From d058ad9d31b94e5c8aee416cd3e3062bf2819469 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=A1s=20A=2E=20Ortega?=
 <deathsbreed@themusicinnoise.net>
Date: Sun, 18 Sep 2016 21:06:35 +0200
Subject: [PATCH] Optimized the code a bit.

---
 src/helloworld.asm | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/helloworld.asm b/src/helloworld.asm
index 7c3e3d3..7c3727b 100644
--- a/src/helloworld.asm
+++ b/src/helloworld.asm
@@ -1,6 +1,8 @@
 .section .data
-    hello:
-        .ascii "Hello, World.\n"    # the string
+hello:
+    .ascii "Hello, World!\n"    # the string
+hello_end:
+.equ hello_len, hello_end - hello
 
 .section .text
     .global _start
@@ -9,9 +11,9 @@ _start:
     mov $1, %rax                    # Define write syscall
     mov $1, %rdi                    # Define stdout
     mov $hello, %rsi                # Give string
-    mov $14, %rdx                   # Give size of the string
+    mov $hello_len, %rdx                   # Give size of the string
     syscall                         # Call the kernel to do work for us
 
     mov $60, %rax                   # Define exit syscall
-    xor %rdi, %rdi                  # Give return value
+    mov $0, %rdi                    # Give return value
     syscall                         # Call the kernel to do work for us