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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
51 lines
1.4 KiB
C++
51 lines
1.4 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 "DwarfInfo.h"
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#include <AK/MemoryStream.h>
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namespace Debug::Dwarf {
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DwarfInfo::DwarfInfo(const ELF::Image& elf)
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: m_elf(elf)
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{
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m_debug_info_data = section_data(".debug_info");
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m_abbreviation_data = section_data(".debug_abbrev");
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m_debug_strings_data = section_data(".debug_str");
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populate_compilation_units();
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}
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ReadonlyBytes DwarfInfo::section_data(const String& section_name) const
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{
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auto section = m_elf.lookup_section(section_name);
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if (section.is_undefined())
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return {};
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return section.bytes();
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}
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void DwarfInfo::populate_compilation_units()
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{
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if (!m_debug_info_data.data())
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return;
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InputMemoryStream stream { m_debug_info_data };
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while (!stream.eof()) {
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auto unit_offset = stream.offset();
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CompilationUnitHeader compilation_unit_header {};
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stream >> Bytes { &compilation_unit_header, sizeof(compilation_unit_header) };
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VERIFY(compilation_unit_header.address_size == sizeof(u32));
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VERIFY(compilation_unit_header.version <= 4);
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u32 length_after_header = compilation_unit_header.length - (sizeof(CompilationUnitHeader) - offsetof(CompilationUnitHeader, version));
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m_compilation_units.empend(*this, unit_offset, compilation_unit_header);
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stream.discard_or_error(length_after_header);
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}
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}
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}
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