X86AsmPrinter.h

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//===-- X86AsmPrinter.h - X86 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 X86ASMPRINTER_H
#define X86ASMPRINTER_H

#include "X86.h"
#include "X86MachineFunctionInfo.h"
#include "X86TargetMachine.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGen/StackMaps.h"
#include "llvm/Support/Compiler.h"

namespace llvm {

class MCStreamer;

class LLVM_LIBRARY_VISIBILITY X86AsmPrinter : public AsmPrinter {
  const X86Subtarget *Subtarget;
  StackMaps SM;

  // Parses operands of PATCHPOINT and STACKMAP to produce stack map Location
  // structures. Returns a result location and an iterator to the operand
  // immediately following the operands consumed.
  //
  // This method is implemented in X86MCInstLower.cpp.
  static std::pair<StackMaps::Location, MachineInstr::const_mop_iterator>
    stackmapOperandParser(MachineInstr::const_mop_iterator MOI,
                          MachineInstr::const_mop_iterator MOE,
                          const TargetMachine &TM);

 public:
  explicit X86AsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
    : AsmPrinter(TM, Streamer), SM(*this, stackmapOperandParser) {
    Subtarget = &TM.getSubtarget<X86Subtarget>();
  }

  virtual const char *getPassName() const LLVM_OVERRIDE {
    return "X86 Assembly / Object Emitter";
  }

  const X86Subtarget &getSubtarget() const { return *Subtarget; }

  virtual void EmitStartOfAsmFile(Module &M) LLVM_OVERRIDE;

  virtual void EmitEndOfAsmFile(Module &M) LLVM_OVERRIDE;

  virtual void EmitInstruction(const MachineInstr *MI) LLVM_OVERRIDE;

  void printSymbolOperand(const MachineOperand &MO, raw_ostream &O);

  // These methods are used by the tablegen'erated instruction printer.
  void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O,
                    const char *Modifier = 0, unsigned AsmVariant = 0);
  void printPCRelImm(const MachineInstr *MI, unsigned OpNo, raw_ostream &O);

  bool printAsmMRegister(const MachineOperand &MO, char Mode, raw_ostream &O);
  virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
                               unsigned AsmVariant, const char *ExtraCode,
                               raw_ostream &OS) LLVM_OVERRIDE;
  virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
                                     unsigned AsmVariant, const char *ExtraCode,
                                     raw_ostream &OS) LLVM_OVERRIDE;

  void printMemReference(const MachineInstr *MI, unsigned Op, raw_ostream &O,
                         const char *Modifier=NULL);
  void printLeaMemReference(const MachineInstr *MI, unsigned Op, raw_ostream &O,
                            const char *Modifier=NULL);

  void printIntelMemReference(const MachineInstr *MI, unsigned Op,
                              raw_ostream &O, const char *Modifier=NULL,
                              unsigned AsmVariant = 1);

  virtual bool runOnMachineFunction(MachineFunction &F) LLVM_OVERRIDE;
};

} // end namespace llvm

#endif