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authorDavid S. Miller <davem@davemloft.net>2012-02-21 12:06:07 -0800
committerDavid S. Miller <davem@davemloft.net>2012-02-20 17:51:48 -0800
commitc80098a9a05b7d5f8ad1488135f2cee613998c50 (patch)
treecd8d1e7b3de2442f45c88143edd1869eb594a8a2 /sysdeps
parent3a2545a0f345a6c6348e9f7ce56e929aeab61f10 (diff)
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Add sparc configure checks for GOTDATA support.
* 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.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/sparc/elf/configure73
-rw-r--r--sysdeps/sparc/elf/configure.in53
2 files changed, 126 insertions, 0 deletions
diff --git a/sysdeps/sparc/elf/configure b/sysdeps/sparc/elf/configure
index 78dc977ec7..67a40398c7 100644
--- a/sysdeps/sparc/elf/configure
+++ b/sysdeps/sparc/elf/configure
@@ -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
diff --git a/sysdeps/sparc/elf/configure.in b/sysdeps/sparc/elf/configure.in
index c22a7c5c58..ab8b189a7f 100644
--- a/sysdeps/sparc/elf/configure.in
+++ b/sysdeps/sparc/elf/configure.in
@@ -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