xref: /openbmc/linux/arch/sh/kernel/cpu/sh2a/ex.S (revision 799a545b)
1/*
2 * arch/sh/kernel/cpu/sh2a/ex.S
3 *
4 * The SH-2A exception vector table
5 *
6 * Copyright (C) 2008 Yoshinori Sato
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License.  See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12
13#include <linux/linkage.h>
14
15!
16! convert Exception Vector to Exception Number
17!
18
19! exception no 0 to 255
20exception_entry0:
21no	=	0
22	.rept	256
23	mov.l	r1,@-sp
24	bra	exception_trampoline0
25	mov	#no,r1
26no	=	no + 1
27	.endr
28exception_trampoline0:
29	mov.l	r0,@-sp
30	mov.l	1f,r0
31	extu.b	r1,r1
32	jmp	@r0
33	  extu.w	r1,r1
34
35	.align	2
361:	.long	exception_handler
37
38! exception no 256 to 511
39exception_entry1:
40no	=	0
41	.rept	256
42	mov.l	r1,@-sp
43	bra	exception_trampoline1
44	mov	#no,r1
45no	=	no + 1
46	.endr
47exception_trampoline1:
48	mov.l	r0,@-sp
49	extu.b	r1,r1
50	movi20	#0x100,r0
51	add	r0,r1
52	mov.l	1f,r0
53	jmp	@r0
54	  extu.w	r1,r1
55
56	.align	2
571:	.long	exception_handler
58
59	!
60! Exception Vector Base
61!
62	.align	2
63ENTRY(vbr_base)
64vector	=	0
65	.rept	256
66	.long	exception_entry0 + vector * 6
67vector	=	vector + 1
68	.endr
69vector	=	0
70	.rept	256
71	.long	exception_entry1 + vector * 6
72vector	=	vector + 1
73	.endr
74