sysdeps/s390/s390-64/strcpy.S

   1 /* strcpy - copy a string from source to destination.  64 bit S/390 version.
   2    Copyright (C) 2001-2016 Free Software Foundation, Inc.
   3    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 /* INPUT PARAMETERS
  21      %r2 = address of destination
  22      %r3 = address of source.  */
  23
  24 #include "sysdep.h"
  25 #include "asm-syntax.h"
  26
  27         .text
  28 ENTRY(strcpy)
  29         slgr  %r0,%r0
  30         lgr   %r1,%r2
  31 0:      mvst  %r1,%r3
  32         jo    0b
  33         br    %r14
  34 END(strcpy)
  35 libc_hidden_builtin_def (strcpy)