tests/tcg/s390x/exrl-trt.c

   1 #include <stdint.h>
   2 #include <unistd.h>
   3
   4 int main(void)
   5 {
   6     char op1[] = "hello";
   7     char op2[256];
   8     register uint64_t r1 asm("r1") = 0xffffffffffffffffull;
   9     register uint64_t r2 asm("r2") = 0xffffffffffffffffull;
  10     uint64_t cc;
  11     int i;
  12
  13     for (i = 0; i < 256; i++) {
  14         if (i == 0) {
  15             op2[i] = 0xaa;
  16         } else {
  17             op2[i] = 0;
  18         }
  19     }
  20     asm volatile(
  21         "    j 2f\n"
  22         "1:  trt 0(1,%[op1]),%[op2]\n"
  23         "2:  exrl %[op1_len],1b\n"
  24         "    ipm %[cc]\n"
  25         : [r1] "+r" (r1),
  26           [r2] "+r" (r2),
  27           [cc] "=r" (cc)
  28         : [op1] "a" (&op1),
  29           [op1_len] "a" (5),
  30           [op2] "Q" (op2)
  31         : "cc");
  32     cc = (cc >> 28) & 3;
  33     if (cc != 2) {
  34         write(1, "bad cc\n", 7);
  35         return 1;
  36     }
  37     if ((char *)r1 != &op1[5]) {
  38         write(1, "bad r1\n", 7);
  39         return 1;
  40     }
  41     if (r2 != 0xffffffffffffffaaull) {
  42         write(1, "bad r2\n", 7);
  43         return 1;
  44     }
  45     return 0;
  46 }