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annotate lib/DebugInfo/DWARFDebugArangeSet.h @ 48:4b59af982ef3

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create return function for continuation with the environment automatically, but it can return only int value and it's name is not unique now
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sun, 12 Jan 2014 19:15:16 +0900
parents 95c75e76d11b
children 54457678186b
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1 //===-- DWARFDebugArangeSet.h -----------------------------------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
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11 #define LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
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12
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13 #include "llvm/Support/DataExtractor.h"
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14 #include <vector>
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15
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16 namespace llvm {
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17
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18 class raw_ostream;
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19
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20 class DWARFDebugArangeSet {
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21 public:
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22 struct Header {
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23 // The total length of the entries for that set, not including the length
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24 // field itself.
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25 uint32_t Length;
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26 // The offset from the beginning of the .debug_info section of the
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27 // compilation unit entry referenced by the table.
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28 uint32_t CuOffset;
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29 // The DWARF version number.
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30 uint16_t Version;
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31 // The size in bytes of an address on the target architecture. For segmented
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32 // addressing, this is the size of the offset portion of the address.
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33 uint8_t AddrSize;
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34 // The size in bytes of a segment descriptor on the target architecture.
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35 // If the target system uses a flat address space, this value is 0.
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36 uint8_t SegSize;
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37 };
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38
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39 struct Descriptor {
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40 uint64_t Address;
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41 uint64_t Length;
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42 uint64_t getEndAddress() const { return Address + Length; }
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43 };
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44
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45 private:
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46 typedef std::vector<Descriptor> DescriptorColl;
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47 typedef DescriptorColl::const_iterator DescriptorConstIter;
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48
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49 uint32_t Offset;
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50 Header HeaderData;
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51 DescriptorColl ArangeDescriptors;
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52
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53 public:
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54 DWARFDebugArangeSet() { clear(); }
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55 void clear();
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56 bool extract(DataExtractor data, uint32_t *offset_ptr);
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57 void dump(raw_ostream &OS) const;
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58
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59 uint32_t getCompileUnitDIEOffset() const { return HeaderData.CuOffset; }
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60 uint32_t getNumDescriptors() const { return ArangeDescriptors.size(); }
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61 const Descriptor *getDescriptor(uint32_t i) const {
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62 if (i < ArangeDescriptors.size())
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63 return &ArangeDescriptors[i];
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64 return NULL;
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65 }
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66 };
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67
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68 }
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69
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70 #endif