1 //===- X86JITInfo.h - X86 implementation of the JIT interface --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
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.
8 //===----------------------------------------------------------------------===//
10 // This file contains the X86 implementation of the TargetJITInfo class.
12 //===----------------------------------------------------------------------===//
17 #include "llvm/Target/TargetJITInfo.h"
20 class X86TargetMachine;
21 class IntrinsicLowering;
23 class X86JITInfo : public TargetJITInfo {
26 X86JITInfo(X86TargetMachine &tm) : TM(tm) {useGOT = 0;}
28 /// replaceMachineCodeForFunction - Make it so that calling the function
29 /// whose machine code is at OLD turns into a call to NEW, perhaps by
30 /// overwriting OLD with a branch to NEW. This is used for self-modifying
33 virtual void replaceMachineCodeForFunction(void *Old, void *New);
35 /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
36 /// small native function that simply calls the function at the specified
38 virtual void *emitFunctionStub(void *Fn, MachineCodeEmitter &MCE);
40 /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
41 virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
43 /// relocate - Before the JIT can run a block of code that has been emitted,
44 /// it must rewrite the code to contain the actual addresses of any
45 /// referenced global symbols.
46 virtual void relocate(void *Function, MachineRelocation *MR,
47 unsigned NumRelocs, unsigned char* GOTBase);