Mercurial > hg > CbC > CbC_llvm

annotate lib/DebugInfo/DWARF/DWARFDebugMacro.cpp @ 148:63bd29f05246

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merged
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 14 Aug 2019 19:46:37 +0900
parents c2174574ed3a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 //===- DWARFDebugMacro.cpp ------------------------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "llvm/DebugInfo/DWARF/DWARFDebugMacro.h"
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10 #include "llvm/BinaryFormat/Dwarf.h"
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11 #include "llvm/Support/WithColor.h"
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12 #include "llvm/Support/raw_ostream.h"
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13 #include <cstdint>
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14
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15 using namespace llvm;
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16 using namespace dwarf;
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17
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18 void DWARFDebugMacro::dump(raw_ostream &OS) const {
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19 unsigned IndLevel = 0;
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20 for (const Entry &E : Macros) {
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21 // There should not be DW_MACINFO_end_file when IndLevel is Zero. However,
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22 // this check handles the case of corrupted ".debug_macinfo" section.
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23 if (IndLevel > 0)
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24 IndLevel -= (E.Type == DW_MACINFO_end_file);
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25 // Print indentation.
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26 for (unsigned I = 0; I < IndLevel; I++)
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27 OS << " ";
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28 IndLevel += (E.Type == DW_MACINFO_start_file);
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29
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30 WithColor(OS, HighlightColor::Macro).get() << MacinfoString(E.Type);
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31 switch (E.Type) {
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32 default:
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33 // Got a corrupted ".debug_macinfo" section (invalid macinfo type).
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34 break;
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35 case DW_MACINFO_define:
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36 case DW_MACINFO_undef:
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37 OS << " - lineno: " << E.Line;
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38 OS << " macro: " << E.MacroStr;
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39 break;
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40 case DW_MACINFO_start_file:
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41 OS << " - lineno: " << E.Line;
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42 OS << " filenum: " << E.File;
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43 break;
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44 case DW_MACINFO_end_file:
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45 break;
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46 case DW_MACINFO_vendor_ext:
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47 OS << " - constant: " << E.ExtConstant;
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48 OS << " string: " << E.ExtStr;
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49 break;
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50 }
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51 OS << "\n";
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52 }
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53 }
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54
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55 void DWARFDebugMacro::parse(DataExtractor data) {
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56 uint64_t Offset = 0;
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57 while (data.isValidOffset(Offset)) {
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58 // A macro list entry consists of:
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59 Entry E;
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60 // 1. Macinfo type
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61 E.Type = data.getULEB128(&Offset);
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62
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63 if (E.Type == 0) {
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64 // Reached end of ".debug_macinfo" section.
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65 return;
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66 }
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67
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68 switch (E.Type) {
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69 default:
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70 // Got a corrupted ".debug_macinfo" section (invalid macinfo type).
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71 // Push the corrupted entry to the list and halt parsing.
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72 E.Type = DW_MACINFO_invalid;
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73 Macros.push_back(E);
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74 return;
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75 case DW_MACINFO_define:
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76 case DW_MACINFO_undef:
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77 // 2. Source line
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78 E.Line = data.getULEB128(&Offset);
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79 // 3. Macro string
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80 E.MacroStr = data.getCStr(&Offset);
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81 break;
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82 case DW_MACINFO_start_file:
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83 // 2. Source line
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84 E.Line = data.getULEB128(&Offset);
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85 // 3. Source file id
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86 E.File = data.getULEB128(&Offset);
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87 break;
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88 case DW_MACINFO_end_file:
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89 break;
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90 case DW_MACINFO_vendor_ext:
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91 // 2. Vendor extension constant
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92 E.ExtConstant = data.getULEB128(&Offset);
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93 // 3. Vendor extension string
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94 E.ExtStr = data.getCStr(&Offset);
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95 break;
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96 }
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97
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98 Macros.push_back(E);
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99 }
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100 }