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emuthread.cpp
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emuthread.cpp
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/* Copyright (C) 2015 Fabian Vogt
* Modified for the CE calculator by CEmu developers
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "emuthread.h"
#include <cassert>
#include <iostream>
#include <cstdarg>
#include <chrono>
#include <QtCore/QEventLoop>
#include <QtCore/QTimer>
#include "mainwindow.h"
#include "core/emu.h"
#include "core/link.h"
#include "core/debug/debug.h"
EmuThread *emu_thread = nullptr;
void gui_do_stuff(bool wait) {
emu_thread->doStuff(wait);
}
void gui_console_printf(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
gui_console_vprintf(fmt, ap);
va_end(ap);
}
void gui_console_vprintf(const char *fmt, va_list ap) {
QString str;
str.vsprintf(fmt, ap);
emu_thread->consoleStr(str);
}
void gui_perror(const char *msg) {
gui_console_printf("%s: %s\n", msg, strerror(errno));
}
void gui_debugger_send_command(int reason, uint32_t addr) {
emu_thread->sendDebugCommand(reason, addr);
}
void throttle_timer_wait() {
emu_thread->throttleTimerWait();
}
void gui_debugger_entered_or_left(bool entered) {
if (entered == true) {
emu_thread->debuggerEntered();
}
}
EmuThread::EmuThread(QObject *p) : QThread(p) {
assert(emu_thread == nullptr);
emu_thread = this;
}
void EmuThread::setDebugMode(bool state) {
enter_debugger = state;
if(in_debugger && !state) {
in_debugger = false;
}
}
void EmuThread::setSendState(bool state) {
enter_send_state = state;
emu_is_sending = state;
}
void EmuThread::setReceiveState(bool state) {
enter_receive_state = state;
emu_is_recieving = state;
}
void EmuThread::setDebugStepMode() {
enter_debugger = false;
in_debugger = false;
cpu_events |= EVENT_DEBUG_STEP;
}
void EmuThread::setDebugStepOverMode() {
enter_debugger = false;
in_debugger = false;
cpu_events |= EVENT_DEBUG_STEP_OVER;
}
//Called occasionally, only way to do something in the same thread the emulator runs in.
void EmuThread::doStuff(bool wait_for) {
(void)wait_for;
if (enter_send_state) {
enter_send_state = false;
enterVariableLink();
}
if (enter_receive_state) {
enter_receive_state = false;
enterVariableLink();
}
if (enter_debugger) {
enter_debugger = false;
debugger(DBG_USER, 0);
}
}
void EmuThread::throttleTimerWait() {
unsigned int now = std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
unsigned int throttle = throttle_delay * 1000;
unsigned int left = throttle - (now % throttle);
if (left > 0)
QThread::usleep(left);
}
void EmuThread::run() {
rom_image = rom.c_str();
bool reset_true = true;
bool success = emu_start();
if(success) { emu_loop(reset_true); }
emit exited(0);
}
bool EmuThread::stop() {
if(!isRunning())
return true;
exiting = true;
in_debugger = false;
emu_is_sending = false;
/* Cause the CPU core to leave the loop and check for events */
cycle_count_delta = 0;
if(!this->wait(200))
{
terminate();
if(!this->wait(200))
{
return false;
}
}
return true;
}