lib/Target/Sparc/SparcJITInfo.h

//==- SparcJITInfo.h - Sparc Implementation of the JIT Interface -*- C++ -*-==//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the SparcJITInfo class.
//
//===----------------------------------------------------------------------===//

#ifndef SPARCJITINFO_H
#define SPARCJITINFO_H

#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/Target/TargetJITInfo.h"

namespace llvm {
class SparcTargetMachine;

class SparcJITInfo : public TargetJITInfo {

  bool IsPIC;

  public:
  explicit SparcJITInfo()
    :  IsPIC(false) {}

  /// replaceMachineCodeForFunction - Make it so that calling the function
  /// whose machine code is at OLD turns into a call to NEW, perhaps by
  /// overwriting OLD with a branch to NEW.  This is used for self-modifying
  /// code.
  ///
  virtual void replaceMachineCodeForFunction(void *Old, void *New);

  // getStubLayout - Returns the size and alignment of the largest call stub
  // on Sparc.
  virtual StubLayout getStubLayout();


  /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a
  /// small native function that simply calls the function at the specified
  /// address.
  virtual void *emitFunctionStub(const Function *F, void *Fn,
                                 JITCodeEmitter &JCE);

  /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
  virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);

  /// relocate - Before the JIT can run a block of code that has been emitted,
  /// it must rewrite the code to contain the actual addresses of any
  /// referenced global symbols.
  virtual void relocate(void *Function, MachineRelocation *MR,
                        unsigned NumRelocs, unsigned char *GOTBase);

  /// Initialize - Initialize internal stage for the function being JITted.
  void Initialize(const MachineFunction &MF, bool isPIC) {
    IsPIC = isPIC;
  }

};
}

#endif