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291 lines
9.1 KiB
291 lines
9.1 KiB
9 months ago
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commit d2c4c403feddd6f0b9dbf31ca7541b37f90ee30a
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Author: Stefan Liebler <stli@linux.ibm.com>
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Date: Tue Dec 18 13:57:09 2018 +0100
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S390: Add z13 memmem ifunc variant.
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The new vector variant of memmem is using the common code
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implementation, but instead of calling the default
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mem* functions, the vector variants are called.
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ChangeLog:
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* sysdeps/s390/Makefile (sysdep_routines): Add memmem variants.
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* sysdeps/s390/multiarch/ifunc-impl-list.c
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(__libc_ifunc_impl_list): Add ifunc variants for memmem.
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* sysdeps/s390/ifunc-memmem.h: New file.
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* sysdeps/s390/memmem.c: Likewise.
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* sysdeps/s390/memmem-c.c: Likewise.
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* sysdeps/s390/memmem-vx.c: Likewise.
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diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile
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index 4441e7a5cf6fa167..47d606d3d5d99274 100644
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--- a/sysdeps/s390/Makefile
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+++ b/sysdeps/s390/Makefile
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@@ -35,5 +35,6 @@ sysdep_routines += bzero memset memset-z900 \
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memcmp memcmp-z900 \
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mempcpy memcpy memcpy-z900 \
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memmove memmove-c \
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- strstr strstr-vx strstr-c
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+ strstr strstr-vx strstr-c \
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+ memmem memmem-vx memmem-c
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endif
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diff --git a/sysdeps/s390/ifunc-memmem.h b/sysdeps/s390/ifunc-memmem.h
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new file mode 100644
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index 0000000000000000..0f860d8d40080acf
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--- /dev/null
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+++ b/sysdeps/s390/ifunc-memmem.h
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@@ -0,0 +1,52 @@
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+/* memmem variant information on S/390 version.
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+ Copyright (C) 2018 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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+#if defined USE_MULTIARCH && IS_IN (libc) \
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+ && ! defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
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+# define HAVE_MEMMEM_IFUNC 1
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+#else
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+# define HAVE_MEMMEM_IFUNC 0
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+#endif
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+
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+#ifdef HAVE_S390_VX_ASM_SUPPORT
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+# define HAVE_MEMMEM_IFUNC_AND_VX_SUPPORT HAVE_MEMMEM_IFUNC
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+#else
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+# define HAVE_MEMMEM_IFUNC_AND_VX_SUPPORT 0
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+#endif
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+
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+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
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+# define MEMMEM_DEFAULT MEMMEM_Z13
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+# define HAVE_MEMMEM_C 0
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+# define HAVE_MEMMEM_Z13 1
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+#else
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+# define MEMMEM_DEFAULT MEMMEM_C
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+# define HAVE_MEMMEM_C 1
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+# define HAVE_MEMMEM_Z13 HAVE_MEMMEM_IFUNC_AND_VX_SUPPORT
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+#endif
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+
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+#if HAVE_MEMMEM_C
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+# define MEMMEM_C __memmem_c
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+#else
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+# define MEMMEM_C NULL
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+#endif
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+
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+#if HAVE_MEMMEM_Z13
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+# define MEMMEM_Z13 __memmem_vx
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+#else
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+# define MEMMEM_Z13 NULL
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+#endif
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diff --git a/sysdeps/s390/memmem-c.c b/sysdeps/s390/memmem-c.c
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new file mode 100644
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index 0000000000000000..1d8ffefcb840b8d2
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--- /dev/null
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+++ b/sysdeps/s390/memmem-c.c
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@@ -0,0 +1,47 @@
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+/* Default memmem implementation for S/390.
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+ Copyright (C) 2018 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 <ifunc-memmem.h>
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+
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+#if HAVE_MEMMEM_C
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+# if HAVE_MEMMEM_IFUNC
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+# include <string.h>
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+
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+# ifndef _LIBC
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+# define memmem MEMMEM_C
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+# else
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+# define __memmem MEMMEM_C
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+# endif
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+
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+# if defined SHARED && IS_IN (libc)
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+# undef libc_hidden_def
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+# define libc_hidden_def(name) \
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+ strong_alias (__memmem_c, __memmem_c_1); \
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+ __hidden_ver1 (__memmem_c, __GI___memmem, __memmem_c);
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+
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+# undef libc_hidden_weak
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+# define libc_hidden_weak(name) \
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+ __hidden_ver1 (__memmem_c_1, __GI_memmem, __memmem_c_1) __attribute__((weak));
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+# endif
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+
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+# undef weak_alias
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+# define weak_alias(a, b)
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+# endif
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+
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+# include <string/memmem.c>
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+#endif
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diff --git a/sysdeps/s390/memmem-vx.c b/sysdeps/s390/memmem-vx.c
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new file mode 100644
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index 0000000000000000..af6e200e4e0af1a5
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--- /dev/null
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+++ b/sysdeps/s390/memmem-vx.c
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@@ -0,0 +1,61 @@
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+/* Default memmem implementation with vector string functions for S/390.
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+ Copyright (C) 2018 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 <ifunc-memmem.h>
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+
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+#if HAVE_MEMMEM_Z13
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+# include <string.h>
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+# if HAVE_MEMMEM_IFUNC
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+
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+# ifndef _LIBC
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+# define memmem MEMMEM_Z13
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+# else
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+# define __memmem MEMMEM_Z13
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+# endif
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+
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+# if defined SHARED && IS_IN (libc)
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+# undef libc_hidden_def
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+# undef libc_hidden_weak
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+
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+# if HAVE_MEMMEM_C
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+# define libc_hidden_def(name)
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+# define libc_hidden_weak(name)
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+# else
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+# define libc_hidden_def(name) \
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+ strong_alias (__memmem_vx, __memmem_vx_1); \
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+ __hidden_ver1 (__memmem_vx, __GI___memmem, __memmem_vx);
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+
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+# define libc_hidden_weak(name) \
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+ __hidden_ver1 (__memmem_vx_1, __GI_memmem, __memmem_vx_1) __attribute__((weak));
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+# endif
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+# endif
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+
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+# undef weak_alias
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+# define weak_alias(a, b)
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+# endif
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+
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+# ifdef USE_MULTIARCH
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+extern __typeof (memchr) __memchr_vx attribute_hidden;
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+# define memchr __memchr_vx
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+
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+extern __typeof (memcmp) __memcmp_z196 attribute_hidden;
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+# define memcmp __memcmp_z196
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+# endif
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+
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+# include <string/memmem.c>
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+#endif
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diff --git a/sysdeps/s390/memmem.c b/sysdeps/s390/memmem.c
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new file mode 100644
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index 0000000000000000..8c50b3f403eb8d1f
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--- /dev/null
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+++ b/sysdeps/s390/memmem.c
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@@ -0,0 +1,43 @@
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+/* Multiple versions of memmem.
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+ Copyright (C) 2018 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 <ifunc-memmem.h>
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+
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+#if HAVE_MEMMEM_IFUNC
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+# define memmem __redirect_memmem
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+# define __memmem __redirect___memmem
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+# include <string.h>
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+# include <ifunc-resolve.h>
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+# undef memmem
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+# undef __memmem
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+
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+# if HAVE_MEMMEM_C
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+extern __typeof (__redirect_memmem) MEMMEM_C attribute_hidden;
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+# endif
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+
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+# if HAVE_MEMMEM_Z13
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+extern __typeof (__redirect_memmem) MEMMEM_Z13 attribute_hidden;
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+# endif
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+
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+s390_libc_ifunc_expr (__redirect_memmem, __memmem,
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+ (HAVE_MEMMEM_Z13 && (hwcap & HWCAP_S390_VX))
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+ ? MEMMEM_Z13
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+ : MEMMEM_DEFAULT
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+ )
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+weak_alias (__memmem, memmem)
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+#endif
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diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c
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index 14727f8fef5431dd..da8696d917abf51c 100644
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--- a/sysdeps/s390/multiarch/ifunc-impl-list.c
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+++ b/sysdeps/s390/multiarch/ifunc-impl-list.c
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@@ -25,6 +25,7 @@
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#include <ifunc-memcmp.h>
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#include <ifunc-memcpy.h>
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#include <ifunc-strstr.h>
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+#include <ifunc-memmem.h>
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/* Maximum number of IFUNC implementations. */
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#define MAX_IFUNC 3
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@@ -151,6 +152,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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)
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#endif /* HAVE_STRSTR_IFUNC */
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+#if HAVE_MEMMEM_IFUNC
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+ IFUNC_IMPL (i, name, memmem,
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+# if HAVE_MEMMEM_Z13
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+ IFUNC_IMPL_ADD (array, i, memmem,
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+ dl_hwcap & HWCAP_S390_VX, MEMMEM_Z13)
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+# endif
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+# if HAVE_MEMMEM_C
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+ IFUNC_IMPL_ADD (array, i, memmem, 1, MEMMEM_C)
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+# endif
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+ )
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+#endif /* HAVE_MEMMEM_IFUNC */
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+
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#ifdef HAVE_S390_VX_ASM_SUPPORT
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# define IFUNC_VX_IMPL(FUNC) \
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