1//===- MipsJITInfo.h - Mips implementation 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 declaration of the MipsJITInfo class. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef MIPSJITINFO_H 15#define MIPSJITINFO_H 16 17#include "MipsMachineFunction.h" 18#include "llvm/CodeGen/MachineConstantPool.h" 19#include "llvm/CodeGen/MachineFunction.h" 20#include "llvm/CodeGen/MachineJumpTableInfo.h" 21#include "llvm/Target/TargetJITInfo.h" 22#include "llvm/ADT/DenseMap.h" 23#include "llvm/ADT/SmallVector.h" 24 25namespace llvm { 26class MipsTargetMachine; 27 28class MipsJITInfo : public TargetJITInfo { 29 30 bool IsPIC; 31 32 public: 33 explicit MipsJITInfo() : 34 IsPIC(false) {} 35 36 /// replaceMachineCodeForFunction - Make it so that calling the function 37 /// whose machine code is at OLD turns into a call to NEW, perhaps by 38 /// overwriting OLD with a branch to NEW. This is used for self-modifying 39 /// code. 40 /// 41 virtual void replaceMachineCodeForFunction(void *Old, void *New); 42 43 // getStubLayout - Returns the size and alignment of the largest call stub 44 // on Mips. 45 virtual StubLayout getStubLayout(); 46 47 /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a 48 /// small native function that simply calls the function at the specified 49 /// address. 50 virtual void *emitFunctionStub(const Function* F, void *Fn, 51 JITCodeEmitter &JCE); 52 53 /// getLazyResolverFunction - Expose the lazy resolver to the JIT. 54 virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn); 55 56 /// relocate - Before the JIT can run a block of code that has been emitted, 57 /// it must rewrite the code to contain the actual addresses of any 58 /// referenced global symbols. 59 virtual void relocate(void *Function, MachineRelocation *MR, 60 unsigned NumRelocs, unsigned char* GOTBase); 61 62 /// Initialize - Initialize internal stage for the function being JITted. 63 void Initialize(const MachineFunction &MF, bool isPIC) { 64 IsPIC = isPIC; 65 } 66 67}; 68} 69 70#endif 71