271 lines
7.9 KiB
C++
271 lines
7.9 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <memory>
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#include <boost/serialization/split_member.hpp>
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#include "common/common_types.h"
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#include "core/arm/skyeye_common/arm_regformat.h"
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#include "core/arm/skyeye_common/vfp/asm_vfp.h"
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/// Generic ARM11 CPU interface
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class ARM_Interface : NonCopyable {
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public:
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virtual ~ARM_Interface() {}
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class ThreadContext {
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friend class boost::serialization::access;
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template <class Archive>
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void save(Archive& ar, const unsigned int file_version) const {
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for (auto i = 0; i < 16; i++) {
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auto r = GetCpuRegister(i);
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ar << r;
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}
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for (auto i = 0; i < 16; i++) {
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auto r = GetFpuRegister(i);
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ar << r;
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}
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auto r1 = GetCpsr();
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ar << r1;
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auto r2 = GetFpscr();
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ar << r2;
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auto r3 = GetFpexc();
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ar << r3;
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}
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template <class Archive>
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void load(Archive& ar, const unsigned int file_version) {
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u32 r;
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for (auto i = 0; i < 16; i++) {
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ar >> r;
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SetCpuRegister(i, r);
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}
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for (auto i = 0; i < 16; i++) {
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ar >> r;
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SetFpuRegister(i, r);
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}
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ar >> r;
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SetCpsr(r);
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ar >> r;
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SetFpscr(r);
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ar >> r;
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SetFpexc(r);
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}
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BOOST_SERIALIZATION_SPLIT_MEMBER()
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public:
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virtual ~ThreadContext() = default;
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virtual void Reset() = 0;
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virtual u32 GetCpuRegister(std::size_t index) const = 0;
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virtual void SetCpuRegister(std::size_t index, u32 value) = 0;
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virtual u32 GetCpsr() const = 0;
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virtual void SetCpsr(u32 value) = 0;
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virtual u32 GetFpuRegister(std::size_t index) const = 0;
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virtual void SetFpuRegister(std::size_t index, u32 value) = 0;
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virtual u32 GetFpscr() const = 0;
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virtual void SetFpscr(u32 value) = 0;
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virtual u32 GetFpexc() const = 0;
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virtual void SetFpexc(u32 value) = 0;
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u32 GetStackPointer() const {
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return GetCpuRegister(13);
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}
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void SetStackPointer(u32 value) {
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return SetCpuRegister(13, value);
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}
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u32 GetLinkRegister() const {
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return GetCpuRegister(14);
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}
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void SetLinkRegister(u32 value) {
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return SetCpuRegister(14, value);
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}
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u32 GetProgramCounter() const {
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return GetCpuRegister(15);
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}
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void SetProgramCounter(u32 value) {
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return SetCpuRegister(15, value);
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}
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};
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/// Runs the CPU until an event happens
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virtual void Run() = 0;
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/// Step CPU by one instruction
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virtual void Step() = 0;
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/// Clear all instruction cache
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virtual void ClearInstructionCache() = 0;
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/**
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* Invalidate the code cache at a range of addresses.
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* @param start_address The starting address of the range to invalidate.
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* @param length The length (in bytes) of the range to invalidate.
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*/
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virtual void InvalidateCacheRange(u32 start_address, std::size_t length) = 0;
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/// Notify CPU emulation that page tables have changed
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virtual void PageTableChanged() = 0;
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/**
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* Set the Program Counter to an address
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* @param addr Address to set PC to
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*/
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virtual void SetPC(u32 addr) = 0;
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/*
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* Get the current Program Counter
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* @return Returns current PC
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*/
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virtual u32 GetPC() const = 0;
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/**
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* Get an ARM register
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* @param index Register index (0-15)
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* @return Returns the value in the register
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*/
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virtual u32 GetReg(int index) const = 0;
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/**
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* Set an ARM register
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* @param index Register index (0-15)
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* @param value Value to set register to
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*/
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virtual void SetReg(int index, u32 value) = 0;
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/**
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* Gets the value of a VFP register
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* @param index Register index (0-31)
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* @return Returns the value in the register
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*/
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virtual u32 GetVFPReg(int index) const = 0;
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/**
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* Sets a VFP register to the given value
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* @param index Register index (0-31)
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* @param value Value to set register to
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*/
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virtual void SetVFPReg(int index, u32 value) = 0;
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/**
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* Gets the current value within a given VFP system register
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* @param reg The VFP system register
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* @return The value within the VFP system register
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*/
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virtual u32 GetVFPSystemReg(VFPSystemRegister reg) const = 0;
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/**
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* Sets the VFP system register to the given value
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* @param reg The VFP system register
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* @param value Value to set the VFP system register to
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*/
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virtual void SetVFPSystemReg(VFPSystemRegister reg, u32 value) = 0;
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/**
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* Get the current CPSR register
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* @return Returns the value of the CPSR register
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*/
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virtual u32 GetCPSR() const = 0;
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/**
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* Set the current CPSR register
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* @param cpsr Value to set CPSR to
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*/
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virtual void SetCPSR(u32 cpsr) = 0;
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/**
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* Gets the value stored in a CP15 register.
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* @param reg The CP15 register to retrieve the value from.
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* @return the value stored in the given CP15 register.
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*/
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virtual u32 GetCP15Register(CP15Register reg) const = 0;
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/**
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* Stores the given value into the indicated CP15 register.
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* @param reg The CP15 register to store the value into.
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* @param value The value to store into the CP15 register.
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*/
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virtual void SetCP15Register(CP15Register reg, u32 value) = 0;
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/**
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* Creates a CPU context
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* @note The created context may only be used with this instance.
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*/
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virtual std::unique_ptr<ThreadContext> NewContext() const = 0;
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/**
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* Saves the current CPU context
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* @param ctx Thread context to save
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*/
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virtual void SaveContext(const std::unique_ptr<ThreadContext>& ctx) = 0;
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/**
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* Loads a CPU context
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* @param ctx Thread context to load
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*/
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virtual void LoadContext(const std::unique_ptr<ThreadContext>& ctx) = 0;
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/// Prepare core for thread reschedule (if needed to correctly handle state)
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virtual void PrepareReschedule() = 0;
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private:
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friend class boost::serialization::access;
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template <class Archive>
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void save(Archive& ar, const unsigned int file_version) const {
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for (auto i = 0; i < 15; i++) {
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auto r = GetReg(i);
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ar << r;
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}
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auto pc = GetPC();
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ar << pc;
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auto cpsr = GetCPSR();
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ar << cpsr;
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for (auto i = 0; i < 32; i++) {
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auto r = GetVFPReg(i);
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ar << r;
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}
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for (auto i = 0; i < VFPSystemRegister::VFP_SYSTEM_REGISTER_COUNT; i++) {
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auto r = GetVFPSystemReg(static_cast<VFPSystemRegister>(i));
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ar << r;
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}
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for (auto i = 0; i < CP15Register::CP15_REGISTER_COUNT; i++) {
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auto r = GetCP15Register(static_cast<CP15Register>(i));
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ar << r;
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}
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}
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template <class Archive>
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void load(Archive& ar, const unsigned int file_version) {
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u32 r;
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for (auto i = 0; i < 15; i++) {
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ar >> r;
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SetReg(i, r);
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}
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ar >> r;
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SetPC(r);
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ar >> r;
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SetCPSR(r);
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for (auto i = 0; i < 32; i++) {
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ar >> r;
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SetVFPReg(i, r);
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}
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for (auto i = 0; i < VFPSystemRegister::VFP_SYSTEM_REGISTER_COUNT; i++) {
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ar >> r;
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SetVFPSystemReg(static_cast<VFPSystemRegister>(i), r);
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}
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for (auto i = 0; i < CP15Register::CP15_REGISTER_COUNT; i++) {
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ar >> r;
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SetCP15Register(static_cast<CP15Register>(i), r);
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}
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ClearInstructionCache();
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}
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BOOST_SERIALIZATION_SPLIT_MEMBER()
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};
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