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

   1 #include<stdio.h>
   2 #include<assert.h>
   3
   4 int 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 }