88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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* Created by: Jason Wessel <jason.wessel@windriver.com>
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*
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* Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved.
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef _DEBUG_CORE_H_
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#define _DEBUG_CORE_H_
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/*
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* These are the private implementation headers between the kernel
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* debugger core and the debugger front end code.
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*/
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/* kernel debug core data structures */
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struct kgdb_state {
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int ex_vector;
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int signo;
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int err_code;
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int cpu;
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int pass_exception;
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unsigned long thr_query;
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unsigned long threadid;
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long kgdb_usethreadid;
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struct pt_regs *linux_regs;
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atomic_t *send_ready;
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};
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/* Exception state values */
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#define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */
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#define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */
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#define DCPU_IS_SLAVE 0x4 /* Slave cpu enter exception */
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#define DCPU_SSTEP 0x8 /* CPU is single stepping */
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struct debuggerinfo_struct {
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void *debuggerinfo;
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struct task_struct *task;
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int exception_state;
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int ret_state;
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int irq_depth;
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int enter_kgdb;
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};
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extern struct debuggerinfo_struct kgdb_info[];
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/* kernel debug core break point routines */
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extern int dbg_remove_all_break(void);
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extern int dbg_set_sw_break(unsigned long addr);
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extern int dbg_remove_sw_break(unsigned long addr);
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extern int dbg_activate_sw_breakpoints(void);
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extern int dbg_deactivate_sw_breakpoints(void);
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/* polled character access to i/o module */
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extern int dbg_io_get_char(void);
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/* stub return value for switching between the gdbstub and kdb */
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#define DBG_PASS_EVENT -12345
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/* Switch from one cpu to another */
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#define DBG_SWITCH_CPU_EVENT -123456
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extern int dbg_switch_cpu;
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/* gdbstub interface functions */
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extern int gdb_serial_stub(struct kgdb_state *ks);
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extern void gdbstub_msg_write(const char *s, int len);
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/* gdbstub functions used for kdb <-> gdbstub transition */
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extern int gdbstub_state(struct kgdb_state *ks, char *cmd);
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extern int dbg_kdb_mode;
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#ifdef CONFIG_KGDB_KDB
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extern int kdb_stub(struct kgdb_state *ks);
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extern int kdb_parse(const char *cmdstr);
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extern int kdb_common_init_state(struct kgdb_state *ks);
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extern int kdb_common_deinit_state(void);
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#define KGDB_KDB_REASON_SYSTEM_NMI KDB_REASON_SYSTEM_NMI
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#else /* ! CONFIG_KGDB_KDB */
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static inline int kdb_stub(struct kgdb_state *ks)
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{
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return DBG_PASS_EVENT;
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}
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#define KGDB_KDB_REASON_SYSTEM_NMI 0
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#endif /* CONFIG_KGDB_KDB */
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#endif /* _DEBUG_CORE_H_ */
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