1 //===- X86JITInfo.h - X86 implementation of the JIT interface --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // 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;
22 class X86JITInfo : public TargetJITInfo {
25 X86JITInfo(X86TargetMachine &tm) : TM(tm) {useGOT = 0;}
27 /// replaceMachineCodeForFunction - Make it so that calling the function
28 /// whose machine code is at OLD turns into a call to NEW, perhaps by
29 /// overwriting OLD with a branch to NEW. This is used for self-modifying
32 virtual void replaceMachineCodeForFunction(void *Old, void *New);
34 /// emitGlobalValueLazyPtr - Use the specified MachineCodeEmitter object to
35 /// emit a lazy pointer which contains the address of the specified GV.
36 virtual void *emitGlobalValueLazyPtr(void *GV, MachineCodeEmitter &MCE);
38 /// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
39 /// small native function that simply calls the function at the specified
41 virtual void *emitFunctionStub(void *Fn, MachineCodeEmitter &MCE);
43 /// getLazyResolverFunction - Expose the lazy resolver to the JIT.
44 virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
46 /// relocate - Before the JIT can run a block of code that has been emitted,
47 /// it must rewrite the code to contain the actual addresses of any
48 /// referenced global symbols.
49 virtual void relocate(void *Function, MachineRelocation *MR,
50 unsigned NumRelocs, unsigned char* GOTBase);