[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / debug / debug_core.h

/*
 * Created by: Jason Wessel <jason.wessel@windriver.com>
 *
 * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#ifndef _DEBUG_CORE_H_
#define _DEBUG_CORE_H_
/*
 * These are the private implementation headers between the kernel
 * debugger core and the debugger front end code.
 */

/* kernel debug core data structures */
struct kgdb_state {
	int			ex_vector;
	int			signo;
	int			err_code;
	int			cpu;
	int			pass_exception;
	unsigned long		thr_query;
	unsigned long		threadid;
	long			kgdb_usethreadid;
	struct pt_regs		*linux_regs;
};

/* Exception state values */
#define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */
#define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */
#define DCPU_IS_SLAVE    0x4 /* Slave cpu enter exception */
#define DCPU_SSTEP       0x8 /* CPU is single stepping */

struct debuggerinfo_struct {
	void			*debuggerinfo;
	struct task_struct	*task;
	int			exception_state;
	int			ret_state;
	int			irq_depth;
	int			enter_kgdb;
};

extern struct debuggerinfo_struct kgdb_info[];

/* kernel debug core break point routines */
extern int dbg_remove_all_break(void);
extern int dbg_set_sw_break(unsigned long addr);
extern int dbg_remove_sw_break(unsigned long addr);
extern int dbg_activate_sw_breakpoints(void);
extern int dbg_deactivate_sw_breakpoints(void);

/* polled character access to i/o module */
extern int dbg_io_get_char(void);

/* stub return value for switching between the gdbstub and kdb */
#define DBG_PASS_EVENT -12345
/* Switch from one cpu to another */
#define DBG_SWITCH_CPU_EVENT -123456
extern int dbg_switch_cpu;

/* gdbstub interface functions */
extern int gdb_serial_stub(struct kgdb_state *ks);
extern void gdbstub_msg_write(const char *s, int len);

/* gdbstub functions used for kdb <-> gdbstub transition */
extern int gdbstub_state(struct kgdb_state *ks, char *cmd);
extern int dbg_kdb_mode;

#ifdef CONFIG_KGDB_KDB
extern int kdb_stub(struct kgdb_state *ks);
extern int kdb_parse(const char *cmdstr);
extern int kdb_common_init_state(struct kgdb_state *ks);
extern int kdb_common_deinit_state(void);
#else /* ! CONFIG_KGDB_KDB */
static inline int kdb_stub(struct kgdb_state *ks)
{
	return DBG_PASS_EVENT;
}
#endif /* CONFIG_KGDB_KDB */

#endif /* _DEBUG_CORE_H_ */
Commit	Line	Data
53197fc4 JW	1	/*
	2	* Created by: Jason Wessel <jason.wessel@windriver.com>
	3	*
	4	* Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved.
	5	*
	6	* This file is licensed under the terms of the GNU General Public
	7	* License version 2. This program is licensed "as is" without any
	8	* warranty of any kind, whether express or implied.
	9	*/
	10
	11	#ifndef _DEBUG_CORE_H_
	12	#define _DEBUG_CORE_H_
	13	/*
	14	* These are the private implementation headers between the kernel
	15	* debugger core and the debugger front end code.
	16	*/
	17
	18	/* kernel debug core data structures */
	19	struct kgdb_state {
	20	int ex_vector;
	21	int signo;
	22	int err_code;
	23	int cpu;
	24	int pass_exception;
	25	unsigned long thr_query;
	26	unsigned long threadid;
	27	long kgdb_usethreadid;
	28	struct pt_regs *linux_regs;
	29	};
	30
	31	/* Exception state values */
	32	#define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */
	33	#define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */
	34	#define DCPU_IS_SLAVE 0x4 /* Slave cpu enter exception */
	35	#define DCPU_SSTEP 0x8 /* CPU is single stepping */
	36
	37	struct debuggerinfo_struct {
	38	void *debuggerinfo;
	39	struct task_struct *task;
	40	int exception_state;
dcc78711 JW	41	int ret_state;
dcc78711 JW	42	int irq_depth;
dfee3a7b	43	int enter_kgdb;
53197fc4 JW	44	};
	45
	46	extern struct debuggerinfo_struct kgdb_info[];
	47
	48	/* kernel debug core break point routines */
	49	extern int dbg_remove_all_break(void);
	50	extern int dbg_set_sw_break(unsigned long addr);
	51	extern int dbg_remove_sw_break(unsigned long addr);
	52	extern int dbg_activate_sw_breakpoints(void);
dcc78711 JW	53	extern int dbg_deactivate_sw_breakpoints(void);
	54
	55	/* polled character access to i/o module */
	56	extern int dbg_io_get_char(void);
	57
	58	/* stub return value for switching between the gdbstub and kdb */
	59	#define DBG_PASS_EVENT -12345
	60	/* Switch from one cpu to another */
	61	#define DBG_SWITCH_CPU_EVENT -123456
	62	extern int dbg_switch_cpu;
53197fc4 JW	63
	64	/* gdbstub interface functions */
	65	extern int gdb_serial_stub(struct kgdb_state *ks);
	66	extern void gdbstub_msg_write(const char *s, int len);
	67
dcc78711 JW	68	/* gdbstub functions used for kdb <-> gdbstub transition */
dcc78711 JW	69	extern int gdbstub_state(struct kgdb_state ks, char cmd);
a0de055c	70	extern int dbg_kdb_mode;
dcc78711 JW	71
	72	#ifdef CONFIG_KGDB_KDB
	73	extern int kdb_stub(struct kgdb_state *ks);
a0de055c	74	extern int kdb_parse(const char *cmdstr);
00370b8f MK	75	extern int kdb_common_init_state(struct kgdb_state *ks);
00370b8f MK	76	extern int kdb_common_deinit_state(void);
dcc78711 JW	77	#else /* ! CONFIG_KGDB_KDB */
	78	static inline int kdb_stub(struct kgdb_state *ks)
	79	{
	80	return DBG_PASS_EVENT;
	81	}
	82	#endif /* CONFIG_KGDB_KDB */
	83
53197fc4	84	#endif /* _DEBUG_CORE_H_ */