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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; | |
8daaa5f8 | 29 | atomic_t *send_ready; |
53197fc4 JW |
30 | }; |
31 | ||
32 | /* Exception state values */ | |
33 | #define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */ | |
34 | #define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */ | |
35 | #define DCPU_IS_SLAVE 0x4 /* Slave cpu enter exception */ | |
36 | #define DCPU_SSTEP 0x8 /* CPU is single stepping */ | |
37 | ||
38 | struct debuggerinfo_struct { | |
39 | void *debuggerinfo; | |
40 | struct task_struct *task; | |
41 | int exception_state; | |
dcc78711 JW |
42 | int ret_state; |
43 | int irq_depth; | |
dfee3a7b | 44 | int enter_kgdb; |
53197fc4 JW |
45 | }; |
46 | ||
47 | extern struct debuggerinfo_struct kgdb_info[]; | |
48 | ||
49 | /* kernel debug core break point routines */ | |
50 | extern int dbg_remove_all_break(void); | |
51 | extern int dbg_set_sw_break(unsigned long addr); | |
52 | extern int dbg_remove_sw_break(unsigned long addr); | |
53 | extern int dbg_activate_sw_breakpoints(void); | |
dcc78711 JW |
54 | extern int dbg_deactivate_sw_breakpoints(void); |
55 | ||
56 | /* polled character access to i/o module */ | |
57 | extern int dbg_io_get_char(void); | |
58 | ||
59 | /* stub return value for switching between the gdbstub and kdb */ | |
60 | #define DBG_PASS_EVENT -12345 | |
61 | /* Switch from one cpu to another */ | |
62 | #define DBG_SWITCH_CPU_EVENT -123456 | |
63 | extern int dbg_switch_cpu; | |
53197fc4 JW |
64 | |
65 | /* gdbstub interface functions */ | |
66 | extern int gdb_serial_stub(struct kgdb_state *ks); | |
67 | extern void gdbstub_msg_write(const char *s, int len); | |
68 | ||
dcc78711 JW |
69 | /* gdbstub functions used for kdb <-> gdbstub transition */ |
70 | extern int gdbstub_state(struct kgdb_state *ks, char *cmd); | |
a0de055c | 71 | extern int dbg_kdb_mode; |
dcc78711 JW |
72 | |
73 | #ifdef CONFIG_KGDB_KDB | |
74 | extern int kdb_stub(struct kgdb_state *ks); | |
a0de055c | 75 | extern int kdb_parse(const char *cmdstr); |
00370b8f MK |
76 | extern int kdb_common_init_state(struct kgdb_state *ks); |
77 | extern int kdb_common_deinit_state(void); | |
8daaa5f8 | 78 | #define KGDB_KDB_REASON_SYSTEM_NMI KDB_REASON_SYSTEM_NMI |
dcc78711 JW |
79 | #else /* ! CONFIG_KGDB_KDB */ |
80 | static inline int kdb_stub(struct kgdb_state *ks) | |
81 | { | |
82 | return DBG_PASS_EVENT; | |
83 | } | |
8daaa5f8 | 84 | #define KGDB_KDB_REASON_SYSTEM_NMI 0 |
dcc78711 JW |
85 | #endif /* CONFIG_KGDB_KDB */ |
86 | ||
53197fc4 | 87 | #endif /* _DEBUG_CORE_H_ */ |