From: H. Peter Anvin <hpa@linux.intel.com>
Date: Mon, 30 Mar 2009 23:03:30 +0000 (-0700)
Subject: Fix the new kernel command-line parser
X-Git-Tag: syslinux-3.74-pre14^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1cb06f94c9c1525975254ed41942098d7a741840;p=profile%2Fivi%2Fsyslinux.git

Fix the new kernel command-line parser

Impact: bug fix

We were incorrectly looking at [ds:di] instead of [es:di] for
verifying that a command was properly terminated.  Fix.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---

diff --git a/core/runkernel.inc b/core/runkernel.inc
index b3968db..d068aa5 100644
--- a/core/runkernel.inc
+++ b/core/runkernel.inc
@@ -126,9 +126,10 @@ parse_cmdline:
 
 		; This either needs to have been an option with parameter,
 		; or be followed by EOL/whitespace
-		cmp byte [di-1],'='
+		mov ax,[es:di-1]		; AL = last chr; AH = following
+		cmp al,'='
 		je .is_match
-		cmp byte [di],' '
+		cmp ah,' '
 		ja .no_match
 .is_match:
 		pop ax				; Drop option pointer on stack