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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include "common/common_types.h"
#include "core/hle/kernel/vm_manager.h"
/// Generic ARM11 CPU interface
class ARM_Interface : NonCopyable {
public:
virtual ~ARM_Interface() {}
struct ThreadContext {
std::array<u64, 31> cpu_registers;
u64 sp;
u64 pc;
u64 cpsr;
std::array<u128, 32> fpu_registers;
u64 fpscr;
// TODO(bunnei): Fix once we have proper support for tpidrro_el0, etc. in the JIT
VAddr tls_address;
};
/// Runs the CPU until an event happens
virtual void Run() = 0;
/// Step CPU by one instruction
virtual void Step() = 0;
/// Maps a backing memory region for the CPU
virtual void MapBackingMemory(VAddr address, size_t size, u8* memory,
Kernel::VMAPermission perms) = 0;
/// Unmaps a region of memory that was previously mapped using MapBackingMemory
virtual void UnmapMemory(VAddr address, size_t size) = 0;
/// Clear all instruction cache
virtual void ClearInstructionCache() = 0;
/// Notify CPU emulation that page tables have changed
virtual void PageTableChanged() = 0;
/**
* Set the Program Counter to an address
* @param addr Address to set PC to
*/
virtual void SetPC(u64 addr) = 0;
/*
* Get the current Program Counter
* @return Returns current PC
*/
virtual u64 GetPC() const = 0;
/**
* Get an ARM register
* @param index Register index
* @return Returns the value in the register
*/
virtual u64 GetReg(int index) const = 0;
/**
* Set an ARM register
* @param index Register index
* @param value Value to set register to
*/
virtual void SetReg(int index, u64 value) = 0;
virtual u128 GetExtReg(int index) const = 0;
virtual void SetExtReg(int index, u128 value) = 0;
/**
* Gets the value of a VFP register
* @param index Register index (0-31)
* @return Returns the value in the register
*/
virtual u32 GetVFPReg(int index) const = 0;
/**
* Sets a VFP register to the given value
* @param index Register index (0-31)
* @param value Value to set register to
*/
virtual void SetVFPReg(int index, u32 value) = 0;
/**
* Get the current CPSR register
* @return Returns the value of the CPSR register
*/
virtual u32 GetCPSR() const = 0;
/**
* Set the current CPSR register
* @param cpsr Value to set CPSR to
*/
virtual void SetCPSR(u32 cpsr) = 0;
virtual VAddr GetTlsAddress() const = 0;
virtual void SetTlsAddress(VAddr address) = 0;
virtual u64 GetTPIDR_EL0() const = 0;
virtual void SetTPIDR_EL0(u64 value) = 0;
/**
* Saves the current CPU context
* @param ctx Thread context to save
*/
virtual void SaveContext(ThreadContext& ctx) = 0;
/**
* Loads a CPU context
* @param ctx Thread context to load
*/
virtual void LoadContext(const ThreadContext& ctx) = 0;
virtual void ClearExclusiveState() = 0;
/// Prepare core for thread reschedule (if needed to correctly handle state)
virtual void PrepareReschedule() = 0;
};
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