mirror of
https://github.com/RGBCube/serenity
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8e5b70a0ba
This will be needed when we add `DW_FORM_strx*` and `DW_FORM_addrx*` support, which requires us to fetch `DW_AT_str_offsets_base` and `DW_AT_addr_base` attributes from the parent compilation unit. This can't be done as we read the values, because it would create infinite recursion (as we might try to parse the compilation unit's `DW_FORM_strx*` encoded name before we get to the attribute). Having getters ensures that we will perform lookups if they are needed.
59 lines
1.4 KiB
C++
59 lines
1.4 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 { return m_data.as_addr; }
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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 { return m_data.as_string; }
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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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