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/*
* This provides the functions that GDB needs to share between
* different portions.
*
* GDB stub.
*
* Migarte form linux to rt-thread by Wzyy2
* Original edition : KGDB stub
*
* File : gdb_stub.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2014-07-04 Wzyy2 first version
*/
#ifndef __GDB_STUB_H__
#define __GDB_STUB_H__
#include <rtthread.h>
#include <arch_gdb.h>
#ifndef RT_GDB_MAX_BREAKPOINTS
#define GDB_MAX_BREAKPOINTS 20
#else
#define GDB_MAX_BREAKPOINTS RT_GDB_MAX_BREAKPOINTS
#endif
// Signal definitions
#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt */ //irq or fiq
#define SIGQUIT 3 /* quit */
#define SIGILL 4 /* illegal instruction (not reset when caught) */
#define SIGTRAP 5 /* trace trap (not reset when caught) */
#define SIGIOT 6 /* IOT instruction */
#define SIGABRT 6 /* used by abort, replace SIGIOT in the future */
#define SIGEMT 7 /* EMT instruction */
#define SIGFPE 8 /* floating point exception */
#define SIGKILL 9 /* kill (cannot be caught or ignored) */
#define SIGBUS 10 /* bus error */ //abort or reserved
#define SIGSEGV 11 /* segmentation violation */
#define SIGSYS 12 /* bad argument to system call */
#define SIGPIPE 13 /* write on a pipe with no one to read it */
#define SIGALRM 14 /* alarm clock */
#define SIGTERM 15 /* software termination signal from kill */
enum gdb_bptype {
BP_BREAKPOINT = 0,
BP_HARDWARE_BREAKPOINT,
BP_WRITE_WATCHPOINT,
BP_READ_WATCHPOINT,
BP_ACCESS_WATCHPOINT,
BP_POKE_BREAKPOINT,
};
enum gdb_bpstate {
BP_UNDEFINED = 0,
BP_REMOVED,
BP_SET,
BP_ACTIVE
};
struct gdb_bkpt {
unsigned long bpt_addr;
unsigned char saved_instr[BREAK_INSTR_SIZE];
enum gdb_bptype type;
enum gdb_bpstate state;
};
/**
* struct gdb_arch - Describe architecture specific values.
* @gdb_bpt_instr: The instruction to trigger a breakpoint.
* @flags: Flags for the breakpoint, currently just %GDB_HW_BREAKPOINT.
* @set_hw_breakpoint: Allow an architecture to specify how to set a hardware
* breakpoint.
* @remove_hw_breakpoint: Allow an architecture to specify how to remove a
* hardware breakpoint.
* @remove_all_hw_break: Allow an architecture to specify how to remove all
* hardware breakpoints.
*/
struct gdb_arch {
unsigned char gdb_bpt_instr[BREAK_INSTR_SIZE];
unsigned long flags;
int (*set_hw_breakpoint)(unsigned long, int, enum gdb_bptype);
int (*remove_hw_breakpoint)(unsigned long, int, enum gdb_bptype);
void (*remove_all_hw_break)(void);
};
/**
* struct gdb_io - Describe the interface for an I/O driver to talk with KGDB.
* @read_char: Pointer to a function that will return one char.
* @write_char: Pointer to a function that will write one char.
* @flush: Pointer to a function that will flush any pending writes.
* @init: Pointer to a function that will initialize the device.
*/
struct gdb_io {
int (*read_char) (void);
void (*write_char) (char);
void (*flush) (void);
int (*init) (void);
};
extern int gdb_connected;
extern void* volatile gdb_mem_fault_handler;
int gdb_hex2long(char **ptr, unsigned long *long_val);
int gdb_mem2hex(char *mem, char *buf, int count);
int gdb_hex2mem(char *buf, char *mem, int count);
int gdb_ebin2mem(char *buf, char *mem, int count);
int gdb_set_sw_break(unsigned long addr);
int gdb_remove_sw_break(unsigned long addr);
int gdb_isremovedbreak(unsigned long addr);
void gdb_console_write(const char *s, unsigned count);
int gdb_handle_exception(int signo, void *regs);
/* hal */
extern struct gdb_io gdb_io_ops;
extern rt_device_t gdb_dev;
void gdb_start();
void gdb_set_device(const char* device_name);
#endif /* __GDB_STUB_H__ */
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