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glibc/SOURCES/glibc-rh1659438-15.patch

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