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authorIan Lance Taylor <ian@airs.com>1999-09-06 18:34:29 +0000
committerIan Lance Taylor <ian@airs.com>1999-09-06 18:34:29 +0000
commit022a5af4953fbd647da3b6bbd22f75202184d361 (patch)
tree99031825de25d6dfac16facdb7a569b96bf77dcb
parent0d271c1a5ef4a04ee26ebbfa9270a82a28f83b68 (diff)
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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.
-rw-r--r--bfd/ChangeLog8
-rw-r--r--bfd/bfd-in2.h25
-rw-r--r--bfd/section.c50
3 files changed, 80 insertions, 3 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index a9c07d1..d5d95da 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -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
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index f79438e..ec82e0c 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -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 */
diff --git a/bfd/section.c b/bfd/section.c
index eb251b4..e2ca443 100644
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -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