MINIX2.0操作系统源码,是Linux的前身,世界上最小的32位操作系统

				!	strnlen()					Author: Kees J. Bot
				!								27 Jan 1994
				.sect .text; .sect .rom; .sect .data; .sect .bss
				
				! size_t strnlen(const char *s, size_t n)
				!	Return the length of a string.
				!
				.sect .text
				.define _strnlen
				_strnlen:
					mov	bx, sp
					mov	cx, 4(bx)	! Maximum length
					jmp	__strnlen	! Common code