From 0190a14bd88287c033fb00b6d4f467d41124cd1b Mon Sep 17 00:00:00 2001
From: Daniel Svitan <daniel.svitan.team7274dev@gmail.com>
Date: Wed, 7 May 2025 20:38:17 +0200
Subject: [PATCH] :truck: Moves from gnu assembler to netwide assembler

---
 build.sh |  2 +-
 main.s   | 48 ++++++++++++++++++++++++++++++++++--------------
 2 files changed, 35 insertions(+), 15 deletions(-)

diff --git a/build.sh b/build.sh
index 0feabc4..92e137e 100755
--- a/build.sh
+++ b/build.sh
@@ -2,6 +2,6 @@
 
 gcc main.c -o a.out
 
-gcc -c main.s -o b.o
+nasm -f elf64 main.s -o b.o
 ld b.o -o b.out
 rm b.o
diff --git a/main.s b/main.s
index 6f31575..63967a3 100644
--- a/main.s
+++ b/main.s
@@ -1,18 +1,38 @@
-.global	_start
+SYS_EXIT equ 0x1
+SYS_READ equ 0x3
+SYS_WRITE equ 0x4
+
+STDIN equ 0x0
+STDOUT equ 0x1
+STDERR equ 0x2
+
+section .data
+	inputMsg db "> ", 0x0
+	inputLen equ $ - inputMsg
+
+section .bss
+	char resb 1
+	exitCode resb 1
+
+section .text
+	global _start
 
-.text
 _start:
-	mov $1, %rax
-	mov $1, %rdi
-	mov $msg, %rsi
-	mov $len, %rdx
-	syscall
+	mov r8, 0
+	mov [exitCode], r8
 
-	mov $60, %rax
-	mov $0, %rdi
-	syscall
+	mov rax, SYS_READ
+	mov rbx, STDIN
+	mov rcx, input
+	mov rdx, 64
+	int 0x80
 
-.data
-msg:
-	.ascii "Hello, world!\n"
-	len = . - msg
+	;mov rax, SYS_WRITE
+	;mov rbx, STDOUT
+	;mov rcx, inputMsg
+	;mov rdx, inputLen
+	;int 0x80
+
+	mov rax, SYS_EXIT
+	mov rbx, [exitCode]
+	int 0x80