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From 6a69f5d33526bf8dafd65f3b53719402ce09d566 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 05:31:40 -0500
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Subject: [PATCH] PowerPC: multiarch memrchr for PowerPC64
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commit 1fd005ad2f8ca30d44d5bfa036422b4ec281ea4a
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Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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Date: Fri Dec 13 14:37:26 2013 -0500
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Added sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c
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apart from original commit
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---
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.../powerpc32/power4/multiarch/memrchr-ppc32.c | 25 ++++++++++++++
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sysdeps/powerpc/powerpc64/multiarch/Makefile | 3 +-
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.../powerpc/powerpc64/multiarch/ifunc-impl-list.c | 8 +++++
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.../powerpc/powerpc64/multiarch/memrchr-power7.S | 40 ++++++++++++++++++++++
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.../powerpc/powerpc64/multiarch/memrchr-ppc64.c | 19 ++++++++++
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sysdeps/powerpc/powerpc64/multiarch/memrchr.c | 37 ++++++++++++++++++++
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6 files changed, 131 insertions(+), 1 deletion(-)
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create mode 100644 sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c
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create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memrchr-power7.S
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create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memrchr-ppc64.c
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create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memrchr.c
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diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c
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new file mode 100644
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index 0000000..c30e7d6
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--- /dev/null
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+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c
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@@ -0,0 +1,25 @@
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+/* PowerPC32 default implementation of memrchr.
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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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+# define MEMRCHR __memrchr_ppc
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+# include <string.h>
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+extern void *__memrchr_ppc (const void *, int, size_t);
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+#endif
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+
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+#include <string/memrchr.c>
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diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile
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index b2815e7..db765f2 100644
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--- glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile
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+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile
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@@ -3,5 +3,6 @@ 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 memchr-power7 memchr-ppc64
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+ mempcpy-power7 mempcpy-ppc64 memchr-power7 memchr-ppc64 \
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+ memrchr-power7 memrchr-ppc64
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endif
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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
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index 663e294..a0700dc 100644
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--- glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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@@ -106,5 +106,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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IFUNC_IMPL_ADD (array, i, memchr, 1,
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__memchr_ppc))
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+ /* Support sysdeps/powerpc/powerpc64/multiarch/memrchr.c. */
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+ IFUNC_IMPL (i, name, memrchr,
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+ IFUNC_IMPL_ADD (array, i, memrchr,
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+ hwcap & PPC_FEATURE_HAS_VSX,
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+ __memrchr_power7)
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+ IFUNC_IMPL_ADD (array, i, memrchr, 1,
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+ __memrchr_ppc))
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+
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return i;
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}
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diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr-power7.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr-power7.S
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new file mode 100644
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index 0000000..42ee8e2
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--- /dev/null
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+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr-power7.S
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@@ -0,0 +1,40 @@
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+/* Optimized memrchr 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(__memrchr_power7) \
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+ .align ALIGNARG(2); \
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+ BODY_LABEL(__memrchr_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(__memrchr_power7) \
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+ END_2(__memrchr_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/memrchr.S>
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diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr-ppc64.c glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr-ppc64.c
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new file mode 100644
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index 0000000..c2ee4be
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--- /dev/null
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+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr-ppc64.c
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@@ -0,0 +1,19 @@
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+/* PowerPC64 default implementation of memrchr.
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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/memrchr-ppc32.c>
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diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr.c glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr.c
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new file mode 100644
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index 0000000..610a957
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--- /dev/null
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+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memrchr.c
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@@ -0,0 +1,37 @@
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+/* Multiple versions of memrchr.
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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 (__memrchr) __memrchr_ppc attribute_hidden;
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+extern __typeof (__memrchr) __memrchr_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 (__memrchr,
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+ (hwcap & PPC_FEATURE_HAS_VSX)
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+ ? __memrchr_power7
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+ : __memrchr_ppc);
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+
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+weak_alias (__memrchr, memrchr)
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+#else
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+#include <string/memrchr.c>
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+#endif
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--
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1.8.3.1
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