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