1  /* Enumerate available IFUNC implementations of a function.  AARCH64 version.
       2     Copyright (C) 2017-2023 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     <https://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  #include <init-arch.h>
      25  #include <stdio.h>
      26  
      27  size_t
      28  __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
      29  			size_t max)
      30  {
      31    size_t i = max;
      32  
      33    INIT_ARCH ();
      34  
      35    /* Support sysdeps/aarch64/multiarch/memcpy.c, memmove.c and memset.c.  */
      36    IFUNC_IMPL (i, name, memcpy,
      37  	      IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_thunderx)
      38  	      IFUNC_IMPL_ADD (array, i, memcpy, !bti, __memcpy_thunderx2)
      39  	      IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_falkor)
      40  #if HAVE_AARCH64_SVE_ASM
      41  	      IFUNC_IMPL_ADD (array, i, memcpy, sve, __memcpy_a64fx)
      42  	      IFUNC_IMPL_ADD (array, i, memcpy, sve, __memcpy_sve)
      43  #endif
      44  	      IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_generic))
      45    IFUNC_IMPL (i, name, memmove,
      46  	      IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_thunderx)
      47  	      IFUNC_IMPL_ADD (array, i, memmove, !bti, __memmove_thunderx2)
      48  	      IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_falkor)
      49  #if HAVE_AARCH64_SVE_ASM
      50  	      IFUNC_IMPL_ADD (array, i, memmove, sve, __memmove_a64fx)
      51  	      IFUNC_IMPL_ADD (array, i, memmove, sve, __memmove_sve)
      52  #endif
      53  	      IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_generic))
      54    IFUNC_IMPL (i, name, memset,
      55  	      /* Enable this on non-falkor processors too so that other cores
      56  		 can do a comparative analysis with __memset_generic.  */
      57  	      IFUNC_IMPL_ADD (array, i, memset, (zva_size == 64), __memset_falkor)
      58  	      IFUNC_IMPL_ADD (array, i, memset, (zva_size == 64), __memset_emag)
      59  	      IFUNC_IMPL_ADD (array, i, memset, 1, __memset_kunpeng)
      60  #if HAVE_AARCH64_SVE_ASM
      61  	      IFUNC_IMPL_ADD (array, i, memset, sve && zva_size == 256, __memset_a64fx)
      62  #endif
      63  	      IFUNC_IMPL_ADD (array, i, memset, 1, __memset_generic))
      64    IFUNC_IMPL (i, name, memchr,
      65  	      IFUNC_IMPL_ADD (array, i, memchr, !mte, __memchr_nosimd)
      66  	      IFUNC_IMPL_ADD (array, i, memchr, 1, __memchr_generic))
      67  
      68    IFUNC_IMPL (i, name, strlen,
      69  	      IFUNC_IMPL_ADD (array, i, strlen, !mte, __strlen_asimd)
      70  	      IFUNC_IMPL_ADD (array, i, strlen, 1, __strlen_mte))
      71  
      72    return 0;
      73  }