1//==-- llvm/MC/MCRelocationInfo.h --------------------------------*- C++ -*-==//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file declares the MCRelocationInfo class, which provides methods to
11// create MCExprs from relocations, either found in an object::ObjectFile
12// (object::RelocationRef), or provided through the C API.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_MC_MCRELOCATIONINFO_H
17#define LLVM_MC_MCRELOCATIONINFO_H
18
19#include "llvm/Support/Compiler.h"
20
21namespace llvm {
22
23namespace object {
24class RelocationRef;
25}
26class MCExpr;
27class MCContext;
28
29/// \brief Create MCExprs from relocations found in an object file.
30class MCRelocationInfo {
31  MCRelocationInfo(const MCRelocationInfo &) LLVM_DELETED_FUNCTION;
32  void operator=(const MCRelocationInfo &) LLVM_DELETED_FUNCTION;
33
34protected:
35  MCContext &Ctx;
36
37public:
38  MCRelocationInfo(MCContext &Ctx);
39  virtual ~MCRelocationInfo();
40
41  /// \brief Create an MCExpr for the relocation \p Rel.
42  /// \returns If possible, an MCExpr corresponding to Rel, else 0.
43  virtual const MCExpr *createExprForRelocation(object::RelocationRef Rel);
44
45  /// \brief Create an MCExpr for the target-specific \p VariantKind.
46  /// The VariantKinds are defined in llvm-c/Disassembler.h.
47  /// Used by MCExternalSymbolizer.
48  /// \returns If possible, an MCExpr corresponding to VariantKind, else 0.
49  virtual const MCExpr *createExprForCAPIVariantKind(const MCExpr *SubExpr,
50                                                     unsigned VariantKind);
51};
52
53}
54
55#endif
56