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debug
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debug_core.h

debug_core.h 2.3 KB
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  1. /*
    2. 

  2.  * Created by: Jason Wessel <jason.wessel@windriver.com>
    3. 

  3.  *
    4. 

  4.  * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
    5. 

  5.  *
    6. 

  6.  * This file is licensed under the terms of the GNU General Public
    7. 

  7.  * License version 2. This program is licensed "as is" without any
    8. 

  8.  * warranty of any kind, whether express or implied.
    9. 

  9.  */
    10. 

  10. 

  11. #ifndef _DEBUG_CORE_H_
    12. 

  12. #define _DEBUG_CORE_H_
    13. 

  13. /*
    14. 

  14.  * These are the private implementation headers between the kernel
    15. 

  15.  * debugger core and the debugger front end code.
    16. 

  16.  */
    17. 

  17. 

  18. /* kernel debug core data structures */
    19. 

  19. struct kgdb_state {
    20. 

  20. 	int			ex_vector;
    21. 

  21. 	int			signo;
    22. 

  22. 	int			err_code;
    23. 

  23. 	int			cpu;
    24. 

  24. 	int			pass_exception;
    25. 

  25. 	unsigned long		thr_query;
    26. 

  26. 	unsigned long		threadid;
    27. 

  27. 	long			kgdb_usethreadid;
    28. 

  28. 	struct pt_regs		*linux_regs;
    29. 

  29. };
    30. 

  30. 

  31. /* Exception state values */
    32. 

  32. #define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */
    33. 

  33. #define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */
    34. 

  34. #define DCPU_IS_SLAVE    0x4 /* Slave cpu enter exception */
    35. 

  35. #define DCPU_SSTEP       0x8 /* CPU is single stepping */
    36. 

  36. 

  37. struct debuggerinfo_struct {
    38. 

  38. 	void			*debuggerinfo;
    39. 

  39. 	struct task_struct	*task;
    40. 

  40. 	int			exception_state;
    41. 

  41. 	int			ret_state;
    42. 

  42. 	int			irq_depth;
    43. 

  43. };
    44. 

  44. 

  45. extern struct debuggerinfo_struct kgdb_info[];
    46. 

  46. 

  47. /* kernel debug core break point routines */
    48. 

  48. extern int dbg_remove_all_break(void);
    49. 

  49. extern int dbg_set_sw_break(unsigned long addr);
    50. 

  50. extern int dbg_remove_sw_break(unsigned long addr);
    51. 

  51. extern int dbg_activate_sw_breakpoints(void);
    52. 

  52. extern int dbg_deactivate_sw_breakpoints(void);
    53. 

  53. 

  54. /* polled character access to i/o module */
    55. 

  55. extern int dbg_io_get_char(void);
    56. 

  56. 

  57. /* stub return value for switching between the gdbstub and kdb */
    58. 

  58. #define DBG_PASS_EVENT -12345
    59. 

  59. /* Switch from one cpu to another */
    60. 

  60. #define DBG_SWITCH_CPU_EVENT -123456
    61. 

  61. extern int dbg_switch_cpu;
    62. 

  62. 

  63. /* gdbstub interface functions */
    64. 

  64. extern int gdb_serial_stub(struct kgdb_state *ks);
    65. 

  65. extern void gdbstub_msg_write(const char *s, int len);
    66. 

  66. 

  67. /* gdbstub functions used for kdb <-> gdbstub transition */
    68. 

  68. extern int gdbstub_state(struct kgdb_state *ks, char *cmd);
    69. 

  69. extern int dbg_kdb_mode;
    70. 

  70. 

  71. #ifdef CONFIG_KGDB_KDB
    72. 

  72. extern int kdb_stub(struct kgdb_state *ks);
    73. 

  73. extern int kdb_parse(const char *cmdstr);
    74. 

  74. #else /* ! CONFIG_KGDB_KDB */
    75. 

  75. static inline int kdb_stub(struct kgdb_state *ks)
    76. 

  76. {
    77. 

  77. 	return DBG_PASS_EVENT;
    78. 

  78. }
    79. 

  79. #endif /* CONFIG_KGDB_KDB */
    80. 

  80. 

  81. #endif /* _DEBUG_CORE_H_ */
    82.