From: Ben Pfaff <blp@cs.stanford.edu>
Date: Wed, 14 Jun 2006 16:00:20 +0000 (+0000)
Subject: Add some comments.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fc645de2c1499c0069ba0bb76240a5d93c94717b;p=pintos-anon

Add some comments.
From chris@seberino.org.
---

diff --git a/src/threads/loader.S b/src/threads/loader.S
index ca79cdf..b7842d3 100644
--- a/src/threads/loader.S
+++ b/src/threads/loader.S
@@ -56,14 +56,16 @@
 #define CR0_PG 0x80000000      /* Paging. */
 #define CR0_WP 0x00010000      /* Write-Protect enable in kernel mode. */
 
-# Code runs in real mode, which is a 16-bit segment.
 
 .globl start
 start:
+	
+# Code runs in real mode, which is a 16-bit segment.
 	.code16
 
-# Disable interrupts.
-# String instructions go upward.
+# Disable interrupts, because we will not be prepared to handle them
+# in protected mode until much later.
+# String instructions go upward (e.g. for "rep stosl" below).
 
 	cli
 	cld