none/tests/mips64/fpu_control_word.c

   1 #include <stdio.h>
   2
   3 #if defined(__mips_hard_float)
   4 #define TESTINST_CFC1_CTC1(N)          \
   5 {                                      \
   6    unsigned int out = 0;               \
   7    __asm__ __volatile__(               \
   8       "move $t0, %1"   "\n\t"          \
   9       "ctc1 $t0, $31"  "\n\t"          \
  10       "cfc1 $t1, $31"  "\n\t"          \
  11       "move %0,  $t1"  "\n\t"          \
  12       : "=r" (out)                     \
  13       : "r" (N)                        \
  14       : "t0", "t1"                     \
  15    );                                  \
  16    printf("out=%d, in=%d\n", out, N);  \
  17 }
  18 #else
  19 #define TESTINST_CFC1_CTC1(N)
  20 #endif
  21
  22 int main()
  23 {
  24    int i;
  25    printf("--- CTC1, CFC1 ---\n");
  26    for (i = 0; i < 1024; i++) {
  27       TESTINST_CFC1_CTC1(i);
  28    }
  29
  30    return 0;
  31 }