tests/tcg/s390x/csst.c

   1 #include <stdint.h>
   2 #include <unistd.h>
   3
   4 int main(void)
   5 {
   6     uint64_t parmlist[] __attribute__((aligned(16))) = {
   7         0xfedcba9876543210ull,
   8         0,
   9         0x7777777777777777ull,
  10         0,
  11     };
  12     uint64_t op1 = 0x0123456789abcdefull;
  13     uint64_t op2 = 0;
  14     uint64_t op3 = op1;
  15     uint64_t cc;
  16
  17     asm volatile(
  18         "    lghi %%r0,%[flags]\n"
  19         "    la %%r1,%[parmlist]\n"
  20         "    csst %[op1],%[op2],%[op3]\n"
  21         "    ipm %[cc]\n"
  22         : [op1] "+m" (op1),
  23           [op2] "+m" (op2),
  24           [op3] "+r" (op3),
  25           [cc] "=r" (cc)
  26         : [flags] "K" (0x0301),
  27           [parmlist] "m" (parmlist)
  28         : "r0", "r1", "cc", "memory");
  29     cc = (cc >> 28) & 3;
  30     if (cc) {
  31         write(1, "bad cc\n", 7);
  32         return 1;
  33     }
  34     if (op1 != parmlist[0]) {
  35         write(1, "bad op1\n", 8);
  36         return 1;
  37     }
  38     if (op2 != parmlist[2]) {
  39         write(1, "bad op2\n", 8);
  40         return 1;
  41     }
  42     return 0;
  43 }