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acconfig.h: Add HAVE_GAS_HIDDEN.

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* acconfig.h: Add HAVE_GAS_HIDDEN.
        * config.h: Regenerated.
        * configure.in: Add test for .hidden pseudo-op in gas.
	* configure: Regenerated.
        * crtstuff.c: Include auto-host.h.
        Emit additional .hidden pseudo-op for __dso_handle if the
        assembler knows about it.

From-SVN: r32925
This commit is contained in:
Ulrich Drepper 2000-04-05 07:34:36 +00:00
parent 05ecd0e9ab
commit 6a9c5260e1
5 changed files with 54 additions and 5 deletions
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3
gcc/acconfig.h
View file

@ -72,6 +72,9 @@
/* Define if your assembler supports .weak. */
#undef HAVE_GAS_WEAK
/* Define if your assembler supports .hidden. */
#undef HAVE_GAS_HIDDEN
/* Define if your assembler uses the old HImode fild and fist notation. */
#undef HAVE_GAS_FILDS_FISTS

3
gcc/config.in
View file

@ -73,6 +73,9 @@
/* Define if your assembler supports .weak. */
#undef HAVE_GAS_WEAK
/* Define if your assembler supports .hidden. */
#undef HAVE_GAS_HIDDEN
/* Define if your assembler uses the old HImode fild and fist notation. */
#undef HAVE_GAS_FILDS_FISTS

26
gcc/configure vendored
View file

@ -8834,10 +8834,28 @@ EOF
fi
echo "$ac_t""$gcc_cv_as_weak" 1>&6
echo $ac_n "checking assembler hidden support""... $ac_c" 1>&6
echo "configure:8839: checking assembler hidden support" >&5
gcc_cv_as_hidden=
if test x$gcc_cv_as != x; then
# Check if we have .hidden
echo " .hidden foobar" > conftest.s
echo "foobar:" >> conftest.s
if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
cat >> confdefs.h <<\EOF
#define HAVE_GAS_HIDDEN 1
EOF
gcc_cv_as_hidden="yes"
fi
rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
fi
echo "$ac_t""$gcc_cv_as_hidden" 1>&6
case "$target" in
sparc*-*-*)
echo $ac_n "checking assembler .register pseudo-op support""... $ac_c" 1>&6
echo "configure:8841: checking assembler .register pseudo-op support" >&5
echo "configure:8859: checking assembler .register pseudo-op support" >&5
if eval "test \"`echo '$''{'gcc_cv_as_register_pseudo_op'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -8867,7 +8885,7 @@ EOF
case "$tm_file" in
*64*)
echo $ac_n "checking for 64 bit support in assembler ($gcc_cv_as)""... $ac_c" 1>&6
echo "configure:8871: checking for 64 bit support in assembler ($gcc_cv_as)" >&5
echo "configure:8889: checking for 64 bit support in assembler ($gcc_cv_as)" >&5
if eval "test \"`echo '$''{'gcc_cv_as_flags64'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -8912,7 +8930,7 @@ EOF
if test "x$gcc_cv_as_flags64" != xno; then
echo $ac_n "checking for assembler offsetable %lo() support""... $ac_c" 1>&6
echo "configure:8916: checking for assembler offsetable %lo() support" >&5
echo "configure:8934: checking for assembler offsetable %lo() support" >&5
if eval "test \"`echo '$''{'gcc_cv_as_offsetable_lo10'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -8951,7 +8969,7 @@ EOF
i[34567]86-*-*)
echo $ac_n "checking assembler instructions""... $ac_c" 1>&6
echo "configure:8955: checking assembler instructions" >&5
echo "configure:8973: checking assembler instructions" >&5
gcc_cv_as_instructions=
if test x$gcc_cv_as != x; then
set "filds fists" "filds mem; fists mem"

14
gcc/configure.in
View file

@ -4382,6 +4382,20 @@ if test x$gcc_cv_as != x; then
fi
AC_MSG_RESULT($gcc_cv_as_weak)
AC_MSG_CHECKING(assembler hidden support)
gcc_cv_as_hidden=
if test x$gcc_cv_as != x; then
# Check if we have .hidden
echo " .hidden foobar" > conftest.s
echo "foobar:" >> conftest.s
if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
AC_DEFINE(HAVE_GAS_HIDDEN)
gcc_cv_as_hidden="yes"
fi
rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
fi
AC_MSG_RESULT($gcc_cv_as_hidden)
case "$target" in
sparc*-*-*)
AC_CACHE_CHECK([assembler .register pseudo-op support],

13
gcc/crtstuff.c
View file

@ -52,6 +52,7 @@ Boston, MA 02111-1307, USA. */
compiled for the target, and hence definitions concerning only the host
do not apply. */
#include "auto-host.h"
#include "tm.h"
#include "tsystem.h"
@ -132,7 +133,17 @@ typedef void (*func_ptr) (void);
#ifdef OBJECT_FORMAT_ELF
/* Declare the __dso_handle variable. It should have a unique value
in every shared-object; in a main program its value is zero. */
in every shared-object; in a main program its value is zero. The
object should in any case be protected. This means the instance
in one DSO or the main program is not used in another object. The
dynamic linker takes care of this. */
/* XXX Ideally the following should be implemented using
__attribute__ ((__visibility__ ("hidden")))
but the __attribute__ support is not yet there. */
#ifdef HAVE_GAS_HIDDEN
asm (".hidden\t__dso_handle");
#endif
#ifdef CRTSTUFFS_O
void *__dso_handle = &__dso_handle;