lib/Target/Alpha/AlphaJITInfo.h

//===- AlphaJITInfo.h - Alpha impl. of the JIT interface ----*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the Alpha implementation of the TargetJITInfo class.
//
//===----------------------------------------------------------------------===//

#ifndef ALPHA_JITINFO_H
#define ALPHA_JITINFO_H

#include "llvm/Target/TargetJITInfo.h"
#include "llvm/GlobalValue.h"
#include <string>
#include <map>

namespace llvm {
  class TargetMachine;

  class AlphaJITInfo : public TargetJITInfo {
  protected:
    TargetMachine &TM;
  public:
    AlphaJITInfo(TargetMachine &tm) : TM(tm)
    { useGOT = true; }

    /// addPassesToJITCompile - Add passes to the specified pass manager to
    /// implement a fast dynamic compiler for this target.  Return true if this
    /// is not supported for this target.
    ///
    virtual void addPassesToJITCompile(FunctionPassManager &PM);

    virtual void *emitFunctionStub(void *Fn, MachineCodeEmitter &MCE);
    virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
    virtual void relocate(void *Function, MachineRelocation *MR,
                          unsigned NumRelocs, unsigned char* GOTBase);

    /// 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);

  private:
    static const unsigned GOToffset = 4096;

  };
}

#endif