tests/tcg/s390x/div.c

   1 #include <assert.h>
   2 #include <stdint.h>
   3
   4 static void test_dr(void)
   5 {
   6     register int32_t r0 asm("r0") = -1;
   7     register int32_t r1 asm("r1") = -4241;
   8     int32_t b = 101, q, r;
   9
  10     asm("dr %[r0],%[b]"
  11         : [r0] "+r" (r0), [r1] "+r" (r1)
  12         : [b] "r" (b)
  13         : "cc");
  14     q = r1;
  15     r = r0;
  16     assert(q == -41);
  17     assert(r == -100);
  18 }
  19
  20 static void test_dlr(void)
  21 {
  22     register uint32_t r0 asm("r0") = 0;
  23     register uint32_t r1 asm("r1") = 4243;
  24     uint32_t b = 101, q, r;
  25
  26     asm("dlr %[r0],%[b]"
  27         : [r0] "+r" (r0), [r1] "+r" (r1)
  28         : [b] "r" (b)
  29         : "cc");
  30     q = r1;
  31     r = r0;
  32     assert(q == 42);
  33     assert(r == 1);
  34 }
  35
  36 static void test_dsgr(void)
  37 {
  38     register int64_t r0 asm("r0") = -1;
  39     register int64_t r1 asm("r1") = -4241;
  40     int64_t b = 101, q, r;
  41
  42     asm("dsgr %[r0],%[b]"
  43         : [r0] "+r" (r0), [r1] "+r" (r1)
  44         : [b] "r" (b)
  45         : "cc");
  46     q = r1;
  47     r = r0;
  48     assert(q == -41);
  49     assert(r == -100);
  50 }
  51
  52 static void test_dlgr(void)
  53 {
  54     register uint64_t r0 asm("r0") = 0;
  55     register uint64_t r1 asm("r1") = 4243;
  56     uint64_t b = 101, q, r;
  57
  58     asm("dlgr %[r0],%[b]"
  59         : [r0] "+r" (r0), [r1] "+r" (r1)
  60         : [b] "r" (b)
  61         : "cc");
  62     q = r1;
  63     r = r0;
  64     assert(q == 42);
  65     assert(r == 1);
  66 }
  67
  68 int main(void)
  69 {
  70     test_dr();
  71     test_dlr();
  72     test_dsgr();
  73     test_dlgr();
  74     return 0;
  75 }