| #include <stdint.h> |
| #include <unistd.h> |
| |
| int main(void) |
| { |
| char op1[] = "hello"; |
| char op2[256]; |
| uint64_t r1 = 0xffffffffffffffffull; |
| uint64_t r2 = 0xffffffffffffffffull; |
| uint64_t cc; |
| int i; |
| |
| for (i = 0; i < 256; i++) { |
| if (i == 0) { |
| op2[i] = 0xaa; |
| } else { |
| op2[i] = 0; |
| } |
| } |
| asm volatile( |
| " j 2f\n" |
| "1: trt 0(1,%[op1]),0(%[op2])\n" |
| "2: exrl %[op1_len],1b\n" |
| " lgr %[r1],%%r1\n" |
| " lgr %[r2],%%r2\n" |
| " ipm %[cc]\n" |
| : [r1] "+r" (r1), |
| [r2] "+r" (r2), |
| [cc] "=r" (cc) |
| : [op1] "r" (&op1), |
| [op1_len] "r" (5), |
| [op2] "r" (&op2) |
| : "r1", "r2", "cc"); |
| cc = (cc >> 28) & 3; |
| if (cc != 2) { |
| write(1, "bad cc\n", 7); |
| return 1; |
| } |
| if ((char *)r1 != &op1[5]) { |
| write(1, "bad r1\n", 7); |
| return 1; |
| } |
| if (r2 != 0xffffffffffffffaaull) { |
| write(1, "bad r2\n", 7); |
| return 1; |
| } |
| return 0; |
| } |
