
|
+1:
|
|
+ mov r0, r4 ! link map address in r0 (GNUs PLT)
|
|
+ mova .LG, r0
|
|
+ mov.l .LG, r5
|
|
+ add r5, r0
|
|
+ mov.l 3f, r5
|
|
+ mov.l @(r0, r5),r5
|
|
+ jsr @r5
|
|
+ mov r1, r5 ! Reloc offset
|
|
+
|
|
+ lds.l @r15+, pr ! Get register content back
|
|
+
|
|
+#ifdef HAVE_FPU
|
|
+ fmov.s @r15+, fr4
|
|
+ fmov.s @r15+, fr5
|
|
+ fmov.s @r15+, fr6
|
|
+ fmov.s @r15+, fr7
|
|
+ fmov.s @r15+, fr8
|
|
+ fmov.s @r15+, fr9
|
|
+ fmov.s @r15+, fr10
|
|
+ fmov.s @r15+, fr11
|
|
+ lds.l @r15+, fpscr
|
|
+#endif
|
|
+
|
|
+ mov.l @r15+, r3
|
|
+ shal r3 ! Load T flag
|
|
+ mov.l @r15+, r12
|
|
+ mov.l @r15+, r7
|
|
+ mov.l @r15+, r6
|
|
+ mov.l @r15+, r5
|
|
+ mov.l @r15+, r4
|
|
+ jmp @r0 ! Jump to function address
|
|
+ mov.l @r15+, r3
|
|
+
|
|
+ .balign 4
|
|
+
|
|
+3:
|
|
+ .long _dl_linux_resolver@GOT
|
|
+.LG:
|
|
+ .long _GLOBAL_OFFSET_TABLE_
|
|
+ .size _dl_linux_resolve, . - _dl_linux_resolve
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sparc/boot1_arch.h uClibc.ldso.24/ldso-0.9.24/ldso/sparc/boot1_arch.h
|
|
--- uClibc/ldso-0.9.24/ldso/sparc/boot1_arch.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sparc/boot1_arch.h 2002-08-08 09:35:49.000000000 -0500
|
|
@@ -0,0 +1,7 @@
|
|
+/* Any assmbly language/system dependent hacks needed to setup boot1.c so it
|
|
+ * will work as expected and cope with whatever platform specific wierdness is
|
|
+ * needed for this architecture. See arm/boot1_arch.h for an example of what
|
|
+ * can be done.
|
|
+ */
|
|
+
|
|
+#define LD_BOOT(X) void _dl_boot (X)
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sparc/elfinterp.c uClibc.ldso.24/ldso-0.9.24/ldso/sparc/elfinterp.c
|
|
--- uClibc/ldso-0.9.24/ldso/sparc/elfinterp.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sparc/elfinterp.c 2002-11-05 12:21:12.000000000 -0600
|
|
@@ -0,0 +1,357 @@
|
|
+/* vi: set sw=4 ts=4: */
|
|
+/* sparc ELF shared library loader suppport
|
|
+ *
|
|
+ * Copyright (c) 1994-2000 Eric Youngdale, Peter MacDonald,
|
|
+ * David Engel, Hongjiu Lu and Mitch D'Souza
|
|
+ *
|
|
+ * All rights reserved.
|
|
+ *
|
|
+ * Redistribution and use in source and binary forms, with or without
|
|
+ * modification, are permitted provided that the following conditions
|
|
+ * are met:
|
|
+ * 1. Redistributions of source code must retain the above copyright
|
|
+ * notice, this list of conditions and the following disclaimer.
|
|
+ * 2. The name of the above contributors may not be
|
|
+ * used to endorse or promote products derived from this software
|
|
+ * without specific prior written permission.
|
|
+ *
|
|
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
|
|
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
|
|
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
+ * SUCH DAMAGE.
|
|
+ */
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+static const char * _dl_reltypes[] = { "R_SPARC_NONE", "R_SPARC_8",
|
|
+ "R_SPARC_16", "R_SPARC_32", "R_SPARC_DISP8", "R_SPARC_DISP16",
|
|
+ "R_SPARC_DISP32", "R_SPARC_WDISP30", "R_SPARC_WDISP22",
|
|
+ "R_SPARC_HI22", "R_SPARC_22", "R_SPARC_13", "R_SPARC_LO10",
|
|
+ "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22", "R_SPARC_PC10",
|
|
+ "R_SPARC_PC22", "R_SPARC_WPLT30", "R_SPARC_COPY",
|
|
+ "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT", "R_SPARC_RELATIVE",
|
|
+ "R_SPARC_UA32"};
|
|
+#endif
|
|
+
|
|
+/* Program to load an ELF binary on a linux system, and run it.
|
|
+References to symbols in sharable libraries can be resolved by either
|
|
+an ELF sharable library or a linux style of shared library. */
|
|
+
|
|
+/* Disclaimer: I have never seen any AT&T source code for SVr4, nor have
|
|
+ I ever taken any courses on internals. This program was developed using
|
|
+ information available through the book "UNIX SYSTEM V RELEASE 4,
|
|
+ Programmers guide: Ansi C and Programming Support Tools", which did
|
|
+ a more than adequate job of explaining everything required to get this
|
|
+ working. */
|
|
+
|
|
+extern _dl_linux_resolve(void);
|
|
+
|
|
+unsigned int _dl_linux_resolver(unsigned int reloc_entry, unsigned int * plt)
|
|
+{
|
|
+ int reloc_type;
|
|
+ Elf32_Rela * this_reloc;
|
|
+ char * strtab;
|
|
+ Elf32_Sym * symtab;
|
|
+ Elf32_Rela * rel_addr;
|
|
+ struct elf_resolve * tpnt;
|
|
+ int symtab_index;
|
|
+ char * new_addr;
|
|
+ char ** got_addr;
|
|
+ unsigned int instr_addr;
|
|
+ tpnt = (struct elf_resolve *) plt[2];
|
|
+
|
|
+ rel_addr = (Elf32_Rela *) (tpnt->dynamic_info[DT_JMPREL] +
|
|
+ tpnt->loadaddr);
|
|
+
|
|
+ /*
|
|
+ * Generate the correct relocation index into the .rela.plt section.
|
|
+ */
|
|
+ reloc_entry = (reloc_entry >> 12) - 0xc;
|
|
+
|
|
+ this_reloc = (Elf32_Rela *) ((char *) rel_addr + reloc_entry);
|
|
+
|
|
+ reloc_type = ELF32_R_TYPE(this_reloc->r_info);
|
|
+ symtab_index = ELF32_R_SYM(this_reloc->r_info);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = (char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ _dl_dprintf(2, "tpnt = %x\n", tpnt);
|
|
+ _dl_dprintf(2, "reloc = %x\n", this_reloc);
|
|
+ _dl_dprintf(2, "symtab = %x\n", symtab);
|
|
+ _dl_dprintf(2, "strtab = %x\n", strtab);
|
|
+
|
|
+
|
|
+ if (reloc_type != R_SPARC_JMP_SLOT) {
|
|
+ _dl_dprintf(2, "%s: incorrect relocation type in jump relocations (%d)\n",
|
|
+ _dl_progname, reloc_type);
|
|
+ _dl_exit(30);
|
|
+ };
|
|
+
|
|
+ /* Address of jump instruction to fix up */
|
|
+ instr_addr = ((int)this_reloc->r_offset + (int)tpnt->loadaddr);
|
|
+ got_addr = (char **) instr_addr;
|
|
+
|
|
+ _dl_dprintf(2, "symtab_index %d\n", symtab_index);
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if (_dl_debug_symbols) {
|
|
+ _dl_dprintf(2, "Resolving symbol %s\n",
|
|
+ strtab + symtab[symtab_index].st_name);
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ /* Get the address of the GOT entry */
|
|
+ new_addr = _dl_find_hash(strtab + symtab[symtab_index].st_name,
|
|
+ tpnt->symbol_scope, tpnt, resolver);
|
|
+ if(!new_addr) {
|
|
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, strtab + symtab[symtab_index].st_name);
|
|
+ _dl_exit(31);
|
|
+ };
|
|
+
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ if ((unsigned long) got_addr < 0x40000000)
|
|
+ {
|
|
+ if (_dl_debug_bindings)
|
|
+ {
|
|
+ _dl_dprintf(_dl_debug_file, "\nresolve function: %s",
|
|
+ strtab + symtab[symtab_index].st_name);
|
|
+ if(_dl_debug_detail) _dl_dprintf(_dl_debug_file,
|
|
+ "\tpatch %x ==> %x @ %x", *got_addr, new_addr, got_addr);
|
|
+ }
|
|
+ }
|
|
+ if (!_dl_debug_nofixups) {
|
|
+ got_addr[1] = (char *) (0x03000000 | (((unsigned int) new_addr >> 10) & 0x3fffff));
|
|
+ got_addr[2] = (char *) (0x81c06000 | ((unsigned int) new_addr & 0x3ff));
|
|
+ }
|
|
+#else
|
|
+ got_addr[1] = (char *) (0x03000000 | (((unsigned int) new_addr >> 10) & 0x3fffff));
|
|
+ got_addr[2] = (char *) (0x81c06000 | ((unsigned int) new_addr & 0x3ff));
|
|
+#endif
|
|
+
|
|
+ _dl_dprintf(2, "Address = %x\n",new_addr);
|
|
+ _dl_exit(32);
|
|
+
|
|
+ return (unsigned int) new_addr;
|
|
+}
|
|
+
|
|
+void _dl_parse_lazy_relocation_information(struct elf_resolve * tpnt, int rel_addr,
|
|
+ int rel_size, int type){
|
|
+ int i;
|
|
+ char * strtab;
|
|
+ int reloc_type;
|
|
+ int symtab_index;
|
|
+ Elf32_Sym * symtab;
|
|
+ Elf32_Rela * rpnt;
|
|
+ unsigned int * reloc_addr;
|
|
+
|
|
+ /* Now parse the relocation information */
|
|
+ rpnt = (Elf32_Rela *) (rel_addr + tpnt->loadaddr);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = ( char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for(i=0; i< rel_size; i += sizeof(Elf32_Rela), rpnt++){
|
|
+ reloc_addr = (int *) (tpnt->loadaddr + (int)rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+
|
|
+ /* When the dynamic linker bootstrapped itself, it resolved some symbols.
|
|
+ Make sure we do not do them again */
|
|
+ if(!symtab_index && tpnt->libtype == program_interpreter) continue;
|
|
+ if(symtab_index && tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+ switch(reloc_type){
|
|
+ case R_SPARC_NONE:
|
|
+ break;
|
|
+ case R_SPARC_JMP_SLOT:
|
|
+ break;
|
|
+ default:
|
|
+ _dl_dprintf(2, "%s: (LAZY) can't handle reloc type ", _dl_progname);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "%s ", _dl_reltypes[reloc_type]);
|
|
+#endif
|
|
+ if(symtab_index) _dl_dprintf(2, "'%s'\n",
|
|
+ strtab + symtab[symtab_index].st_name);
|
|
+ _dl_exit(33);
|
|
+ };
|
|
+ };
|
|
+}
|
|
+
|
|
+int _dl_parse_relocation_information(struct elf_resolve * tpnt, int rel_addr,
|
|
+ int rel_size, int type){
|
|
+ int i;
|
|
+ char * strtab;
|
|
+ int reloc_type;
|
|
+ int goof = 0;
|
|
+ Elf32_Sym * symtab;
|
|
+ Elf32_Rela * rpnt;
|
|
+ unsigned int * reloc_addr;
|
|
+ unsigned int symbol_addr;
|
|
+ int symtab_index;
|
|
+ /* Now parse the relocation information */
|
|
+
|
|
+ rpnt = (Elf32_Rela *) (rel_addr + tpnt->loadaddr);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = ( char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for(i=0; i< rel_size; i+= sizeof(Elf32_Rela), rpnt++){
|
|
+ reloc_addr = (int *) (tpnt->loadaddr + (int)rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+
|
|
+ if(!symtab_index && tpnt->libtype == program_interpreter) continue;
|
|
+
|
|
+ if(symtab_index) {
|
|
+
|
|
+ if(tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+ symbol_addr = (unsigned int)
|
|
+ _dl_find_hash(strtab + symtab[symtab_index].st_name,
|
|
+ tpnt->symbol_scope,
|
|
+ (reloc_type == R_SPARC_JMP_SLOT ? tpnt : NULL), symbolrel);
|
|
+
|
|
+ if(!symbol_addr &&
|
|
+ ELF32_ST_BIND(symtab [symtab_index].st_info) == STB_GLOBAL) {
|
|
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, strtab + symtab[symtab_index].st_name);
|
|
+ goof++;
|
|
+ };
|
|
+ };
|
|
+ switch(reloc_type){
|
|
+ case R_SPARC_NONE:
|
|
+ break;
|
|
+ case R_SPARC_32:
|
|
+ *reloc_addr = symbol_addr + rpnt->r_addend;
|
|
+ break;
|
|
+ case R_SPARC_DISP32:
|
|
+ *reloc_addr = symbol_addr + rpnt->r_addend - (unsigned int) reloc_addr;
|
|
+ break;
|
|
+ case R_SPARC_GLOB_DAT:
|
|
+ *reloc_addr = symbol_addr + rpnt->r_addend;
|
|
+ break;
|
|
+ case R_SPARC_JMP_SLOT:
|
|
+ reloc_addr[1] = 0x03000000 | ((symbol_addr >> 10) & 0x3fffff);
|
|
+ reloc_addr[2] = 0x81c06000 | (symbol_addr & 0x3ff);
|
|
+ break;
|
|
+ case R_SPARC_RELATIVE:
|
|
+ *reloc_addr += (unsigned int) tpnt->loadaddr + rpnt->r_addend;
|
|
+ break;
|
|
+ case R_SPARC_HI22:
|
|
+ if (!symbol_addr)
|
|
+ symbol_addr = tpnt->loadaddr + rpnt->r_addend;
|
|
+ else
|
|
+ symbol_addr += rpnt->r_addend;
|
|
+ *reloc_addr = (*reloc_addr & 0xffc00000)|(symbol_addr >> 10);
|
|
+ break;
|
|
+ case R_SPARC_LO10:
|
|
+ if (!symbol_addr)
|
|
+ symbol_addr = tpnt->loadaddr + rpnt->r_addend;
|
|
+ else
|
|
+ symbol_addr += rpnt->r_addend;
|
|
+ *reloc_addr = (*reloc_addr & ~0x3ff)|(symbol_addr & 0x3ff);
|
|
+ break;
|
|
+ case R_SPARC_WDISP30:
|
|
+ *reloc_addr = (*reloc_addr & 0xc0000000)|
|
|
+ ((symbol_addr - (unsigned int) reloc_addr) >> 2);
|
|
+ break;
|
|
+ case R_SPARC_COPY:
|
|
+#if 0 /* This one is done later */
|
|
+ _dl_dprintf(2, "Doing copy for symbol ");
|
|
+ if(symtab_index) _dl_dprintf(2, strtab + symtab[symtab_index].st_name);
|
|
+ _dl_dprintf(2, "\n");
|
|
+ _dl_memcpy((void *) symtab[symtab_index].st_value,
|
|
+ (void *) symbol_addr,
|
|
+ symtab[symtab_index].st_size);
|
|
+#endif
|
|
+ break;
|
|
+ default:
|
|
+ _dl_dprintf(2, "%s: can't handle reloc type ", _dl_progname);
|
|
+#if defined (__SUPPORT_LD_DEBUG__)
|
|
+ _dl_dprintf(2, "%s ", _dl_reltypes[reloc_type]);
|
|
+#endif
|
|
+ if (symtab_index)
|
|
+ _dl_dprintf(2, "'%s'\n", strtab + symtab[symtab_index].st_name);
|
|
+ _dl_exit(34);
|
|
+ };
|
|
+
|
|
+ };
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+
|
|
+/* This is done as a separate step, because there are cases where
|
|
+ information is first copied and later initialized. This results in
|
|
+ the wrong information being copied. Someone at Sun was complaining about
|
|
+ a bug in the handling of _COPY by SVr4, and this may in fact be what he
|
|
+ was talking about. Sigh. */
|
|
+
|
|
+/* No, there are cases where the SVr4 linker fails to emit COPY relocs
|
|
+ at all */
|
|
+
|
|
+int _dl_parse_copy_information(struct dyn_elf * xpnt, int rel_addr,
|
|
+ int rel_size, int type)
|
|
+{
|
|
+ int i;
|
|
+ char * strtab;
|
|
+ int reloc_type;
|
|
+ int goof = 0;
|
|
+ Elf32_Sym * symtab;
|
|
+ Elf32_Rela * rpnt;
|
|
+ unsigned int * reloc_addr;
|
|
+ unsigned int symbol_addr;
|
|
+ struct elf_resolve *tpnt;
|
|
+ int symtab_index;
|
|
+ /* Now parse the relocation information */
|
|
+
|
|
+ tpnt = xpnt->dyn;
|
|
+
|
|
+ rpnt = (Elf32_Rela *) (rel_addr + tpnt->loadaddr);
|
|
+
|
|
+ symtab = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + tpnt->loadaddr);
|
|
+ strtab = ( char *) (tpnt->dynamic_info[DT_STRTAB] + tpnt->loadaddr);
|
|
+
|
|
+ for(i=0; i< rel_size; i+= sizeof(Elf32_Rela), rpnt++){
|
|
+ reloc_addr = (int *) (tpnt->loadaddr + (int)rpnt->r_offset);
|
|
+ reloc_type = ELF32_R_TYPE(rpnt->r_info);
|
|
+ if(reloc_type != R_SPARC_COPY) continue;
|
|
+ symtab_index = ELF32_R_SYM(rpnt->r_info);
|
|
+ symbol_addr = 0;
|
|
+ if(!symtab_index && tpnt->libtype == program_interpreter) continue;
|
|
+ if(symtab_index) {
|
|
+
|
|
+ if(tpnt->libtype == program_interpreter &&
|
|
+ _dl_symbol(strtab + symtab[symtab_index].st_name))
|
|
+ continue;
|
|
+
|
|
+ symbol_addr = (unsigned int)
|
|
+ _dl_find_hash(strtab + symtab[symtab_index].st_name,
|
|
+ xpnt->next, NULL, copyrel);
|
|
+ if(!symbol_addr) {
|
|
+ _dl_dprintf(2, "%s: can't resolve symbol '%s'\n",
|
|
+ _dl_progname, strtab + symtab[symtab_index].st_name);
|
|
+ goof++;
|
|
+ };
|
|
+ };
|
|
+ if (!goof)
|
|
+ _dl_memcpy((char *) symtab[symtab_index].st_value,
|
|
+ (char *) symbol_addr,
|
|
+ symtab[symtab_index].st_size);
|
|
+ };
|
|
+ return goof;
|
|
+}
|
|
+
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sparc/ld_syscalls.h uClibc.ldso.24/ldso-0.9.24/ldso/sparc/ld_syscalls.h
|
|
--- uClibc/ldso-0.9.24/ldso/sparc/ld_syscalls.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sparc/ld_syscalls.h 2002-03-19 04:43:35.000000000 -0600
|
|
@@ -0,0 +1,155 @@
|
|
+/*
|
|
+ * This file contains the system call macros and syscall
|
|
+ * numbers used by the shared library loader.
|
|
+ */
|
|
+
|
|
+#define __NR_exit 1
|
|
+#define __NR_read 3
|
|
+#define __NR_write 4
|
|
+#define __NR_open 5
|
|
+#define __NR_close 6
|
|
+#define __NR_getuid 24
|
|
+#define __NR_getgid 47
|
|
+#define __NR_geteuid 49
|
|
+#define __NR_getegid 50
|
|
+#define __NR_readlink 58
|
|
+#define __NR_mmap 71
|
|
+#define __NR_munmap 73
|
|
+#define __NR_stat 38
|
|
+#define __NR_mprotect 74
|
|
+
|
|
+/* Here are the macros which define how this platform makes
|
|
+ * system calls. This particular variant does _not_ set
|
|
+ * errno (note how it is disabled in __syscall_return) since
|
|
+ * these will get called before the errno symbol is dynamicly
|
|
+ * linked. */
|
|
+
|
|
+#define _syscall0(type,name) \
|
|
+type name(void) \
|
|
+{ \
|
|
+long __res; \
|
|
+register long __g1 __asm__ ("g1") = __NR_##name; \
|
|
+__asm__ __volatile__ ("t 0x10\n\t" \
|
|
+ "bcc 1f\n\t" \
|
|
+ "mov %%o0, %0\n\t" \
|
|
+ "sub %%g0, %%o0, %0\n\t" \
|
|
+ "1:\n\t" \
|
|
+ : "=r" (__res)\
|
|
+ : "r" (__g1) \
|
|
+ : "o0", "cc"); \
|
|
+if (__res < -255 || __res >= 0) \
|
|
+ return (type) __res; \
|
|
+/*errno = -__res; */\
|
|
+return -1; \
|
|
+}
|
|
+
|
|
+#define _syscall1(type,name,type1,arg1) \
|
|
+type name(type1 arg1) \
|
|
+{ \
|
|
+long __res; \
|
|
+register long __g1 __asm__ ("g1") = __NR_##name; \
|
|
+register long __o0 __asm__ ("o0") = (long)(arg1); \
|
|
+__asm__ __volatile__ ("t 0x10\n\t" \
|
|
+ "bcc 1f\n\t" \
|
|
+ "mov %%o0, %0\n\t" \
|
|
+ "sub %%g0, %%o0, %0\n\t" \
|
|
+ "1:\n\t" \
|
|
+ : "=r" (__res), "=&r" (__o0) \
|
|
+ : "1" (__o0), "r" (__g1) \
|
|
+ : "cc"); \
|
|
+if (__res < -255 || __res >= 0) \
|
|
+ return (type) __res; \
|
|
+/*errno = -__res;*/ \
|
|
+return -1; \
|
|
+}
|
|
+
|
|
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
|
|
+type name(type1 arg1,type2 arg2) \
|
|
+{ \
|
|
+long __res; \
|
|
+register long __g1 __asm__ ("g1") = __NR_##name; \
|
|
+register long __o0 __asm__ ("o0") = (long)(arg1); \
|
|
+register long __o1 __asm__ ("o1") = (long)(arg2); \
|
|
+__asm__ __volatile__ ("t 0x10\n\t" \
|
|
+ "bcc 1f\n\t" \
|
|
+ "mov %%o0, %0\n\t" \
|
|
+ "sub %%g0, %%o0, %0\n\t" \
|
|
+ "1:\n\t" \
|
|
+ : "=r" (__res), "=&r" (__o0) \
|
|
+ : "1" (__o0), "r" (__o1), "r" (__g1) \
|
|
+ : "cc"); \
|
|
+if (__res < -255 || __res >= 0) \
|
|
+ return (type) __res; \
|
|
+/*errno = -__res;*/ \
|
|
+return -1; \
|
|
+}
|
|
+
|
|
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
|
|
+type name(type1 arg1,type2 arg2,type3 arg3) \
|
|
+{ \
|
|
+long __res; \
|
|
+register long __g1 __asm__ ("g1") = __NR_##name; \
|
|
+register long __o0 __asm__ ("o0") = (long)(arg1); \
|
|
+register long __o1 __asm__ ("o1") = (long)(arg2); \
|
|
+register long __o2 __asm__ ("o2") = (long)(arg3); \
|
|
+__asm__ __volatile__ ("t 0x10\n\t" \
|
|
+ "bcc 1f\n\t" \
|
|
+ "mov %%o0, %0\n\t" \
|
|
+ "sub %%g0, %%o0, %0\n\t" \
|
|
+ "1:\n\t" \
|
|
+ : "=r" (__res), "=&r" (__o0) \
|
|
+ : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
|
|
+ : "cc"); \
|
|
+if (__res < -255 || __res>=0) \
|
|
+ return (type) __res; \
|
|
+/*errno = -__res;*/ \
|
|
+return -1; \
|
|
+}
|
|
+
|
|
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
|
|
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
|
|
+{ \
|
|
+long __res; \
|
|
+register long __g1 __asm__ ("g1") = __NR_##name; \
|
|
+register long __o0 __asm__ ("o0") = (long)(arg1); \
|
|
+register long __o1 __asm__ ("o1") = (long)(arg2); \
|
|
+register long __o2 __asm__ ("o2") = (long)(arg3); \
|
|
+register long __o3 __asm__ ("o3") = (long)(arg4); \
|
|
+__asm__ __volatile__ ("t 0x10\n\t" \
|
|
+ "bcc 1f\n\t" \
|
|
+ "mov %%o0, %0\n\t" \
|
|
+ "sub %%g0, %%o0, %0\n\t" \
|
|
+ "1:\n\t" \
|
|
+ : "=r" (__res), "=&r" (__o0) \
|
|
+ : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
|
|
+ : "cc"); \
|
|
+if (__res < -255 || __res>=0) \
|
|
+ return (type) __res; \
|
|
+/*errno = -__res;*/ \
|
|
+return -1; \
|
|
+}
|
|
+
|
|
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
|
|
+ type5,arg5) \
|
|
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
|
|
+{ \
|
|
+long __res; \
|
|
+register long __g1 __asm__ ("g1") = __NR_##name; \
|
|
+register long __o0 __asm__ ("o0") = (long)(arg1); \
|
|
+register long __o1 __asm__ ("o1") = (long)(arg2); \
|
|
+register long __o2 __asm__ ("o2") = (long)(arg3); \
|
|
+register long __o3 __asm__ ("o3") = (long)(arg4); \
|
|
+register long __o4 __asm__ ("o4") = (long)(arg5); \
|
|
+__asm__ __volatile__ ("t 0x10\n\t" \
|
|
+ "bcc 1f\n\t" \
|
|
+ "mov %%o0, %0\n\t" \
|
|
+ "sub %%g0, %%o0, %0\n\t" \
|
|
+ "1:\n\t" \
|
|
+ : "=r" (__res), "=&r" (__o0) \
|
|
+ : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
|
|
+ : "cc"); \
|
|
+if (__res < -255 || __res>=0) \
|
|
+ return (type) __res; \
|
|
+/*errno = -__res; */\
|
|
+return -1; \
|
|
+}
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sparc/ld_sysdep.h uClibc.ldso.24/ldso-0.9.24/ldso/sparc/ld_sysdep.h
|
|
--- uClibc/ldso-0.9.24/ldso/sparc/ld_sysdep.h 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sparc/ld_sysdep.h 2002-08-09 08:05:29.000000000 -0500
|
|
@@ -0,0 +1,112 @@
|
|
+
|
|
+/*
|
|
+ * Various assmbly language/system dependent hacks that are required
|
|
+ * so that we can minimize the amount of platform specific code.
|
|
+ */
|
|
+#define LINUXBIN
|
|
+
|
|
+/*
|
|
+ * Define this if the system uses RELOCA.
|
|
+ */
|
|
+#define ELF_USES_RELOCA
|
|
+
|
|
+/*
|
|
+ * Get a pointer to the argv array. On many platforms this can be just
|
|
+ * the address if the first argument, on other platforms we need to
|
|
+ * do something a little more subtle here. We assume that argc is stored
|
|
+ * at the word just below the argvp that we return here.
|
|
+ */
|
|
+#define GET_ARGV(ARGVP, ARGS) __asm__("\tadd %%fp,68,%0\n" : "=r" (ARGVP));
|
|
+
|
|
+/*
|
|
+ * Initialization sequence for a GOT. For the Sparc, this points to the
|
|
+ * PLT, and we need to initialize a couple of the slots. The PLT should
|
|
+ * look like:
|
|
+ *
|
|
+ * save %sp, -64, %sp
|
|
+ * call _dl_linux_resolve
|
|
+ * nop
|
|
+ * .word implementation_dependent
|
|
+ */
|
|
+#define INIT_GOT(GOT_BASE,MODULE) \
|
|
+{ \
|
|
+ GOT_BASE[0] = 0x9de3bfc0; /* save %sp, -64, %sp */ \
|
|
+ GOT_BASE[1] = 0x40000000 | (((unsigned int) _dl_linux_resolve - (unsigned int) GOT_BASE - 4) >> 2); \
|
|
+ GOT_BASE[2] = 0x01000000; /* nop */ \
|
|
+ GOT_BASE[3] = (int) MODULE; \
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Here is a macro to perform a relocation. This is only used when
|
|
+ * bootstrapping the dynamic loader.
|
|
+ */
|
|
+#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD) \
|
|
+ switch(ELF32_R_TYPE((RELP)->r_info)) { \
|
|
+ case R_SPARC_32: \
|
|
+ *REL = SYMBOL + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ case R_SPARC_GLOB_DAT: \
|
|
+ *REL = SYMBOL + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ case R_SPARC_JMP_SLOT: \
|
|
+ REL[1] = 0x03000000 | ((SYMBOL >> 10) & 0x3fffff); \
|
|
+ REL[2] = 0x81c06000 | (SYMBOL & 0x3ff); \
|
|
+ break; \
|
|
+ case R_SPARC_NONE: \
|
|
+ break; \
|
|
+ case R_SPARC_WDISP30: \
|
|
+ break; \
|
|
+ case R_SPARC_RELATIVE: \
|
|
+ *REL += (unsigned int) LOAD + (RELP)->r_addend; \
|
|
+ break; \
|
|
+ default: \
|
|
+ _dl_exit(1); \
|
|
+ }
|
|
+
|
|
+
|
|
+/*
|
|
+ * Transfer control to the user's application, once the dynamic loader
|
|
+ * is done. The crt calls atexit with $g1 if not null, so we need to
|
|
+ * ensure that it contains NULL.
|
|
+ */
|
|
+
|
|
+#define START() \
|
|
+ __asm__ volatile ( \
|
|
+ "add %%g0,%%g0,%%g1\n\t" \
|
|
+ "jmpl %0, %%o7\n\t" \
|
|
+ "restore %%g0,%%g0,%%g0\n\t" \
|
|
+ : /*"=r" (status) */ : \
|
|
+ "r" (_dl_elf_main): "g1", "o0", "o1")
|
|
+
|
|
+
|
|
+
|
|
+/* Here we define the magic numbers that this dynamic loader should accept */
|
|
+
|
|
+#define MAGIC1 EM_SPARC
|
|
+#undef MAGIC2
|
|
+/* Used for error messages */
|
|
+#define ELF_TARGET "Sparc"
|
|
+
|
|
+#ifndef COMPILE_ASM
|
|
+extern unsigned int _dl_linux_resolver(unsigned int reloc_entry,
|
|
+ unsigned int * i);
|
|
+#endif
|
|
+
|
|
+/*
|
|
+ * Define this if you want a dynamic loader that works on Solaris.
|
|
+ */
|
|
+#define SOLARIS_COMPATIBLE
|
|
+
|
|
+#define do_rem(result, n, base) result = (n % base)
|
|
+
|
|
+/*
|
|
+ * dbx wants the binder to have a specific name. Mustn't disappoint it.
|
|
+ */
|
|
+#ifdef SOLARIS_COMPATIBLE
|
|
+#define _dl_linux_resolve _elf_rtbndr
|
|
+#endif
|
|
+
|
|
+/* 4096 bytes alignment */
|
|
+#define PAGE_ALIGN 0xfffff000
|
|
+#define ADDR_ALIGN 0xfff
|
|
+#define OFFS_ALIGN 0x7ffff000
|
|
diff -urN uClibc/ldso-0.9.24/ldso/sparc/resolve.S uClibc.ldso.24/ldso-0.9.24/ldso/sparc/resolve.S
|
|
--- uClibc/ldso-0.9.24/ldso/sparc/resolve.S 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/ldso/sparc/resolve.S 2002-01-11 13:57:41.000000000 -0600
|
|
@@ -0,0 +1,25 @@
|
|
+/*
|
|
+ * These are various helper routines that are needed to run an ELF image.
|
|
+ */
|
|
+#define COMPILE_ASM
|
|
+#include "ld_sysdep.h"
|
|
+
|
|
+.text
|
|
+ .align 16
|
|
+
|
|
+.globl _dl_linux_resolve
|
|
+_dl_linux_resolve:
|
|
+ /*
|
|
+ * Call the resolver - pass the address of the PLT so that we can
|
|
+ * figure out which module we are in.
|
|
+ */
|
|
+ mov %o7,%o1
|
|
+ call _dl_linux_resolver
|
|
+ mov %g1,%o0
|
|
+
|
|
+ jmpl %o0,%o7
|
|
+ restore
|
|
+.LFE2:
|
|
+
|
|
+ .type _dl_linux_resolve,#function
|
|
+ .size _dl_linux_resolve,.LFE2-_dl_linux_resolve
|
|
diff -urN uClibc/ldso-0.9.24/libdl/.cvsignore uClibc.ldso.24/ldso-0.9.24/libdl/.cvsignore
|
|
--- uClibc/ldso-0.9.24/libdl/.cvsignore 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/libdl/.cvsignore 2001-04-26 11:12:47.000000000 -0500
|
|
@@ -0,0 +1,2 @@
|
|
+libdl.so*
|
|
+
|
|
diff -urN uClibc/ldso-0.9.24/libdl/Makefile uClibc.ldso.24/ldso-0.9.24/libdl/Makefile
|
|
--- uClibc/ldso-0.9.24/libdl/Makefile 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/libdl/Makefile 2004-03-01 03:05:53.000000000 -0600
|
|
@@ -0,0 +1,86 @@
|
|
+# Makefile for uClibc
|
|
+#
|
|
+# Copyright (C) 2000 by Lineo, inc.
|
|
+# Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org>
|
|
+#
|
|
+# This program is free software; you can redistribute it and/or modify it under
|
|
+# the terms of the GNU Library General Public License as published by the Free
|
|
+# Software Foundation; either version 2 of the License, or (at your option) any
|
|
+# later version.
|
|
+#
|
|
+# This program is distributed in the hope that it will be useful, but WITHOUT
|
|
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
+# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
|
|
+# details.
|
|
+#
|
|
+# You should have received a copy of the GNU Library General Public License
|
|
+# along with this program; if not, write to the Free Software Foundation, Inc.,
|
|
+# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
+
|
|
+
|
|
+TOPDIR=../../
|
|
+include $(TOPDIR)Rules.mak
|
|
+
|
|
+XXFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) \
|
|
+ -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
|
|
+ -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)ldso-0.9.24/include -I. -I$(TOPDIR)include
|
|
+
|
|
+ifeq ($(DODEBUG),y)
|
|
+XXFLAGS=$(XWARNINGS) -O0 -g3 $(XARCH_CFLAGS) $(CPU_CFLAGS) \
|
|
+ -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
|
|
+ -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)ldso-0.9.24/include -I. -I$(TOPDIR)include
|
|
+endif
|
|
+
|
|
+XXFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp")
|
|
+XXFLAGS_NOPIC:=$(XXFLAGS)
|
|
+ifeq ($(DOPIC),y)
|
|
+ XXFLAGS += $(PICFLAG) -D__LIBDL_SHARED__
|
|
+endif
|
|
+ifeq ($(strip $(SUPPORT_LD_DEBUG)),y)
|
|
+XXFLAGS+=-D__SUPPORT_LD_DEBUG__
|
|
+endif
|
|
+
|
|
+LIBDL=libdl.a
|
|
+LIBDL_PIC=libdl_pic.a
|
|
+LIBDL_SHARED=libdl.so
|
|
+LIBDL_SHARED_FULLNAME=libdl-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
|
|
+
|
|
+CSRC=dlib.c
|
|
+OBJS=dlib.o
|
|
+PIC_OBJS=dlib_pic.o
|
|
+
|
|
+all: $(OBJS) $(LIBDL) shared
|
|
+
|
|
+$(LIBDL): ar-target
|
|
+
|
|
+ar-target: $(OBJS) $(PIC_OBJS)
|
|
+ $(AR) $(ARFLAGS) $(LIBDL) ../ldso/$(TARGET_ARCH)/resolve.o $(OBJS)
|
|
+ $(AR) $(ARFLAGS) $(LIBDL_PIC) $(PIC_OBJS)
|
|
+ $(INSTALL) -d $(TOPDIR)lib
|
|
+ $(RM) $(TOPDIR)lib/$(LIBDL)
|
|
+ $(INSTALL) -m 644 $(LIBDL) $(TOPDIR)lib
|
|
+
|
|
+
|
|
+dlib.o: dlib.c
|
|
+ $(CC) $(XXFLAGS_NOPIC) -c dlib.c -o dlib.o
|
|
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
|
|
+
|
|
+dlib_pic.o: dlib.c
|
|
+ $(CC) $(XXFLAGS) -c dlib.c -o dlib_pic.o
|
|
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
|
|
+
|
|
+$(OBJ): Makefile
|
|
+
|
|
+shared:
|
|
+ $(LD) $(LDFLAGS) -soname=$(LIBDL_SHARED).$(MAJOR_VERSION) \
|
|
+ -o $(LIBDL_SHARED_FULLNAME) --whole-archive $(LIBDL_PIC) \
|
|
+ --no-whole-archive $(TOPDIR)/libc/misc/internals/interp.o \
|
|
+ -L$(TOPDIR)/lib -lc $(LDADD_LIBFLOAT) $(LIBGCC);
|
|
+ $(INSTALL) -d $(TOPDIR)lib
|
|
+ $(RM) $(TOPDIR)lib/$(LIBDL_SHARED_FULLNAME) $(TOPDIR)lib/$(LIBDL_SHARED).$(MAJOR_VERSION)
|
|
+ $(INSTALL) -m 644 $(LIBDL_SHARED_FULLNAME) $(TOPDIR)lib
|
|
+ $(LN) -sf $(LIBDL_SHARED_FULLNAME) $(TOPDIR)lib/$(LIBDL_SHARED)
|
|
+ $(LN) -sf $(LIBDL_SHARED_FULLNAME) $(TOPDIR)lib/$(LIBDL_SHARED).$(MAJOR_VERSION)
|
|
+
|
|
+clean:
|
|
+ $(RM) .depend $(LIBDL_SHARED)* $(LIBDL_SHARED_FULLNAME) core *.o *.a *.s *.i tmp_make foo *~
|
|
diff -urN uClibc/ldso-0.9.24/libdl/dlib.c uClibc.ldso.24/ldso-0.9.24/libdl/dlib.c
|
|
--- uClibc/ldso-0.9.24/libdl/dlib.c 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/libdl/dlib.c 2004-03-01 03:04:42.000000000 -0600
|
|
@@ -0,0 +1,664 @@
|
|
+/*
|
|
+ * libdl.c
|
|
+ *
|
|
+ * Functions required for dlopen et. al.
|
|
+ */
|
|
+
|
|
+#include <ldso.h>
|
|
+
|
|
+
|
|
+/* The public interfaces */
|
|
+void *dlopen(const char *, int) __attribute__ ((__weak__, __alias__ ("_dlopen")));
|
|
+int dlclose(void *) __attribute__ ((__weak__, __alias__ ("_dlclose")));
|
|
+void *dlsym(void *, const char *) __attribute__ ((__weak__, __alias__ ("_dlsym")));
|
|
+const char *dlerror(void) __attribute__ ((__weak__, __alias__ ("_dlerror")));
|
|
+int dladdr(void *, Dl_info *) __attribute__ ((__weak__, __alias__ ("_dladdr")));
|
|
+void _dlinfo(void);
|
|
+
|
|
+
|
|
+#ifdef __LIBDL_SHARED__
|
|
+/* This is a real hack. We need access to the dynamic linker, but we
|
|
+also need to make it possible to link against this library without any
|
|
+unresolved externals. We provide these weak symbols to make the link
|
|
+possible, but at run time the normal symbols are accessed. */
|
|
+static void __attribute__ ((unused)) foobar(void)
|
|
+{
|
|
+ const char msg[]="libdl library not correctly linked\n";
|
|
+ _dl_write(2, msg, _dl_strlen(msg));
|
|
+ _dl_exit(1);
|
|
+}
|
|
+
|
|
+static int __attribute__ ((unused)) foobar1 = (int) foobar; /* Use as pointer */
|
|
+extern void _dl_dprintf(int, const char *, ...) __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+extern char *_dl_find_hash(const char *, struct dyn_elf *, struct elf_resolve *, enum caller_type)
|
|
+ __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+extern struct elf_resolve * _dl_load_shared_library(int, struct dyn_elf **, struct elf_resolve *, char *)
|
|
+ __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+extern struct elf_resolve * _dl_check_if_named_library_is_loaded(const char *full_libname)
|
|
+ __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+extern int _dl_fixup(struct elf_resolve *tpnt, int lazy)
|
|
+ __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+extern int _dl_copy_fixups(struct dyn_elf * tpnt)
|
|
+ __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+#ifdef __mips__
|
|
+extern void _dl_perform_mips_global_got_relocations(struct elf_resolve *tpnt)
|
|
+ __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+#endif
|
|
+#ifdef USE_CACHE
|
|
+int _dl_map_cache(void) __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+int _dl_unmap_cache(void) __attribute__ ((__weak__, __alias__ ("foobar")));
|
|
+#endif
|
|
+
|
|
+extern struct dyn_elf *_dl_symbol_tables __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern struct dyn_elf *_dl_handles __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern struct elf_resolve *_dl_loaded_modules __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern struct r_debug *_dl_debug_addr __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern unsigned long _dl_error_number __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern void *(*_dl_malloc_function)(size_t) __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+extern char *_dl_debug __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern char *_dl_debug_symbols __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern char *_dl_debug_move __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern char *_dl_debug_reloc __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern char *_dl_debug_detail __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern char *_dl_debug_nofixups __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern char *_dl_debug_bindings __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+extern int _dl_debug_file __attribute__ ((__weak__, __alias__ ("foobar1")));
|
|
+#endif
|
|
+
|
|
+#else /* __LIBDL_SHARED__ */
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+char *_dl_debug = 0;
|
|
+char *_dl_debug_symbols = 0;
|
|
+char *_dl_debug_move = 0;
|
|
+char *_dl_debug_reloc = 0;
|
|
+char *_dl_debug_detail = 0;
|
|
+char *_dl_debug_nofixups = 0;
|
|
+char *_dl_debug_bindings = 0;
|
|
+int _dl_debug_file = 2;
|
|
+#endif
|
|
+char *_dl_library_path = 0;
|
|
+char *_dl_ldsopath = 0;
|
|
+struct r_debug *_dl_debug_addr = NULL;
|
|
+static char *_dl_malloc_addr, *_dl_mmap_zero;
|
|
+#include "../ldso/_dl_progname.h" /* Pull in the name of ld.so */
|
|
+#include "../ldso/hash.c"
|
|
+#define _dl_trace_loaded_objects 0
|
|
+#include "../ldso/readelflib1.c"
|
|
+void *(*_dl_malloc_function) (size_t size);
|
|
+int _dl_fixup(struct elf_resolve *tpnt, int lazy);
|
|
+#endif
|
|
+
|
|
+static int do_dlclose(void *, int need_fini);
|
|
+
|
|
+
|
|
+static const char *dl_error_names[] = {
|
|
+ "",
|
|
+ "File not found",
|
|
+ "Unable to open /dev/zero",
|
|
+ "Not an ELF file",
|
|
+#if defined (__i386__)
|
|
+ "Not i386 binary",
|
|
+#elif defined (__sparc__)
|
|
+ "Not sparc binary",
|
|
+#elif defined (__mc68000__)
|
|
+ "Not m68k binary",
|
|
+#else
|
|
+ "Unrecognized binary type",
|
|
+#endif
|
|
+ "Not an ELF shared library",
|
|
+ "Unable to mmap file",
|
|
+ "No dynamic section",
|
|
+#ifdef ELF_USES_RELOCA
|
|
+ "Unable to process REL relocs",
|
|
+#else
|
|
+ "Unable to process RELA relocs",
|
|
+#endif
|
|
+ "Bad handle",
|
|
+ "Unable to resolve symbol"
|
|
+};
|
|
+
|
|
+static void __attribute__ ((destructor)) dl_cleanup(void)
|
|
+{
|
|
+ struct dyn_elf *d;
|
|
+
|
|
+ for (d = _dl_handles; d; d = d->next_handle)
|
|
+ if (d->dyn->libtype == loaded_file && d->dyn->dynamic_info[DT_FINI]) {
|
|
+ (* ((int (*)(void)) (d->dyn->loadaddr + d->dyn->dynamic_info[DT_FINI]))) ();
|
|
+ d->dyn->dynamic_info[DT_FINI] = 0;
|
|
+ }
|
|
+}
|
|
+
|
|
+void *_dlopen(const char *libname, int flag)
|
|
+{
|
|
+ struct elf_resolve *tpnt, *tfrom, *tcurr;
|
|
+ struct dyn_elf *dyn_chain, *rpnt = NULL;
|
|
+ struct dyn_elf *dpnt;
|
|
+ static int dl_init = 0;
|
|
+ ElfW(Addr) from;
|
|
+ struct elf_resolve *tpnt1;
|
|
+ void (*dl_brk) (void);
|
|
+
|
|
+ /* A bit of sanity checking... */
|
|
+ if (!(flag & (RTLD_LAZY|RTLD_NOW))) {
|
|
+ _dl_error_number = LD_BAD_HANDLE;
|
|
+ return NULL;
|
|
+ }
|
|
+
|
|
+ from = (ElfW(Addr)) __builtin_return_address(0);
|
|
+
|
|
+ /* Have the dynamic linker use the regular malloc function now */
|
|
+ if (!dl_init) {
|
|
+ dl_init++;
|
|
+ _dl_malloc_function = malloc;
|
|
+ }
|
|
+
|
|
+ /* Cover the trivial case first */
|
|
+ if (!libname)
|
|
+ return _dl_symbol_tables;
|
|
+
|
|
+ _dl_map_cache();
|
|
+
|
|
+ /*
|
|
+ * Try and locate the module we were called from - we
|
|
+ * need this so that we get the correct RPATH. Note that
|
|
+ * this is the current behavior under Solaris, but the
|
|
+ * ABI+ specifies that we should only use the RPATH from
|
|
+ * the application. Thus this may go away at some time
|
|
+ * in the future.
|
|
+ */
|
|
+ tfrom = NULL;
|
|
+ for (dpnt = _dl_symbol_tables; dpnt; dpnt = dpnt->next) {
|
|
+ tpnt = dpnt->dyn;
|
|
+ if (tpnt->loadaddr < from
|
|
+ && (tfrom == NULL || tfrom->loadaddr < tpnt->loadaddr))
|
|
+ tfrom = tpnt;
|
|
+ }
|
|
+
|
|
+ /* Try to load the specified library */
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(_dl_debug_file, "Trying to dlopen '%s'\n", (char*)libname);
|
|
+#endif
|
|
+ tpnt = _dl_load_shared_library(0, &rpnt, tfrom, (char*)libname);
|
|
+ if (tpnt == NULL) {
|
|
+ _dl_unmap_cache();
|
|
+ return NULL;
|
|
+ }
|
|
+
|
|
+ dyn_chain = (struct dyn_elf *) malloc(sizeof(struct dyn_elf));
|
|
+ _dl_memset(dyn_chain, 0, sizeof(struct dyn_elf));
|
|
+ dyn_chain->dyn = tpnt;
|
|
+ dyn_chain->flags = flag;
|
|
+ if (!tpnt->symbol_scope)
|
|
+ tpnt->symbol_scope = dyn_chain;
|
|
+
|
|
+ dyn_chain->next_handle = _dl_handles;
|
|
+ _dl_handles = rpnt = dyn_chain;
|
|
+
|
|
+ if (tpnt->init_flag & INIT_FUNCS_CALLED) {
|
|
+ /* If the init and fini stuff has already been run, that means
|
|
+ * the dlopen'd library has already been loaded, and nothing
|
|
+ * further needs to be done. */
|
|
+ return (void *) dyn_chain;
|
|
+ }
|
|
+
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(_dl_debug_file, "Looking for needed libraries\n");
|
|
+#endif
|
|
+
|
|
+ for (tcurr = tpnt; tcurr; tcurr = tcurr->next)
|
|
+ {
|
|
+ Elf32_Dyn *dpnt;
|
|
+ char *lpntstr;
|
|
+ for (dpnt = (Elf32_Dyn *) tcurr->dynamic_addr; dpnt->d_tag; dpnt++) {
|
|
+ if (dpnt->d_tag == DT_NEEDED) {
|
|
+
|
|
+ char *name;
|
|
+ lpntstr = (char*) (tcurr->loadaddr + tcurr->dynamic_info[DT_STRTAB] +
|
|
+ dpnt->d_un.d_val);
|
|
+ name = _dl_get_last_path_component(lpntstr);
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(_dl_debug_file, "Trying to load '%s', needed by '%s'\n",
|
|
+ lpntstr, tcurr->libname);
|
|
+#endif
|
|
+
|
|
+ if (!(tpnt1 = _dl_load_shared_library(0, &rpnt, tcurr, lpntstr))) {
|
|
+ goto oops;
|
|
+ }
|
|
+
|
|
+#if 1
|
|
+//FIXME: Enabling this is _so_ wrong....
|
|
+ /* We need global symbol resolution for everything
|
|
+ * in the dependent chain */
|
|
+ dyn_chain->flags |= RTLD_GLOBAL;
|
|
+#endif
|
|
+
|
|
+ rpnt->next = (struct dyn_elf *) malloc(sizeof(struct dyn_elf));
|
|
+ _dl_memset (rpnt->next, 0, sizeof (struct dyn_elf));
|
|
+ rpnt = rpnt->next;
|
|
+ if (!tpnt1->symbol_scope) tpnt1->symbol_scope = rpnt;
|
|
+ rpnt->dyn = tpnt1;
|
|
+
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * OK, now attach the entire chain at the end
|
|
+ */
|
|
+ rpnt->next = _dl_symbol_tables;
|
|
+
|
|
+#ifdef __mips__
|
|
+ /*
|
|
+ * Relocation of the GOT entries for MIPS have to be done
|
|
+ * after all the libraries have been loaded.
|
|
+ */
|
|
+ _dl_perform_mips_global_got_relocations(tpnt);
|
|
+#endif
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(_dl_debug_file, "Beginning dlopen relocation fixups\n");
|
|
+#endif
|
|
+ /*
|
|
+ * OK, now all of the kids are tucked into bed in their proper addresses.
|
|
+ * Now we go through and look for REL and RELA records that indicate fixups
|
|
+ * to the GOT tables. We need to do this in reverse order so that COPY
|
|
+ * directives work correctly */
|
|
+ if (_dl_fixup(dyn_chain->dyn, dyn_chain->flags))
|
|
+ goto oops;
|
|
+
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(_dl_debug_file, "Beginning dlopen copy fixups\n");
|
|
+#endif
|
|
+ if (_dl_symbol_tables) {
|
|
+ if (_dl_copy_fixups(dyn_chain))
|
|
+ goto oops;
|
|
+ }
|
|
+
|
|
+
|
|
+ /* TODO: Should we set the protections of all pages back to R/O now ? */
|
|
+
|
|
+
|
|
+ /* Notify the debugger we have added some objects. */
|
|
+ _dl_debug_addr->r_state = RT_ADD;
|
|
+ if (_dl_debug_addr) {
|
|
+ dl_brk = (void (*)(void)) _dl_debug_addr->r_brk;
|
|
+ if (dl_brk != NULL) {
|
|
+ _dl_debug_addr->r_state = RT_ADD;
|
|
+ (*dl_brk) ();
|
|
+
|
|
+ _dl_debug_addr->r_state = RT_CONSISTENT;
|
|
+ (*dl_brk) ();
|
|
+ }
|
|
+ }
|
|
+
|
|
+#if 0 //def __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dlinfo();
|
|
+#endif
|
|
+
|
|
+#ifdef __LIBDL_SHARED__
|
|
+ /* Find the last library so we can run things in the right order */
|
|
+ for (tpnt = dyn_chain->dyn; tpnt->next!=NULL; tpnt = tpnt->next)
|
|
+ ;
|
|
+
|
|
+ /* Run the ctors and set up the dtors */
|
|
+ for (; tpnt != dyn_chain->dyn->prev; tpnt=tpnt->prev)
|
|
+ {
|
|
+ /* Apparently crt1 for the application is responsible for handling this.
|
|
+ * We only need to run the init/fini for shared libraries
|
|
+ */
|
|
+ if (tpnt->libtype == program_interpreter)
|
|
+ continue;
|
|
+ if (tpnt->libtype == elf_executable)
|
|
+ continue;
|
|
+ if (tpnt->init_flag & INIT_FUNCS_CALLED)
|
|
+ continue;
|
|
+ tpnt->init_flag |= INIT_FUNCS_CALLED;
|
|
+
|
|
+ if (tpnt->dynamic_info[DT_INIT]) {
|
|
+ void (*dl_elf_func) (void);
|
|
+ dl_elf_func = (void (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_INIT]);
|
|
+ if (dl_elf_func && *dl_elf_func != NULL) {
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(2, "running ctors for library %s at '%x'\n", tpnt->libname, dl_elf_func);
|
|
+#endif
|
|
+ (*dl_elf_func) ();
|
|
+ }
|
|
+ }
|
|
+ if (tpnt->dynamic_info[DT_FINI]) {
|
|
+ void (*dl_elf_func) (void);
|
|
+ dl_elf_func = (void (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI]);
|
|
+ if (dl_elf_func && *dl_elf_func != NULL) {
|
|
+#ifdef __SUPPORT_LD_DEBUG__
|
|
+ if(_dl_debug)
|
|
+ _dl_dprintf(2, "setting up dtors for library %s at '%x'\n", tpnt->libname, dl_elf_func);
|
|
+#endif
|
|
+ atexit(dl_elf_func);
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+#endif
|
|
+ return (void *) dyn_chain;
|
|
+
|
|
+oops:
|
|
+ /* Something went wrong. Clean up and return NULL. */
|
|
+ _dl_unmap_cache();
|
|
+ do_dlclose(dyn_chain, 0);
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+void *_dlsym(void *vhandle, const char *name)
|
|
+{
|
|
+ struct elf_resolve *tpnt, *tfrom;
|
|
+ struct dyn_elf *handle;
|
|
+ ElfW(Addr) from;
|
|
+ struct dyn_elf *rpnt;
|
|
+ void *ret;
|
|
+
|
|
+ handle = (struct dyn_elf *) vhandle;
|
|
+
|
|
+ /* First of all verify that we have a real handle
|
|
+ of some kind. Return NULL if not a valid handle. */
|
|
+
|
|
+ if (handle == NULL)
|
|
+ handle = _dl_symbol_tables;
|
|
+ else if (handle != RTLD_NEXT && handle != _dl_symbol_tables) {
|
|
+ for (rpnt = _dl_handles; rpnt; rpnt = rpnt->next_handle)
|
|
+ if (rpnt == handle)
|
|
+ break;
|
|
+ if (!rpnt) {
|
|
+ _dl_error_number = LD_BAD_HANDLE;
|
|
+ return NULL;
|
|
+ }
|
|
+ } else if (handle == RTLD_NEXT) {
|
|
+ /*
|
|
+ * Try and locate the module we were called from - we
|
|
+ * need this so that we know where to start searching
|
|
+ * from. We never pass RTLD_NEXT down into the actual
|
|
+ * dynamic loader itself, as it doesn't know
|
|
+ * how to properly treat it.
|
|
+ */
|
|
+ from = (ElfW(Addr)) __builtin_return_address(0);
|
|
+
|
|
+ tfrom = NULL;
|
|
+ for (rpnt = _dl_symbol_tables; rpnt; rpnt = rpnt->next) {
|
|
+ tpnt = rpnt->dyn;
|
|
+ if (tpnt->loadaddr < from
|
|
+ && (tfrom == NULL || tfrom->loadaddr < tpnt->loadaddr)) {
|
|
+ tfrom = tpnt;
|
|
+ handle = rpnt->next;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ ret = _dl_find_hash((char*)name, handle, NULL, copyrel);
|
|
+
|
|
+ /*
|
|
+ * Nothing found.
|
|
+ */
|
|
+ if (!ret)
|
|
+ _dl_error_number = LD_NO_SYMBOL;
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+int _dlclose(void *vhandle)
|
|
+{
|
|
+ return do_dlclose(vhandle, 1);
|
|
+}
|
|
+
|
|
+static int do_dlclose(void *vhandle, int need_fini)
|
|
+{
|
|
+ struct dyn_elf *rpnt, *rpnt1;
|
|
+ struct dyn_elf *spnt, *spnt1;
|
|
+ ElfW(Phdr) *ppnt;
|
|
+ struct elf_resolve *tpnt;
|
|
+ int (*dl_elf_fini) (void);
|
|
+ void (*dl_brk) (void);
|
|
+ struct dyn_elf *handle;
|
|
+ unsigned int end;
|
|
+ int i = 0;
|
|
+
|
|
+ handle = (struct dyn_elf *) vhandle;
|
|
+ rpnt1 = NULL;
|
|
+ for (rpnt = _dl_handles; rpnt; rpnt = rpnt->next_handle) {
|
|
+ if (rpnt == handle) {
|
|
+ break;
|
|
+ }
|
|
+ rpnt1 = rpnt;
|
|
+ }
|
|
+
|
|
+ if (!rpnt) {
|
|
+ _dl_error_number = LD_BAD_HANDLE;
|
|
+ return 1;
|
|
+ }
|
|
+
|
|
+ /* OK, this is a valid handle - now close out the file.
|
|
+ * We check if we need to call fini () on the handle. */
|
|
+ spnt = need_fini ? handle : handle->next;
|
|
+ for (; spnt; spnt = spnt1) {
|
|
+ spnt1 = spnt->next;
|
|
+
|
|
+ /* We appended the module list to the end - when we get back here,
|
|
+ quit. The access counts were not adjusted to account for being here. */
|
|
+ if (spnt == _dl_symbol_tables)
|
|
+ break;
|
|
+ if (spnt->dyn->usage_count == 1
|
|
+ && spnt->dyn->libtype == loaded_file) {
|
|
+ tpnt = spnt->dyn;
|
|
+ /* Apparently crt1 for the application is responsible for handling this.
|
|
+ * We only need to run the init/fini for shared libraries
|
|
+ */
|
|
+
|
|
+ if (tpnt->dynamic_info[DT_FINI]) {
|
|
+ dl_elf_fini = (int (*)(void)) (tpnt->loadaddr +
|
|
+ tpnt->dynamic_info[DT_FINI]);
|
|
+ (*dl_elf_fini) ();
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ if (rpnt1)
|
|
+ rpnt1->next_handle = rpnt->next_handle;
|
|
+ else
|
|
+ _dl_handles = rpnt->next_handle;
|
|
+
|
|
+ /* OK, this is a valid handle - now close out the file */
|
|
+ for (rpnt = handle; rpnt; rpnt = rpnt1) {
|
|
+ rpnt1 = rpnt->next;
|
|
+
|
|
+ /* We appended the module list to the end - when we get back here,
|
|
+ quit. The access counts were not adjusted to account for being here. */
|
|
+ if (rpnt == _dl_symbol_tables)
|
|
+ break;
|
|
+
|
|
+ rpnt->dyn->usage_count--;
|
|
+ if (rpnt->dyn->usage_count == 0
|
|
+ && rpnt->dyn->libtype == loaded_file) {
|
|
+ tpnt = rpnt->dyn;
|
|
+ /* Apparently crt1 for the application is responsible for handling this.
|
|
+ * We only need to run the init/fini for shared libraries
|
|
+ */
|
|
+#if 0
|
|
+
|
|
+ /* We have to do this above, before we start closing objects.
|
|
+ * Otherwise when the needed symbols for _fini handling are
|
|
+ * resolved a coredump would occur. Rob Ryan (robr@cmu.edu)*/
|
|
+ if (tpnt->dynamic_info[DT_FINI]) {
|
|
+ dl_elf_fini = (int (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI]);
|
|
+ (*dl_elf_fini) ();
|
|
+ }
|
|
+#endif
|
|
+ end = 0;
|
|
+ for (i = 0, ppnt = rpnt->dyn->ppnt;
|
|
+ i < rpnt->dyn->n_phent; ppnt++, i++) {
|
|
+ if (ppnt->p_type != PT_LOAD)
|
|
+ continue;
|
|
+ if (end < ppnt->p_vaddr + ppnt->p_memsz)
|
|
+ end = ppnt->p_vaddr + ppnt->p_memsz;
|
|
+ }
|
|
+ _dl_munmap((void*)rpnt->dyn->loadaddr, end);
|
|
+ /* Next, remove rpnt->dyn from the loaded_module list */
|
|
+ if (_dl_loaded_modules == rpnt->dyn) {
|
|
+ _dl_loaded_modules = rpnt->dyn->next;
|
|
+ if (_dl_loaded_modules)
|
|
+ _dl_loaded_modules->prev = 0;
|
|
+ } else
|
|
+ for (tpnt = _dl_loaded_modules; tpnt; tpnt = tpnt->next)
|
|
+ if (tpnt->next == rpnt->dyn) {
|
|
+ tpnt->next = tpnt->next->next;
|
|
+ if (tpnt->next)
|
|
+ tpnt->next->prev = tpnt;
|
|
+ break;
|
|
+ }
|
|
+ free(rpnt->dyn->libname);
|
|
+ free(rpnt->dyn);
|
|
+ }
|
|
+ free(rpnt);
|
|
+ }
|
|
+
|
|
+
|
|
+ if (_dl_debug_addr) {
|
|
+ dl_brk = (void (*)(void)) _dl_debug_addr->r_brk;
|
|
+ if (dl_brk != NULL) {
|
|
+ _dl_debug_addr->r_state = RT_DELETE;
|
|
+ (*dl_brk) ();
|
|
+
|
|
+ _dl_debug_addr->r_state = RT_CONSISTENT;
|
|
+ (*dl_brk) ();
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+const char *_dlerror(void)
|
|
+{
|
|
+ const char *retval;
|
|
+
|
|
+ if (!_dl_error_number)
|
|
+ return NULL;
|
|
+ retval = dl_error_names[_dl_error_number];
|
|
+ _dl_error_number = 0;
|
|
+ return retval;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Dump information to stderrr about the current loaded modules
|
|
+ */
|
|
+static char *type[] = { "Lib", "Exe", "Int", "Mod" };
|
|
+
|
|
+void _dlinfo(void)
|
|
+{
|
|
+ struct elf_resolve *tpnt;
|
|
+ struct dyn_elf *rpnt, *hpnt;
|
|
+
|
|
+ _dl_dprintf(2, "List of loaded modules\n");
|
|
+ /* First start with a complete list of all of the loaded files. */
|
|
+ for (tpnt = _dl_loaded_modules; tpnt; tpnt = tpnt->next) {
|
|
+ _dl_dprintf(2, "\t%x %x %x %s %d %s\n",
|
|
+ (unsigned) tpnt->loadaddr, (unsigned) tpnt,
|
|
+ (unsigned) tpnt->symbol_scope,
|
|
+ type[tpnt->libtype],
|
|
+ tpnt->usage_count, tpnt->libname);
|
|
+ }
|
|
+
|
|
+ /* Next dump the module list for the application itself */
|
|
+ _dl_dprintf(2, "\nModules for application (%x):\n",
|
|
+ (unsigned) _dl_symbol_tables);
|
|
+ for (rpnt = _dl_symbol_tables; rpnt; rpnt = rpnt->next)
|
|
+ _dl_dprintf(2, "\t%x %s\n", (unsigned) rpnt->dyn, rpnt->dyn->libname);
|
|
+
|
|
+ for (hpnt = _dl_handles; hpnt; hpnt = hpnt->next_handle) {
|
|
+ _dl_dprintf(2, "Modules for handle %x\n", (unsigned) hpnt);
|
|
+ for (rpnt = hpnt; rpnt; rpnt = rpnt->next)
|
|
+ _dl_dprintf(2, "\t%x %s\n", (unsigned) rpnt->dyn,
|
|
+ rpnt->dyn->libname);
|
|
+ }
|
|
+}
|
|
+
|
|
+int _dladdr(void *__address, Dl_info * __dlip)
|
|
+{
|
|
+ struct elf_resolve *pelf;
|
|
+ struct elf_resolve *rpnt;
|
|
+
|
|
+ _dl_map_cache();
|
|
+
|
|
+ /*
|
|
+ * Try and locate the module address is in
|
|
+ */
|
|
+ pelf = NULL;
|
|
+
|
|
+#if 0
|
|
+ _dl_dprintf(2, "dladdr( %x, %x )\n", __address, __dlip);
|
|
+#endif
|
|
+
|
|
+ for (rpnt = _dl_loaded_modules; rpnt; rpnt = rpnt->next) {
|
|
+ struct elf_resolve *tpnt;
|
|
+
|
|
+ tpnt = rpnt;
|
|
+#if 0
|
|
+ _dl_dprintf(2, "Module \"%s\" at %x\n",
|
|
+ tpnt->libname, tpnt->loadaddr);
|
|
+#endif
|
|
+ if (tpnt->loadaddr < (ElfW(Addr)) __address
|
|
+ && (pelf == NULL || pelf->loadaddr < tpnt->loadaddr)) {
|
|
+ pelf = tpnt;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (!pelf) {
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Try and locate the symbol of address
|
|
+ */
|
|
+
|
|
+ {
|
|
+ char *strtab;
|
|
+ Elf32_Sym *symtab;
|
|
+ int hn, si;
|
|
+ int sf;
|
|
+ int sn = 0;
|
|
+ ElfW(Addr) sa;
|
|
+
|
|
+ sa = 0;
|
|
+ symtab = (Elf32_Sym *) (pelf->dynamic_info[DT_SYMTAB] + pelf->loadaddr);
|
|
+ strtab = (char *) (pelf->dynamic_info[DT_STRTAB] + pelf->loadaddr);
|
|
+
|
|
+ sf = 0;
|
|
+ for (hn = 0; hn < pelf->nbucket; hn++) {
|
|
+ for (si = pelf->elf_buckets[hn]; si; si = pelf->chains[si]) {
|
|
+ ElfW(Addr) symbol_addr;
|
|
+
|
|
+ symbol_addr = pelf->loadaddr + symtab[si].st_value;
|
|
+ if (symbol_addr <= (ElfW(Addr))__address && (!sf || sa < symbol_addr)) {
|
|
+ sa = symbol_addr;
|
|
+ sn = si;
|
|
+ sf = 1;
|
|
+ }
|
|
+#if 0
|
|
+ _dl_dprintf(2, "Symbol \"%s\" at %x\n",
|
|
+ strtab + symtab[si].st_name, symbol_addr);
|
|
+#endif
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (sf) {
|
|
+ __dlip->dli_fname = pelf->libname;
|
|
+ __dlip->dli_fbase = (void *)pelf->loadaddr;
|
|
+ __dlip->dli_sname = strtab + symtab[sn].st_name;
|
|
+ __dlip->dli_saddr = (void *)sa;
|
|
+ }
|
|
+ return 1;
|
|
+ }
|
|
+}
|
|
diff -urN uClibc/ldso-0.9.24/man/Makefile uClibc.ldso.24/ldso-0.9.24/man/Makefile
|
|
--- uClibc/ldso-0.9.24/man/Makefile 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/man/Makefile 2003-10-18 05:18:37.000000000 -0500
|
|
@@ -0,0 +1,33 @@
|
|
+# Makefile for uClibc
|
|
+#
|
|
+# Copyright (C) 2000,2001 Erik Andersen <andersen@uclibc.org>
|
|
+#
|
|
+# This program is free software; you can redistribute it and/or modify it under
|
|
+# the terms of the GNU Library General Public License as published by the Free
|
|
+# Software Foundation; either version 2 of the License, or (at your option) any
|
|
+# later version.
|
|
+#
|
|
+# This program is distributed in the hope that it will be useful, but WITHOUT
|
|
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
+# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
|
|
+# details.
|
|
+#
|
|
+# You should have received a copy of the GNU Library General Public License
|
|
+# along with this program; if not, write to the Free Software Foundation, Inc.,
|
|
+# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
+#
|
|
+# Derived in part from the Linux-8086 C library, the GNU C Library, and several
|
|
+# other sundry sources. Files within this library are copyright by their
|
|
+# respective copyright holders.
|
|
+
|
|
+include ../Config.mk
|
|
+
|
|
+ALL = #ld.so.info
|
|
+
|
|
+all: $(ALL)
|
|
+
|
|
+ld.so.info: ld.so.texi
|
|
+ makeinfo $<
|
|
+
|
|
+clean:
|
|
+ $(RM) $(ALL) *~
|
|
diff -urN uClibc/ldso-0.9.24/man/dlopen.3 uClibc.ldso.24/ldso-0.9.24/man/dlopen.3
|
|
--- uClibc/ldso-0.9.24/man/dlopen.3 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/man/dlopen.3 2001-04-23 12:43:54.000000000 -0500
|
|
@@ -0,0 +1,218 @@
|
|
+.\" -*- nroff -*-
|
|
+.\" Copyright 1995 Yggdrasil Computing, Incorporated.
|
|
+.\" written by Adam J. Richter (adam@yggdrasil.com),
|
|
+.\" with typesetting help from Daniel Quinlan (quinlan@yggdrasil.com).
|
|
+.\"
|
|
+.\" This is free documentation; you can redistribute it and/or
|
|
+.\" modify it under the terms of the GNU General Public License as
|
|
+.\" published by the Free Software Foundation; either version 2 of
|
|
+.\" the License, or (at your option) any later version.
|
|
+.\"
|
|
+.\" The GNU General Public License's references to "object code"
|
|
+.\" and "executables" are to be interpreted as the output of any
|
|
+.\" document formatting or typesetting system, including
|
|
+.\" intermediate and printed output.
|
|
+.\"
|
|
+.\" This manual is distributed in the hope that it will be useful,
|
|
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
+.\" GNU General Public License for more details.
|
|
+.\"
|
|
+.\" You should have received a copy of the GNU General Public
|
|
+.\" License along with this manual; if not, write to the Free
|
|
+.\" Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
|
|
+.\" USA.
|
|
+.\"
|
|
+.TH DLOPEN 3 "16 May 1995" "Linux" "Linux Programmer's Manual"
|
|
+.SH NAME
|
|
+dlclose, dlerror, dlopen, dlsym \- Programming interface to dynamic linking loader.
|
|
+.SH SYNOPSIS
|
|
+.B #include <dlfcn.h>
|
|
+.sp
|
|
+.BI "void *dlopen (const char *" "filename" ", int " flag ");
|
|
+.br
|
|
+.BI "const char *dlerror(void);"
|
|
+.br
|
|
+.BI "void *dlsym(void *"handle ", char *"symbol ");"
|
|
+.br
|
|
+.BI "int dladdr(void *"address ", Dl_info *"dlip ");"
|
|
+.br
|
|
+.BI "int dlclose (void *"handle ");
|
|
+.sp
|
|
+Special symbols:
|
|
+.BR "_init" ", " "_fini" ". "
|
|
+.SH DESCRIPTION
|
|
+.B dlopen
|
|
+loads a dynamic library from the file named by the null terminated
|
|
+string
|
|
+.I filename
|
|
+and returns an opaque "handle" for the dynamic library.
|
|
+If
|
|
+.I filename
|
|
+is not an absolute path (i.e., it does not begin with a "/"), then the
|
|
+file is searched for in the following locations:
|
|
+.RS
|
|
+.PP
|
|
+A colon-separated list of directories in the user's
|
|
+\fBLD_LIBRARY\fP path environment variable.
|
|
+.PP
|
|
+The list of libraries specified in \fI/etc/ld.so.cache\fP.
|
|
+.PP
|
|
+\fI/usr/lib\fP, followed by \fI/lib\fP.
|
|
+.RE
|
|
+.PP
|
|
+If
|
|
+.I filename
|
|
+is a NULL pointer, then the returned handle is for the main program.
|
|
+.PP
|
|
+External references in the library are resolved using the libraries
|
|
+in that library's dependency list and any other libraries previously
|
|
+opened with the
|
|
+.B RTLD_GLOBAL
|
|
+flag.
|
|
+If the executable was linked
|
|
+with the flag "-rdynamic", then the global symbols in the executable
|
|
+will also be used to resolve references in a dynamically loaded
|
|
+library.
|
|
+.PP
|
|
+.I flag
|
|
+must be either
|
|
+.BR RTLD_LAZY ,
|
|
+meaning resolve undefined symbols as code from the dynamic library is
|
|
+executed, or
|
|
+.BR RTLD_NOW ,
|
|
+meaning resolve all undefined symbols before
|
|
+.B dlopen
|
|
+returns, and fail if this cannot be done.
|
|
+Optionally,
|
|
+.B RTLD_GLOBAL
|
|
+may be or'ed with
|
|
+.IR flag,
|
|
+in which case the external symbols defined in the library will be
|
|
+made available to subsequently loaded libraries.
|
|
+.PP
|
|
+If the library exports a routine named
|
|
+.BR _init ,
|
|
+then that code is executed before dlopen returns.
|
|
+If the same library is loaded twice with
|
|
+.BR dlopen() ,
|
|
+the same file handle is returned. The dl library maintains link
|
|
+counts for dynamic file handles, so a dynamic library is not
|
|
+deallocated until
|
|
+.B dlclose
|
|
+has been called on it as many times as
|
|
+.B dlopen
|
|
+has succeeded on it.
|
|
+.PP
|
|
+If
|
|
+.B dlopen
|
|
+fails for any reason, it returns NULL.
|
|
+A human readable string describing the most recent error that occurred
|
|
+from any of the dl routines (dlopen, dlsym or dlclose) can be
|
|
+extracted with
|
|
+.BR dlerror() .
|
|
+.B dlerror
|
|
+returns NULL if no errors have occurred since initialization or since
|
|
+it was last called. (Calling
|
|
+.B dlerror()
|
|
+twice consecutively, will always result in the second call returning
|
|
+NULL.)
|
|
+
|
|
+.B dlsym
|
|
+takes a "handle" of a dynamic library returned by dlopen and the null
|
|
+terminated symbol name, returning the address where that symbol is
|
|
+loaded. If the symbol is not found,
|
|
+.B dlsym
|
|
+returns NULL; however, the correct way to test for an error from
|
|
+.B dlsym
|
|
+is to save the result of
|
|
+.B dlerror
|
|
+into a variable, and then check if saved value is not NULL.
|
|
+This is because the value of the symbol could actually be NULL.
|
|
+It is also necessary to save the results of
|
|
+.B dlerror
|
|
+into a variable because if
|
|
+.B dlerror
|
|
+is called again, it will return NULL.
|
|
+.PP
|
|
+.B dladdr
|
|
+returns information about the shared library containing the memory
|
|
+location specified by
|
|
+.IR address .
|
|
+.B dladdr
|
|
+returns zero on success and non-zero on error.
|
|
+.PP
|
|
+.B dlclose
|
|
+decrements the reference count on the dynamic library handle
|
|
+.IR handle .
|
|
+If the reference count drops to zero and no other loaded libraries use
|
|
+symbols in it, then the dynamic library is unloaded. If the dynamic
|
|
+library exports a routine named
|
|
+.BR _fini ,
|
|
+then that routine is called just before the library is unloaded.
|
|
+.SH EXAMPLES
|
|
+.B Load the math library, and print the cosine of 2.0:
|
|
+.RS
|
|
+.nf
|
|
+.if t .ft CW
|
|
+#include <dlfcn.h>
|
|
+
|
|
+int main(int argc, char **argv) {
|
|
+ void *handle = dlopen ("/lib/libm.so", RTLD_LAZY);
|
|
+ double (*cosine)(double) = dlsym(handle, "cos");
|
|
+ printf ("%f\\n", (*cosine)(2.0));
|
|
+ dlclose(handle);
|
|
+}
|
|
+.if t .ft P
|
|
+.fi
|
|
+.PP
|
|
+If this program were in a file named "foo.c", you would build the program
|
|
+with the following command:
|
|
+.RS
|
|
+.LP
|
|
+gcc -rdynamic -o foo foo.c -ldl
|
|
+.RE
|
|
+.RE
|
|
+.LP
|
|
+.B Do the same thing, but check for errors at every step:
|
|
+.RS
|
|
+.nf
|
|
+.if t .ft CW
|
|
+#include <stdio.h>
|
|
+#include <dlfcn.h>
|
|
+
|
|
+int main(int argc, char **argv) {
|
|
+ void *handle;
|
|
+ double (*cosine)(double);
|
|
+ char *error;
|
|
+
|
|
+ handle = dlopen ("/lib/libm.so", RTLD_LAZY);
|
|
+ if (!handle) {
|
|
+ fputs (dlerror(), stderr);
|
|
+ exit(1);
|
|
+ }
|
|
+
|
|
+ cosine = dlsym(handle, "cos");
|
|
+ if ((error = dlerror()) != NULL) {
|
|
+ fputs(error, stderr);
|
|
+ exit(1);
|
|
+ }
|
|
+
|
|
+ printf ("%f\\n", (*cosine)(2.0));
|
|
+ dlclose(handle);
|
|
+}
|
|
+.if t .ft P
|
|
+.fi
|
|
+.RE
|
|
+.SH ACKNOWLEDGEMENTS
|
|
+The dlopen interface standard comes from Solaris.
|
|
+The Linux dlopen implementation was primarily written by
|
|
+Eric Youngdale with help from Mitch D'Souza, David Engel,
|
|
+Hongjiu Lu, Andreas Schwab and others.
|
|
+The manual page was written by Adam Richter.
|
|
+.SH SEE ALSO
|
|
+.BR ld(1) ,
|
|
+.BR ld.so(8) ,
|
|
+.BR ldconfig(8) ,
|
|
+.BR ldd(1) ,
|
|
+.BR ld.so.info .
|
|
diff -urN uClibc/ldso-0.9.24/man/ld.so.8 uClibc.ldso.24/ldso-0.9.24/man/ld.so.8
|
|
--- uClibc/ldso-0.9.24/man/ld.so.8 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/man/ld.so.8 2001-04-23 12:43:54.000000000 -0500
|
|
@@ -0,0 +1,113 @@
|
|
+.TH ld.so 8 "14 March 1998"
|
|
+.SH NAME
|
|
+ld.so/ld-linux.so \- dynamic linker/loader
|
|
+.SH DESCRIPTION
|
|
+.B ld.so
|
|
+loads the shared libraries needed by a program, prepares the program
|
|
+to run, and then runs it.
|
|
+Unless explicitly specified via the
|
|
+.B \-static
|
|
+option to
|
|
+.B ld
|
|
+during compilation, all Linux programs are incomplete and require
|
|
+further linking at run time.
|
|
+.PP
|
|
+The necessary shared libraries needed by the program are searched for
|
|
+in the following order
|
|
+.IP o
|
|
+Using the environment variable
|
|
+.B LD_LIBRARY_PATH
|
|
+.RB ( LD_AOUT_LIBRARY_PATH
|
|
+for a.out programs).
|
|
+Except if the executable is a setuid/setgid binary, in which case it
|
|
+is ignored.
|
|
+.IP o
|
|
+From the cache file
|
|
+.BR /etc/ld.so.cache
|
|
+which contains a compiled list of candidate libraries previously found
|
|
+in the augmented library path.
|
|
+.IP o
|
|
+In the default path
|
|
+.BR /usr/lib ,
|
|
+and then
|
|
+.BR /lib .
|
|
+.SH ENVIRONMENT
|
|
+.TP
|
|
+.B LD_LIBRARY_PATH
|
|
+A colon-separated list of directories in which to search for
|
|
+ELF libraries at execution-time.
|
|
+Similar to the
|
|
+.B PATH
|
|
+environment variable.
|
|
+.TP
|
|
+.B LD_PRELOAD
|
|
+A whitespace-separated list of additional, user-specified, ELF shared
|
|
+libraries to be loaded before all others.
|
|
+This can be used to selectively override functions in other shared libraries.
|
|
+For setuid/setgid ELF binaries, only libraries in the standard search
|
|
+directories that are also setgid will be loaded.
|
|
+.TP
|
|
+.B LD_TRACE_LOADED_OBJECTS
|
|
+If present, causes the program to list its dynamic library dependencies,
|
|
+as if run by ldd, instead of running normally.
|
|
+.TP
|
|
+.B LD_BIND_NOW
|
|
+If present, causes the dynamic linker to resolve all symbols at program
|
|
+startup instead of when they are first referenced.
|
|
+.TP
|
|
+.B LD_AOUT_LIBRARY_PATH
|
|
+A colon-separated list of directories in which to search for
|
|
+a.out libraries at execution-time.
|
|
+Similar to the
|
|
+.B PATH
|
|
+environment variable.
|
|
+.TP
|
|
+.B LD_AOUT_PRELOAD
|
|
+The name of an additional, user-specified, a.out shared library to be loaded
|
|
+after all others.
|
|
+This can be used to selectively override functions in other shared libraries.
|
|
+.TP
|
|
+.B LD_NOWARN
|
|
+Suppress warnings about a.out libraries with incompatible minor
|
|
+version numbers.
|
|
+.TP
|
|
+.B LD_KEEPDIR
|
|
+Don't ignore the directory in the names of a.out libraries to be loaded.
|
|
+Use of this option is strongly discouraged.
|
|
+.SH FILES
|
|
+.PD 0
|
|
+.TP 20
|
|
+.B /lib/ld.so
|
|
+a.out dynamic linker/loader
|
|
+.TP 20
|
|
+.B /lib/ld-linux.so.*
|
|
+ELF dynamic linker/loader
|
|
+.TP
|
|
+.B /etc/ld.so.cache
|
|
+File containing a compiled list of directories in which to search for
|
|
+libraries and an ordered list of candidate libraries.
|
|
+.TP
|
|
+.B /etc/ld.so.preload
|
|
+File containing a whitespace separated list of ELF shared libraries to
|
|
+be loaded before the program.
|
|
+libraries and an ordered list of candidate libraries.
|
|
+.TP
|
|
+.B lib*.so*
|
|
+shared libraries
|
|
+.PD
|
|
+.SH SEE ALSO
|
|
+.BR ldd (1),
|
|
+.BR ldconfig (8).
|
|
+.SH BUGS
|
|
+.LP
|
|
+Currently
|
|
+.B ld.so
|
|
+has no means of unloading and searching for compatible or newer version of
|
|
+libraries.
|
|
+.PP
|
|
+.B ld.so
|
|
+functionality is only available for executables compiled using libc version
|
|
+4.4.3 or greater.
|
|
+.SH AUTHORS
|
|
+David Engel, Eric Youngdale, Peter MacDonald, Hongjiu Lu, Linus
|
|
+Torvalds, Lars Wirzenius and Mitch D'Souza (not necessarily in that order).
|
|
diff -urN uClibc/ldso-0.9.24/man/ld.so.texi uClibc.ldso.24/ldso-0.9.24/man/ld.so.texi
|
|
--- uClibc/ldso-0.9.24/man/ld.so.texi 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/man/ld.so.texi 2001-04-23 12:43:54.000000000 -0500
|
|
@@ -0,0 +1,411 @@
|
|
+\input texinfo @c -*-texinfo-*-
|
|
+@c %**start of header
|
|
+@setfilename ld.so.info
|
|
+@settitle ld.so : Dynamic-Link Library support
|
|
+@c %**end of header
|
|
+
|
|
+@ifinfo
|
|
+This file documents the dynamic-link support libraries and utilities for the
|
|
+Linux OS, version 1.8.1.
|
|
+
|
|
+Copyright 1996 Michael Deutschmann
|
|
+
|
|
+This document is subject to the GNU General Public License as published by
|
|
+the Free Software foundation, version 2 or later (your choice).
|
|
+
|
|
+Note: The software described in this document is under a different copyright
|
|
+and license.
|
|
+
|
|
+@end ifinfo
|
|
+
|
|
+@titlepage
|
|
+@title ld.so
|
|
+@subtitle Dynamic Link library support for the Linux OS.
|
|
+@author David Engel
|
|
+@author Eric Youngdale
|
|
+@author Peter Macdonald
|
|
+@author Hongjiu Lu
|
|
+@author Mitch D'Souza
|
|
+@author Michael Deutschmann (this documentation)
|
|
+
|
|
+@page
|
|
+Copyright @copyright{} 1996 Michael Deutschmann
|
|
+
|
|
+This document is subject to the GNU General Public License as published by
|
|
+the Free Software foundation, version 2 or later (your choice).
|
|
+
|
|
+Note: The software described in this document is under a different copyright
|
|
+and license.
|
|
+@end titlepage
|
|
+
|
|
+@ifinfo
|
|
+@node Top
|
|
+@top
|
|
+
|
|
+The @code{ld.so} module provides dynamic linked library support in Linux.
|
|
+This file documents @code{ld.so} and its companion software.
|
|
+
|
|
+@menu
|
|
+* intro:: Introduction
|
|
+
|
|
+* ld.so:: The dynamic linker core program
|
|
+* ldd:: A utility to print out dependencies
|
|
+* ldconfig:: A utility to maintain the cache and symlinks
|
|
+* libdl:: Manual dynamic linking library
|
|
+@end menu
|
|
+
|
|
+@end ifinfo
|
|
+
|
|
+@node intro
|
|
+@unnumbered Introduction
|
|
+
|
|
+The @code{ld.so} suite contains special files and utilities needed for linux
|
|
+to handle @dfn{dynamic libraries}.
|
|
+
|
|
+Ordinary static libraries (@file{lib*.a} files) are included into executables
|
|
+that use their functions. A file that only uses static libraries needs less
|
|
+intelligence to load, but takes up more space. If many executables use the
|
|
+same library, there can be much wastage of storage space, since multiple
|
|
+copies of the library functions are scattered across the executables.
|
|
+However, static libraries are easier to make.
|
|
+
|
|
+Dynamic libraries (@file{lib*.so*} files) are not copied into executables ---
|
|
+the executable is written in such a way that it will automatically load the
|
|
+libraries. In linux, the executable will first load the special library
|
|
+@code{ld.so} or @code{ld-linux.so}, which contains the intelligence
|
|
+to load further dynamic libraries. Since multiple files end up getting
|
|
+executable data from the same file, dynamic libraries are also known as
|
|
+shared libraries.
|
|
+
|
|
+Linux executables come in two flavors, @sc{elf} and a.out.
|
|
+
|
|
+a.out is the original executable format used by Linux. It has somewhat less
|
|
+overhead than @sc{elf}. However creating shared libraries for a.out is
|
|
+@emph{very} involved, and each a.out shared library must be explicitly
|
|
+registered.
|
|
+
|
|
+@sc{elf} is a more recent format, which supports a much simpler method of
|
|
+creating libraries. @sc{elf} libraries may also be linked manually
|
|
+(@pxref{libdl}).
|
|
+
|
|
+Since many library authors prefer @sc{elf} and no longer release shared a.out
|
|
+libraries, a.out is moribund on Linux. This version of the @code{ld.so} can
|
|
+be compiled to support only @sc{elf}, or to support both formats. (The last
|
|
+release of ld.so to support a.out alone was 1.8.0.)
|
|
+
|
|
+@node ld.so
|
|
+@chapter @code{ld.so}: Dynamic linker core
|
|
+
|
|
+@code{ld.so} works behind the scenes to handle dynamic libraries in Linux.
|
|
+Users will almost never have to deal with it directly, but in special cases
|
|
+one can send instructions to it through environment variables. Also, if
|
|
+something is wrong with your libraries (usually an incorrect version) ld.so
|
|
+will give error messages.
|
|
+
|
|
+Actually @code{ld.so} is the a.out linker. The new @sc{elf} executables are
|
|
+handled by a related program @code{ld-linux.so}.
|
|
+
|
|
+@menu
|
|
+* files:: Configuration files used by the suite
|
|
+* environment:: Environment settings that tweak @code{ld.so}
|
|
+* errors:: Complaints @code{ld.so} might make
|
|
+@end menu
|
|
+
|
|
+@node files
|
|
+@section Configuration Files
|
|
+
|
|
+@table @file
|
|
+@item /etc/ld.so.cache
|
|
+A file created by @code{ldconfig} and used to speed linking. It's structure
|
|
+is private to the suite.
|
|
+
|
|
+@item /etc/ld.so.conf
|
|
+A simple list of directories to scan for libraries, in addition to
|
|
+@file{/usr/lib} and @file{/lib}, which are hardwired. It may contain
|
|
+comments started with a @samp{#}.
|
|
+
|
|
+@item /etc/ld.so.preload
|
|
+A list of libraries to preload. This allows preloading libraries for
|
|
+setuid/setgid executables securely. It may contain comments.
|
|
+@end table
|
|
+
|
|
+@node environment
|
|
+@section Environment Variables
|
|
+
|
|
+@table @code
|
|
+@item LD_AOUT_LIBRARY_PATH
|
|
+@itemx LD_LIBRARY_PATH
|
|
+These variables supply a library path for finding dynamic libraries, in the
|
|
+standard colon seperated format. These variables are ignored when executing
|
|
+setuid/setgid programs, because otherwise they would be a security hazard.
|
|
+@code{ld.so} will use @code{LD_AOUT_LIBRARY_PATH} and @code{ld-linux.so} will
|
|
+use @code{LD_LIBRARY_PATH}.
|
|
+
|
|
+@item LD_AOUT_PRELOAD
|
|
+@itemx LD_PRELOAD
|
|
+These variables allow an extra library not specified in the executable to be
|
|
+loaded. Generally this is only useful if you want to override a function.
|
|
+These are also ignored when running setuid/setgid executables. @code{ld.so}
|
|
+will use @code{LD_AOUT_PRELOAD} and @code{ld-linux.so} will use
|
|
+@code{LD_PRELOAD}.
|
|
+
|
|
+@item LD_NOWARN
|
|
+If non-empty, errors about incompatible minor revisions are suppressed.
|
|
+
|
|
+@item LD_KEEPDIR
|
|
+If non-empty, allow executables to specify absolute library names. This
|
|
+option is deprecated.
|
|
+@c FIXME:
|
|
+@c The following are things I noticed in the ld-linux.so source.
|
|
+@c I don't really understand 'em. Could someone help me?
|
|
+@c
|
|
+@c @item LD_BIND_NOW
|
|
+@c This option is used by the @code{ld-linux.so} only. I don't know
|
|
+@c what it does. (I suspect, looking at the code, that it specifies
|
|
+@c "RTLD_NOW" rather than "RTLD_LAZY" mode for the shared libraries.)
|
|
+@c
|
|
+@c @item LD_TRACE_LOADED_OBJECTS
|
|
+@c @itemx LD_WARN
|
|
+@c These seem to have something to do with the communication between the
|
|
+@c @code{ld-linux.so} and @code{ldd}. I don't know more.
|
|
+@end table
|
|
+
|
|
+@node errors
|
|
+@section Errors
|
|
+
|
|
+@table @samp
|
|
+@item Can't find library @var{library}
|
|
+The executable required a dynamically linked library that ld.so cannot find.
|
|
+Your symbolic links may be not set right, or you may have not installed a
|
|
+library needed by the program.
|
|
+
|
|
+@item Can't load library @var{library}
|
|
+The library is corrupt.
|
|
+
|
|
+@item Incompatible library @var{library}
|
|
+@itemx Require major version @var{x} and found @var{y}
|
|
+Your version of the library is incompatible with the executable. Recompiling
|
|
+the executable, or upgrading the library will fix the problem.
|
|
+
|
|
+@item using incompatible library @var{library}
|
|
+@itemx Desire minor version >= @var{x} and found @var{y}.
|
|
+Your version of the library is older than that expected by the executable,
|
|
+but not so old that the library interface has radically changed, so the
|
|
+linker will attempt to run anyway. There is a chance that it will work, but
|
|
+you should upgrade the library or recompile the software. The environment
|
|
+variable @code{LD_NOWARN} can be used to supress this message.
|
|
+
|
|
+@item too many directories in library path
|
|
+The linker only supports up to 32 library directories. You have too many.
|
|
+
|
|
+@item dynamic linker error in @var{blah}
|
|
+The linker is having trouble handling a binary - it is probably corrupt.
|
|
+
|
|
+@item can't map cache file @var{cache-file}
|
|
+@itemx cache file @var{cache-file} @var{blah}
|
|
+The linker cache file (generally @file{/etc/ld.so.cache}) is corrupt or
|
|
+non-existent. These errors can be ignored, and can be prevented by
|
|
+regenerating the cache file with @code{ldconfig}.
|
|
+@end table
|
|
+
|
|
+@node ldd
|
|
+@chapter @code{ldd}: Dependency scanner
|
|
+
|
|
+@code{ldd} is a utility that prints out the dynamic libraries that an
|
|
+executable is linked to.
|
|
+
|
|
+Actually @code{ldd} works by signalling ld.so to print the dependencies.
|
|
+For a.out executables this is done by starting the executable with
|
|
+@code{argc} equal to 0. The linker detects this and prints the dependencies.
|
|
+(This can cause problems with @emph{very} old binaries, which would run as
|
|
+normal only with an inappropriate @code{argc}.)
|
|
+
|
|
+For @sc{elf} executables, special environment variables are used to tell the
|
|
+linker to print the dependencies.
|
|
+
|
|
+@code{ldd} has a few options:
|
|
+
|
|
+@table @samp
|
|
+@item -v
|
|
+Print the version number of @code{ldd} itself
|
|
+
|
|
+@item -V
|
|
+Print the version number of the dynamic linker
|
|
+
|
|
+@item -d
|
|
+Report missing functions. This is only supported for @sc{elf} executables.
|
|
+
|
|
+@item -r
|
|
+Report missing objects. This is also only available for @sc{elf}
|
|
+executables.
|
|
+@end table
|
|
+
|
|
+@node ldconfig
|
|
+@chapter @code{ldconfig}: Setup program
|
|
+
|
|
+This utility is used by the system administrator to automatically set up
|
|
+symbolic links needed by the libraries, and also to set up the cache file.
|
|
+
|
|
+@code{ldconfig} is run after new dynamic libraries are installed, and if the
|
|
+cache file or links are damaged. It is also run when upgrading the
|
|
+@code{ld.so} suite itself.
|
|
+
|
|
+The @file{/lib} and @file{/usr/lib} directories, and any listed in the file
|
|
+@file{/etc/ld.so.conf} are scanned by default unless @samp{-n} is used.
|
|
+Additional directories may be specified on the command line.
|
|
+
|
|
+It has the following options:
|
|
+
|
|
+@table @samp
|
|
+@item -D
|
|
+Enter debug mode. Implies @samp{-N} and @samp{-X}.
|
|
+
|
|
+@item -v
|
|
+Verbose. Print out links created and directories scanned.
|
|
+
|
|
+@item -n
|
|
+Check directories specified on the commandline @emph{only}.
|
|
+
|
|
+@item -N
|
|
+Do not regenerate the cache.
|
|
+
|
|
+@item -X
|
|
+Do not rebuild symbolic links.
|
|
+
|
|
+@item -l
|
|
+Set up symbolic links for only libraries presented on the command line.
|
|
+
|
|
+@item -p
|
|
+Print out the library pathnames in the cache file (@file{/etc/ld.so.cache})
|
|
+@end table
|
|
+
|
|
+@node libdl
|
|
+@chapter User dynamic linking library
|
|
+
|
|
+The @code{ld.so} package includes a small library of functions
|
|
+(@code{libdl}) to allow manual dynamic linking. Normally programs are linked
|
|
+so that dynamic functions and objects are automagically available. These
|
|
+functions allow one to manually load and access a symbol from a library.
|
|
+They are only available for @sc{elf} executables.
|
|
+
|
|
+@menu
|
|
+* using libdl:: General points
|
|
+* functions:: How to use the functions
|
|
+* example:: A sample program
|
|
+@end menu
|
|
+
|
|
+@node using libdl
|
|
+@section Overview
|
|
+
|
|
+To access this library, add the flag @samp{-ldl} to your compile command when
|
|
+linking the executable. You also must include the header file
|
|
+@code{dlfcn.h}. You may also need the flag @samp{-rdynamic}, which enables
|
|
+resolving references in the loaded libraries against your executable.
|
|
+
|
|
+Generally, you will first use @code{dlopen} to open a library. Then you use
|
|
+@code{dlsym} one or more times to access symbols. Finally you use
|
|
+@code{dlclose} to close the library.
|
|
+
|
|
+These facilities are most useful for language interpreters that provide
|
|
+access to external libraries. Without @code{libdl}, it would be neccessary
|
|
+to link the interpreter executable with any and all external libraries
|
|
+needed by the programs it runs. With @code{libdl}, the interpreter only
|
|
+needs to be linked with the libraries it uses itself, and can dynamically
|
|
+load in additional ones if programs need it.
|
|
+
|
|
+@node functions
|
|
+@section Functions
|
|
+
|
|
+@deftypefun void *dlopen ( const char @var{filename}, int @var{flags} )
|
|
+
|
|
+This function opens the dynamic library specified by @var{filename}
|
|
+and returns an abstract handle, which can be used in subsequent calls to
|
|
+@code{dlsym}. The function will respect the @code{LD_ELF_LIBRARY_PATH} and
|
|
+@code{LD_LIBRARY_PATH} environment variables.
|
|
+
|
|
+@end deftypefun
|
|
+
|
|
+The following flags can be used with @code{dlopen}:
|
|
+
|
|
+@deftypevr Macro int RTLD_LAZY
|
|
+Resolve symbols in the library as they are needed.
|
|
+@end deftypevr
|
|
+
|
|
+@deftypevr Macro int RTLD_NOW
|
|
+Resolve all symbols in the library before returning, and fail if not all can
|
|
+be resolved. This is mutually exclusive with @code{RTLD_LAZY}.
|
|
+@end deftypevr
|
|
+
|
|
+@deftypevr Macro int RTLD_GLOBAL
|
|
+Make symbols in this library available for resolving symbols in other
|
|
+libraries loaded with @code{dlopen}.
|
|
+@end deftypevr
|
|
+
|
|
+@deftypefun int dlclose ( void *@var{handle} )
|
|
+
|
|
+This function releases a library handle.
|
|
+
|
|
+Note that if a library opened twice, the handle will be the same. However,
|
|
+a reference count is used, so you should still close the library as many
|
|
+times as you open it.
|
|
+
|
|
+@end deftypefun
|
|
+
|
|
+@deftypefun void *dlsym (void *@var{handle},char *@var{symbol-name})
|
|
+
|
|
+This function looks up the name @var{symbol-name} in the library and returns
|
|
+it in the void pointer.
|
|
+
|
|
+If there is an error, a null pointer will be returned. However, it is
|
|
+possible for a valid name in the library to have a null value, so
|
|
+@code{dlerror} should be used to check if there was an error.
|
|
+
|
|
+@end deftypefun
|
|
+
|
|
+@deftypefun {libdl function} {const char} *dlerror( void )
|
|
+
|
|
+This function is used to read the error state. It returns a human-readable
|
|
+string describing the last error, or null, meaning no error.
|
|
+
|
|
+The function resets the error value each time it is called, so the result
|
|
+should be copied into a variable. If the function is called more than once
|
|
+after an error, the second and subsequent calls will return null.
|
|
+
|
|
+@end deftypefun
|
|
+
|
|
+@node example
|
|
+@section Example program
|
|
+
|
|
+Here is an example program that prints the cosine of two by manually linking
|
|
+to the math library:
|
|
+
|
|
+@example
|
|
+@c The following was snarfed verbatim from the dlopen.3 man file.
|
|
+#include <stdio.h>
|
|
+#include <dlfcn.h>
|
|
+
|
|
+int main(int argc, char **argv) @{
|
|
+ void *handle;
|
|
+ double (*cosine)(double);
|
|
+ char *error;
|
|
+
|
|
+ handle = dlopen ("/lib/libm.so", RTLD_LAZY);
|
|
+ if (!handle) @{
|
|
+ fputs (dlerror(), stderr);
|
|
+ exit(1);
|
|
+ @}
|
|
+
|
|
+ cosine = dlsym(handle, "cos");
|
|
+ if ((error = dlerror()) != NULL) @{
|
|
+ fputs(error, stderr);
|
|
+ exit(1);
|
|
+ @}
|
|
+
|
|
+ printf ("%f\\n", (*cosine)(2.0));
|
|
+ dlclose(handle);
|
|
+@}
|
|
+@end example
|
|
+
|
|
+@contents
|
|
+
|
|
+@bye
|
|
diff -urN uClibc/ldso-0.9.24/man/ldconfig.8 uClibc.ldso.24/ldso-0.9.24/man/ldconfig.8
|
|
--- uClibc/ldso-0.9.24/man/ldconfig.8 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/man/ldconfig.8 2001-04-23 12:43:54.000000000 -0500
|
|
@@ -0,0 +1,189 @@
|
|
+.TH ldconfig 8 "14 March 1998"
|
|
+.SH NAME
|
|
+ldconfig \- determine run-time link bindings
|
|
+.SH SYNOPSIS
|
|
+ldconfig
|
|
+.RB [ \-DvqnNX ]
|
|
+.RB [ \-f\ conf ]
|
|
+.RB [ \-C\ cache ]
|
|
+.RB [ \-r\ root ]
|
|
+.IR directory \ ...
|
|
+.PD 0
|
|
+.PP
|
|
+.PD
|
|
+ldconfig
|
|
+.B \-l
|
|
+.RB [ \-Dvq ]
|
|
+.IR library \ ...
|
|
+.PD 0
|
|
+.PP
|
|
+.PD
|
|
+ldconfig
|
|
+.B \-p
|
|
+.SH DESCRIPTION
|
|
+.B ldconfig
|
|
+creates the necessary links and cache (for use by the run-time linker,
|
|
+.IR ld.so )
|
|
+to the most recent shared libraries found in the directories specified
|
|
+on the command line, in the file
|
|
+.IR /etc/ld.so.conf ,
|
|
+and in the trusted directories
|
|
+.RI ( /usr/lib
|
|
+and
|
|
+.IR /lib ).
|
|
+.B ldconfig
|
|
+checks the header and file names of the libraries it encounters when
|
|
+determining which versions should have their links updated.
|
|
+.B ldconfig
|
|
+ignores symbolic links when scanning for libraries.
|
|
+.PP
|
|
+.B ldconfig
|
|
+will attempt to deduce the type of ELF libs (ie. libc5 or libc6/glibc)
|
|
+based on what C libs if any the library was linked against, therefore when
|
|
+making dynamic libraries, it is wise to explicitly link against libc (use -lc).
|
|
+.PP
|
|
+Some existing libs do not contain enough information to allow the deduction of
|
|
+their type, therefore the
|
|
+.IR /etc/ld.so.conf
|
|
+file format allows the specification of an expected type. This is
|
|
+.B only
|
|
+used for those ELF libs which we can not work out. The format
|
|
+is like this "dirname=TYPE", where type can be libc4, libc5 or libc6.
|
|
+(This syntax also works on the command line). Spaces are
|
|
+.B not
|
|
+allowed. Also see the
|
|
+.B -p
|
|
+option.
|
|
+.PP
|
|
+Directory names containing an
|
|
+.B = are no longer legal
|
|
+unless they also have an expected type specifier.
|
|
+.PP
|
|
+.B ldconfig
|
|
+should normally be run by the super-user as it may require write
|
|
+permission on some root owned directories and files.
|
|
+It is normally run automatically at bootup, from /etc/rc, or manually
|
|
+whenever new DLL's are installed.
|
|
+.SH OPTIONS
|
|
+.TP
|
|
+.B \-D
|
|
+Debug mode.
|
|
+Implies
|
|
+.B \-N
|
|
+and
|
|
+.BR \-X .
|
|
+.TP
|
|
+.B \-v
|
|
+Verbose mode.
|
|
+Print current version number, the name of each directory as it
|
|
+is scanned and any links that are created.
|
|
+Overrides quiet mode.
|
|
+.TP
|
|
+.B \-q
|
|
+Quiet mode.
|
|
+Don't print warnings.
|
|
+.TP
|
|
+.B \-n
|
|
+Only process directories specified on the command line.
|
|
+Don't process the trusted directories
|
|
+.RI ( /usr/lib
|
|
+and
|
|
+.IR /lib )
|
|
+nor those specified in
|
|
+.IR /etc/ld.so.conf .
|
|
+Implies
|
|
+.BR \-N .
|
|
+.TP
|
|
+.B \-N
|
|
+Don't rebuild the cache.
|
|
+Unless
|
|
+.B \-X
|
|
+is also specified, links are still updated.
|
|
+.TP
|
|
+.B \-X
|
|
+Don't update links.
|
|
+Unless
|
|
+.B \-N
|
|
+is also specified, the cache is still rebuilt.
|
|
+.TP
|
|
+.B \-f conf
|
|
+Use
|
|
+.B conf
|
|
+instead of
|
|
+.IR /etc/ld.so.conf .
|
|
+.TP
|
|
+.B \-C cache
|
|
+Use
|
|
+.B cache
|
|
+instead of
|
|
+.IR /etc/ld.so.cache .
|
|
+.TP
|
|
+.B \-r root
|
|
+Change to and use
|
|
+.B root
|
|
+as the root directory.
|
|
+.TP
|
|
+.B \-l
|
|
+Library mode.
|
|
+Manually link individual libraries.
|
|
+Intended for use by experts only.
|
|
+.TP
|
|
+.B \-p
|
|
+Print the lists of directories and candidate libraries stored in
|
|
+the current cache.
|
|
+.SH EXAMPLES
|
|
+In the bootup file
|
|
+.I /etc/rc
|
|
+having the line
|
|
+.RS
|
|
+
|
|
+/sbin/ldconfig -v
|
|
+
|
|
+.RE
|
|
+will set up the correct links for the shared binaries and rebuild
|
|
+the cache.
|
|
+.TP
|
|
+On the command line
|
|
+.RS
|
|
+
|
|
+# /sbin/ldconfig -n /lib
|
|
+
|
|
+.RE
|
|
+as root after the installation of a new DLL, will properly update the
|
|
+shared library symbolic links in /lib.
|
|
+
|
|
+.SH FILES
|
|
+.PD 0
|
|
+.TP 20
|
|
+.B /lib/ld.so
|
|
+execution time linker/loader
|
|
+.TP 20
|
|
+.B /etc/ld.so.conf
|
|
+File containing a list of colon, space, tab, newline, or comma spearated
|
|
+directories in which to search for libraries.
|
|
+.TP 20
|
|
+.B /etc/ld.so.cache
|
|
+File containing an ordered list of libraries found in the directories
|
|
+specified in
|
|
+.BR /etc/ld.so.conf .
|
|
+.TP
|
|
+.B lib*.so.version
|
|
+shared libraries
|
|
+.PD
|
|
+.SH SEE ALSO
|
|
+.BR ldd (1),
|
|
+.BR ld.so (8).
|
|
+.SH BUGS
|
|
+.LP
|
|
+.BR ldconfig 's
|
|
+functionality, in conjunction with
|
|
+.BR ld.so ,
|
|
+is only available for executables compiled using libc version 4.4.3 or greater.
|
|
+.PP
|
|
+.BR ldconfig ,
|
|
+being a user process, must be run manually and has no means of dynamically
|
|
+determining and relinking shared libraries for use by
|
|
+.BR ld.so
|
|
+when a new DLL is installed.
|
|
+.SH AUTHORS
|
|
+David Engel and Mitch D'Souza.
|
|
diff -urN uClibc/ldso-0.9.24/man/ldd.1 uClibc.ldso.24/ldso-0.9.24/man/ldd.1
|
|
--- uClibc/ldso-0.9.24/man/ldd.1 1969-12-31 18:00:00.000000000 -0600
|
|
+++ uClibc.ldso.24/ldso-0.9.24/man/ldd.1 2001-04-23 12:43:54.000000000 -0500
|
|
@@ -0,0 +1,59 @@
|
|
+.\" Copyright 1995-2000 David Engel (david@ods.com)
|
|
+.\" Copyright 1995 Rickard E. Faith (faith@cs.unc.edu)
|
|
+.\" Most of this was copied from the README file. Do not restrict distribution.
|
|
+.\" May be distributed under the GNU General Public License
|
|
+.TH LDD 1 "14 March 1998"
|
|
+.SH NAME
|
|
+ldd \- print shared library dependencies
|
|
+.SH SYNOPSIS
|
|
+.B ldd
|
|
+.RB [ \-vVdr ]
|
|
+program|library ...
|
|
+.SH DESCRIPTION
|
|
+.B ldd
|
|
+prints the shared libraries required by each program or shared library
|
|
+specified on the command line.
|
|
+If a shared library name does not contain a '/',
|
|
+.B ldd
|
|
+attempts to locate the library in the standard locations.
|
|
+To run
|
|
+.B ldd
|
|
+on a shared library in the current directory, a "./" must be prepended
|
|
+to its name.
|
|
+.SH OPTIONS
|
|
+.TP
|
|
+.B \-v
|
|
+Print the version number of
|
|
+.BR ldd .
|
|
+.TP
|
|
+.B \-V
|
|
+Print the version number of the dynamic linker,
|
|
+.BR ld.so .
|
|
+.TP
|
|
+.B \-d
|
|
+Perform relocations and report any missing functions (ELF only).
|
|
+.TP
|
|
+.B \-r
|
|
+Perform relocations for both data objects and functions, and
|
|
+report any missing objects (ELF only).
|
|
+.SH BUGS
|
|
+.B ldd
|
|
+does not work very well on libc.so.5 itself.
|
|
+.PP
|
|
+.B ldd
|
|
+does not work on a.out shared libraries.
|
|
+.PP
|
|
+.B ldd
|
|
+does not work with some extremely old a.out programs which were
|
|
+built before
|
|
+.B ldd
|
|
+support was added to the compiler releases.
|
|
+If you use
|
|
+.B ldd
|
|
+on one of these programs, the program will attempt to run with argc = 0 and
|
|
+the results will be unpredictable.
|
|
+.SH AUTHOR
|
|
+David Engel.
|
|
+.SH SEE ALSO
|
|
+.BR ldconfig (8),
|
|
+.BR ld.so (8).
|