LXR qemu/tests/tcg/mips/user/ase/dsp/test_dsp_r1

   1#include<stdio.h>
   2#include<assert.h>
   3
   4int main()
   5{
   6    int rs, ach, acl, dsp;
   7    int result, resulth, resultl;
   8
   9    dsp = 0x07;
  10    ach = 0x05;
  11    acl = 0xB4CB;
  12    rs  = 0x00FFBBAA;
  13    resulth = 0xB4CB;
  14    resultl = 0x00FFBBAA;
  15    result  = 0x27;
  16
  17    __asm
  18        ("wrdsp %0, 0x01\n\t"
  19         "mthi %1, $ac1\n\t"
  20         "mtlo %2, $ac1\n\t"
  21         "mthlip %3, $ac1\n\t"
  22         "mfhi %1, $ac1\n\t"
  23         "mflo %2, $ac1\n\t"
  24         "rddsp %0\n\t"
  25         : "+r"(dsp), "+r"(ach), "+r"(acl)
  26         : "r"(rs)
  27        );
  28    dsp = dsp & 0x3F;
  29    assert(dsp == result);
  30    assert(ach == resulth);
  31    assert(acl == resultl);
  32
  33    dsp = 0x1f;
  34    ach = 0x05;
  35    acl = 0xB4CB;
  36    rs  = 0x00FFBBAA;
  37    resulth = 0xB4CB;
  38    resultl = 0x00FFBBAA;
  39    result  = 0x3f;
  40
  41    __asm
  42        ("wrdsp %0, 0x01\n\t"
  43         "mthi %1, $ac1\n\t"
  44         "mtlo %2, $ac1\n\t"
  45         "mthlip %3, $ac1\n\t"
  46         "mfhi %1, $ac1\n\t"
  47         "mflo %2, $ac1\n\t"
  48         "rddsp %0\n\t"
  49         : "+r"(dsp), "+r"(ach), "+r"(acl)
  50         : "r"(rs)
  51        );
  52    dsp = dsp & 0x3F;
  53    assert(dsp == result);
  54    assert(ach == resulth);
  55    assert(acl == resultl);
  56
  57    return 0;
  58}
  59