mirror of
https://github.com/RGBCube/serenity
synced 2025-05-14 10:44:58 +00:00
b81926d933
This implements bits and pieces to get the debugging functionality to build. No testing has been done to check whether it actually works because GCC doesn't currently work.
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*
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* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "BacktraceModel.h"
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#include "Debugger.h"
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#include <LibDebug/StackFrameUtils.h>
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namespace HackStudio {
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NonnullRefPtr<BacktraceModel> BacktraceModel::create(const Debug::DebugSession& debug_session, const PtraceRegisters& regs)
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{
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return adopt_ref(*new BacktraceModel(create_backtrace(debug_session, regs)));
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}
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GUI::Variant BacktraceModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
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{
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if (role == GUI::ModelRole::Display) {
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auto& frame = m_frames.at(index.row());
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return frame.function_name;
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}
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return {};
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}
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GUI::ModelIndex BacktraceModel::index(int row, int column, const GUI::ModelIndex&) const
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{
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if (row < 0 || row >= static_cast<int>(m_frames.size()))
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return {};
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return create_index(row, column, &m_frames.at(row));
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}
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Vector<BacktraceModel::FrameInfo> BacktraceModel::create_backtrace(const Debug::DebugSession& debug_session, const PtraceRegisters& regs)
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{
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FlatPtr current_ebp = regs.bp();
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FlatPtr current_instruction = regs.ip();
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Vector<BacktraceModel::FrameInfo> frames;
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do {
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auto lib = debug_session.library_at(regs.ip());
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if (!lib)
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continue;
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String name = lib->debug_info->name_of_containing_function(current_instruction - lib->base_address);
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if (name.is_null()) {
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dbgln("BacktraceModel: couldn't find containing function for address: {:p}", current_instruction);
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name = "<missing>";
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}
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frames.append({ name, current_instruction, current_ebp });
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auto frame_info = Debug::StackFrameUtils::get_info(*Debugger::the().session(), current_ebp);
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VERIFY(frame_info.has_value());
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current_instruction = frame_info.value().return_address;
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current_ebp = frame_info.value().next_ebp;
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} while (current_ebp && current_instruction);
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return frames;
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}
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}
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