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/* Enumerate available IFUNC implementations of a function. PowerPC64 version.
Copyright (C) 2013 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 <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);
/* 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,
IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_HAS_VSX,
__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/memset.c. */
IFUNC_IMPL (i, name, memset,
IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_HAS_VSX,
__memset_power7)
IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_ARCH_2_05,
__memset_power6)
IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_POWER4,
__memset_power4)
IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ppc))
#endif
/* Support sysdeps/powerpc/powerpc64/multiarch/memcmp.c. */
IFUNC_IMPL (i, name, memcmp,
IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_HAS_VSX,
__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/bzero.c. */
IFUNC_IMPL (i, name, bzero,
IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_HAS_VSX,
__bzero_power7)
IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_ARCH_2_05,
__bzero_power6)
IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_POWER4,
__bzero_power4)
IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ppc))
return i;
}
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