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Backport of:
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commit 94c9680945369d63ef9ed266a29f28ebaaaeb5ce
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Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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Date: Tue Dec 23 13:36:34 2014 -0500
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powerpc: Optimized strcat for POWER8/PPC64
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With new optimized strcpy for POWER8, this patch adds an optimized
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strcat which uses it along with default implementation at strings/.
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ChangeLog:
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2015-01-13 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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* sysdeps/powerpc/powerpc64/multiarch/Makefile [sysdep_routines]: Add
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strncat-power8 object.
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* sysdeps/powerpc/powerpc64/multiarch/strcat.c (strcat): Add
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__strcat_power8 implementation.
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* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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(__libc_ifunc_impl_list): Add __strcat_power8 implementation.
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* sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c: New file:
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optimized strcat for power8.
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and its dependency:
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commit bc8ea38590070604006399e42469087e943fc8ec
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Author: Vidya Ranganathan <vidya@linux.vnet.ibm.com>
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Date: Wed Jun 11 22:21:20 2014 -0500
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PowerPC: strcat optimization for PPC64/POWER7
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This patch adds an ifunc power7 strcat symbol that uses the logic on
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sysdeps/powerpc/strcat.c but call power7 strlen/strcpy symbols instead
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of default ones.
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ChangeLog:
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2014-07-02 Vidya Ranganathan <vidya@linux.vnet.ibm.com>
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Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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* sysdeps/powerpc/strcat.c: Using macro to redefine symbol name.
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* sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strcat multiarch
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optimizations.
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* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c:
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(__libc_ifunc_impl_list): Likewise.
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* sysdeps/powerpc/powerpc64/multiarch/strcat.c: New file:
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multiarch strcat for PPC64.
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* sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c: New file/
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* sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c: New file.
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
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index 1cdd5d6..7ebfc7e 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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@@ -6,6 +6,7 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
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mempcpy-power7 mempcpy-ppc64 memchr-power7 memchr-ppc64 \
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memrchr-power7 memrchr-ppc64 rawmemchr-power7 \
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stpcpy-power8 stpcpy-power7 stpcpy-ppc64 \
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+ strcat-power8 strcat-power7 strcat-ppc64 \
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strcpy-power8 strcpy-power7 strcpy-ppc64 \
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rawmemchr-ppc64 strlen-power7 strlen-ppc64 strnlen-power7 \
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strnlen-ppc64 strcasecmp-power7 strcasecmp_l-power7 \
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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 e89fd3e..4e5bb17 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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@@ -211,6 +211,17 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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IFUNC_IMPL_ADD (array, i, strncasecmp_l, 1,
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__strncasecmp_l_ppc))
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+ /* Support sysdeps/powerpc/powerpc64/multiarch/strcat.c. */
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+ IFUNC_IMPL (i, name, strcat,
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+ IFUNC_IMPL_ADD (array, i, strcat,
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+ hwcap2 & PPC_FEATURE2_ARCH_2_07,
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+ __strcat_power8)
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+ IFUNC_IMPL_ADD (array, i, strcat,
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+ hwcap & PPC_FEATURE_HAS_VSX,
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+ __strcat_power7)
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+ IFUNC_IMPL_ADD (array, i, strcat, 1,
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+ __strcat_ppc))
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+
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/* Support sysdeps/powerpc/powerpc64/multiarch/wcschr.c. */
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IFUNC_IMPL (i, name, wcschr,
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IFUNC_IMPL_ADD (array, i, wcschr,
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c b/sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c
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new file mode 100644
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index 0000000..291a720
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c
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@@ -0,0 +1,31 @@
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+/* Copyright (C) 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 STRCAT __strcat_power7
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+
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+#undef libc_hidden_def
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+#define libc_hidden_def(name)
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+
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+extern typeof (strcpy) __strcpy_power7;
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+extern typeof (strlen) __strlen_power7;
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+
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+#define strcpy __strcpy_power7
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+#define strlen __strlen_power7
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+
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+#include <sysdeps/powerpc/strcat.c>
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c b/sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c
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new file mode 100644
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index 0000000..6c7544c
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c
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@@ -0,0 +1,30 @@
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+/* Copyright (C) 2015 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 STRCAT __strcat_power8
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+
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+#undef libc_hidden_def
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+#define libc_hidden_def(name)
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+
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+extern typeof (strcpy) __strcpy_power8;
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+extern typeof (strlen) __strlen_power7;
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+
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+#define strcpy __strcpy_power8
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+#define strlen __strlen_power7
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+#include <sysdeps/powerpc/strcat.c>
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c
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new file mode 100644
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index 0000000..1245764
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c
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@@ -0,0 +1,29 @@
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+/* Copyright (C) 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 STRCAT __strcat_ppc
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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 (__strcat_ppc, __GI_strcat, __strcat_ppc);
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+#endif
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+
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+extern __typeof (strcat) __strcat_ppc attribute_hidden;
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+
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+#include <sysdeps/powerpc/strcat.c>
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diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat.c b/sysdeps/powerpc/powerpc64/multiarch/strcat.c
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new file mode 100644
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index 0000000..847a62d
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--- /dev/null
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+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat.c
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@@ -0,0 +1,31 @@
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+/* Multiple versions of strcat. PowerPC64 version.
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+ Copyright (C) 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 (strcat) __strcat_ppc attribute_hidden;
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+extern __typeof (strcat) __strcat_power7 attribute_hidden;
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+
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+libc_ifunc (strcat,
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+ (hwcap & PPC_FEATURE_HAS_VSX)
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+ ? __strcat_power7
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+ : __strcat_ppc);
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+#endif
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diff --git a/sysdeps/powerpc/strcat.c b/sysdeps/powerpc/strcat.c
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index 28575d0..393bee6 100644
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--- a/sysdeps/powerpc/strcat.c
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+++ b/sysdeps/powerpc/strcat.c
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@@ -18,13 +18,16 @@
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#include <string.h>
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-#undef strcat
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+#ifndef STRCAT
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+# undef strcat
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+# define STRCAT strcat
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+#endif
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/* Append SRC on the end of DEST. */
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char *
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-strcat (char *dest, const char *src)
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+STRCAT(char *dest, const char *src)
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{
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strcpy (dest + strlen (dest), src);
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return dest;
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}
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-libc_hidden_builtin_def (strcat)
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+libc_hidden_builtin_def (STRCAT)
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