include/llvm/MC/MCWinCOFFObjectWriter.h

   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     virtual Triple::ObjectFormatType getFormat() const { 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 } // end namespace llvm
  55
  56 #endif // LLVM_MC_MCWINCOFFOBJECTWRITER_H