Architecture-specific gdbstub APIs

Functions
void	arch_gdb_init (void)
	Architecture layer debug start.
void	arch_gdb_continue (void)
	Continue running program.
void	arch_gdb_step (void)
	Continue with one step.
size_t	arch_gdb_reg_readall (struct gdb_ctx *ctx, uint8_t *buf, size_t buflen)
	Read all registers, and outputs as hexadecimal string.
size_t	arch_gdb_reg_writeall (struct gdb_ctx *ctx, uint8_t *hex, size_t hexlen)
	Take a hexadecimal string and update all registers.
size_t	arch_gdb_reg_readone (struct gdb_ctx *ctx, uint8_t *buf, size_t buflen, uint32_t regno)
	Read one register, and outputs as hexadecimal string.
size_t	arch_gdb_reg_writeone (struct gdb_ctx *ctx, uint8_t *hex, size_t hexlen, uint32_t regno)
	Take a hexadecimal string and update one register.
int	arch_gdb_add_breakpoint (struct gdb_ctx *ctx, uint8_t type, uintptr_t addr, uint32_t kind)
	Add breakpoint or watchpoint.
int	arch_gdb_remove_breakpoint (struct gdb_ctx *ctx, uint8_t type, uintptr_t addr, uint32_t kind)
	Remove breakpoint or watchpoint.

Detailed Description

Function Documentation

arch_gdb_add_breakpoint()

int arch_gdb_add_breakpoint	(	struct gdb_ctx *	ctx,
		uint8_t	type,
		uintptr_t	addr,
		uint32_t	kind
	)

#include <zephyr/arch/arch_interface.h>

Add breakpoint or watchpoint.

Parameters

ctx	GDB context
type	Breakpoint or watchpoint type
addr	Address of breakpoint or watchpoint
kind	Size of breakpoint/watchpoint in bytes

Return values

0	Operation successful
-1	Error encountered
-2	Not supported

arch_gdb_continue()

void arch_gdb_continue

(

void

)

#include <zephyr/arch/arch_interface.h>

Continue running program.

Continue software execution.

arch_gdb_init()

void arch_gdb_init

(

void

)

#include <zephyr/arch/arch_interface.h>

Architecture layer debug start.

This function is called by gdb_init()

arch_gdb_reg_readall()

size_t arch_gdb_reg_readall	(	struct gdb_ctx *	ctx,
		uint8_t *	buf,
		size_t	buflen
	)

#include <zephyr/arch/arch_interface.h>

Read all registers, and outputs as hexadecimal string.

This reads all CPU registers and outputs as hexadecimal string. The output string must be parsable by GDB.

Parameters

ctx	GDB context
buf	Buffer to output hexadecimal string.
buflen	Length of buffer.

Returns

Length of hexadecimal string written. Return 0 if error or not supported.

arch_gdb_reg_readone()

size_t arch_gdb_reg_readone	(	struct gdb_ctx *	ctx,
		uint8_t *	buf,
		size_t	buflen,
		uint32_t	regno
	)

#include <zephyr/arch/arch_interface.h>

Read one register, and outputs as hexadecimal string.

This reads one CPU register and outputs as hexadecimal string. The output string must be parsable by GDB.

Parameters

ctx	GDB context
buf	Buffer to output hexadecimal string.
buflen	Length of buffer.
regno	Register number

Returns

Length of hexadecimal string written. Return 0 if error or not supported.

arch_gdb_reg_writeall()

size_t arch_gdb_reg_writeall	(	struct gdb_ctx *	ctx,
		uint8_t *	hex,
		size_t	hexlen
	)

#include <zephyr/arch/arch_interface.h>

Take a hexadecimal string and update all registers.

This takes in a hexadecimal string as presented from GDB, and updates all CPU registers with new values.

Parameters

ctx	GDB context
hex	Input hexadecimal string.
hexlen	Length of hexadecimal string.

Returns

Length of hexadecimal string parsed. Return 0 if error or not supported.

arch_gdb_reg_writeone()

size_t arch_gdb_reg_writeone	(	struct gdb_ctx *	ctx,
		uint8_t *	hex,
		size_t	hexlen,
		uint32_t	regno
	)

#include <zephyr/arch/arch_interface.h>

Take a hexadecimal string and update one register.

This takes in a hexadecimal string as presented from GDB, and updates one CPU registers with new value.

Parameters

ctx	GDB context
hex	Input hexadecimal string.
hexlen	Length of hexadecimal string.
regno	Register number

Returns

Length of hexadecimal string parsed. Return 0 if error or not supported.

arch_gdb_remove_breakpoint()

int arch_gdb_remove_breakpoint	(	struct gdb_ctx *	ctx,
		uint8_t	type,
		uintptr_t	addr,
		uint32_t	kind
	)

#include <zephyr/arch/arch_interface.h>

Remove breakpoint or watchpoint.

Parameters

ctx	GDB context
type	Breakpoint or watchpoint type
addr	Address of breakpoint or watchpoint
kind	Size of breakpoint/watchpoint in bytes

Return values

0	Operation successful
-1	Error encountered
-2	Not supported

arch_gdb_step()

void arch_gdb_step

(

void

)

#include <zephyr/arch/arch_interface.h>

Continue with one step.

Continue software execution until reaches the next statement.