LXR qemu/tests/tcg/mips/user/ase/dsp/test_dsp_r2_dpa_w

   1#include<stdio.h>
   2#include<assert.h>
   3
   4int main()
   5{
   6    int rs, rt;
   7    int ach = 5, acl = 5;
   8    int resulth, resultl;
   9
  10    rs     = 0x00FF00FF;
  11    rt     = 0x00010002;
  12    resulth = 0x05;
  13    resultl = 0x0302;
  14    __asm
  15        ("mthi  %0, $ac1\n\t"
  16         "mtlo  %1, $ac1\n\t"
  17         "dpa.w.ph $ac1, %2, %3\n\t"
  18         "mfhi  %0, $ac1\n\t"
  19         "mflo  %1, $ac1\n\t"
  20         : "+r"(ach), "+r"(acl)
  21         : "r"(rs), "r"(rt)
  22        );
  23    assert(ach == resulth);
  24    assert(acl == resultl);
  25
  26    ach = 6, acl = 7;
  27    rs     = 0xFFFF00FF;
  28    rt     = 0xFFFF0002;
  29    resulth = 0x06;
  30    resultl = 0x206;
  31    __asm
  32        ("mthi  %0, $ac1\n\t"
  33         "mtlo  %1, $ac1\n\t"
  34         "dpa.w.ph $ac1, %2, %3\n\t"
  35         "mfhi  %0, $ac1\n\t"
  36         "mflo  %1, $ac1\n\t"
  37         : "+r"(ach), "+r"(acl)
  38         : "r"(rs), "r"(rt)
  39        );
  40    assert(ach == resulth);
  41    assert(acl == resultl);
  42
  43    return 0;
  44}
  45