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