1 //===- HexagonAsmPrinter.h - Print machine code to an Hexagon .s file -----===// 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 // Hexagon Assembly printer class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H 14 #define LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H 15 16 #include "HexagonSubtarget.h" 17 #include "llvm/CodeGen/AsmPrinter.h" 18 #include "llvm/CodeGen/MachineFunction.h" 19 #include "llvm/MC/MCStreamer.h" 20 #include <utility> 21 22 namespace llvm { 23 24 class MachineInstr; 25 class MCInst; 26 class raw_ostream; 27 class TargetMachine; 28 29 class HexagonAsmPrinter : public AsmPrinter { 30 const HexagonSubtarget *Subtarget = nullptr; 31 32 public: 33 explicit HexagonAsmPrinter(TargetMachine &TM, 34 std::unique_ptr<MCStreamer> Streamer) 35 : AsmPrinter(TM, std::move(Streamer)) {} 36 37 bool runOnMachineFunction(MachineFunction &Fn) override { 38 Subtarget = &Fn.getSubtarget<HexagonSubtarget>(); 39 const bool Modified = AsmPrinter::runOnMachineFunction(Fn); 40 // Emit the XRay table for this function. 41 emitXRayTable(); 42 43 return Modified; 44 } 45 46 StringRef getPassName() const override { 47 return "Hexagon Assembly Printer"; 48 } 49 50 bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) 51 const override; 52 53 void emitInstruction(const MachineInstr *MI) override; 54 55 //===------------------------------------------------------------------===// 56 // XRay implementation 57 //===------------------------------------------------------------------===// 58 // XRay-specific lowering for Hexagon. 59 void LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI); 60 void LowerPATCHABLE_FUNCTION_EXIT(const MachineInstr &MI); 61 void LowerPATCHABLE_TAIL_CALL(const MachineInstr &MI); 62 void EmitSled(const MachineInstr &MI, SledKind Kind); 63 64 void HexagonProcessInstruction(MCInst &Inst, const MachineInstr &MBB); 65 66 void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O); 67 bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, 68 const char *ExtraCode, raw_ostream &OS) override; 69 bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, 70 const char *ExtraCode, raw_ostream &OS) override; 71 }; 72 73 } // end namespace llvm 74 75 #endif // LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H 76