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 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 virtual void replaceMachineCodeForFunction(void *Old, void *New); 41 42 // getStubLayout - Returns the size and alignment of the largest call stub 43 // on Mips. 44 virtual StubLayout getStubLayout(); 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 virtual void *emitFunctionStub(const Function *F, void *Fn, 50 JITCodeEmitter &JCE); 51 52 /// getLazyResolverFunction - Expose the lazy resolver to the JIT. 53 virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn); 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 virtual void relocate(void *Function, MachineRelocation *MR, 59 unsigned NumRelocs, unsigned char *GOTBase); 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
