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From dc5a73198455f4492a44dbc71fdadeb7551d5810 Mon Sep 17 00:00:00 2001
From: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
Date: Wed, 30 Jul 2014 05:41:40 -0500
Subject: [PATCH] PowerPC: multiarch strnlen for PowerPC64

commit 62982bf9782f0f3ef4259fc03b1b557f1332b182
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date:   Fri Dec 13 14:38:50 2013 -0500

Added sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-ppc32.c
apart from original commit.
---
 .../powerpc32/power4/multiarch/strnlen-ppc32.c     | 26 ++++++++++++++
 sysdeps/powerpc/powerpc64/multiarch/Makefile       |  3 +-
 .../powerpc/powerpc64/multiarch/ifunc-impl-list.c  |  7 ++++
 .../powerpc/powerpc64/multiarch/strnlen-power7.S   | 40 ++++++++++++++++++++++
 .../powerpc/powerpc64/multiarch/strnlen-ppc64.c    | 18 ++++++++++
 sysdeps/powerpc/powerpc64/multiarch/strnlen.c      | 36 +++++++++++++++++++
 6 files changed, 129 insertions(+), 1 deletion(-)
 create mode 100644 sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-ppc32.c
 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/strnlen-power7.S
 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/strnlen-ppc64.c
 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/strnlen.c

diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-ppc32.c
new file mode 100644
index 0000000..676d837
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-ppc32.c
@@ -0,0 +1,26 @@
+/* Default strnlen implementation for PowerPC32.
+   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/>.  */
+
+#define STRNLEN  __strnlen_ppc
+#ifdef SHARED
+# undef libc_hidden_def
+# define libc_hidden_def(name)  \
+    __hidden_ver1 (__strnlen_ppc, __GI_strnlen, __strnlen_ppc);
+#endif
+
+#include <string/strnlen.c>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
index 9da7be1..3285fd7 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile
@@ -5,5 +5,6 @@ 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 strlen-power7 strlen-ppc64
+                  rawmemchr-ppc64 strlen-power7 strlen-ppc64 strnlen-power7 \
+                  strnlen-ppc64
 endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index bdc908b..c9125b8 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
@@ -129,5 +129,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
              IFUNC_IMPL_ADD (array, i, rawmemchr, 1,
                              __rawmemchr_ppc))
 
+  /* Support sysdeps/powerpc/powerpc64/multiarch/strnlen.c.  */
+  IFUNC_IMPL (i, name, strnlen,
+             IFUNC_IMPL_ADD (array, i, strnlen, hwcap & PPC_FEATURE_HAS_VSX,
+                             __strnlen_power7)
+             IFUNC_IMPL_ADD (array, i, strnlen, 1,
+                             __strnlen_ppc))
+
   return i;
 }
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strnlen-power7.S b/sysdeps/powerpc/powerpc64/multiarch/strnlen-power7.S
new file mode 100644
index 0000000..909aae8
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strnlen-power7.S
@@ -0,0 +1,40 @@
+/* Optimized strnlen version 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(__strnlen_power7)					\
+  .align ALIGNARG(2);						\
+  BODY_LABEL(__strnlen_power7):					\
+  cfi_startproc;
+
+#undef END
+#define END(name)						\
+  cfi_endproc;							\
+  TRACEBACK(__strnlen_power7)					\
+  END_2(__strnlen_power7)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+#undef weak_alias
+#define weak_alias(name, alias)
+
+#include <sysdeps/powerpc/powerpc64/power7/strnlen.S>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strnlen-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strnlen-ppc64.c
new file mode 100644
index 0000000..9d23994
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strnlen-ppc64.c
@@ -0,0 +1,18 @@
+/* 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 <sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-ppc32.c>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strnlen.c b/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
new file mode 100644
index 0000000..3926031
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
@@ -0,0 +1,36 @@
+/* Multiple versions of strnlen.
+   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/>.  */
+
+#ifndef NOT_IN_libc
+# include <string.h>
+# include <shlib-compat.h>
+# include "init-arch.h"
+
+extern __typeof (__strnlen) __strnlen_ppc attribute_hidden;
+extern __typeof (__strnlen) __strnlen_power7 attribute_hidden;
+
+libc_ifunc (__strnlen,
+            (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __strnlen_power7
+            : __strnlen_ppc);
+weak_alias (__strnlen, strnlen)
+libc_hidden_def (strnlen)
+
+#else
+#include <string/strnlen.c>
+#endif
-- 
1.8.3.1