[PATCH 09/15] PowerPC: multiarch copysign/copysignf for PowerPC64

[Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>]

2013-12-09  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>

	* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile: Add copysign/
	copysignf multiarch implementation.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S: New
	file.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S: New
	file.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c: New file:
	multiarch copysign for PPC64.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c: New file:
	multiarch copysignf for PPC64.

--

diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
index 6091353..9e8a14d 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
@@ -1,6 +1,7 @@
 ifeq ($(subdir),math)
 sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \
-		   s_isnan-power5 s_isnan-ppc64
+		   s_isnan-power5 s_isnan-ppc64 s_copysign-power6 \
+		   s_copysign-ppc64
 
 libm-sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \
 			s_isnan-power5 s_isnan-ppc64 s_llround-power6x \
@@ -9,5 +10,6 @@ libm-sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \
 			s_floor-power5+ s_floor-ppc64 s_floorf-power5+ \
 			s_floorf-ppc64 s_round-power5+ s_round-ppc64 \
 			s_roundf-power5+ s_roundf-ppc64 s_trunc-power5+ \
-			s_trunc-ppc64 s_truncf-power5+ s_truncf-ppc64
+			s_trunc-ppc64 s_truncf-power5+ s_truncf-ppc64 \
+			s_copysign-power6 s_copysign-ppc64
 endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S
new file mode 100644
index 0000000..595d318
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S
@@ -0,0 +1,33 @@
+/* copysign().  PowerPC64 default version.
+   Copyright (C) 2013 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>
+#include <math_ldbl_opt.h>
+
+#undef weak_alias
+#define weak_alias(a,b)
+#undef strong_alias
+#define strong_alias(a,b)
+#undef compat_symbol
+#define compat_symbol(a, b, c, d)
+#undef hidden_def
+#define hidden_def(name)
+
+#define __copysign __copysign_power6
+
+#include <sysdeps/powerpc/powerpc64/fpu/s_copysign.S>
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S
new file mode 100644
index 0000000..022ea06
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S
@@ -0,0 +1,35 @@
+/* copysign().  PowerPC64 default version.
+   Copyright (C) 2010-2013 Free Software Foundation, Inc.
+   Contributed by Luis Machado <luisgpm@br.ibm.com>.
+   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>
+#include <math_ldbl_opt.h>
+
+#undef weak_alias
+#define weak_alias(a,b)
+#undef strong_alias
+#define strong_alias(a,b)
+#undef compat_symbol
+#define compat_symbol(a, b, c, d)
+
+#define __copysign __copysign_ppc64
+#undef hidden_def
+#define hidden_def(name)				\
+  strong_alias (__copysign_ppc64, __GI___copysign)
+
+#include <sysdeps/powerpc/powerpc64/fpu/s_copysign.S>
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c
new file mode 100644
index 0000000..ee7ce0a
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c
@@ -0,0 +1,51 @@
+/* Multiple versions of copysign.
+   Copyright (C) 2013 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/>.  */
+
+/* Redefine copysign so that the compiler won't complain about the type
+   mismatch with the IFUNC selector in strong_alias below.  */
+#undef __copysign
+#define __copysign __redirect_copysign
+#include <math.h>
+#include <math_ldbl_opt.h>
+#undef __copysign
+#include <shlib-compat.h>
+#include "init-arch.h"
+
+extern __typeof (__redirect_copysign) __copysign_ppc64 attribute_hidden;
+extern __typeof (__redirect_copysign) __copysign_power6 attribute_hidden;
+
+extern __typeof (__redirect_copysign) __libm_copysign;
+libc_ifunc (__libm_copysign,
+	    (hwcap & PPC_FEATURE_ARCH_2_05)
+	    ? __copysign_power6
+            : __copysign_ppc64);
+
+strong_alias (__libm_copysign, __copysign)
+weak_alias (__copysign, copysign)
+
+#ifdef NO_LONG_DOUBLE
+weak_alias (__copysign,copysignl)
+strong_alias(__copysign,__copysignl)
+#endif
+#ifdef IS_IN_libm
+# if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
+compat_symbol (libm, __copysign, copysignl, GLIBC_2_0);
+# endif
+#elif LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
+compat_symbol (libc, __copysign, copysignl, GLIBC_2_0);
+#endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c
new file mode 100644
index 0000000..89c3c06
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c
@@ -0,0 +1,32 @@
+/* Multiple versions of copysignf.
+   Copyright (C) 2013 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 <shlib-compat.h>
+#include "init-arch.h"
+
+/* It's safe to use double-precision implementation for single-precision. */
+extern __typeof (__copysignf) __copysign_ppc64 attribute_hidden;
+extern __typeof (__copysignf) __copysign_power6 attribute_hidden;
+
+libc_ifunc (__copysignf,
+	    (hwcap & PPC_FEATURE_ARCH_2_05)
+	    ? __copysign_power6
+            : __copysign_ppc64);
+
+weak_alias (__copysignf, copysignf)