1 2 #include <stdio.h> 3 #include <stdlib.h> 4 5 void do_fstenv ( void* p ) 6 { 7 asm("movl 8(%esp), %eax ; fstenv (%eax)"); 8 } 9 10 void do_fldenv ( void* p ) 11 { 12 asm("movl 8(%esp), %eax ; fldenv (%eax)"); 13 } 14 15 int main ( void ) 16 { 17 int i; 18 unsigned short* buf = malloc(14*sizeof(short)); 19 for (i = 0; i < 14; i++) 20 buf[i] = i; 21 buf[0] = 0x037f; 22 23 do_fldenv(buf); 24 do_fstenv(buf); 25 for (i = 0; i < 14; i++) { 26 printf("%04x ", buf[i]); 27 if (i > 0 && ((i % 12) == 11)) 28 printf("\n"); 29 } 30 printf("\n"); 31 return 0; 32 } 33
