1 | //===-- llvm/MC/MCWasmObjectWriter.h - Wasm Object Writer -------*- C++ -*-===// |
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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 MCSectionWasm; |
19 | class MCValue; |
20 | class raw_pwrite_stream; |
21 | |
22 | class MCWasmObjectTargetWriter : public MCObjectTargetWriter { |
23 | const unsigned Is64Bit : 1; |
24 | const unsigned IsEmscripten : 1; |
25 | |
26 | protected: |
27 | explicit MCWasmObjectTargetWriter(bool Is64Bit_, bool IsEmscripten); |
28 | |
29 | public: |
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. |
53 | std::unique_ptr<MCObjectWriter> |
54 | createWasmObjectWriter(std::unique_ptr<MCWasmObjectTargetWriter> MOTW, |
55 | raw_pwrite_stream &OS); |
56 | |
57 | std::unique_ptr<MCObjectWriter> |
58 | createWasmDwoObjectWriter(std::unique_ptr<MCWasmObjectTargetWriter> MOTW, |
59 | raw_pwrite_stream &OS, raw_pwrite_stream &DwoOS); |
60 | |
61 | } // namespace llvm |
62 | |
63 | #endif |
64 |