xtensa_register Struct Reference

Register description for GDB stub. More...

#include <gdbstub.h>

Data Fields
uint32_t	val
	Register value.
uint8_t	idx
	GDB register index (for p/P packets)
uint8_t	byte_size
	Size of register.
uint16_t	regno
	Xtensa register number.
int16_t	gpkt_offset
	Offset of this register in GDB G-packet.
int8_t	stack_offset
	Offset of saved register in stack frame.
uint8_t	seqno
	Sequence number.
uint8_t	is_read_only:1
	Set to 1 if register should not be written to during debugging.

Detailed Description

Register description for GDB stub.

Values are based on gdb/gdb/xtensa-config.c in the Xtensa overlay, where registers are defined using XTREG() macro: XTREG(index,ofs,bsz,sz,al,tnum,flg,cp,ty,gr,name,fet,sto,mas,ct,x,y)

Translation: idx : index regno : tnum 0x00xx : General Registers (A0 - A15, PC) 0x01xx : Address Registers (AR0 - AR31/AR63) 0x02xx : Special Registers (access via RSR/WSR) 0x03xx : User Registers (access via RUR/WUR) byte_size : sz gpkt_offset : ofs

Field Documentation

byte_size

uint8_t xtensa_register::byte_size

Size of register.

gpkt_offset

int16_t xtensa_register::gpkt_offset

Offset of this register in GDB G-packet.

-1 if register is not in G-packet.

idx

uint8_t xtensa_register::idx

GDB register index (for p/P packets)

is_read_only

uint8_t xtensa_register::is_read_only

Set to 1 if register should not be written to during debugging.

regno

uint16_t xtensa_register::regno

Xtensa register number.

seqno

uint8_t xtensa_register::seqno

Sequence number.

stack_offset

int8_t xtensa_register::stack_offset

Offset of saved register in stack frame.

0 if not saved in stack frame.

val

uint32_t xtensa_register::val

Register value.

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The documentation for this struct was generated from the following file:

• zephyr/arch/xtensa/gdbstub.h