none/tests/mips32/test_fcsr.c

   1 #include <stdio.h>
   2
   3 int main ()
   4 {
   5    int out [] = {0, 0};
   6    unsigned long long in  [] = {0x405EE0A3D70A3D71ULL, 0x3FF0000000000000ULL};
   7    __asm__ volatile("cfc1       $a1,   $31"         "\n\t"
   8                     "ldc1       $f0,   0(%0)"       "\n\t"
   9                     "ctc1       $zero, $31"         "\n\t"
  10                     "round.w.d  $f0,   $f0"         "\n\t"
  11                     "cfc1       $a2,   $31"         "\n\t"
  12                     "sw         $a2,   0(%1)"       "\n\t"
  13                     "ldc1       $f0,   8(%0)"       "\n\t"
  14                     "ctc1       $zero, $31"         "\n\t"
  15                     "round.w.d  $f0,   $f0"         "\n\t"
  16                     "cfc1       $a2,   $31"         "\n\t"
  17                     "sw         $a2,   4(%1)"       "\n\t"
  18                     "ctc1       $a1,   $31"         "\n\t"
  19                     :
  20                     : "r" (in), "r" (out)
  21                     : "a1", "a2", "t0", "$f0", "$f1"
  22                    );
  23    printf("FCSR::1: 0x%x, 2: 0x%x\n", out[0], out[1]);
  24    return 0;
  25 }