MipsJITInfo.h revision dce4a407a24b04eebc6a376f8e62b41aaa7b071f
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 23namespace llvm { 24class MipsTargetMachine; 25 26class MipsJITInfo : public TargetJITInfo { 27 28 bool IsPIC; 29 bool IsLittleEndian; 30 31 public: 32 explicit MipsJITInfo() : 33 IsPIC(false), IsLittleEndian(true) {} 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 void replaceMachineCodeForFunction(void *Old, void *New) override; 41 42 // getStubLayout - Returns the size and alignment of the largest call stub 43 // on Mips. 44 StubLayout getStubLayout() override; 45 46 /// emitFunctionStub - Use the specified JITCodeEmitter object to emit a 47 /// small native function that simply calls the function at the specified 48 /// address. 49 void *emitFunctionStub(const Function *F, void *Fn, 50 JITCodeEmitter &JCE) override; 51 52 /// getLazyResolverFunction - Expose the lazy resolver to the JIT. 53 LazyResolverFn getLazyResolverFunction(JITCompilerFn) override; 54 55 /// relocate - Before the JIT can run a block of code that has been emitted, 56 /// it must rewrite the code to contain the actual addresses of any 57 /// referenced global symbols. 58 void relocate(void *Function, MachineRelocation *MR, 59 unsigned NumRelocs, unsigned char *GOTBase) override; 60 61 /// Initialize - Initialize internal stage for the function being JITted. 62 void Initialize(const MachineFunction &MF, bool isPIC, 63 bool isLittleEndian) { 64 IsPIC = isPIC; 65 IsLittleEndian = isLittleEndian; 66 } 67 68}; 69} 70 71#endif 72