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1999-09-06 Donn Terry <donn@interix.com>

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* section.c (struct bfd_comdat_info): Define.
	(asection): Add comdat field.
	(STD_SECTION): Initialize comdat field.
	(bfd_make_section_anyway): Likewise.
	* bfd-in2.h: Rebuild.
This commit is contained in:
Ian Lance Taylor 1999-09-06 18:34:29 +00:00
parent 0d271c1a5e
commit 022a5af495
3 changed files with 80 additions and 3 deletions
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8
bfd/ChangeLog
View File

@ -1,3 +1,11 @@
1999-09-06 Donn Terry <donn@interix.com>
* section.c (struct bfd_comdat_info): Define.
(asection): Add comdat field.
(STD_SECTION): Initialize comdat field.
(bfd_make_section_anyway): Likewise.
* bfd-in2.h: Rebuild.
1999-09-06 Andreas Schwab <schwab@suse.de>
* elflink.h (elf_link_add_object_symbols): Copy NON_GOT_REF flag

25
bfd/bfd-in2.h
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@ -847,6 +847,27 @@ bfd_make_readable PARAMS ((bfd *abfd));
#define bfd_h_get_signed_64(abfd, ptr) \
BFD_SEND(abfd, bfd_h_getx_signed_64, (ptr))
/* This structure is used for a comdat section, as in PE. A comdat
section is associated with a particular symbol. When the linker
sees a comdat section, it keeps only one of the sections with a
given name and associated with a given symbol. */
struct bfd_comdat_info
{
/* The name of the symbol associated with a comdat section. */
const char *name;
/* The local symbol table index of the symbol associated with a
comdat section. This is only meaningful to the object file format
specific code; it is not an index into the list returned by
bfd_canonicalize_symtab. */
long symbol;
/* If this section is being discarded, the linker uses this field
to point to the input section which is being kept. */
struct sec *sec;
};
typedef struct sec
{
/* The name of the section; the name isn't a copy, the pointer is
@ -1118,6 +1139,10 @@ typedef struct sec
unsigned int lineno_count;
/* Optional information about a COMDAT entry; NULL if not COMDAT */
struct bfd_comdat_info *comdat;
/* When a section is being output, this value changes as more
linenumbers are written out */

50
bfd/section.c
View File

@ -150,6 +150,27 @@ SUBSECTION
CODE_FRAGMENT
.
. {* This structure is used for a comdat section, as in PE. A comdat
. section is associated with a particular symbol. When the linker
. sees a comdat section, it keeps only one of the sections with a
. given name and associated with a given symbol. *}
.
.struct bfd_comdat_info
.{
. {* The name of the symbol associated with a comdat section. *}
. const char *name;
.
. {* The local symbol table index of the symbol associated with a
. comdat section. This is only meaningful to the object file format
. specific code; it is not an index into the list returned by
. bfd_canonicalize_symtab. *}
. long symbol;
.
. {* If this section is being discarded, the linker uses this field
. to point to the input section which is being kept. *}
. struct sec *sec;
.};
.
.typedef struct sec
.{
. {* The name of the section; the name isn't a copy, the pointer is
@ -421,6 +442,10 @@ CODE_FRAGMENT
.
. unsigned int lineno_count;
.
. {* Optional information about a COMDAT entry; NULL if not COMDAT *}
.
. struct bfd_comdat_info *comdat;
.
. {* When a section is being output, this value changes as more
. linenumbers are written out *}
.
@ -511,9 +536,27 @@ static const asymbol global_syms[] =
#define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX) \
const asymbol * const SYM = (asymbol *) &global_syms[IDX]; \
const asection SEC = \
{ NAME, 0, 0, FLAGS, 0, 0, 0, 0, 0, 0, 0, 0, 0, (asection *) &SEC, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
(asymbol *) &global_syms[IDX], (asymbol **) &SYM, 0, 0 }
/* name, index, next, flags, set_vma, reloc_done, linker_mark, gc_mark */ \
{ NAME, 0, 0, FLAGS, 0, 0, 0, 0, \
\
/* vma, lma, _cooked_size, _raw_size, output_offset, output_section, */ \
0, 0, 0, 0, 0, (struct sec *) &SEC, \
\
/* alig..., reloc..., orel..., reloc_count, filepos, rel_..., line_... */ \
0, 0, 0, 0, 0, 0, 0, \
\
/* userdata, contents, lineno, lineno_count */ \
0, 0, 0, 0, \
\
/* comdat_info, moving_line_filepos, target_index, used_by_bfd, */ \
NULL, 0, 0, 0, \
\
/* cons..., owner, symbol */ \
0, 0, (struct symbol_cache_entry *) &global_syms[IDX], \
\
/* symbol_ptr_ptr, link_order_head, ..._tail */ \
(struct symbol_cache_entry **) &SYM, 0, 0 \
}
STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol,
BFD_COM_SECTION_NAME, 0);
@ -656,6 +699,7 @@ bfd_make_section_anyway (abfd, name)
newsect->reloc_count = 0;
newsect->line_filepos = 0;
newsect->owner = abfd;
newsect->comdat = NULL;
/* Create a symbol whos only job is to point to this section. This is
useful for things like relocs which are relative to the base of a