From b860ebda47c7964db0582d65ad949780c4c784c5 Mon Sep 17 00:00:00 2001
From: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
Date: Wed, 30 Jul 2014 05:39:07 -0500
Subject: [PATCH] PowerPC: multiarch strlen for PowerPC64
commit a65f4904ab96de789d13f2c4f27c2d82959a546d
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date: Fri Dec 13 14:38:17 2013 -0500
---
sysdeps/powerpc/powerpc64/multiarch/Makefile | 2 +-
.../powerpc/powerpc64/multiarch/ifunc-impl-list.c | 7 ++++
.../powerpc/powerpc64/multiarch/strlen-power7.S | 38 ++++++++++++++++++++
sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S | 40 +++++++++++++++++++++
sysdeps/powerpc/powerpc64/multiarch/strlen.c | 41 ++++++++++++++++++++++
5 files changed, 127 insertions(+), 1 deletion(-)
create mode 100644 sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S
create mode 100644 sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
create mode 100644 sysdeps/powerpc/powerpc64/multiarch/strlen.c
diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile
index 695112c..9da7be1 100644
--- glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile
+++ glibc-2.17-c758a686/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 glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index 5b15c3f..bdc908b 100644
--- glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ glibc-2.17-c758a686/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 glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S
new file mode 100644
index 0000000..a38521d
--- /dev/null
+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S
@@ -0,0 +1,38 @@
+/* Optimized strlen implementation for POWER7.
+ Copyright (C) 2013-2014 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;
+
+#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 glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
new file mode 100644
index 0000000..b463b3a
--- /dev/null
+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
@@ -0,0 +1,40 @@
+/* Default strlen implementation for PowerPC64.
+ Copyright (C) 2013-2014 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;
+
+# 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)
+#endif
+
+#include <sysdeps/powerpc/powerpc64/strlen.S>
diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen.c glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen.c
new file mode 100644
index 0000000..d2c26e9
--- /dev/null
+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/strlen.c
@@ -0,0 +1,41 @@
+/* Multiple versions of strlen. PowerPC64 version.
+ Copyright (C) 2013-2014 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
+/* Redefine strlen so that the compiler won't complain about the type
+ mismatch with the IFUNC selector in strong_alias, below. */
+# undef strlen
+# define strlen __redirect_strlen
+# include <string.h>
+# include <shlib-compat.h>
+# include "init-arch.h"
+
+extern __typeof (__redirect_strlen) __libc_strlen;
+
+extern __typeof (__redirect_strlen) __strlen_ppc attribute_hidden;
+extern __typeof (__redirect_strlen) __strlen_power7 attribute_hidden;
+
+libc_ifunc (__libc_strlen,
+ (hwcap & PPC_FEATURE_HAS_VSX)
+ ? __strlen_power7
+ : __strlen_ppc);
+
+#undef strlen
+strong_alias (__libc_strlen, strlen)
+libc_hidden_ver (__libc_strlen, strlen)
+#endif
--
1.8.3.1