IA64ISA.hpp

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//***************************************************************************
//
// File:
//    IA64ISA.h
//
// Purpose:
//    [The purpose of this file]
//
// Description:
//    [The set of functions, macros, etc. defined in the file]
//
//***************************************************************************

#ifndef isa_IA64ISA_hpp
#define isa_IA64ISA_hpp

//************************* System Include Files ****************************

//*************************** User Include Files ****************************

#include <include/gcc-attr.h>
#include <include/uint.h>
#include <include/gnu_bfd.h>
#include <include/gnu_dis-asm.h> // gnu binutils

#include "ISA.hpp"

//*************************** Forward Declarations ***************************

//***************************************************************************
// IA64ISA
//***************************************************************************

// 'IA64ISA': Implements the IA-64 Instruction Set Architecture.

class IA64ISA : public ISA {
public:
  IA64ISA();

  virtual ~IA64ISA();

  // --------------------------------------------------------
  // Instructions:
  // --------------------------------------------------------

  virtual ushort
  getInsnSize(MachInsn* GCC_ATTR_UNUSED mi)
  { return 16; /* Each IA64 VLIW packet is 16 bytes long. */ }

  virtual ushort
  getInsnNumOps(MachInsn *mi);

  virtual InsnDesc
  getInsnDesc(MachInsn* mi, ushort opIndex, ushort sz = 0);

  virtual VMA
  getInsnTargetVMA(MachInsn* mi, VMA pc, ushort opIndex, ushort sz = 0);

  virtual ushort
  getInsnNumDelaySlots(MachInsn* GCC_ATTR_UNUSED mi,
                       ushort GCC_ATTR_UNUSED opIndex,
                       ushort GCC_ATTR_UNUSED sz = 0)
  { return 0; }

  virtual bool
  isParallelWithSuccessor(MachInsn* GCC_ATTR_UNUSED mi1,
                          ushort GCC_ATTR_UNUSED opIndex1,
                          ushort GCC_ATTR_UNUSED sz1,
                          MachInsn* GCC_ATTR_UNUSED mi2,
                          ushort GCC_ATTR_UNUSED opIndex2,
                          ushort GCC_ATTR_UNUSED sz2) const
  { return false; /* FIXME */ }

  virtual VMA
  convertVMAToOpVMA(VMA vma, ushort opIndex) const
  {
    // This is identical to the GNU scheme for now.  Note that the
    // offsets do not actually match the IA64 template [5,41,41,41].
    //BriefAssertion(opIndex <= 2 && "Programming Error");
    return (vma + 6 * opIndex); // 0, 6, 12
  }

  virtual VMA
  convertOpVMAToVMA(VMA opvma, ushort& opIndex) const
  {
    // See above comments
    ushort offset = (opvma & 0xf); // 0, 6, 12
    opIndex = (ushort)(offset / 6);
    return (opvma - offset);
  }

  virtual void
  decode(std::ostream& os, MachInsn* mi, VMA vma, ushort opIndex);

private:
  // Should not be used
  IA64ISA(const IA64ISA& GCC_ATTR_UNUSED x)
  { }
  
  IA64ISA& operator=(const IA64ISA& GCC_ATTR_UNUSED x)
  { return *this; }

protected:
private:
  struct disassemble_info* m_di;
  struct disassemble_info* m_di_dis;
  GNUbu_disdata m_dis_data;
};

//****************************************************************************

#endif /* isa_IA64ISA_hpp */