2 * Created by: Jason Wessel <jason.wessel@windriver.com>
4 * Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved.
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.
11 #ifndef _DEBUG_CORE_H_
12 #define _DEBUG_CORE_H_
14 * These are the private implementation headers between the kernel
15 * debugger core and the debugger front end code.
18 /* kernel debug core data structures */
25 unsigned long thr_query;
26 unsigned long threadid;
27 long kgdb_usethreadid;
28 struct pt_regs *linux_regs;
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 */
37 struct debuggerinfo_struct {
39 struct task_struct *task;
46 extern struct debuggerinfo_struct kgdb_info[];
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);
53 extern int dbg_deactivate_sw_breakpoints(void);
55 /* polled character access to i/o module */
56 extern int dbg_io_get_char(void);
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;
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);
68 /* gdbstub functions used for kdb <-> gdbstub transition */
69 extern int gdbstub_state(struct kgdb_state *ks, char *cmd);
70 extern int dbg_kdb_mode;
72 #ifdef CONFIG_KGDB_KDB
73 extern int kdb_stub(struct kgdb_state *ks);
74 extern int kdb_parse(const char *cmdstr);
75 #else /* ! CONFIG_KGDB_KDB */
76 static inline int kdb_stub(struct kgdb_state *ks)
78 return DBG_PASS_EVENT;
80 #endif /* CONFIG_KGDB_KDB */
82 #endif /* _DEBUG_CORE_H_ */