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
15namespace llvm {
16
17class MCFixup;
18class MCSectionWasm;
19class MCValue;
20class raw_pwrite_stream;
21
22class MCWasmObjectTargetWriter : public MCObjectTargetWriter {
23 const unsigned Is64Bit : 1;
24 const unsigned IsEmscripten : 1;
25
26protected:
27 explicit MCWasmObjectTargetWriter(bool Is64Bit_, bool IsEmscripten);
28
29public:
30 virtual ~MCWasmObjectTargetWriter();
31
32 Triple::ObjectFormatType getFormat() const override { return Triple::Wasm; }
33 static bool classof(const MCObjectTargetWriter *W) {
34 return W->getFormat() == Triple::Wasm;
35 }
36
37 virtual unsigned getRelocType(const MCValue &Target, const MCFixup &Fixup,
38 const MCSectionWasm &FixupSection,
39 bool IsLocRel) const = 0;
40
41 /// \name Accessors
42 /// @{
43 bool is64Bit() const { return Is64Bit; }
44 bool isEmscripten() const { return IsEmscripten; }
45 /// @}
46};
47
48/// Construct a new Wasm writer instance.
49///
50/// \param MOTW - The target specific Wasm writer subclass.
51/// \param OS - The stream to write to.
52/// \returns The constructed object writer.
53std::unique_ptr<MCObjectWriter>
54createWasmObjectWriter(std::unique_ptr<MCWasmObjectTargetWriter> MOTW,
55 raw_pwrite_stream &OS);
56
57std::unique_ptr<MCObjectWriter>
58createWasmDwoObjectWriter(std::unique_ptr<MCWasmObjectTargetWriter> MOTW,
59 raw_pwrite_stream &OS, raw_pwrite_stream &DwoOS);
60
61} // namespace llvm
62
63#endif
64

source code of llvm/include/llvm/MC/MCWasmObjectWriter.h