c.c

来自「geekos 0.3.0简单的操作系统」· C语言 代码 · 共 23 行

/*
 * A test program for GeekOS user mode
 */

#include <conio.h>
#include <geekos/syscall.h>

int main(int argc, char **argv)
{
    int badsys = -1, rc;

    Print_String("I am the c program\n");

    /* Make an illegal system call */
    __asm__ __volatile__ (
	SYSCALL
	: "=a" (rc)
	: "a" (badsys)
    );

    return 0;
}