tests/tcg/openrisc/test_addc.c

   1 #include <stdio.h>
   2
   3 int main(void)
   4 {
   5     int a, b, c;
   6     int result;
   7
   8     b = 0x01;
   9     c = 0xffffffff;
  10     result = 0;
  11     __asm
  12     ("l.add r1, r1, r0\n\t" /* clear carry */
  13      "l.addc   %0, %1, %2\n\t"
  14      : "=r"(a)
  15      : "r"(b), "r"(c)
  16     );
  17     if (a != result) {
  18         printf("first addc error\n");
  19         return -1;
  20     }
  21
  22     b = 0x01;
  23     c = 0xffffffff;
  24     result = 0x80000001;
  25     __asm
  26     ("l.add r1, r1, r0\n\t" /* clear carry */
  27      "l.addc   %0, %1, %2\n\t"
  28      "l.movhi  %2, 0x7fff\n\t"
  29      "l.ori    %2, %2, 0xffff\n\t"
  30      "l.addc   %0, %1, %2\n\t"
  31      : "=r"(a)
  32      : "r"(b), "r"(c)
  33     );
  34     if (a != result) {
  35         printf("addc error\n");
  36         return -1;
  37     }
  38
  39     return 0;
  40 }