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