Jason Wessel | 53197fc | 2010-04-02 11:48:03 -0500 | [diff] [blame] | 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; |
Mike Travis | 8daaa5f | 2013-10-02 10:14:18 -0500 | [diff] [blame] | 29 | atomic_t *send_ready; |
Jason Wessel | 53197fc | 2010-04-02 11:48:03 -0500 | [diff] [blame] | 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; |
Jason Wessel | dcc7871 | 2010-05-20 21:04:21 -0500 | [diff] [blame] | 42 | int ret_state; |
| 43 | int irq_depth; |
Jason Wessel | dfee3a7 | 2010-05-21 08:46:00 -0500 | [diff] [blame] | 44 | int enter_kgdb; |
Jason Wessel | 53197fc | 2010-04-02 11:48:03 -0500 | [diff] [blame] | 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); |
Jason Wessel | dcc7871 | 2010-05-20 21:04:21 -0500 | [diff] [blame] | 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; |
Jason Wessel | 53197fc | 2010-04-02 11:48:03 -0500 | [diff] [blame] | 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 | |
Jason Wessel | dcc7871 | 2010-05-20 21:04:21 -0500 | [diff] [blame] | 69 | /* gdbstub functions used for kdb <-> gdbstub transition */ |
| 70 | extern int gdbstub_state(struct kgdb_state *ks, char *cmd); |
Jason Wessel | a0de055 | 2010-05-20 21:04:24 -0500 | [diff] [blame] | 71 | extern int dbg_kdb_mode; |
Jason Wessel | dcc7871 | 2010-05-20 21:04:21 -0500 | [diff] [blame] | 72 | |
| 73 | #ifdef CONFIG_KGDB_KDB |
| 74 | extern int kdb_stub(struct kgdb_state *ks); |
Jason Wessel | a0de055 | 2010-05-20 21:04:24 -0500 | [diff] [blame] | 75 | extern int kdb_parse(const char *cmdstr); |
Matt Klein | 00370b8 | 2013-01-02 13:20:49 -0800 | [diff] [blame] | 76 | extern int kdb_common_init_state(struct kgdb_state *ks); |
| 77 | extern int kdb_common_deinit_state(void); |
Mike Travis | 8daaa5f | 2013-10-02 10:14:18 -0500 | [diff] [blame] | 78 | #define KGDB_KDB_REASON_SYSTEM_NMI KDB_REASON_SYSTEM_NMI |
Jason Wessel | dcc7871 | 2010-05-20 21:04:21 -0500 | [diff] [blame] | 79 | #else /* ! CONFIG_KGDB_KDB */ |
| 80 | static inline int kdb_stub(struct kgdb_state *ks) |
| 81 | { |
| 82 | return DBG_PASS_EVENT; |
| 83 | } |
Mike Travis | 8daaa5f | 2013-10-02 10:14:18 -0500 | [diff] [blame] | 84 | #define KGDB_KDB_REASON_SYSTEM_NMI 0 |
Jason Wessel | dcc7871 | 2010-05-20 21:04:21 -0500 | [diff] [blame] | 85 | #endif /* CONFIG_KGDB_KDB */ |
| 86 | |
Jason Wessel | 53197fc | 2010-04-02 11:48:03 -0500 | [diff] [blame] | 87 | #endif /* _DEBUG_CORE_H_ */ |