src/llvm/lib/MC/MCDisassembler/Disassembler.h

   1 //===------------- Disassembler.h - LLVM Disassembler -----------*- 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 defines the interface for the Disassembly library's disassembler
  11 // context.  The disassembler is responsible for producing strings for
  12 // individual instructions according to a given architecture and disassembly
  13 // syntax.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #ifndef LLVM_MC_DISASSEMBLER_H
  18 #define LLVM_MC_DISASSEMBLER_H
  19
  20 #include "llvm-c/Disassembler.h"
  21 #include "llvm/ADT/OwningPtr.h"
  22 #include "llvm/ADT/SmallString.h"
  23 #include "llvm/Support/raw_ostream.h"
  24 #include <string>
  25
  26 namespace llvm {
  27 class MCContext;
  28 class MCAsmInfo;
  29 class MCDisassembler;
  30 class MCInstPrinter;
  31 class MCInstrInfo;
  32 class MCRegisterInfo;
  33 class MCSubtargetInfo;
  34 class Target;
  35
  36 //
  37 // This is the disassembler context returned by LLVMCreateDisasm().
  38 //
  39 class LLVMDisasmContext {
  40 private:
  41   //
  42   // The passed parameters when the disassembler context is created.
  43   //
  44   // The TripleName for this disassembler.
  45   std::string TripleName;
  46   // The pointer to the caller's block of symbolic information.
  47   void *DisInfo;
  48   // The Triple specific symbolic information type returned by GetOpInfo.
  49   int TagType;
  50   // The function to get the symbolic information for operands.
  51   LLVMOpInfoCallback GetOpInfo;
  52   // The function to look up a symbol name.
  53   LLVMSymbolLookupCallback SymbolLookUp;
  54   //
  55   // The objects created and saved by LLVMCreateDisasm() then used by
  56   // LLVMDisasmInstruction().
  57   //
  58   // The LLVM target corresponding to the disassembler.
  59   // FIXME: using llvm::OwningPtr<const llvm::Target> causes a malloc error
  60   //        when this LLVMDisasmContext is deleted.
  61   const Target *TheTarget;
  62   // The assembly information for the target architecture.
  63   llvm::OwningPtr<const llvm::MCAsmInfo> MAI;
  64   // The register information for the target architecture.
  65   llvm::OwningPtr<const llvm::MCRegisterInfo> MRI;
  66   // The subtarget information for the target architecture.
  67   llvm::OwningPtr<const llvm::MCSubtargetInfo> MSI;
  68   // The instruction information for the target architecture.
  69   llvm::OwningPtr<const llvm::MCInstrInfo> MII;
  70   // The assembly context for creating symbols and MCExprs.
  71   llvm::OwningPtr<const llvm::MCContext> Ctx;
  72   // The disassembler for the target architecture.
  73   llvm::OwningPtr<const llvm::MCDisassembler> DisAsm;
  74   // The instruction printer for the target architecture.
  75   llvm::OwningPtr<llvm::MCInstPrinter> IP;
  76
  77 public:
  78   // Comment stream and backing vector.
  79   SmallString<128> CommentsToEmit;
  80   raw_svector_ostream CommentStream;
  81
  82   LLVMDisasmContext(std::string tripleName, void *disInfo, int tagType,
  83                     LLVMOpInfoCallback getOpInfo,
  84                     LLVMSymbolLookupCallback symbolLookUp,
  85                     const Target *theTarget, const MCAsmInfo *mAI,
  86                     const MCRegisterInfo *mRI,
  87                     const MCSubtargetInfo *mSI,
  88                     const MCInstrInfo *mII,
  89                     llvm::MCContext *ctx, const MCDisassembler *disAsm,
  90                     MCInstPrinter *iP) : TripleName(tripleName),
  91                     DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
  92                     SymbolLookUp(symbolLookUp), TheTarget(theTarget),
  93                     CommentStream(CommentsToEmit) {
  94     MAI.reset(mAI);
  95     MRI.reset(mRI);
  96     MSI.reset(mSI);
  97     MII.reset(mII);
  98     Ctx.reset(ctx);
  99     DisAsm.reset(disAsm);
 100     IP.reset(iP);
 101   }
 102   const std::string &getTripleName() const { return TripleName; }
 103   void *getDisInfo() const { return DisInfo; }
 104   int getTagType() const { return TagType; }
 105   LLVMOpInfoCallback getGetOpInfo() const { return GetOpInfo; }
 106   LLVMSymbolLookupCallback getSymbolLookupCallback() const {
 107     return SymbolLookUp;
 108   }
 109   const Target *getTarget() const { return TheTarget; }
 110   const MCDisassembler *getDisAsm() const { return DisAsm.get(); }
 111   const MCAsmInfo *getAsmInfo() const { return MAI.get(); }
 112   const MCInstrInfo *getInstrInfo() const { return MII.get(); }
 113   const MCRegisterInfo *getRegisterInfo() const { return MRI.get(); }
 114   const MCSubtargetInfo *getSubtargetInfo() const { return MSI.get(); }
 115   MCInstPrinter *getIP() { return IP.get(); }
 116   void setIP(MCInstPrinter *NewIP) { IP.reset(NewIP); }
 117 };
 118
 119 } // namespace llvm
 120
 121 #endif