Add framework for using sparc VIS3 instructions, use it for copysign/signbit.

	* sysdeps/sparc/configure.in: New file.
	* sysdeps/sparc/configure: Generate.
	* configure.in (libc_cv_sparc_as_vis3): Substitute.
	* configure: Regenerate.
	* config.h.in (HAVE_AS_VIS3_SUPPORT): New.
	* config.make.in (have-as-vis3): New.
	* sysdeps/sparc/sparc32/sparcv9/Makefile (ASFLAGS-*): If VIS3 is
	available use -Av9d instead of -Av9a.
	* sysdeps/sparc/sparc64/Makefile: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign-vis3.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf-vis3.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/Makefile: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbit-vis3.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf-vis3.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S: New file.

6 files changed, 171 insertions, 0 deletions

diff --git a/sysdeps/sparc/sparc64/Makefile b/sysdeps/sparc/sparc64/Makefile
index fb8b011d53..2b7b83035a 100644
--- a/sysdeps/sparc/sparc64/Makefile
+++ b/sysdeps/sparc/sparc64/Makefile
@@ -6,3 +6,12 @@ endif
 ifeq ($(subdir),string)
 sysdep_routines += align-cpy
 endif
+
+ifeq ($(have-as-vis3),yes)
+ASFLAGS-.o += -Wa,-Av9d
+ASFLAGS-.os += -Wa,-Av9d
+ASFLAGS-.op += -Wa,-Av9d
+ASFLAGS-.og += -Wa,-Av9d
+ASFLAGS-.ob += -Wa,-Av9d
+ASFLAGS-.oS += -Wa,-Av9d
+endif
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/Makefile b/sysdeps/sparc/sparc64/fpu/multiarch/Makefile
new file mode 100644
index 0000000000..b03884de0d
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/Makefile
@@ -0,0 +1,9 @@
+ifeq ($(subdir),math)
+ifeq ($(have-as-vis3),yes)
+libm-sysdep_routines += m_signbitf-vis3 m_signbit-vis3
+sysdep_routines += s_signbitf-vis3 s_signbit-vis3
+
+CFLAGS-s_signbitf-vis3.S = -Wa,-Av9d
+CFLAGS-s_signbit-vis3.S = -Wa,-Av9d
+endif
+endif
\ No newline at end of file
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_signbit-vis3.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbit-vis3.S
new file mode 100644
index 0000000000..8d54e32ac4
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbit-vis3.S
@@ -0,0 +1,25 @@
+/* signbit().  sparc64 vis3 version.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+ENTRY (__signbit_vis3)
+	movdtox	%f0, %o0
+	retl
+	 srlx	%o0, 63, %o0
+END (__signbit_vis3)
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S
new file mode 100644
index 0000000000..a8e9728935
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S
@@ -0,0 +1,57 @@
+#include <sysdep.h>
+
+	.text
+ENTRY(__signbit)
+	.type	__signbit, @gnu_indirect_function
+# ifdef SHARED
+	SETUP_PIC_REG_LEAF(o3, o5)
+# endif
+# ifdef HAVE_AS_VIS3_SUPPORT
+	set	HWCAP_SPARC_VIS3, %o1
+	andcc	%o0, %o1, %g0
+	be	9f
+	 nop
+#  ifdef SHARED
+	sethi	%gdop_hix22(__signbit_vis3), %o1
+	xor	%o1, %gdop_lox10(__signbit_vis3), %o1
+#  else
+	set	__signbit_vis3, %o1
+#  endif
+	ba	10f
+	 nop
+9:
+# endif
+# ifdef SHARED
+	sethi	%gdop_hix22(__signbit_generic), %o1
+	xor	%o1, %gdop_lox10(__signbit_generic), %o1
+# else
+	set	__signbit_generic, %o1
+# endif
+# ifdef HAVE_AS_VIS3_SUPPORT
+10:
+# endif
+# ifdef SHARED
+	add	%o3, %o1, %o1
+# endif
+	retl
+	 mov	%o1, %o0
+END(__signbit)
+weak_alias (__signbit, signbit)
+
+/* On 64-bit the double version will also always work for
+   long-double-precision since in both cases the word with the
+   sign bit in it is passed always in register %f0.  */
+strong_alias (__signbit, __signbitl)
+hidden_def (__signbitl)
+weak_alias (__signbitl, signbitl)
+
+# undef weak_alias
+# define weak_alias(a, b)
+# undef strong_alias
+# define strong_alias(a, b)
+# undef hidden_def
+# define hidden_def(a)
+
+#define __signbit __signbit_generic
+
+#include "../s_signbit.S"
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf-vis3.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf-vis3.S
new file mode 100644
index 0000000000..004b0870d6
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf-vis3.S
@@ -0,0 +1,25 @@
+/* signbitf().  sparc64 vis3 version.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+ENTRY (__signbitf_vis3)
+	movstouw %f1, %o0
+	retl
+	 srl	%o0, 31, %o0
+END (__signbitf_vis3)
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S
new file mode 100644
index 0000000000..721bc7fe4a
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S
@@ -0,0 +1,46 @@
+#include <sysdep.h>
+
+	.text
+ENTRY(__signbitf)
+	.type	__signbitf, @gnu_indirect_function
+# ifdef SHARED
+	SETUP_PIC_REG_LEAF(o3, o5)
+# endif
+# ifdef HAVE_AS_VIS3_SUPPORT
+	set	HWCAP_SPARC_VIS3, %o1
+	andcc	%o0, %o1, %g0
+	be	9f
+	 nop
+#  ifdef SHARED
+	sethi	%gdop_hix22(__signbitf_vis3), %o1
+	xor	%o1, %gdop_lox10(__signbitf_vis3), %o1
+#  else
+	set	__signbitf_vis3, %o1
+#  endif
+	ba	10f
+	 nop
+9:
+# endif
+# ifdef SHARED
+	sethi	%gdop_hix22(__signbitf_generic), %o1
+	xor	%o1, %gdop_lox10(__signbitf_generic), %o1
+# else
+	set	__signbitf_generic, %o1
+# endif
+# ifdef HAVE_AS_VIS3_SUPPORT
+10:
+# endif
+# ifdef SHARED
+	add	%o3, %o1, %o1
+# endif
+	retl
+	 mov	%o1, %o0
+END(__signbitf)
+weak_alias (__signbitf, signbitf)
+
+# undef weak_alias
+# define weak_alias(a, b)
+
+#define __signbitf __signbitf_generic
+
+#include "../s_signbitf.S"