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* elf32-mips.c (mips_elf_calculate_relocation): Undefined weak

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symbols are considered to have the value zero.
	(_bfd_mips_elf_relocate_section): Don't try to perform a
	relocation for an undefined symbol.
	(_bfd_mips_elf_check_relocs): Allocate locate GOT space for local
	GOT16 relocations.
This commit is contained in:
Mark Mitchell 1999-08-01 20:58:19 +00:00
parent a11c78e7dd
commit 972875741c
2 changed files with 26 additions and 8 deletions
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9
bfd/ChangeLog
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@ -1,3 +1,12 @@
1999-08-01 Mark Mitchell <mark@codesourcery.com>
* elf32-mips.c (mips_elf_calculate_relocation): Undefined weak
symbols are considered to have the value zero.
(_bfd_mips_elf_relocate_section): Don't try to perform a
relocation for an undefined symbol.
(_bfd_mips_elf_check_relocs): Allocate locate GOT space for local
GOT16 relocations.
1999-07-30 Jakub Jelinek <jj@ultra.linux.cz>
* elf64-sparc.c (sparc64_elf_build_plt): Cosmetic change - ABI

25
bfd/elf32-mips.c
View File

@ -5870,6 +5870,12 @@ mips_elf_calculate_relocation (abfd,
else
symbol = h->root.root.u.def.value;
}
else if (h->root.root.type == bfd_link_hash_undefweak)
/* We allow relocations against undefined weak symbols, giving
it the value zero, so that you can undefined weak functions
and check to see if they exist by looking at their
addresses. */
symbol = 0;
else
{
(*info->callbacks->undefined_symbol)
@ -6637,8 +6643,10 @@ _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
case bfd_reloc_undefined:
/* mips_elf_calculate_relocation already called the
undefined_symbol callback. */
break;
undefined_symbol callback. There's no real point in
trying to perform the relocation at this point, so we
just skip ahead to the next relocation. */
continue;
case bfd_reloc_notsupported:
abort ();
@ -7331,14 +7339,15 @@ _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
if (!h && (r_type == R_MIPS_CALL_LO16
|| r_type == R_MIPS_GOT_LO16
|| r_type == R_MIPS_GOT_DISP))
|| r_type == R_MIPS_GOT_DISP
|| r_type == R_MIPS_GOT16))
{
/* We may need a local GOT entry for this relocation. We
don't count R_MIPS_HI16 or R_MIPS_GOT16 relocations
because they are always followed by a R_MIPS_LO16
relocation for the value. We don't R_MIPS_GOT_PAGE
because we can estimate the maximum number of pages
needed by looking at the size of the segment.
don't count R_MIPS_GOT_PAGE because we can estimate the
maximum number of pages needed by looking at the size of
the segment. We don't count R_MIPS_GOT_HI16, or
R_MIPS_CALL_HI16 because these are always followed by an
R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16.
This estimation is very conservative since we can merge
duplicate entries in the GOT. In order to be less