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 rt, rs, ach, acl, dsp, pos, efi;
   7    int result;
   8
   9    ach = 0x05;
  10    acl = 0xB4CB;
  11    dsp = 0x07;
  12    rs  = 0x03;
  13    result = 0x000C;
  14
  15    __asm
  16        ("wrdsp %1, 0x01\n\t"
  17         "mthi %2, $ac1\n\t"
  18         "mtlo %3, $ac1\n\t"
  19         "extpdpv %0, $ac1, %4\n\t"
  20         "rddsp %1\n\t"
  21         : "=r"(rt), "+r"(dsp)
  22         : "r"(ach), "r"(acl), "r"(rs)
  23        );
  24    pos =  dsp & 0x3F;
  25    efi = (dsp >> 14) & 0x01;
  26    assert(pos == 3);
  27    assert(efi == 0);
  28    assert(result == rt);
  29
  30    ach = 0x05;
  31    acl = 0xB4CB;
  32    dsp = 0x01;
  33
  34    __asm
  35        ("wrdsp %1, 0x01\n\t"
  36         "mthi %2, $ac1\n\t"
  37         "mtlo %3, $ac1\n\t"
  38         "extpdpv %0, $ac1, %4\n\t"
  39         "rddsp %1\n\t"
  40         : "=r"(rt), "+r"(dsp)
  41         : "r"(ach), "r"(acl), "r"(rs)
  42        );
  43    efi = (dsp >> 14) & 0x01;
  44    assert(efi == 1);
  45
  46    return 0;
  47}
  48