From e42b567df7990dd6119d10eb9aa1375ee5a57cd9 Mon Sep 17 00:00:00 2001
From: Jan-Erik Rediger <janerik@rediger.net>
Date: Fri, 15 Sep 2023 11:55:12 +0000
Subject: [PATCH] some comment for 0x00

---
 0x00.asm | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/0x00.asm b/0x00.asm
index 403a8e4..6754200 100644
--- a/0x00.asm
+++ b/0x00.asm
@@ -2,15 +2,17 @@
 	SECTION .text
 	global main
 
+; all the different ways to set registers to 0.
+
 main:
-	xor eax, eax
-	lea rbx, [0]
+	xor eax, eax ; xor with itself
+	lea rbx, [0] ; load effective address into rbx
 	; ecx usually starts with a high value, loop decrements this
 	; so this makes it all a bit faster
 	mov ecx, 10
-	loop $
-	mov rdx, 0
-	and esi, 0
-	sub edi, edi
-	push 0
-	pop rbp
+	loop $ ; loop until ecx hits 0. `$` is this instruction.
+	mov rdx, 0 ; move 0 into rdx
+	and esi, 0 ; bitwise-and esi with 0
+	sub edi, edi ; substract from itself
+	push 0 ; put 0 on the stack
+	pop rbp ; pop stack into rbp