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07be392807
This patch removes the bzero s390 implementation with mvcle and adds entry points for bzero in memset ifunc variants. Therefore an ifunc resolver is implemented for bzero, too. ChangeLog: * sysdeps/s390/s390-32/bzero.S: Delete file. * sysdeps/s390/s390-64/bzero.S: Likewise. * sysdeps/s390/Makefile (sysdep_routines): Add bzero. * sysdeps/s390/bzero.c: New file. * sysdeps/s390/memset-z900.S: Add bzero entry points. * sysdeps/s390/ifunc-memset.h: Add bzero function macros. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add bzero ifunc variants.
178 lines
4.6 KiB
C
178 lines
4.6 KiB
C
/* Enumerate available IFUNC implementations of a function. s390/s390x version.
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Copyright (C) 2015-2018 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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#include <ifunc-memset.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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#if HAVE_MEMSET_IFUNC
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IFUNC_IMPL (i, name, memset,
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# if HAVE_MEMSET_Z196
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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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# endif
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# if HAVE_MEMSET_Z10
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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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# endif
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# if HAVE_MEMSET_Z900_G5
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IFUNC_IMPL_ADD (array, i, memset, 1, MEMSET_Z900_G5)
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# endif
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)
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/* Note: bzero is implemented in memset. */
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IFUNC_IMPL (i, name, bzero,
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# if HAVE_MEMSET_Z196
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IFUNC_IMPL_ADD (array, i, bzero,
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S390_IS_Z196 (stfle_bits), BZERO_Z196)
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# endif
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# if HAVE_MEMSET_Z10
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IFUNC_IMPL_ADD (array, i, bzero,
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S390_IS_Z10 (stfle_bits), BZERO_Z10)
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# endif
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# if HAVE_MEMSET_Z900_G5
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IFUNC_IMPL_ADD (array, i, bzero, 1, BZERO_Z900_G5)
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# endif
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)
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#endif /* HAVE_MEMSET_IFUNC */
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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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IFUNC_IMPL (i, name, mempcpy,
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IFUNC_IMPL_ADD (array, i, mempcpy,
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S390_IS_Z196 (stfle_bits), ____mempcpy_z196)
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IFUNC_IMPL_ADD (array, i, mempcpy,
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S390_IS_Z10 (stfle_bits), ____mempcpy_z10)
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IFUNC_IMPL_ADD (array, i, mempcpy, 1, ____mempcpy_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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IFUNC_VX_IMPL (strcat);
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IFUNC_VX_IMPL (wcscat);
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IFUNC_VX_IMPL (strncat);
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IFUNC_VX_IMPL (wcsncat);
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IFUNC_VX_IMPL (strcmp);
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IFUNC_VX_IMPL (wcscmp);
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IFUNC_VX_IMPL (strncmp);
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IFUNC_VX_IMPL (wcsncmp);
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IFUNC_VX_IMPL (strchr);
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IFUNC_VX_IMPL (wcschr);
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IFUNC_VX_IMPL (strchrnul);
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IFUNC_VX_IMPL (wcschrnul);
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IFUNC_VX_IMPL (strrchr);
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IFUNC_VX_IMPL (wcsrchr);
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IFUNC_VX_IMPL (strspn);
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IFUNC_VX_IMPL (wcsspn);
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IFUNC_VX_IMPL (strpbrk);
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IFUNC_VX_IMPL (wcspbrk);
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IFUNC_VX_IMPL (strcspn);
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IFUNC_VX_IMPL (wcscspn);
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IFUNC_VX_IMPL (memchr);
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IFUNC_VX_IMPL (wmemchr);
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IFUNC_VX_IMPL (rawmemchr);
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IFUNC_VX_IMPL (memccpy);
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IFUNC_VX_IMPL (wmemset);
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IFUNC_VX_IMPL (wmemcmp);
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IFUNC_VX_IMPL (memrchr);
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#endif /* HAVE_S390_VX_ASM_SUPPORT */
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return i;
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}
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