At Assembly for Linux and Mac (sys_write)

Write () in C: (SYS_WRITE.C)

#include <stdio.h>int main (void) {    printf ("Hello landpack\n " );     return 0 ;}

Write () in/T for Linux: (SYS_WRITE.S)

. Section. Data_data:. ASCII"Hello landpack\n"len =.-_data.section. Text.globl _start_start:MOVL $4,%eax #for write Movl $_data,%ecx #The address of data movl $len,%edx #The len O F String MOVL $0,%ebx #exit with0        int$0x80 MOVL $1,%eax #sys_exit MOVL $0,%ebx #exit with0        int$0x80

Write () in/T for Mac: (SYS_WRITE.S):

. Globl _main _main:     pushq   %rbp    #movq   %rsp,   %rbp    leaq _data    (%rip),%rdi    callq   _puts    Xorl    %eax,   %eax    popq    %rbp    ret  . Section    _text,_cstring, Cstring_literals_data:    . ASCII  "Hello landpack" 

At Assembly for Linux and Mac (sys_write)