LXR qemu/tests/tcg/openrisc/test

   1#include <stdio.h>
   2
   3int 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}
  41