//===-- PPCMCTargetDesc.h - PowerPC 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 PowerPC specific target descriptions.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H

#define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H

// GCC #defines PPC on Linux but we use it as our namespace name

#undef PPC

#include "llvm/Support/DataTypes.h"

#include "llvm/Support/MathExtras.h"

namespace llvm_ks {

class MCAsmBackend;

class MCCodeEmitter;

class MCContext;

class MCInstrInfo;

class MCObjectWriter;

class MCRegisterInfo;

class MCSubtargetInfo;

class Target;

class Triple;

class StringRef;

class raw_pwrite_stream;

class raw_ostream;

extern Target ThePPC32Target;

extern Target ThePPC64Target;

extern Target ThePPC64LETarget;

MCCodeEmitter *createPPCMCCodeEmitter(const MCInstrInfo &MCII,

                                      const MCRegisterInfo &MRI,

                                      MCContext &Ctx);

MCAsmBackend *createPPCAsmBackend(const Target &T, const MCRegisterInfo &MRI,

                                  const Triple &TT, StringRef CPU);

/// Construct an PPC ELF object writer.

MCObjectWriter *createPPCELFObjectWriter(raw_pwrite_stream &OS, bool Is64Bit,

                                         bool IsLittleEndian, uint8_t OSABI);

/// Construct a PPC Mach-O object writer.

MCObjectWriter *createPPCMachObjectWriter(raw_pwrite_stream &OS, bool Is64Bit,

                                          uint32_t CPUType,

                                          uint32_t CPUSubtype);

/// Returns true iff Val consists of one contiguous run of 1s with any number of

/// 0s on either side.  The 1s are allowed to wrap from LSB to MSB, so

/// 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs.  0x0F0F0000 is not,

/// since all 1s are not contiguous.

static inline bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME) {

  if (!Val)

    return false;

  if (isShiftedMask_32(Val)) {

    // look for the first non-zero bit

    MB = countLeadingZeros(Val);

    // look for the first zero bit after the run of ones

    ME = countLeadingZeros((Val - 1) ^ Val);

    return true;

  } else {

    Val = ~Val; // invert mask

    if (isShiftedMask_32(Val)) {

      // effectively look for the first zero bit

      ME = countLeadingZeros(Val) - 1;

      // effectively look for the first one bit after the run of zeros

      MB = countLeadingZeros((Val - 1) ^ Val) + 1;

      return true;

    }

  }

  // no run present

  return false;

}

Unexecuted instantiation: PPCAsmParser.cpp:llvm_ks::isRunOfOnes(unsigned int, unsigned int&, unsigned int&)

Unexecuted instantiation: PPCMCTargetDesc.cpp:llvm_ks::isRunOfOnes(unsigned int, unsigned int&, unsigned int&)

Unexecuted instantiation: PowerPCTargetInfo.cpp:llvm_ks::isRunOfOnes(unsigned int, unsigned int&, unsigned int&)

Unexecuted instantiation: PPCAsmBackend.cpp:llvm_ks::isRunOfOnes(unsigned int, unsigned int&, unsigned int&)

Unexecuted instantiation: PPCELFObjectWriter.cpp:llvm_ks::isRunOfOnes(unsigned int, unsigned int&, unsigned int&)

Unexecuted instantiation: PPCMCCodeEmitter.cpp:llvm_ks::isRunOfOnes(unsigned int, unsigned int&, unsigned int&)

} // End llvm namespace

// Generated files will use "namespace PPC". To avoid symbol clash,

// undefine PPC here. PPC may be predefined on some hosts.

#undef PPC

// Defines symbolic names for PowerPC registers.  This defines a mapping from

// register name to register number.

//

#define GET_REGINFO_ENUM

#include "PPCGenRegisterInfo.inc"

// Defines symbolic names for the PowerPC instructions.

//

#define GET_INSTRINFO_ENUM

#include "PPCGenInstrInfo.inc"

#define GET_SUBTARGETINFO_ENUM

#include "PPCGenSubtargetInfo.inc"

#endif