sparc: refactor sparc32 fabs{f} selector to C

This patch refactors the sparc32 ifunc selector to a C implementation.
Also, the generic symbol is moved to its own implementation file
s_fabs{f}-generic.S).

Checked on sparc64-linux-gnu and sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	(libm-sysdep_routines): Add s_fabsf-generic and s_fabs-generic.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

8 files changed, 85 insertions, 30 deletions

diff --git a/ChangeLog b/ChangeLog
index 39e8bcb581..258a050134 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,17 @@
 2017-12-01  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
+	(libm-sysdep_routines): Add s_fabsf-generic and s_fabs-generic.
+	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S: New
+	file.
+	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c: Likewise.
+	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S:
+	Likewise.
+	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c: Likewise.
+	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S: Remove file.
+	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S: Likewise.
+
+	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
 	(sysdep_calls): New rule.
 	(sysdep_routines): Use sysdep_calls as base.
 	(libm-sysdep_routines): Add generic rule for symbols shared with
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
index b8d1126104..bd8e341010 100644
--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
+++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
@@ -7,7 +7,8 @@ sysdep_calls := s_copysignf-vis3 s_copysign-vis3 s_copysignf-generic \
 		s_copysign-generic
 
 sysdep_routines += $(sysdep_calls)
-libm-sysdep_routines += s_fabs-vis3 s_fabsf-vis3 s_llrintf-vis3 s_llrint-vis3 \
+libm-sysdep_routines += s_fabs-vis3 s_fabsf-vis3 s_fabs-generic \
+			s_fabsf-generic s_llrintf-vis3 s_llrint-vis3 \
 			s_rintf-vis3 s_rint-vis3 \
 			s_fmaf-vis3 s_fma-vis3 s_fma-generic s_fmaf-generic \
 			s_nearbyint-vis3 s_nearbyintf-vis3 \
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S
new file mode 100644
index 0000000000..267dbd2352
--- /dev/null
+++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S
@@ -0,0 +1,5 @@
+#include <libm-alias-double.h>
+#define __fabs __fabs_generic
+#undef libm_alias_double
+#define libm_alias_double(a, b)
+#include <sysdeps/sparc/sparc32/fpu/s_fabs.S>
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S
deleted file mode 100644
index 642df18b3e..0000000000
--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <sparc-ifunc.h>
-#include <math_ldbl_opt.h>
-#include <libm-alias-double.h>
-
-SPARC_ASM_VIS3_IFUNC(fabs)
-
-libm_alias_double (__fabs, fabs)
-
-# undef weak_alias
-# define weak_alias(a, b)
-# undef compat_symbol
-# define compat_symbol(a, b, c, d)
-
-#define __fabs __fabs_generic
-
-#include "../s_fabs.S"
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c
new file mode 100644
index 0000000000..9febb0f1c5
--- /dev/null
+++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c
@@ -0,0 +1,32 @@
+/* fabs ifunc resolver, Linux/sparc32 version.
+   Copyright (C) 2017 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/>.  */
+
+#define __fabs __redirect_fabs
+#include <math.h>
+#undef __fabs
+#include <sparc-ifunc.h>
+#include <libm-alias-double.h>
+
+extern __typeof (__redirect_fabs) __fabs_vis3 attribute_hidden;
+extern __typeof (__redirect_fabs) __fabs_generic attribute_hidden;
+
+sparc_libm_ifunc_redirected (__redirect_fabs, __fabs,
+			     hwcap & HWCAP_SPARC_VIS3
+			     ? __fabs_vis3
+			     : __fabs_generic);
+libm_alias_double (__fabs, fabs)
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S
new file mode 100644
index 0000000000..b6fb38f34c
--- /dev/null
+++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S
@@ -0,0 +1,5 @@
+#include <libm-alias-float.h>
+#define __fabsf __fabsf_generic
+#undef libm_alias_float
+#define libm_alias_float(a, b)
+#include <sysdeps/sparc/sparc32/fpu/s_fabsf.S>
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S
deleted file mode 100644
index 628486a113..0000000000
--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S
+++ /dev/null
@@ -1,13 +0,0 @@
-#include <sparc-ifunc.h>
-#include <libm-alias-float.h>
-
-SPARC_ASM_VIS3_IFUNC(fabsf)
-
-libm_alias_float (__fabs, fabs)
-
-# undef weak_alias
-# define weak_alias(a, b)
-
-#define __fabsf __fabsf_generic
-
-#include "../../../fpu/s_fabsf.S"
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c
new file mode 100644
index 0000000000..2500a5917d
--- /dev/null
+++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c
@@ -0,0 +1,30 @@
+/* fabsf ifunc resolver, Linux/sparc32 version.
+   Copyright (C) 2017 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 <math.h>
+#include <sparc-ifunc.h>
+#include <libm-alias-float.h>
+
+extern __typeof (fabsf) __fabsf_vis3 attribute_hidden;
+extern __typeof (fabsf) __fabsf_generic attribute_hidden;
+
+sparc_libm_ifunc (__fabsf,
+		  hwcap & HWCAP_SPARC_VIS3
+		  ? __fabsf_vis3
+		  : __fabsf_generic);
+libm_alias_float (__fabs, fabs)