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* libc-symbols.h (strong_alias_asm, strong_alias): Use

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ASM_GLOBAL_DIRECTIVE on the alias.
This commit is contained in:
Roland McGrath 1995-04-18 21:07:40 +00:00
parent 65b3cbcba7
commit d02907df8e
3 changed files with 48 additions and 5 deletions
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2
ChangeLog
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@ -3,6 +3,8 @@ Tue Apr 18 14:00:19 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* configure.in (libc_cv_asm_global_directive): New check to define
ASM_GLOBAL_DIRECTIVE.
* config.h.in: Add #undef ASM_GLOBAL_DIRECTIVE.
* libc-symbols.h (strong_alias_asm, strong_alias): Use
ASM_GLOBAL_DIRECTIVE on the alias.
* sysdeps/unix/make_errlist.c (main): Don't generate "#ifdef
HAVE_WEAK_SYMBOLS" #defns.

31
configure vendored
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@ -1134,7 +1134,7 @@ if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
else
libc_cv_asm_set_directive=no
fi
rm -f contest*
rm -f conftest*
fi
echo "$ac_t""$libc_cv_asm_set_directive" 1>&4
@ -1145,6 +1145,35 @@ EOF
fi
echo $ac_n "checking for assembler global-symbol directive""... $ac_c" 1>&4
if eval "test \"`echo '$''{'libc_cv_asm_global_directive'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&4
else
libc_cv_asm_global_directive=UNKNOWN
for ac_globl in .globl .global; do
cat > conftest.s <<EOF
.text
${ac_globl} foo
foo: .long 0
EOF
if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
libc_cv_asm_global_directive=${ac_globl}
fi
rm -f conftest*
test $libc_cv_asm_global_directive != UNKNOWN && break
done
fi
echo "$ac_t""$libc_cv_asm_global_directive" 1>&4
if test $libc_cv_asm_global_directive = UNKNOWN; then
{ echo "configure: error: cannot determine asm global directive" 1>&2; exit 1; }
else
cat >> confdefs.h <<EOF
#define ASM_GLOBAL_DIRECTIVE ${libc_cv_asm_global_directive}
EOF
fi
# sysdeps configure fragments may set these with files to be linked below.
libc_link_dests=

20
libc-symbols.h
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@ -79,37 +79,49 @@ Cambridge, MA 02139, USA. */
#endif
#endif
/* Define ALIAS as a strong alias for ORIGINAL. */
#ifdef HAVE_ASM_SET_DIRECTIVE
#define strong_alias_asm(original, alias) \
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias); \
.set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
#ifdef ASSEMBLER
#define strong_alias(original, alias) strong_alias_asm (original, alias)
#else
#define strong_alias(original, alias) \
asm (".set " __SYMBOL_PREFIX #alias "," __SYMBOL_PREFIX #original);
asm (__string_1 (ASM_GLOBAL_DIRECTIVE) " " __SYMBOL_PREFIX #alias "\n" \
".set " __SYMBOL_PREFIX #alias "," __SYMBOL_PREFIX #original);
#endif
#else
#define strong_alias_asm(original, alias) \
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias); \
C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
#ifdef ASSEMBLER
#define strong_alias(original, alias) strong_alias_asm (original, alias)
#else
#define strong_alias(original, alias) \
asm (__SYMBOL_PREFIX #alias " = " __SYMBOL_PREFIX #original);
asm (__string_1 (ASM_GLOBAL_DIRECTIVE) " " __SYMBOL_PREFIX #alias "\n" \
__SYMBOL_PREFIX #alias " = " __SYMBOL_PREFIX #original);
#endif
#endif
/* Define ALIAS as a weak alias for ORIGINAL.
If weak aliases are not available, this defines a strong alias. */
/* Helper macros used above. */
#define __string_1(x) __string_0(x)
#define __string_0(x) #x
#ifdef HAVE_WEAK_SYMBOLS
#ifdef ASSEMBLER
/* Define ALIAS as a weak alias for ORIGINAL.
If weak aliases are not available, this defines a strong alias. */
#define weak_alias(original, alias) \
.weak C_SYMBOL_NAME (alias); \
C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
/* Declare SYMBOL to be weak. */
#define weak_symbol(symbol) .weak C_SYMBOL_NAME (symbol)
#else
#define weak_symbol(symbol) asm (".weak " __SYMBOL_PREFIX #symbol);
#define weak_alias(original, alias) \