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111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
/* Enumerate available IFUNC implementations of a function. PowerPC64 version.
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Copyright (C) 2013 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 <ldsodefs.h>
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#include <ifunc-impl-list.h>
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/* Maximum number of IFUNC implementations. */
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#define MAX_IFUNC 6
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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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unsigned long int hwcap = GLRO(dl_hwcap);
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/* hwcap contains only the latest supported ISA, the code checks which is
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and fills the previous supported ones. */
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if (hwcap & PPC_FEATURE_ARCH_2_06)
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hwcap |= PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_POWER5_PLUS |
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PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
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else if (hwcap & PPC_FEATURE_ARCH_2_05)
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hwcap |= PPC_FEATURE_POWER5_PLUS | PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
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else if (hwcap & PPC_FEATURE_POWER5_PLUS)
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hwcap |= PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
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else if (hwcap & PPC_FEATURE_POWER5)
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hwcap |= PPC_FEATURE_POWER4;
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#ifdef SHARED
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/* Support sysdeps/powerpc/powerpc64/multiarch/memcpy.c. */
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IFUNC_IMPL (i, name, memcpy,
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IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_HAS_VSX,
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__memcpy_power7)
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IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_06,
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__memcpy_a2)
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IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_05,
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__memcpy_power6)
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IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_CELL_BE,
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__memcpy_cell)
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IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_POWER4,
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__memcpy_power4)
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IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ppc))
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/* Support sysdeps/powerpc/powerpc64/multiarch/memset.c. */
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IFUNC_IMPL (i, name, memset,
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IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_HAS_VSX,
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__memset_power7)
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IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_ARCH_2_05,
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__memset_power6)
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IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_POWER4,
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__memset_power4)
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IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ppc))
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#endif
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/* Support sysdeps/powerpc/powerpc64/multiarch/memcmp.c. */
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IFUNC_IMPL (i, name, memcmp,
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IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_HAS_VSX,
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__memcmp_power7)
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IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_POWER4,
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__memcmp_power4)
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IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_ppc))
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/* Support sysdeps/powerpc/powerpc64/multiarch/bzero.c. */
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IFUNC_IMPL (i, name, bzero,
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_HAS_VSX,
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__bzero_power7)
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_ARCH_2_05,
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__bzero_power6)
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_POWER4,
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__bzero_power4)
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IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ppc))
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/* Support sysdeps/powerpc/powerpc64/multiarch/mempcpy.c. */
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IFUNC_IMPL (i, name, mempcpy,
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IFUNC_IMPL_ADD (array, i, mempcpy,
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hwcap & PPC_FEATURE_HAS_VSX,
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__mempcpy_power7)
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IFUNC_IMPL_ADD (array, i, mempcpy, 1,
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__mempcpy_ppc))
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/* Support sysdeps/powerpc/powerpc64/multiarch/memchr.c. */
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IFUNC_IMPL (i, name, memchr,
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IFUNC_IMPL_ADD (array, i, memchr,
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hwcap & PPC_FEATURE_HAS_VSX,
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__memchr_power7)
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IFUNC_IMPL_ADD (array, i, memchr, 1,
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__memchr_ppc))
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return i;
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}
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