1 //===- RelocVisitor.h - Visitor for object file relocations -----*- 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 // This file provides a wrapper around all the different types of relocations
10 // in different file formats, such that a client can handle them in a unified
11 // manner by only implementing a minimal number of functions.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_OBJECT_RELOCATIONRESOLVER_H
16 #define LLVM_OBJECT_RELOCATIONRESOLVER_H
17 
18 #include "llvm/ADT/Triple.h"
19 #include "llvm/BinaryFormat/ELF.h"
20 #include "llvm/BinaryFormat/MachO.h"
21 #include "llvm/Object/COFF.h"
22 #include "llvm/Object/ELFObjectFile.h"
23 #include "llvm/Object/MachO.h"
24 #include "llvm/Object/ObjectFile.h"
25 #include "llvm/Object/Wasm.h"
26 #include "llvm/Support/Casting.h"
27 #include "llvm/Support/ErrorHandling.h"
28 #include <cstdint>
29 #include <system_error>
30 
31 namespace llvm {
32 namespace object {
33 
34 using SupportsRelocation = bool (*)(uint64_t);
35 using RelocationResolver = uint64_t (*)(uint64_t Type, uint64_t Offset,
36                                         uint64_t S, uint64_t LocData,
37                                         int64_t Addend);
38 
39 std::pair<SupportsRelocation, RelocationResolver>
40 getRelocationResolver(const ObjectFile &Obj);
41 
42 uint64_t resolveRelocation(RelocationResolver Resolver, const RelocationRef &R,
43                            uint64_t S, uint64_t LocData);
44 
45 } // end namespace object
46 } // end namespace llvm
47 
48 #endif // LLVM_OBJECT_RELOCATIONRESOLVER_H
49