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* elflink.h (elf_bfd_final_link): Don't output initial dummy 

symbol or section symbols if stripping all symbols and this is not
	a relocateable link.  Don't output the symbol string table if
	there are no symbols.
	(elf_link_flush_output_syms): Don't do anything if there are no
	symbols to flush.
This commit is contained in:
Ian Lance Taylor 1996-01-31 21:22:02 +00:00
parent 44e9f3b3d3
commit 28c16b5525
2 changed files with 54 additions and 33 deletions
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9
bfd/ChangeLog
View File

@ -1,3 +1,12 @@
Wed Jan 31 16:16:53 1996 Ian Lance Taylor <ian@cygnus.com>
* elflink.h (elf_bfd_final_link): Don't output initial dummy
symbol or section symbols if stripping all symbols and this is not
a relocateable link. Don't output the symbol string table if
there are no symbols.
(elf_link_flush_output_syms): Don't do anything if there are no
symbols to flush.
Wed Jan 31 12:55:49 1996 Richard Henderson <rth@tamu.edu>
* coff-aux.c: New file.

78
bfd/elflink.h
View File

@ -1888,14 +1888,17 @@ elf_bfd_final_link (abfd, info)
/* Start writing out the symbol table. The first symbol is always a
dummy symbol. */
elfsym.st_value = 0;
elfsym.st_size = 0;
elfsym.st_info = 0;
elfsym.st_other = 0;
elfsym.st_shndx = SHN_UNDEF;
if (! elf_link_output_sym (&finfo, (const char *) NULL,
&elfsym, bfd_und_section_ptr))
goto error_return;
if (info->strip != strip_all || info->relocateable)
{
elfsym.st_value = 0;
elfsym.st_size = 0;
elfsym.st_info = 0;
elfsym.st_other = 0;
elfsym.st_shndx = SHN_UNDEF;
if (! elf_link_output_sym (&finfo, (const char *) NULL,
&elfsym, bfd_und_section_ptr))
goto error_return;
}
#if 0
/* Some standard ELF linkers do this, but we don't because it causes
@ -1918,19 +1921,22 @@ elf_bfd_final_link (abfd, info)
symbols have no names. We store the index of each one in the
index field of the section, so that we can find it again when
outputting relocs. */
elfsym.st_value = 0;
elfsym.st_size = 0;
elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
elfsym.st_other = 0;
for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
if (info->strip != strip_all || info->relocateable)
{
o = section_from_elf_index (abfd, i);
if (o != NULL)
o->target_index = abfd->symcount;
elfsym.st_shndx = i;
if (! elf_link_output_sym (&finfo, (const char *) NULL,
&elfsym, o))
goto error_return;
elfsym.st_value = 0;
elfsym.st_size = 0;
elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
elfsym.st_other = 0;
for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
{
o = section_from_elf_index (abfd, i);
if (o != NULL)
o->target_index = abfd->symcount;
elfsym.st_shndx = i;
if (! elf_link_output_sym (&finfo, (const char *) NULL,
&elfsym, o))
goto error_return;
}
}
/* Allocate some memory to hold information read in from the input
@ -2051,9 +2057,12 @@ elf_bfd_final_link (abfd, info)
off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, true);
elf_tdata (abfd)->next_file_pos = off;
if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
|| ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
return false;
if (abfd->symcount > 0)
{
if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
|| ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
return false;
}
/* Adjust the relocs to have the correct symbol indices. */
for (o = abfd->sections; o != NULL; o = o->next)
@ -2369,20 +2378,23 @@ static boolean
elf_link_flush_output_syms (finfo)
struct elf_final_link_info *finfo;
{
Elf_Internal_Shdr *symtab;
if (finfo->symbuf_count > 0)
{
Elf_Internal_Shdr *symtab;
symtab = &elf_tdata (finfo->output_bfd)->symtab_hdr;
symtab = &elf_tdata (finfo->output_bfd)->symtab_hdr;
if (bfd_seek (finfo->output_bfd, symtab->sh_offset + symtab->sh_size,
SEEK_SET) != 0
|| (bfd_write ((PTR) finfo->symbuf, finfo->symbuf_count,
sizeof (Elf_External_Sym), finfo->output_bfd)
!= finfo->symbuf_count * sizeof (Elf_External_Sym)))
return false;
if (bfd_seek (finfo->output_bfd, symtab->sh_offset + symtab->sh_size,
SEEK_SET) != 0
|| (bfd_write ((PTR) finfo->symbuf, finfo->symbuf_count,
sizeof (Elf_External_Sym), finfo->output_bfd)
!= finfo->symbuf_count * sizeof (Elf_External_Sym)))
return false;
symtab->sh_size += finfo->symbuf_count * sizeof (Elf_External_Sym);
symtab->sh_size += finfo->symbuf_count * sizeof (Elf_External_Sym);
finfo->symbuf_count = 0;
finfo->symbuf_count = 0;
}
return true;
}