[PATCH 31/36] PowerPC: copysign/copysignf multilib for PowerPC32

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

2013-08-19  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>

	* sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S: Move to ...
	* sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-power6.S: ...
	here.
	(__copysign): Rename symbol to __copysign_power6 and remove
	strong_alias, weak_alias and compat_symbol definitions.
	* sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S: Remove unneeded
	file.
	* sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-ppc32.S: New
	file: default copysign implementation for PPC32.
	* sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign.c: New file:
	multiarch copysign for PPC32.
	* sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysignf.c: New file:
	multiarch copysignf for PPC32.
	* sysdeps/powerpc/powerpc32/fpu/multiarch/Makefile: Add copysign and
	copysignf objects.

--

diff --git a/sysdeps/powerpc/powerpc32/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc32/fpu/multiarch/Makefile
index d7850a1..afe1210 100644
--- a/sysdeps/powerpc/powerpc32/fpu/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc32/fpu/multiarch/Makefile
@@ -2,7 +2,8 @@ ifeq ($(subdir),math)
 sysdep_routines += s_isnan-power7 s_isnan-power6 s_isnan-power5 s_isnan-ppc32 \
 		   s_isnanf-power6 s_isnanf-power5 s_isnanf-ppc32 \
 		   s_isinf-power7 s_isinf-ppc32 s_isinff-ppc32 \
-		   s_finite-power7 s_finite-ppc32 s_finitef-ppc32
+		   s_finite-power7 s_finite-ppc32 s_finitef-ppc32 \
+		   s_copysign-power6 s_copysign-ppc32
 
 libm-sysdep_routines += s_llrintf-power6 s_llrintf-power4 s_llrintf-ppc32 \
 			s_llrint-power6 s_llrint-power4 s_llrint-ppc32 \
@@ -18,7 +19,8 @@ libm-sysdep_routines += s_llrintf-power6 s_llrintf-power4 s_llrintf-ppc32 \
 			s_floor-power5+ s_floor-ppc32 s_floorf-power5+ \
 			s_floorf-ppc32 s_round-power5+ s_round-ppc32 \
 			s_roundf-power5+ s_roundf-ppc32 s_trunc-power5+ \
-			s_trunc-ppc32 s_truncf-power5+ s_truncf-ppc32
+			s_trunc-ppc32 s_truncf-power5+ s_truncf-ppc32 \
+			s_copysign-power6 s_copysign-ppc32
 
 CFLAGS-s_llround.c = -fno-builtin-llroundf
 endif
diff --git a/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-power6.S b/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-power6.S
new file mode 100644
index 0000000..7aa28e1
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-power6.S
@@ -0,0 +1,34 @@
+/* copysign().  PowerPC32/POWER6 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>
+
+/* double [f1] copysign (double [f1] x, double [f2] y);
+   copysign(x,y) returns a value with the magnitude of x and
+   with the sign bit of y.  */
+
+	.section    ".text"
+	.type	    __copysign, @function
+	.machine    power6
+EALIGN (__copysign_power6, 4, 0)
+	CALL_MCOUNT
+	fcpsgn	fp1,fp2,fp1
+	blr
+END (__copysign_power6)
diff --git a/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-ppc32.S b/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-ppc32.S
new file mode 100644
index 0000000..be31939
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign-ppc32.S
@@ -0,0 +1,35 @@
+/* copysign().  PowerPC32 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_ppc32
+#undef hidden_def
+#define hidden_def(name)
+  strong_alias (__copysign_ppc32, __GI___copysign)
+
+#include <sysdeps/powerpc/powerpc32/fpu/s_copysign.S>
diff --git a/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign.c b/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysign.c
new file mode 100644
index 0000000..a4b5239
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/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_ppc32 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_ppc32);
+
+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/powerpc32/fpu/multiarch/s_copysignf.c b/sysdeps/powerpc/powerpc32/fpu/multiarch/s_copysignf.c
new file mode 100644
index 0000000..7c5ef4f
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/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_ppc32 attribute_hidden;
+extern __typeof (__copysignf) __copysign_power6 attribute_hidden;
+
+libc_ifunc (__copysignf,
+	    (hwcap & PPC_FEATURE_ARCH_2_05)
+	    ? __copysign_power6
+            : __copysign_ppc32);
+
+weak_alias (__copysignf, copysignf)
diff --git a/sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S b/sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S
deleted file mode 100644
index 1b8d73a..0000000
--- a/sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S
+++ /dev/null
@@ -1,58 +0,0 @@
-/* copysign().  PowerPC32/POWER6 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>
-
-/* double [f1] copysign (double [f1] x, double [f2] y);
-   copysign(x,y) returns a value with the magnitude of x and
-   with the sign bit of y.  */
-
-	.section    ".text"
-	.type	    __copysign, @function
-	.machine    power6
-EALIGN (__copysign, 4, 0)
-	CALL_MCOUNT
-	fcpsgn	fp1,fp2,fp1
-	blr
-END (__copysign)
-
-hidden_def (__copysign)
-weak_alias (__copysign, copysign)
-
-/* It turns out that the 'double' version will also always work for
-   single-precision.  */
-strong_alias (__copysign, __copysignf)
-hidden_def (__copysignf)
-weak_alias (__copysignf, copysignf)
-
-#ifdef NO_LONG_DOUBLE
-strong_alias (__copysign, __copysignl)
-weak_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
-#else
-# if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
-compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
-# endif
-#endif
diff --git a/sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S b/sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S
deleted file mode 100644
index d4aa702..0000000
--- a/sysdeps/powerpc/powerpc32/power6/fpu/s_copysignf.S
+++ /dev/null
@@ -1 +0,0 @@
-/* This function uses the same code as s_copysign.S.  */
-- 
1.7.1