tests/tcg/mips/mips64-dsp/dmsub.c

   1 #include "io.h"
   2
   3 int main(void)
   4 {
   5     long long rt, rs;
   6     long long achi, acli;
   7     long long acho, aclo;
   8     long long resh, resl;
   9     achi = 0x1;
  10     acli = 0x8;
  11
  12     rs = 0x0000000100000001;
  13     rt = 0x0000000200000002;
  14
  15     resh = 0x1;
  16     resl = 0x4;
  17
  18     __asm
  19         ("mthi %2, $ac1 \t\n"
  20          "mtlo %3, $ac1 \t\n"
  21          "dmsub $ac1, %4, %5\t\n"
  22          "mfhi %0, $ac1 \t\n"
  23          "mflo %1, $ac1 \t\n"
  24          : "=r"(acho), "=r"(aclo)
  25          : "r"(achi), "r"(acli), "r"(rs), "r"(rt)
  26         );
  27     if ((acho != resh) || (aclo != resl)) {
  28         printf("1 dmsub error\n");
  29
  30         return -1;
  31     }
  32
  33     achi = 0xfffffffF;
  34     acli = 0xfffffffF;
  35
  36     rs = 0x8888999977776666;
  37     rt = 0x9999888877776666;
  38
  39     resh = 0xffffffffffffffff;
  40     resl = 0x789aae13;
  41
  42     __asm
  43         ("mthi %2, $ac1 \t\n"
  44          "mtlo %3, $ac1 \t\n"
  45          "dmsub $ac1, %4, %5\t\n"
  46          "mfhi %0, $ac1 \t\n"
  47          "mflo %1, $ac1 \t\n"
  48          : "=r"(acho), "=r"(aclo)
  49          : "r"(achi), "r"(acli), "r"(rs), "r"(rt)
  50         );
  51
  52     if ((acho != resh) || (aclo != resl)) {
  53         printf("2 dmsub error\n");
  54
  55         return -1;
  56     }
  57
  58     return 0;
  59 }