1 #include <stdio.h> 2 3 int 4 main (void) 5 { 6 long rcx = 0x200000005UL; 7 long rax = 5UL; 8 asm volatile ("1: addq $1, %0; loopnel 1b" : "+a" (rax), "+c" (rcx) : : "cc"); 9 printf ("%ld %ld\n", rax, rcx); 10 return 0; 11 } 12
