[net-next-2.6.git] / kernel / debug / kdb / kdb_private.h

#ifndef _KDBPRIVATE_H
#define _KDBPRIVATE_H

/*
 * Kernel Debugger Architecture Independent Private Headers
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
 * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
 */

#include <linux/kgdb.h>
#include "../debug_core.h"

/* Kernel Debugger Error codes.  Must not overlap with command codes. */
#define KDB_NOTFOUND	(-1)
#define KDB_ARGCOUNT	(-2)
#define KDB_BADWIDTH	(-3)
#define KDB_BADRADIX	(-4)
#define KDB_NOTENV	(-5)
#define KDB_NOENVVALUE	(-6)
#define KDB_NOTIMP	(-7)
#define KDB_ENVFULL	(-8)
#define KDB_ENVBUFFULL	(-9)
#define KDB_TOOMANYBPT	(-10)
#define KDB_TOOMANYDBREGS (-11)
#define KDB_DUPBPT	(-12)
#define KDB_BPTNOTFOUND	(-13)
#define KDB_BADMODE	(-14)
#define KDB_BADINT	(-15)
#define KDB_INVADDRFMT  (-16)
#define KDB_BADREG      (-17)
#define KDB_BADCPUNUM   (-18)
#define KDB_BADLENGTH	(-19)
#define KDB_NOBP	(-20)
#define KDB_BADADDR	(-21)

/* Kernel Debugger Command codes.  Must not overlap with error codes. */
#define KDB_CMD_GO	(-1001)
#define KDB_CMD_CPU	(-1002)
#define KDB_CMD_SS	(-1003)
#define KDB_CMD_SSB	(-1004)
#define KDB_CMD_KGDB (-1005)
#define KDB_CMD_KGDB2 (-1006)

/* Internal debug flags */
#define KDB_DEBUG_FLAG_BP	0x0002	/* Breakpoint subsystem debug */
#define KDB_DEBUG_FLAG_BB_SUMM	0x0004	/* Basic block analysis, summary only */
#define KDB_DEBUG_FLAG_AR	0x0008	/* Activation record, generic */
#define KDB_DEBUG_FLAG_ARA	0x0010	/* Activation record, arch specific */
#define KDB_DEBUG_FLAG_BB	0x0020	/* All basic block analysis */
#define KDB_DEBUG_FLAG_STATE	0x0040	/* State flags */
#define KDB_DEBUG_FLAG_MASK	0xffff	/* All debug flags */
#define KDB_DEBUG_FLAG_SHIFT	16	/* Shift factor for dbflags */

#define KDB_DEBUG(flag)	(kdb_flags & \
	(KDB_DEBUG_FLAG_##flag << KDB_DEBUG_FLAG_SHIFT))
#define KDB_DEBUG_STATE(text, value) if (KDB_DEBUG(STATE)) \
		kdb_print_state(text, value)

#if BITS_PER_LONG == 32

#define KDB_PLATFORM_ENV	"BYTESPERWORD=4"

#define kdb_machreg_fmt		"0x%lx"
#define kdb_machreg_fmt0	"0x%08lx"
#define kdb_bfd_vma_fmt		"0x%lx"
#define kdb_bfd_vma_fmt0	"0x%08lx"
#define kdb_elfw_addr_fmt	"0x%x"
#define kdb_elfw_addr_fmt0	"0x%08x"
#define kdb_f_count_fmt		"%d"

#elif BITS_PER_LONG == 64

#define KDB_PLATFORM_ENV	"BYTESPERWORD=8"

#define kdb_machreg_fmt		"0x%lx"
#define kdb_machreg_fmt0	"0x%016lx"
#define kdb_bfd_vma_fmt		"0x%lx"
#define kdb_bfd_vma_fmt0	"0x%016lx"
#define kdb_elfw_addr_fmt	"0x%x"
#define kdb_elfw_addr_fmt0	"0x%016x"
#define kdb_f_count_fmt		"%ld"

#endif

/*
 * KDB_MAXBPT describes the total number of breakpoints
 * supported by this architecure.
 */
#define KDB_MAXBPT	16

/* Maximum number of arguments to a function  */
#define KDB_MAXARGS    16

typedef enum {
	KDB_REPEAT_NONE = 0,	/* Do not repeat this command */
	KDB_REPEAT_NO_ARGS,	/* Repeat the command without arguments */
	KDB_REPEAT_WITH_ARGS,	/* Repeat the command including its arguments */
} kdb_repeat_t;

typedef int (*kdb_func_t)(int, const char **);

/* Symbol table format returned by kallsyms. */
typedef struct __ksymtab {
		unsigned long value;	/* Address of symbol */
		const char *mod_name;	/* Module containing symbol or
					 * "kernel" */
		unsigned long mod_start;
		unsigned long mod_end;
		const char *sec_name;	/* Section containing symbol */
		unsigned long sec_start;
		unsigned long sec_end;
		const char *sym_name;	/* Full symbol name, including
					 * any version */
		unsigned long sym_start;
		unsigned long sym_end;
		} kdb_symtab_t;
extern int kallsyms_symbol_next(char *prefix_name, int flag);
extern int kallsyms_symbol_complete(char *prefix_name, int max_len);

/* Exported Symbols for kernel loadable modules to use. */
extern int kdb_register(char *, kdb_func_t, char *, char *, short);
extern int kdb_register_repeat(char *, kdb_func_t, char *, char *,
			       short, kdb_repeat_t);
extern int kdb_unregister(char *);

extern int kdb_getarea_size(void *, unsigned long, size_t);
extern int kdb_putarea_size(unsigned long, void *, size_t);

/*
 * Like get_user and put_user, kdb_getarea and kdb_putarea take variable
 * names, not pointers.  The underlying *_size functions take pointers.
 */
#define kdb_getarea(x, addr) kdb_getarea_size(&(x), addr, sizeof((x)))
#define kdb_putarea(addr, x) kdb_putarea_size(addr, &(x), sizeof((x)))

extern int kdb_getphysword(unsigned long *word,
			unsigned long addr, size_t size);
extern int kdb_getword(unsigned long *, unsigned long, size_t);
extern int kdb_putword(unsigned long, unsigned long, size_t);

extern int kdbgetularg(const char *, unsigned long *);
extern char *kdbgetenv(const char *);
extern int kdbgetaddrarg(int, const char **, int*, unsigned long *,
			 long *, char **);
extern int kdbgetsymval(const char *, kdb_symtab_t *);
extern int kdbnearsym(unsigned long, kdb_symtab_t *);
extern void kdbnearsym_cleanup(void);
extern char *kdb_strdup(const char *str, gfp_t type);
extern void kdb_symbol_print(unsigned long, const kdb_symtab_t *, unsigned int);

/* Routine for debugging the debugger state. */
extern void kdb_print_state(const char *, int);

extern int kdb_state;
#define KDB_STATE_KDB		0x00000001	/* Cpu is inside kdb */
#define KDB_STATE_LEAVING	0x00000002	/* Cpu is leaving kdb */
#define KDB_STATE_CMD		0x00000004	/* Running a kdb command */
#define KDB_STATE_KDB_CONTROL	0x00000008	/* This cpu is under
						 * kdb control */
#define KDB_STATE_HOLD_CPU	0x00000010	/* Hold this cpu inside kdb */
#define KDB_STATE_DOING_SS	0x00000020	/* Doing ss command */
#define KDB_STATE_DOING_SSB	0x00000040	/* Doing ssb command,
						 * DOING_SS is also set */
#define KDB_STATE_SSBPT		0x00000080	/* Install breakpoint
						 * after one ss, independent of
						 * DOING_SS */
#define KDB_STATE_REENTRY	0x00000100	/* Valid re-entry into kdb */
#define KDB_STATE_SUPPRESS	0x00000200	/* Suppress error messages */
#define KDB_STATE_PAGER		0x00000400	/* pager is available */
#define KDB_STATE_GO_SWITCH	0x00000800	/* go is switching
						 * back to initial cpu */
#define KDB_STATE_PRINTF_LOCK	0x00001000	/* Holds kdb_printf lock */
#define KDB_STATE_WAIT_IPI	0x00002000	/* Waiting for kdb_ipi() NMI */
#define KDB_STATE_RECURSE	0x00004000	/* Recursive entry to kdb */
#define KDB_STATE_IP_ADJUSTED	0x00008000	/* Restart IP has been
						 * adjusted */
#define KDB_STATE_GO1		0x00010000	/* go only releases one cpu */
#define KDB_STATE_KEYBOARD	0x00020000	/* kdb entered via
						 * keyboard on this cpu */
#define KDB_STATE_KEXEC		0x00040000	/* kexec issued */
#define KDB_STATE_DOING_KGDB	0x00080000	/* kgdb enter now issued */
#define KDB_STATE_DOING_KGDB2	0x00100000	/* kgdb enter now issued */
#define KDB_STATE_KGDB_TRANS	0x00200000	/* Transition to kgdb */
#define KDB_STATE_ARCH		0xff000000	/* Reserved for arch
						 * specific use */

#define KDB_STATE(flag) (kdb_state & KDB_STATE_##flag)
#define KDB_STATE_SET(flag) ((void)(kdb_state |= KDB_STATE_##flag))
#define KDB_STATE_CLEAR(flag) ((void)(kdb_state &= ~KDB_STATE_##flag))

extern int kdb_nextline; /* Current number of lines displayed */

typedef struct _kdb_bp {
	unsigned long	bp_addr;	/* Address breakpoint is present at */
	unsigned int	bp_free:1;	/* This entry is available */
	unsigned int	bp_enabled:1;	/* Breakpoint is active in register */
	unsigned int	bp_type:4;	/* Uses hardware register */
	unsigned int	bp_installed:1;	/* Breakpoint is installed */
	unsigned int	bp_delay:1;	/* Do delayed bp handling */
	unsigned int	bp_delayed:1;	/* Delayed breakpoint */
	unsigned int	bph_length;	/* HW break length */
} kdb_bp_t;

#ifdef CONFIG_KGDB_KDB
extern kdb_bp_t kdb_breakpoints[/* KDB_MAXBPT */];

/* The KDB shell command table */
typedef struct _kdbtab {
	char    *cmd_name;		/* Command name */
	kdb_func_t cmd_func;		/* Function to execute command */
	char    *cmd_usage;		/* Usage String for this command */
	char    *cmd_help;		/* Help message for this command */
	short    cmd_flags;		/* Parsing flags */
	short    cmd_minlen;		/* Minimum legal # command
					 * chars required */
	kdb_repeat_t cmd_repeat;	/* Does command auto repeat on enter? */
} kdbtab_t;

extern int kdb_bt(int, const char **);	/* KDB display back trace */

/* KDB breakpoint management functions */
extern void kdb_initbptab(void);
extern void kdb_bp_install(struct pt_regs *);
extern void kdb_bp_remove(void);

typedef enum {
	KDB_DB_BPT,	/* Breakpoint */
	KDB_DB_SS,	/* Single-step trap */
	KDB_DB_SSB,	/* Single step to branch */
	KDB_DB_SSBPT,	/* Single step over breakpoint */
	KDB_DB_NOBPT	/* Spurious breakpoint */
} kdb_dbtrap_t;

extern int kdb_main_loop(kdb_reason_t, kdb_reason_t,
			 int, kdb_dbtrap_t, struct pt_regs *);

/* Miscellaneous functions and data areas */
extern int kdb_grepping_flag;
extern char kdb_grep_string[];
extern int kdb_grep_leading;
extern int kdb_grep_trailing;
extern char *kdb_cmds[];
extern void kdb_syslog_data(char *syslog_data[]);
extern unsigned long kdb_task_state_string(const char *);
extern char kdb_task_state_char (const struct task_struct *);
extern unsigned long kdb_task_state(const struct task_struct *p,
				    unsigned long mask);
extern void kdb_ps_suppressed(void);
extern void kdb_ps1(const struct task_struct *p);
extern void kdb_print_nameval(const char *name, unsigned long val);
extern void kdb_send_sig_info(struct task_struct *p, struct siginfo *info);
extern void kdb_meminfo_proc_show(void);
#ifdef CONFIG_KALLSYMS
extern const char *kdb_walk_kallsyms(loff_t *pos);
#else /* ! CONFIG_KALLSYMS */
static inline const char *kdb_walk_kallsyms(loff_t *pos)
{
	return NULL;
}
#endif /* ! CONFIG_KALLSYMS */
extern char *kdb_getstr(char *, size_t, char *);

/* Defines for kdb_symbol_print */
#define KDB_SP_SPACEB	0x0001		/* Space before string */
#define KDB_SP_SPACEA	0x0002		/* Space after string */
#define KDB_SP_PAREN	0x0004		/* Parenthesis around string */
#define KDB_SP_VALUE	0x0008		/* Print the value of the address */
#define KDB_SP_SYMSIZE	0x0010		/* Print the size of the symbol */
#define KDB_SP_NEWLINE	0x0020		/* Newline after string */
#define KDB_SP_DEFAULT (KDB_SP_VALUE|KDB_SP_PAREN)

#define KDB_TSK(cpu) kgdb_info[cpu].task
#define KDB_TSKREGS(cpu) kgdb_info[cpu].debuggerinfo

extern struct task_struct *kdb_curr_task(int);

#define kdb_task_has_cpu(p) (task_curr(p))

/* Simplify coexistence with NPTL */
#define	kdb_do_each_thread(g, p) do_each_thread(g, p)
#define	kdb_while_each_thread(g, p) while_each_thread(g, p)

#define GFP_KDB (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL)

extern void *debug_kmalloc(size_t size, gfp_t flags);
extern void debug_kfree(void *);
extern void debug_kusage(void);

extern void kdb_set_current_task(struct task_struct *);
extern struct task_struct *kdb_current_task;
#ifdef CONFIG_MODULES
extern struct list_head *kdb_modules;
#endif /* CONFIG_MODULES */

extern char kdb_prompt_str[];

#define	KDB_WORD_SIZE	((int)sizeof(unsigned long))

#endif /* CONFIG_KGDB_KDB */
#endif	/* !_KDBPRIVATE_H */
Commit	Line	Data
5d5314d6 JW	1	#ifndef _KDBPRIVATE_H
	2	#define _KDBPRIVATE_H
	3
	4	/*
	5	* Kernel Debugger Architecture Independent Private Headers
	6	*
	7	* This file is subject to the terms and conditions of the GNU General Public
	8	* License. See the file "COPYING" in the main directory of this archive
	9	* for more details.
	10	*
	11	* Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
	12	* Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved.
	13	*/
	14
	15	#include <linux/kgdb.h>
	16	#include "../debug_core.h"
	17
	18	/* Kernel Debugger Error codes. Must not overlap with command codes. */
	19	#define KDB_NOTFOUND (-1)
	20	#define KDB_ARGCOUNT (-2)
	21	#define KDB_BADWIDTH (-3)
	22	#define KDB_BADRADIX (-4)
	23	#define KDB_NOTENV (-5)
	24	#define KDB_NOENVVALUE (-6)
	25	#define KDB_NOTIMP (-7)
	26	#define KDB_ENVFULL (-8)
	27	#define KDB_ENVBUFFULL (-9)
	28	#define KDB_TOOMANYBPT (-10)
	29	#define KDB_TOOMANYDBREGS (-11)
	30	#define KDB_DUPBPT (-12)
	31	#define KDB_BPTNOTFOUND (-13)
	32	#define KDB_BADMODE (-14)
	33	#define KDB_BADINT (-15)
	34	#define KDB_INVADDRFMT (-16)
	35	#define KDB_BADREG (-17)
	36	#define KDB_BADCPUNUM (-18)
	37	#define KDB_BADLENGTH (-19)
	38	#define KDB_NOBP (-20)
	39	#define KDB_BADADDR (-21)
	40
	41	/* Kernel Debugger Command codes. Must not overlap with error codes. */
	42	#define KDB_CMD_GO (-1001)
	43	#define KDB_CMD_CPU (-1002)
	44	#define KDB_CMD_SS (-1003)
	45	#define KDB_CMD_SSB (-1004)
	46	#define KDB_CMD_KGDB (-1005)
	47	#define KDB_CMD_KGDB2 (-1006)
	48
	49	/* Internal debug flags */
	50	#define KDB_DEBUG_FLAG_BP 0x0002 /* Breakpoint subsystem debug */
	51	#define KDB_DEBUG_FLAG_BB_SUMM 0x0004 /* Basic block analysis, summary only */
	52	#define KDB_DEBUG_FLAG_AR 0x0008 /* Activation record, generic */
	53	#define KDB_DEBUG_FLAG_ARA 0x0010 /* Activation record, arch specific */
	54	#define KDB_DEBUG_FLAG_BB 0x0020 /* All basic block analysis */
	55	#define KDB_DEBUG_FLAG_STATE 0x0040 /* State flags */
	56	#define KDB_DEBUG_FLAG_MASK 0xffff /* All debug flags */
	57	#define KDB_DEBUG_FLAG_SHIFT 16 /* Shift factor for dbflags */
	58
	59	#define KDB_DEBUG(flag) (kdb_flags & \
	60	(KDB_DEBUG_FLAG_##flag << KDB_DEBUG_FLAG_SHIFT))
	61	#define KDB_DEBUG_STATE(text, value) if (KDB_DEBUG(STATE)) \
	62	kdb_print_state(text, value)
	63
	64	#if BITS_PER_LONG == 32
65
66	#define KDB_PLATFORM_ENV "BYTESPERWORD=4"
67
68	#define kdb_machreg_fmt "0x%lx"
69	#define kdb_machreg_fmt0 "0x%08lx"
70	#define kdb_bfd_vma_fmt "0x%lx"
71	#define kdb_bfd_vma_fmt0 "0x%08lx"
72	#define kdb_elfw_addr_fmt "0x%x"
73	#define kdb_elfw_addr_fmt0 "0x%08x"
74	#define kdb_f_count_fmt "%d"
75
76	#elif BITS_PER_LONG == 64
77
78	#define KDB_PLATFORM_ENV "BYTESPERWORD=8"
79
80	#define kdb_machreg_fmt "0x%lx"
81	#define kdb_machreg_fmt0 "0x%016lx"
82	#define kdb_bfd_vma_fmt "0x%lx"
83	#define kdb_bfd_vma_fmt0 "0x%016lx"
84	#define kdb_elfw_addr_fmt "0x%x"
85	#define kdb_elfw_addr_fmt0 "0x%016x"
86	#define kdb_f_count_fmt "%ld"
87
88	#endif
89
90	/*
91	* KDB_MAXBPT describes the total number of breakpoints
92	* supported by this architecure.
93	*/
94	#define KDB_MAXBPT 16
95
96	/* Maximum number of arguments to a function */
97	#define KDB_MAXARGS 16
98
99	typedef enum {
100	KDB_REPEAT_NONE = 0, /* Do not repeat this command */
101	KDB_REPEAT_NO_ARGS, /* Repeat the command without arguments */
102	KDB_REPEAT_WITH_ARGS, /* Repeat the command including its arguments */
103	} kdb_repeat_t;
104
105	typedef int (kdb_func_t)(int, const char *);
106
107	/* Symbol table format returned by kallsyms. */
108	typedef struct __ksymtab {
109	unsigned long value; /* Address of symbol */
110	const char mod_name; / Module containing symbol or
111	* "kernel" */
112	unsigned long mod_start;
113	unsigned long mod_end;
114	const char sec_name; / Section containing symbol */
115	unsigned long sec_start;
116	unsigned long sec_end;
117	const char sym_name; / Full symbol name, including
118	* any version */
119	unsigned long sym_start;
120	unsigned long sym_end;
121	} kdb_symtab_t;
122	extern int kallsyms_symbol_next(char *prefix_name, int flag);
123	extern int kallsyms_symbol_complete(char *prefix_name, int max_len);
124
125	/* Exported Symbols for kernel loadable modules to use. */
126	extern int kdb_register(char , kdb_func_t, char , char *, short);
127	extern int kdb_register_repeat(char , kdb_func_t, char , char *,
128	short, kdb_repeat_t);
129	extern int kdb_unregister(char *);
130
131	extern int kdb_getarea_size(void *, unsigned long, size_t);
132	extern int kdb_putarea_size(unsigned long, void *, size_t);
133
134	/*
135	* Like get_user and put_user, kdb_getarea and kdb_putarea take variable
136	* names, not pointers. The underlying *_size functions take pointers.
137	*/
138	#define kdb_getarea(x, addr) kdb_getarea_size(&(x), addr, sizeof((x)))
139	#define kdb_putarea(addr, x) kdb_putarea_size(addr, &(x), sizeof((x)))
140
141	extern int kdb_getphysword(unsigned long *word,
142	unsigned long addr, size_t size);
143	extern int kdb_getword(unsigned long *, unsigned long, size_t);
144	extern int kdb_putword(unsigned long, unsigned long, size_t);
145
146	extern int kdbgetularg(const char , unsigned long );
5d5314d6	147	extern char kdbgetenv(const char );
5d5314d6 JW	148	extern int kdbgetaddrarg(int, const char *, int, unsigned long *,
	149	long , char *);
	150	extern int kdbgetsymval(const char , kdb_symtab_t );
	151	extern int kdbnearsym(unsigned long, kdb_symtab_t *);
	152	extern void kdbnearsym_cleanup(void);
	153	extern char kdb_strdup(const char str, gfp_t type);
	154	extern void kdb_symbol_print(unsigned long, const kdb_symtab_t *, unsigned int);
	155
	156	/* Routine for debugging the debugger state. */
	157	extern void kdb_print_state(const char *, int);
	158
	159	extern int kdb_state;
	160	#define KDB_STATE_KDB 0x00000001 /* Cpu is inside kdb */
	161	#define KDB_STATE_LEAVING 0x00000002 /* Cpu is leaving kdb */
	162	#define KDB_STATE_CMD 0x00000004 /* Running a kdb command */
	163	#define KDB_STATE_KDB_CONTROL 0x00000008 /* This cpu is under
	164	* kdb control */
	165	#define KDB_STATE_HOLD_CPU 0x00000010 /* Hold this cpu inside kdb */
	166	#define KDB_STATE_DOING_SS 0x00000020 /* Doing ss command */
	167	#define KDB_STATE_DOING_SSB 0x00000040 /* Doing ssb command,
	168	* DOING_SS is also set */
	169	#define KDB_STATE_SSBPT 0x00000080 /* Install breakpoint
	170	* after one ss, independent of
	171	* DOING_SS */
	172	#define KDB_STATE_REENTRY 0x00000100 /* Valid re-entry into kdb */
	173	#define KDB_STATE_SUPPRESS 0x00000200 /* Suppress error messages */
	174	#define KDB_STATE_PAGER 0x00000400 /* pager is available */
	175	#define KDB_STATE_GO_SWITCH 0x00000800 /* go is switching
	176	* back to initial cpu */
	177	#define KDB_STATE_PRINTF_LOCK 0x00001000 /* Holds kdb_printf lock */
	178	#define KDB_STATE_WAIT_IPI 0x00002000 /* Waiting for kdb_ipi() NMI */
	179	#define KDB_STATE_RECURSE 0x00004000 /* Recursive entry to kdb */
	180	#define KDB_STATE_IP_ADJUSTED 0x00008000 /* Restart IP has been
	181	* adjusted */
	182	#define KDB_STATE_GO1 0x00010000 /* go only releases one cpu */
	183	#define KDB_STATE_KEYBOARD 0x00020000 /* kdb entered via
	184	* keyboard on this cpu */
	185	#define KDB_STATE_KEXEC 0x00040000 /* kexec issued */
	186	#define KDB_STATE_DOING_KGDB 0x00080000 /* kgdb enter now issued */
	187	#define KDB_STATE_DOING_KGDB2 0x00100000 /* kgdb enter now issued */
	188	#define KDB_STATE_KGDB_TRANS 0x00200000 /* Transition to kgdb */
	189	#define KDB_STATE_ARCH 0xff000000 /* Reserved for arch
	190	* specific use */
	191
	192	#define KDB_STATE(flag) (kdb_state & KDB_STATE_##flag)
	193	#define KDB_STATE_SET(flag) ((void)(kdb_state \|= KDB_STATE_##flag))
	194	#define KDB_STATE_CLEAR(flag) ((void)(kdb_state &= ~KDB_STATE_##flag))
	195
	196	extern int kdb_nextline; /* Current number of lines displayed */
	197
	198	typedef struct _kdb_bp {
	199	unsigned long bp_addr; /* Address breakpoint is present at */
	200	unsigned int bp_free:1; /* This entry is available */
	201	unsigned int bp_enabled:1; /* Breakpoint is active in register */
	202	unsigned int bp_type:4; /* Uses hardware register */
	203	unsigned int bp_installed:1; /* Breakpoint is installed */
	204	unsigned int bp_delay:1; /* Do delayed bp handling */
	205	unsigned int bp_delayed:1; /* Delayed breakpoint */
	206	unsigned int bph_length; /* HW break length */
	207	} kdb_bp_t;
	208
	209	#ifdef CONFIG_KGDB_KDB
	210	extern kdb_bp_t kdb_breakpoints[/* KDB_MAXBPT */];
	211
212	/* The KDB shell command table */
213	typedef struct _kdbtab {
214	char cmd_name; / Command name */
215	kdb_func_t cmd_func; /* Function to execute command */
216	char cmd_usage; / Usage String for this command */
217	char cmd_help; / Help message for this command */
218	short cmd_flags; /* Parsing flags */
219	short cmd_minlen; /* Minimum legal # command
220	* chars required */
221	kdb_repeat_t cmd_repeat; /* Does command auto repeat on enter? */
222	} kdbtab_t;
223
224	extern int kdb_bt(int, const char *); / KDB display back trace */
225
226	/* KDB breakpoint management functions */
227	extern void kdb_initbptab(void);
228	extern void kdb_bp_install(struct pt_regs *);
229	extern void kdb_bp_remove(void);
230
231	typedef enum {
232	KDB_DB_BPT, /* Breakpoint */
233	KDB_DB_SS, /* Single-step trap */
234	KDB_DB_SSB, /* Single step to branch */
235	KDB_DB_SSBPT, /* Single step over breakpoint */
236	KDB_DB_NOBPT /* Spurious breakpoint */
237	} kdb_dbtrap_t;
238
239	extern int kdb_main_loop(kdb_reason_t, kdb_reason_t,
240	int, kdb_dbtrap_t, struct pt_regs *);
241
242	/* Miscellaneous functions and data areas */
243	extern int kdb_grepping_flag;
244	extern char kdb_grep_string[];
245	extern int kdb_grep_leading;
246	extern int kdb_grep_trailing;
247	extern char *kdb_cmds[];
248	extern void kdb_syslog_data(char *syslog_data[]);
249	extern unsigned long kdb_task_state_string(const char *);
250	extern char kdb_task_state_char (const struct task_struct *);
251	extern unsigned long kdb_task_state(const struct task_struct *p,
252	unsigned long mask);
253	extern void kdb_ps_suppressed(void);
254	extern void kdb_ps1(const struct task_struct *p);
5d5314d6 JW	255	extern void kdb_print_nameval(const char *name, unsigned long val);
	256	extern void kdb_send_sig_info(struct task_struct p, struct siginfo info);
	257	extern void kdb_meminfo_proc_show(void);
b590cddf	258	#ifdef CONFIG_KALLSYMS
5d5314d6	259	extern const char kdb_walk_kallsyms(loff_t pos);
b590cddf JW	260	#else /* ! CONFIG_KALLSYMS */
	261	static inline const char kdb_walk_kallsyms(loff_t pos)
	262	{
	263	return NULL;
	264	}
	265	#endif /* ! CONFIG_KALLSYMS */
5d5314d6 JW	266	extern char kdb_getstr(char , size_t, char *);
	267
	268	/* Defines for kdb_symbol_print */
	269	#define KDB_SP_SPACEB 0x0001 /* Space before string */
	270	#define KDB_SP_SPACEA 0x0002 /* Space after string */
	271	#define KDB_SP_PAREN 0x0004 /* Parenthesis around string */
	272	#define KDB_SP_VALUE 0x0008 /* Print the value of the address */
	273	#define KDB_SP_SYMSIZE 0x0010 /* Print the size of the symbol */
	274	#define KDB_SP_NEWLINE 0x0020 /* Newline after string */
	275	#define KDB_SP_DEFAULT (KDB_SP_VALUE\|KDB_SP_PAREN)
	276
	277	#define KDB_TSK(cpu) kgdb_info[cpu].task
	278	#define KDB_TSKREGS(cpu) kgdb_info[cpu].debuggerinfo
	279
	280	extern struct task_struct *kdb_curr_task(int);
	281
	282	#define kdb_task_has_cpu(p) (task_curr(p))
	283
	284	/* Simplify coexistence with NPTL */
	285	#define kdb_do_each_thread(g, p) do_each_thread(g, p)
	286	#define kdb_while_each_thread(g, p) while_each_thread(g, p)
	287
	288	#define GFP_KDB (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL)
	289
	290	extern void *debug_kmalloc(size_t size, gfp_t flags);
	291	extern void debug_kfree(void *);
	292	extern void debug_kusage(void);
	293
	294	extern void kdb_set_current_task(struct task_struct *);
	295	extern struct task_struct *kdb_current_task;
	296	#ifdef CONFIG_MODULES
	297	extern struct list_head *kdb_modules;
	298	#endif /* CONFIG_MODULES */
	299
	300	extern char kdb_prompt_str[];
	301
	302	#define KDB_WORD_SIZE ((int)sizeof(unsigned long))
	303
	304	#endif /* CONFIG_KGDB_KDB */
	305	#endif /* !_KDBPRIVATE_H */