arch/m68k-amiga/c/test-cas.c

   1 /*
   2     Copyright © 2019, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <proto/exec.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <exec/execbase.h>
  11
  12 int main(int argc, char **argv)
  13 {
  14     unsigned curval = 0, oldval = 0, newval = 1, result;
  15     unsigned *mem = &curval;
  16
  17     printf("Testing CAS instruction...\n");
  18
  19         __asm__ __volatile__("casl %0,%2,%1"
  20                              : "=d" (result), "=m" (*mem)
  21                              : "d" (newval), "0" (oldval), "m" (*mem));
  22
  23     printf("CAS result = %d.\n", curval);
  24
  25     return 0;
  26 }
  27