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/*
* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "DebugInfoWidget.h"
#include "BacktraceModel.h"
#include "Debugger.h"
#include "RegistersModel.h"
#include "VariablesModel.h"
#include <AK/StringBuilder.h>
#include <LibGUI/Action.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/InputBox.h>
#include <LibGUI/ListView.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Model.h>
#include <LibGUI/Splitter.h>
#include <LibGUI/TabWidget.h>
#include <LibGUI/TreeView.h>
namespace HackStudio {
void DebugInfoWidget::init_toolbar()
{
m_continue_action = GUI::Action::create("Continue", Gfx::Bitmap::try_load_from_file("/res/icons/16x16/debug-continue.png").release_value_but_fixme_should_propagate_errors(), [](auto&) {
Debugger::the().set_requested_debugger_action(Debugger::DebuggerAction::Continue);
});
m_singlestep_action = GUI::Action::create("Step Over", { Mod_None, Key_F10 }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/debug-step-over.png").release_value_but_fixme_should_propagate_errors(), [](auto&) {
Debugger::the().set_requested_debugger_action(Debugger::DebuggerAction::SourceStepOver);
});
m_step_in_action = GUI::Action::create("Step In", { Mod_None, Key_F11 }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/debug-step-in.png").release_value_but_fixme_should_propagate_errors(), [](auto&) {
Debugger::the().set_requested_debugger_action(Debugger::DebuggerAction::SourceSingleStep);
});
m_step_out_action = GUI::Action::create("Step Out", { Mod_Shift, Key_F11 }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/debug-step-out.png").release_value_but_fixme_should_propagate_errors(), [](auto&) {
Debugger::the().set_requested_debugger_action(Debugger::DebuggerAction::SourceStepOut);
});
m_toolbar->add_action(*m_continue_action);
m_toolbar->add_action(*m_singlestep_action);
m_toolbar->add_action(*m_step_in_action);
m_toolbar->add_action(*m_step_out_action);
set_debug_actions_enabled(false);
}
DebugInfoWidget::DebugInfoWidget()
{
set_layout<GUI::VerticalBoxLayout>();
auto& toolbar_container = add<GUI::ToolbarContainer>();
m_toolbar = toolbar_container.add<GUI::Toolbar>();
init_toolbar();
auto& bottom_box = add<GUI::Widget>();
bottom_box.set_layout<GUI::HorizontalBoxLayout>();
auto& splitter = bottom_box.add<GUI::HorizontalSplitter>();
m_backtrace_view = splitter.add<GUI::ListView>();
auto& variables_tab_widget = splitter.add<GUI::TabWidget>();
variables_tab_widget.set_tab_position(GUI::TabWidget::TabPosition::Bottom);
variables_tab_widget.add_widget("Variables", build_variables_tab());
variables_tab_widget.add_widget("Registers", build_registers_tab());
m_backtrace_view->on_selection_change = [this] {
const auto& index = m_backtrace_view->selection().first();
if (!index.is_valid()) {
return;
}
auto& model = static_cast<BacktraceModel&>(*m_backtrace_view->model());
// Note: The reconstruction of the register set here is obviously incomplete.
// We currently only reconstruct eip & ebp. Ideally would also reconstruct the other registers somehow.
// (Other registers may be needed to get the values of variables who are not stored on the stack)
PtraceRegisters frame_regs {};
frame_regs.set_ip(model.frames()[index.row()].instruction_address);
frame_regs.set_bp(model.frames()[index.row()].frame_base);
m_variables_view->set_model(VariablesModel::create(frame_regs));
};
}
bool DebugInfoWidget::does_variable_support_writing(const Debug::DebugInfo::VariableInfo* variable)
{
if (variable->location_type != Debug::DebugInfo::VariableInfo::LocationType::Address)
return false;
return variable->is_enum_type() || variable->type_name.is_one_of("int", "bool");
}
RefPtr<GUI::Menu> DebugInfoWidget::get_context_menu_for_variable(const GUI::ModelIndex& index)
{
if (!index.is_valid())
return nullptr;
auto context_menu = GUI::Menu::construct();
auto* variable = static_cast<const Debug::DebugInfo::VariableInfo*>(index.internal_data());
if (does_variable_support_writing(variable)) {
context_menu->add_action(GUI::Action::create("Change value", [&](auto&) {
String value;
if (GUI::InputBox::show(window(), value, "Enter new value:", "Set variable value") == GUI::InputBox::ExecOK) {
auto& model = static_cast<VariablesModel&>(*m_variables_view->model());
model.set_variable_value(index, value, window());
}
}));
}
auto variable_address = (FlatPtr*)variable->location_data.address;
if (Debugger::the().session()->watchpoint_exists(variable_address)) {
context_menu->add_action(GUI::Action::create("Remove watchpoint", [variable_address](auto&) {
Debugger::the().session()->remove_watchpoint(variable_address);
}));
} else {
auto& backtrace_model = static_cast<BacktraceModel&>(*m_backtrace_view->model());
auto current_frame = m_backtrace_view->selection().first().row();
auto ebp = backtrace_model.frames()[current_frame].frame_base;
context_menu->add_action(GUI::Action::create("Add watchpoint", [variable_address, ebp](auto&) {
Debugger::the().session()->insert_watchpoint(variable_address, ebp);
}));
}
return context_menu;
}
NonnullRefPtr<GUI::Widget> DebugInfoWidget::build_variables_tab()
{
auto variables_widget = GUI::Widget::construct();
variables_widget->set_layout<GUI::HorizontalBoxLayout>();
m_variables_view = variables_widget->add<GUI::TreeView>();
m_variables_view->on_context_menu_request = [this](auto& index, auto& event) {
m_variable_context_menu = get_context_menu_for_variable(index);
if (m_variable_context_menu)
m_variable_context_menu->popup(event.screen_position());
};
return variables_widget;
}
NonnullRefPtr<GUI::Widget> DebugInfoWidget::build_registers_tab()
{
auto registers_widget = GUI::Widget::construct();
registers_widget->set_layout<GUI::HorizontalBoxLayout>();
m_registers_view = registers_widget->add<GUI::TableView>();
return registers_widget;
}
void DebugInfoWidget::update_state(const Debug::ProcessInspector& inspector, const PtraceRegisters& regs)
{
m_variables_view->set_model(VariablesModel::create(regs));
m_backtrace_view->set_model(BacktraceModel::create(inspector, regs));
if (m_registers_view->model()) {
auto& previous_registers = static_cast<RegistersModel*>(m_registers_view->model())->raw_registers();
m_registers_view->set_model(RegistersModel::create(regs, previous_registers));
} else {
m_registers_view->set_model(RegistersModel::create(regs));
}
auto selected_index = m_backtrace_view->model()->index(0);
if (!selected_index.is_valid()) {
dbgln("Warning: DebugInfoWidget: backtrace selected index is invalid");
return;
}
m_backtrace_view->selection().set(selected_index);
}
void DebugInfoWidget::program_stopped()
{
m_variables_view->set_model({});
m_backtrace_view->set_model({});
m_registers_view->set_model({});
}
void DebugInfoWidget::set_debug_actions_enabled(bool enabled)
{
m_continue_action->set_enabled(enabled);
m_singlestep_action->set_enabled(enabled);
m_step_in_action->set_enabled(enabled);
m_step_out_action->set_enabled(enabled);
}
}
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