tests/tcg/mips/mips32-dsp/extrv_s_h.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     ach = 0x05;
  10     acl = 0xB4CB;
  11     dsp = 0x07;
  12     rs  = 0x03;
  13     result = 0x00007FFF;
  14
  15     __asm
  16         ("wrdsp %1, 0x01\n\t"
  17          "mthi %3, $ac1\n\t"
  18          "mtlo %4, $ac1\n\t"
  19          "extrv_s.h %0, $ac1, %2\n\t"
  20          "rddsp %1\n\t"
  21          : "=r"(rt), "+r"(dsp)
  22          : "r"(rs), "r"(ach), "r"(acl)
  23         );
  24     dsp = (dsp >> 23) & 0x01;
  25     assert(dsp == 1);
  26     assert(result == rt);
  27
  28     rs = 0x08;
  29     ach = 0xffffffff;
  30     acl = 0x12344321;
  31     result = 0xFFFF8000;
  32     __asm
  33         ("wrdsp %1, 0x01\n\t"
  34          "mthi %3, $ac1\n\t"
  35          "mtlo %4, $ac1\n\t"
  36          "extrv_s.h %0, $ac1, %2\n\t"
  37          "rddsp %1\n\t"
  38          : "=r"(rt), "+r"(dsp)
  39          : "r"(rs), "r"(ach), "r"(acl)
  40         );
  41     dsp = (dsp >> 23) & 0x01;
  42     assert(dsp == 1);
  43     assert(result == rt);
  44
  45     /* Clear dsp */
  46     dsp = 0;
  47     __asm
  48         ("wrdsp %0\n\t"
  49          :
  50          : "r"(dsp)
  51         );
  52
  53     rs = 0x04;
  54     ach = 0x00;
  55     acl = 0x4321;
  56     result = 0x432;
  57     __asm
  58         ("wrdsp %1, 0x01\n\t"
  59          "mthi %3, $ac1\n\t"
  60          "mtlo %4, $ac1\n\t"
  61          "extrv_s.h %0, $ac1, %2\n\t"
  62          "rddsp %1\n\t"
  63          : "=r"(rt), "+r"(dsp)
  64          : "r"(rs), "r"(ach), "r"(acl)
  65         );
  66     dsp = (dsp >> 23) & 0x01;
  67     assert(dsp == 0);
  68     assert(result == rt);
  69
  70     rs = 0x1C;
  71     ach = 0x123;
  72     acl = 0x87654321;
  73     result = 0x1238;
  74     __asm
  75         ("wrdsp %1, 0x01\n\t"
  76          "mthi %3, $ac1\n\t"
  77          "mtlo %4, $ac1\n\t"
  78          "extrv_s.h %0, $ac1, %2\n\t"
  79          "rddsp %1\n\t"
  80          : "=r"(rt), "+r"(dsp)
  81          : "r"(rs), "r"(ach), "r"(acl)
  82         );
  83     dsp = (dsp >> 23) & 0x01;
  84     assert(dsp == 0);
  85     assert(result == rt);
  86
  87     return 0;
  88 }