@@ -59,5 +59,6 @@ sysdep_routines += bzero memset memset-z900 \
mempcpy memcpy memcpy-z900 \
memmove memmove-c \
strstr strstr-vx strstr-c \
- memmem memmem-vx memmem-c
+ memmem memmem-vx memmem-c \
+ strlen strlen-vx strlen-c
endif
new file mode 100644
@@ -0,0 +1,52 @@
+/* strlen 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_STRLEN_IFUNC 1
+#else
+# define HAVE_STRLEN_IFUNC 0
+#endif
+
+#ifdef HAVE_S390_VX_ASM_SUPPORT
+# define HAVE_STRLEN_IFUNC_AND_VX_SUPPORT HAVE_STRLEN_IFUNC
+#else
+# define HAVE_STRLEN_IFUNC_AND_VX_SUPPORT 0
+#endif
+
+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
+# define STRLEN_DEFAULT STRLEN_Z13
+# define HAVE_STRLEN_C 0
+# define HAVE_STRLEN_Z13 1
+#else
+# define STRLEN_DEFAULT STRLEN_C
+# define HAVE_STRLEN_C 1
+# define HAVE_STRLEN_Z13 HAVE_STRLEN_IFUNC_AND_VX_SUPPORT
+#endif
+
+#if HAVE_STRLEN_C
+# define STRLEN_C __strlen_c
+#else
+# define STRLEN_C NULL
+#endif
+
+#if HAVE_STRLEN_Z13
+# define STRLEN_Z13 __strlen_vx
+#else
+# define STRLEN_Z13 NULL
+#endif
@@ -1,6 +1,5 @@
ifeq ($(subdir),string)
-sysdep_routines += strlen strlen-vx strlen-c \
- strnlen strnlen-vx strnlen-c \
+sysdep_routines += strnlen strnlen-vx strnlen-c \
strcpy strcpy-vx \
stpcpy stpcpy-vx stpcpy-c \
strncpy strncpy-vx \
@@ -26,6 +26,7 @@
#include <ifunc-memcpy.h>
#include <ifunc-strstr.h>
#include <ifunc-memmem.h>
+#include <ifunc-strlen.h>
/* Maximum number of IFUNC implementations. */
#define MAX_IFUNC 3
@@ -164,6 +165,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
)
#endif /* HAVE_MEMMEM_IFUNC */
+#if HAVE_STRLEN_IFUNC
+ IFUNC_IMPL (i, name, strlen,
+# if HAVE_STRLEN_Z13
+ IFUNC_IMPL_ADD (array, i, strlen,
+ dl_hwcap & HWCAP_S390_VX, STRLEN_Z13)
+# endif
+# if HAVE_STRLEN_C
+ IFUNC_IMPL_ADD (array, i, strlen, 1, STRLEN_C)
+# endif
+ )
+#endif /* HAVE_STRLEN_IFUNC */
+
#ifdef HAVE_S390_VX_ASM_SUPPORT
# define IFUNC_VX_IMPL(FUNC) \
@@ -172,7 +185,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__##FUNC##_vx) \
IFUNC_IMPL_ADD (array, i, FUNC, 1, __##FUNC##_c))
- IFUNC_VX_IMPL (strlen);
IFUNC_VX_IMPL (wcslen);
IFUNC_VX_IMPL (strnlen);
similarity index 78%
rename from sysdeps/s390/multiarch/strlen-c.c
rename to sysdeps/s390/strlen-c.c
@@ -16,13 +16,17 @@
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 STRLEN __strlen_c
-# ifdef SHARED
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(name) \
+#include <ifunc-strlen.h>
+
+#if HAVE_STRLEN_C
+# if HAVE_STRLEN_IFUNC
+# define STRLEN STRLEN_C
+# if defined SHARED && IS_IN (libc)
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name) \
__hidden_ver1 (__strlen_c, __GI_strlen, __strlen_c);
-# endif /* SHARED */
+# endif
+# endif
# include <string/strlen.c>
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
+#endif
similarity index 90%
rename from sysdeps/s390/multiarch/strlen-vx.S
rename to sysdeps/s390/strlen-vx.S
@@ -16,7 +16,8 @@
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-strlen.h>
+#if HAVE_STRLEN_Z13
# include "sysdep.h"
# include "asm-syntax.h"
@@ -34,7 +35,7 @@
-r5=current_len and return_value
-v16=part of s
*/
-ENTRY(__strlen_vx)
+ENTRY(STRLEN_Z13)
.machine "z13"
.machinemode "zarch_nohighgprs"
@@ -80,5 +81,13 @@ ENTRY(__strlen_vx)
vlgvb %r2,%v16,7 /* Load byte index of zero. */
algr %r2,%r5
br %r14
-END(__strlen_vx)
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
+END(STRLEN_Z13)
+
+# if ! HAVE_STRLEN_IFUNC
+strong_alias (STRLEN_Z13, strlen)
+# endif
+
+# if ! HAVE_STRLEN_C && defined SHARED && IS_IN (libc)
+strong_alias (STRLEN_Z13, __GI_strlen)
+# endif
+#endif
similarity index 69%
rename from sysdeps/s390/multiarch/strlen.c
rename to sysdeps/s390/strlen.c
@@ -16,14 +16,25 @@
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-strlen.h>
+
+#if HAVE_STRLEN_IFUNC
# define strlen __redirect_strlen
# include <string.h>
# include <ifunc-resolve.h>
# undef strlen
-s390_vx_libc_ifunc2_redirected (__redirect_strlen, __strlen, strlen)
+# if HAVE_STRLEN_C
+extern __typeof (__redirect_strlen) STRLEN_C attribute_hidden;
+# endif
+
+# if HAVE_STRLEN_Z13
+extern __typeof (__redirect_strlen) STRLEN_Z13 attribute_hidden;
+# endif
-#else
-# include <string/strlen.c>
-#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
+s390_libc_ifunc_expr (__redirect_strlen, strlen,
+ (HAVE_STRLEN_Z13 && (hwcap & HWCAP_S390_VX))
+ ? STRLEN_Z13
+ : STRLEN_DEFAULT
+ )
+#endif