53a22b84da
Fixed typo (make protected member public) Added license header back in. I originally removed this because I mostly rewrote the file, but meh ARM: Fixed a type error in dyncom interpreter. ARM: Updated dyncom to use unique_ptr for internal ARM state.
165 lines
4 KiB
C++
165 lines
4 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "core/arm/skyeye_common/armcpu.h"
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#include "core/arm/skyeye_common/armemu.h"
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#include "core/arm/skyeye_common/vfp/vfp.h"
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#include "core/arm/dyncom/arm_dyncom.h"
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#include "core/arm/dyncom/arm_dyncom_interpreter.h"
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const static cpu_config_t s_arm11_cpu_info = {
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"armv6", "arm11", 0x0007b000, 0x0007f000, NONCACHE
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};
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ARM_DynCom::ARM_DynCom() : ticks(0) {
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state = std::unique_ptr<ARMul_State>(new ARMul_State);
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ARMul_EmulateInit();
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memset(state.get(), 0, sizeof(ARMul_State));
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ARMul_NewState((ARMul_State*)state.get());
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state->abort_model = 0;
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state->cpu = (cpu_config_t*)&s_arm11_cpu_info;
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state->bigendSig = LOW;
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ARMul_SelectProcessor(state.get(), ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
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state->lateabtSig = LOW;
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mmu_init(state);
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// Reset the core to initial state
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ARMul_CoProInit(state.get());
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ARMul_Reset(state.get());
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state->NextInstr = RESUME; // NOTE: This will be overwritten by LoadContext
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state->Emulate = 3;
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state->pc = state->Reg[15] = 0x00000000;
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state->Reg[13] = 0x10000000; // Set stack pointer to the top of the stack
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state->servaddr = 0xFFFF0000;
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state->NirqSig = HIGH;
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VFPInit(state.get()); // Initialize the VFP
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ARMul_EmulateInit();
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}
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ARM_DynCom::~ARM_DynCom() {
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}
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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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void ARM_DynCom::SetPC(u32 pc) {
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state->pc = state->Reg[15] = pc;
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}
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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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u32 ARM_DynCom::GetPC() const {
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return state->pc;
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}
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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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u32 ARM_DynCom::GetReg(int index) const {
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return state->Reg[index];
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}
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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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void ARM_DynCom::SetReg(int index, u32 value) {
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state->Reg[index] = value;
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}
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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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u32 ARM_DynCom::GetCPSR() const {
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return state->Cpsr;
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}
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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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void ARM_DynCom::SetCPSR(u32 cpsr) {
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state->Cpsr = cpsr;
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}
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/**
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* Returns the number of clock ticks since the last reset
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* @return Returns number of clock ticks
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*/
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u64 ARM_DynCom::GetTicks() const {
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return ticks;
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}
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/**
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* Executes the given number of instructions
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* @param num_instructions Number of instructions to executes
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*/
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void ARM_DynCom::ExecuteInstructions(int num_instructions) {
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ticks += num_instructions;
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state->NumInstrsToExecute = num_instructions;
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InterpreterMainLoop(state.get());
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}
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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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* @todo Do we need to save Reg[15] and NextInstr?
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*/
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void ARM_DynCom::SaveContext(ThreadContext& ctx) {
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memcpy(ctx.cpu_registers, state->Reg, sizeof(ctx.cpu_registers));
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memcpy(ctx.fpu_registers, state->ExtReg, sizeof(ctx.fpu_registers));
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ctx.sp = state->Reg[13];
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ctx.lr = state->Reg[14];
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ctx.pc = state->pc;
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ctx.cpsr = state->Cpsr;
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ctx.fpscr = state->VFP[1];
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ctx.fpexc = state->VFP[2];
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ctx.reg_15 = state->Reg[15];
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ctx.mode = state->NextInstr;
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}
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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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* @param Do we need to load Reg[15] and NextInstr?
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*/
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void ARM_DynCom::LoadContext(const ThreadContext& ctx) {
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memcpy(state->Reg, ctx.cpu_registers, sizeof(ctx.cpu_registers));
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memcpy(state->ExtReg, ctx.fpu_registers, sizeof(ctx.fpu_registers));
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state->Reg[13] = ctx.sp;
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state->Reg[14] = ctx.lr;
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state->pc = ctx.pc;
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state->Cpsr = ctx.cpsr;
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state->VFP[1] = ctx.fpscr;
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state->VFP[2] = ctx.fpexc;
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state->Reg[15] = ctx.reg_15;
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state->NextInstr = ctx.mode;
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}
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/// Prepare core for thread reschedule (if needed to correctly handle state)
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void ARM_DynCom::PrepareReschedule() {
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state->NumInstrsToExecute = 0;
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}
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