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C++ DWARFDataExtractor::getCStr方法代码示例

本文整理汇总了C++中DWARFDataExtractor::getCStr方法的典型用法代码示例。如果您正苦于以下问题:C++ DWARFDataExtractor::getCStr方法的具体用法?C++ DWARFDataExtractor::getCStr怎么用?C++ DWARFDataExtractor::getCStr使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在DWARFDataExtractor的用法示例。


在下文中一共展示了DWARFDataExtractor::getCStr方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: extractValue

bool DWARFFormValue::extractValue(const DWARFDataExtractor &Data,
                                  uint32_t *OffsetPtr, DWARFFormParams FP,
                                  const DWARFUnit *CU) {
  U = CU;
  bool Indirect = false;
  bool IsBlock = false;
  Value.data = nullptr;
  // Read the value for the form into value and follow and DW_FORM_indirect
  // instances we run into
  do {
    Indirect = false;
    switch (Form) {
    case DW_FORM_addr:
    case DW_FORM_ref_addr: {
      uint16_t Size =
          (Form == DW_FORM_addr) ? FP.AddrSize : FP.getRefAddrByteSize();
      Value.uval = Data.getRelocatedValue(Size, OffsetPtr, &Value.SectionIndex);
      break;
    }
    case DW_FORM_exprloc:
    case DW_FORM_block:
      Value.uval = Data.getULEB128(OffsetPtr);
      IsBlock = true;
      break;
    case DW_FORM_block1:
      Value.uval = Data.getU8(OffsetPtr);
      IsBlock = true;
      break;
    case DW_FORM_block2:
      Value.uval = Data.getU16(OffsetPtr);
      IsBlock = true;
      break;
    case DW_FORM_block4:
      Value.uval = Data.getU32(OffsetPtr);
      IsBlock = true;
      break;
    case DW_FORM_data1:
    case DW_FORM_ref1:
    case DW_FORM_flag:
    case DW_FORM_strx1:
    case DW_FORM_addrx1:
      Value.uval = Data.getU8(OffsetPtr);
      break;
    case DW_FORM_data2:
    case DW_FORM_ref2:
    case DW_FORM_strx2:
    case DW_FORM_addrx2:
      Value.uval = Data.getU16(OffsetPtr);
      break;
    case DW_FORM_strx3:
      Value.uval = Data.getU24(OffsetPtr);
      break;
    case DW_FORM_data4:
    case DW_FORM_ref4:
    case DW_FORM_ref_sup4:
    case DW_FORM_strx4:
    case DW_FORM_addrx4:
      Value.uval = Data.getRelocatedValue(4, OffsetPtr);
      break;
    case DW_FORM_data8:
    case DW_FORM_ref8:
    case DW_FORM_ref_sup8:
      Value.uval = Data.getU64(OffsetPtr);
      break;
    case DW_FORM_data16:
      // Treat this like a 16-byte block.
      Value.uval = 16;
      IsBlock = true;
      break;
    case DW_FORM_sdata:
      Value.sval = Data.getSLEB128(OffsetPtr);
      break;
    case DW_FORM_udata:
    case DW_FORM_ref_udata:
      Value.uval = Data.getULEB128(OffsetPtr);
      break;
    case DW_FORM_string:
      Value.cstr = Data.getCStr(OffsetPtr);
      break;
    case DW_FORM_indirect:
      Form = static_cast<dwarf::Form>(Data.getULEB128(OffsetPtr));
      Indirect = true;
      break;
    case DW_FORM_strp:
    case DW_FORM_sec_offset:
    case DW_FORM_GNU_ref_alt:
    case DW_FORM_GNU_strp_alt:
    case DW_FORM_line_strp:
    case DW_FORM_strp_sup: {
      Value.uval =
          Data.getRelocatedValue(FP.getDwarfOffsetByteSize(), OffsetPtr);
      break;
    }
    case DW_FORM_flag_present:
      Value.uval = 1;
      break;
    case DW_FORM_ref_sig8:
      Value.uval = Data.getU64(OffsetPtr);
      break;
    case DW_FORM_GNU_addr_index:
//.........这里部分代码省略.........
开发者ID:a565109863,项目名称:src,代码行数:101,代码来源:DWARFFormValue.cpp

示例2: State


//.........这里部分代码省略.........
        // from the size of the operand.
        if (DebugLineData.getAddressSize() == 0)
          DebugLineData.setAddressSize(Len - 1);
        else
          assert(DebugLineData.getAddressSize() == Len - 1);
        State.Row.Address = DebugLineData.getRelocatedAddress(OffsetPtr);
        if (OS)
          *OS << format(" (0x%16.16" PRIx64 ")", State.Row.Address);
        break;

      case DW_LNE_define_file:
        // Takes 4 arguments. The first is a null terminated string containing
        // a source file name. The second is an unsigned LEB128 number
        // representing the directory index of the directory in which the file
        // was found. The third is an unsigned LEB128 number representing the
        // time of last modification of the file. The fourth is an unsigned
        // LEB128 number representing the length in bytes of the file. The time
        // and length fields may contain LEB128(0) if the information is not
        // available.
        //
        // The directory index represents an entry in the include_directories
        // section of the statement program prologue. The index is LEB128(0)
        // if the file was found in the current directory of the compilation,
        // LEB128(1) if it was found in the first directory in the
        // include_directories section, and so on. The directory index is
        // ignored for file names that represent full path names.
        //
        // The files are numbered, starting at 1, in the order in which they
        // appear; the names in the prologue come before names defined by
        // the DW_LNE_define_file instruction. These numbers are used in the
        // the file register of the state machine.
        {
          FileNameEntry FileEntry;
          FileEntry.Name = DebugLineData.getCStr(OffsetPtr);
          FileEntry.DirIdx = DebugLineData.getULEB128(OffsetPtr);
          FileEntry.ModTime = DebugLineData.getULEB128(OffsetPtr);
          FileEntry.Length = DebugLineData.getULEB128(OffsetPtr);
          Prologue.FileNames.push_back(FileEntry);
          if (OS)
            *OS << " (" << FileEntry.Name.str()
                << ", dir=" << FileEntry.DirIdx << ", mod_time="
                << format("(0x%16.16" PRIx64 ")", FileEntry.ModTime)
                << ", length=" << FileEntry.Length << ")";
        }
        break;

      case DW_LNE_set_discriminator:
        State.Row.Discriminator = DebugLineData.getULEB128(OffsetPtr);
        if (OS)
          *OS << " (" << State.Row.Discriminator << ")";
        break;

      default:
        if (OS)
          *OS << format("Unrecognized extended op 0x%02.02" PRIx8, SubOpcode)
              << format(" length %" PRIx64, Len);
        // Len doesn't include the zero opcode byte or the length itself, but
        // it does include the sub_opcode, so we have to adjust for that.
        (*OffsetPtr) += Len - 1;
        break;
      }
      // Make sure the stated and parsed lengths are the same.
      // Otherwise we have an unparseable line-number program.
      if (*OffsetPtr - ExtOffset != Len) {
        fprintf(stderr, "Unexpected line op length at offset 0x%8.8" PRIx32
                " expected 0x%2.2" PRIx64 " found 0x%2.2" PRIx32 "\n",
开发者ID:BNieuwenhuizen,项目名称:llvm,代码行数:67,代码来源:DWARFDebugLine.cpp


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