1 //===-- SystemZAsmPrinter.h - SystemZ LLVM assembly printer ----*- 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 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZASMPRINTER_H 10 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZASMPRINTER_H 11 12 #include "SystemZMCInstLower.h" 13 #include "SystemZTargetMachine.h" 14 #include "SystemZTargetStreamer.h" 15 #include "llvm/CodeGen/AsmPrinter.h" 16 #include "llvm/CodeGen/StackMaps.h" 17 #include "llvm/MC/MCInstBuilder.h" 18 #include "llvm/Support/Compiler.h" 19 20 namespace llvm { 21 class MCStreamer; 22 class MachineInstr; 23 class Module; 24 class raw_ostream; 25 26 class LLVM_LIBRARY_VISIBILITY SystemZAsmPrinter : public AsmPrinter { 27 private: 28 StackMaps SM; 29 MCSymbol *CurrentFnPPA1Sym; // PPA1 Symbol. 30 MCSymbol *CurrentFnEPMarkerSym; // Entry Point Marker. 31 32 SystemZTargetStreamer *getTargetStreamer() { 33 MCTargetStreamer *TS = OutStreamer->getTargetStreamer(); 34 assert(TS && "do not have a target streamer"); 35 return static_cast<SystemZTargetStreamer *>(TS); 36 } 37 38 /// Call type information for XPLINK. 39 enum class CallType { 40 BASR76 = 0, // b'x000' == BASR r7,r6 41 BRAS7 = 1, // b'x001' == BRAS r7,ep 42 RESVD_2 = 2, // b'x010' 43 BRASL7 = 3, // b'x011' == BRASL r7,ep 44 RESVD_4 = 4, // b'x100' 45 RESVD_5 = 5, // b'x101' 46 BALR1415 = 6, // b'x110' == BALR r14,r15 47 BASR33 = 7, // b'x111' == BASR r3,r3 48 }; 49 50 void emitPPA1(MCSymbol *FnEndSym); 51 52 public: 53 SystemZAsmPrinter(TargetMachine &TM, std::unique_ptr<MCStreamer> Streamer) 54 : AsmPrinter(TM, std::move(Streamer)), SM(*this), 55 CurrentFnPPA1Sym(nullptr), CurrentFnEPMarkerSym(nullptr) {} 56 57 // Override AsmPrinter. 58 StringRef getPassName() const override { return "SystemZ Assembly Printer"; } 59 void emitInstruction(const MachineInstr *MI) override; 60 void emitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) override; 61 void emitEndOfAsmFile(Module &M) override; 62 bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, 63 const char *ExtraCode, raw_ostream &OS) override; 64 bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, 65 const char *ExtraCode, raw_ostream &OS) override; 66 67 bool doInitialization(Module &M) override { 68 SM.reset(); 69 return AsmPrinter::doInitialization(M); 70 } 71 void emitFunctionEntryLabel() override; 72 void emitFunctionBodyEnd() override; 73 74 private: 75 void emitCallInformation(CallType CT); 76 void LowerFENTRY_CALL(const MachineInstr &MI, SystemZMCInstLower &MCIL); 77 void LowerSTACKMAP(const MachineInstr &MI); 78 void LowerPATCHPOINT(const MachineInstr &MI, SystemZMCInstLower &Lower); 79 }; 80 } // end namespace llvm 81 82 #endif 83