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47 lines
1.2 KiB
C++
47 lines
1.2 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 "CompilationUnit.h"
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#include "DIE.h"
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namespace Debug::Dwarf {
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CompilationUnit::CompilationUnit(DwarfInfo const& dwarf_info, u32 offset, CompilationUnitHeader const& header, NonnullOwnPtr<LineProgram>&& line_program)
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: m_dwarf_info(dwarf_info)
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, m_offset(offset)
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, m_header(header)
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, m_abbreviations(dwarf_info, header.abbrev_offset())
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, m_line_program(move(line_program))
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{
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VERIFY(header.version() < 5 || header.unit_type() == CompilationUnitType::Full);
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}
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DIE CompilationUnit::root_die() const
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{
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return DIE(*this, m_offset + m_header.header_size());
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}
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DIE CompilationUnit::get_die_at_offset(u32 die_offset) const
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{
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VERIFY(die_offset >= offset() && die_offset < offset() + size());
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return DIE(*this, die_offset);
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}
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Optional<FlatPtr> CompilationUnit::base_address() const
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{
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if (m_has_cached_base_address)
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return m_cached_base_address;
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auto die = root_die();
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auto res = die.get_attribute(Attribute::LowPc);
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if (res.has_value()) {
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m_cached_base_address = res->data.as_addr;
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}
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m_has_cached_base_address = true;
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return m_cached_base_address;
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}
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}
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