| 1 | #include <stdio.h> |
| 2 | |
| 3 | int main(void) |
| 4 | { |
| 5 | int a, b; |
| 6 | int result; |
| 7 | |
| 8 | a = 0x100; |
| 9 | b = 0x100; |
| 10 | result = 0x0; |
| 11 | __asm |
| 12 | ("l.sub %0, %0, %1\n\t" |
| 13 | : "+r"(a) |
| 14 | : "r"(b) |
| 15 | ); |
| 16 | if (a != result) { |
| 17 | printf("sub error\n"); |
| 18 | return -1; |
| 19 | } |
| 20 | |
| 21 | a = 0xffff; |
| 22 | b = 0x1; |
| 23 | result = 0xfffe; |
| 24 | __asm |
| 25 | ("l.sub %0, %0, %1\n\t" |
| 26 | : "+r"(a) |
| 27 | : "r"(b) |
| 28 | ); |
| 29 | if (a != result) { |
| 30 | printf("sub error\n"); |
| 31 | return -1; |
| 32 | } |
| 33 | |
| 34 | return 0; |
| 35 | } |