mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-26 00:41:08 +00:00
104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
/*
|
|
* \brief CPU state
|
|
* \author Norman Feske
|
|
* \author Stefan Kalkowski
|
|
* \author Martin Stein
|
|
* \date 2011-05-06
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2011-2017 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__SPEC__ARM__CPU__CPU_STATE_H_
|
|
#define _INCLUDE__SPEC__ARM__CPU__CPU_STATE_H_
|
|
|
|
/* Genode includes */
|
|
#include <base/stdint.h>
|
|
|
|
namespace Genode {
|
|
|
|
struct Cpu_state;
|
|
struct Cpu_state_modes;
|
|
}
|
|
|
|
|
|
/**
|
|
* Basic CPU state
|
|
*/
|
|
struct Genode::Cpu_state
|
|
{
|
|
/**
|
|
* Native exception types
|
|
*/
|
|
enum Cpu_exception {
|
|
RESET = 1,
|
|
UNDEFINED_INSTRUCTION = 2,
|
|
SUPERVISOR_CALL = 3,
|
|
PREFETCH_ABORT = 4,
|
|
DATA_ABORT = 5,
|
|
INTERRUPT_REQUEST = 6,
|
|
FAST_INTERRUPT_REQUEST = 7,
|
|
};
|
|
|
|
/**
|
|
* Registers
|
|
*/
|
|
struct
|
|
{
|
|
/* general purpose register 0..12 */
|
|
addr_t r0 = 0;
|
|
addr_t r1 = 0;
|
|
addr_t r2 = 0;
|
|
addr_t r3 = 0;
|
|
addr_t r4 = 0;
|
|
addr_t r5 = 0;
|
|
addr_t r6 = 0;
|
|
addr_t r7 = 0;
|
|
addr_t r8 = 0;
|
|
addr_t r9 = 0;
|
|
addr_t r10 = 0;
|
|
addr_t r11 = 0;
|
|
addr_t r12 = 0;
|
|
addr_t sp = 0; /* stack pointer */
|
|
addr_t lr = 0; /* link register */
|
|
addr_t ip = 0; /* instruction pointer */
|
|
addr_t cpsr = 0; /* current program status register */
|
|
addr_t cpu_exception = 0; /* last hardware exception */
|
|
};
|
|
};
|
|
|
|
|
|
/**
|
|
* Extend CPU state by banked registers
|
|
*/
|
|
struct Genode::Cpu_state_modes : Cpu_state
|
|
{
|
|
/**
|
|
* Common banked registers for exception modes
|
|
*/
|
|
struct Mode_state {
|
|
|
|
enum Mode {
|
|
UND, /* Undefined */
|
|
SVC, /* Supervisor */
|
|
ABORT, /* Abort */
|
|
IRQ, /* Interrupt */
|
|
FIQ, /* Fast Interrupt */
|
|
MAX
|
|
};
|
|
|
|
addr_t spsr; /* saved program status register */
|
|
addr_t sp; /* banked stack pointer */
|
|
addr_t lr; /* banked link register */
|
|
};
|
|
|
|
Mode_state mode[Mode_state::MAX]; /* exception mode registers */
|
|
addr_t fiq_r[5] { 0, 0, 0, 0, 0 }; /* fast-interrupt mode r8-r12 */
|
|
};
|
|
|
|
#endif /* _INCLUDE__SPEC__ARM__CPU__CPU_STATE_H_ */
|