* bfd-elf.h (elf_backend_name_local_section_symbols): New hook.
* elf.c (swap_out_syms): Use it to decide whether local section symbols should be named. * elfxx-target.h (elf_backend_name_local_section_symbols): New macro. * elfxx-mips.h (_bfd_mips_elf_name_local_section_symbols): Declare. (elf_backend_name_local_section_symbols): Define. * elfxx-mips.c (_bfd_mips_elf_name_local_section_symbols): New.
This commit is contained in:
Richard Sandiford
parent
edfae06341
commit
174fd7f955
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@ -1,3 +1,13 @@
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2004-02-09 Richard Sandiford <rsandifo@redhat.com>
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* bfd-elf.h (elf_backend_name_local_section_symbols): New hook.
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* elf.c (swap_out_syms): Use it to decide whether local section
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symbols should be named.
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* elfxx-target.h (elf_backend_name_local_section_symbols): New macro.
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* elfxx-mips.h (_bfd_mips_elf_name_local_section_symbols): Declare.
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(elf_backend_name_local_section_symbols): Define.
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* elfxx-mips.c (_bfd_mips_elf_name_local_section_symbols): New.
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2004-01-30 H.J. Lu <hongjiu.lu@intel.com>
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* elfxx-ia64.c (elfNN_ia64_relax_brl): New function.
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@ -576,6 +576,11 @@ struct elf_backend_data
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int (*elf_backend_get_symbol_type)
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(Elf_Internal_Sym *, int);
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/* Return true if local section symbols should have a non-null st_name.
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NULL implies false. */
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bfd_boolean (*elf_backend_name_local_section_symbols)
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(bfd *);
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/* A function to do additional processing on the ELF section header
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just before writing it out. This is used to set the flags and
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type fields for some sections, or to actually write out data for
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@ -5261,6 +5261,7 @@ swap_out_syms (bfd *abfd,
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char *outbound_shndx;
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int idx;
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bfd_size_type amt;
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bfd_boolean name_local_sections;
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if (!elf_map_symbols (abfd))
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return FALSE;
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@ -5326,6 +5327,10 @@ swap_out_syms (bfd *abfd,
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outbound_shndx += sizeof (Elf_External_Sym_Shndx);
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}
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name_local_sections
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= (bed->elf_backend_name_local_section_symbols
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&& bed->elf_backend_name_local_section_symbols (abfd));
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syms = bfd_get_outsymbols (abfd);
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for (idx = 0; idx < symcount; idx++)
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{
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@ -5335,7 +5340,8 @@ swap_out_syms (bfd *abfd,
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flagword flags = syms[idx]->flags;
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int type;
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if ((flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
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if (!name_local_sections
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&& (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
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{
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/* Local section symbols have no name. */
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sym.st_name = 0;
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@ -4271,6 +4271,26 @@ _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym)
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}
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}
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/* There appears to be a bug in the MIPSpro linker that causes GOT_DISP
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relocations against two unnamed section symbols to resolve to the
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same address. For example, if we have code like:
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lw $4,%got_disp(.data)($gp)
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lw $25,%got_disp(.text)($gp)
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jalr $25
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then the linker will resolve both relocations to .data and the program
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will jump there rather than to .text.
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We can work around this problem by giving names to local section symbols.
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This is also what the MIPSpro tools do. */
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bfd_boolean
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_bfd_mips_elf_name_local_section_symbols (bfd *abfd)
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{
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return SGI_COMPAT (abfd);
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}
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/* Work over a section just before writing it out. This routine is
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used by both the 32-bit and the 64-bit ABI. FIXME: We recognize
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sections that need the SHF_MIPS_GPREL flag by name; there has to be
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@ -24,6 +24,8 @@ extern bfd_boolean _bfd_mips_elf_new_section_hook
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(bfd *, asection *);
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extern void _bfd_mips_elf_symbol_processing
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(bfd *, asymbol *);
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extern bfd_boolean _bfd_mips_elf_name_local_section_symbols
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(bfd *);
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extern bfd_boolean _bfd_mips_elf_section_processing
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(bfd *, Elf_Internal_Shdr *);
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extern bfd_boolean _bfd_mips_elf_section_from_shdr
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@ -119,4 +121,6 @@ extern bfd_vma _bfd_mips_elf_sign_extend
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(bfd_vma, int);
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extern struct bfd_elf_special_section const _bfd_mips_elf_special_sections[];
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#define elf_backend_name_local_section_symbols \
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_bfd_mips_elf_name_local_section_symbols
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#define elf_backend_special_sections _bfd_mips_elf_special_sections
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@ -274,6 +274,9 @@
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#ifndef elf_backend_get_symbol_type
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#define elf_backend_get_symbol_type 0
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#endif
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#ifndef elf_backend_name_local_section_symbols
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#define elf_backend_name_local_section_symbols 0
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#endif
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#ifndef elf_backend_section_processing
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#define elf_backend_section_processing 0
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#endif
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@ -456,6 +459,7 @@ static const struct elf_backend_data elfNN_bed =
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elf_backend_symbol_processing,
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elf_backend_symbol_table_processing,
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elf_backend_get_symbol_type,
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elf_backend_name_local_section_symbols,
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elf_backend_section_processing,
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elf_backend_section_from_shdr,
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elf_backend_section_flags,
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