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LibDebug: Parse DWARF information entries

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We can now iterate the tree structure of the DIEs, access attribute
values and parse some very basic DWARF expressions.
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Itamar 2020-05-04 12:14:39 +03:00 • committed by Andreas Kling
parent 2cafc36d9c
commit c5eb20d0cc
14 changed files with 1067 additions and 3 deletions
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58
Libraries/LibDebug/Dwarf/AbbreviationsMap.h 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.
*/
#pragma once
#include "DwarfTypes.h"
#include <AK/HashMap.h>
#include <AK/Optional.h>
#include <AK/Types.h>
namespace Dwarf {
class DwarfInfo;
class AbbreviationsMap {
public:
AbbreviationsMap(const DwarfInfo& dwarf_info, u32 offset);
struct AbbreviationEntry {
EntryTag tag;
bool has_children;
Vector<AttributeSpecification> attribute_specifications;
};
Optional<AbbreviationEntry> get(u32 code) const;
private:
void populate_map();
const DwarfInfo& m_dwarf_info;
u32 m_offset { 0 };
HashMap<u32, AbbreviationEntry> m_entries;
};
}