include/llvm/MC/MCWasmObjectWriter.h

   1 //===-- llvm/MC/MCWasmObjectWriter.h - Wasm 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_MCWASMOBJECTWRITER_H
  10 #define LLVM_MC_MCWASMOBJECTWRITER_H
  11
  12 #include "llvm/MC/MCObjectWriter.h"
  13 #include <memory>
  14
  15 namespace llvm {
  16
  17 class MCFixup;
  18 class MCValue;
  19 class raw_pwrite_stream;
  20
  21 class MCWasmObjectTargetWriter : public MCObjectTargetWriter {
  22   const unsigned Is64Bit : 1;
  23
  24 protected:
  25   explicit MCWasmObjectTargetWriter(bool Is64Bit_);
  26
  27 public:
  28   virtual ~MCWasmObjectTargetWriter();
  29
  30   virtual Triple::ObjectFormatType getFormat() const { return Triple::Wasm; }
  31   static bool classof(const MCObjectTargetWriter *W) {
  32     return W->getFormat() == Triple::Wasm;
  33   }
  34
  35   virtual unsigned getRelocType(const MCValue &Target,
  36                                 const MCFixup &Fixup) const = 0;
  37
  38   /// \name Accessors
  39   /// @{
  40   bool is64Bit() const { return Is64Bit; }
  41   /// @}
  42 };
  43
  44 /// Construct a new Wasm writer instance.
  45 ///
  46 /// \param MOTW - The target specific Wasm writer subclass.
  47 /// \param OS - The stream to write to.
  48 /// \returns The constructed object writer.
  49 std::unique_ptr<MCObjectWriter>
  50 createWasmObjectWriter(std::unique_ptr<MCWasmObjectTargetWriter> MOTW,
  51                        raw_pwrite_stream &OS);
  52
  53 } // namespace llvm
  54
  55 #endif