[linux-2.6-block.git] / include / asm-frv / gdb-stub.h

/* gdb-stub.h: FRV GDB stub
 *
 * Copyright (C) 2003 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 License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
#ifndef __ASM_GDB_STUB_H
#define __ASM_GDB_STUB_H

#undef GDBSTUB_DEBUG_PROTOCOL

#include <asm/ptrace.h>

/*
 * important register numbers in GDB protocol
 * - GR0,  GR1,  GR2,  GR3,  GR4,  GR5,  GR6,  GR7,
 * - GR8,  GR9,  GR10, GR11, GR12, GR13, GR14, GR15,
 * - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23,
 * - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31,
 * - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39,
 * - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47,
 * - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55,
 * - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63,
 * - FR0,  FR1,  FR2,  FR3,  FR4,  FR5,  FR6,  FR7,
 * - FR8,  FR9,  FR10, FR11, FR12, FR13, FR14, FR15,
 * - FR16, FR17, FR18, FR19, FR20, FR21, FR22, FR23,
 * - FR24, FR25, FR26, FR27, FR28, FR29, FR30, FR31,
 * - FR32, FR33, FR34, FR35, FR36, FR37, FR38, FR39,
 * - FR40, FR41, FR42, FR43, FR44, FR45, FR46, FR47,
 * - FR48, FR49, FR50, FR51, FR52, FR53, FR54, FR55,
 * - FR56, FR57, FR58, FR59, FR60, FR61, FR62, FR63,
 * - PC, PSR, CCR, CCCR,
 * - _X132, _X133, _X134
 * - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3,
 * - SCR0, SCR1, SCR2, SCR3,
 * - LR, LCR,
 * - IACC0H, IACC0L,
 * - FSR0,
 * - ACC0, ACC1, ACC2, ACC3, ACC4, ACC5, ACC6, ACC7,
 * - ACCG0123, ACCG4567,
 * - MSR0, MSR1,
 * - GNER0, GNER1,
 * - FNER0, FNER1,
 */
#define GDB_REG_GR(N)	(N)
#define GDB_REG_FR(N)	(64+(N))
#define GDB_REG_PC	128
#define GDB_REG_PSR	129
#define GDB_REG_CCR	130
#define GDB_REG_CCCR	131
#define GDB_REG_TBR	135
#define GDB_REG_BRR	136
#define GDB_REG_DBAR(N)	(137+(N))
#define GDB_REG_SCR(N)	(141+(N))
#define GDB_REG_LR	145
#define GDB_REG_LCR	146
#define GDB_REG_FSR0	149
#define GDB_REG_ACC(N)	(150+(N))
#define GDB_REG_ACCG(N)	(158+(N)/4)
#define GDB_REG_MSR(N)	(160+(N))
#define GDB_REG_GNER(N)	(162+(N))
#define GDB_REG_FNER(N)	(164+(N))

#define GDB_REG_SP	GDB_REG_GR(1)
#define GDB_REG_FP	GDB_REG_GR(2)

#ifndef _LANGUAGE_ASSEMBLY

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

extern void gdbstub_init(void);
extern void gdbstub(int type);
extern void gdbstub_exit(int status);

extern void gdbstub_io_init(void);
extern void gdbstub_set_baud(unsigned baud);
extern int gdbstub_rx_char(unsigned char *_ch, int nonblock);
extern void gdbstub_tx_char(unsigned char ch);
extern void gdbstub_tx_flush(void);
extern void gdbstub_do_rx(void);

extern asmlinkage void __debug_stub_init_break(void);
extern asmlinkage void __break_hijack_kernel_event(void);
extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
extern asmlinkage void start_kernel(void);

extern asmlinkage void gdbstub_rx_handler(void);
extern asmlinkage void gdbstub_rx_irq(void);
extern asmlinkage void gdbstub_intercept(void);

extern uint32_t __entry_usertrap_table[];
extern uint32_t __entry_kerneltrap_table[];

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

extern void gdbstub_printk(const char *fmt, ...);
extern void debug_to_serial(const char *p, int n);
extern void console_set_baud(unsigned baud);

#ifdef GDBSTUB_DEBUG_PROTOCOL
#define gdbstub_proto(FMT,...) gdbstub_printk(FMT,##__VA_ARGS__)
#else
#define gdbstub_proto(FMT,...) ({ 0; })
#endif

/*
 * we dedicate GR31 to keeping a pointer to the gdbstub exception frame
 * - gr31 is destroyed on entry to the gdbstub if !MMU
 * - gr31 is saved in scr3 on entry to the gdbstub if in !MMU
 */
register struct frv_frame0 *__debug_frame0 asm("gr31");

#define __debug_frame		(&__debug_frame0->regs)
#define __debug_user_context	(&__debug_frame0->uc)
#define __debug_regs		(&__debug_frame0->debug)
#define __debug_reg(X)		((unsigned long *) ((unsigned long) &__debug_frame0 + (X)))

struct frv_debug_status {
	unsigned long		bpsr;
	unsigned long		dcr;
	unsigned long		brr;
	unsigned long		nmar;
};

extern struct frv_debug_status __debug_status;

#endif /* _LANGUAGE_ASSEMBLY */
#endif /* __ASM_GDB_STUB_H */
Commit	Line	Data
1da177e4 LT	1	/* gdb-stub.h: FRV GDB stub
	2	*
	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
	6	*
	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.
	11	*/
	12	#ifndef __ASM_GDB_STUB_H
	13	#define __ASM_GDB_STUB_H
	14
	15	#undef GDBSTUB_DEBUG_PROTOCOL
	16
	17	#include <asm/ptrace.h>
	18
	19	/*
	20	* important register numbers in GDB protocol
	21	* - GR0, GR1, GR2, GR3, GR4, GR5, GR6, GR7,
	22	* - GR8, GR9, GR10, GR11, GR12, GR13, GR14, GR15,
	23	* - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23,
	24	* - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31,
	25	* - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39,
	26	* - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47,
	27	* - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55,
	28	* - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63,
	29	* - FR0, FR1, FR2, FR3, FR4, FR5, FR6, FR7,
	30	* - FR8, FR9, FR10, FR11, FR12, FR13, FR14, FR15,
	31	* - FR16, FR17, FR18, FR19, FR20, FR21, FR22, FR23,
	32	* - FR24, FR25, FR26, FR27, FR28, FR29, FR30, FR31,
	33	* - FR32, FR33, FR34, FR35, FR36, FR37, FR38, FR39,
	34	* - FR40, FR41, FR42, FR43, FR44, FR45, FR46, FR47,
	35	* - FR48, FR49, FR50, FR51, FR52, FR53, FR54, FR55,
	36	* - FR56, FR57, FR58, FR59, FR60, FR61, FR62, FR63,
	37	* - PC, PSR, CCR, CCCR,
	38	* - _X132, _X133, _X134
	39	* - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3,
	40	* - SCR0, SCR1, SCR2, SCR3,
	41	* - LR, LCR,
	42	* - IACC0H, IACC0L,
	43	* - FSR0,
	44	* - ACC0, ACC1, ACC2, ACC3, ACC4, ACC5, ACC6, ACC7,
	45	* - ACCG0123, ACCG4567,
	46	* - MSR0, MSR1,
	47	* - GNER0, GNER1,
	48	* - FNER0, FNER1,
	49	*/
	50	#define GDB_REG_GR(N) (N)
	51	#define GDB_REG_FR(N) (64+(N))
	52	#define GDB_REG_PC 128
	53	#define GDB_REG_PSR 129
	54	#define GDB_REG_CCR 130
	55	#define GDB_REG_CCCR 131
	56	#define GDB_REG_TBR 135
	57	#define GDB_REG_BRR 136
	58	#define GDB_REG_DBAR(N) (137+(N))
	59	#define GDB_REG_SCR(N) (141+(N))
	60	#define GDB_REG_LR 145
	61	#define GDB_REG_LCR 146
	62	#define GDB_REG_FSR0 149
	63	#define GDB_REG_ACC(N) (150+(N))
	64	#define GDB_REG_ACCG(N) (158+(N)/4)
65	#define GDB_REG_MSR(N) (160+(N))
66	#define GDB_REG_GNER(N) (162+(N))
67	#define GDB_REG_FNER(N) (164+(N))
68
69	#define GDB_REG_SP GDB_REG_GR(1)
70	#define GDB_REG_FP GDB_REG_GR(2)
71
72	#ifndef _LANGUAGE_ASSEMBLY
73
74	/*
75	* Prototypes
76	*/
77	extern void show_registers_only(struct pt_regs *regs);
78
79	extern void gdbstub_init(void);
80	extern void gdbstub(int type);
81	extern void gdbstub_exit(int status);
82
83	extern void gdbstub_io_init(void);
84	extern void gdbstub_set_baud(unsigned baud);
85	extern int gdbstub_rx_char(unsigned char *_ch, int nonblock);
86	extern void gdbstub_tx_char(unsigned char ch);
87	extern void gdbstub_tx_flush(void);
88	extern void gdbstub_do_rx(void);
89
90	extern asmlinkage void __debug_stub_init_break(void);
91	extern asmlinkage void __break_hijack_kernel_event(void);
84e8cd6d	92	extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
1da177e4 LT	93	extern asmlinkage void start_kernel(void);
	94
	95	extern asmlinkage void gdbstub_rx_handler(void);
	96	extern asmlinkage void gdbstub_rx_irq(void);
	97	extern asmlinkage void gdbstub_intercept(void);
	98
	99	extern uint32_t __entry_usertrap_table[];
	100	extern uint32_t __entry_kerneltrap_table[];
	101
	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;
	107
	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);
	111
	112	#ifdef GDBSTUB_DEBUG_PROTOCOL
	113	#define gdbstub_proto(FMT,...) gdbstub_printk(FMT,##__VA_ARGS__)
	114	#else
	115	#define gdbstub_proto(FMT,...) ({ 0; })
	116	#endif
	117
84e8cd6d DH	118	/*
	119	* we dedicate GR31 to keeping a pointer to the gdbstub exception frame
	120	* - gr31 is destroyed on entry to the gdbstub if !MMU
	121	* - gr31 is saved in scr3 on entry to the gdbstub if in !MMU
	122	*/
	123	register struct frv_frame0 *__debug_frame0 asm("gr31");
	124
	125	#define __debug_frame (&__debug_frame0->regs)
	126	#define __debug_user_context (&__debug_frame0->uc)
	127	#define __debug_regs (&__debug_frame0->debug)
	128	#define __debug_reg(X) ((unsigned long *) ((unsigned long) &__debug_frame0 + (X)))
	129
	130	struct frv_debug_status {
	131	unsigned long bpsr;
	132	unsigned long dcr;
	133	unsigned long brr;
	134	unsigned long nmar;
	135	};
	136
	137	extern struct frv_debug_status __debug_status;
	138
1da177e4 LT	139	#endif /* _LANGUAGE_ASSEMBLY */
1da177e4 LT	140	#endif /* __ASM_GDB_STUB_H */