qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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test_add.c (612B)

      1 #include <stdio.h>
      2 
      3 int main(void)
      4 {
      5     int a, b, d;
      6     int result;
      7 
      8     a = 0x100;
      9     b = 0x100;
     10     result = 0x200;
     11     __asm
     12     ("l.add %0, %0, %1\n\t"
     13      : "+r"(a)
     14      : "r"(b)
     15     );
     16     if (a != result) {
     17         printf("add error\n");
     18         return -1;
     19     }
     20 
     21     a = 0xffff;
     22     b = 0x1;
     23     result = 0x10000;
     24     __asm
     25     ("l.add %0, %0, %1\n\t"
     26      : "+r"(a)
     27      : "r"(b)
     28     );
     29     if (a != result) {
     30         printf("add error\n");
     31         return -1;
     32     }
     33 
     34     a = 0x7fffffff;
     35     b = 0x1;
     36     __asm
     37     ("l.add %0, %1, %2\n\t"
     38      : "=r"(d)
     39      : "r"(b), "r"(a)
     40     );
     41 
     42     return 0;
     43 }