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Code

disable a totally braindead optimization in busybox that causes various applets to crash on mips

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9532 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2007-11-10 22:56:55 +00:00
parent 5925d4c0b5
commit 6fa2f82203
1 changed files with 40 additions and 0 deletions
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40
package/busybox/patches/480-disable_braindead_optimization.patch Normal file
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@ -0,0 +1,40 @@
Index: busybox-1.8.1/editors/awk.c
===================================================================
--- busybox-1.8.1.orig/editors/awk.c 2007-11-10 23:53:16.950053243 +0100
+++ busybox-1.8.1/editors/awk.c 2007-11-10 23:53:23.422422084 +0100
@@ -446,7 +446,7 @@
tsplitter fsplitter, rsplitter;
};
#define G1 (ptr_to_globals[-1])
-#define G (*(struct globals2 *const)ptr_to_globals)
+#define G (*(struct globals2 *)ptr_to_globals)
/* For debug. nm --size-sort awk.o | grep -vi ' [tr] ' */
/* char G1size[sizeof(G1)]; - 0x6c */
/* char Gsize[sizeof(G)]; - 0x1cc */
Index: busybox-1.8.1/include/libbb.h
===================================================================
--- busybox-1.8.1.orig/include/libbb.h 2007-11-10 23:53:38.135260518 +0100
+++ busybox-1.8.1/include/libbb.h 2007-11-10 23:54:15.773405393 +0100
@@ -1111,8 +1111,10 @@
struct globals;
/* '*const' ptr makes gcc optimize code much better.
* Magic prevents ptr_to_globals from going into rodata.
- * If you want to assign a value, use PTR_TO_GLOBALS = xxx */
-extern struct globals *const ptr_to_globals;
+ * If you want to assign a value, use PTR_TO_GLOBALS = xxx
+ * unfortunately the above hack doesn't work properly :P
+ */
+extern struct globals *ptr_to_globals;
#define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals)
Index: busybox-1.8.1/libbb/messages.c
===================================================================
--- busybox-1.8.1.orig/libbb/messages.c 2007-11-10 23:52:47.116353117 +0100
+++ busybox-1.8.1/libbb/messages.c 2007-11-10 23:52:57.752959269 +0100
@@ -74,4 +74,4 @@
struct globals;
/* Make it reside in R/W memory: */
-struct globals *const ptr_to_globals __attribute__ ((section (".data")));
+struct globals *ptr_to_globals __attribute__ ((section (".data")));