VEX/test/mxcsr.c

   1
   2 #include <stdio.h>
   3
   4 void mxcsr_default ( void )
   5 {
   6   asm(" pushl $0x1F80 ; ldmxcsr (%esp) ; addl $4, %esp");
   7 }
   8
   9 void mxcsr_exns ( void )
  10 {
  11   asm(" pushl $0x1F00 ; ldmxcsr (%esp) ; addl $4, %esp");
  12 }
  13
  14 /* PIII doesn't have DAZ, so this segfaults (!) on PIII. */a
  15 void mxcsr_daz ( void )
  16 {
  17   asm(" pushl $0x1FC0 ; ldmxcsr (%esp) ; addl $4, %esp");
  18 }
  19
  20 void mxcsr_fz ( void )
  21 {
  22   asm(" pushl $0x9F80 ; ldmxcsr (%esp) ; addl $4, %esp");
  23 }
  24
  25
  26 int main ( void )
  27 {
  28    printf("default\n");
  29    mxcsr_default();
  30    printf("\n");
  31
  32    printf("exns\n");
  33    mxcsr_exns();
  34    printf("\n");
  35
  36    printf("daz\n");
  37    mxcsr_daz();
  38    printf("\n");
  39
  40    printf("fz\n");
  41    mxcsr_fz();
  42    printf("\n");
  43
  44    return 0;
  45 }