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 <string>
  22 #include "llvm/ADT/OwningPtr.h"
  23
  24 namespace llvm {
  25 class TargetAsmInfo;
  26 class MCContext;
  27 class MCAsmInfo;
  28 class MCDisassembler;
  29 class MCInstPrinter;
  30 class Target;
  31 class TargetMachine;
  32
  33 //
  34 // This is the disassembler context returned by LLVMCreateDisasm().
  35 //
  36 class LLVMDisasmContext {
  37 private:
  38   //
  39   // The passed parameters when the disassembler context is created.
  40   //
  41   // The TripleName for this disassembler.
  42   std::string TripleName;
  43   // The pointer to the caller's block of symbolic information.
  44   void *DisInfo;
  45   // The Triple specific symbolic information type returned by GetOpInfo.
  46   int TagType;
  47   // The function to get the symbolic information for operands.
  48   LLVMOpInfoCallback GetOpInfo;
  49   // The function to look up a symbol name.
  50   LLVMSymbolLookupCallback SymbolLookUp;
  51   //
  52   // The objects created and saved by LLVMCreateDisasm() then used by
  53   // LLVMDisasmInstruction().
  54   //
  55   // The LLVM target corresponding to the disassembler.
  56   // FIXME: using llvm::OwningPtr<const llvm::Target> causes a malloc error
  57   //        when this LLVMDisasmContext is deleted.
  58   const Target *TheTarget;
  59   // The assembly information for the target architecture.
  60   llvm::OwningPtr<const llvm::MCAsmInfo> MAI;
  61   // The target machine instance.
  62   llvm::OwningPtr<llvm::TargetMachine> TM;
  63   // The disassembler for the target architecture.
  64   // FIXME: using llvm::OwningPtr<const llvm::TargetAsmInfo> causes a malloc
  65   //        error when this LLVMDisasmContext is deleted.
  66   const TargetAsmInfo *Tai;
  67   // The assembly context for creating symbols and MCExprs.
  68   llvm::OwningPtr<const llvm::MCContext> Ctx;
  69   // The disassembler for the target architecture.
  70   llvm::OwningPtr<const llvm::MCDisassembler> DisAsm;
  71   // The instruction printer for the target architecture.
  72   llvm::OwningPtr<llvm::MCInstPrinter> IP;
  73
  74 public:
  75   LLVMDisasmContext(std::string tripleName, void *disInfo, int tagType,
  76                     LLVMOpInfoCallback getOpInfo,
  77                     LLVMSymbolLookupCallback symbolLookUp,
  78                     const Target *theTarget, const MCAsmInfo *mAI,
  79                     llvm::TargetMachine *tM, const TargetAsmInfo *tai,
  80                     llvm::MCContext *ctx, const MCDisassembler *disAsm,
  81                     MCInstPrinter *iP) : TripleName(tripleName),
  82                     DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
  83                     SymbolLookUp(symbolLookUp), TheTarget(theTarget), Tai(tai) {
  84     TM.reset(tM);
  85     MAI.reset(mAI);
  86     Ctx.reset(ctx);
  87     DisAsm.reset(disAsm);
  88     IP.reset(iP);
  89   }
  90   const MCDisassembler *getDisAsm() const { return DisAsm.get(); }
  91   MCInstPrinter *getIP() { return IP.get(); }
  92 };
  93
  94 } // namespace llvm
  95
  96 #endif