@@ -75,5 +75,6 @@ sysdep_routines += bzero memset memset-z900 \
strrchr strrchr-vx strrchr-c \
strspn strspn-vx strspn-c \
strpbrk strpbrk-vx strpbrk-c \
- strcspn strcspn-vx strcspn-c
+ strcspn strcspn-vx strcspn-c \
+ memchr memchr-vx memchr-z900
endif
new file mode 100644
@@ -0,0 +1,52 @@
+/* memchr 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_MEMCHR_IFUNC 1
+#else
+# define HAVE_MEMCHR_IFUNC 0
+#endif
+
+#ifdef HAVE_S390_VX_ASM_SUPPORT
+# define HAVE_MEMCHR_IFUNC_AND_VX_SUPPORT HAVE_MEMCHR_IFUNC
+#else
+# define HAVE_MEMCHR_IFUNC_AND_VX_SUPPORT 0
+#endif
+
+#if defined HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT
+# define MEMCHR_DEFAULT MEMCHR_Z13
+# define HAVE_MEMCHR_Z900_G5 0
+# define HAVE_MEMCHR_Z13 1
+#else
+# define MEMCHR_DEFAULT MEMCHR_Z900_G5
+# define HAVE_MEMCHR_Z900_G5 1
+# define HAVE_MEMCHR_Z13 HAVE_MEMCHR_IFUNC_AND_VX_SUPPORT
+#endif
+
+#if HAVE_MEMCHR_Z900_G5
+# define MEMCHR_Z900_G5 __memchr_default
+#else
+# define MEMCHR_Z900_G5 NULL
+#endif
+
+#if HAVE_MEMCHR_Z13
+# define MEMCHR_Z13 __memchr_vx
+#else
+# define MEMCHR_Z13 NULL
+#endif
similarity index 92%
rename from sysdeps/s390/multiarch/memchr-vx.S
rename to sysdeps/s390/memchr-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-memchr.h>
+#if HAVE_MEMCHR_Z13
# include "sysdep.h"
# include "asm-syntax.h"
@@ -38,7 +39,7 @@
-v17=index of found c
-v18=c replicated
*/
-ENTRY(__memchr_vx)
+ENTRY(MEMCHR_Z13)
.machine "z13"
.machinemode "zarch_nohighgprs"
@@ -149,11 +150,14 @@ ENTRY(__memchr_vx)
clgrjl %r0,%r4,.Lloop64
j .Llt64
-END(__memchr_vx)
+END(MEMCHR_Z13)
-# define memchr __memchr_c
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(name) strong_alias(__memchr_c, __GI_memchr)
-#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
+# if ! HAVE_MEMCHR_IFUNC
+strong_alias (MEMCHR_Z13, __memchr)
+weak_alias (__memchr, memchr)
+# endif
-#include <memchr.S>
+# if ! HAVE_MEMCHR_Z900_G5 && defined SHARED && IS_IN (libc)
+strong_alias (MEMCHR_Z13, __GI_memchr)
+# endif
+#endif
similarity index 63%
rename from sysdeps/s390/s390-64/memchr.S
rename to sysdeps/s390/memchr-z900.S
@@ -1,4 +1,4 @@
-/* Search a character in a block of memory. 64 bit S/390 version.
+/* Search a character in a block of memory. 31/64 bit S/390 version.
Copyright (C) 2001-2018 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
@@ -22,19 +22,42 @@
%r3 = character to find
%r4 = number of bytes to search. */
+#include <ifunc-memchr.h>
#include "sysdep.h"
#include "asm-syntax.h"
+#if HAVE_MEMCHR_Z900_G5
+# if defined __s390x__
+# define SLGR slgr
+# define LGHI lghi
+# define NGR ngr
+# define LGR lgr
+# else
+# define SLGR slr
+# define LGHI lhi
+# define NGR nr
+# define LGR lr
+# endif /* ! defined __s390x__ */
+
.text
-ENTRY(memchr)
- lghi %r0,0xff
- ngr %r0,%r3
- lgr %r1,%r2
+ENTRY(MEMCHR_Z900_G5)
+ LGHI %r0,0xff
+ NGR %r0,%r3
+ LGR %r1,%r2
la %r2,0(%r4,%r1)
0: srst %r2,%r1
jo 0b
brc 13,1f
- slgr %r2,%r2
+ SLGR %r2,%r2
1: br %r14
-END(memchr)
-libc_hidden_builtin_def (memchr)
+END(MEMCHR_Z900_G5)
+
+# if ! HAVE_MEMCHR_IFUNC
+strong_alias (MEMCHR_Z900_G5, __memchr)
+weak_alias (__memchr, memchr)
+# endif
+
+# if defined SHARED && IS_IN (libc)
+strong_alias (MEMCHR_Z900_G5, __GI_memchr)
+# endif
+#endif
similarity index 68%
rename from sysdeps/s390/multiarch/memchr.c
rename to sysdeps/s390/memchr.c
@@ -16,12 +16,26 @@
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-memchr.h>
+
+#if HAVE_MEMCHR_IFUNC
# define memchr __redirect_memchr
# include <string.h>
# undef memchr
# include <ifunc-resolve.h>
-s390_vx_libc_ifunc2_redirected (__redirect_memchr, __memchr, memchr)
+# if HAVE_MEMCHR_Z900_G5
+extern __typeof (__redirect_memchr) MEMCHR_Z900_G5 attribute_hidden;
+# endif
+
+# if HAVE_MEMCHR_Z13
+extern __typeof (__redirect_memchr) MEMCHR_Z13 attribute_hidden;
+# endif
+s390_libc_ifunc_expr (__redirect_memchr, __memchr,
+ (HAVE_MEMCHR_Z13 && (hwcap & HWCAP_S390_VX))
+ ? MEMCHR_Z13
+ : MEMCHR_DEFAULT
+ )
+weak_alias (__memchr, memchr)
#endif
@@ -1,6 +1,5 @@
ifeq ($(subdir),string)
-sysdep_routines += memchr memchr-vx \
- rawmemchr rawmemchr-vx rawmemchr-c \
+sysdep_routines += rawmemchr rawmemchr-vx rawmemchr-c \
memccpy memccpy-vx memccpy-c \
memrchr memrchr-vx memrchr-c
endif
@@ -42,6 +42,7 @@
#include <ifunc-strspn.h>
#include <ifunc-strpbrk.h>
#include <ifunc-strcspn.h>
+#include <ifunc-memchr.h>
/* Maximum number of IFUNC implementations. */
#define MAX_IFUNC 3
@@ -372,6 +373,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
)
#endif /* HAVE_STRCSPN_IFUNC */
+#if HAVE_MEMCHR_IFUNC
+ IFUNC_IMPL (i, name, memchr,
+# if HAVE_MEMCHR_Z13
+ IFUNC_IMPL_ADD (array, i, memchr,
+ dl_hwcap & HWCAP_S390_VX, MEMCHR_Z13)
+# endif
+# if HAVE_MEMCHR_Z900_G5
+ IFUNC_IMPL_ADD (array, i, memchr, 1, MEMCHR_Z900_G5)
+# endif
+ )
+#endif /* HAVE_MEMCHR_IFUNC */
+
#ifdef HAVE_S390_VX_ASM_SUPPORT
# define IFUNC_VX_IMPL(FUNC) \
@@ -412,7 +425,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_VX_IMPL (wcscspn);
- IFUNC_VX_IMPL (memchr);
IFUNC_VX_IMPL (wmemchr);
IFUNC_VX_IMPL (rawmemchr);
deleted file mode 100644
@@ -1,41 +0,0 @@
-/* Search a character in a block of memory. For IBM S390
- Copyright (C) 2000-2018 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
-
- 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/>. */
-
-/*
- * R2 = address to memory area
- * R3 = character to find
- * R4 = number of bytes to search
- */
-
-#include "sysdep.h"
-#include "asm-syntax.h"
-
- .text
-ENTRY(memchr)
- lhi %r0,0xff
- nr %r0,%r3
- lr %r1,%r2
- la %r2,0(%r4,%r1)
-0: srst %r2,%r1
- jo 0b
- brc 13,1f
- slr %r2,%r2
-1: br %r14
-END(memchr)
-libc_hidden_builtin_def (memchr)
deleted file mode 100644
@@ -1,21 +0,0 @@
-/* Multiple versions of memchr.
- Copyright (C) 2015-2018 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/>. */
-
-/* This wrapper-file is needed, because otherwise file
- sysdeps/s390/s390-[32|64]/memchr.S will be used. */
-#include <sysdeps/s390/multiarch/memchr.c>
deleted file mode 100644
@@ -1,21 +0,0 @@
-/* Multiple versions of memchr.
- Copyright (C) 2015-2018 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/>. */
-
-/* This wrapper-file is needed, because otherwise file
- sysdeps/s390/s390-[32|64]/memchr.S will be used. */
-#include <sysdeps/s390/multiarch/memchr.c>
The ifunc handling for memchr is adjusted in order to omit ifunc variants if those will never be used as the minimum architecture level already supports newer CPUs by default. Glibc internal calls will then also use the "newer" ifunc variant. Note: The fallback s390-32/s390-64 ifunc variants with srst instruction are now moved to the unified memchr-z900.S file which can be used for 31/64bit. The s390-32/s390-64 files multiarch/memchr.c and memchr.S are deleted. ChangeLog: * sysdeps/s390/multiarch/Makefile (sysdep_routines): Remove memchr variants. * sysdeps/s390/Makefile (sysdep_routines): Add memchr variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Refactor ifunc handling for memchr. * sysdeps/s390/multiarch/memchr-vx.S: Move to ... * sysdeps/s390/memchr-vx.S: ... here and adjust ifunc handling. * sysdeps/s390/multiarch/memchr.c: Move to ... * sysdeps/s390/memchr.c: ... here and adjust ifunc handling. * sysdeps/s390/ifunc-memchr.h: New file. * sysdeps/s390/s390-64/memchr.S: Move to ... * sysdeps/s390/memchr-z900.S: ... here and adjust to be usable for 31/64bit and ifunc handling. * sysdeps/s390/s390-32/multiarch/memchr.c: Delete file. * sysdeps/s390/s390-64/multiarch/memchr.c: Likewise. * sysdeps/s390/s390-32/memchr.S: Likewise. --- sysdeps/s390/Makefile | 3 +- sysdeps/s390/ifunc-memchr.h | 52 +++++++++++++++++++ sysdeps/s390/{multiarch => }/memchr-vx.S | 20 ++++--- .../s390/{s390-64/memchr.S => memchr-z900.S} | 39 +++++++++++--- sysdeps/s390/{multiarch => }/memchr.c | 18 ++++++- sysdeps/s390/multiarch/Makefile | 3 +- sysdeps/s390/multiarch/ifunc-impl-list.c | 14 ++++- sysdeps/s390/s390-32/memchr.S | 41 --------------- sysdeps/s390/s390-32/multiarch/memchr.c | 21 -------- sysdeps/s390/s390-64/multiarch/memchr.c | 21 -------- 10 files changed, 127 insertions(+), 105 deletions(-) create mode 100644 sysdeps/s390/ifunc-memchr.h rename sysdeps/s390/{multiarch => }/memchr-vx.S (92%) rename sysdeps/s390/{s390-64/memchr.S => memchr-z900.S} (63%) rename sysdeps/s390/{multiarch => }/memchr.c (68%) delete mode 100644 sysdeps/s390/s390-32/memchr.S delete mode 100644 sysdeps/s390/s390-32/multiarch/memchr.c delete mode 100644 sysdeps/s390/s390-64/multiarch/memchr.c