tests/tcg/openrisc/test_mul.c

   1 #include <stdio.h>
   2
   3 int main(void)
   4 {
   5     int a, b, c;
   6     int result;
   7
   8     b = 0x4;
   9     c = 0x1;
  10     result = 0x4;
  11     __asm
  12     ("l.mul    %0, %1, %2\n\t"
  13      : "=r"(a)
  14      : "r"(b), "r"(c)
  15     );
  16     if (a != result) {
  17         printf("mul error\n");
  18         return -1;
  19     }
  20
  21     b = 0x1;
  22     c = 0x0;
  23     result = 0x0;
  24     __asm
  25     ("l.mul    %0, %1, %2\n\t"
  26      : "=r"(a)
  27      : "r"(b), "r"(c)
  28     );
  29     if (a != result) {
  30         printf("mul error\n");
  31         return -1;
  32     }
  33
  34     b = 0x1;
  35     c = 0xff;
  36     result = 0xff;
  37     __asm
  38     ("l.mul    %0, %1, %2\n\t"
  39      : "=r"(a)
  40      : "r"(b), "r"(c)
  41     );
  42     if (a != result) {
  43         printf("mul error\n");
  44         return -1;
  45     }
  46
  47     b = 0x7fffffff;
  48     c = 0x2;
  49     result = 0xfffffffe;
  50     __asm
  51     ("l.mul    %0, %1, %2\n\t"
  52      : "=r"(a)
  53      : "r"(b), "r"(c)
  54     );
  55     if (a != result) {
  56         printf("mul error\n");
  57         return -1;
  58     }
  59
  60     return 0;
  61 }