+2018-12-18 Stefan Liebler <stli@linux.ibm.com>
+
+ * sysdeps/s390/multiarch/Makefile
+ (sysdep_routines): Remove strnlen variants.
+ * sysdeps/s390/Makefile (sysdep_routines): Add strnlen variants.
+ * sysdeps/s390/multiarch/ifunc-impl-list.c
+ (__libc_ifunc_impl_list): Refactor ifunc handling for strnlen.
+ * sysdeps/s390/multiarch/strnlen-c.c: Move to ...
+ * sysdeps/s390/strnlen-c.c: ... here and adjust ifunc handling.
+ * sysdeps/s390/multiarch/strnlen-vx.S: Move to ...
+ * sysdeps/s390/strnlen-vx.S: ... here and adjust ifunc handling.
+ * sysdeps/s390/multiarch/strnlen.c: Move to ...
+ * sysdeps/s390/strnlen.c: ... here and adjust ifunc handling.
+ * sysdeps/s390/ifunc-strnlen.h: New file.
+
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
* sysdeps/s390/multiarch/Makefile
memmove memmove-c \
strstr strstr-vx strstr-c \
memmem memmem-vx memmem-c \
- strlen strlen-vx strlen-c
+ strlen strlen-vx strlen-c \
+ strnlen strnlen-vx strnlen-c
endif
--- /dev/null
+/* strnlen 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_STRNLEN_IFUNC 1
+#else
+# define HAVE_STRNLEN_IFUNC 0
+#endif
+
+#ifdef HAVE_S390_VX_ASM_SUPPORT
+# define HAVE_STRNLEN_IFUNC_AND_VX_SUPPORT HAVE_STRNLEN_IFUNC
+#else
+# define HAVE_STRNLEN_IFUNC_AND_VX_SUPPORT 0
+#endif
+
+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
+# define STRNLEN_DEFAULT STRNLEN_Z13
+# define HAVE_STRNLEN_C 0
+# define HAVE_STRNLEN_Z13 1
+#else
+# define STRNLEN_DEFAULT STRNLEN_C
+# define HAVE_STRNLEN_C 1
+# define HAVE_STRNLEN_Z13 HAVE_STRNLEN_IFUNC_AND_VX_SUPPORT
+#endif
+
+#if HAVE_STRNLEN_C
+# define STRNLEN_C __strnlen_c
+#else
+# define STRNLEN_C NULL
+#endif
+
+#if HAVE_STRNLEN_Z13
+# define STRNLEN_Z13 __strnlen_vx
+#else
+# define STRNLEN_Z13 NULL
+#endif
ifeq ($(subdir),string)
-sysdep_routines += strnlen strnlen-vx strnlen-c \
- strcpy strcpy-vx \
+sysdep_routines += strcpy strcpy-vx \
stpcpy stpcpy-vx stpcpy-c \
strncpy strncpy-vx \
stpncpy stpncpy-vx stpncpy-c \
#include <ifunc-strstr.h>
#include <ifunc-memmem.h>
#include <ifunc-strlen.h>
+#include <ifunc-strnlen.h>
/* Maximum number of IFUNC implementations. */
#define MAX_IFUNC 3
)
#endif /* HAVE_STRLEN_IFUNC */
+#if HAVE_STRNLEN_IFUNC
+ IFUNC_IMPL (i, name, strnlen,
+# if HAVE_STRNLEN_Z13
+ IFUNC_IMPL_ADD (array, i, strnlen,
+ dl_hwcap & HWCAP_S390_VX, STRNLEN_Z13)
+# endif
+# if HAVE_STRNLEN_C
+ IFUNC_IMPL_ADD (array, i, strnlen, 1, STRNLEN_C)
+# endif
+ )
+#endif /* HAVE_STRNLEN_IFUNC */
+
#ifdef HAVE_S390_VX_ASM_SUPPORT
# define IFUNC_VX_IMPL(FUNC) \
IFUNC_VX_IMPL (wcslen);
- IFUNC_VX_IMPL (strnlen);
IFUNC_VX_IMPL (wcsnlen);
IFUNC_VX_IMPL (strcpy);
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
-# define STRNLEN __strnlen_c
-# ifdef SHARED
-# undef libc_hidden_def
-# define libc_hidden_def(name) \
+#include <ifunc-strnlen.h>
+
+#if HAVE_STRNLEN_C
+# if HAVE_STRNLEN_IFUNC
+# define STRNLEN STRNLEN_C
+# if defined SHARED && IS_IN (libc)
+# undef libc_hidden_def
+# define libc_hidden_def(name) \
__hidden_ver1 (__strnlen_c, __GI_strnlen, __strnlen_c); \
strong_alias (__strnlen_c, __strnlen_c_1); \
__hidden_ver1 (__strnlen_c_1, __GI___strnlen, __strnlen_c_1);
-# endif /* SHARED */
+# endif
+# endif
# include <string/strnlen.c>
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
+#endif
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
+#include <ifunc-strnlen.h>
+
+#if HAVE_STRNLEN_Z13
# include "sysdep.h"
# include "asm-syntax.h"
-r5=current_len and return_value
-v16=part of s
*/
-ENTRY(__strnlen_vx)
+ENTRY(STRNLEN_Z13)
.machine "z13"
.machinemode "zarch_nohighgprs"
clgrjl %r1,%r3,.Lloop64
j .Llt64
-END(__strnlen_vx)
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
+END(STRNLEN_Z13)
+
+# if ! HAVE_STRNLEN_IFUNC
+strong_alias (STRNLEN_Z13, __strnlen)
+weak_alias (__strnlen, strnlen)
+# endif
+
+# if ! HAVE_STRNLEN_C && defined SHARED && IS_IN (libc)
+strong_alias (STRNLEN_Z13, __GI_strnlen)
+strong_alias (STRNLEN_Z13, __GI___strnlen)
+# endif
+
+#endif /* HAVE_STRNLEN_Z13 */
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
+#include <ifunc-strnlen.h>
+
+#if HAVE_STRNLEN_IFUNC
# define strnlen __redirect_strnlen
# define __strnlen __redirect___strnlen
# include <string.h>
# undef __strnlen
# include <ifunc-resolve.h>
-s390_vx_libc_ifunc_redirected (__redirect___strnlen, __strnlen)
-weak_alias (__strnlen, strnlen)
+# if HAVE_STRNLEN_C
+extern __typeof (__redirect_strnlen) STRNLEN_C attribute_hidden;
+# endif
-#else
-# include <string/strnlen.c>
-#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
+# if HAVE_STRNLEN_Z13
+extern __typeof (__redirect_strnlen) STRNLEN_Z13 attribute_hidden;
+# endif
+
+s390_libc_ifunc_expr (__redirect___strnlen, __strnlen,
+ (HAVE_STRNLEN_Z13 && (hwcap & HWCAP_S390_VX))
+ ? STRNLEN_Z13
+ : STRNLEN_DEFAULT
+ )
+weak_alias (__strnlen, strnlen)
+#endif /* HAVE_STRNLEN_IFUNC */
git://sourceware.org / glibc.git / commitdiff