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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include <memory>
#include "core/arm/skyeye_common/armstate.h"
#include "core/arm/skyeye_common/armsupp.h"
#include "core/arm/skyeye_common/vfp/vfp.h"
#include "core/arm/dyncom/arm_dyncom.h"
#include "core/arm/dyncom/arm_dyncom_interpreter.h"
#include "core/arm/dyncom/arm_dyncom_run.h"
#include "core/core.h"
#include "core/core_timing.h"
ARM_DynCom::ARM_DynCom(PrivilegeMode initial_mode) {
state = std::make_unique<ARMul_State>(initial_mode);
}
ARM_DynCom::~ARM_DynCom() {
}
void ARM_DynCom::SetPC(u32 pc) {
state->Reg[15] = pc;
}
u32 ARM_DynCom::GetPC() const {
return state->Reg[15];
}
u32 ARM_DynCom::GetReg(int index) const {
return state->Reg[index];
}
void ARM_DynCom::SetReg(int index, u32 value) {
state->Reg[index] = value;
}
u32 ARM_DynCom::GetVFPReg(int index) const {
return state->ExtReg[index];
}
void ARM_DynCom::SetVFPReg(int index, u32 value) {
state->ExtReg[index] = value;
}
u32 ARM_DynCom::GetVFPSystemReg(VFPSystemRegister reg) const {
return state->VFP[reg];
}
void ARM_DynCom::SetVFPSystemReg(VFPSystemRegister reg, u32 value) {
state->VFP[reg] = value;
}
u32 ARM_DynCom::GetCPSR() const {
return state->Cpsr;
}
void ARM_DynCom::SetCPSR(u32 cpsr) {
state->Cpsr = cpsr;
}
u32 ARM_DynCom::GetCP15Register(CP15Register reg) {
return state->CP15[reg];
}
void ARM_DynCom::SetCP15Register(CP15Register reg, u32 value) {
state->CP15[reg] = value;
}
void ARM_DynCom::AddTicks(u64 ticks) {
down_count -= ticks;
if (down_count < 0)
CoreTiming::Advance();
}
void ARM_DynCom::ExecuteInstructions(int num_instructions) {
state->NumInstrsToExecute = num_instructions;
// Dyncom only breaks on instruction dispatch. This only happens on every instruction when
// executing one instruction at a time. Otherwise, if a block is being executed, more
// instructions may actually be executed than specified.
unsigned ticks_executed = InterpreterMainLoop(state.get());
AddTicks(ticks_executed);
}
void ARM_DynCom::ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg) {
memset(&context, 0, sizeof(Core::ThreadContext));
context.cpu_registers[0] = arg;
context.pc = entry_point;
context.sp = stack_top;
context.cpsr = 0x1F | ((entry_point & 1) << 5); // Usermode and THUMB mode
}
void ARM_DynCom::SaveContext(Core::ThreadContext& ctx) {
memcpy(ctx.cpu_registers, state->Reg.data(), sizeof(ctx.cpu_registers));
memcpy(ctx.fpu_registers, state->ExtReg.data(), sizeof(ctx.fpu_registers));
ctx.sp = state->Reg[13];
ctx.lr = state->Reg[14];
ctx.pc = state->Reg[15];
ctx.cpsr = state->Cpsr;
ctx.fpscr = state->VFP[1];
ctx.fpexc = state->VFP[2];
}
void ARM_DynCom::LoadContext(const Core::ThreadContext& ctx) {
memcpy(state->Reg.data(), ctx.cpu_registers, sizeof(ctx.cpu_registers));
memcpy(state->ExtReg.data(), ctx.fpu_registers, sizeof(ctx.fpu_registers));
state->Reg[13] = ctx.sp;
state->Reg[14] = ctx.lr;
state->Reg[15] = ctx.pc;
state->Cpsr = ctx.cpsr;
state->VFP[1] = ctx.fpscr;
state->VFP[2] = ctx.fpexc;
}
void ARM_DynCom::PrepareReschedule() {
state->NumInstrsToExecute = 0;
}
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