mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-18 12:32:48 +02:00
cc81d3493e
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14554 3c298f89-4303-0410-b956-a3cf2f4a3e73
120 lines
3.6 KiB
Diff
120 lines
3.6 KiB
Diff
By Lennert Buytenhek <buytenh@wantstofly.org>
|
|
Adds support for arm*b-linux* big-endian ARM targets
|
|
|
|
See http://gcc.gnu.org/PR16350
|
|
|
|
--- a/gcc/config/arm/linux-elf.h
|
|
+++ b/gcc/config/arm/linux-elf.h
|
|
@@ -28,19 +28,33 @@
|
|
#undef TARGET_VERSION
|
|
#define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
|
|
|
|
+/*
|
|
+ * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
|
|
+ * (big endian) configurations.
|
|
+ */
|
|
+#if TARGET_BIG_ENDIAN_DEFAULT
|
|
+#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
|
|
+#define TARGET_ENDIAN_OPTION "mbig-endian"
|
|
+#define TARGET_LINKER_EMULATION "armelfb_linux"
|
|
+#else
|
|
+#define TARGET_ENDIAN_DEFAULT 0
|
|
+#define TARGET_ENDIAN_OPTION "mlittle-endian"
|
|
+#define TARGET_LINKER_EMULATION "armelf_linux"
|
|
+#endif
|
|
+
|
|
#undef TARGET_DEFAULT_FLOAT_ABI
|
|
#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
|
|
|
|
#undef TARGET_DEFAULT
|
|
-#define TARGET_DEFAULT (0)
|
|
+#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
|
|
|
|
#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
|
|
|
|
-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
|
|
+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
|
|
|
|
#undef MULTILIB_DEFAULTS
|
|
#define MULTILIB_DEFAULTS \
|
|
- { "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
|
|
+ { "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" }
|
|
|
|
/* Now we define the strings used to build the spec file. */
|
|
#undef LIB_SPEC
|
|
@@ -65,7 +79,7 @@
|
|
%{rdynamic:-export-dynamic} \
|
|
%{!dynamic-linker:-dynamic-linker " LINUX_TARGET_INTERPRETER "} \
|
|
-X \
|
|
- %{mbig-endian:-EB}" \
|
|
+ %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
|
|
SUBTARGET_EXTRA_LINK_SPEC
|
|
|
|
#undef LINK_SPEC
|
|
--- a/gcc/config.gcc
|
|
+++ b/gcc/config.gcc
|
|
@@ -672,6 +672,11 @@ arm*-*-netbsd*)
|
|
;;
|
|
arm*-*-linux*) # ARM GNU/Linux with ELF
|
|
tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
|
|
+ case $target in
|
|
+ arm*b-*)
|
|
+ tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
|
|
+ ;;
|
|
+ esac
|
|
tmake_file="${tmake_file} t-linux arm/t-arm"
|
|
case ${target} in
|
|
arm*-*-linux-gnueabi | arm*-*-linux-uclibcgnueabi)
|
|
--- a/gcc/config/arm/linux-eabi.h
|
|
+++ b/gcc/config/arm/linux-eabi.h
|
|
@@ -20,6 +20,17 @@
|
|
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
+/*
|
|
+ * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
|
|
+ * (big endian) configurations.
|
|
+ */
|
|
+#undef TARGET_LINKER_EMULATION
|
|
+#if TARGET_BIG_ENDIAN_DEFAULT
|
|
+#define TARGET_LINKER_EMULATION "armelfb_linux_eabi"
|
|
+#else
|
|
+#define TARGET_LINKER_EMULATION "armelf_linux_eabi"
|
|
+#endif
|
|
+
|
|
/* On EABI GNU/Linux, we want both the BPABI builtins and the
|
|
GNU/Linux builtins. */
|
|
#undef TARGET_OS_CPP_BUILTINS
|
|
@@ -48,7 +59,7 @@
|
|
#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
|
|
|
|
#undef SUBTARGET_EXTRA_LINK_SPEC
|
|
-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
|
|
+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
|
|
|
|
/* Use ld-linux.so.3 so that it will be possible to run "classic"
|
|
GNU/Linux binaries on an EABI system. */
|
|
--- a/gcc/config/arm/bpabi.h
|
|
+++ b/gcc/config/arm/bpabi.h
|
|
@@ -33,9 +33,19 @@
|
|
#undef FPUTYPE_DEFAULT
|
|
#define FPUTYPE_DEFAULT FPUTYPE_VFP
|
|
|
|
+/*
|
|
+ * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
|
|
+ * (big endian) configurations.
|
|
+ */
|
|
+#if TARGET_BIG_ENDIAN_DEFAULT
|
|
+#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
|
|
+#else
|
|
+#define TARGET_ENDIAN_DEFAULT 0
|
|
+#endif
|
|
+
|
|
/* EABI targets should enable interworking by default. */
|
|
#undef TARGET_DEFAULT
|
|
-#define TARGET_DEFAULT MASK_INTERWORK
|
|
+#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
|
|
|
|
/* The ARM BPABI functions return a boolean; they use no special
|
|
calling convention. */
|