sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c

   1 /* Enumerate available IFUNC implementations of a function.  PowerPC64 version.
   2    Copyright (C) 2013 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <assert.h>
  20 #include <string.h>
  21 #include <wchar.h>
  22 #include <ldsodefs.h>
  23 #include <ifunc-impl-list.h>
  24
  25 /* Maximum number of IFUNC implementations.  */
  26 #define MAX_IFUNC       6
  27
  28 size_t
  29 __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
  30                         size_t max)
  31 {
  32   assert (max >= MAX_IFUNC);
  33
  34   size_t i = 0;
  35
  36   unsigned long int hwcap = GLRO(dl_hwcap);
  37   /* hwcap contains only the latest supported ISA, the code checks which is
  38      and fills the previous supported ones.  */
  39   if (hwcap & PPC_FEATURE_ARCH_2_06)
  40     hwcap |= PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_POWER5_PLUS |
  41              PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
  42   else if (hwcap & PPC_FEATURE_ARCH_2_05)
  43     hwcap |= PPC_FEATURE_POWER5_PLUS | PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
  44   else if (hwcap & PPC_FEATURE_POWER5_PLUS)
  45     hwcap |= PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
  46   else if (hwcap & PPC_FEATURE_POWER5)
  47     hwcap |= PPC_FEATURE_POWER4;
  48
  49 #ifdef SHARED
  50   /* Support sysdeps/powerpc/powerpc64/multiarch/memcpy.c.  */
  51   IFUNC_IMPL (i, name, memcpy,
  52               IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_HAS_VSX,
  53                               __memcpy_power7)
  54               IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_06,
  55                               __memcpy_a2)
  56               IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_05,
  57                               __memcpy_power6)
  58               IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_CELL_BE,
  59                               __memcpy_cell)
  60               IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_POWER4,
  61                               __memcpy_power4)
  62               IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ppc))
  63
  64   /* Support sysdeps/powerpc/powerpc64/multiarch/memset.c.  */
  65   IFUNC_IMPL (i, name, memset,
  66               IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_HAS_VSX,
  67                               __memset_power7)
  68               IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_ARCH_2_05,
  69                               __memset_power6)
  70               IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_POWER4,
  71                               __memset_power4)
  72               IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ppc))
  73 #endif
  74
  75   /* Support sysdeps/powerpc/powerpc64/multiarch/memcmp.c.  */
  76   IFUNC_IMPL (i, name, memcmp,
  77               IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_HAS_VSX,
  78                               __memcmp_power7)
  79               IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_POWER4,
  80                               __memcmp_power4)
  81               IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_ppc))
  82
  83   /* Support sysdeps/powerpc/powerpc64/multiarch/bzero.c.  */
  84   IFUNC_IMPL (i, name, bzero,
  85               IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_HAS_VSX,
  86                               __bzero_power7)
  87               IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_ARCH_2_05,
  88                               __bzero_power6)
  89               IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_POWER4,
  90                               __bzero_power4)
  91               IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ppc))
  92
  93   /* Support sysdeps/powerpc/powerpc64/multiarch/mempcpy.c.  */
  94   IFUNC_IMPL (i, name, mempcpy,
  95               IFUNC_IMPL_ADD (array, i, mempcpy,
  96                               hwcap & PPC_FEATURE_HAS_VSX,
  97                               __mempcpy_power7)
  98               IFUNC_IMPL_ADD (array, i, mempcpy, 1,
  99                               __mempcpy_ppc))
 100
 101   /* Support sysdeps/powerpc/powerpc64/multiarch/memchr.c.  */
 102   IFUNC_IMPL (i, name, memchr,
 103               IFUNC_IMPL_ADD (array, i, memchr,
 104                               hwcap & PPC_FEATURE_HAS_VSX,
 105                               __memchr_power7)
 106               IFUNC_IMPL_ADD (array, i, memchr, 1,
 107                               __memchr_ppc))
 108
 109   /* Support sysdeps/powerpc/powerpc64/multiarch/memrchr.c.  */
 110   IFUNC_IMPL (i, name, memrchr,
 111               IFUNC_IMPL_ADD (array, i, memrchr,
 112                               hwcap & PPC_FEATURE_HAS_VSX,
 113                               __memrchr_power7)
 114               IFUNC_IMPL_ADD (array, i, memrchr, 1,
 115                               __memrchr_ppc))
 116
 117   /* Support sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c.  */
 118   IFUNC_IMPL (i, name, rawmemchr,
 119               IFUNC_IMPL_ADD (array, i, rawmemchr,
 120                               hwcap & PPC_FEATURE_HAS_VSX,
 121                               __rawmemchr_power7)
 122               IFUNC_IMPL_ADD (array, i, rawmemchr, 1,
 123                               __rawmemchr_ppc))
 124
 125   return i;
 126 }