globaltest.c

*****汇编语言程序设计 源代码*****

/* globaltest.c - An example of using C variables */
#include <stdio.h>

int a = 10;
int b = 20;
int result;

int main()
{
        asm ( "pusha\n\t"
              "movl a, %eax\n\t"
              "movl b, %ebx\n\t"
              "imull %ebx, %eax\n\t"
              "movl %eax, result\n\t"
              "popa");
        printf("the answer is %d\n", result);
        return 0;
}