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https://github.com/LadybirdBrowser/ladybird.git
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7eac9fe10e
We can now step into library code in the debugger. Since we now need the whole source code of our libraries (and not just the headers), we clone the whole serenity git repo into /usr/share/serenity.
110 lines
4.5 KiB
C++
110 lines
4.5 KiB
C++
/*
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* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "DebugInfoWidget.h"
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#include "BacktraceModel.h"
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#include "Debugger.h"
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#include "VariablesModel.h"
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#include <AK/StringBuilder.h>
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#include <LibGUI/Action.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/InputBox.h>
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#include <LibGUI/ListView.h>
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#include <LibGUI/Menu.h>
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#include <LibGUI/Model.h>
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#include <LibGUI/Splitter.h>
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#include <LibGUI/TreeView.h>
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DebugInfoWidget::DebugInfoWidget()
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{
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set_layout<GUI::HorizontalBoxLayout>();
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auto& splitter = add<GUI::HorizontalSplitter>();
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m_backtrace_view = splitter.add<GUI::ListView>();
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m_variables_view = splitter.add<GUI::TreeView>();
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m_backtrace_view->on_selection = [this](auto& index) {
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auto& model = static_cast<BacktraceModel&>(*m_backtrace_view->model());
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// Note: The reconstruction of the register set here is obviously incomplete.
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// We currently only reconstruct eip & ebp. Ideally would also reconstruct the other registers somehow.
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// (Other registers may be needed to get the values of variables who are not stored on the stack)
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PtraceRegisters frame_regs {};
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frame_regs.eip = model.frames()[index.row()].instruction_address;
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frame_regs.ebp = model.frames()[index.row()].frame_base;
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m_variables_view->set_model(VariablesModel::create(frame_regs));
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};
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auto edit_variable_action = GUI::Action::create("Change value", [&](auto&) {
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m_variables_view->on_activation(m_variables_view->selection().first());
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});
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m_variable_context_menu = GUI::Menu::construct();
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m_variable_context_menu->add_action(edit_variable_action);
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auto is_valid_index = [](auto& index) {
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if (!index.is_valid())
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return false;
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auto* variable = static_cast<const DebugInfo::VariableInfo*>(index.internal_data());
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if (variable->location_type != DebugInfo::VariableInfo::LocationType::Address)
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return false;
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return variable->is_enum_type() || variable->type_name.is_one_of("int", "bool");
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};
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m_variables_view->on_context_menu_request = [this, is_valid_index](auto& index, auto& event) {
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if (!is_valid_index(index))
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return;
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m_variable_context_menu->popup(event.screen_position());
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};
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m_variables_view->on_activation = [this, is_valid_index](auto& index) {
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if (!is_valid_index(index))
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return;
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String value;
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if (GUI::InputBox::show(value, window(), "Enter new value:", "Set variable value") == GUI::InputBox::ExecOK) {
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auto& model = static_cast<VariablesModel&>(*m_variables_view->model());
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model.set_variable_value(index, value, window());
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}
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};
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}
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void DebugInfoWidget::update_state(const DebugSession& debug_session, const PtraceRegisters& regs)
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{
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m_variables_view->set_model(VariablesModel::create(regs));
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m_backtrace_view->set_model(BacktraceModel::create(debug_session, regs));
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auto selected_index = m_backtrace_view->model()->index(0);
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if (!selected_index.is_valid()) {
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dbg() << "Warning: DebugInfoWidget: backtrace selected index is invalid";
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return;
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}
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m_backtrace_view->selection().set(selected_index);
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}
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void DebugInfoWidget::program_stopped()
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{
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m_variables_view->set_model({});
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}
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