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Add sparc configure checks for GOTDATA support.

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* config.h.in (HAVE_BINUTILS_GOTDATA): New.
	(HAVE_GCC_GOTDATA): New.
	* sysdeps/sparc/elf/configure.in: Test for GOTDATA
	relocation support in both binutils and gcc.
	* sysdeps/sparc/elf/configure: Regenerate.
This commit is contained in:
David S. Miller 2012-02-21 12:06:07 -08:00
parent 3a2545a0f3
commit c80098a9a0
4 changed files with 138 additions and 0 deletions
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6
ChangeLog
View File

@ -1,5 +1,11 @@
2012-02-20 David S. Miller <davem@davemloft.net>
* config.h.in (HAVE_BINUTILS_GOTDATA): New.
(HAVE_GCC_GOTDATA): New.
* sysdeps/sparc/elf/configure.in: Test for GOTDATA
relocation support in both binutils and gcc.
* sysdeps/sparc/elf/configure: Regenerate.
* sysdeps/sparc/sparc32/elf/configure.in: Delete.
* sysdeps/sparc/sparc32/elf/configure: Delete.
* sysdeps/sparc/sparc64/elf/configure.in: Delete.

6
config.h.in
View File

@ -87,6 +87,12 @@
certain registers (CR0, MQ, CTR, LR) in asm statements. */
#undef BROKEN_PPC_ASM_CR0
/* Defined on SPARC if as and ld both support GOTDATA relocations. */
#undef HAVE_BINUTILS_GOTDATA
/* Defined on SPARC if GCC emits GOTDATA relocations. */
#undef HAVE_GCC_GOTDATA
/* Define if the linker supports the -z combreloc option. */
#undef HAVE_Z_COMBRELOC

73
sysdeps/sparc/elf/configure vendored
View File

@ -136,3 +136,76 @@ $as_echo "$libc_cv_sparc_tls" >&6; }
if test $libc_cv_sparc_tls = no; then
as_fn_error $? "the assembler must support TLS" "$LINENO" 5
fi
# Check for GOTDATA relocation support in assembler and linker.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sparc binutils GOTDATA reloc support" >&5
$as_echo_n "checking for sparc binutils GOTDATA reloc support... " >&6; }
if ${libc_cv_sparc_gotdata+:} false; then :
$as_echo_n "(cached) " >&6
else
cat > conftest.S <<\EOF
.data
.globl data
data: .word 0
.text
.globl foo
foo: sethi %gdop_hix22(data), %g1
xor %g1, %gdop_lox10(data), %g1
#ifdef __arch64__
ldx [%l7 + %g1], %g1, %gdop(data)
#else
ld [%l7 + %g1], %g1, %gdop(data)
#endif
EOF
if { ac_try='${CC-cc} -c $CFLAGS conftest.S 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then
libc_cv_sparc_gotdata=yes
else
libc_cv_sparc_gotdata=no
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_sparc_gotdata" >&5
$as_echo "$libc_cv_sparc_gotdata" >&6; }
if test $libc_cv_sparc_gotdata = yes; then
$as_echo "#define HAVE_BINUTILS_GOTDATA 1" >>confdefs.h
fi
# Check for a GCC emitting GOTDATA relocations.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sparc gcc GOTDATA reloc support" >&5
$as_echo_n "checking for sparc gcc GOTDATA reloc support... " >&6; }
if ${libc_cv_sparc_gcc_gotdata+:} false; then :
$as_echo_n "(cached) " >&6
else
cat > conftest.c <<\EOF
int data;
int foo(void)
{
return data;
}
EOF
libc_cv_sparc_gcc_gotdata=no
if { ac_try='${CC-cc} -S $CFLAGS -O2 -fPIC conftest.c 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then
if grep -q 'gdop_hix22' conftest.s \
&& grep -q 'gdop_lox10' conftest.s; then
libc_cv_sparc_gcc_gotdata=yes
fi
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_sparc_gcc_gotdata" >&5
$as_echo "$libc_cv_sparc_gcc_gotdata" >&6; }
if test $libc_cv_sparc_gcc_gotdata = yes; then
$as_echo "#define HAVE_GCC_GOTDATA 1" >>confdefs.h
fi

53
sysdeps/sparc/elf/configure.in
View File

@ -45,3 +45,56 @@ rm -f conftest*])
if test $libc_cv_sparc_tls = no; then
AC_MSG_ERROR([the assembler must support TLS])
fi
# Check for GOTDATA relocation support in assembler and linker.
AC_CACHE_CHECK(for sparc binutils GOTDATA reloc support, libc_cv_sparc_gotdata, [dnl
changequote(,)dnl
cat > conftest.S <<\EOF
.data
.globl data
data: .word 0
.text
.globl foo
foo: sethi %gdop_hix22(data), %g1
xor %g1, %gdop_lox10(data), %g1
#ifdef __arch64__
ldx [%l7 + %g1], %g1, %gdop(data)
#else
ld [%l7 + %g1], %g1, %gdop(data)
#endif
EOF
changequote([,])dnl
dnl
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.S 1>&AS_MESSAGE_LOG_FD); then
libc_cv_sparc_gotdata=yes
else
libc_cv_sparc_gotdata=no
fi
rm -f conftest*])
if test $libc_cv_sparc_gotdata = yes; then
AC_DEFINE(HAVE_BINUTILS_GOTDATA)
fi
# Check for a GCC emitting GOTDATA relocations.
AC_CACHE_CHECK(for sparc gcc GOTDATA reloc support, libc_cv_sparc_gcc_gotdata, [dnl
changequote(,)dnl
cat > conftest.c <<\EOF
int data;
int foo(void)
{
return data;
}
EOF
changequote([,])dnl
dnl
libc_cv_sparc_gcc_gotdata=no
if AC_TRY_COMMAND(${CC-cc} -S $CFLAGS -O2 -fPIC conftest.c 1>&AS_MESSAGE_LOG_FD); then
if grep -q 'gdop_hix22' conftest.s \
&& grep -q 'gdop_lox10' conftest.s; then
libc_cv_sparc_gcc_gotdata=yes
fi
fi
rm -f conftest*])
if test $libc_cv_sparc_gcc_gotdata = yes; then
AC_DEFINE(HAVE_GCC_GOTDATA)
fi