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authorRoland McGrath <roland@gnu.org>1995-04-18 21:07:40 +0000
committerRoland McGrath <roland@gnu.org>1995-04-18 21:07:40 +0000
commitd02907df8e29353eaeb357f498c7469f4f44eacf (patch)
treebd01a63de8f3f3c6515d1fb4eb8df4af723d25f3
parent65b3cbcba735abd13f10dfdc170ff61411003390 (diff)
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* libc-symbols.h (strong_alias_asm, strong_alias): Use
ASM_GLOBAL_DIRECTIVE on the alias.
-rw-r--r--ChangeLog2
-rwxr-xr-xconfigure31
-rw-r--r--libc-symbols.h20
3 files changed, 48 insertions, 5 deletions
diff --git a/ChangeLog b/ChangeLog
index 604d1e7149..c544f0043a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -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.
diff --git a/configure b/configure
index 0a4e97d3c9..e440083651 100755
--- a/configure
+++ b/configure
@@ -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=
diff --git a/libc-symbols.h b/libc-symbols.h
index a173b4d66d..1782737c93 100644
--- a/libc-symbols.h
+++ b/libc-symbols.h
@@ -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) \