#include"io.h" int main(void) { long long rd, rs, rt; long long result; rs = 0x12345678; rt = 0x87654321; result = 0x456709AB; __asm ("subqh.ph %0, %1, %2\n\t" : "=r"(rd) : "r"(rs), "r"(rt) ); if (rd != result) { printf("subqh.ph error\n"); return -1; } return 0; }