1
/* gdb-stub.h: FRV GDB stub
3
* Copyright (C) 2003 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 License
9
* as published by the Free Software Foundation; either version
10
* 2 of the License, or (at your option) any later version.
12
#ifndef __ASM_GDB_STUB_H
13
#define __ASM_GDB_STUB_H
15
#undef GDBSTUB_DEBUG_IO
16
#undef GDBSTUB_DEBUG_PROTOCOL
18
#include <asm/ptrace.h>
21
* important register numbers in GDB protocol
22
* - GR0, GR1, GR2, GR3, GR4, GR5, GR6, GR7,
23
* - GR8, GR9, GR10, GR11, GR12, GR13, GR14, GR15,
24
* - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23,
25
* - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31,
26
* - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39,
27
* - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47,
28
* - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55,
29
* - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63,
30
* - FR0, FR1, FR2, FR3, FR4, FR5, FR6, FR7,
31
* - FR8, FR9, FR10, FR11, FR12, FR13, FR14, FR15,
32
* - FR16, FR17, FR18, FR19, FR20, FR21, FR22, FR23,
33
* - FR24, FR25, FR26, FR27, FR28, FR29, FR30, FR31,
34
* - FR32, FR33, FR34, FR35, FR36, FR37, FR38, FR39,
35
* - FR40, FR41, FR42, FR43, FR44, FR45, FR46, FR47,
36
* - FR48, FR49, FR50, FR51, FR52, FR53, FR54, FR55,
37
* - FR56, FR57, FR58, FR59, FR60, FR61, FR62, FR63,
38
* - PC, PSR, CCR, CCCR,
39
* - _X132, _X133, _X134
40
* - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3,
41
* - SCR0, SCR1, SCR2, SCR3,
45
* - ACC0, ACC1, ACC2, ACC3, ACC4, ACC5, ACC6, ACC7,
46
* - ACCG0123, ACCG4567,
51
#define GDB_REG_GR(N) (N)
52
#define GDB_REG_FR(N) (64+(N))
53
#define GDB_REG_PC 128
54
#define GDB_REG_PSR 129
55
#define GDB_REG_CCR 130
56
#define GDB_REG_CCCR 131
57
#define GDB_REG_TBR 135
58
#define GDB_REG_BRR 136
59
#define GDB_REG_DBAR(N) (137+(N))
60
#define GDB_REG_SCR(N) (141+(N))
61
#define GDB_REG_LR 145
62
#define GDB_REG_LCR 146
63
#define GDB_REG_FSR0 149
64
#define GDB_REG_ACC(N) (150+(N))
65
#define GDB_REG_ACCG(N) (158+(N)/4)
66
#define GDB_REG_MSR(N) (160+(N))
67
#define GDB_REG_GNER(N) (162+(N))
68
#define GDB_REG_FNER(N) (164+(N))
70
#define GDB_REG_SP GDB_REG_GR(1)
71
#define GDB_REG_FP GDB_REG_GR(2)
73
#ifndef _LANGUAGE_ASSEMBLY
78
extern void show_registers_only(struct pt_regs *regs);
80
extern void gdbstub_init(void);
81
extern void gdbstub(int type);
82
extern void gdbstub_exit(int status);
84
extern void gdbstub_io_init(void);
85
extern void gdbstub_set_baud(unsigned baud);
86
extern int gdbstub_rx_char(unsigned char *_ch, int nonblock);
87
extern void gdbstub_tx_char(unsigned char ch);
88
extern void gdbstub_tx_flush(void);
89
extern void gdbstub_do_rx(void);
91
extern asmlinkage void __debug_stub_init_break(void);
92
extern asmlinkage void __break_hijack_kernel_event(void);
93
extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
95
extern asmlinkage void gdbstub_rx_handler(void);
96
extern asmlinkage void gdbstub_rx_irq(void);
97
extern asmlinkage void gdbstub_intercept(void);
99
extern uint32_t __entry_usertrap_table[];
100
extern uint32_t __entry_kerneltrap_table[];
102
extern volatile u8 gdbstub_rx_buffer[PAGE_SIZE];
103
extern volatile u32 gdbstub_rx_inp;
104
extern volatile u32 gdbstub_rx_outp;
105
extern volatile u8 gdbstub_rx_overflow;
106
extern u8 gdbstub_rx_unget;
108
extern void gdbstub_printk(const char *fmt, ...);
109
extern void debug_to_serial(const char *p, int n);
110
extern void console_set_baud(unsigned baud);
112
#ifdef GDBSTUB_DEBUG_IO
113
#define gdbstub_io(FMT,...) gdbstub_printk(FMT, ##__VA_ARGS__)
115
#define gdbstub_io(FMT,...) ({ 0; })
118
#ifdef GDBSTUB_DEBUG_PROTOCOL
119
#define gdbstub_proto(FMT,...) gdbstub_printk(FMT,##__VA_ARGS__)
121
#define gdbstub_proto(FMT,...) ({ 0; })
125
* we dedicate GR31 to keeping a pointer to the gdbstub exception frame
126
* - gr31 is destroyed on entry to the gdbstub if !MMU
127
* - gr31 is saved in scr3 on entry to the gdbstub if in !MMU
129
register struct frv_frame0 *__debug_frame0 asm("gr31");
131
#define __debug_frame (&__debug_frame0->regs)
132
#define __debug_user_context (&__debug_frame0->uc)
133
#define __debug_regs (&__debug_frame0->debug)
134
#define __debug_reg(X) ((unsigned long *) ((unsigned long) &__debug_frame0 + (X)))
136
struct frv_debug_status {
143
extern struct frv_debug_status __debug_status;
145
#endif /* _LANGUAGE_ASSEMBLY */
146
#endif /* __ASM_GDB_STUB_H */