1 //===- llvm/MC/MCWinCOFFObjectWriter.h - Win COFF Object Writer -*- 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_MC_MCWINCOFFOBJECTWRITER_H
10 #define LLVM_MC_MCWINCOFFOBJECTWRITER_H
11 
12 #include "llvm/MC/MCObjectWriter.h"
13 #include <memory>
14 
15 namespace llvm {
16 
17 class MCAsmBackend;
18 class MCContext;
19 class MCFixup;
20 class MCValue;
21 class raw_pwrite_stream;
22 
23 class MCWinCOFFObjectTargetWriter : public MCObjectTargetWriter {
24   virtual void anchor();
25 
26   const unsigned Machine;
27 
28 protected:
29   MCWinCOFFObjectTargetWriter(unsigned Machine_);
30 
31 public:
32   virtual ~MCWinCOFFObjectTargetWriter() = default;
33 
34   Triple::ObjectFormatType getFormat() const override { return Triple::COFF; }
35   static bool classof(const MCObjectTargetWriter *W) {
36     return W->getFormat() == Triple::COFF;
37   }
38 
39   unsigned getMachine() const { return Machine; }
40   virtual unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
41                                 const MCFixup &Fixup, bool IsCrossSection,
42                                 const MCAsmBackend &MAB) const = 0;
43   virtual bool recordRelocation(const MCFixup &) const { return true; }
44 };
45 
46 /// Construct a new Win COFF writer instance.
47 ///
48 /// \param MOTW - The target specific WinCOFF writer subclass.
49 /// \param OS - The stream to write to.
50 /// \returns The constructed object writer.
51 std::unique_ptr<MCObjectWriter>
52 createWinCOFFObjectWriter(std::unique_ptr<MCWinCOFFObjectTargetWriter> MOTW,
53                           raw_pwrite_stream &OS);
54 
55 std::unique_ptr<MCObjectWriter>
56 createWinCOFFDwoObjectWriter(std::unique_ptr<MCWinCOFFObjectTargetWriter> MOTW,
57                              raw_pwrite_stream &OS, raw_pwrite_stream &DwoOS);
58 } // end namespace llvm
59 
60 #endif // LLVM_MC_MCWINCOFFOBJECTWRITER_H
61