ac53569bd1
These forms were introduced in DWARF5, and have a fair deal of advantages over the more traditional encodings: they reduce the size of the binary and the number of relocations. GCC does not emit these with `-g1` by default, but Clang does at all debug levels.
59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
/*
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* Copyright (c) 2021, 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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#pragma once
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#include <AK/Span.h>
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#include <AK/Types.h>
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#include <LibDebug/Dwarf/DwarfTypes.h>
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namespace Debug::Dwarf {
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class CompilationUnit;
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class AttributeValue {
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friend class DwarfInfo;
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public:
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enum class Type : u8 {
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UnsignedNumber,
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SignedNumber,
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String,
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DieReference, // Reference to another DIE in the same compilation unit
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Boolean,
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DwarfExpression,
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SecOffset,
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RawBytes,
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Address
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};
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Type type() const { return m_type; }
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AttributeDataForm form() const { return m_form; }
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FlatPtr as_addr() const;
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u64 as_unsigned() const { return m_data.as_unsigned; }
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i64 as_signed() const { return m_data.as_signed; }
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const char* as_string() const;
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bool as_bool() const { return m_data.as_bool; }
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ReadonlyBytes as_raw_bytes() const { return m_data.as_raw_bytes; }
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private:
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Type m_type;
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union {
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FlatPtr as_addr;
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u64 as_unsigned;
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i64 as_signed;
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const char* as_string; // points to bytes in the memory mapped elf image
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bool as_bool;
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ReadonlyBytes as_raw_bytes;
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} m_data {};
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AttributeDataForm m_form {};
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CompilationUnit const* m_compilation_unit { nullptr };
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};
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}
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