PowerPC: multiarch strlen for PowerPC64

6 files changed, 131 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 2ffcc08337..46bdf939d2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2013-12-13  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
 
+	* sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strlen multiarch
+	implementations.
+	* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+	(__libc_ifunc_impl_list): Likewise.
+	* sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S: New file.
+	* sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S: New file.
+	* sysdeps/powerpc/powerpc64/multiarch/strlen.c: New file: multiarch
+	strlen for PPC64.
+
+2013-12-13  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
+
 	* sysdeps/powerpc/powerpc64/multiarch/Makefile: Add rawmemch multiarch
 	implementations.
 	* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
index 88db167d48..4bd2408bc5 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile
@@ -5,5 +5,5 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
 		   memset-ppc64 bzero-power4 bzero-power6 bzero-power7 \
 		   mempcpy-power7 mempcpy-ppc64 memchr-power7 memchr-ppc64 \
 		   memrchr-power7 memrchr-ppc64 rawmemchr-power7 \
-		   rawmemchr-ppc64
+		   rawmemchr-ppc64 strlen-power7 strlen-ppc64
 endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index 4b64cd6511..385fdd5e34 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
@@ -70,6 +70,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_POWER4,
 			      __memset_power4)
 	      IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ppc))
+
+  /* Support sysdeps/powerpc/powerpc64/multiarch/strlen.c.  */
+  IFUNC_IMPL (i, name, strlen,
+	      IFUNC_IMPL_ADD (array, i, strlen, hwcap & PPC_FEATURE_HAS_VSX,
+			      __strlen_power7)
+	      IFUNC_IMPL_ADD (array, i, strlen, 1,
+			      __strlen_ppc))
 #endif
 
   /* Support sysdeps/powerpc/powerpc64/multiarch/memcmp.c.  */
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S b/sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S
new file mode 100644
index 0000000000..1027d7d076
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S
@@ -0,0 +1,39 @@
+/* Optimized strlen 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 ENTRY
+#define ENTRY(name)						\
+  .section ".text";						\
+  ENTRY_2(__strlen_power7)					\
+  .align ALIGNARG(2);						\
+  BODY_LABEL(__strlen_power7):					\
+  cfi_startproc;						\
+  LOCALENTRY(__strlen_power7)
+
+#undef END
+#define END(name)						\
+  cfi_endproc;							\
+  TRACEBACK(__strlen_power7)					\
+  END_2(__strlen_power7)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include <sysdeps/powerpc/powerpc64/power7/strlen.S>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
new file mode 100644
index 0000000000..a78460efbd
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
@@ -0,0 +1,42 @@
+/* Default strlen 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 ENTRY
+# define ENTRY(name)						\
+  .section ".text";						\
+  ENTRY_2(__strlen_ppc)						\
+  .align ALIGNARG(2);						\
+  BODY_LABEL(__strlen_ppc):					\
+  cfi_startproc;						\
+  LOCALENTRY(__strlen_ppc)
+
+# undef END
+# define END(name)						\
+  cfi_endproc;							\
+  TRACEBACK(__strlen_ppc)					\
+  END_2(__strlen_ppc)
+
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name)				\
+    .globl __GI_strlen; __GI_strlen = __strlen_ppc
+#endif
+
+#include <sysdeps/powerpc/powerpc64/strlen.S>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strlen.c b/sysdeps/powerpc/powerpc64/multiarch/strlen.c
new file mode 100644
index 0000000000..21b9294707
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strlen.c
@@ -0,0 +1,31 @@
+/* Multiple versions of strlen. 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 (strlen) __strlen_ppc attribute_hidden;
+extern __typeof (strlen) __strlen_power7 attribute_hidden;
+
+libc_ifunc (strlen,
+            (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __strlen_power7
+            : __strlen_ppc);
+#endif