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Check for .cfi_{personality,lsda} on x86-64. 

We need this support in NPTL now to avoid the hand-coded tables.
This commit is contained in:
Ulrich Drepper 2009-07-23 17:15:56 -07:00
parent f1adf1f490
commit 01b597da40
3 changed files with 61 additions and 0 deletions
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2
nptl/ChangeLog
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2009-07-23 Ulrich Drepper <drepper@redhat.com>
* sysdeps/x86_64/configure.in: New file.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Fix error
path when not using absolute timeout futex.

36
nptl/sysdeps/x86_64/configure vendored Normal file
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# This file is generated from configure.in by Autoconf. DO NOT EDIT!
# Local configure fragment for sysdeps/i386.
{ echo "$as_me:$LINENO: checking for .cfi_personality and .cfi_lsda pseudo-ops" >&5
echo $ECHO_N "checking for .cfi_personality and .cfi_lsda pseudo-ops... $ECHO_C" >&6; }
if test "${libc_cv_asm_cfi_personality+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat > conftest.s <<EOF
${libc_cv_dot_text}
foo:
.cfi_startproc
.cfi_personality 0, foo
.cfi_lsda 0, foo
.cfi_endproc
EOF
if { ac_try='${CC-cc} $ASFLAGS -c conftest.s 1>&5'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
libc_cv_asm_cfi_personality=yes
else
libc_cv_asm_cfi_personality=no
fi
rm -f conftest*
fi
{ echo "$as_me:$LINENO: result: $libc_cv_asm_cfi_personality" >&5
echo "${ECHO_T}$libc_cv_asm_cfi_personality" >&6; }
if test x"$libc_cv_asm_cfi_personality" != xyes; then
{ { echo "$as_me:$LINENO: error: assembler too old, .cfi_personality support missing" >&5
echo "$as_me: error: assembler too old, .cfi_personality support missing" >&2;}
{ (exit 1); exit 1; }; }
fi

23
nptl/sysdeps/x86_64/configure.in Normal file
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/i386.
AC_CACHE_CHECK([for .cfi_personality and .cfi_lsda pseudo-ops],
libc_cv_asm_cfi_personality, [dnl
cat > conftest.s <<EOF
${libc_cv_dot_text}
foo:
.cfi_startproc
.cfi_personality 0, foo
.cfi_lsda 0, foo
.cfi_endproc
EOF
if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
libc_cv_asm_cfi_personality=yes
else
libc_cv_asm_cfi_personality=no
fi
rm -f conftest*
])
if test x"$libc_cv_asm_cfi_personality" != xyes; then
AC_MSG_ERROR([assembler too old, .cfi_personality support missing])
fi