LXR qemu/tests/tcg/mips/mips32-dsp/extpdp.c

   1#include<stdio.h>
   2#include<assert.h>
   3
   4int main()
   5{
   6    int rt, ach, acl, dsp, pos, efi;
   7    int result;
   8
   9    ach = 0x05;
  10    acl = 0xB4CB;
  11    dsp = 0x07;
  12    result = 0x000C;
  13
  14    __asm
  15        ("wrdsp %1, 0x01\n\t"
  16         "mthi %2, $ac1\n\t"
  17         "mtlo %3, $ac1\n\t"
  18         "extpdp %0, $ac1, 0x03\n\t"
  19         "rddsp %1\n\t"
  20         : "=r"(rt), "+r"(dsp)
  21         : "r"(ach), "r"(acl)
  22        );
  23    pos =  dsp & 0x3F;
  24    efi = (dsp >> 14) & 0x01;
  25    assert(pos == 3);
  26    assert(efi == 0);
  27    assert(result == rt);
  28
  29    ach = 0x05;
  30    acl = 0xB4CB;
  31    dsp = 0x01;
  32
  33    __asm
  34        ("wrdsp %1, 0x01\n\t"
  35         "mthi %2, $ac1\n\t"
  36         "mtlo %3, $ac1\n\t"
  37         "extpdp %0, $ac1, 0x03\n\t"
  38         "rddsp %1\n\t"
  39         : "=r"(rt), "+r"(dsp)
  40         : "r"(ach), "r"(acl)
  41        );
  42    efi = (dsp >> 14) & 0x01;
  43    assert(efi == 1);
  44
  45
  46    ach = 0;
  47    acl = 0;
  48    dsp = 0;
  49    result = 0;
  50
  51    __asm
  52        ("wrdsp %1\n\t"
  53         "mthi %2, $ac1\n\t"
  54         "mtlo %3, $ac1\n\t"
  55         "extpdp %0, $ac1, 0x00\n\t"
  56         "rddsp %1\n\t"
  57         : "=r"(rt), "+r"(dsp)
  58         : "r"(ach), "r"(acl)
  59        );
  60    assert(dsp == 0x3F);
  61    assert(result == rt);
  62
  63    return 0;
  64}
  65