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glibc/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
Adhemerval Zanella 4e81019f30 powerpc: Remove powerpc64 bzero optimizations 
The symbol is not present in current POSIX specification and compiler
already generates memset call.
2022-02-23 14:18:18 -03:00

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/* Enumerate available IFUNC implementations of a function. PowerPC64 version.
Copyright (C) 2013-2022 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
<https://www.gnu.org/licenses/>. */
#include <assert.h>
#include <string.h>
#include <wchar.h>
#include <ldsodefs.h>
#include <ifunc-impl-list.h>
/* Maximum number of IFUNC implementations. */
#define MAX_IFUNC 6
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;
unsigned long int hwcap = GLRO(dl_hwcap);
unsigned long int hwcap2 = GLRO(dl_hwcap2);
#ifdef SHARED
int cacheline_size = GLRO(dl_cache_line_size);
#endif
/* hwcap contains only the latest supported ISA, the code checks which is
and fills the previous supported ones. */
if (hwcap & PPC_FEATURE_ARCH_2_06)
hwcap |= PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_POWER5_PLUS |
PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
else if (hwcap & PPC_FEATURE_ARCH_2_05)
hwcap |= PPC_FEATURE_POWER5_PLUS | PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
else if (hwcap & PPC_FEATURE_POWER5_PLUS)
hwcap |= PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
else if (hwcap & PPC_FEATURE_POWER5)
hwcap |= PPC_FEATURE_POWER4;
#ifdef SHARED
/* Support sysdeps/powerpc/powerpc64/multiarch/memcpy.c. */
IFUNC_IMPL (i, name, memcpy,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, memcpy,
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap & PPC_FEATURE_HAS_VSX,
__memcpy_power10)
#endif
IFUNC_IMPL_ADD (array, i, memcpy, hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__memcpy_power8_cached)
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__memcpy_power7)
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_06,
__memcpy_a2)
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_05,
__memcpy_power6)
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_CELL_BE,
__memcpy_cell)
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_POWER4,
__memcpy_power4)
IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/memmove.c. */
IFUNC_IMPL (i, name, memmove,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, memmove,
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX,
__memmove_power10)
#endif
IFUNC_IMPL_ADD (array, i, memmove, hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__memmove_power7)
IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/memset.c. */
IFUNC_IMPL (i, name, memset,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, memset,
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX
&& cacheline_size == 128,
__memset_power10)
#endif
IFUNC_IMPL_ADD (array, i, memset, hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC
&& cacheline_size == 128,
__memset_power8)
IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_ARCH_2_06
&& cacheline_size == 128,
__memset_power7)
IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_ARCH_2_05
&& cacheline_size == 128,
__memset_power6)
IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_POWER4
&& cacheline_size == 128,
__memset_power4)
IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcpy.c. */
IFUNC_IMPL (i, name, strcpy,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, strcpy, hwcap2 & PPC_FEATURE2_ARCH_3_00
&& hwcap & PPC_FEATURE_HAS_VSX,
__strcpy_power9)
#endif
IFUNC_IMPL_ADD (array, i, strcpy, hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strcpy_power8)
IFUNC_IMPL_ADD (array, i, strcpy, hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_VSX,
__strcpy_power7)
IFUNC_IMPL_ADD (array, i, strcpy, 1,
__strcpy_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/stpcpy.c. */
IFUNC_IMPL (i, name, stpcpy,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, stpcpy, hwcap2 & PPC_FEATURE2_ARCH_3_00
&& hwcap & PPC_FEATURE_HAS_VSX,
__stpcpy_power9)
#endif
IFUNC_IMPL_ADD (array, i, stpcpy, hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__stpcpy_power8)
IFUNC_IMPL_ADD (array, i, stpcpy, hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_VSX,
__stpcpy_power7)
IFUNC_IMPL_ADD (array, i, stpcpy, 1,
__stpcpy_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strlen.c. */
IFUNC_IMPL (i, name, strlen,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, strlen, hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap & PPC_FEATURE_HAS_VSX,
__strlen_power10)
IFUNC_IMPL_ADD (array, i, strlen, hwcap2 & PPC_FEATURE2_ARCH_3_00
&& hwcap & PPC_FEATURE_HAS_VSX,
__strlen_power9)
#endif
IFUNC_IMPL_ADD (array, i, strlen, hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strlen_power8)
IFUNC_IMPL_ADD (array, i, strlen, hwcap & PPC_FEATURE_ARCH_2_06,
__strlen_power7)
IFUNC_IMPL_ADD (array, i, strlen, 1,
__strlen_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strncmp.c. */
IFUNC_IMPL (i, name, strncmp,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, strncmp, hwcap2 & PPC_FEATURE2_ARCH_3_00
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strncmp_power9)
#endif
IFUNC_IMPL_ADD (array, i, strncmp, hwcap2 & PPC_FEATURE2_ARCH_2_07,
__strncmp_power8)
IFUNC_IMPL_ADD (array, i, strncmp, hwcap & PPC_FEATURE_ARCH_2_06,
__strncmp_power7)
IFUNC_IMPL_ADD (array, i, strncmp, hwcap & PPC_FEATURE_POWER4,
__strncmp_power4)
IFUNC_IMPL_ADD (array, i, strncmp, 1,
__strncmp_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strchr.c. */
IFUNC_IMPL (i, name, strchr,
IFUNC_IMPL_ADD (array, i, strchr,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strchr_power8)
IFUNC_IMPL_ADD (array, i, strchr,
hwcap & PPC_FEATURE_ARCH_2_06,
__strchr_power7)
IFUNC_IMPL_ADD (array, i, strchr, 1,
__strchr_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strchrnul.c. */
IFUNC_IMPL (i, name, strchrnul,
IFUNC_IMPL_ADD (array, i, strchrnul,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strchrnul_power8)
IFUNC_IMPL_ADD (array, i, strchrnul,
hwcap & PPC_FEATURE_ARCH_2_06,
__strchrnul_power7)
IFUNC_IMPL_ADD (array, i, strchrnul, 1,
__strchrnul_ppc))
#endif
/* Support sysdeps/powerpc/powerpc64/multiarch/memcmp.c. */
IFUNC_IMPL (i, name, memcmp,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, memcmp,
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap & PPC_FEATURE_HAS_VSX,
__memcmp_power10)
#endif
IFUNC_IMPL_ADD (array, i, memcmp, hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__memcmp_power8)
IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_ARCH_2_06,
__memcmp_power7)
IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_POWER4,
__memcmp_power4)
IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/mempcpy.c. */
IFUNC_IMPL (i, name, mempcpy,
IFUNC_IMPL_ADD (array, i, mempcpy,
hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__mempcpy_power7)
IFUNC_IMPL_ADD (array, i, mempcpy, 1,
__mempcpy_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/memchr.c. */
IFUNC_IMPL (i, name, memchr,
IFUNC_IMPL_ADD (array, i, memchr,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__memchr_power8)
IFUNC_IMPL_ADD (array, i, memchr,
hwcap & PPC_FEATURE_ARCH_2_06,
__memchr_power7)
IFUNC_IMPL_ADD (array, i, memchr, 1,
__memchr_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/memrchr.c. */
IFUNC_IMPL (i, name, memrchr,
IFUNC_IMPL_ADD (array, i, memrchr,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__memrchr_power8)
IFUNC_IMPL_ADD (array, i, memrchr,
hwcap & PPC_FEATURE_ARCH_2_06,
__memrchr_power7)
IFUNC_IMPL_ADD (array, i, memrchr, 1,
__memrchr_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c. */
IFUNC_IMPL (i, name, rawmemchr,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, rawmemchr,
(hwcap2 & PPC_FEATURE2_ARCH_3_1)
&& (hwcap & PPC_FEATURE_HAS_VSX),
__rawmemchr_power10)
IFUNC_IMPL_ADD (array, i, rawmemchr,
hwcap2 & PPC_FEATURE2_ARCH_3_00
&& hwcap & PPC_FEATURE_HAS_VSX,
__rawmemchr_power9)
#endif
IFUNC_IMPL_ADD (array, i, rawmemchr,
hwcap & PPC_FEATURE_ARCH_2_06,
__rawmemchr_power7)
IFUNC_IMPL_ADD (array, i, rawmemchr, 1,
__rawmemchr_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strnlen.c. */
IFUNC_IMPL (i, name, strnlen,
IFUNC_IMPL_ADD (array, i, strnlen,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strnlen_power8)
IFUNC_IMPL_ADD (array, i, strnlen, hwcap & PPC_FEATURE_ARCH_2_06,
__strnlen_power7)
IFUNC_IMPL_ADD (array, i, strnlen, 1,
__strnlen_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c. */
IFUNC_IMPL (i, name, strcasecmp,
IFUNC_IMPL_ADD (array, i, strcasecmp,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strcasecmp_power8)
IFUNC_IMPL_ADD (array, i, strcasecmp,
hwcap & PPC_FEATURE_ARCH_2_06,
__strcasecmp_power7)
IFUNC_IMPL_ADD (array, i, strcasecmp, 1, __strcasecmp_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c. */
IFUNC_IMPL (i, name, strcasecmp_l,
IFUNC_IMPL_ADD (array, i, strcasecmp_l,
hwcap & PPC_FEATURE_ARCH_2_06,
__strcasecmp_l_power7)
IFUNC_IMPL_ADD (array, i, strcasecmp_l, 1,
__strcasecmp_l_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strncase.c. */
IFUNC_IMPL (i, name, strncasecmp,
IFUNC_IMPL_ADD (array, i, strncasecmp,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strncasecmp_power8)
IFUNC_IMPL_ADD (array, i, strncasecmp,
hwcap & PPC_FEATURE_ARCH_2_06,
__strncasecmp_power7)
IFUNC_IMPL_ADD (array, i, strncasecmp, 1, __strncasecmp_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strncase_l.c. */
IFUNC_IMPL (i, name, strncasecmp_l,
IFUNC_IMPL_ADD (array, i, strncasecmp_l,
hwcap & PPC_FEATURE_ARCH_2_06,
__strncasecmp_l_power7)
IFUNC_IMPL_ADD (array, i, strncasecmp_l, 1,
__strncasecmp_l_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strrchr.c. */
IFUNC_IMPL (i, name, strrchr,
IFUNC_IMPL_ADD (array, i, strrchr,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strrchr_power8)
IFUNC_IMPL_ADD (array, i, strrchr,
hwcap & PPC_FEATURE_ARCH_2_06,
__strrchr_power7)
IFUNC_IMPL_ADD (array, i, strrchr, 1,
__strrchr_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strncat.c. */
IFUNC_IMPL (i, name, strncat,
IFUNC_IMPL_ADD (array, i, strncat,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_VSX,
__strncat_power8)
IFUNC_IMPL_ADD (array, i, strncat,
hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_VSX,
__strncat_power7)
IFUNC_IMPL_ADD (array, i, strncat, 1,
__strncat_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strncpy.c. */
IFUNC_IMPL (i, name, strncpy,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, strncpy,
(hwcap2 & PPC_FEATURE2_ARCH_3_00)
&& (hwcap & PPC_FEATURE_HAS_VSX),
__strncpy_power9)
#endif
IFUNC_IMPL_ADD (array, i, strncpy,
hwcap2 & PPC_FEATURE2_ARCH_2_07,
__strncpy_power8)
IFUNC_IMPL_ADD (array, i, strncpy,
hwcap & PPC_FEATURE_ARCH_2_06,
__strncpy_power7)
IFUNC_IMPL_ADD (array, i, strncpy, 1,
__strncpy_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/stpncpy.c. */
IFUNC_IMPL (i, name, stpncpy,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, stpncpy,
(hwcap2 & PPC_FEATURE2_ARCH_3_00)
&& (hwcap & PPC_FEATURE_HAS_VSX),
__stpncpy_power9)
#endif
IFUNC_IMPL_ADD (array, i, stpncpy,
hwcap2 & PPC_FEATURE2_ARCH_2_07,
__stpncpy_power8)
IFUNC_IMPL_ADD (array, i, stpncpy,
hwcap & PPC_FEATURE_ARCH_2_06,
__stpncpy_power7)
IFUNC_IMPL_ADD (array, i, stpncpy, 1,
__stpncpy_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcmp.c. */
IFUNC_IMPL (i, name, strcmp,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, strcmp,
hwcap2 & PPC_FEATURE2_ARCH_3_00
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strcmp_power9)
#endif
IFUNC_IMPL_ADD (array, i, strcmp,
hwcap2 & PPC_FEATURE2_ARCH_2_07,
__strcmp_power8)
IFUNC_IMPL_ADD (array, i, strcmp,
hwcap & PPC_FEATURE_ARCH_2_06,
__strcmp_power7)
IFUNC_IMPL_ADD (array, i, strcmp, 1,
__strcmp_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcat.c. */
IFUNC_IMPL (i, name, strcat,
IFUNC_IMPL_ADD (array, i, strcat,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_VSX,
__strcat_power8)
IFUNC_IMPL_ADD (array, i, strcat,
hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_VSX,
__strcat_power7)
IFUNC_IMPL_ADD (array, i, strcat, 1,
__strcat_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strspn.c. */
IFUNC_IMPL (i, name, strspn,
IFUNC_IMPL_ADD (array, i, strspn,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_VSX,
__strspn_power8)
IFUNC_IMPL_ADD (array, i, strspn, 1,
__strspn_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcspn.c. */
IFUNC_IMPL (i, name, strcspn,
IFUNC_IMPL_ADD (array, i, strcspn,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_VSX,
__strcspn_power8)
IFUNC_IMPL_ADD (array, i, strcspn, 1,
__strcspn_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strstr.c. */
IFUNC_IMPL (i, name, strstr,
IFUNC_IMPL_ADD (array, i, strstr,
hwcap & PPC_FEATURE_ARCH_2_06,
__strstr_power7)
IFUNC_IMPL_ADD (array, i, strstr, 1,
__strstr_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcasestr.c. */
IFUNC_IMPL (i, name, strcasestr,
IFUNC_IMPL_ADD (array, i, strcasestr,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
__strcasestr_power8)
IFUNC_IMPL_ADD (array, i, strcasestr, 1,
__strcasestr_ppc))
return i;
}
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