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//===- AlphaJITInfo.h - Alpha impl. 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 Alpha implementation of the TargetJITInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef ALPHA_JITINFO_H
#define ALPHA_JITINFO_H
#include "llvm/Target/TargetJITInfo.h"
#include <map>
namespace llvm {
class TargetMachine;
class AlphaJITInfo : public TargetJITInfo {
protected:
TargetMachine &TM;
//because gpdist are paired and relative to the pc of the first inst,
//we need to have some state
std::map<std::pair<void*, int>, void*> gpdistmap;
public:
explicit AlphaJITInfo(TargetMachine &tm) : TM(tm)
{ useGOT = true; }
virtual StubLayout getStubLayout();
virtual void *emitFunctionStub(const Function* F, void *Fn,
JITCodeEmitter &JCE);
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
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