kgdb.c File Reference

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/kgdb.h>
#include <linux/smp.h>
#include <linux/signal.h>
#include <linux/ptrace.h>
#include <linux/kdebug.h>
#include <asm/current.h>
#include <asm/processor.h>
#include <asm/machdep.h>
#include <asm/debug.h>
#include <linux/slab.h>

Go to the source code of this file.

Data Structures
struct	hard_trap_info

Macros
#define	PACK64(ptr, src)   do { *(ptr++) = (src); } while (0)
#define	PACK32(ptr, src)
#define	GDB_SIZEOF_REG   sizeof(unsigned long)
#define	GDB_SIZEOF_REG_U32   sizeof(u32)
#define	GDB_SIZEOF_FLOAT_REG   sizeof(u64)

Functions
int	kgdb_skipexception (int exception, struct pt_regs *regs)
void	sleeping_thread_to_gdb_regs (unsigned long *gdb_regs, struct task_struct *p)
char *	dbg_get_reg (int regno, void *mem, struct pt_regs *regs)
int	dbg_set_reg (int regno, void *mem, struct pt_regs *regs)
void	kgdb_arch_set_pc (struct pt_regs *regs, unsigned long pc)
int	kgdb_arch_handle_exception (int vector, int signo, int err_code, char *remcom_in_buffer, char *remcom_out_buffer, struct pt_regs *linux_regs)
int	kgdb_arch_init (void)
void	kgdb_arch_exit (void)

Variables
struct dbg_reg_def_t	dbg_reg_def [DBG_MAX_REG_NUM]
struct kgdb_arch	arch_kgdb_ops

Macro Definition Documentation

#define GDB_SIZEOF_FLOAT_REG   sizeof(u64)

Definition at line 269 of file kgdb.c.

#define GDB_SIZEOF_REG   sizeof(unsigned long)

Definition at line 263 of file kgdb.c.

#define GDB_SIZEOF_REG_U32   sizeof(u32)

Definition at line 264 of file kgdb.c.

#define PACK32	(		ptr,
			src
	)

Value:

do {          \
	u32 *ptr32;                   \
    ptr32 = (u32 *)ptr;           \
    *(ptr32++) = (src);           \
    ptr = (unsigned long *)ptr32; \
    } while (0)

Definition at line 213 of file kgdb.c.

#define PACK64	(		ptr,
			src
	)		do { *(ptr++) = (src); } while (0)

Definition at line 211 of file kgdb.c.

Function Documentation

char* dbg_get_reg	(	int	regno,
		void *	mem,
		struct pt_regs *	regs
	)

Definition at line 348 of file kgdb.c.

int dbg_set_reg	(	int	regno,
		void *	mem,
		struct pt_regs *	regs
	)

Definition at line 374 of file kgdb.c.

void kgdb_arch_exit

(

void

)

Definition at line 485 of file kgdb.c.

int kgdb_arch_handle_exception	(	int	vector,
		int	signo,
		int	err_code,
		char *	remcom_in_buffer,
		char *	remcom_out_buffer,
		struct pt_regs *	linux_regs
	)

Definition at line 407 of file kgdb.c.

int kgdb_arch_init

(

void

)

Definition at line 464 of file kgdb.c.

void kgdb_arch_set_pc	(	struct pt_regs *	regs,
		unsigned long	pc
	)

Definition at line 399 of file kgdb.c.

int kgdb_skipexception	(	int	exception,
		struct pt_regs *	regs
	)

kgdb_skipexception - Bail out of KGDB when we've been triggered.

Exceptions

Exception vector number : Current &struct pt_regs.

On some architectures we need to skip a breakpoint exception when it occurs after a breakpoint has been removed.

Definition at line 115 of file kgdb.c.

void sleeping_thread_to_gdb_regs	(	unsigned long *	gdb_regs,
		struct task_struct *	p
	)

Definition at line 220 of file kgdb.c.

Variable Documentation

struct kgdb_arch arch_kgdb_ops

Initial value:

= {
    .gdb_bpt_instr = {0x7d, 0x82, 0x10, 0x08},
}

Definition at line 447 of file kgdb.c.

struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM]

Definition at line 272 of file kgdb.c.