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

   1 #include<stdio.h>
   2 #include<assert.h>
   3
   4 int main()
   5 {
   6     int rt, ach, acl, dsp;
   7     int result;
   8
   9     ach = 0x05;
  10     acl = 0xB4CB;
  11     result = 0xA0001699;
  12     __asm
  13         ("mthi %2, $ac1\n\t"
  14          "mtlo %3, $ac1\n\t"
  15          "extr.w %0, $ac1, 0x03\n\t"
  16          "rddsp %1\n\t"
  17          : "=r"(rt), "=r"(dsp)
  18          : "r"(ach), "r"(acl)
  19         );
  20     dsp = (dsp >> 23) & 0x01;
  21     assert(dsp == 1);
  22     assert(result == rt);
  23
  24     /* Clear dspcontrol */
  25     dsp = 0;
  26     __asm
  27         ("wrdsp %0\n\t"
  28          :
  29          : "r"(dsp)
  30         );
  31
  32     ach = 0x01;
  33     acl = 0xB4CB;
  34     result = 0x10000B4C;
  35     __asm
  36         ("mthi %2, $ac1\n\t"
  37          "mtlo %3, $ac1\n\t"
  38          "extr.w %0, $ac1, 0x04\n\t"
  39          "rddsp %1\n\t"
  40          : "=r"(rt), "=r"(dsp)
  41          : "r"(ach), "r"(acl)
  42         );
  43     dsp = (dsp >> 23) & 0x01;
  44     assert(dsp == 0);
  45     assert(result == rt);
  46
  47     /* Clear dspcontrol */
  48     dsp = 0;
  49     __asm
  50         ("wrdsp %0\n\t"
  51          :
  52          : "r"(dsp)
  53         );
  54
  55     ach = 0x3fffffff;
  56     acl = 0x2bcdef01;
  57     result = 0x7ffffffe;
  58     __asm
  59         ("mthi %2, $ac1\n\t"
  60          "mtlo %3, $ac1\n\t"
  61          "extr.w %0, $ac1, 0x1F\n\t"
  62          "rddsp %1\n\t"
  63          : "=r"(rt), "=r"(dsp)
  64          : "r"(ach), "r"(acl)
  65         );
  66     dsp = (dsp >> 23) & 0x01;
  67     assert(dsp == 0);
  68     assert(result == rt);
  69
  70     /* Clear dspcontrol */
  71     dsp = 0;
  72     __asm
  73         ("wrdsp %0\n\t"
  74          :
  75          : "r"(dsp)
  76         );
  77
  78     ach = 0xFFFFFFFF;
  79     acl = 0xFFFFFFFF;
  80     result = 0xFFFFFFFF;
  81     __asm
  82         ("mthi %2, $ac1\n\t"
  83          "mtlo %3, $ac1\n\t"
  84          "extr.w %0, $ac1, 0x1F\n\t"
  85          "rddsp %1\n\t"
  86          : "=r"(rt), "=r"(dsp)
  87          : "r"(ach), "r"(acl)
  88          );
  89     dsp = (dsp >> 23) & 0x01;
  90     assert(dsp == 0);
  91     assert(result == rt);
  92
  93     return 0;
  94 }