From 92d1f05e9aabbb4c0ea3c9bb4263acd8062a6d99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Revol?= <revol@free.fr>
Date: Sun, 10 Oct 2010 11:05:05 +0000
Subject: [PATCH] Cleanup. Some more tries.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38918 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/system/boot/platform/amiga_m68k/stage1.S | 89 ++++++++------------
 1 file changed, 36 insertions(+), 53 deletions(-)

diff --git a/src/system/boot/platform/amiga_m68k/stage1.S b/src/system/boot/platform/amiga_m68k/stage1.S
index 096f709b7b..8cabb93951 100644
--- a/src/system/boot/platform/amiga_m68k/stage1.S
+++ b/src/system/boot/platform/amiga_m68k/stage1.S
@@ -61,7 +61,11 @@
 
 // AmigaDOS calls
 // exec.library
+#define _Supervisor				-0x1e
 #define _FindResident			-0x60
+#define _Alert					-0x6c
+#define _SuperState				-0x96
+#define _UserState				-0x9c
 #define _OldOpenLibrary         -0x198
 #define _CloseLibrary           -0x19e
 // dos.library
@@ -81,28 +85,30 @@
 
 _floppy_entry:
 	.ascii	"DOS"
+//	.ascii	"BFS"
 	.byte	0
 _floppy_checksum:
 	.long	0
 _floppy_osversion: // ??
+//_super_stack: // also used as a variable in the code
 	//.long	0x370
 	.long	0x09D5A859 // dos private ???
 
 _floppy_boot:
+
+	// we get an open IO request in A1
+
 	// seems like a6 is already set to ExecBase when called from the ROM ?
 	// copy it
 	move.l	4.w,%a6
 	lea		_execbase(%pc),%a2
 	move.l	%a6,(%a2)
 
+//	jsr		_SuperState(%a6)
+//	move.l	%d0,_super_stack
+
 
 
-	lea	dosname_boot(%pc),%a1
-	jsr	_FindResident(%a6)
-	lea	_dosbase(%pc),%a2
-	tst.l	%d0
-	beq.s	_floppy_err
-	move.l	%d0,(%a2)
 //	bra _continue
 
 /*
@@ -122,6 +128,9 @@ _loop_2:
 	bra		_loop_2
 */	
 
+	//lea _display_alert,%a5
+	//jsr _Supervisor(%a6)
+
 	jsr _display_alert
 
 
@@ -136,14 +145,35 @@ _loop_2:
 
 	tst.l	%d0
 	beq.s	_floppy_err
+
+
+
 _continue:
+	move.l	4.w,%a6
+
+
+	lea	dosname_boot(%pc),%a1
+	jsr	_FindResident(%a6)
+	lea	_dosbase(%pc),%a2
+	tst.l	%d0
+	beq.s	_floppy_err
+	move.l	%d0,(%a2)
+
+//	move.l	_super_stack,%d0
+//	jsr		_UserState(%a6)
+
 	move.l	_dosbase,%a0
 	move.l	0x16(%a0),%a0
+
 	moveq	#0,%d0
 
 	rts
 
 _floppy_err:
+//	move.l	4.w,%a6
+//	move.l	_super_stack,%d0
+//	jsr		_UserState(%a6)
+
 	moveq	#-1,%d0
 	rts
 
@@ -193,50 +223,3 @@ end_buff:
 // equ *-_floppy_entry
 	.dcb.b	(1024)-(end_buff-_floppy_entry),0
 
-#if 0
-//XXX: atari stuff here
-
-// NOTE: normal programs (.prg) run as user mode, 
-// while boot sector is chained in supervisor mode.
-// this means using Super(SUP_INQUIRE) we can know 
-// from the same entry point if we were run from boot code or prg.
-
-
-	//Pterm0
-	//move.w	#1,%d0
-	//trap	#1
-	//rts
-	
-	lea.l	str,%a0
-.loopt:
-	move.b	(%a0)+,%d0
-	beq	.strout
-	bsr	putc
-	bra	.loopt
-.strout:
-	//Pterm0
-	move.w	#1,%d0
-	trap	#1
-
-	rts
-	
-.loop:
-	move	#'.',%d0
-	bsr		putc
-	bra		.loop
-	rts
-
-/* prints the char in d0.b to the console */
-putc:
-	movem.l	%a0,-(%sp)
-	move.w	%d0,-(%sp)
-	move.w	#DEV_CON,-(%sp)	// DEV_CON
-	move.w	#3,-(%sp)	// Bconout
-	trap	#13
-	add.l	#6,%sp
-	movem.l	(%sp)+,%a0
-	rts
-str:
-	.ascii "Haiku!"
-	.byte 0
-#endif