From d296c4e1f9298c536291136ac1847fa8897819b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Revol?= <revol@free.fr>
Date: Sat, 19 Jan 2008 02:11:46 +0000
Subject: [PATCH] Fixed swapping functions. BFS now validates the superblock
 and the boot menu now lists the image if I force checking for kernel_x86. \o/

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23626 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/system/libroot/os/arch/m68k/byteorder.S | 36 +++++++++++----------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/src/system/libroot/os/arch/m68k/byteorder.S b/src/system/libroot/os/arch/m68k/byteorder.S
index fa0d6af5be..5feb579572 100644
--- a/src/system/libroot/os/arch/m68k/byteorder.S
+++ b/src/system/libroot/os/arch/m68k/byteorder.S
@@ -11,9 +11,12 @@
  */
 FUNCTION(__swap_int16):
 		moveq.l	#0,%d0
-		move.b	(5,%a7),%d0
+		/* 32-bit aligned stack! */
+		move.l	(4,%a7),%d1
+		move.b	%d1,%d0
+		lsr.w	#8,%d1
 		lsl.w	#8,%d0
-		move.b	(4,%a7),%d0
+		move.b	%d1,%d0
 		rts
 
 
@@ -22,11 +25,11 @@ FUNCTION(__swap_int16):
 FUNCTION(__swap_int32):
 /*		moveq.l	#0,%d0*/
 		move.b	(7,%a7),%d0
-		lsl.w	#8,%d0
+		lsl.l	#8,%d0
 		move.b	(6,%a7),%d0
-		lsl.w	#8,%d0
+		lsl.l	#8,%d0
 		move.b	(5,%a7),%d0
-		lsl.w	#8,%d0
+		lsl.l	#8,%d0
 		move.b	(4,%a7),%d0
 		rts
 
@@ -35,22 +38,21 @@ FUNCTION(__swap_int32):
  */
 FUNCTION(__swap_int64):
 /*		moveq.l	#0,%d0*/
-		move.b	(7,%a7),%d0
-		lsl.w	#8,%d0
-		move.b	(6,%a7),%d0
-		lsl.w	#8,%d0
-		move.b	(5,%a7),%d0
-		lsl.w	#8,%d0
-		move.b	(4,%a7),%d0
-		move.l	%d0,(%a0)
+		move.b	(7,%a7),%d1
+		lsl.l	#8,%d1
+		move.b	(6,%a7),%d1
+		lsl.l	#8,%d1
+		move.b	(5,%a7),%d1
+		lsl.l	#8,%d1
+		move.b	(4,%a7),%d1
+		/**/
 		move.b	(11,%a7),%d0
-		lsl.w	#8,%d0
+		lsl.l	#8,%d0
 		move.b	(10,%a7),%d0
-		lsl.w	#8,%d0
+		lsl.l	#8,%d0
 		move.b	(9,%a7),%d0
-		lsl.w	#8,%d0
+		lsl.l	#8,%d0
 		move.b	(8,%a7),%d0
-		move.l	%d0,(4,%a0)
 		rts