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/*
* 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 ;
} ;
/* 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 ;
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int ret_state ;
int irq_depth ;
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int enter_kgdb ;
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} ;
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 ) ;
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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 ;
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/* gdbstub interface functions */
extern int gdb_serial_stub ( struct kgdb_state * ks ) ;
extern void gdbstub_msg_write ( const char * s , int len ) ;
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/* gdbstub functions used for kdb <-> gdbstub transition */
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
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 ) ;
extern int kdb_common_deinit_state ( void ) ;
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# else /* ! CONFIG_KGDB_KDB */
static inline int kdb_stub ( struct kgdb_state * ks )
{
return DBG_PASS_EVENT ;
}
# endif /* CONFIG_KGDB_KDB */
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# endif /* _DEBUG_CORE_H_ */