1
/* MN10300 Kernel GDB stub definitions
3
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4
* Written by David Howells (dhowells@redhat.com)
5
* - Derived from asm-mips/gdb-stub.h (c) 1995 Andreas Busse
7
* This program is free software; you can redistribute it and/or
8
* modify it under the terms of the GNU General Public Licence
9
* as published by the Free Software Foundation; either version
10
* 2 of the Licence, or (at your option) any later version.
12
#ifndef _ASM_GDB_STUB_H
13
#define _ASM_GDB_STUB_H
15
#include <asm/exceptions.h>
18
* register ID numbers in GDB remote protocol
21
#define GDB_REGID_PC 9
22
#define GDB_REGID_FP 7
23
#define GDB_REGID_SP 8
26
* virtual stack layout for the GDB exception handler
30
#define GDB_FR_D0 (0 * 4)
31
#define GDB_FR_D1 (1 * 4)
32
#define GDB_FR_D2 (2 * 4)
33
#define GDB_FR_D3 (3 * 4)
34
#define GDB_FR_A0 (4 * 4)
35
#define GDB_FR_A1 (5 * 4)
36
#define GDB_FR_A2 (6 * 4)
37
#define GDB_FR_A3 (7 * 4)
39
#define GDB_FR_SP (8 * 4)
40
#define GDB_FR_PC (9 * 4)
41
#define GDB_FR_MDR (10 * 4)
42
#define GDB_FR_EPSW (11 * 4)
43
#define GDB_FR_LIR (12 * 4)
44
#define GDB_FR_LAR (13 * 4)
45
#define GDB_FR_MDRQ (14 * 4)
47
#define GDB_FR_E0 (15 * 4)
48
#define GDB_FR_E1 (16 * 4)
49
#define GDB_FR_E2 (17 * 4)
50
#define GDB_FR_E3 (18 * 4)
51
#define GDB_FR_E4 (19 * 4)
52
#define GDB_FR_E5 (20 * 4)
53
#define GDB_FR_E6 (21 * 4)
54
#define GDB_FR_E7 (22 * 4)
56
#define GDB_FR_SSP (23 * 4)
57
#define GDB_FR_MSP (24 * 4)
58
#define GDB_FR_USP (25 * 4)
59
#define GDB_FR_MCRH (26 * 4)
60
#define GDB_FR_MCRL (27 * 4)
61
#define GDB_FR_MCVF (28 * 4)
63
#define GDB_FR_FPCR (29 * 4)
64
#define GDB_FR_DUMMY0 (30 * 4)
65
#define GDB_FR_DUMMY1 (31 * 4)
67
#define GDB_FR_FS0 (32 * 4)
69
#define GDB_FR_SIZE (NUMREGS * 4)
74
* This is the same as above, but for the high-level
75
* part of the GDB stub.
79
/* saved main processor registers */
80
u32 d0, d1, d2, d3, a0, a1, a2, a3;
81
u32 sp, pc, mdr, epsw, lir, lar, mdrq;
82
u32 e0, e1, e2, e3, e4, e5, e6, e7;
83
u32 ssp, msp, usp, mcrh, mcrl, mcvf;
85
/* saved floating point registers */
86
u32 fpcr, _dummy0, _dummy1;
87
u32 fs0, fs1, fs2, fs3, fs4, fs5, fs6, fs7;
88
u32 fs8, fs9, fs10, fs11, fs12, fs13, fs14, fs15;
89
u32 fs16, fs17, fs18, fs19, fs20, fs21, fs22, fs23;
90
u32 fs24, fs25, fs26, fs27, fs28, fs29, fs30, fs31;
96
extern void show_registers_only(struct pt_regs *regs);
98
extern asmlinkage void gdbstub_init(void);
99
extern asmlinkage void gdbstub_exit(int status);
100
extern asmlinkage void gdbstub_io_init(void);
101
extern asmlinkage void gdbstub_io_set_baud(unsigned baud);
102
extern asmlinkage int gdbstub_io_rx_char(unsigned char *_ch, int nonblock);
103
extern asmlinkage void gdbstub_io_tx_char(unsigned char ch);
104
extern asmlinkage void gdbstub_io_tx_flush(void);
106
extern asmlinkage void gdbstub_io_rx_handler(void);
107
extern asmlinkage void gdbstub_rx_irq(struct pt_regs *, enum exception_code);
108
extern asmlinkage int gdbstub_intercept(struct pt_regs *, enum exception_code);
109
extern asmlinkage void gdbstub_exception(struct pt_regs *, enum exception_code);
110
extern asmlinkage void __gdbstub_bug_trap(void);
111
extern asmlinkage void __gdbstub_pause(void);
113
#ifdef CONFIG_MN10300_CACHE_ENABLED
114
extern asmlinkage void gdbstub_purge_cache(void);
116
#define gdbstub_purge_cache() do {} while (0)
119
/* Used to prevent crashes in memory access */
120
extern asmlinkage int gdbstub_read_byte(const u8 *, u8 *);
121
extern asmlinkage int gdbstub_read_word(const u8 *, u8 *);
122
extern asmlinkage int gdbstub_read_dword(const u8 *, u8 *);
123
extern asmlinkage int gdbstub_write_byte(u32, u8 *);
124
extern asmlinkage int gdbstub_write_word(u32, u8 *);
125
extern asmlinkage int gdbstub_write_dword(u32, u8 *);
127
extern asmlinkage void gdbstub_read_byte_guard(void);
128
extern asmlinkage void gdbstub_read_byte_cont(void);
129
extern asmlinkage void gdbstub_read_word_guard(void);
130
extern asmlinkage void gdbstub_read_word_cont(void);
131
extern asmlinkage void gdbstub_read_dword_guard(void);
132
extern asmlinkage void gdbstub_read_dword_cont(void);
133
extern asmlinkage void gdbstub_write_byte_guard(void);
134
extern asmlinkage void gdbstub_write_byte_cont(void);
135
extern asmlinkage void gdbstub_write_word_guard(void);
136
extern asmlinkage void gdbstub_write_word_cont(void);
137
extern asmlinkage void gdbstub_write_dword_guard(void);
138
extern asmlinkage void gdbstub_write_dword_cont(void);
140
extern u8 gdbstub_rx_buffer[PAGE_SIZE];
141
extern u32 gdbstub_rx_inp;
142
extern u32 gdbstub_rx_outp;
143
extern u8 gdbstub_rx_overflow;
144
extern u8 gdbstub_busy;
145
extern u8 gdbstub_rx_unget;
147
#ifdef CONFIG_GDBSTUB_DEBUGGING
148
extern void gdbstub_printk(const char *fmt, ...)
149
__attribute__((format(printf, 1, 2)));
151
static inline __attribute__((format(printf, 1, 2)))
152
void gdbstub_printk(const char *fmt, ...)
157
#ifdef CONFIG_GDBSTUB_DEBUG_ENTRY
158
#define gdbstub_entry(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
160
#define gdbstub_entry(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
163
#ifdef CONFIG_GDBSTUB_DEBUG_PROTOCOL
164
#define gdbstub_proto(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
166
#define gdbstub_proto(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
169
#ifdef CONFIG_GDBSTUB_DEBUG_IO
170
#define gdbstub_io(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
172
#define gdbstub_io(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
175
#ifdef CONFIG_GDBSTUB_DEBUG_BREAKPOINT
176
#define gdbstub_bkpt(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
178
#define gdbstub_bkpt(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
181
#endif /* !__ASSEMBLY__ */
182
#endif /* _ASM_GDB_STUB_H */