[net-next-2.6.git] / arch / mn10300 / include / asm / gdb-stub.h

/* MN10300 Kernel GDB stub definitions
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 * - Derived from asm-mips/gdb-stub.h (c) 1995 Andreas Busse
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#ifndef _ASM_GDB_STUB_H
#define _ASM_GDB_STUB_H

#include <asm/exceptions.h>

/*
 * register ID numbers in GDB remote protocol
 */

#define GDB_REGID_PC		9
#define GDB_REGID_FP		7
#define GDB_REGID_SP		8

/*
 * virtual stack layout for the GDB exception handler
 */
#define NUMREGS			64

#define GDB_FR_D0		(0 * 4)
#define GDB_FR_D1		(1 * 4)
#define GDB_FR_D2		(2 * 4)
#define GDB_FR_D3		(3 * 4)
#define GDB_FR_A0		(4 * 4)
#define GDB_FR_A1		(5 * 4)
#define GDB_FR_A2		(6 * 4)
#define GDB_FR_A3		(7 * 4)

#define GDB_FR_SP		(8 * 4)
#define GDB_FR_PC		(9 * 4)
#define GDB_FR_MDR		(10 * 4)
#define GDB_FR_EPSW		(11 * 4)
#define GDB_FR_LIR		(12 * 4)
#define GDB_FR_LAR		(13 * 4)
#define GDB_FR_MDRQ		(14 * 4)

#define GDB_FR_E0		(15 * 4)
#define GDB_FR_E1		(16 * 4)
#define GDB_FR_E2		(17 * 4)
#define GDB_FR_E3		(18 * 4)
#define GDB_FR_E4		(19 * 4)
#define GDB_FR_E5		(20 * 4)
#define GDB_FR_E6		(21 * 4)
#define GDB_FR_E7		(22 * 4)

#define GDB_FR_SSP		(23 * 4)
#define GDB_FR_MSP		(24 * 4)
#define GDB_FR_USP		(25 * 4)
#define GDB_FR_MCRH		(26 * 4)
#define GDB_FR_MCRL		(27 * 4)
#define GDB_FR_MCVF		(28 * 4)

#define GDB_FR_FPCR		(29 * 4)
#define GDB_FR_DUMMY0		(30 * 4)
#define GDB_FR_DUMMY1		(31 * 4)

#define GDB_FR_FS0		(32 * 4)

#define GDB_FR_SIZE		(NUMREGS * 4)

#ifndef __ASSEMBLY__

/*
 * This is the same as above, but for the high-level
 * part of the GDB stub.
 */

struct gdb_regs {
	/* saved main processor registers */
	u32	d0, d1, d2, d3, a0, a1, a2, a3;
	u32	sp, pc, mdr, epsw, lir, lar, mdrq;
	u32	e0, e1, e2, e3, e4, e5, e6, e7;
	u32	ssp, msp, usp, mcrh, mcrl, mcvf;

	/* saved floating point registers */
	u32	fpcr, _dummy0, _dummy1;
	u32	fs0,  fs1,  fs2,  fs3,  fs4,  fs5,  fs6,  fs7;
	u32	fs8,  fs9,  fs10, fs11, fs12, fs13, fs14, fs15;
	u32	fs16, fs17, fs18, fs19, fs20, fs21, fs22, fs23;
	u32	fs24, fs25, fs26, fs27, fs28, fs29, fs30, fs31;
};

/*
 * Prototypes
 */
extern void show_registers_only(struct pt_regs *regs);

extern asmlinkage void gdbstub_init(void);
extern asmlinkage void gdbstub_exit(int status);
extern asmlinkage void gdbstub_io_init(void);
extern asmlinkage void gdbstub_io_set_baud(unsigned baud);
extern asmlinkage int  gdbstub_io_rx_char(unsigned char *_ch, int nonblock);
extern asmlinkage void gdbstub_io_tx_char(unsigned char ch);
extern asmlinkage void gdbstub_io_tx_flush(void);

extern asmlinkage void gdbstub_io_rx_handler(void);
extern asmlinkage void gdbstub_rx_irq(struct pt_regs *, enum exception_code);
extern asmlinkage int  gdbstub_intercept(struct pt_regs *, enum exception_code);
extern asmlinkage void gdbstub_exception(struct pt_regs *, enum exception_code);
extern asmlinkage void __gdbstub_bug_trap(void);
extern asmlinkage void __gdbstub_pause(void);

#ifndef CONFIG_MN10300_CACHE_DISABLED
extern asmlinkage void gdbstub_purge_cache(void);
#else
#define gdbstub_purge_cache()	do {} while (0)
#endif

/* Used to prevent crashes in memory access */
extern asmlinkage int  gdbstub_read_byte(const u8 *, u8 *);
extern asmlinkage int  gdbstub_read_word(const u8 *, u8 *);
extern asmlinkage int  gdbstub_read_dword(const u8 *, u8 *);
extern asmlinkage int  gdbstub_write_byte(u32, u8 *);
extern asmlinkage int  gdbstub_write_word(u32, u8 *);
extern asmlinkage int  gdbstub_write_dword(u32, u8 *);

extern asmlinkage void gdbstub_read_byte_guard(void);
extern asmlinkage void gdbstub_read_byte_cont(void);
extern asmlinkage void gdbstub_read_word_guard(void);
extern asmlinkage void gdbstub_read_word_cont(void);
extern asmlinkage void gdbstub_read_dword_guard(void);
extern asmlinkage void gdbstub_read_dword_cont(void);
extern asmlinkage void gdbstub_write_byte_guard(void);
extern asmlinkage void gdbstub_write_byte_cont(void);
extern asmlinkage void gdbstub_write_word_guard(void);
extern asmlinkage void gdbstub_write_word_cont(void);
extern asmlinkage void gdbstub_write_dword_guard(void);
extern asmlinkage void gdbstub_write_dword_cont(void);

extern u8	gdbstub_rx_buffer[PAGE_SIZE];
extern u32	gdbstub_rx_inp;
extern u32	gdbstub_rx_outp;
extern u8	gdbstub_rx_overflow;
extern u8	gdbstub_busy;
extern u8	gdbstub_rx_unget;

#ifdef CONFIG_GDBSTUB_DEBUGGING
extern void gdbstub_printk(const char *fmt, ...)
	__attribute__((format(printf, 1, 2)));
#else
static inline __attribute__((format(printf, 1, 2)))
void gdbstub_printk(const char *fmt, ...)
{
}
#endif

#ifdef CONFIG_GDBSTUB_DEBUG_ENTRY
#define gdbstub_entry(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_entry(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
#endif

#ifdef CONFIG_GDBSTUB_DEBUG_PROTOCOL
#define gdbstub_proto(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_proto(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
#endif

#ifdef CONFIG_GDBSTUB_DEBUG_IO
#define gdbstub_io(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_io(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
#endif

#ifdef CONFIG_GDBSTUB_DEBUG_BREAKPOINT
#define gdbstub_bkpt(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
#else
#define gdbstub_bkpt(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
#endif

#endif /* !__ASSEMBLY__ */
#endif /* _ASM_GDB_STUB_H */
Commit	Line	Data
b920de1b DH	1	/* MN10300 Kernel GDB stub definitions
	2	*
	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
	6	*
	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.
	11	*/
	12	#ifndef _ASM_GDB_STUB_H
	13	#define _ASM_GDB_STUB_H
	14
	15	#include <asm/exceptions.h>
	16
	17	/*
	18	* register ID numbers in GDB remote protocol
	19	*/
	20
	21	#define GDB_REGID_PC 9
	22	#define GDB_REGID_FP 7
	23	#define GDB_REGID_SP 8
	24
	25	/*
	26	* virtual stack layout for the GDB exception handler
	27	*/
	28	#define NUMREGS 64
	29
	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)
	38
	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)
	46
	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)
	55
	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)
	62
	63	#define GDB_FR_FPCR (29 * 4)
	64	#define GDB_FR_DUMMY0 (30 * 4)
65	#define GDB_FR_DUMMY1 (31 * 4)
66
67	#define GDB_FR_FS0 (32 * 4)
68
69	#define GDB_FR_SIZE (NUMREGS * 4)
70
71	#ifndef __ASSEMBLY__
72
73	/*
74	* This is the same as above, but for the high-level
75	* part of the GDB stub.
76	*/
77
78	struct gdb_regs {
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;
84
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;
91	};
92
93	/*
94	* Prototypes
95	*/
96	extern void show_registers_only(struct pt_regs *regs);
97
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);
105
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);
b920de1b DH	112
	113	#ifndef CONFIG_MN10300_CACHE_DISABLED
	114	extern asmlinkage void gdbstub_purge_cache(void);
	115	#else
	116	#define gdbstub_purge_cache() do {} while (0)
	117	#endif
	118
	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 *);
	126
	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);
	139
	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;
	146
	147	#ifdef CONFIG_GDBSTUB_DEBUGGING
	148	extern void gdbstub_printk(const char *fmt, ...)
	149	__attribute__((format(printf, 1, 2)));
	150	#else
	151	static inline __attribute__((format(printf, 1, 2)))
	152	void gdbstub_printk(const char *fmt, ...)
	153	{
	154	}
	155	#endif
	156
	157	#ifdef CONFIG_GDBSTUB_DEBUG_ENTRY
	158	#define gdbstub_entry(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
	159	#else
95f45727	160	#define gdbstub_entry(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
b920de1b DH	161	#endif
	162
	163	#ifdef CONFIG_GDBSTUB_DEBUG_PROTOCOL
	164	#define gdbstub_proto(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
	165	#else
95f45727	166	#define gdbstub_proto(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
b920de1b DH	167	#endif
	168
	169	#ifdef CONFIG_GDBSTUB_DEBUG_IO
	170	#define gdbstub_io(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
	171	#else
95f45727	172	#define gdbstub_io(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
b920de1b DH	173	#endif
	174
	175	#ifdef CONFIG_GDBSTUB_DEBUG_BREAKPOINT
	176	#define gdbstub_bkpt(FMT, ...) gdbstub_printk(FMT, ##__VA_ARGS__)
	177	#else
95f45727	178	#define gdbstub_bkpt(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
b920de1b DH	179	#endif
	180
	181	#endif /* !__ASSEMBLY__ */
	182	#endif /* _ASM_GDB_STUB_H */