lib/Target/Alpha/AlphaJITInfo.h

   1 //===- AlphaJITInfo.h - Alpha impl. of the JIT interface ----*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the Alpha implementation of the TargetJITInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef ALPHA_JITINFO_H
  15 #define ALPHA_JITINFO_H
  16
  17 #include "llvm/Target/TargetJITInfo.h"
  18
  19 namespace llvm {
  20   class TargetMachine;
  21
  22   class AlphaJITInfo : public TargetJITInfo {
  23   protected:
  24     TargetMachine &TM;
  25   public:
  26     explicit AlphaJITInfo(TargetMachine &tm) : TM(tm)
  27     { useGOT = true; }
  28
  29     virtual void *emitFunctionStub(const Function* F, void *Fn,
  30                                    MachineCodeEmitter &MCE);
  31     virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
  32     virtual void relocate(void *Function, MachineRelocation *MR,
  33                           unsigned NumRelocs, unsigned char* GOTBase);
  34
  35     /// replaceMachineCodeForFunction - Make it so that calling the function
  36     /// whose machine code is at OLD turns into a call to NEW, perhaps by
  37     /// overwriting OLD with a branch to NEW.  This is used for self-modifying
  38     /// code.
  39     ///
  40     virtual void replaceMachineCodeForFunction(void *Old, void *New);
  41   private:
  42     static const unsigned GOToffset = 4096;
  43
  44   };
  45 }
  46
  47 #endif