Mercurial > hg > CbC > CbC_llvm
diff lib/Target/ARM/ARMAsmPrinter.h @ 0:95c75e76d11b LLVM3.4
LLVM 3.4
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Thu, 12 Dec 2013 13:56:28 +0900 |
parents | |
children | e4204d083e25 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lib/Target/ARM/ARMAsmPrinter.h Thu Dec 12 13:56:28 2013 +0900 @@ -0,0 +1,128 @@ +//===-- ARMAsmPrinter.h - ARM implementation of AsmPrinter ------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef ARMASMPRINTER_H +#define ARMASMPRINTER_H + +#include "ARM.h" +#include "ARMTargetMachine.h" +#include "llvm/CodeGen/AsmPrinter.h" +#include "llvm/Support/Compiler.h" + +namespace llvm { + +class MCOperand; + +namespace ARM { + enum DW_ISA { + DW_ISA_ARM_thumb = 1, + DW_ISA_ARM_arm = 2 + }; +} + +class LLVM_LIBRARY_VISIBILITY ARMAsmPrinter : public AsmPrinter { + + /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can + /// make the right decision when printing asm code for different targets. + const ARMSubtarget *Subtarget; + + /// AFI - Keep a pointer to ARMFunctionInfo for the current + /// MachineFunction. + ARMFunctionInfo *AFI; + + /// MCP - Keep a pointer to constantpool entries of the current + /// MachineFunction. + const MachineConstantPool *MCP; + + /// InConstantPool - Maintain state when emitting a sequence of constant + /// pool entries so we can properly mark them as data regions. + bool InConstantPool; +public: + explicit ARMAsmPrinter(TargetMachine &TM, MCStreamer &Streamer) + : AsmPrinter(TM, Streamer), AFI(NULL), MCP(NULL), InConstantPool(false) { + Subtarget = &TM.getSubtarget<ARMSubtarget>(); + } + + virtual const char *getPassName() const LLVM_OVERRIDE { + return "ARM Assembly / Object Emitter"; + } + + void printOperand(const MachineInstr *MI, int OpNum, raw_ostream &O, + const char *Modifier = 0); + + virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNum, + unsigned AsmVariant, const char *ExtraCode, + raw_ostream &O) LLVM_OVERRIDE; + virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum, + unsigned AsmVariant, const char *ExtraCode, + raw_ostream &O) LLVM_OVERRIDE; + + void EmitJumpTable(const MachineInstr *MI); + void EmitJump2Table(const MachineInstr *MI); + virtual void EmitInstruction(const MachineInstr *MI) LLVM_OVERRIDE; + virtual bool runOnMachineFunction(MachineFunction &F) LLVM_OVERRIDE; + + virtual void EmitConstantPool() LLVM_OVERRIDE { + // we emit constant pools customly! + } + virtual void EmitFunctionBodyEnd() LLVM_OVERRIDE; + virtual void EmitFunctionEntryLabel() LLVM_OVERRIDE; + virtual void EmitStartOfAsmFile(Module &M) LLVM_OVERRIDE; + virtual void EmitEndOfAsmFile(Module &M) LLVM_OVERRIDE; + virtual void EmitXXStructor(const Constant *CV) LLVM_OVERRIDE; + + // lowerOperand - Convert a MachineOperand into the equivalent MCOperand. + bool lowerOperand(const MachineOperand &MO, MCOperand &MCOp); + +private: + // Helpers for EmitStartOfAsmFile() and EmitEndOfAsmFile() + void emitAttributes(); + + // Helper for ELF .o only + void emitARMAttributeSection(); + + // Generic helper used to emit e.g. ARMv5 mul pseudos + void EmitPatchedInstruction(const MachineInstr *MI, unsigned TargetOpc); + + void EmitUnwindingInstruction(const MachineInstr *MI); + + // emitPseudoExpansionLowering - tblgen'erated. + bool emitPseudoExpansionLowering(MCStreamer &OutStreamer, + const MachineInstr *MI); + +public: + /// EmitDwarfRegOp - Emit dwarf register operation. + virtual void EmitDwarfRegOp(const MachineLocation &MLoc, bool Indirect) const + LLVM_OVERRIDE; + + virtual unsigned getISAEncoding() LLVM_OVERRIDE { + // ARM/Darwin adds ISA to the DWARF info for each function. + if (!Subtarget->isTargetDarwin()) + return 0; + return Subtarget->isThumb() ? + ARM::DW_ISA_ARM_thumb : ARM::DW_ISA_ARM_arm; + } + +private: + MCOperand GetSymbolRef(const MachineOperand &MO, const MCSymbol *Symbol); + MCSymbol *GetARMJTIPICJumpTableLabel2(unsigned uid, unsigned uid2) const; + + MCSymbol *GetARMSJLJEHLabel() const; + + MCSymbol *GetARMGVSymbol(const GlobalValue *GV); + +public: + /// EmitMachineConstantPoolValue - Print a machine constantpool value to + /// the .s file. + virtual void + EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) LLVM_OVERRIDE; +}; +} // end namespace llvm + +#endif