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[PATCH 10/15] PowerPC: multiarch llrint/lrint for PowerPC64

From: Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>
To: "GNU C. Library" <libc-alpha at sourceware dot org>
Date: Thu, 12 Dec 2013 11:29:17 -0200
Subject: [PATCH 10/15] PowerPC: multiarch llrint/lrint for PowerPC64
Authentication-results: sourceware.org; auth=none
References: <52A9B1C5 dot 7040201 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 llrint and
	lrint multiarch implementation.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-power6x.S: New
	file.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-ppc64.S: New file.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint.c: New file:
	multiarch llrint for PPC64.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_lrint.c: New file:
	multiarch lrint for PPC64.

--

diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
index 9e8a14d..0fb76b5 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile
@@ -11,5 +11,6 @@ libm-sysdep_routines += s_isnan-power7 s_isnan-power6x s_isnan-power6 \
 			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_copysign-power6 s_copysign-ppc64
+			s_copysign-power6 s_copysign-ppc64 s_llrint-power6x \
+			s_llrint-ppc64
 endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-power6x.S b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-power6x.S
new file mode 100644
index 0000000..36b1546
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-power6x.S
@@ -0,0 +1,31 @@
+/* Round double to long int.  PowerPC64/POWER6X 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)
+
+#define __llrint __llrint_power6x
+
+#include <sysdeps/powerpc/powerpc64/power6x/fpu/s_llrint.S>
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-ppc64.S b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-ppc64.S
new file mode 100644
index 0000000..22fbe60
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-ppc64.S
@@ -0,0 +1,31 @@
+/* Round double to long int.  PowerPC32 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)
+
+#define __llrint __llrint_ppc64
+
+#include <sysdeps/powerpc/powerpc64/fpu/s_llrint.S>
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint.c
new file mode 100644
index 0000000..dfc6ddf
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint.c
@@ -0,0 +1,57 @@
+/* Multiple versions of llrint.
+   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 lrint/__lrint so that the compiler won't complain about the type
+   mismatch with the IFUNC selector in strong_alias below.  */
+#define lrint __hidden_lrint
+#define __lrint __hidden___lrint
+
+#include <math.h>
+#include <math_ldbl_opt.h>
+#undef lrint
+#undef __lrint
+#include <shlib-compat.h>
+#include "init-arch.h"
+
+extern __typeof (__llrint) __llrint_ppc64 attribute_hidden;
+extern __typeof (__llrint) __llrint_power6x attribute_hidden;
+
+libc_ifunc (__llrint,
+	    (hwcap & PPC_FEATURE_POWER6_EXT)
+	    ? __llrint_power6x
+            : __llrint_ppc64);
+
+weak_alias (__llrint, llrint)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__llrint, __llrintl)
+weak_alias (__llrint, llrintl)
+#endif
+#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
+compat_symbol (libm, __llrint, llrintl, GLIBC_2_1);
+#endif
+
+/* long has the same width as long long on PowerPC64.  */
+strong_alias (__llrint, __lrint)
+weak_alias (__lrint, lrint)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__lrint, __lrintl)
+weak_alias (__lrint, lrintl)
+#endif
+#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
+compat_symbol (libm, __lrint, lrintl, GLIBC_2_1);
+#endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_lrint.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_lrint.c
new file mode 100644
index 0000000..d092862
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_lrint.c
@@ -0,0 +1 @@
+ /* __lrint is in s_llrint.c  */

Follow-Ups:
- Re: [PATCH 10/15] PowerPC: multiarch llrint/lrint for PowerPC64
  - From: Steven Munroe

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