1/* Kernel debugger for MN10300
2 *
3 * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#ifndef _ASM_KGDB_H
13#define _ASM_KGDB_H
14
15/*
16 * BUFMAX defines the maximum number of characters in inbound/outbound
17 * buffers at least NUMREGBYTES*2 are needed for register packets
18 * Longer buffer is needed to list all threads
19 */
20#define BUFMAX			1024
21
22/*
23 * Note that this register image is in a different order than the register
24 * image that Linux produces at interrupt time.
25 */
26enum regnames {
27	GDB_FR_D0		= 0,
28	GDB_FR_D1		= 1,
29	GDB_FR_D2		= 2,
30	GDB_FR_D3		= 3,
31	GDB_FR_A0		= 4,
32	GDB_FR_A1		= 5,
33	GDB_FR_A2		= 6,
34	GDB_FR_A3		= 7,
35
36	GDB_FR_SP		= 8,
37	GDB_FR_PC		= 9,
38	GDB_FR_MDR		= 10,
39	GDB_FR_EPSW		= 11,
40	GDB_FR_LIR		= 12,
41	GDB_FR_LAR		= 13,
42	GDB_FR_MDRQ		= 14,
43
44	GDB_FR_E0		= 15,
45	GDB_FR_E1		= 16,
46	GDB_FR_E2		= 17,
47	GDB_FR_E3		= 18,
48	GDB_FR_E4		= 19,
49	GDB_FR_E5		= 20,
50	GDB_FR_E6		= 21,
51	GDB_FR_E7		= 22,
52
53	GDB_FR_SSP		= 23,
54	GDB_FR_MSP		= 24,
55	GDB_FR_USP		= 25,
56	GDB_FR_MCRH		= 26,
57	GDB_FR_MCRL		= 27,
58	GDB_FR_MCVF		= 28,
59
60	GDB_FR_FPCR		= 29,
61	GDB_FR_DUMMY0		= 30,
62	GDB_FR_DUMMY1		= 31,
63
64	GDB_FR_FS0		= 32,
65
66	GDB_FR_SIZE		= 64,
67};
68
69#define GDB_ORIG_D0		41
70#define NUMREGBYTES		(GDB_FR_SIZE*4)
71
72static inline void arch_kgdb_breakpoint(void)
73{
74	asm(".globl __arch_kgdb_breakpoint; __arch_kgdb_breakpoint: break");
75}
76extern u8 __arch_kgdb_breakpoint;
77
78#define BREAK_INSTR_SIZE	1
79#define CACHE_FLUSH_IS_SAFE	1
80
81#endif /* _ASM_KGDB_H */
82