lib/Target/WebAssembly/MCTargetDesc/WebAssemblyInstPrinter.h

   1 // WebAssemblyInstPrinter.h - Print wasm MCInst to assembly syntax -*- 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 /// \file
  10 /// This class prints an WebAssembly MCInst to wasm file syntax.
  11 ///
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
  15 #define LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
  16
  17 #include "llvm/ADT/SmallVector.h"
  18 #include "llvm/BinaryFormat/Wasm.h"
  19 #include "llvm/MC/MCInstPrinter.h"
  20 #include "llvm/Support/MachineValueType.h"
  21
  22 namespace llvm {
  23
  24 class MCSubtargetInfo;
  25
  26 class WebAssemblyInstPrinter final : public MCInstPrinter {
  27   uint64_t ControlFlowCounter = 0;
  28   uint64_t EHPadStackCounter = 0;
  29   SmallVector<std::pair<uint64_t, bool>, 4> ControlFlowStack;
  30   SmallVector<uint64_t, 4> EHPadStack;
  31
  32   enum EHInstKind { TRY, CATCH, END_TRY };
  33   EHInstKind LastSeenEHInst = END_TRY;
  34
  35 public:
  36   WebAssemblyInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
  37                          const MCRegisterInfo &MRI);
  38
  39   void printRegName(raw_ostream &OS, unsigned RegNo) const override;
  40   void printInst(const MCInst *MI, raw_ostream &OS, StringRef Annot,
  41                  const MCSubtargetInfo &STI) override;
  42
  43   // Used by tblegen code.
  44   void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
  45   void printBrList(const MCInst *MI, unsigned OpNo, raw_ostream &O);
  46   void printWebAssemblyP2AlignOperand(const MCInst *MI, unsigned OpNo,
  47                                       raw_ostream &O);
  48   void printWebAssemblySignatureOperand(const MCInst *MI, unsigned OpNo,
  49                                         raw_ostream &O);
  50
  51   // Autogenerated by tblgen.
  52   void printInstruction(const MCInst *MI, raw_ostream &O);
  53   static const char *getRegisterName(unsigned RegNo);
  54 };
  55
  56 namespace WebAssembly {
  57
  58 const char *typeToString(wasm::ValType Ty);
  59 const char *anyTypeToString(unsigned Ty);
  60
  61 std::string typeListToString(ArrayRef<wasm::ValType> List);
  62 std::string signatureToString(const wasm::WasmSignature *Sig);
  63
  64 } // end namespace WebAssembly
  65
  66 } // end namespace llvm
  67
  68 #endif