lib/ExecutionEngine/JIT/JITDwarfEmitter.h

   1 //===------ JITDwarfEmitter.h - Write dwarf tables into memory ------------===//
   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 defines a JITDwarfEmitter object that is used by the JIT to
  11 // write dwarf tables to memory.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_EXECUTION_ENGINE_JIT_DWARFEMITTER_H
  16 #define LLVM_EXECUTION_ENGINE_JIT_DWARFEMITTER_H
  17
  18 namespace llvm {
  19
  20 class Function;
  21 class MachineCodeEmitter;
  22 class MachineFunction;
  23 class MachineModuleInfo;
  24 class MachineMove;
  25 class TargetData;
  26 class TargetMachine;
  27 class TargetRegisterInfo;
  28
  29 class JITDwarfEmitter {
  30   const TargetData* TD;
  31   MachineCodeEmitter* MCE;
  32   const TargetRegisterInfo* RI;
  33   MachineModuleInfo* MMI;
  34   JIT& Jit;
  35   bool needsIndirectEncoding;
  36   bool stackGrowthDirection;
  37
  38   unsigned char* EmitExceptionTable(MachineFunction* MF,
  39                                     unsigned char* StartFunction,
  40                                     unsigned char* EndFunction);
  41
  42   void EmitFrameMoves(intptr_t BaseLabelPtr,
  43                       const std::vector<MachineMove> &Moves);
  44
  45   unsigned char* EmitCommonEHFrame(const Function* Personality);
  46
  47   unsigned char* EmitEHFrame(const Function* Personality,
  48                              unsigned char* StartBufferPtr,
  49                              unsigned char* StartFunction,
  50                              unsigned char* EndFunction,
  51                              unsigned char* ExceptionTable);
  52
  53   unsigned GetExceptionTableSize(MachineFunction* MF);
  54
  55   unsigned GetFrameMovesSize(intptr_t BaseLabelPtr,
  56                              const std::vector<MachineMove> &Moves);
  57
  58   unsigned GetCommonEHFrameSize(const Function* Personality);
  59
  60   unsigned GetEHFrameSize(const Function* Personality,
  61                           unsigned char* StartFunction);
  62
  63 public:
  64
  65   JITDwarfEmitter(JIT& jit);
  66
  67   unsigned char* EmitDwarfTable(MachineFunction& F,
  68                                 MachineCodeEmitter& MCE,
  69                                 unsigned char* StartFunction,
  70                                 unsigned char* EndFunction);
  71
  72
  73   unsigned GetDwarfTableSize(MachineFunction& F,
  74                              MachineCodeEmitter& MCE,
  75                              unsigned char* StartFunction,
  76                              unsigned char* EndFunction);
  77
  78   void setModuleInfo(MachineModuleInfo* Info) {
  79     MMI = Info;
  80   }
  81 };
  82
  83
  84 } // end namespace llvm
  85
  86 #endif // LLVM_EXECUTION_ENGINE_JIT_DWARFEMITTER_H