1  /* Multiple versions of memcpy.
       2     Copyright (C) 2015-2023 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 <ifunc-memcpy.h>
      20  
      21  #if HAVE_MEMCPY_IFUNC
      22  # define memcpy __redirect_memcpy
      23  # include <string.h>
      24  # undef memcpy
      25  # include <ifunc-resolve.h>
      26  
      27  # if HAVE_MEMCPY_Z900_G5
      28  extern __typeof (__redirect_memcpy) MEMCPY_Z900_G5 attribute_hidden;
      29  # endif
      30  
      31  # if HAVE_MEMCPY_Z10
      32  extern __typeof (__redirect_memcpy) MEMCPY_Z10 attribute_hidden;
      33  # endif
      34  
      35  # if HAVE_MEMCPY_Z196
      36  extern __typeof (__redirect_memcpy) MEMCPY_Z196 attribute_hidden;
      37  # endif
      38  
      39  s390_libc_ifunc_expr (__redirect_memcpy, memcpy,
      40  		      ({
      41  			s390_libc_ifunc_expr_stfle_init ();
      42  			(HAVE_MEMCPY_Z196 && S390_IS_Z196 (stfle_bits))
      43  			  ? MEMCPY_Z196
      44  			  : (HAVE_MEMCPY_Z10 && S390_IS_Z10 (stfle_bits))
      45  			  ? MEMCPY_Z10
      46  			  : MEMCPY_DEFAULT;
      47  		      })
      48  		      )
      49  #endif