mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 09:30:06 +00:00
d183b96ee6
This patch provides optimized versions of strncpy and wcsncpy with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strncpy-vx.S: New File. * sysdeps/s390/multiarch/strncpy.c: Likewise. * sysdeps/s390/multiarch/wcsncpy-c.c: Likewise. * sysdeps/s390/multiarch/wcsncpy-vx.S: Likewise. * sysdeps/s390/multiarch/wcsncpy.c: Likewise. * sysdeps/s390/s390-32/multiarch/strncpy.c: Likewise. * sysdeps/s390/s390-64/multiarch/strncpy.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strncpy and wcsncpy functions. * wcsmbs/wcsncpy.c: Use WCSNCPY if defined. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strncpy, wcsncpy. * string/test-strncpy.c: Add wcsncpy support. * wcsmbs/test-wcsncpy.c: New File. * wcsmbs/Makefile (strop-tests): Add wcsncpy. * benchtests/bench-strncpy.c: Add wcsncpy support. * benchtests/bench-wcsncpy.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcsncpy
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* Enumerate available IFUNC implementations of a function. s390/s390x version.
|
|
Copyright (C) 2015 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 <assert.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#include <ifunc-impl-list.h>
|
|
#include <ifunc-resolve.h>
|
|
|
|
/* Maximum number of IFUNC implementations. */
|
|
#define MAX_IFUNC 3
|
|
|
|
/* Fill ARRAY of MAX elements with IFUNC implementations for function
|
|
NAME supported on target machine and return the number of valid
|
|
entries. */
|
|
size_t
|
|
__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
|
size_t max)
|
|
{
|
|
assert (max >= MAX_IFUNC);
|
|
|
|
size_t i = 0;
|
|
|
|
/* Get hardware information. */
|
|
unsigned long int dl_hwcap = GLRO (dl_hwcap);
|
|
unsigned long long stfle_bits = 0ULL;
|
|
if ((dl_hwcap & HWCAP_S390_STFLE)
|
|
&& (dl_hwcap & HWCAP_S390_ZARCH)
|
|
&& (dl_hwcap & HWCAP_S390_HIGH_GPRS))
|
|
{
|
|
S390_STORE_STFLE (stfle_bits);
|
|
}
|
|
|
|
IFUNC_IMPL (i, name, memset,
|
|
IFUNC_IMPL_ADD (array, i, memset,
|
|
S390_IS_Z196 (stfle_bits), __memset_z196)
|
|
IFUNC_IMPL_ADD (array, i, memset,
|
|
S390_IS_Z10 (stfle_bits), __memset_z10)
|
|
IFUNC_IMPL_ADD (array, i, memset, 1, __memset_default))
|
|
|
|
IFUNC_IMPL (i, name, memcmp,
|
|
IFUNC_IMPL_ADD (array, i, memcmp,
|
|
S390_IS_Z196 (stfle_bits), __memcmp_z196)
|
|
IFUNC_IMPL_ADD (array, i, memcmp,
|
|
S390_IS_Z10 (stfle_bits), __memcmp_z10)
|
|
IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_default))
|
|
|
|
#ifdef SHARED
|
|
|
|
IFUNC_IMPL (i, name, memcpy,
|
|
IFUNC_IMPL_ADD (array, i, memcpy,
|
|
S390_IS_Z196 (stfle_bits), __memcpy_z196)
|
|
IFUNC_IMPL_ADD (array, i, memcpy,
|
|
S390_IS_Z10 (stfle_bits), __memcpy_z10)
|
|
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_default))
|
|
|
|
#endif /* SHARED */
|
|
|
|
#ifdef HAVE_S390_VX_ASM_SUPPORT
|
|
|
|
# define IFUNC_VX_IMPL(FUNC) \
|
|
IFUNC_IMPL (i, name, FUNC, \
|
|
IFUNC_IMPL_ADD (array, i, FUNC, dl_hwcap & HWCAP_S390_VX, \
|
|
__##FUNC##_vx) \
|
|
IFUNC_IMPL_ADD (array, i, FUNC, 1, __##FUNC##_c))
|
|
|
|
IFUNC_VX_IMPL (strlen);
|
|
IFUNC_VX_IMPL (wcslen);
|
|
|
|
IFUNC_VX_IMPL (strnlen);
|
|
IFUNC_VX_IMPL (wcsnlen);
|
|
|
|
IFUNC_VX_IMPL (strcpy);
|
|
IFUNC_VX_IMPL (wcscpy);
|
|
|
|
IFUNC_VX_IMPL (stpcpy);
|
|
IFUNC_VX_IMPL (wcpcpy);
|
|
|
|
IFUNC_VX_IMPL (strncpy);
|
|
IFUNC_VX_IMPL (wcsncpy);
|
|
|
|
#endif /* HAVE_S390_VX_ASM_SUPPORT */
|
|
|
|
return i;
|
|
}
|