60 lines
2.2 KiB
Diff
60 lines
2.2 KiB
Diff
|
From: cgd at broadcom dot com
|
||
|
|
To: gcc-patches at gcc dot gnu dot org
|
||
|
|
Cc: mark at codesourcery dot com
|
||
|
|
Date: 13 Jun 2004 22:51:30 -0700
|
||
|
|
Subject: [trunk + 3.4-branch RFA] don't use empic relocs for mips-linuxeh
|
||
|
|
|
||
|
|
This patch changes mips-linux to avoid using embedded-pic relocs for
|
||
|
|
its eh data. (Support for generating these for new code is removed in
|
||
|
|
current binutils srcs.)
|
||
|
|
|
||
|
|
Relating to this, previously, mips-linux and mips64-linux would use
|
||
|
|
different representations for their EH data (even for mips64-linux o32
|
||
|
|
abi), due to the mips64-linux n32/64 BFDs not supporting the
|
||
|
|
embedded-pic relocs. This was a bug.
|
||
|
|
|
||
|
|
For more explanation, see the thread of the URL quoted in the comment
|
||
|
|
in linux.h.
|
||
|
|
|
||
|
|
|
||
|
|
Tested the same w/ sources of about a week ago for c/c++ for
|
||
|
|
mips-linux (native) before/after. Also verified .o compatibility
|
||
|
|
before/after just to be sure.
|
||
|
|
|
||
|
|
I'd like this approved for the branch as well, so 3.4.1 will work
|
||
|
|
nicely w/ the next major binutils release.
|
||
|
|
|
||
|
|
|
||
|
|
thanks,
|
||
|
|
|
||
|
|
chris
|
||
|
|
|
||
|
|
2004-06-13 Chris Demetriou <cgd@broadcom.com>
|
||
|
|
|
||
|
|
* config/mips/linux.h (ASM_PREFERRED_EH_DATA_FORMAT): Redefine
|
||
|
|
to return DW_EH_PE_absptr.
|
||
|
|
|
||
|
|
Index: config/mips/linux.h
|
||
|
|
===================================================================
|
||
|
|
RCS file: /cvs/gcc/gcc/gcc/config/mips/linux.h,v
|
||
|
|
retrieving revision 1.77
|
||
|
|
diff -u -p -r1.77 linux.h
|
||
|
|
--- gcc/gcc/config/mips/linux.h 19 Feb 2004 22:07:51 -0000 1.77
|
||
|
|
+++ gcc/gcc/config/mips/linux.h 14 Jun 2004 05:49:51 -0000
|
||
|
|
@@ -170,10 +170,11 @@ Boston, MA 02111-1307, USA. */
|
||
|
|
#undef FUNCTION_NAME_ALREADY_DECLARED
|
||
|
|
#define FUNCTION_NAME_ALREADY_DECLARED 1
|
||
|
|
|
||
|
|
-#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
|
||
|
|
- (flag_pic \
|
||
|
|
- ? ((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\
|
||
|
|
- : DW_EH_PE_absptr)
|
||
|
|
+/* If possible, we should attempt to use GP-relative relocs for this
|
||
|
|
+ (see <a href="http://sources.redhat.com/ml/binutils/2004-05/msg00227.html">http://sources.redhat.com/ml/binutils/2004-05/msg00227.html</a>).
|
||
|
|
+ However, until that is implement, this just uses standard, absolute
|
||
|
|
+ references. */
|
||
|
|
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) DW_EH_PE_absptr
|
||
|
|
|
||
|
|
/* The glibc _mcount stub will save $v0 for us. Don't mess with saving
|
||
|
|
it, since ASM_OUTPUT_REG_PUSH/ASM_OUTPUT_REG_POP do not work in the
|