signal.s

汇编语言程序的编写虽然有一定的难度,但是它是一门低级的语言,有很强的基础性作用,具有广泛的用途.

/	int signal ( int signal , sig_h handler )

	.globl	_signal
_signal:
	movl	4(%esp), %ecx
	movl	8(%esp), %edx
	movw	$0x7f0c, %ax
        int     $0x21
	cmpl	$-1, %eax
	jne	1f
	movl	$22, _errno
1:
        ret