sysdeps/i860/memcopy.h

   1 /* Copyright (C) 1991 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <sysdeps/generic/memcopy.h>
  20
  21 #if 0
  22 #undef  MERGE
  23 /* In order to make this work properly, an 's' constraint need to be added
  24    to tm-i860.h, to mean the SC register.  */
  25 #define MERGE(w0, sh_1, w1, sh_2)                                             \
  26   ({                                                                          \
  27     unsigned int __merge;                                                     \
  28     asm("shrd %2,%1,%0" :                                                     \
  29         "=r" (__merge) :                                                      \
  30         "r" (w0), "r" (w1), "s" (sh_1));                                      \
  31     __merge;                                                                  \
  32   })
  33 #endif