b3a0c176d1
This patch provides optimized versions of stpncpy and wcpncpy with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/stpncpy-c.c: New File. * sysdeps/s390/multiarch/stpncpy-vx.S: Likewise. * sysdeps/s390/multiarch/stpncpy.c: Likewise. * sysdeps/s390/multiarch/wcpncpy-c.c: Likewise. * sysdeps/s390/multiarch/wcpncpy-vx.S: Likewise. * sysdeps/s390/multiarch/wcpncpy.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add stpncpy and wcpncpy functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for stpncpy, wcpncpy. * wcsmbs/wcpncpy.c: Use WCPNCPY if defined. * string/test-stpncpy.c: Add wcpncpy support. * wcsmbs/test-wcpncpy.c: New File. * wcsmbs/Makefile (strop-tests): Add wcpncpy. * benchtests/bench-stpncpy.c: Add wcpncpy support. * benchtests/bench-wcpncpy.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcpncpy.
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/* Enumerate available IFUNC implementations of a function. s390/s390x version.
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Copyright (C) 2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <string.h>
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#include <wchar.h>
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#include <ifunc-impl-list.h>
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#include <ifunc-resolve.h>
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/* Maximum number of IFUNC implementations. */
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#define MAX_IFUNC 3
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/* Fill ARRAY of MAX elements with IFUNC implementations for function
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NAME supported on target machine and return the number of valid
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entries. */
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size_t
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__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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size_t max)
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{
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assert (max >= MAX_IFUNC);
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size_t i = 0;
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/* Get hardware information. */
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unsigned long int dl_hwcap = GLRO (dl_hwcap);
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unsigned long long stfle_bits = 0ULL;
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if ((dl_hwcap & HWCAP_S390_STFLE)
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&& (dl_hwcap & HWCAP_S390_ZARCH)
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&& (dl_hwcap & HWCAP_S390_HIGH_GPRS))
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{
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S390_STORE_STFLE (stfle_bits);
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}
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IFUNC_IMPL (i, name, memset,
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IFUNC_IMPL_ADD (array, i, memset,
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S390_IS_Z196 (stfle_bits), __memset_z196)
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IFUNC_IMPL_ADD (array, i, memset,
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S390_IS_Z10 (stfle_bits), __memset_z10)
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IFUNC_IMPL_ADD (array, i, memset, 1, __memset_default))
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IFUNC_IMPL (i, name, memcmp,
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IFUNC_IMPL_ADD (array, i, memcmp,
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S390_IS_Z196 (stfle_bits), __memcmp_z196)
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IFUNC_IMPL_ADD (array, i, memcmp,
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S390_IS_Z10 (stfle_bits), __memcmp_z10)
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IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_default))
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#ifdef SHARED
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IFUNC_IMPL (i, name, memcpy,
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IFUNC_IMPL_ADD (array, i, memcpy,
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S390_IS_Z196 (stfle_bits), __memcpy_z196)
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IFUNC_IMPL_ADD (array, i, memcpy,
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S390_IS_Z10 (stfle_bits), __memcpy_z10)
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IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_default))
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#endif /* SHARED */
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#ifdef HAVE_S390_VX_ASM_SUPPORT
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# define IFUNC_VX_IMPL(FUNC) \
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IFUNC_IMPL (i, name, FUNC, \
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IFUNC_IMPL_ADD (array, i, FUNC, dl_hwcap & HWCAP_S390_VX, \
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__##FUNC##_vx) \
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IFUNC_IMPL_ADD (array, i, FUNC, 1, __##FUNC##_c))
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IFUNC_VX_IMPL (strlen);
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IFUNC_VX_IMPL (wcslen);
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IFUNC_VX_IMPL (strnlen);
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IFUNC_VX_IMPL (wcsnlen);
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IFUNC_VX_IMPL (strcpy);
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IFUNC_VX_IMPL (wcscpy);
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IFUNC_VX_IMPL (stpcpy);
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IFUNC_VX_IMPL (wcpcpy);
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IFUNC_VX_IMPL (strncpy);
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IFUNC_VX_IMPL (wcsncpy);
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IFUNC_VX_IMPL (stpncpy);
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IFUNC_VX_IMPL (wcpncpy);
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#endif /* HAVE_S390_VX_ASM_SUPPORT */
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return i;
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}
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