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 25 namespace llvm { 26 class MipsTargetMachine; 27 28 class MipsJITInfo : public TargetJITInfo { 29 30 bool IsPIC; 31 32 public: MipsJITInfo()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. Initialize(const MachineFunction & MF,bool isPIC)63 void Initialize(const MachineFunction &MF, bool isPIC) { 64 IsPIC = isPIC; 65 } 66 67 }; 68 } 69 70 #endif 71