diff options
Diffstat (limited to 'sysdeps/s390/multiarch/ifunc-impl-list.c')
| -rw-r--r-- | sysdeps/s390/multiarch/ifunc-impl-list.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c new file mode 100644 index 0000000000..62a435983c --- /dev/null +++ b/sysdeps/s390/multiarch/ifunc-impl-list.c @@ -0,0 +1,145 @@ +/* Enumerate available IFUNC implementations of a function. s390/s390x version. + Copyright (C) 2015-2016 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); + + IFUNC_VX_IMPL (stpncpy); + IFUNC_VX_IMPL (wcpncpy); + + IFUNC_VX_IMPL (strcat); + IFUNC_VX_IMPL (wcscat); + + IFUNC_VX_IMPL (strncat); + IFUNC_VX_IMPL (wcsncat); + + IFUNC_VX_IMPL (strcmp); + IFUNC_VX_IMPL (wcscmp); + + IFUNC_VX_IMPL (strncmp); + IFUNC_VX_IMPL (wcsncmp); + + IFUNC_VX_IMPL (strchr); + IFUNC_VX_IMPL (wcschr); + + IFUNC_VX_IMPL (strchrnul); + IFUNC_VX_IMPL (wcschrnul); + + IFUNC_VX_IMPL (strrchr); + IFUNC_VX_IMPL (wcsrchr); + + IFUNC_VX_IMPL (strspn); + IFUNC_VX_IMPL (wcsspn); + + IFUNC_VX_IMPL (strpbrk); + IFUNC_VX_IMPL (wcspbrk); + + IFUNC_VX_IMPL (strcspn); + IFUNC_VX_IMPL (wcscspn); + + IFUNC_VX_IMPL (memchr); + IFUNC_VX_IMPL (wmemchr); + IFUNC_VX_IMPL (rawmemchr); + + IFUNC_VX_IMPL (memccpy); + + IFUNC_VX_IMPL (wmemset); + + IFUNC_VX_IMPL (wmemcmp); + + IFUNC_VX_IMPL (memrchr); + +#endif /* HAVE_S390_VX_ASM_SUPPORT */ + + return i; +} |