kernel/lib/string/memcpy.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   4  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   5  *
   6  *  This program is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program 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
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20
  21 #include <string.h> /* size_t */
  22
  23 void *memcpy (void *dst_ptr, const void *src_ptr, size_t count)
  24 {
  25         void *ret_val = dst_ptr;
  26         const char *src = (const char *) src_ptr;
  27         char *dst = (char *) dst_ptr;
  28
  29         /* copy up */
  30         for ( ; count; count --)
  31                 *dst ++ = *src ++;
  32
  33         return ret_val;
  34 }