lib/Target/X86/X86JITInfo.h

   1 //===- X86JITInfo.h - X86 implementation of the JIT interface  --*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file was developed by the LLVM research group and is distributed under
   6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the X86 implementation of the TargetJITInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef X86JITINFO_H
  15 #define X86JITINFO_H
  16
  17 #include "llvm/Target/TargetJITInfo.h"
  18
  19 namespace llvm {
  20   class X86TargetMachine;
  21   class IntrinsicLowering;
  22
  23   class X86JITInfo : public TargetJITInfo {
  24     X86TargetMachine &TM;
  25   public:
  26     X86JITInfo(X86TargetMachine &tm) : TM(tm) {useGOT = 0;}
  27
  28     /// addPassesToJITCompile - Add passes to the specified pass manager to
  29     /// implement a fast dynamic compiler for this target.  Return true if this
  30     /// is not supported for this target.
  31     ///
  32     virtual void addPassesToJITCompile(FunctionPassManager &PM);
  33
  34     /// replaceMachineCodeForFunction - Make it so that calling the function
  35     /// whose machine code is at OLD turns into a call to NEW, perhaps by
  36     /// overwriting OLD with a branch to NEW.  This is used for self-modifying
  37     /// code.
  38     ///
  39     virtual void replaceMachineCodeForFunction(void *Old, void *New);
  40
  41     /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
  42     /// small native function that simply calls the function at the specified
  43     /// address.
  44     virtual void *emitFunctionStub(void *Fn, MachineCodeEmitter &MCE);
  45
  46     /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
  47     virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
  48
  49     /// relocate - Before the JIT can run a block of code that has been emitted,
  50     /// it must rewrite the code to contain the actual addresses of any
  51     /// referenced global symbols.
  52     virtual void relocate(void *Function, MachineRelocation *MR,
  53                           unsigned NumRelocs, unsigned char* GOTBase);
  54   };
  55 }
  56
  57 #endif