1//===- DWARFAttribute.h -----------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_DEBUGINFO_DWARF_DWARFATTRIBUTE_H
10#define LLVM_DEBUGINFO_DWARF_DWARFATTRIBUTE_H
11
12#include "llvm/BinaryFormat/Dwarf.h"
13#include "llvm/DebugInfo/DWARF/DWARFFormValue.h"
14#include <cstdint>
15
16namespace llvm {
17
18//===----------------------------------------------------------------------===//
19/// Encapsulates a DWARF attribute value and all of the data required to
20/// describe the attribute value.
21///
22/// This class is designed to be used by clients that want to iterate across all
23/// attributes in a DWARFDie.
24struct DWARFAttribute {
25 /// The debug info/types offset for this attribute.
26 uint64_t Offset = 0;
27 /// The debug info/types section byte size of the data for this attribute.
28 uint32_t ByteSize = 0;
29 /// The attribute enumeration of this attribute.
30 dwarf::Attribute Attr = dwarf::Attribute(0);
31 /// The form and value for this attribute.
32 DWARFFormValue Value;
33
34 bool isValid() const {
35 return Offset != 0 && Attr != dwarf::Attribute(0);
36 }
37
38 explicit operator bool() const {
39 return isValid();
40 }
41
42 /// Identify DWARF attributes that may contain a pointer to a location list.
43 static bool mayHaveLocationList(dwarf::Attribute Attr);
44
45 /// Identifies DWARF attributes that may contain a reference to a
46 /// DWARF expression.
47 static bool mayHaveLocationExpr(dwarf::Attribute Attr);
48};
49
50} // end namespace llvm
51
52#endif // LLVM_DEBUGINFO_DWARF_DWARFATTRIBUTE_H
53