1 //==-- WebAssemblyTargetStreamer.h - WebAssembly Target Streamer -*- 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 /// \file
11 /// \brief This file declares WebAssembly-specific target streamer classes.
12 /// These are for implementing support for target-specific assembly directives.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
17 #define LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYTARGETSTREAMER_H
18 
19 #include "llvm/CodeGen/MachineValueType.h"
20 #include "llvm/MC/MCStreamer.h"
21 
22 namespace llvm {
23 
24 class MCELFStreamer;
25 
26 /// WebAssembly-specific streamer interface, to implement support
27 /// WebAssembly-specific assembly directives.
28 class WebAssemblyTargetStreamer : public MCTargetStreamer {
29 public:
30   explicit WebAssemblyTargetStreamer(MCStreamer &S);
31 
32   /// .param
33   virtual void emitParam(ArrayRef<MVT> Types) = 0;
34   /// .result
35   virtual void emitResult(ArrayRef<MVT> Types) = 0;
36   /// .local
37   virtual void emitLocal(ArrayRef<MVT> Types) = 0;
38   /// .endfunc
39   virtual void emitEndFunc() = 0;
40 };
41 
42 /// This part is for ascii assembly output
43 class WebAssemblyTargetAsmStreamer final : public WebAssemblyTargetStreamer {
44   formatted_raw_ostream &OS;
45 
46 public:
47   WebAssemblyTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
48 
49   void emitParam(ArrayRef<MVT> Types) override;
50   void emitResult(ArrayRef<MVT> Types) override;
51   void emitLocal(ArrayRef<MVT> Types) override;
52   void emitEndFunc() override;
53 };
54 
55 /// This part is for ELF object output
56 class WebAssemblyTargetELFStreamer final : public WebAssemblyTargetStreamer {
57 public:
58   explicit WebAssemblyTargetELFStreamer(MCStreamer &S);
59 
60   void emitParam(ArrayRef<MVT> Types) override;
61   void emitResult(ArrayRef<MVT> Types) override;
62   void emitLocal(ArrayRef<MVT> Types) override;
63   void emitEndFunc() override;
64 };
65 
66 } // end namespace llvm
67 
68 #endif
69