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