llvm/MC/MCDXContainerWriter.h

0001 //===- llvm/MC/MCDXContainerWriter.h - DXContainer Writer -*- C++ -------*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef LLVM_MC_MCDXCONTAINERWRITER_H
0010 #define LLVM_MC_MCDXCONTAINERWRITER_H
0011
0012 #include "llvm/MC/MCObjectWriter.h"
0013 #include "llvm/MC/MCValue.h"
0014 #include "llvm/Support/EndianStream.h"
0015 #include "llvm/TargetParser/Triple.h"
0016
0017 namespace llvm {
0018
0019 class raw_pwrite_stream;
0020
0021 class MCDXContainerTargetWriter : public MCObjectTargetWriter {
0022 protected:
0023   MCDXContainerTargetWriter() {}
0024
0025 public:
0026   virtual ~MCDXContainerTargetWriter();
0027
0028   Triple::ObjectFormatType getFormat() const override {
0029     return Triple::DXContainer;
0030   }
0031   static bool classof(const MCObjectTargetWriter *W) {
0032     return W->getFormat() == Triple::DXContainer;
0033   }
0034 };
0035
0036 class DXContainerObjectWriter final : public MCObjectWriter {
0037   support::endian::Writer W;
0038   std::unique_ptr<MCDXContainerTargetWriter> TargetObjectWriter;
0039
0040 public:
0041   DXContainerObjectWriter(std::unique_ptr<MCDXContainerTargetWriter> MOTW,
0042                           raw_pwrite_stream &OS)
0043       : W(OS, llvm::endianness::little), TargetObjectWriter(std::move(MOTW)) {}
0044
0045   void recordRelocation(MCAssembler &Asm, const MCFragment *Fragment,
0046                         const MCFixup &Fixup, MCValue Target,
0047                         uint64_t &FixedValue) override {}
0048
0049   uint64_t writeObject(MCAssembler &Asm) override;
0050 };
0051 } // end namespace llvm
0052
0053 #endif // LLVM_MC_MCDXCONTAINERWRITER_H