ScrapExplorer - main.s
Home / arch / x64 / linux / file_writing
Lines: 1 | Size: 1051 bytes
[Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)] 
[FILE BEGIN]
1; SPDX-License-Identifier: GPL-3.0
2; file_writing
3;
4; main.asm
5;
6; Hello world in assembly for x86_64 Linux
7;
8; Many thanks to https://syscall.sh/, Linus Torvalds and kernel developers.
9;
10; COPYRIGHT NOTICE
11; Copyright (C) 2024-2025 0x4248 and contributors
12; Redistribution and use in source and binary forms, with or without
13; modification, are permitted provided that the license is not changed.
14; 
15; This software is free and open source. Licensed under the GNU general
16; public license version 3.0 as published by the Free Software Foundation.
17
18; TODO: Still a work in progress.
19
20; Syscalls:
21; 2 - open
22; 1 - write
23
24global _start 
25section .text
26
27_start:
28	mov rax, 2			; open syscall
29	mov rdi, filename	; filename
30	mov rsi, 1			; O_WRONLY
31
32	syscall 			; Call the kernel
33
34	mov rdi, filename		; File descriptor
35	mov rax, 1			; write syscall
36	mov rsi, message	; Message
37
38	syscall 			; Call the kernel
39
40	mov rax, 60			; exit syscall
41	mov rdi, 0			; Set 0 on return
42
43	syscall 			; Call the kernel
44
45filename db 'file.txt', 0
46message db 'Hello, world!', 0
[FILE END]
(C) 2025 0x4248
(C) 2025 4248 Media and 4248 Systems, All part of 0x4248
See LICENCE files for more information. Not all files are by 0x4248 always check Licencing.