C++ (Cpp) MCDisassembler::setSymbolizerの例

コード例 #1

ファイル: Disassembler.cpp プロジェクト: ChiahungTai/llvm

// LLVMCreateDisasm() creates a disassembler for the TripleName.  Symbolic
// disassembly is supported by passing a block of information in the DisInfo
// parameter and specifying the TagType and callback functions as described in
// the header llvm-c/Disassembler.h .  The pointer to the block and the 
// functions can all be passed as NULL.  If successful, this returns a
// disassembler context.  If not, it returns NULL.
//
LLVMDisasmContextRef LLVMCreateDisasmCPU(const char *Triple, const char *CPU,
                                         void *DisInfo, int TagType,
                                         LLVMOpInfoCallback GetOpInfo,
                                         LLVMSymbolLookupCallback SymbolLookUp){
  // Get the target.
  std::string Error;
  const Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error);
  if (!TheTarget)
    return 0;

  const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(Triple);
  if (!MRI)
    return 0;

  // Get the assembler info needed to setup the MCContext.
  const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(*MRI, Triple);
  if (!MAI)
    return 0;

  const MCInstrInfo *MII = TheTarget->createMCInstrInfo();
  if (!MII)
    return 0;

  // Package up features to be passed to target/subtarget
  std::string FeaturesStr;

  const MCSubtargetInfo *STI = TheTarget->createMCSubtargetInfo(Triple, CPU,
                                                                FeaturesStr);
  if (!STI)
    return 0;

  // Set up the MCContext for creating symbols and MCExpr's.
  MCContext *Ctx = new MCContext(MAI, MRI, 0);
  if (!Ctx)
    return 0;

  // Set up disassembler.
  MCDisassembler *DisAsm = TheTarget->createMCDisassembler(*STI);
  if (!DisAsm)
    return 0;

  OwningPtr<MCRelocationInfo> RelInfo(
    TheTarget->createMCRelocationInfo(Triple, *Ctx));
  if (!RelInfo)
    return 0;

  OwningPtr<MCSymbolizer> Symbolizer(
    TheTarget->createMCSymbolizer(Triple, GetOpInfo, SymbolLookUp, DisInfo,
                                  Ctx, RelInfo.take()));
  DisAsm->setSymbolizer(Symbolizer);
  DisAsm->setupForSymbolicDisassembly(GetOpInfo, SymbolLookUp, DisInfo,
                                      Ctx, RelInfo);
  // Set up the instruction printer.
  int AsmPrinterVariant = MAI->getAssemblerDialect();
  MCInstPrinter *IP = TheTarget->createMCInstPrinter(AsmPrinterVariant,
                                                     *MAI, *MII, *MRI, *STI);
  if (!IP)
    return 0;

  LLVMDisasmContext *DC = new LLVMDisasmContext(Triple, DisInfo, TagType,
                                                GetOpInfo, SymbolLookUp,
                                                TheTarget, MAI, MRI,
                                                STI, MII, Ctx, DisAsm, IP);
  if (!DC)
    return 0;

  return DC;
}

コード例 #2

ファイル: Disassembler.cpp プロジェクト: JosephTremoulet/llvm

// LLVMCreateDisasm() creates a disassembler for the TripleName.  Symbolic
// disassembly is supported by passing a block of information in the DisInfo
// parameter and specifying the TagType and callback functions as described in
// the header llvm-c/Disassembler.h .  The pointer to the block and the 
// functions can all be passed as NULL.  If successful, this returns a
// disassembler context.  If not, it returns NULL.
//
LLVMDisasmContextRef
LLVMCreateDisasmCPUFeatures(const char *TT, const char *CPU,
                            const char *Features, void *DisInfo, int TagType,
                            LLVMOpInfoCallback GetOpInfo,
                            LLVMSymbolLookupCallback SymbolLookUp) {
  // Get the target.
  std::string Error;
  const Target *TheTarget = TargetRegistry::lookupTarget(TT, Error);
  if (!TheTarget)
    return nullptr;

  const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(TT);
  if (!MRI)
    return nullptr;

  // Get the assembler info needed to setup the MCContext.
  const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(*MRI, TT);
  if (!MAI)
    return nullptr;

  const MCInstrInfo *MII = TheTarget->createMCInstrInfo();
  if (!MII)
    return nullptr;

  const MCSubtargetInfo *STI =
      TheTarget->createMCSubtargetInfo(TT, CPU, Features);
  if (!STI)
    return nullptr;

  // Set up the MCContext for creating symbols and MCExpr's.
  MCContext *Ctx = new MCContext(MAI, MRI, nullptr);
  if (!Ctx)
    return nullptr;

  // Set up disassembler.
  MCDisassembler *DisAsm = TheTarget->createMCDisassembler(*STI, *Ctx);
  if (!DisAsm)
    return nullptr;

  std::unique_ptr<MCRelocationInfo> RelInfo(
      TheTarget->createMCRelocationInfo(TT, *Ctx));
  if (!RelInfo)
    return nullptr;

  std::unique_ptr<MCSymbolizer> Symbolizer(TheTarget->createMCSymbolizer(
      TT, GetOpInfo, SymbolLookUp, DisInfo, Ctx, std::move(RelInfo)));
  DisAsm->setSymbolizer(std::move(Symbolizer));

  // Set up the instruction printer.
  int AsmPrinterVariant = MAI->getAssemblerDialect();
  MCInstPrinter *IP = TheTarget->createMCInstPrinter(
      Triple(TT), AsmPrinterVariant, *MAI, *MII, *MRI);
  if (!IP)
    return nullptr;

  LLVMDisasmContext *DC =
      new LLVMDisasmContext(TT, DisInfo, TagType, GetOpInfo, SymbolLookUp,
                            TheTarget, MAI, MRI, STI, MII, Ctx, DisAsm, IP);
  if (!DC)
    return nullptr;

  DC->setCPU(CPU);
  return DC;
}