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