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/*
Copyright (C) 2006 - 2015 Evan Teran
evan.teran@gmail.com
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, see <http://www.gnu.org/licenses/>.
*/
#include "DialogReferences.h"
#include "IDebugger.h"
#include "MemoryRegions.h"
#include "edb.h"
#include "util/Math.h"
#include <QMessageBox>
#include <QPushButton>
#include <QVector>
namespace ReferencesPlugin {
enum Role {
TypeRole = Qt::UserRole + 0,
AddressRole = Qt::UserRole + 1
};
/**
* @brief DialogReferences::DialogReferences
* @param parent
* @param f
*/
DialogReferences::DialogReferences(QWidget *parent, Qt::WindowFlags f)
: QDialog(parent, f) {
ui.setupUi(this);
connect(this, &DialogReferences::updateProgress, ui.progressBar, &QProgressBar::setValue);
buttonFind_ = new QPushButton(QIcon::fromTheme("edit-find"), tr("Find"));
connect(buttonFind_, &QPushButton::clicked, this, [this]() {
buttonFind_->setEnabled(false);
ui.progressBar->setValue(0);
ui.listWidget->clear();
doFind();
ui.progressBar->setValue(100);
buttonFind_->setEnabled(true);
});
ui.buttonBox->addButton(buttonFind_, QDialogButtonBox::ActionRole);
}
/**
* @brief DialogReferences::showEvent
*/
void DialogReferences::showEvent(QShowEvent *) {
ui.listWidget->clear();
ui.progressBar->setValue(0);
}
/**
* @brief DialogReferences::doFind
*/
void DialogReferences::doFind() {
bool ok = false;
edb::address_t address;
const size_t page_size = edb::v1::debugger_core->pageSize();
const QString text = ui.txtAddress->text();
if (!text.isEmpty()) {
ok = edb::v1::eval_expression(text, &address);
}
if (ok) {
edb::v1::memory_regions().sync();
const QList<std::shared_ptr<IRegion>> regions = edb::v1::memory_regions().regions();
int i = 0;
for (const std::shared_ptr<IRegion> ®ion : regions) {
// a short circut for speading things up
if (region->accessible() || !ui.chkSkipNoAccess->isChecked()) {
const size_t page_count = region->size() / page_size;
const QVector<uint8_t> pages = edb::v1::read_pages(region->start(), page_count);
if (!pages.isEmpty()) {
const uint8_t *p = &pages[0];
const uint8_t *const pages_end = &pages[0] + region->size();
while (p != pages_end) {
if (pages_end - p < static_cast<int>(edb::v1::pointer_size())) {
break;
}
const edb::address_t addr = p - &pages[0] + region->start();
edb::address_t test_address(0);
memcpy(&test_address, p, edb::v1::pointer_size());
if (test_address == address) {
auto item = new QListWidgetItem(edb::v1::format_pointer(addr));
item->setData(TypeRole, 'D');
item->setData(AddressRole, addr.toQVariant());
ui.listWidget->addItem(item);
}
edb::Instruction inst(p, pages_end, addr);
if (inst) {
switch (inst.operation()) {
case X86_INS_MOV:
// instructions of the form: mov [ADDR], 0xNNNNNNNN
Q_ASSERT(inst.operandCount() == 2);
if (is_expression(inst[0])) {
if (is_immediate(inst[1]) && static_cast<edb::address_t>(inst[1]->imm) == address) {
auto item = new QListWidgetItem(edb::v1::format_pointer(addr));
item->setData(TypeRole, 'C');
item->setData(AddressRole, addr.toQVariant());
ui.listWidget->addItem(item);
}
}
break;
case X86_INS_PUSH:
// instructions of the form: push 0xNNNNNNNN
Q_ASSERT(inst.operandCount() == 1);
if (is_immediate(inst[0]) && static_cast<edb::address_t>(inst[0]->imm) == address) {
auto item = new QListWidgetItem(edb::v1::format_pointer(addr));
item->setData(TypeRole, 'C');
item->setData(AddressRole, addr.toQVariant());
ui.listWidget->addItem(item);
}
break;
default:
if (is_jump(inst) || is_call(inst)) {
if (is_immediate(inst[0])) {
if (static_cast<edb::address_t>(inst[0]->imm) == address) {
auto item = new QListWidgetItem(edb::v1::format_pointer(addr));
item->setData(TypeRole, 'C');
item->setData(AddressRole, addr.toQVariant());
ui.listWidget->addItem(item);
}
}
}
break;
}
}
Q_EMIT updateProgress(util::percentage(i, regions.size(), p - &pages[0], region->size()));
++p;
}
}
} else {
Q_EMIT updateProgress(util::percentage(i, regions.size()));
}
++i;
}
}
}
/**
* @brief DialogReferences::on_listWidget_itemDoubleClicked
*
* follows the found item in the data view
*
* @param item
*/
void DialogReferences::on_listWidget_itemDoubleClicked(QListWidgetItem *item) {
const edb::address_t addr = item->data(AddressRole).toULongLong();
if (item->data(TypeRole).toChar() == 'D') {
edb::v1::dump_data(addr, false);
} else {
edb::v1::jump_to_address(addr);
}
}
}
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