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rs6000.h (ASM_OUTPUT_WEAKREF): Define.

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* config/rs6000/rs6000.h (ASM_OUTPUT_WEAKREF): Define.
* defaults.h (ASM_OUTPUT_WEAKREF): Add decl argument.
* varasm.c (do_assemble_alias): Adjust call.
(weak_finish): Don't use ASM_WEAKEN_LABEL if ASM_WEAKEN_DECL
is defined.
* doc/tm.texi (ASM_OUTPUT_WEAKREF): Document it.

From-SVN: r107156
This commit is contained in:
Alexandre Oliva 2005-11-18 01:55:34 +00:00 committed by Alexandre Oliva
parent ebb23329cd
commit ff2d10c1e4
5 changed files with 41 additions and 3 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2005-11-17 Alexandre Oliva <aoliva@redhat.com>
* config/rs6000/rs6000.h (ASM_OUTPUT_WEAKREF): Define.
* defaults.h (ASM_OUTPUT_WEAKREF): Add decl argument.
* varasm.c (do_assemble_alias): Adjust call.
(weak_finish): Don't use ASM_WEAKEN_LABEL if ASM_WEAKEN_DECL
is defined.
* doc/tm.texi (ASM_OUTPUT_WEAKREF): Document it.
2005-11-17 James E Wilson <wilson@specifix.com>
* tree.def (FUNCTION_DECL): Correct typo in comment.

20
gcc/config/rs6000/rs6000.h
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@ -2033,6 +2033,26 @@ extern int toc_initialized;
while (0)
#endif
#if HAVE_GAS_WEAKREF
#define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
do \
{ \
fputs ("\t.weakref\t", (FILE)); \
RS6000_OUTPUT_BASENAME ((FILE), (NAME)); \
fputs (", ", (FILE)); \
RS6000_OUTPUT_BASENAME ((FILE), (VALUE)); \
if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL \
&& DEFAULT_ABI == ABI_AIX && DOT_SYMBOLS) \
{ \
fputs ("\n\t.weakref\t.", (FILE)); \
RS6000_OUTPUT_BASENAME ((FILE), (NAME)); \
fputs (", .", (FILE)); \
RS6000_OUTPUT_BASENAME ((FILE), (VALUE)); \
} \
fputc ('\n', (FILE)); \
} while (0)
#endif
/* This implements the `alias' attribute. */
#undef ASM_OUTPUT_DEF_FROM_DECLS
#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \

2
gcc/defaults.h
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@ -174,7 +174,7 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
the latter is referenced directly, a strong reference prevails. */
#ifndef ASM_OUTPUT_WEAKREF
#if defined HAVE_GAS_WEAKREF
#define ASM_OUTPUT_WEAKREF(FILE, NAME, VALUE) \
#define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
do \
{ \
fprintf ((FILE), "\t.weakref\t"); \

6
gcc/doc/tm.texi
View File

@ -6766,6 +6766,12 @@ defines (equates) the weak symbol @var{name} to have the value
to make @var{name} weak.
@end defmac
@defmac ASM_OUTPUT_WEAKREF (@var{stream}, @var{decl}, @var{name}, @var{value})
Outputs a directive that enables @var{name} to be used to refer to
symbol @var{value} with weak-symbol semantics. @code{decl} is the
declaration of @code{name}.
@end defmac
@defmac SUPPORTS_WEAK
A C expression which evaluates to true if the target supports weak symbols.

7
gcc/varasm.c
View File

@ -4551,7 +4551,10 @@ weak_finish (void)
#ifndef ASM_OUTPUT_WEAKREF
else if (! TREE_SYMBOL_REFERENCED (target))
{
# ifdef ASM_WEAKEN_LABEL
/* Use ASM_WEAKEN_LABEL only if ASM_WEAKEN_DECL is not
defined, otherwise we and weak_finish_1 would use a
different macros. */
# if defined ASM_WEAKEN_LABEL && ! defined ASM_WEAKEN_DECL
ASM_WEAKEN_LABEL (asm_out_file, IDENTIFIER_POINTER (target));
# else
tree decl = find_decl_and_mark_needed (alias_decl, target);
@ -4736,7 +4739,7 @@ do_assemble_alias (tree decl, tree target)
weakref_targets = tree_cons (decl, target, weakref_targets);
#ifdef ASM_OUTPUT_WEAKREF
ASM_OUTPUT_WEAKREF (asm_out_file,
ASM_OUTPUT_WEAKREF (asm_out_file, decl,
IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)),
IDENTIFIER_POINTER (target));
#else