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From a8d62012e2b47e8f62fafe17ab1042b0415a06ea Mon Sep 17 00:00:00 2001
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From: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
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Date: Wed, 30 Jul 2014 05:20:37 -0500
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Subject: [PATCH] PowerPC: multiarch memchr for PowerPC64
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commit 870f867648fc62e230dad80cd34bd599f08e2193
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Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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Date: Fri Dec 13 14:35:28 2013 -0500
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Added string/memchr.c and
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sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c aart from
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original commit
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---
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string/memchr.c | 6 +++-
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.../powerpc32/power4/multiarch/memchr-ppc32.c | 34 ++++++++++++++++++
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sysdeps/powerpc/powerpc64/multiarch/Makefile | 2 +-
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.../powerpc/powerpc64/multiarch/ifunc-impl-list.c | 8 +++++
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.../powerpc/powerpc64/multiarch/memchr-power7.S | 40 ++++++++++++++++++++++
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sysdeps/powerpc/powerpc64/multiarch/memchr-ppc64.c | 19 ++++++++++
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sysdeps/powerpc/powerpc64/multiarch/memchr.c | 38 ++++++++++++++++++++
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7 files changed, 145 insertions(+), 2 deletions(-)
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create mode 100644 sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c
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create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memchr-power7.S
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create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memchr-ppc64.c
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create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memchr.c
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diff --git a/string/memchr.c b/string/memchr.c
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index 22637cf..822c0a4 100644
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--- a/string/memchr.c
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+++ b/string/memchr.c
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@@ -56,9 +56,13 @@
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#undef memchr
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#undef __memchr
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+#ifndef MEMCHR
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+# define MEMCHR __memchr
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+#endif
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+
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/* Search no more than N bytes of S for C. */
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__ptr_t
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-__memchr (s, c_in, n)
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+MEMCHR (s, c_in, n)
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const __ptr_t s;
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int c_in;
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size_t n;
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diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c
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new file mode 100644
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index 0000000..43c5652
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c
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@@ -0,0 +1,34 @@
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+/* PowerPC32 default implementation of memchr.
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+ Copyright (C) 2013-2014 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#include <string.h>
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+
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+#define MEMCHR __memchr_ppc
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+
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+#undef weak_alias
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+#define weak_alias(a, b)
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+
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+#ifdef SHARED
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+# undef libc_hidden_builtin_def
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+# define libc_hidden_builtin_def(name) \
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+ __hidden_ver1 (__memchr_ppc, __GI_memchr, __memchr_ppc);
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+#endif
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+
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+extern __typeof (memchr) __memchr_ppc attribute_hidden;
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+
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+#include <string/memchr.c>
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
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index 22560e8..b2815e7 100644
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--- a/sysdeps/powerpc/powerpc64/multiarch/Makefile
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+++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile
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@@ -3,5 +3,5 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
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memcpy-power4 memcpy-ppc64 memcmp-power7 memcmp-power4 \
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memcmp-ppc64 memset-power7 memset-power6 memset-power4 \
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memset-ppc64 bzero-power4 bzero-power6 bzero-power7 \
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- mempcpy-power7 mempcpy-ppc64
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+ mempcpy-power7 mempcpy-ppc64 memchr-power7 memchr-ppc64
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endif
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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index c72c229..663e294 100644
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--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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@@ -98,5 +98,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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IFUNC_IMPL_ADD (array, i, mempcpy, 1,
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__mempcpy_ppc))
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+ /* Support sysdeps/powerpc/powerpc64/multiarch/memchr.c. */
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+ IFUNC_IMPL (i, name, memchr,
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+ IFUNC_IMPL_ADD (array, i, memchr,
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+ hwcap & PPC_FEATURE_HAS_VSX,
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+ __memchr_power7)
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+ IFUNC_IMPL_ADD (array, i, memchr, 1,
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+ __memchr_ppc))
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+
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return i;
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}
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/memchr-power7.S b/sysdeps/powerpc/powerpc64/multiarch/memchr-power7.S
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new file mode 100644
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index 0000000..b1b4ec7
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc64/multiarch/memchr-power7.S
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@@ -0,0 +1,40 @@
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+/* Optimized memchr implementation for PowerPC64/POWER7.
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+ Copyright (C) 2013-2014 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#include <sysdep.h>
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+
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+#undef ENTRY
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+#define ENTRY(name) \
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+ .section ".text"; \
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+ ENTRY_2(__memchr_power7) \
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+ .align ALIGNARG(2); \
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+ BODY_LABEL(__memchr_power7): \
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+ cfi_startproc;
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+
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+#undef END
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+#define END(name) \
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+ cfi_endproc; \
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+ TRACEBACK(__memchr_power7) \
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+ END_2(__memchr_power7)
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+
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+#undef libc_hidden_builtin_def
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+#define libc_hidden_builtin_def(name)
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+#undef weak_alias
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+#define weak_alias(name,alias)
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+
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+#include <sysdeps/powerpc/powerpc64/power7/memchr.S>
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/memchr-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/memchr-ppc64.c
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new file mode 100644
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index 0000000..9e2a711
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc64/multiarch/memchr-ppc64.c
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@@ -0,0 +1,19 @@
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+/* PowerPC64 default implementation of memchr.
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+ Copyright (C) 2013-2014 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#include <sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c>
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/memchr.c b/sysdeps/powerpc/powerpc64/multiarch/memchr.c
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new file mode 100644
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index 0000000..ca0f714
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc64/multiarch/memchr.c
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@@ -0,0 +1,38 @@
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+/* Multiple versions of memchr.
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+ Copyright (C) 2013-2014 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#ifndef NOT_IN_libc
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+# include <string.h>
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+# include <shlib-compat.h>
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+# include "init-arch.h"
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+
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+extern __typeof (__memchr) __memchr_ppc attribute_hidden;
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+extern __typeof (__memchr) __memchr_power7 attribute_hidden;
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+
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+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
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+ ifunc symbol properly. */
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+libc_ifunc (__memchr,
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+ (hwcap & PPC_FEATURE_HAS_VSX)
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+ ? __memchr_power7
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+ : __memchr_ppc);
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+
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+weak_alias (__memchr, memchr)
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+libc_hidden_builtin_def (memchr)
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+#else
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+#include <string/memchr.c>
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+#endif
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--
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1.8.3.1
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