/* Enumerate available IFUNC implementations of a function. x86-64 version. Copyright (C) 2012-2016 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 . */ #include #include #include #include #include #include "init-arch.h" /* Maximum number of IFUNC implementations. */ #define MAX_IFUNC 5 /* 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; /* Support sysdeps/x86_64/multiarch/memcmp.S. */ IFUNC_IMPL (i, name, memcmp, IFUNC_IMPL_ADD (array, i, memcmp, HAS_CPU_FEATURE (SSE4_1), __memcmp_sse4_1) IFUNC_IMPL_ADD (array, i, memcmp, HAS_CPU_FEATURE (SSSE3), __memcmp_ssse3) IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_sse2)) /* Support sysdeps/x86_64/multiarch/memmove_chk.c. */ IFUNC_IMPL (i, name, __memmove_chk, #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_chk_avx512_unaligned_2) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_chk_avx512_unaligned_erms) #endif IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_ARCH_FEATURE (AVX_Usable), __memmove_chk_avx_unaligned) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_ARCH_FEATURE (AVX_Usable), __memmove_chk_avx_unaligned_2) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_ARCH_FEATURE (AVX_Usable), __memmove_chk_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_CPU_FEATURE (SSSE3), __memmove_chk_ssse3_back) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_CPU_FEATURE (SSSE3), __memmove_chk_ssse3) IFUNC_IMPL_ADD (array, i, __memmove_chk, 1, __memmove_chk_sse2_unaligned_2) IFUNC_IMPL_ADD (array, i, __memmove_chk, 1, __memmove_chk_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memmove_chk, 1, __memmove_chk_sse2)) /* Support sysdeps/x86_64/multiarch/memmove.S. */ IFUNC_IMPL (i, name, memmove, IFUNC_IMPL_ADD (array, i, memmove, HAS_ARCH_FEATURE (AVX_Usable), __memmove_avx_unaligned) IFUNC_IMPL_ADD (array, i, memmove, HAS_ARCH_FEATURE (AVX_Usable), __memmove_avx_unaligned_2) IFUNC_IMPL_ADD (array, i, memmove, HAS_ARCH_FEATURE (AVX_Usable), __memmove_avx_unaligned_erms) #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, memmove, HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, memmove, HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_avx512_unaligned_2) IFUNC_IMPL_ADD (array, i, memmove, HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_avx512_unaligned_erms) #endif IFUNC_IMPL_ADD (array, i, memmove, HAS_CPU_FEATURE (SSSE3), __memmove_ssse3_back) IFUNC_IMPL_ADD (array, i, memmove, HAS_CPU_FEATURE (SSSE3), __memmove_ssse3) IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_erms) IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_sse2_unaligned_2) IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_sse2)) /* Support sysdeps/x86_64/multiarch/memset_chk.S. */ IFUNC_IMPL (i, name, __memset_chk, IFUNC_IMPL_ADD (array, i, __memset_chk, 1, __memset_chk_sse2_unaligned) IFUNC_IMPL_ADD (array, i, __memset_chk, 1, __memset_chk_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memset_chk, HAS_ARCH_FEATURE (AVX2_Usable), __memset_chk_avx2_unaligned) IFUNC_IMPL_ADD (array, i, __memset_chk, HAS_ARCH_FEATURE (AVX2_Usable), __memset_chk_avx2_unaligned_erms) #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, __memset_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memset_chk_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memset_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memset_chk_avx512_unaligned) IFUNC_IMPL_ADD (array, i, __memset_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memset_chk_avx512_no_vzeroupper) #endif ) /* Support sysdeps/x86_64/multiarch/memset.S. */ IFUNC_IMPL (i, name, memset, IFUNC_IMPL_ADD (array, i, memset, 1, __memset_sse2_unaligned) IFUNC_IMPL_ADD (array, i, memset, 1, __memset_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, memset, 1, __memset_erms) IFUNC_IMPL_ADD (array, i, memset, HAS_ARCH_FEATURE (AVX2_Usable), __memset_avx2_unaligned) IFUNC_IMPL_ADD (array, i, memset, HAS_ARCH_FEATURE (AVX2_Usable), __memset_avx2_unaligned_erms) #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, memset, HAS_ARCH_FEATURE (AVX512F_Usable), __memset_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, memset, HAS_ARCH_FEATURE (AVX512F_Usable), __memset_avx512_unaligned) IFUNC_IMPL_ADD (array, i, memset, HAS_ARCH_FEATURE (AVX512F_Usable), __memset_avx512_no_vzeroupper) #endif ) /* Support sysdeps/x86_64/multiarch/stpncpy.S. */ IFUNC_IMPL (i, name, stpncpy, IFUNC_IMPL_ADD (array, i, stpncpy, HAS_CPU_FEATURE (SSSE3), __stpncpy_ssse3) IFUNC_IMPL_ADD (array, i, stpncpy, 1, __stpncpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, stpncpy, 1, __stpncpy_sse2)) /* Support sysdeps/x86_64/multiarch/stpcpy.S. */ IFUNC_IMPL (i, name, stpcpy, IFUNC_IMPL_ADD (array, i, stpcpy, HAS_CPU_FEATURE (SSSE3), __stpcpy_ssse3) IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_sse2)) /* Support sysdeps/x86_64/multiarch/strcasecmp_l.S. */ IFUNC_IMPL (i, name, strcasecmp, IFUNC_IMPL_ADD (array, i, strcasecmp, HAS_ARCH_FEATURE (AVX_Usable), __strcasecmp_avx) IFUNC_IMPL_ADD (array, i, strcasecmp, HAS_CPU_FEATURE (SSE4_2), __strcasecmp_sse42) IFUNC_IMPL_ADD (array, i, strcasecmp, HAS_CPU_FEATURE (SSSE3), __strcasecmp_ssse3) IFUNC_IMPL_ADD (array, i, strcasecmp, 1, __strcasecmp_sse2)) /* Support sysdeps/x86_64/multiarch/strcasecmp_l.S. */ IFUNC_IMPL (i, name, strcasecmp_l, IFUNC_IMPL_ADD (array, i, strcasecmp_l, HAS_ARCH_FEATURE (AVX_Usable), __strcasecmp_l_avx) IFUNC_IMPL_ADD (array, i, strcasecmp_l, HAS_CPU_FEATURE (SSE4_2), __strcasecmp_l_sse42) IFUNC_IMPL_ADD (array, i, strcasecmp_l, HAS_CPU_FEATURE (SSSE3), __strcasecmp_l_ssse3) IFUNC_IMPL_ADD (array, i, strcasecmp_l, 1, __strcasecmp_l_sse2)) /* Support sysdeps/x86_64/multiarch/strcat.S. */ IFUNC_IMPL (i, name, strcat, IFUNC_IMPL_ADD (array, i, strcat, HAS_CPU_FEATURE (SSSE3), __strcat_ssse3) IFUNC_IMPL_ADD (array, i, strcat, 1, __strcat_sse2_unaligned) IFUNC_IMPL_ADD (array, i, strcat, 1, __strcat_sse2)) /* Support sysdeps/x86_64/multiarch/strchr.S. */ IFUNC_IMPL (i, name, strchr, IFUNC_IMPL_ADD (array, i, strchr, 1, __strchr_sse2_no_bsf) IFUNC_IMPL_ADD (array, i, strchr, 1, __strchr_sse2)) /* Support sysdeps/x86_64/multiarch/strcmp.S. */ IFUNC_IMPL (i, name, strcmp, IFUNC_IMPL_ADD (array, i, strcmp, HAS_CPU_FEATURE (SSE4_2), __strcmp_sse42) IFUNC_IMPL_ADD (array, i, strcmp, HAS_CPU_FEATURE (SSSE3), __strcmp_ssse3) IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_sse2_unaligned) IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_sse2)) /* Support sysdeps/x86_64/multiarch/strcpy.S. */ IFUNC_IMPL (i, name, strcpy, IFUNC_IMPL_ADD (array, i, strcpy, HAS_CPU_FEATURE (SSSE3), __strcpy_ssse3) IFUNC_IMPL_ADD (array, i, strcpy, 1, __strcpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, strcpy, 1, __strcpy_sse2)) /* Support sysdeps/x86_64/multiarch/strcspn.S. */ IFUNC_IMPL (i, name, strcspn, IFUNC_IMPL_ADD (array, i, strcspn, HAS_CPU_FEATURE (SSE4_2), __strcspn_sse42) IFUNC_IMPL_ADD (array, i, strcspn, 1, __strcspn_sse2)) /* Support sysdeps/x86_64/multiarch/strncase_l.S. */ IFUNC_IMPL (i, name, strncasecmp, IFUNC_IMPL_ADD (array, i, strncasecmp, HAS_ARCH_FEATURE (AVX_Usable), __strncasecmp_avx) IFUNC_IMPL_ADD (array, i, strncasecmp, HAS_CPU_FEATURE (SSE4_2), __strncasecmp_sse42) IFUNC_IMPL_ADD (array, i, strncasecmp, HAS_CPU_FEATURE (SSSE3), __strncasecmp_ssse3) IFUNC_IMPL_ADD (array, i, strncasecmp, 1, __strncasecmp_sse2)) /* Support sysdeps/x86_64/multiarch/strncase_l.S. */ IFUNC_IMPL (i, name, strncasecmp_l, IFUNC_IMPL_ADD (array, i, strncasecmp_l, HAS_ARCH_FEATURE (AVX_Usable), __strncasecmp_l_avx) IFUNC_IMPL_ADD (array, i, strncasecmp_l, HAS_CPU_FEATURE (SSE4_2), __strncasecmp_l_sse42) IFUNC_IMPL_ADD (array, i, strncasecmp_l, HAS_CPU_FEATURE (SSSE3), __strncasecmp_l_ssse3) IFUNC_IMPL_ADD (array, i, strncasecmp_l, 1, __strncasecmp_l_sse2)) /* Support sysdeps/x86_64/multiarch/strncat.S. */ IFUNC_IMPL (i, name, strncat, IFUNC_IMPL_ADD (array, i, strncat, HAS_CPU_FEATURE (SSSE3), __strncat_ssse3) IFUNC_IMPL_ADD (array, i, strncat, 1, __strncat_sse2_unaligned) IFUNC_IMPL_ADD (array, i, strncat, 1, __strncat_sse2)) /* Support sysdeps/x86_64/multiarch/strncpy.S. */ IFUNC_IMPL (i, name, strncpy, IFUNC_IMPL_ADD (array, i, strncpy, HAS_CPU_FEATURE (SSSE3), __strncpy_ssse3) IFUNC_IMPL_ADD (array, i, strncpy, 1, __strncpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, strncpy, 1, __strncpy_sse2)) /* Support sysdeps/x86_64/multiarch/strpbrk.S. */ IFUNC_IMPL (i, name, strpbrk, IFUNC_IMPL_ADD (array, i, strpbrk, HAS_CPU_FEATURE (SSE4_2), __strpbrk_sse42) IFUNC_IMPL_ADD (array, i, strpbrk, 1, __strpbrk_sse2)) /* Support sysdeps/x86_64/multiarch/strspn.S. */ IFUNC_IMPL (i, name, strspn, IFUNC_IMPL_ADD (array, i, strspn, HAS_CPU_FEATURE (SSE4_2), __strspn_sse42) IFUNC_IMPL_ADD (array, i, strspn, 1, __strspn_sse2)) /* Support sysdeps/x86_64/multiarch/strstr.c. */ IFUNC_IMPL (i, name, strstr, IFUNC_IMPL_ADD (array, i, strstr, 1, __strstr_sse2_unaligned) IFUNC_IMPL_ADD (array, i, strstr, 1, __strstr_sse2)) /* Support sysdeps/x86_64/multiarch/wcscpy.S. */ IFUNC_IMPL (i, name, wcscpy, IFUNC_IMPL_ADD (array, i, wcscpy, HAS_CPU_FEATURE (SSSE3), __wcscpy_ssse3) IFUNC_IMPL_ADD (array, i, wcscpy, 1, __wcscpy_sse2)) /* Support sysdeps/x86_64/multiarch/wmemcmp.S. */ IFUNC_IMPL (i, name, wmemcmp, IFUNC_IMPL_ADD (array, i, wmemcmp, HAS_CPU_FEATURE (SSE4_1), __wmemcmp_sse4_1) IFUNC_IMPL_ADD (array, i, wmemcmp, HAS_CPU_FEATURE (SSSE3), __wmemcmp_ssse3) IFUNC_IMPL_ADD (array, i, wmemcmp, 1, __wmemcmp_sse2)) #ifdef SHARED /* Support sysdeps/x86_64/multiarch/memcpy_chk.S. */ IFUNC_IMPL (i, name, __memcpy_chk, #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_chk_avx512_unaligned_2) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_chk_avx512_unaligned_erms) #endif IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), __memcpy_chk_avx_unaligned) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), __memcpy_chk_avx_unaligned_2) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), __memcpy_chk_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_CPU_FEATURE (SSSE3), __memcpy_chk_ssse3_back) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_CPU_FEATURE (SSSE3), __memcpy_chk_ssse3) IFUNC_IMPL_ADD (array, i, __memcpy_chk, 1, __memcpy_chk_sse2_unaligned_2) IFUNC_IMPL_ADD (array, i, __memcpy_chk, 1, __memcpy_chk_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memcpy_chk, 1, __memcpy_chk_sse2)) /* Support sysdeps/x86_64/multiarch/memcpy.S. */ IFUNC_IMPL (i, name, memcpy, IFUNC_IMPL_ADD (array, i, memcpy, HAS_ARCH_FEATURE (AVX_Usable), __memcpy_avx_unaligned) IFUNC_IMPL_ADD (array, i, memcpy, HAS_ARCH_FEATURE (AVX_Usable), __memcpy_avx_unaligned_2) IFUNC_IMPL_ADD (array, i, memcpy, HAS_ARCH_FEATURE (AVX_Usable), __memcpy_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, memcpy, HAS_CPU_FEATURE (SSSE3), __memcpy_ssse3_back) IFUNC_IMPL_ADD (array, i, memcpy, HAS_CPU_FEATURE (SSSE3), __memcpy_ssse3) #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, memcpy, HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, memcpy, HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_avx512_unaligned_2) IFUNC_IMPL_ADD (array, i, memcpy, HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_avx512_unaligned_erms) #endif IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_sse2_unaligned_2) IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_erms) IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_sse2)) /* Support sysdeps/x86_64/multiarch/mempcpy_chk.S. */ IFUNC_IMPL (i, name, __mempcpy_chk, #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_chk_avx512_unaligned_2) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_chk_avx512_unaligned_erms) #endif IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_chk_avx_unaligned) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_chk_avx_unaligned_2) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_chk_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_CPU_FEATURE (SSSE3), __mempcpy_chk_ssse3_back) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_CPU_FEATURE (SSSE3), __mempcpy_chk_ssse3) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, 1, __mempcpy_chk_sse2_unaligned_2) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, 1, __mempcpy_chk_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, 1, __mempcpy_chk_sse2)) /* Support sysdeps/x86_64/multiarch/mempcpy.S. */ IFUNC_IMPL (i, name, mempcpy, #ifdef HAVE_AVX512_ASM_SUPPORT IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_avx512_unaligned_2) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_avx512_unaligned_erms) #endif IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_avx_unaligned) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_avx_unaligned_2) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_CPU_FEATURE (SSSE3), __mempcpy_ssse3_back) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_CPU_FEATURE (SSSE3), __mempcpy_ssse3) IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_sse2_unaligned_2) IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_sse2_unaligned_erms) IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_erms) IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_sse2)) /* Support sysdeps/x86_64/multiarch/strncmp.S. */ IFUNC_IMPL (i, name, strncmp, IFUNC_IMPL_ADD (array, i, strncmp, HAS_CPU_FEATURE (SSE4_2), __strncmp_sse42) IFUNC_IMPL_ADD (array, i, strncmp, HAS_CPU_FEATURE (SSSE3), __strncmp_ssse3) IFUNC_IMPL_ADD (array, i, strncmp, 1, __strncmp_sse2)) #endif return i; }