Question

I m在使用玩具系统方面遇到麻烦,它从I32组件方案中呼吁采用关于含水层的系统。如何确定缓冲?

这是我迄今所做工作的相关部分:

    movl $(SYS_read), %eax
    movl $(STDIN), %ebx   
    movl BUFFADDR, %ecx  
    movl 2, %edx
    int $0x80   
    movl $eax, $ebp // number of read bytes

where SYS_read and STDIN are defined at the beginning. Where is the correct place to set up the buffer? (BUFFADDR in the pasted code).

Are there any I/O libraries for IA32 Assembler? Or is that the easiest way to read a value from Stdin? I couldn t find a working example performing such an operation, I hope someone can help.

Answer 1

“BUFFADDR”只是一些记忆区域的地址,而这个区域足以读取数据(就你而言是两个字塔)。你们基本上有两个地方可以从现在的脚步或跳跃那里获得记忆。对于一个小的缓冲,你也许可以把 st子(把 st点推到保留某些空间)分配给肥皂,见彩板系统电话。

Here s some details about stack frames (includes stuff about argument passing that you don t need yet, though): http://www.cs.mun.ca/~rod/winter2004/cs3724/notes/frame.html

If you want IO libraries, then pretty much by definition you don t want assembler. The IO library you re looking for is the C library.

友情链接