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// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
* QtMips - MIPS 32-bit Architecture Subset Simulator
*
* Implemented to support following courses:
*
* B35APO - Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b35apo
*
* B4M35PAP - Advanced Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
*
* Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
* Copyright (c) 2019 Pavel Pisa <pisa@cmp.felk.cvut.cz>
*
* Faculty of Electrical Engineering (http://www.fel.cvut.cz)
* Czech Technical University (http://www.cvut.cz/)
*
* 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 2
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
******************************************************************************/
#include "reporter.h"
#include <iostream>
#include <fstream>
#include <iomanip>
#include <typeinfo>
#include <qtmipsexception.h>
using namespace machine;
using namespace std;
Reporter::Reporter(QCoreApplication *app, QtMipsMachine *machine) : QObject() {
this->app = app;
this->machine = machine;
connect(machine, SIGNAL(program_exit()), this, SLOT(machine_exit()));
connect(machine, SIGNAL(program_trap(machine::QtMipsException&)), this, SLOT(machine_trap(machine::QtMipsException&)));
connect(machine->core(), SIGNAL(stop_on_exception_reached()), this, SLOT(machine_exception_reached()));
e_regs = false;
e_cache_stats = false;
e_cycles = false;
e_fail = (enum FailReason)0;
}
void Reporter::regs() {
e_regs = true;
}
void Reporter::cache_stats() {
e_cache_stats = true;
}
void Reporter::cycles() {
e_cycles = true;
}
void Reporter::expect_fail(enum FailReason reason) {
e_fail = (enum FailReason)(e_fail | reason);
}
void Reporter::add_dump_range(std::uint32_t start, std::uint32_t len, QString fname) {
dump_ranges.append({start, len, fname});
}
void Reporter::machine_exit() {
report();
if (e_fail != 0) {
cout << "Machine was expected to fail but it didn't." << endl;
app->exit(1);
} else
app->exit();
}
void Reporter::machine_exception_reached() {
ExceptionCause excause;
excause = machine->get_exception_cause();
switch (excause) {
case EXCAUSE_NONE:
cout << "Machine stopped on NONE exception." << endl;
break;
case EXCAUSE_INT:
cout << "Machine stopped on INT exception." << endl;
break;
case EXCAUSE_ADDRL:
cout << "Machine stopped on ADDRL exception." << endl;
break;
case EXCAUSE_ADDRS:
cout << "Machine stopped on ADDRS exception." << endl;
break;
case EXCAUSE_IBUS:
cout << "Machine stopped on IBUS exception." << endl;
break;
case EXCAUSE_DBUS:
cout << "Machine stopped on DBUS exception." << endl;
break;
case EXCAUSE_SYSCALL:
cout << "Machine stopped on SYSCALL exception." << endl;
break;
case EXCAUSE_OVERFLOW:
cout << "Machine stopped on OVERFLOW exception." << endl;
break;
case EXCAUSE_TRAP:
cout << "Machine stopped on TRAP exception." << endl;
break;
case EXCAUSE_HWBREAK:
cout << "Machine stopped on HWBREAK exception." << endl;
break;
default:
break;
}
report();
app->exit();
}
void Reporter::machine_trap(QtMipsException &e) {
report();
bool expected = false;
auto& etype = typeid(e);
if (etype == typeid(QtMipsExceptionUnsupportedInstruction))
expected = e_fail & FR_I;
else if (etype == typeid(QtMipsExceptionUnsupportedAluOperation))
expected = e_fail & FR_A;
else if (etype == typeid(QtMipsExceptionOverflow))
expected = e_fail & FR_O;
else if (etype == typeid(QtMipsExceptionUnalignedJump))
expected = e_fail & FR_J;
cout << "Machine trapped: " << e.msg(false).toStdString() << endl;
app->exit(expected ? 0 : 1);
}
static void out_hex(ostream &out, std::uint64_t val, int digits) {
std::ios_base::fmtflags saveflg(out.flags());
char prevfill = out.fill('0');
out.setf(ios::hex, ios::basefield);
out << setfill('0') << setw(digits) << val;
out.fill(prevfill);
out.flags(saveflg);
}
void Reporter::report() {
cout << dec;
if (e_regs) {
cout << "Machine state report:" << endl;
cout << "PC:0x";
out_hex(cout, machine->registers()->read_pc(), 8);
cout << endl;
for (int i = 0; i < 32; i++) {
cout << "R" << i << ":0x";
out_hex(cout, machine->registers()->read_gp(i), 8);
if (i != 31)
cout << " ";
else
cout << endl;
}
cout << "HI:0x";
out_hex(cout, machine->registers()->read_hi_lo(true), 8);
cout << " LO:0x";
out_hex(cout, machine->registers()->read_hi_lo(false), 8);
cout << endl;
for (int i = 1; i < Cop0State::COP0REGS_CNT; i++) {
cout << Cop0State::cop0reg_name((Cop0State::Cop0Registers)i).toLocal8Bit().data() << ":0x";
out_hex(cout, machine->cop0state()->read_cop0reg((Cop0State::Cop0Registers)i), 8);
if (i != Cop0State::COP0REGS_CNT - 1)
cout << " ";
else
cout << endl;
}
}
if (e_cache_stats) {
cout << "Cache statistics report:" << endl;
cout << "i-cache:reads:" << machine->cache_program()->memory_reads() << endl;
cout << "i-cache:hit:" << machine->cache_program()->hit() << endl;
cout << "i-cache:miss:" << machine->cache_program()->miss() << endl;
cout << "i-cache:hit-rate:" << machine->cache_program()->hit_rate() << endl;
cout << "i-cache:stalled-cycles:" << machine->cache_program()->stalled_cycles() << endl;
cout << "i-cache:improved-speed:" << machine->cache_program()->speed_improvement() << endl;
cout << "d-cache:reads:" << machine->cache_data()->memory_reads() << endl;
cout << "d-cache:writes:" << machine->cache_data()->memory_writes() << endl;
cout << "d-cache:hit:" << machine->cache_data()->hit() << endl;
cout << "d-cache:miss:" << machine->cache_data()->miss() << endl;
cout << "d-cache:hit-rate:" << machine->cache_data()->hit_rate() << endl;
cout << "d-cache:stalled-cycles:" << machine->cache_data()->stalled_cycles() << endl;
cout << "d-cache:improved-speed:" << machine->cache_data()->speed_improvement() << endl;
}
if (e_cycles) {
cout << "cycles:" << machine->core()->cycles() << endl;
cout << "stalls:" << machine->core()->stalls() << endl;
}
foreach (DumpRange range, dump_ranges) {
ofstream out;
out.open(range.fname.toLocal8Bit().data(), ios::out | ios::trunc);
std::int32_t start = range.start & ~3;
std::int32_t end = range.start + range.len;
if (end < start)
end = 0xffffffff;
for (std::int32_t addr = start; addr < end; addr += 4) {
out << "0x";
out_hex(out, machine->memory()->read_word(addr), 8);
out << endl;
}
out.close();
}
}
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