This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

[PATCH 20/22] PowerPC: multiarch strcpy 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: Tue, 10 Dec 2013 10:30:50 -0200
Subject: [PATCH 20/22] PowerPC: multiarch strcpy for PowerPC64
Authentication-results: sourceware.org; auth=none
References: <52A700A8 dot 3020307 at linux dot vnet dot ibm dot com>

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

	* sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strcpy
	multiarch implementations.
	* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy-power7.c: New file.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.c: New file.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy.c : New file:
	multiarch strcpy for PPC64.

--

diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
index b118022..f9e9297 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile
@@ -12,7 +12,8 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
 		   strchrnul-power7 strchrnul-ppc64 wcschr-power7 \
 		   wcschr-power6 wcschr-ppc64 wcsrchr-power7 wcsrchr-power6 \
 		   wcsrchr-ppc64 wcscpy-power7 wcscpy-power6 wcscpy-ppc64 \
-		   wordcopy-power7 wordcopy-power6 wordcopy-ppc64
+		   wordcopy-power7 wordcopy-power6 wordcopy-ppc64 \
+		   strcpy-power7 strcpy-ppc64
 
 CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
 CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index ae02476..3afbd71 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
@@ -71,6 +71,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 			      __memset_power4)
 	      IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ppc))
 
+  /* Support sysdeps/powerpc/powerpc64/multiarch/strcpy.c.  */
+  IFUNC_IMPL (i, name, strcpy,
+	      IFUNC_IMPL_ADD (array, i, strcpy, hwcap & PPC_FEATURE_HAS_VSX,
+			      __strcpy_power7)
+	      IFUNC_IMPL_ADD (array, i, strcpy, 1,
+			      __strcpy_ppc))
+
   /* Support sysdeps/powerpc/powerpc64/multiarch/strlen.c.  */
   IFUNC_IMPL (i, name, strlen,
 	      IFUNC_IMPL_ADD (array, i, strlen, hwcap & PPC_FEATURE_HAS_VSX,
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcpy-power7.S b/sysdeps/powerpc/powerpc64/multiarch/strcpy-power7.S
new file mode 100644
index 0000000..127422f
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcpy-power7.S
@@ -0,0 +1,40 @@
+/* Optimized strcpy implementation for POWER7.
+   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>
+
+#undef EALIGN
+#define EALIGN(name, alignt, words)				\
+  .section ".text";						\
+  ENTRY_2(__strcpy_power7)					\
+  .align ALIGNARG(alignt);					\
+  EALIGN_W_##words;						\
+  BODY_LABEL(__strcpy_power7):					\
+  cfi_startproc;						\
+  LOCALENTRY(__strcpy_power7)
+
+#undef END
+#define END(name)						\
+  cfi_endproc;							\
+  TRACEBACK(__strcpy_power7)					\
+  END_2(__strcpy_power7)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include <sysdeps/powerpc/powerpc64/power7/strcpy.S>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S
new file mode 100644
index 0000000..255fc3f
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S
@@ -0,0 +1,43 @@
+/* Default strcpy implementation for PowerPC64.
+   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>
+
+#if defined SHARED && !defined NOT_IN_libc
+# undef EALIGN
+# define EALIGN(name, alignt, words)				\
+  .section ".text";						\
+  ENTRY_2(__strcpy_ppc)						\
+  .align ALIGNARG(alignt);					\
+  EALIGN_W_##words;						\
+  BODY_LABEL(__strcpy_ppc):					\
+  cfi_startproc;						\
+  LOCALENTRY(__strcpy_ppc)
+
+# undef END
+# define END(name)						\
+  cfi_endproc;							\
+  TRACEBACK(__strcpy_ppc)					\
+  END_2(__strcpy_ppc)
+
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name)				\
+    .globl __GI_strcpy; __GI_strcpy = __strcpy_ppc
+#endif
+
+#include <sysdeps/powerpc/powerpc64/strcpy.S>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcpy.c b/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
new file mode 100644
index 0000000..8d555c9
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
@@ -0,0 +1,31 @@
+/* Multiple versions of strcpy. PowerPC64 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/>.  */
+
+#if defined SHARED && !defined NOT_IN_libc
+# include <string.h>
+# include <shlib-compat.h>
+# include "init-arch.h"
+
+extern __typeof (strcpy) __strcpy_ppc attribute_hidden;
+extern __typeof (strcpy) __strcpy_power7 attribute_hidden;
+
+libc_ifunc (strcpy,
+            (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __strcpy_power7
+            : __strcpy_ppc);
+#endif

Follow-Ups:
- Re: [PATCH 20/22] PowerPC: multiarch strcpy for PowerPC64
  - From: Steven Munroe

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]