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Fix weakening of external declarations.

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2020-04-21  John David Anglin  <danglin@gcc.gnu.org>

	* config/pa/som.h (ASM_WEAKEN_LABEL): Delete.
	(ASM_WEAKEN_DECL): New define.
	(HAVE_GAS_WEAKREF): Undefine.
This commit is contained in:
John David Anglin 2020-04-21 16:33:23 +00:00
parent 85353e24ca
commit 1d4a3bfa83
2 changed files with 44 additions and 7 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2020-04-21 John David Anglin <danglin@gcc.gnu.org>
* config/pa/som.h (ASM_WEAKEN_LABEL): Delete.
(ASM_WEAKEN_DECL): New define.
(HAVE_GAS_WEAKREF): Undefine.
2020-04-21 Richard Sandiford <richard.sandiford@arm.com>
PR tree-optimization/94683

45
gcc/config/pa/som.h
View File

@ -277,7 +277,7 @@ do { \
/* If GAS supports weak, we can support weak when we have working linker
support for secondary definitions and are generating code for GAS.
This is primarily for one-only support as SOM doesn't allow undefined
weak symbols. */
weak symbols or weak aliases. */
#ifdef HAVE_GAS_WEAK
#define TARGET_SUPPORTS_WEAK (TARGET_SOM_SDEF && TARGET_GAS)
#else
@ -328,12 +328,43 @@ do { \
be used to remove dead procedures. Thus, support for named sections
is not needed and in previous testing caused problems with various
HP tools. */
#define ASM_WEAKEN_LABEL(FILE,NAME) \
do { fputs ("\t.weak\t", FILE); \
assemble_name (FILE, NAME); \
fputc ('\n', FILE); \
targetm.asm_out.globalize_label (FILE, NAME); \
} while (0)
#if defined HAVE_GAS_WEAK
#define ASM_WEAKEN_DECL(FILE,DECL,NAME,VALUE) \
do \
{ \
if ((VALUE) != NULL) \
error_at (DECL_SOURCE_LOCATION (DECL), \
"weak aliases are not supported"); \
fputs ("\t.weak\t", FILE); \
assemble_name (FILE, NAME); \
fputc ('\n', FILE); \
\
/* Import external objects. */ \
if (DECL_EXTERNAL (DECL)) \
{ \
fputs ("\t.IMPORT ", FILE); \
assemble_name (FILE, NAME); \
if (TREE_CODE (DECL) == FUNCTION_DECL) \
fputs (",CODE\n", FILE); \
else \
fputs (",DATA\n", FILE); \
} \
/* Functions are globalized by ASM_DECLARE_FUNCTION_NAME. */ \
else if (TREE_CODE (DECL) != FUNCTION_DECL) \
{ \
fputs ("\t.EXPORT ", FILE); \
assemble_name (FILE, NAME); \
fputs (",DATA\n", FILE); \
} \
} \
while (0)
#endif
/* Although gas accepts .weakref, it doesn't provide the correct symbol
type for function references. For now, we use ASM_WEAKEN_DECL instead.
We have to undefine HAVE_GAS_WEAKREF to prevent default.h from defining
ASM_OUTPUT_WEAKREF. */
#undef HAVE_GAS_WEAKREF
/* We can't handle weak aliases, and therefore can't support pragma weak.
Suppress the use of pragma weak in gthr-dce.h and gthr-posix.h. */