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#include "Userspace.h"
#include "Bus.h"
#include "RAM.h"
#include <thread>
Userspace::Userspace() : m_RAM(std::make_shared<RAM>()), m_ProgramMemory(std::make_shared<RAM>()), m_Bus(std::make_shared<Bus>(m_RAM)), m_CPU(m_Bus) {
std::cout << "[Userspace] Emulation started." << std::endl;
m_ApplicationRunning = true;
m_Status = SystemStatus::STOPPED;
}
void Userspace::Upload2Memory(uint8_t bytes[], size_t len) {
m_ProgramMemoryLen = len;
std::memcpy(m_RAM->Data(), bytes, len);
std::memcpy(m_ProgramMemory->Data(), bytes, len);
}
uint8_t* Userspace::RetrieveMemory() {
return m_RAM->Data();
}
void Userspace::Run() {
while(m_ApplicationRunning) {
EmulatorLoop();
}
}
void Userspace::StepCPU() {
try {
m_CPU.Step();
} catch (CPUException& c) {
m_Status = SystemStatus::EXCEPTION;
m_ExceptionMessages.push_back(c.GetMessage());
}
}
void Userspace::EmulatorLoop() {
while(m_Status == SystemStatus::RUNNING) {
if(!m_CPU.IsHalted()) {
StepCPU();
}
if (m_CPU.IsHalted()) {
if(m_Status == SystemStatus::RUNNING)
m_Status = SystemStatus::STOPPED;
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
}
if(m_Status == SystemStatus::STOPPED)
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
void Userspace::Reset() {
if(m_CPU.IsHalted()) m_Status = SystemStatus::STOPPED;
m_CPU.Reset();
std::memcpy(m_RAM->Data(), m_ProgramMemory->Data(), m_ProgramMemoryLen);
m_ExceptionMessages.clear();
}
void Userspace::Start() {
m_Status = SystemStatus::RUNNING;
}
void Userspace::Step() {
if(!m_CPU.IsHalted())
{
StepCPU();
std::cout << "[Userspace] CPU stepped!" << std::endl;
}
else
{
std::cout << "[Userspace] CPU is halted! Cannot step." << std::endl;
}
}
void Userspace::Stop() {
m_Status = SystemStatus::STOPPED;
std::cout << "[Userspace] Emulation stopped." << std::endl;
}
void Userspace::Exit() {
m_Status = SystemStatus::STOPPED;
m_ApplicationRunning = false;
std::cout << "[Userspace] Emulation exited." << std::endl;
}
SystemStatus Userspace::GetSystemStatus() {
return m_Status;
}
CPUStatus Userspace::GetCPUStatus() {
return m_CPU.GetStatus();
}
std::vector<std::string>& Userspace::GetException() {
return m_ExceptionMessages;
}
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