Hello assambler

scvalex (Alexandru Scvortov) — Wed, 02 May 2007 18:40:17 GMT

The canonical Hello World program in assambler.

Compile it with:
nasm -f elf hello.s
ld -s -o hello hello.o

Helloworld is a function. It uses the write system call to print to stdout (file descriptor 1).

This is written in NASM (Intel) syntax, hence it will not work with gas, tasm or masm. It was written for Linux. The details may vary on other platforms.

Download NASM for free at http://nasm.sourceforge.net/



section .data

  hello: db "Hello world!",10

  hellolen: equ $ - hello



section .text

  global _start



_start:

  call helloworld



  mov eax,1 ; start exit procedure

  mov ebx,0



  int 80h



helloworld:

  mov eax,4 ; 4 is the code for the write system call

  mov ebx,1 ; 1 is the fd for stdout

  mov ecx,hello ; the address of the string

  mov edx,hellolen ; the length of the string



  int 80h ; trigger an interrupt; this should be 21h for DOS



  ret

Mono - Hello World

whitetiger () — Mon, 12 Feb 2007 05:44:43 GMT

using System;

class HelloWorld
{
public static void Main()
{
Console.WriteLine("Hello World !!!");
}
}

C++ - Hello World

whitetiger () — Wed, 10 May 2006 02:14:20 GMT



/*

 * 

 * Semplice esempio di Hello World !!!

 */



#include 



using namespace std;



int main(int argc, char *argv[])

{

	cout << "Hello World !!!" << endl; // endl equivale ad un \n

	

	return 0;

}

DZone Snippets: helloworld code

Hello assambler

Mono - Hello World

C++ - Hello World