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

   1 #include<stdio.h>
   2 #include<assert.h>
   3
   4 int main()
   5 {
   6     int rt, rs, ach, acl, dsp;
   7     int result;
   8
   9     rs = 0x03;
  10     ach = 0x05;
  11     acl = 0xB4CB;
  12     result = 0x7FFFFFFF;
  13     __asm
  14         ("wrdsp %1, 0x01\n\t"
  15          "mthi %3, $ac1\n\t"
  16          "mtlo %4, $ac1\n\t"
  17          "extrv_rs.w %0, $ac1, %2\n\t"
  18          "rddsp %1\n\t"
  19          : "=r"(rt), "+r"(dsp)
  20          : "r"(rs), "r"(ach), "r"(acl)
  21         );
  22     dsp = (dsp >> 23) & 0x01;
  23     assert(dsp == 1);
  24     assert(result == rt);
  25
  26     /* Clear dspcontrol */
  27     dsp = 0;
  28     __asm
  29         ("wrdsp %0\n\t"
  30          :
  31          : "r"(dsp)
  32         );
  33
  34     rs = 0x04;
  35     ach = 0x01;
  36     acl = 0xB4CB;
  37     result = 0x10000B4D;
  38     __asm
  39         ("wrdsp %1, 0x01\n\t"
  40          "mthi %3, $ac1\n\t"
  41          "mtlo %4, $ac1\n\t"
  42          "extrv_rs.w %0, $ac1, %2\n\t"
  43          "rddsp %1\n\t"
  44          : "=r"(rt), "+r"(dsp)
  45          : "r"(rs), "r"(ach), "r"(acl)
  46         );
  47     dsp = (dsp >> 23) & 0x01;
  48     assert(dsp == 0);
  49     assert(result == rt);
  50
  51     /* Clear dspcontrol */
  52     dsp = 0;
  53     __asm
  54         ("wrdsp %0\n\t"
  55          :
  56          : "r"(dsp)
  57         );
  58
  59     rs = 0x1F;
  60     ach = 0x3fffffff;
  61     acl = 0x2bcdef01;
  62     result = 0x7ffffffe;
  63     __asm
  64         ("wrdsp %1, 0x01\n\t"
  65          "mthi %3, $ac1\n\t"
  66          "mtlo %4, $ac1\n\t"
  67          "extrv_rs.w %0, $ac1, %2\n\t"
  68          "rddsp %1\n\t"
  69          : "=r"(rt), "+r"(dsp)
  70          : "r"(rs), "r"(ach), "r"(acl)
  71         );
  72     dsp = (dsp >> 23) & 0x01;
  73     assert(dsp == 0);
  74     assert(result == rt);
  75
  76     return 0;
  77 }