linux下使用汇编语言编写hello world！程序

1、下载nasm安装包

#wget http://www.nasm.us/pub/nasm/releasebuilds/2.11.08/nasm-2.11.08.tar.gz

2、解压安装nasm

#tar -xzvf nasm-2.11.08.tar.gz

#cd nasm-2.11.08

#./configure

#make

#make install

3、编写hello.asm

section .data                           ;section declaration
msg     db      "Hello, world!",0xA     ;our dear string
len     equ     $ - msg                 ;length of our dear string
section .text                           ;section declaration
                       ;we must export the entry point to the ELF linker or
   global _start       ;loader. They conventionally recognize _start as their
                       ;entry point. Use ld -e foo to override the default.
_start:
;write our string to stdout
       mov     eax,4   ;system call number (sys_write)
       mov     ebx,1   ;first argument: file handle (stdout)
       mov     ecx,msg ;second argument: pointer to message to write
       mov     edx,len ;third argument: message length
       int     0x80    ;call kernel
;and exit
       mov     eax,1   ;system call number (sys_exit)
       xor     ebx,ebx ;first syscall argument: exit code
       int     0x80    ;call kernel

4、编译连接

#nasm -f elf64 hello.asm (linux是64位的，如果是32，请使用elf32)

#ld -s -o hello hello.o

#ls hello

hello

5、执行程序

#./hello

Hello, world!