133 lines
3.6 KiB
C++
133 lines
3.6 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 "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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struct ThreadContext {
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u32 cpu_registers[13];
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u32 sp;
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u32 lr;
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u32 pc;
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u32 cpsr;
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u32 fpu_registers[64];
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u32 fpscr;
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u32 fpexc;
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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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/// 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) = 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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* 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(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 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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};
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