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LibDebug: Support parsing non-contiguous DWARF address ranges

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This adds support for parsing DWARF "range lists", which are identified
by the DW_AT_ranges form.

They contain code addresses for DIEs whose location is not contiguous.
This commit is contained in:
Itamar 2021-09-28 13:19:32 +03:00 • committed by Andreas Kling
commit 26a96d315d
Notes: sideshowbarker 2024-07-18 03:22:36 +09:00
4 changed files with 115 additions and 0 deletions
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35
Userland/Libraries/LibDebug/Dwarf/AddressRanges.h Normal file
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/*
* Copyright (c) 2020-2021, Itamar S. <itamar8910@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "CompilationUnit.h"
#include <AK/Forward.h>
#include <AK/Function.h>
#include <AK/MemoryStream.h>
#include <AK/Noncopyable.h>
namespace Debug::Dwarf {
class AddressRanges {
AK_MAKE_NONCOPYABLE(AddressRanges);
AK_MAKE_NONMOVABLE(AddressRanges);
public:
AddressRanges(ReadonlyBytes range_lists_data, size_t offset, CompilationUnit const& compilation_unit);
struct Range {
FlatPtr start { 0 };
FlatPtr end { 0 };
};
void for_each_range(Function<void(Range)>);
private:
InputMemoryStream m_range_lists_stream;
CompilationUnit const& m_compilation_unit;
};
}