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

   1 #include<stdio.h>
   2 #include<assert.h>
   3
   4 int main()
   5 {
   6     int dsp_i, dsp_o;
   7     int ccond_i, outflag_i, efi_i, c_i, scount_i, pos_i;
   8     int ccond_o, outflag_o, efi_o, c_o, scount_o, pos_o;
   9
  10     ccond_i   = 0x000000BC;  /* 4 */
  11     outflag_i = 0x0000001B;  /* 3 */
  12     efi_i     = 0x00000001;  /* 5 */
  13     c_i       = 0x00000001;  /* 2 */
  14     scount_i  = 0x0000000F;  /* 1 */
  15     pos_i     = 0x0000000C;  /* 0 */
  16
  17     dsp_i = (ccond_i   << 24) | \
  18             (outflag_i << 16) | \
  19             (efi_i     << 14) | \
  20             (c_i       << 13) | \
  21             (scount_i  <<  7) | \
  22             pos_i;
  23
  24     __asm
  25         ("wrdsp %1, 0x3F\n\t"
  26          "rddsp %0, 0x3F\n\t"
  27          : "=r"(dsp_o)
  28          : "r"(dsp_i)
  29         );
  30
  31     ccond_o   = (dsp_o >> 24) & 0xFF;
  32     outflag_o = (dsp_o >> 16) & 0xFF;
  33     efi_o     = (dsp_o >> 14) & 0x01;
  34     c_o       = (dsp_o >> 14) & 0x01;
  35     scount_o  = (dsp_o >>  7) & 0x3F;
  36     pos_o     =  dsp_o & 0x1F;
  37
  38     assert(ccond_o   == (ccond_i & 0x0F));
  39     assert(outflag_o == outflag_i);
  40     assert(efi_o     == efi_i);
  41     assert(c_o       == c_i);
  42     assert(scount_o  == scount_i);
  43     assert(pos_o     == pos_i);
  44
  45     return 0;
  46 }