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/*
* ARM GDB support
* arch-specific portion of GDB stub
*
* File : arch_gdb.h(arm)
* 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 __ARM_GDB_H__
#define __ARM_GDB_H__
#include <rtthread.h>
#ifndef RT_GDB_HAVE_HWBP
#define RT_GDB_HAVE_HWBP 0
#endif
#ifndef RT_GDB_HAVE_SWBP
#define RT_GDB_HAVE_SWBP 1
#endif
#if RT_GDB_HAVE_HWBP
#error GDB:No hardware_breakpoint support
#endif
/*
* By doing this as an undefined instruction trap, we force a mode
* switch from SVC to UND mode, allowing us to save full kernel state.
* We also define a GDB_COMPILED_BREAK which can be used to compile
* in breakpoints.
*/
#define BREAK_INSTR_SIZE 4
#define GDB_BREAKINST 0xe7ffdefe
#define GDB_COMPILED_BREAK 0xe7ffdeff
#define CACHE_FLUSH_IS_SAFE 1
#define ARM_GP_REGS 16
#define ARM_FP_REGS 8
#define ARM_EXTRA_REGS 2
#define GDB_MAX_REGS (ARM_GP_REGS + (ARM_FP_REGS * 3) + ARM_EXTRA_REGS)
#define NUMREGBYTES (GDB_MAX_REGS << 2)
//#define BUFMAX ((NUMREGBYTES << 1) + 10)
#define BUFMAX 400
enum regnames {
GDB_R0, /*0*/
GDB_R1, /*1*/
GDB_R2, /*2*/
GDB_R3, /*3*/
GDB_R4, /*4*/
GDB_R5, /*5*/
GDB_R6, /*6*/
GDB_R7, /*7*/
GDB_R8, /*8*/
GDB_R9, /*9*/
GDB_R10, /*10*/
GDB_FP, /*11*/
GDB_IP, /*12*/
GDB_SPT, /*13*/
GDB_LR, /*14*/
GDB_PC, /*15*/
GDB_CPSR = GDB_MAX_REGS-1
};
/* arch */
extern struct gdb_arch arch_gdb_ops;
void gdb_breakpoint();
void gdb_get_register(unsigned long *gdb_regs);
void gdb_put_register(unsigned long *gdb_regs);
void gdb_set_register(void *hw_regs);
int gdb_arch_handle_exception(char *remcom_in_buffer,
char *remcom_out_buffer);
void gdb_flush_icache_range(unsigned long start, unsigned long end);
int gdb_undef_hook(void *regs);
int gdb_handle_exception(int signo, void *regs);
#endif /* __ARM_GDB_H__ */
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