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 69