llvm-6502/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.h

//===-- X86MCTargetDesc.h - X86 Target Descriptions -------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides X86 specific target descriptions.
//
//===----------------------------------------------------------------------===//

#ifndef X86MCTARGETDESC_H
#define X86MCTARGETDESC_H

#include "llvm/Support/DataTypes.h"
#include <string>

namespace llvm {
class MCAsmBackend;
class MCCodeEmitter;
class MCContext;
class MCInstrInfo;
class MCObjectWriter;
class MCRegisterInfo;
class MCSubtargetInfo;
class Target;
class StringRef;
class raw_ostream;

extern Target TheX86_32Target, TheX86_64Target;

/// DWARFFlavour - Flavour of dwarf regnumbers
///
namespace DWARFFlavour {
  enum {
    X86_64 = 0, X86_32_DarwinEH = 1, X86_32_Generic = 2
  };
} 
  
/// N86 namespace - Native X86 register numbers
///
namespace N86 {
  enum {
    EAX = 0, ECX = 1, EDX = 2, EBX = 3, ESP = 4, EBP = 5, ESI = 6, EDI = 7
  };
}

namespace X86_MC {
  std::string ParseX86Triple(StringRef TT);

  /// GetCpuIDAndInfo - Execute the specified cpuid and return the 4 values in
  /// the specified arguments.  If we can't run cpuid on the host, return true.
  bool GetCpuIDAndInfo(unsigned value, unsigned *rEAX,
                       unsigned *rEBX, unsigned *rECX, unsigned *rEDX);

  void DetectFamilyModel(unsigned EAX, unsigned &Family, unsigned &Model);

  unsigned getDwarfRegFlavour(StringRef TT, bool isEH);

  unsigned getX86RegNum(unsigned RegNo);

  void InitLLVM2SEHRegisterMapping(MCRegisterInfo *MRI);

  /// createX86MCSubtargetInfo - Create a X86 MCSubtargetInfo instance.
  /// This is exposed so Asm parser, etc. do not need to go through
  /// TargetRegistry.
  MCSubtargetInfo *createX86MCSubtargetInfo(StringRef TT, StringRef CPU,
                                            StringRef FS);
}

MCCodeEmitter *createX86MCCodeEmitter(const MCInstrInfo &MCII,
                                      const MCSubtargetInfo &STI,
                                      MCContext &Ctx);

MCAsmBackend *createX86_32AsmBackend(const Target &T, StringRef TT);
MCAsmBackend *createX86_64AsmBackend(const Target &T, StringRef TT);

/// createX86MachObjectWriter - Construct an X86 Mach-O object writer.
MCObjectWriter *createX86MachObjectWriter(raw_ostream &OS,
                                          bool Is64Bit,
                                          uint32_t CPUType,
                                          uint32_t CPUSubtype);

} // End llvm namespace


// Defines symbolic names for X86 registers.  This defines a mapping from
// register name to register number.
//
#define GET_REGINFO_ENUM
#include "X86GenRegisterInfo.inc"

// Defines symbolic names for the X86 instructions.
//
#define GET_INSTRINFO_ENUM
#include "X86GenInstrInfo.inc"

#define GET_SUBTARGETINFO_ENUM
#include "X86GenSubtargetInfo.inc"

#endif