sparc: refactor sparc64 isnan{f} selector to C

This patch refactors the sparc64 ifunc selector to a C implementation.
Also, the generic symbol is moved to its own implementation file
(s_isnan{f}-generic.S).

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

	* sysdeps/sparc/sparc64/fpu/multiarch/Makefile (sysdeps_calls):
	Add s_isnanf-generic and s_isnan-generic objects.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_isnan-generic.S: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf-generic.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.S: Remove file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.S: Likewise.

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

7 files changed, 83 insertions, 31 deletions

diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/Makefile b/sysdeps/sparc/sparc64/fpu/multiarch/Makefile
index 702452c..a46773b 100644
--- a/sysdeps/sparc/sparc64/fpu/multiarch/Makefile
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/Makefile
@@ -5,7 +5,7 @@ ifeq ($(subdir),math)
 sysdep_calls := s_signbitf-vis3 s_signbit-vis3 s_signbitf-generic \
 		s_signbit-generic s_finitef-vis3 \
 		s_finite-vis3 s_isinff-vis3 s_isinf-vis3 \
-		s_isnanf-vis3 s_isnan-vis3
+		s_isnanf-vis3 s_isnan-vis3 s_isnanf-generic s_isnan-generic
 
 sysdep_routines += $(sysdep_calls)
 libm-sysdep_routines += s_lrintf-vis3 s_lrint-vis3 s_rintf-vis3 s_rint-vis3 \
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan-generic.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan-generic.S
new file mode 100644
index 0000000..64d4430
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan-generic.S
@@ -0,0 +1,6 @@
+#define __isnan __isnan_generic
+#undef hidden_def
+#define hidden_def(a)
+#undef weak_alias
+#define weak_alias(a,b)
+#include <sysdeps/sparc/sparc64/fpu/s_isnan.S>
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.S
deleted file mode 100644
index 40e985a..0000000
--- a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.S
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <sparc-ifunc.h>
-
-SPARC_ASM_VIS3_IFUNC(isnan)
-
-hidden_def (__isnan)
-weak_alias (__isnan, isnan)
-
-# undef weak_alias
-# define weak_alias(a, b)
-# undef hidden_def
-# define hidden_def(a)
-
-#define __isnan __isnan_generic
-
-#include "../s_isnan.S"
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.c b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.c
new file mode 100644
index 0000000..ffdf504
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnan.c
@@ -0,0 +1,37 @@
+/* isnan ifunc resolver, Linux/sparc64 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 __isnan __redirect___isnan
+#define __isnanf __redirect___isnanf
+#define __isnanl __redirect___isnanl
+#include <math.h>
+#undef __isnan
+#undef __isnanf
+#undef __isnanl
+#include <sparc-ifunc.h>
+
+extern __typeof (isnan) __isnan_vis3 attribute_hidden;
+extern __typeof (isnan) __isnan_generic attribute_hidden;
+
+sparc_libm_ifunc_redirected (__redirect___isnan, __isnan,
+			     hwcap & HWCAP_SPARC_VIS3
+			     ? __isnan_vis3
+			     : __isnan_generic);
+
+sparc_ifunc_redirected_hidden_def (__redirect___isnan, __isnan)
+weak_alias (__isnan, isnan)
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf-generic.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf-generic.S
new file mode 100644
index 0000000..5c82f7d
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf-generic.S
@@ -0,0 +1,6 @@
+#define __isnanf __isnanf_generic
+#undef hidden_def
+#define hidden_def(a)
+#undef weak_alias
+#define weak_alias(a,b)
+#include <sysdeps/sparc/sparc64/fpu/s_isnanf.S>
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.S b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.S
deleted file mode 100644
index 6b53b69..0000000
--- a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.S
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <sparc-ifunc.h>
-
-SPARC_ASM_VIS3_IFUNC(isnanf)
-
-hidden_def (__isnanf)
-weak_alias (__isnanf, isnanf)
-
-# undef weak_alias
-# define weak_alias(a, b)
-# undef hidden_def
-# define hidden_def(a)
-
-#define __isnanf __isnanf_generic
-
-#include "../s_isnanf.S"
diff --git a/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.c b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.c
new file mode 100644
index 0000000..7103830
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/multiarch/s_isnanf.c
@@ -0,0 +1,33 @@
+/* isnanf ifunc resolver, Linux/sparc64 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 __isnanf __redirect___isnanf
+#include <math.h>
+#undef __isnanf
+#include <sparc-ifunc.h>
+
+extern __typeof (isnanf) __isnanf_vis3 attribute_hidden;
+extern __typeof (isnanf) __isnanf_generic attribute_hidden;
+
+sparc_libm_ifunc_redirected (__redirect___isnanf, __isnanf,
+			     hwcap & HWCAP_SPARC_VIS3
+			     ? __isnanf_vis3
+			     : __isnanf_generic);
+
+sparc_ifunc_redirected_hidden_def (__redirect___isnanf,__isnanf)
+weak_alias (__isnanf, isnanf)