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 */
26 enum 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
arch_kgdb_breakpoint(void)72 static inline void arch_kgdb_breakpoint(void)
73 {
74 asm(".globl __arch_kgdb_breakpoint; __arch_kgdb_breakpoint: break");
75 }
76 extern 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