1 //===-- llvm/MC/MCWasmObjectWriter.h - Wasm Object Writer -------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef LLVM_MC_MCWASMOBJECTWRITER_H
11 #define LLVM_MC_MCWASMOBJECTWRITER_H
12 
13 #include "llvm/MC/MCObjectWriter.h"
14 #include <memory>
15 
16 namespace llvm {
17 
18 class MCFixup;
19 class MCValue;
20 class raw_pwrite_stream;
21 
22 class MCWasmObjectTargetWriter : public MCObjectTargetWriter {
23   const unsigned Is64Bit : 1;
24 
25 protected:
26   explicit MCWasmObjectTargetWriter(bool Is64Bit_);
27 
28 public:
29   virtual ~MCWasmObjectTargetWriter();
30 
getFormat()31   virtual Triple::ObjectFormatType getFormat() const { return Triple::Wasm; }
classof(const MCObjectTargetWriter * W)32   static bool classof(const MCObjectTargetWriter *W) {
33     return W->getFormat() == Triple::Wasm;
34   }
35 
36   virtual unsigned getRelocType(const MCValue &Target,
37                                 const MCFixup &Fixup) const = 0;
38 
39   /// \name Accessors
40   /// @{
is64Bit()41   bool is64Bit() const { return Is64Bit; }
42   /// @}
43 };
44 
45 /// Construct a new Wasm writer instance.
46 ///
47 /// \param MOTW - The target specific Wasm writer subclass.
48 /// \param OS - The stream to write to.
49 /// \returns The constructed object writer.
50 std::unique_ptr<MCObjectWriter>
51 createWasmObjectWriter(std::unique_ptr<MCWasmObjectTargetWriter> MOTW,
52                        raw_pwrite_stream &OS);
53 
54 } // End llvm namespace
55 
56 #endif
57