From: Gene Cumm <gene.cumm@gmail.com>
Date: Tue, 21 Dec 2010 01:24:29 +0000 (-0500)
Subject: core/diskstart.inc: Wrap INT13h in xint13 to preserve ES
X-Git-Tag: syslinux-4.04-pre4~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d8cc5332f879f42bd997f0ff0ff4a36cfc9b7a5d;p=platform%2Fupstream%2Fsyslinux.git

core/diskstart.inc: Wrap INT13h in xint13 to preserve ES

Sometimes INT13h AH08h kills ES to return info about a "floppy" (since
an unpartitioned HDD might look like a floppy).  Also, change to tabs
on previous line.
---

diff --git a/core/diskstart.inc b/core/diskstart.inc
index 3fc20e2..ac34cad 100644
--- a/core/diskstart.inc
+++ b/core/diskstart.inc
@@ -420,8 +420,10 @@ writestr_early:
 ; INT 13h wrapper function
 ;
 xint13:
-                mov dl,[DriveNumber]
+		mov dl,[DriveNumber]
+		push es		; ES destroyed by INT 13h AH 08h
 		int 13h
+		pop es
 		ret
 
 ;