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Diffstat (limited to 'qtmips_gui/programmodel.cpp')
| -rw-r--r-- | qtmips_gui/programmodel.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/qtmips_gui/programmodel.cpp b/qtmips_gui/programmodel.cpp new file mode 100644 index 0000000..5387058 --- /dev/null +++ b/qtmips_gui/programmodel.cpp @@ -0,0 +1,185 @@ +// 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 <QBrush> + +#include "programmodel.h" + +ProgramModel::ProgramModel(QObject *parent) + : Super(parent), data_font("Monospace") { + index0_offset = 0; + data_font.setStyleHint(QFont::TypeWriter); + machine = nullptr; + memory_change_counter = 0; + cache_program_change_counter = 0; +} + +int ProgramModel::rowCount(const QModelIndex & /*parent*/) const { + return 750; +} + +int ProgramModel::columnCount(const QModelIndex & /*parent*/) const { + return 4; +} + +QVariant ProgramModel::headerData(int section, Qt::Orientation orientation, int role) const +{ + if(orientation == Qt::Horizontal) { + if(role == Qt::DisplayRole) { + switch (section) { + case 0: + return tr("Bp"); + case 1: + return tr("Address"); + case 2: + return tr("Code"); + case 3: + return tr("Instruction"); + default: + return tr(""); + } + } + } + return Super::headerData(section, orientation, role); +} + +QVariant ProgramModel::data(const QModelIndex &index, int role) const { + if (role == Qt::DisplayRole) + { + QString s, t; + std::uint32_t address; + std::uint32_t data; + if (!get_row_address(address, index.row())) + return QString(""); + + if (index.column() == 1) { + t = QString::number(address, 16); + s.fill('0', 8 - t.count()); + return "0x" + s + t.toUpper(); + } + + if (machine == nullptr) + return QString(" "); + if (machine->memory() == nullptr) + return QString(" "); + + machine::Instruction inst(machine->memory()->read_word(address)); + + switch (index.column()) { + case 0: + return QString(" "); + case 2: + t = QString::number(inst.data(), 16); + s.fill('0', 8 - t.count()); + return s + t.toUpper(); + case 3: return inst.to_str(address); + default: return tr(""); + } + } + if (role == Qt::BackgroundRole) { + std::uint32_t address; + if (!get_row_address(address, index.row()) || + machine == nullptr || index.column() != 2) + return QVariant(); + if (machine->cache_program() != nullptr) { + machine::LocationStatus loc_stat; + loc_stat = machine->cache_program()->location_status(address); + if (loc_stat & machine::LOCSTAT_CACHED) { + QBrush bgd(Qt::lightGray); + return bgd; + } + } + return QVariant(); + } + if (role==Qt::FontRole) + return data_font; + return QVariant(); +} + +void ProgramModel::setup(machine::QtMipsMachine *machine) { + this->machine = machine; + if (machine != nullptr) + connect(machine, SIGNAL(post_tick()), this, SLOT(check_for_updates())); + emit update_all(); +} + +void ProgramModel::update_all() { + if (machine != nullptr && machine->memory() != nullptr) { + memory_change_counter = machine->memory()->get_change_counter(); + if (machine->cache_program() != nullptr) + cache_program_change_counter = machine->cache_program()->get_change_counter(); + } + emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() - 1)); +} + +void ProgramModel::check_for_updates() { + bool need_update = false; + if (machine == nullptr) + return; + if (machine->memory() == nullptr) + return; + + if (memory_change_counter != machine->memory()->get_change_counter()) + need_update = true; + if (machine->cache_data() != nullptr) { + if (cache_program_change_counter != machine->cache_program()->get_change_counter()) + need_update = true; + } + if (!need_update) + return; + update_all(); +} + +bool ProgramModel::adjustRowAndOffset(int &row, int optimal_row, std::uint32_t address) { + if (optimal_row < rowCount() / 8) + optimal_row = rowCount() / 8; + if (optimal_row >= rowCount() - rowCount() / 8) + optimal_row = rowCount() - rowCount() / 8; + row = rowCount() / 2; + address -= address % cellSizeBytes(); + std::uint32_t row_bytes = cellSizeBytes(); + std::uint32_t diff = row * row_bytes; + if (diff > address) { + row = address / row_bytes; + if (row == 0) { + index0_offset = 0; + } else { + index0_offset = address - row * row_bytes; + } + } else { + index0_offset = address - diff; + } + return get_row_for_address(row, address); +} |