1#ifndef _KDB_H
2#define _KDB_H
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15
16#include <linux/list.h>
17
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21
22
23#define KDB_ENABLE_NO_ARGS_SHIFT 10
24
25typedef enum {
26 KDB_ENABLE_ALL = (1 << 0),
27 KDB_ENABLE_MEM_READ = (1 << 1),
28 KDB_ENABLE_MEM_WRITE = (1 << 2),
29 KDB_ENABLE_REG_READ = (1 << 3),
30 KDB_ENABLE_REG_WRITE = (1 << 4),
31 KDB_ENABLE_INSPECT = (1 << 5),
32 KDB_ENABLE_FLOW_CTRL = (1 << 6),
33 KDB_ENABLE_SIGNAL = (1 << 7),
34 KDB_ENABLE_REBOOT = (1 << 8),
35
36
37
38
39 KDB_ENABLE_ALWAYS_SAFE = (1 << 9),
40 KDB_ENABLE_MASK = (1 << KDB_ENABLE_NO_ARGS_SHIFT) - 1,
41
42 KDB_ENABLE_ALL_NO_ARGS = KDB_ENABLE_ALL << KDB_ENABLE_NO_ARGS_SHIFT,
43 KDB_ENABLE_MEM_READ_NO_ARGS = KDB_ENABLE_MEM_READ
44 << KDB_ENABLE_NO_ARGS_SHIFT,
45 KDB_ENABLE_MEM_WRITE_NO_ARGS = KDB_ENABLE_MEM_WRITE
46 << KDB_ENABLE_NO_ARGS_SHIFT,
47 KDB_ENABLE_REG_READ_NO_ARGS = KDB_ENABLE_REG_READ
48 << KDB_ENABLE_NO_ARGS_SHIFT,
49 KDB_ENABLE_REG_WRITE_NO_ARGS = KDB_ENABLE_REG_WRITE
50 << KDB_ENABLE_NO_ARGS_SHIFT,
51 KDB_ENABLE_INSPECT_NO_ARGS = KDB_ENABLE_INSPECT
52 << KDB_ENABLE_NO_ARGS_SHIFT,
53 KDB_ENABLE_FLOW_CTRL_NO_ARGS = KDB_ENABLE_FLOW_CTRL
54 << KDB_ENABLE_NO_ARGS_SHIFT,
55 KDB_ENABLE_SIGNAL_NO_ARGS = KDB_ENABLE_SIGNAL
56 << KDB_ENABLE_NO_ARGS_SHIFT,
57 KDB_ENABLE_REBOOT_NO_ARGS = KDB_ENABLE_REBOOT
58 << KDB_ENABLE_NO_ARGS_SHIFT,
59 KDB_ENABLE_ALWAYS_SAFE_NO_ARGS = KDB_ENABLE_ALWAYS_SAFE
60 << KDB_ENABLE_NO_ARGS_SHIFT,
61 KDB_ENABLE_MASK_NO_ARGS = KDB_ENABLE_MASK << KDB_ENABLE_NO_ARGS_SHIFT,
62
63 KDB_REPEAT_NO_ARGS = 0x40000000,
64 KDB_REPEAT_WITH_ARGS = 0x80000000,
65} kdb_cmdflags_t;
66
67typedef int (*kdb_func_t)(int, const char **);
68
69
70typedef struct _kdbtab {
71 char *name;
72 kdb_func_t func;
73 char *usage;
74 char *help;
75 short minlen;
76 kdb_cmdflags_t flags;
77 struct list_head list_node;
78} kdbtab_t;
79
80#ifdef CONFIG_KGDB_KDB
81#include <linux/init.h>
82#include <linux/sched.h>
83#include <linux/atomic.h>
84
85#define KDB_POLL_FUNC_MAX 5
86extern int kdb_poll_idx;
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88
89
90
91
92extern int kdb_initial_cpu;
93
94
95
96#define KDB_MAXARGS 16
97
98
99#define KDB_NOTFOUND (-1)
100#define KDB_ARGCOUNT (-2)
101#define KDB_BADWIDTH (-3)
102#define KDB_BADRADIX (-4)
103#define KDB_NOTENV (-5)
104#define KDB_NOENVVALUE (-6)
105#define KDB_NOTIMP (-7)
106#define KDB_ENVFULL (-8)
107#define KDB_ENVBUFFULL (-9)
108#define KDB_TOOMANYBPT (-10)
109#define KDB_TOOMANYDBREGS (-11)
110#define KDB_DUPBPT (-12)
111#define KDB_BPTNOTFOUND (-13)
112#define KDB_BADMODE (-14)
113#define KDB_BADINT (-15)
114#define KDB_INVADDRFMT (-16)
115#define KDB_BADREG (-17)
116#define KDB_BADCPUNUM (-18)
117#define KDB_BADLENGTH (-19)
118#define KDB_NOBP (-20)
119#define KDB_BADADDR (-21)
120#define KDB_NOPERM (-22)
121
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126
127
128extern const char *kdb_diemsg;
129
130#define KDB_FLAG_EARLYKDB (1 << 0)
131#define KDB_FLAG_CATASTROPHIC (1 << 1)
132#define KDB_FLAG_CMD_INTERRUPT (1 << 2)
133#define KDB_FLAG_NOIPI (1 << 3)
134#define KDB_FLAG_NO_CONSOLE (1 << 5)
135
136#define KDB_FLAG_NO_VT_CONSOLE (1 << 6)
137
138#define KDB_FLAG_NO_I8042 (1 << 7)
139
140
141extern unsigned int kdb_flags;
142
143extern void kdb_save_flags(void);
144extern void kdb_restore_flags(void);
145
146#define KDB_FLAG(flag) (kdb_flags & KDB_FLAG_##flag)
147#define KDB_FLAG_SET(flag) ((void)(kdb_flags |= KDB_FLAG_##flag))
148#define KDB_FLAG_CLEAR(flag) ((void)(kdb_flags &= ~KDB_FLAG_##flag))
149
150
151
152
153
154
155
156typedef enum {
157 KDB_REASON_ENTER = 1,
158 KDB_REASON_ENTER_SLAVE,
159 KDB_REASON_BREAK,
160 KDB_REASON_DEBUG,
161 KDB_REASON_OOPS,
162 KDB_REASON_SWITCH,
163 KDB_REASON_KEYBOARD,
164 KDB_REASON_NMI,
165 KDB_REASON_RECURSE,
166
167 KDB_REASON_SSTEP,
168 KDB_REASON_SYSTEM_NMI,
169} kdb_reason_t;
170
171enum kdb_msgsrc {
172 KDB_MSGSRC_INTERNAL,
173 KDB_MSGSRC_PRINTK,
174};
175
176extern int kdb_trap_printk;
177extern int kdb_printf_cpu;
178extern __printf(2, 0) int vkdb_printf(enum kdb_msgsrc src, const char *fmt,
179 va_list args);
180extern __printf(1, 2) int kdb_printf(const char *, ...);
181typedef __printf(1, 2) int (*kdb_printf_t)(const char *, ...);
182
183extern void kdb_init(int level);
184
185
186typedef int (*get_char_func)(void);
187extern get_char_func kdb_poll_funcs[];
188extern int kdb_get_kbd_char(void);
189
190static inline
191int kdb_process_cpu(const struct task_struct *p)
192{
193 unsigned int cpu = task_cpu(p);
194 if (cpu > num_possible_cpus())
195 cpu = 0;
196 return cpu;
197}
198
199#ifdef CONFIG_KALLSYMS
200extern const char *kdb_walk_kallsyms(loff_t *pos);
201#else
202static inline const char *kdb_walk_kallsyms(loff_t *pos)
203{
204 return NULL;
205}
206#endif
207
208
209extern int kdb_register(kdbtab_t *cmd);
210extern void kdb_unregister(kdbtab_t *cmd);
211#else
212static inline __printf(1, 2) int kdb_printf(const char *fmt, ...) { return 0; }
213static inline void kdb_init(int level) {}
214static inline int kdb_register(kdbtab_t *cmd) { return 0; }
215static inline void kdb_unregister(kdbtab_t *cmd) {}
216#endif
217enum {
218 KDB_NOT_INITIALIZED,
219 KDB_INIT_EARLY,
220 KDB_INIT_FULL,
221};
222
223extern int kdbgetintenv(const char *, int *);
224extern int kdb_set(int, const char **);
225
226#endif
227