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 
getFormat()30   virtual Triple::ObjectFormatType getFormat() const { return Triple::Wasm; }
classof(const MCObjectTargetWriter * W)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   /// @{
is64Bit()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
56