1//===- DWARFRelocMap.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_DWARFRELOCMAP_H
10#define LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H
11
12#include "llvm/ADT/DenseMap.h"
13#include "llvm/Object/RelocationResolver.h"
14#include <cstdint>
15
16namespace llvm {
17
18/// RelocAddrEntry contains relocated value and section index.
19/// Section index is -1LL if relocation points to absolute symbol.
20struct RelocAddrEntry {
21 uint64_t SectionIndex;
22 object::RelocationRef Reloc;
23 uint64_t SymbolValue;
24 Optional<object::RelocationRef> Reloc2;
25 uint64_t SymbolValue2;
26 object::RelocationResolver Resolver;
27};
28
29/// In place of applying the relocations to the data we've read from disk we use
30/// a separate mapping table to the side and checking that at locations in the
31/// dwarf where we expect relocated values. This adds a bit of complexity to the
32/// dwarf parsing/extraction at the benefit of not allocating memory for the
33/// entire size of the debug info sections.
34using RelocAddrMap = DenseMap<uint64_t, RelocAddrEntry>;
35
36} // end namespace llvm
37
38#endif // LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H
39