LLVM  9.0.0svn
DWARFUnit.h
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1 //===- DWARFUnit.h ----------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_DEBUGINFO_DWARF_DWARFUNIT_H
10 #define LLVM_DEBUGINFO_DWARF_DWARFUNIT_H
11 
12 #include "llvm/ADT/Optional.h"
13 #include "llvm/ADT/STLExtras.h"
14 #include "llvm/ADT/SmallVector.h"
15 #include "llvm/ADT/StringRef.h"
27 #include <algorithm>
28 #include <cassert>
29 #include <cstddef>
30 #include <cstdint>
31 #include <map>
32 #include <memory>
33 #include <utility>
34 #include <vector>
35 
36 namespace llvm {
37 
38 class DWARFAbbreviationDeclarationSet;
39 class DWARFContext;
40 class DWARFDebugAbbrev;
41 class DWARFUnit;
42 
43 /// Base class describing the header of any kind of "unit." Some information
44 /// is specific to certain unit types. We separate this class out so we can
45 /// parse the header before deciding what specific kind of unit to construct.
47  // Offset within section.
48  uint32_t Offset = 0;
49  // Version, address size, and DWARF format.
50  dwarf::FormParams FormParams;
51  uint32_t Length = 0;
52  uint64_t AbbrOffset = 0;
53 
54  // For DWO units only.
55  const DWARFUnitIndex::Entry *IndexEntry = nullptr;
56 
57  // For type units only.
58  uint64_t TypeHash = 0;
59  uint32_t TypeOffset = 0;
60 
61  // For v5 split or skeleton compile units only.
62  Optional<uint64_t> DWOId;
63 
64  // Unit type as parsed, or derived from the section kind.
65  uint8_t UnitType = 0;
66 
67  // Size as parsed. uint8_t for compactness.
68  uint8_t Size = 0;
69 
70 public:
71  /// Parse a unit header from \p debug_info starting at \p offset_ptr.
72  bool extract(DWARFContext &Context, const DWARFDataExtractor &debug_info,
74  const DWARFUnitIndex *Index = nullptr,
75  const DWARFUnitIndex::Entry *Entry = nullptr);
76  uint32_t getOffset() const { return Offset; }
77  const dwarf::FormParams &getFormParams() const { return FormParams; }
78  uint16_t getVersion() const { return FormParams.Version; }
79  dwarf::DwarfFormat getFormat() const { return FormParams.Format; }
80  uint8_t getAddressByteSize() const { return FormParams.AddrSize; }
81  uint8_t getRefAddrByteSize() const { return FormParams.getRefAddrByteSize(); }
82  uint8_t getDwarfOffsetByteSize() const {
83  return FormParams.getDwarfOffsetByteSize();
84  }
85  uint32_t getLength() const { return Length; }
86  uint64_t getAbbrOffset() const { return AbbrOffset; }
87  Optional<uint64_t> getDWOId() const { return DWOId; }
88  void setDWOId(uint64_t Id) {
89  assert((!DWOId || *DWOId == Id) && "setting DWOId to a different value");
90  DWOId = Id;
91  }
92  const DWARFUnitIndex::Entry *getIndexEntry() const { return IndexEntry; }
93  uint64_t getTypeHash() const { return TypeHash; }
94  uint32_t getTypeOffset() const { return TypeOffset; }
95  uint8_t getUnitType() const { return UnitType; }
96  bool isTypeUnit() const {
97  return UnitType == dwarf::DW_UT_type || UnitType == dwarf::DW_UT_split_type;
98  }
99  uint8_t getSize() const { return Size; }
100  // FIXME: Support DWARF64.
101  uint32_t getNextUnitOffset() const { return Offset + Length + 4; }
102 };
103 
106 
107 /// Describe a collection of units. Intended to hold all units either from
108 /// .debug_info and .debug_types, or from .debug_info.dwo and .debug_types.dwo.
109 class DWARFUnitVector final : public SmallVector<std::unique_ptr<DWARFUnit>, 1> {
110  std::function<std::unique_ptr<DWARFUnit>(uint32_t, DWARFSectionKind,
111  const DWARFSection *,
112  const DWARFUnitIndex::Entry *)>
113  Parser;
114  int NumInfoUnits = -1;
115 
116 public:
118  using iterator = typename UnitVector::iterator;
120 
121  DWARFUnit *getUnitForOffset(uint32_t Offset) const;
122  DWARFUnit *getUnitForIndexEntry(const DWARFUnitIndex::Entry &E);
123 
124  /// Read units from a .debug_info or .debug_types section. Calls made
125  /// before finishedInfoUnits() are assumed to be for .debug_info sections,
126  /// calls after finishedInfoUnits() are for .debug_types sections. Caller
127  /// must not mix calls to addUnitsForSection and addUnitsForDWOSection.
128  void addUnitsForSection(DWARFContext &C, const DWARFSection &Section,
129  DWARFSectionKind SectionKind);
130  /// Read units from a .debug_info.dwo or .debug_types.dwo section. Calls
131  /// made before finishedInfoUnits() are assumed to be for .debug_info.dwo
132  /// sections, calls after finishedInfoUnits() are for .debug_types.dwo
133  /// sections. Caller must not mix calls to addUnitsForSection and
134  /// addUnitsForDWOSection.
135  void addUnitsForDWOSection(DWARFContext &C, const DWARFSection &DWOSection,
136  DWARFSectionKind SectionKind, bool Lazy = false);
137 
138  /// Add an existing DWARFUnit to this UnitVector. This is used by the DWARF
139  /// verifier to process unit separately.
140  DWARFUnit *addUnit(std::unique_ptr<DWARFUnit> Unit);
141 
142  /// Returns number of all units held by this instance.
143  unsigned getNumUnits() const { return size(); }
144  /// Returns number of units from all .debug_info[.dwo] sections.
145  unsigned getNumInfoUnits() const {
146  return NumInfoUnits == -1 ? size() : NumInfoUnits;
147  }
148  /// Returns number of units from all .debug_types[.dwo] sections.
149  unsigned getNumTypesUnits() const { return size() - NumInfoUnits; }
150  /// Indicate that parsing .debug_info[.dwo] is done, and remaining units
151  /// will be from .debug_types[.dwo].
152  void finishedInfoUnits() { NumInfoUnits = size(); }
153 
154 private:
155  void addUnitsImpl(DWARFContext &Context, const DWARFObject &Obj,
156  const DWARFSection &Section, const DWARFDebugAbbrev *DA,
157  const DWARFSection *RS, const DWARFSection *LocSection,
158  StringRef SS, const DWARFSection &SOS,
159  const DWARFSection *AOS, const DWARFSection &LS, bool LE,
160  bool IsDWO, bool Lazy, DWARFSectionKind SectionKind);
161 };
162 
163 /// Represents base address of the CU.
164 /// Represents a unit's contribution to the string offsets table.
166  uint64_t Base = 0;
167  /// The contribution size not including the header.
168  uint64_t Size = 0;
169  /// Format and version.
171 
172  StrOffsetsContributionDescriptor(uint64_t Base, uint64_t Size,
174  : Base(Base), Size(Size), FormParams({Version, 0, Format}) {}
175 
176  uint8_t getVersion() const { return FormParams.Version; }
177  dwarf::DwarfFormat getFormat() const { return FormParams.Format; }
178  uint8_t getDwarfOffsetByteSize() const {
179  return FormParams.getDwarfOffsetByteSize();
180  }
181  /// Determine whether a contribution to the string offsets table is
182  /// consistent with the relevant section size and that its length is
183  /// a multiple of the size of one of its entries.
185  validateContributionSize(DWARFDataExtractor &DA);
186 };
187 
188 class DWARFUnit {
190  /// Section containing this DWARFUnit.
191  const DWARFSection &InfoSection;
192 
193  DWARFUnitHeader Header;
194  const DWARFDebugAbbrev *Abbrev;
195  const DWARFSection *RangeSection;
196  uint32_t RangeSectionBase;
197  /// We either keep track of the location list section or its data, depending
198  /// on whether we are handling a split DWARF section or not.
199  union {
202  };
203  const DWARFSection &LineSection;
204  StringRef StringSection;
205  const DWARFSection &StringOffsetSection;
206  const DWARFSection *AddrOffsetSection;
207  uint32_t AddrOffsetSectionBase = 0;
208  bool isLittleEndian;
209  bool IsDWO;
210  const DWARFUnitVector &UnitVector;
211 
212  /// Start, length, and DWARF format of the unit's contribution to the string
213  /// offsets table (DWARF v5).
214  Optional<StrOffsetsContributionDescriptor> StringOffsetsTableContribution;
215 
216  /// A table of range lists (DWARF v5 and later).
218 
219  mutable const DWARFAbbreviationDeclarationSet *Abbrevs;
221  /// The compile unit debug information entry items.
222  std::vector<DWARFDebugInfoEntry> DieArray;
223 
224  /// Map from range's start address to end address and corresponding DIE.
225  /// IntervalMap does not support range removal, as a result, we use the
226  /// std::map::upper_bound for address range lookup.
227  std::map<uint64_t, std::pair<uint64_t, DWARFDie>> AddrDieMap;
228 
229  using die_iterator_range =
231 
232  std::shared_ptr<DWARFUnit> DWO;
233 
234  uint32_t getDIEIndex(const DWARFDebugInfoEntry *Die) {
235  auto First = DieArray.data();
236  assert(Die >= First && Die < First + DieArray.size());
237  return Die - First;
238  }
239 
240 protected:
241  const DWARFUnitHeader &getHeader() const { return Header; }
242 
243  /// Size in bytes of the parsed unit header.
244  uint32_t getHeaderSize() const { return Header.getSize(); }
245 
246  /// Find the unit's contribution to the string offsets table and determine its
247  /// length and form. The given offset is expected to be derived from the unit
248  /// DIE's DW_AT_str_offsets_base attribute.
250  determineStringOffsetsTableContribution(DWARFDataExtractor &DA);
251 
252  /// Find the unit's contribution to the string offsets table and determine its
253  /// length and form. The given offset is expected to be 0 in a dwo file or,
254  /// in a dwp file, the start of the unit's contribution to the string offsets
255  /// table section (as determined by the index table).
257  determineStringOffsetsTableContributionDWO(DWARFDataExtractor &DA);
258 
259 public:
260  DWARFUnit(DWARFContext &Context, const DWARFSection &Section,
261  const DWARFUnitHeader &Header, const DWARFDebugAbbrev *DA,
262  const DWARFSection *RS, const DWARFSection *LocSection,
263  StringRef SS, const DWARFSection &SOS, const DWARFSection *AOS,
264  const DWARFSection &LS, bool LE, bool IsDWO,
265  const DWARFUnitVector &UnitVector);
266 
267  virtual ~DWARFUnit();
268 
269  bool isDWOUnit() const { return IsDWO; }
270  DWARFContext& getContext() const { return Context; }
271  const DWARFSection &getInfoSection() const { return InfoSection; }
272  const DWARFSection *getLocSection() const { return LocSection; }
273  StringRef getLocSectionData() const { return LocSectionData; }
274  uint32_t getOffset() const { return Header.getOffset(); }
276  return Header.getFormParams();
277  }
278  uint16_t getVersion() const { return Header.getVersion(); }
279  uint8_t getAddressByteSize() const { return Header.getAddressByteSize(); }
280  uint8_t getRefAddrByteSize() const { return Header.getRefAddrByteSize(); }
281  uint8_t getDwarfOffsetByteSize() const {
282  return Header.getDwarfOffsetByteSize();
283  }
284  uint32_t getLength() const { return Header.getLength(); }
285  uint8_t getUnitType() const { return Header.getUnitType(); }
286  bool isTypeUnit() const { return Header.isTypeUnit(); }
287  uint32_t getNextUnitOffset() const { return Header.getNextUnitOffset(); }
288  const DWARFSection &getLineSection() const { return LineSection; }
289  StringRef getStringSection() const { return StringSection; }
291  return StringOffsetSection;
292  }
293 
295  AddrOffsetSection = AOS;
296  AddrOffsetSectionBase = Base;
297  }
298 
299  /// Recursively update address to Die map.
300  void updateAddressDieMap(DWARFDie Die);
301 
303  RangeSection = RS;
304  RangeSectionBase = Base;
305  }
306 
307  Optional<SectionedAddress> getAddrOffsetSectionItem(uint32_t Index) const;
308  Optional<uint64_t> getStringOffsetSectionItem(uint32_t Index) const;
309 
310  DWARFDataExtractor getDebugInfoExtractor() const;
311 
313  return DataExtractor(StringSection, false, 0);
314  }
315 
316  /// Extract the range list referenced by this compile unit from the
317  /// .debug_ranges section. If the extraction is unsuccessful, an error
318  /// is returned. Successful extraction requires that the compile unit
319  /// has already been extracted.
320  Error extractRangeList(uint32_t RangeListOffset,
321  DWARFDebugRangeList &RangeList) const;
322  void clear();
323 
326  return StringOffsetsTableContribution;
327  }
328 
330  assert(StringOffsetsTableContribution);
331  return StringOffsetsTableContribution->getDwarfOffsetByteSize();
332  }
333 
334  uint64_t getStringOffsetsBase() const {
335  assert(StringOffsetsTableContribution);
336  return StringOffsetsTableContribution->Base;
337  }
338 
339  const DWARFAbbreviationDeclarationSet *getAbbreviations() const;
340 
341  static bool isMatchingUnitTypeAndTag(uint8_t UnitType, dwarf::Tag Tag) {
342  switch (UnitType) {
343  case dwarf::DW_UT_compile:
344  return Tag == dwarf::DW_TAG_compile_unit;
345  case dwarf::DW_UT_type:
346  return Tag == dwarf::DW_TAG_type_unit;
347  case dwarf::DW_UT_partial:
348  return Tag == dwarf::DW_TAG_partial_unit;
349  case dwarf::DW_UT_skeleton:
350  return Tag == dwarf::DW_TAG_skeleton_unit;
351  case dwarf::DW_UT_split_compile:
352  case dwarf::DW_UT_split_type:
353  return dwarf::isUnitType(Tag);
354  }
355  return false;
356  }
357 
358  /// Return the number of bytes for the header of a unit of
359  /// UnitType type.
360  ///
361  /// This function must be called with a valid unit type which in
362  /// DWARF5 is defined as one of the following six types.
363  static uint32_t getDWARF5HeaderSize(uint8_t UnitType) {
364  switch (UnitType) {
365  case dwarf::DW_UT_compile:
366  case dwarf::DW_UT_partial:
367  return 12;
368  case dwarf::DW_UT_skeleton:
369  case dwarf::DW_UT_split_compile:
370  return 20;
371  case dwarf::DW_UT_type:
372  case dwarf::DW_UT_split_type:
373  return 24;
374  }
375  llvm_unreachable("Invalid UnitType.");
376  }
377 
378  llvm::Optional<SectionedAddress> getBaseAddress();
379 
380  DWARFDie getUnitDIE(bool ExtractUnitDIEOnly = true) {
381  extractDIEsIfNeeded(ExtractUnitDIEOnly);
382  if (DieArray.empty())
383  return DWARFDie();
384  return DWARFDie(this, &DieArray[0]);
385  }
386 
387  const char *getCompilationDir();
389  extractDIEsIfNeeded(/*CUDieOnly*/ true);
390  return getHeader().getDWOId();
391  }
392  void setDWOId(uint64_t NewID) { Header.setDWOId(NewID); }
393 
394  /// Return a vector of address ranges resulting from a (possibly encoded)
395  /// range list starting at a given offset in the appropriate ranges section.
396  Expected<DWARFAddressRangesVector> findRnglistFromOffset(uint32_t Offset);
397 
398  /// Return a vector of address ranges retrieved from an encoded range
399  /// list whose offset is found via a table lookup given an index (DWARF v5
400  /// and later).
401  Expected<DWARFAddressRangesVector> findRnglistFromIndex(uint32_t Index);
402 
403  /// Return a rangelist's offset based on an index. The index designates
404  /// an entry in the rangelist table's offset array and is supplied by
405  /// DW_FORM_rnglistx.
407  if (RngListTable)
408  return RngListTable->getOffsetEntry(Index);
409  return None;
410  }
411 
412  Expected<DWARFAddressRangesVector> collectAddressRanges();
413 
414  /// Returns subprogram DIE with address range encompassing the provided
415  /// address. The pointer is alive as long as parsed compile unit DIEs are not
416  /// cleared.
417  DWARFDie getSubroutineForAddress(uint64_t Address);
418 
419  /// getInlinedChainForAddress - fetches inlined chain for a given address.
420  /// Returns empty chain if there is no subprogram containing address. The
421  /// chain is valid as long as parsed compile unit DIEs are not cleared.
422  void getInlinedChainForAddress(uint64_t Address,
423  SmallVectorImpl<DWARFDie> &InlinedChain);
424 
425  /// Return the DWARFUnitVector containing this unit.
426  const DWARFUnitVector &getUnitVector() const { return UnitVector; }
427 
428  /// Returns the number of DIEs in the unit. Parses the unit
429  /// if necessary.
430  unsigned getNumDIEs() {
431  extractDIEsIfNeeded(false);
432  return DieArray.size();
433  }
434 
435  /// Return the index of a DIE inside the unit's DIE vector.
436  ///
437  /// It is illegal to call this method with a DIE that hasn't be
438  /// created by this unit. In other word, it's illegal to call this
439  /// method on a DIE that isn't accessible by following
440  /// children/sibling links starting from this unit's getUnitDIE().
442  return getDIEIndex(D.getDebugInfoEntry());
443  }
444 
445  /// Return the DIE object at the given index.
446  DWARFDie getDIEAtIndex(unsigned Index) {
447  assert(Index < DieArray.size());
448  return DWARFDie(this, &DieArray[Index]);
449  }
450 
452  DWARFDie getSibling(const DWARFDebugInfoEntry *Die);
453  DWARFDie getPreviousSibling(const DWARFDebugInfoEntry *Die);
454  DWARFDie getFirstChild(const DWARFDebugInfoEntry *Die);
455  DWARFDie getLastChild(const DWARFDebugInfoEntry *Die);
456 
457  /// Return the DIE object for a given offset inside the
458  /// unit's DIE vector.
459  ///
460  /// The unit needs to have its DIEs extracted for this method to work.
462  extractDIEsIfNeeded(false);
463  assert(!DieArray.empty());
464  auto it = std::lower_bound(
465  DieArray.begin(), DieArray.end(), Offset,
466  [](const DWARFDebugInfoEntry &LHS, uint32_t Offset) {
467  return LHS.getOffset() < Offset;
468  });
469  if (it != DieArray.end() && it->getOffset() == Offset)
470  return DWARFDie(this, &*it);
471  return DWARFDie();
472  }
473 
475  if (auto IndexEntry = Header.getIndexEntry())
476  if (const auto *Contrib = IndexEntry->getOffset(DW_SECT_LINE))
477  return Contrib->Offset;
478  return 0;
479  }
480 
482  extractDIEsIfNeeded(false);
483  return die_iterator_range(DieArray.begin(), DieArray.end());
484  }
485 
486  virtual void dump(raw_ostream &OS, DIDumpOptions DumpOpts) = 0;
487 private:
488  /// Size in bytes of the .debug_info data associated with this compile unit.
489  size_t getDebugInfoSize() const {
490  return Header.getLength() + 4 - getHeaderSize();
491  }
492 
493  /// extractDIEsIfNeeded - Parses a compile unit and indexes its DIEs if it
494  /// hasn't already been done. Returns the number of DIEs parsed at this call.
495  size_t extractDIEsIfNeeded(bool CUDieOnly);
496 
497  /// extractDIEsToVector - Appends all parsed DIEs to a vector.
498  void extractDIEsToVector(bool AppendCUDie, bool AppendNonCUDIEs,
499  std::vector<DWARFDebugInfoEntry> &DIEs) const;
500 
501  /// clearDIEs - Clear parsed DIEs to keep memory usage low.
502  void clearDIEs(bool KeepCUDie);
503 
504  /// parseDWO - Parses .dwo file for current compile unit. Returns true if
505  /// it was actually constructed.
506  bool parseDWO();
507 };
508 
509 } // end namespace llvm
510 
511 #endif // LLVM_DEBUGINFO_DWARF_DWARFUNIT_H
static bool isMatchingUnitTypeAndTag(uint8_t UnitType, dwarf::Tag Tag)
Definition: DWARFUnit.h:341
uint64_t CallInst * C
A helper struct providing information about the byte size of DW_FORM values that vary in size dependi...
Definition: Dwarf.h:498
LLVMContext & Context
This class represents lattice values for constants.
Definition: AllocatorList.h:23
Represents base address of the CU.
Definition: DWARFUnit.h:165
bool isUnitType(uint8_t UnitType)
Definition: Dwarf.h:343
bool isTypeUnit() const
Definition: DWARFUnit.h:286
This provides a very simple, boring adaptor for a begin and end iterator into a range type...
uint8_t getDwarfOffsetByteSize() const
Definition: DWARFUnit.h:82
uint8_t getRefAddrByteSize() const
The definition of the size of form DW_FORM_ref_addr depends on the version.
Definition: Dwarf.h:506
const DWARFSection * getLocSection() const
Definition: DWARFUnit.h:272
void setAddrOffsetSection(const DWARFSection *AOS, uint32_t Base)
Definition: DWARFUnit.h:294
const Optional< StrOffsetsContributionDescriptor > & getStringOffsetsTableContribution() const
Definition: DWARFUnit.h:325
unsigned getNumUnits() const
Returns number of all units held by this instance.
Definition: DWARFUnit.h:143
uint8_t getRefAddrByteSize() const
Definition: DWARFUnit.h:280
dwarf::DwarfFormat getFormat() const
Definition: DWARFUnit.h:177
uint8_t getDwarfStringOffsetsByteSize() const
Definition: DWARFUnit.h:329
const DWARFSection & getInfoSection() const
Definition: DWARFUnit.h:271
const dwarf::FormParams & getFormParams() const
Definition: DWARFUnit.h:275
uint32_t getOffset() const
Definition: DWARFUnit.h:76
uint32_t getNextUnitOffset() const
Definition: DWARFUnit.h:287
Optional< uint64_t > getDWOId() const
Definition: DWARFUnit.h:87
uint16_t getVersion() const
Definition: DWARFUnit.h:78
DwarfFormat
Constants that define the DWARF format as 32 or 64 bit.
Definition: Dwarf.h:65
uint64_t getAbbrOffset() const
Definition: DWARFUnit.h:86
const DWARFSection & getLineSection() const
Definition: DWARFUnit.h:288
Tagged union holding either a T or a Error.
Definition: CachePruning.h:22
const DWARFDebugInfoEntry * getDebugInfoEntry() const
Definition: DWARFDie.h:52
bool isTypeUnit() const
Definition: DWARFUnit.h:96
uint8_t getAddressByteSize() const
Definition: DWARFUnit.h:279
unsigned getNumDIEs()
Returns the number of DIEs in the unit.
Definition: DWARFUnit.h:430
bool isDWOUnit() const
Definition: DWARFUnit.h:269
uint32_t getTypeOffset() const
Definition: DWARFUnit.h:94
auto lower_bound(R &&Range, ForwardIt I) -> decltype(adl_begin(Range))
Provide wrappers to std::lower_bound which take ranges instead of having to pass begin/end explicitly...
Definition: STLExtras.h:1281
void setDWOId(uint64_t NewID)
Definition: DWARFUnit.h:392
const DWARFSection & getStringOffsetSection() const
Definition: DWARFUnit.h:290
uint16_t getVersion() const
Definition: DWARFUnit.h:278
Container for dump options that control which debug information will be dumped.
Definition: DIContext.h:158
die_iterator_range dies()
Definition: DWARFUnit.h:481
Utility class that carries the DWARF compile/type unit and the debug info entry in an object...
Definition: DWARFDie.h:42
void dump(const SparseBitVector< ElementSize > &LHS, raw_ostream &out)
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
DWARFSectionKind
struct UnitT Unit
uint8_t getUnitType() const
Definition: DWARFUnit.h:95
Optional< uint64_t > getDWOId()
Definition: DWARFUnit.h:388
static uint32_t getDWARF5HeaderSize(uint8_t UnitType)
Return the number of bytes for the header of a unit of UnitType type.
Definition: DWARFUnit.h:363
uint32_t getLength() const
Definition: DWARFUnit.h:85
bool extract(DWARFContext &Context, const DWARFDataExtractor &debug_info, uint32_t *offset_ptr, DWARFSectionKind Kind=DW_SECT_INFO, const DWARFUnitIndex *Index=nullptr, const DWARFUnitIndex::Entry *Entry=nullptr)
Parse a unit header from debug_info starting at offset_ptr.
Definition: DWARFUnit.cpp:234
StringRef getStringSection() const
Definition: DWARFUnit.h:289
uint32_t getDIEIndex(const DWARFDie &D)
Return the index of a DIE inside the unit&#39;s DIE vector.
Definition: DWARFUnit.h:441
SectionKind - This is a simple POD value that classifies the properties of a section.
Definition: SectionKind.h:22
DWARFContext & getContext() const
Definition: DWARFUnit.h:270
void setRangesSection(const DWARFSection *RS, uint32_t Base)
Definition: DWARFUnit.h:302
uint32_t getHeaderSize() const
Size in bytes of the parsed unit header.
Definition: DWARFUnit.h:244
typename UnitVector::iterator iterator
Definition: DWARFUnit.h:118
const dwarf::FormParams & getFormParams() const
Definition: DWARFUnit.h:77
const DWARFUnitIndex & getDWARFUnitIndex(DWARFContext &Context, DWARFSectionKind Kind)
Definition: DWARFUnit.cpp:649
Base class describing the header of any kind of "unit." Some information is specific to certain unit ...
Definition: DWARFUnit.h:46
StrOffsetsContributionDescriptor(uint64_t Base, uint64_t Size, uint8_t Version, dwarf::DwarfFormat Format)
Definition: DWARFUnit.h:172
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
uint8_t getAddressByteSize() const
Definition: DWARFUnit.h:80
dwarf::DwarfFormat getFormat() const
Definition: DWARFUnit.h:79
const DWARFSection * LocSection
Definition: DWARFUnit.h:200
const DWARFUnitVector & getUnitVector() const
Return the DWARFUnitVector containing this unit.
Definition: DWARFUnit.h:426
uint64_t getTypeHash() const
Definition: DWARFUnit.h:93
A DataExtractor (typically for an in-memory copy of an object-file section) plus a relocation map for...
uint64_t getStringOffsetsBase() const
Definition: DWARFUnit.h:334
DWARFDie getUnitDIE(bool ExtractUnitDIEOnly=true)
Definition: DWARFUnit.h:380
void setDWOId(uint64_t Id)
Definition: DWARFUnit.h:88
const DWARFUnitIndex::Entry * getIndexEntry() const
Definition: DWARFUnit.h:92
auto size(R &&Range, typename std::enable_if< std::is_same< typename std::iterator_traits< decltype(Range.begin())>::iterator_category, std::random_access_iterator_tag >::value, void >::type *=nullptr) -> decltype(std::distance(Range.begin(), Range.end()))
Get the size of a range.
Definition: STLExtras.h:1166
This is a &#39;vector&#39; (really, a variable-sized array), optimized for the case when the array is small...
Definition: SmallVector.h:839
DWARFContext This data structure is the top level entity that deals with dwarf debug information pars...
Definition: DWARFContext.h:58
static GCRegistry::Add< StatepointGC > D("statepoint-example", "an example strategy for statepoint")
Describe a collection of units.
Definition: DWARFUnit.h:109
StringRef getLocSectionData() const
Definition: DWARFUnit.h:273
A range adaptor for a pair of iterators.
This file contains constants used for implementing Dwarf debug support.
uint32_t getLength() const
Definition: DWARFUnit.h:284
static void clear(coro::Shape &Shape)
Definition: Coroutines.cpp:211
uint32_t getNextUnitOffset() const
Definition: DWARFUnit.h:101
DataExtractor getStringExtractor() const
Definition: DWARFUnit.h:312
void finishedInfoUnits()
Indicate that parsing .debug_info[.dwo] is done, and remaining units will be from ...
Definition: DWARFUnit.h:152
DWARFDie getDIEAtIndex(unsigned Index)
Return the DIE object at the given index.
Definition: DWARFUnit.h:446
uint8_t getRefAddrByteSize() const
Definition: DWARFUnit.h:81
uint32_t getOffset() const
Definition: DWARFUnit.h:274
uint8_t getSize() const
Definition: DWARFUnit.h:99
const unsigned Kind
uint8_t getUnitType() const
Definition: DWARFUnit.h:285
DWARFDie getDIEForOffset(uint32_t Offset)
Return the DIE object for a given offset inside the unit&#39;s DIE vector.
Definition: DWARFUnit.h:461
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
DwarfFormat Format
Definition: Dwarf.h:501
const DWARFUnitHeader & getHeader() const
Definition: DWARFUnit.h:241
DWARFDebugInfoEntry - A DIE with only the minimum required data.
unsigned getNumTypesUnits() const
Returns number of units from all .debug_types[.dwo] sections.
Definition: DWARFUnit.h:149
Lightweight error class with error context and mandatory checking.
Definition: Error.h:157
static const Function * getParent(const Value *V)
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:45
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
uint8_t getDwarfOffsetByteSize() const
The size of a reference is determined by the DWARF 32/64-bit format.
Definition: Dwarf.h:513
Optional< uint32_t > getRnglistOffset(uint32_t Index)
Return a rangelist&#39;s offset based on an index.
Definition: DWARFUnit.h:406
const uint64_t Version
Definition: InstrProf.h:894
uint8_t getDwarfOffsetByteSize() const
Definition: DWARFUnit.h:281
uint32_t getLineTableOffset() const
Definition: DWARFUnit.h:474
unsigned getNumInfoUnits() const
Returns number of units from all .debug_info[.dwo] sections.
Definition: DWARFUnit.h:145
StringRef LocSectionData
Definition: DWARFUnit.h:201