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HackStudio: Show a backtrace in the debug information tab

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Itamar 2020-05-08 14:20:06 +03:00 • committed by Andreas Kling
parent b9f0f402f4
commit 1fb62df02a
7 changed files with 152 additions and 9 deletions
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62
DevTools/HackStudio/Debugger/BacktraceModel.cpp Normal file
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/*
* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "BacktraceModel.h"
#include "Debugger.h"
RefPtr<BacktraceModel> BacktraceModel::create(const PtraceRegisters& regs)
{
return adopt(*new BacktraceModel(create_backtrace(regs)));
}
GUI::Variant BacktraceModel::data(const GUI::ModelIndex& index, Role role) const
{
if (role == Role::Display) {
auto& frame = m_frames.at(index.row());
return frame.function_name;
}
return {};
}
Vector<BacktraceModel::FrameInfo> BacktraceModel::create_backtrace(const PtraceRegisters& regs)
{
u32 current_ebp = regs.ebp;
u32 current_instruction = regs.eip;
Vector<BacktraceModel::FrameInfo> frames;
do {
const auto& debug_info = Debugger::the().session()->debug_info();
String name = debug_info.name_of_containing_function(current_instruction);
if (name.is_null()) {
dbg() << "BacktraceModel: couldn't find containing function for address: " << (void*)current_instruction;
break;
}
frames.append({ name, current_instruction });
current_instruction = Debugger::the().session()->peek(reinterpret_cast<u32*>(current_ebp + 4)).value();
current_ebp = Debugger::the().session()->peek(reinterpret_cast<u32*>(current_ebp)).value();
} while (current_ebp);
return frames;
}