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 #include "llvm-c/Disassembler.h"
  17 #include <string>
  18 #include "llvm/ADT/OwningPtr.h"
  19
  20 namespace llvm {
  21 class TargetAsmInfo;
  22 class MCContext;
  23 class MCAsmInfo;
  24 class MCDisassembler;
  25 class MCInstPrinter;
  26 class Target;
  27 class TargetMachine;
  28
  29 //
  30 // This is the disassembler context returned by LLVMCreateDisasm().
  31 //
  32 class LLVMDisasmContext {
  33 private:
  34   //
  35   // The passed parameters when the disassembler context is created.
  36   //
  37   // The TripleName for this disassembler.
  38   std::string TripleName;
  39   // The pointer to the caller's block of symbolic information.
  40   void *DisInfo;
  41   // The Triple specific symbolic information type returned by GetOpInfo.
  42   int TagType;
  43   // The function to get the symbolic information for operands.
  44   LLVMOpInfoCallback GetOpInfo;
  45   // The function to look up a symbol name.
  46   LLVMSymbolLookupCallback SymbolLookUp;
  47   //
  48   // The objects created and saved by LLVMCreateDisasm() then used by
  49   // LLVMDisasmInstruction().
  50   //
  51   // The LLVM target corresponding to the disassembler.
  52   // FIXME: using llvm::OwningPtr<const llvm::Target> causes a malloc error
  53   //        when this LLVMDisasmContext is deleted.
  54   const Target *TheTarget;
  55   // The assembly information for the target architecture.
  56   llvm::OwningPtr<const llvm::MCAsmInfo> MAI;
  57   // The target machine instance.
  58   llvm::OwningPtr<llvm::TargetMachine> TM;
  59   // The disassembler for the target architecture.
  60   // FIXME: using llvm::OwningPtr<const llvm::TargetAsmInfo> causes a malloc
  61   //        error when this LLVMDisasmContext is deleted.
  62   const TargetAsmInfo *Tai;
  63   // The assembly context for creating symbols and MCExprs.
  64   llvm::OwningPtr<const llvm::MCContext> Ctx;
  65   // The disassembler for the target architecture.
  66   llvm::OwningPtr<const llvm::MCDisassembler> DisAsm;
  67   // The instruction printer for the target architecture.
  68   llvm::OwningPtr<llvm::MCInstPrinter> IP;
  69
  70 public:
  71   LLVMDisasmContext(std::string tripleName, void *disInfo, int tagType,
  72           LLVMOpInfoCallback getOpInfo,
  73                     LLVMSymbolLookupCallback symbolLookUp,
  74                     const Target *theTarget, const MCAsmInfo *mAI,
  75                     llvm::TargetMachine *tM, const TargetAsmInfo *tai,
  76                     llvm::MCContext *ctx, const MCDisassembler *disAsm,
  77                     MCInstPrinter *iP) : TripleName(tripleName),
  78                     DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
  79                     SymbolLookUp(symbolLookUp), TheTarget(theTarget), Tai(tai) {
  80     TM.reset(tM);
  81     MAI.reset(mAI);
  82     Ctx.reset(ctx);
  83     DisAsm.reset(disAsm);
  84     IP.reset(iP);
  85   }
  86   const MCDisassembler *getDisAsm() const { return DisAsm.get(); }
  87   MCInstPrinter *getIP() { return IP.get(); }
  88 };
  89
  90 } // namespace llvm