about summary refs log tree commit diff
path: root/sysdeps/sparc/configure.ac
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/sparc/configure.ac')
-rw-r--r--sysdeps/sparc/configure.ac59
1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/sparc/configure.ac b/sysdeps/sparc/configure.ac
new file mode 100644
index 0000000000..982077c9b9
--- /dev/null
+++ b/sysdeps/sparc/configure.ac
@@ -0,0 +1,59 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/sparc.
+
+# Check for support of VIS3 et al. instructions in the assembler.
+AC_CACHE_CHECK(for sparc assembler VIS3 support, libc_cv_sparc_as_vis3, [dnl
+cat > conftest.S <<\EOF
+	.text
+foo:	fmadds		%f1, %f2, %f3, %f5
+	fmaddd		%f2, %f4, %f8, %f10
+	fhadds		%f2, %f3, %f5
+	fhaddd		%f4, %f8, %f10
+	pdistn		%f2, %f4, %g1
+	movdtox		%f10, %o0
+	movstouw	%f9, %o1
+	movstosw	%f7, %o2
+	movxtod		%o3, %f18
+	movwtos		%o4, %f15
+	flcmps		%fcc0, %f3, %f5
+	flcmpd		%fcc1, %f4, %f6
+EOF
+dnl
+if AC_TRY_COMMAND([${CC-cc} -c $CFLAGS -Wa,-Av9d conftest.S]); then
+  libc_cv_sparc_as_vis3=yes
+else
+  libc_cv_sparc_as_vis3=no
+fi
+rm -f conftest*])
+if test $libc_cv_sparc_as_vis3 = yes; then
+  AC_DEFINE(HAVE_AS_VIS3_SUPPORT)
+fi
+LIBC_CONFIG_VAR([have-as-vis3], [$libc_cv_sparc_as_vis3])
+
+# 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
+
+if test $libc_cv_sparc_gcc_gotdata = yes; then
+  AC_DEFINE(PI_STATIC_AND_HIDDEN)
+fi