本文介绍了Printf 带气体组件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我不知道为什么如果字符串末尾缺少 \n(LF - newline)，我无法在 GAS 程序集中用 printf 打印任何内容.如果我把换行符 \n 打印出来，但如果我删除 \n 行不打印.谁能告诉我为什么?
I don't know why I cannot print anything with printf in GAS assembly if \n(LF - newline) is missing at the end of the string. If I put the newline char \n the line prints, but if I remove \n the line doesn't print. Can someone tell me why?
.extern printf
.section .data
hello:
.string "Hello!" # doesn't print this way when \n is missing
.section .text
.globl _start
_start:
nop
movl $hello, %edi
movl $0, %eax
call printf
_end:
movq $60, %rax #use the _exit syscall
movq $0, %rdi #return error code 0
syscall #make syscall
推荐答案
pushl %ebp
lea hello, %edi
movl %esp, %ebp /*<----*/
call printf
popl %ebp
这篇关于Printf 带气体组件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！