Bug Summary

File:tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
Location:line 3405, column 5
Description:Called C++ object pointer is null

Annotated Source Code

1//===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "SymbolFileDWARF.h"
11
12// Other libraries and framework includes
13#include "clang/AST/ASTConsumer.h"
14#include "clang/AST/ASTContext.h"
15#include "clang/AST/Decl.h"
16#include "clang/AST/DeclGroup.h"
17#include "clang/AST/DeclObjC.h"
18#include "clang/AST/DeclTemplate.h"
19#include "clang/Basic/Builtins.h"
20#include "clang/Basic/IdentifierTable.h"
21#include "clang/Basic/LangOptions.h"
22#include "clang/Basic/SourceManager.h"
23#include "clang/Basic/TargetInfo.h"
24#include "clang/Basic/Specifiers.h"
25#include "clang/Sema/DeclSpec.h"
26
27#include "llvm/Support/Casting.h"
28
29#include "lldb/Core/Module.h"
30#include "lldb/Core/PluginManager.h"
31#include "lldb/Core/RegularExpression.h"
32#include "lldb/Core/Scalar.h"
33#include "lldb/Core/Section.h"
34#include "lldb/Core/StreamFile.h"
35#include "lldb/Core/StreamString.h"
36#include "lldb/Core/Timer.h"
37#include "lldb/Core/Value.h"
38
39#include "lldb/Host/Host.h"
40
41#include "lldb/Symbol/Block.h"
42#include "lldb/Symbol/ClangExternalASTSourceCallbacks.h"
43#include "lldb/Symbol/CompileUnit.h"
44#include "lldb/Symbol/LineTable.h"
45#include "lldb/Symbol/ObjectFile.h"
46#include "lldb/Symbol/SymbolVendor.h"
47#include "lldb/Symbol/VariableList.h"
48
49#include "lldb/Target/ObjCLanguageRuntime.h"
50#include "lldb/Target/CPPLanguageRuntime.h"
51
52#include "DWARFCompileUnit.h"
53#include "DWARFDebugAbbrev.h"
54#include "DWARFDebugAranges.h"
55#include "DWARFDebugInfo.h"
56#include "DWARFDebugInfoEntry.h"
57#include "DWARFDebugLine.h"
58#include "DWARFDebugPubnames.h"
59#include "DWARFDebugRanges.h"
60#include "DWARFDeclContext.h"
61#include "DWARFDIECollection.h"
62#include "DWARFFormValue.h"
63#include "DWARFLocationList.h"
64#include "LogChannelDWARF.h"
65#include "SymbolFileDWARFDebugMap.h"
66
67#include <map>
68
69#include <ctype.h>
70#include <string.h>
71
72//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
73
74#ifdef ENABLE_DEBUG_PRINTF
75#include <stdio.h>
76#define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
77#else
78#define DEBUG_PRINTF(fmt, ...)
79#endif
80
81#define DIE_IS_BEING_PARSED((lldb_private::Type*)1) ((lldb_private::Type*)1)
82
83using namespace lldb;
84using namespace lldb_private;
85
86//static inline bool
87//child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag)
88//{
89// switch (tag)
90// {
91// default:
92// break;
93// case DW_TAG_subprogram:
94// case DW_TAG_inlined_subroutine:
95// case DW_TAG_class_type:
96// case DW_TAG_structure_type:
97// case DW_TAG_union_type:
98// return true;
99// }
100// return false;
101//}
102//
103static AccessType
104DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility)
105{
106 switch (dwarf_accessibility)
107 {
108 case DW_ACCESS_public: return eAccessPublic;
109 case DW_ACCESS_private: return eAccessPrivate;
110 case DW_ACCESS_protected: return eAccessProtected;
111 default: break;
112 }
113 return eAccessNone;
114}
115
116static const char*
117removeHostnameFromPathname(const char* path_from_dwarf)
118{
119 if (!path_from_dwarf || !path_from_dwarf[0])
120 {
121 return path_from_dwarf;
122 }
123
124 const char *colon_pos = strchr(path_from_dwarf, ':');
125 if (!colon_pos)
126 {
127 return path_from_dwarf;
128 }
129
130 // check whether we have a windows path, and so the first character
131 // is a drive-letter not a hostname.
132 if (
133 colon_pos == path_from_dwarf + 1 &&
134 isalpha(*path_from_dwarf) &&
135 strlen(path_from_dwarf) > 2 &&
136 '\\' == path_from_dwarf[2])
137 {
138 return path_from_dwarf;
139 }
140
141 return colon_pos + 1;
142}
143
144#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE)
145
146class DIEStack
147{
148public:
149
150 void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
151 {
152 m_dies.push_back (DIEInfo(cu, die));
153 }
154
155
156 void LogDIEs (Log *log, SymbolFileDWARF *dwarf)
157 {
158 StreamString log_strm;
159 const size_t n = m_dies.size();
160 log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n);
161 for (size_t i=0; i<n; i++)
162 {
163 DWARFCompileUnit *cu = m_dies[i].cu;
164 const DWARFDebugInfoEntry *die = m_dies[i].die;
165 std::string qualified_name;
166 die->GetQualifiedName(dwarf, cu, qualified_name);
167 log_strm.Printf ("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n",
168 (uint64_t)i,
169 die->GetOffset(),
170 DW_TAG_value_to_name(die->Tag()),
171 qualified_name.c_str());
172 }
173 log->PutCString(log_strm.GetData());
174 }
175 void Pop ()
176 {
177 m_dies.pop_back();
178 }
179
180 class ScopedPopper
181 {
182 public:
183 ScopedPopper (DIEStack &die_stack) :
184 m_die_stack (die_stack),
185 m_valid (false)
186 {
187 }
188
189 void
190 Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
191 {
192 m_valid = true;
193 m_die_stack.Push (cu, die);
194 }
195
196 ~ScopedPopper ()
197 {
198 if (m_valid)
199 m_die_stack.Pop();
200 }
201
202
203
204 protected:
205 DIEStack &m_die_stack;
206 bool m_valid;
207 };
208
209protected:
210 struct DIEInfo {
211 DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) :
212 cu(c),
213 die(d)
214 {
215 }
216 DWARFCompileUnit *cu;
217 const DWARFDebugInfoEntry *die;
218 };
219 typedef std::vector<DIEInfo> Stack;
220 Stack m_dies;
221};
222#endif
223
224void
225SymbolFileDWARF::Initialize()
226{
227 LogChannelDWARF::Initialize();
228 PluginManager::RegisterPlugin (GetPluginNameStatic(),
229 GetPluginDescriptionStatic(),
230 CreateInstance);
231}
232
233void
234SymbolFileDWARF::Terminate()
235{
236 PluginManager::UnregisterPlugin (CreateInstance);
237 LogChannelDWARF::Initialize();
238}
239
240
241lldb_private::ConstString
242SymbolFileDWARF::GetPluginNameStatic()
243{
244 static ConstString g_name("dwarf");
245 return g_name;
246}
247
248const char *
249SymbolFileDWARF::GetPluginDescriptionStatic()
250{
251 return "DWARF and DWARF3 debug symbol file reader.";
252}
253
254
255SymbolFile*
256SymbolFileDWARF::CreateInstance (ObjectFile* obj_file)
257{
258 return new SymbolFileDWARF(obj_file);
259}
260
261TypeList *
262SymbolFileDWARF::GetTypeList ()
263{
264 if (GetDebugMapSymfile ())
265 return m_debug_map_symfile->GetTypeList();
266 return m_obj_file->GetModule()->GetTypeList();
267
268}
269void
270SymbolFileDWARF::GetTypes (DWARFCompileUnit* cu,
271 const DWARFDebugInfoEntry *die,
272 dw_offset_t min_die_offset,
273 dw_offset_t max_die_offset,
274 uint32_t type_mask,
275 TypeSet &type_set)
276{
277 if (cu)
278 {
279 if (die)
280 {
281 const dw_offset_t die_offset = die->GetOffset();
282
283 if (die_offset >= max_die_offset)
284 return;
285
286 if (die_offset >= min_die_offset)
287 {
288 const dw_tag_t tag = die->Tag();
289
290 bool add_type = false;
291
292 switch (tag)
293 {
294 case DW_TAG_array_type: add_type = (type_mask & eTypeClassArray ) != 0; break;
295 case DW_TAG_unspecified_type:
296 case DW_TAG_base_type: add_type = (type_mask & eTypeClassBuiltin ) != 0; break;
297 case DW_TAG_class_type: add_type = (type_mask & eTypeClassClass ) != 0; break;
298 case DW_TAG_structure_type: add_type = (type_mask & eTypeClassStruct ) != 0; break;
299 case DW_TAG_union_type: add_type = (type_mask & eTypeClassUnion ) != 0; break;
300 case DW_TAG_enumeration_type: add_type = (type_mask & eTypeClassEnumeration ) != 0; break;
301 case DW_TAG_subroutine_type:
302 case DW_TAG_subprogram:
303 case DW_TAG_inlined_subroutine: add_type = (type_mask & eTypeClassFunction ) != 0; break;
304 case DW_TAG_pointer_type: add_type = (type_mask & eTypeClassPointer ) != 0; break;
305 case DW_TAG_rvalue_reference_type:
306 case DW_TAG_reference_type: add_type = (type_mask & eTypeClassReference ) != 0; break;
307 case DW_TAG_typedef: add_type = (type_mask & eTypeClassTypedef ) != 0; break;
308 case DW_TAG_ptr_to_member_type: add_type = (type_mask & eTypeClassMemberPointer ) != 0; break;
309 }
310
311 if (add_type)
312 {
313 const bool assert_not_being_parsed = true;
314 Type *type = ResolveTypeUID (cu, die, assert_not_being_parsed);
315 if (type)
316 {
317 if (type_set.find(type) == type_set.end())
318 type_set.insert(type);
319 }
320 }
321 }
322
323 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
324 child_die != NULL__null;
325 child_die = child_die->GetSibling())
326 {
327 GetTypes (cu, child_die, min_die_offset, max_die_offset, type_mask, type_set);
328 }
329 }
330 }
331}
332
333size_t
334SymbolFileDWARF::GetTypes (SymbolContextScope *sc_scope,
335 uint32_t type_mask,
336 TypeList &type_list)
337
338{
339 TypeSet type_set;
340
341 CompileUnit *comp_unit = NULL__null;
342 DWARFCompileUnit* dwarf_cu = NULL__null;
343 if (sc_scope)
344 comp_unit = sc_scope->CalculateSymbolContextCompileUnit();
345
346 if (comp_unit)
347 {
348 dwarf_cu = GetDWARFCompileUnit(comp_unit);
349 if (dwarf_cu == 0)
350 return 0;
351 GetTypes (dwarf_cu,
352 dwarf_cu->DIE(),
353 dwarf_cu->GetOffset(),
354 dwarf_cu->GetNextCompileUnitOffset(),
355 type_mask,
356 type_set);
357 }
358 else
359 {
360 DWARFDebugInfo* info = DebugInfo();
361 if (info)
362 {
363 const size_t num_cus = info->GetNumCompileUnits();
364 for (size_t cu_idx=0; cu_idx<num_cus; ++cu_idx)
365 {
366 dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
367 if (dwarf_cu)
368 {
369 GetTypes (dwarf_cu,
370 dwarf_cu->DIE(),
371 0,
372 UINT32_MAX(4294967295U),
373 type_mask,
374 type_set);
375 }
376 }
377 }
378 }
379// if (m_using_apple_tables)
380// {
381// DWARFMappedHash::MemoryTable *apple_types = m_apple_types_ap.get();
382// if (apple_types)
383// {
384// apple_types->ForEach([this, &type_set, apple_types, type_mask](const DWARFMappedHash::DIEInfoArray &die_info_array) -> bool {
385//
386// for (auto die_info: die_info_array)
387// {
388// bool add_type = TagMatchesTypeMask (type_mask, 0);
389// if (!add_type)
390// {
391// dw_tag_t tag = die_info.tag;
392// if (tag == 0)
393// {
394// const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_info.offset, NULL);
395// tag = die->Tag();
396// }
397// add_type = TagMatchesTypeMask (type_mask, tag);
398// }
399// if (add_type)
400// {
401// Type *type = ResolveTypeUID(die_info.offset);
402//
403// if (type_set.find(type) == type_set.end())
404// type_set.insert(type);
405// }
406// }
407// return true; // Keep iterating
408// });
409// }
410// }
411// else
412// {
413// if (!m_indexed)
414// Index ();
415//
416// m_type_index.ForEach([this, &type_set, type_mask](const char *name, uint32_t die_offset) -> bool {
417//
418// bool add_type = TagMatchesTypeMask (type_mask, 0);
419//
420// if (!add_type)
421// {
422// const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtr(die_offset, NULL);
423// if (die)
424// {
425// const dw_tag_t tag = die->Tag();
426// add_type = TagMatchesTypeMask (type_mask, tag);
427// }
428// }
429//
430// if (add_type)
431// {
432// Type *type = ResolveTypeUID(die_offset);
433//
434// if (type_set.find(type) == type_set.end())
435// type_set.insert(type);
436// }
437// return true; // Keep iterating
438// });
439// }
440
441 std::set<ClangASTType> clang_type_set;
442 size_t num_types_added = 0;
443 for (Type *type : type_set)
444 {
445 ClangASTType clang_type = type->GetClangForwardType();
446 if (clang_type_set.find(clang_type) == clang_type_set.end())
447 {
448 clang_type_set.insert(clang_type);
449 type_list.Insert (type->shared_from_this());
450 ++num_types_added;
451 }
452 }
453 return num_types_added;
454}
455
456
457//----------------------------------------------------------------------
458// Gets the first parent that is a lexical block, function or inlined
459// subroutine, or compile unit.
460//----------------------------------------------------------------------
461static const DWARFDebugInfoEntry *
462GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die)
463{
464 const DWARFDebugInfoEntry *die;
465 for (die = child_die->GetParent(); die != NULL__null; die = die->GetParent())
466 {
467 dw_tag_t tag = die->Tag();
468
469 switch (tag)
470 {
471 case DW_TAG_compile_unit:
472 case DW_TAG_subprogram:
473 case DW_TAG_inlined_subroutine:
474 case DW_TAG_lexical_block:
475 return die;
476 }
477 }
478 return NULL__null;
479}
480
481
482SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) :
483 SymbolFile (objfile),
484 UserID (0), // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID
485 m_debug_map_module_wp (),
486 m_debug_map_symfile (NULL__null),
487 m_clang_tu_decl (NULL__null),
488 m_flags(),
489 m_data_debug_abbrev (),
490 m_data_debug_aranges (),
491 m_data_debug_frame (),
492 m_data_debug_info (),
493 m_data_debug_line (),
494 m_data_debug_loc (),
495 m_data_debug_ranges (),
496 m_data_debug_str (),
497 m_data_apple_names (),
498 m_data_apple_types (),
499 m_data_apple_namespaces (),
500 m_abbr(),
501 m_info(),
502 m_line(),
503 m_apple_names_ap (),
504 m_apple_types_ap (),
505 m_apple_namespaces_ap (),
506 m_apple_objc_ap (),
507 m_function_basename_index(),
508 m_function_fullname_index(),
509 m_function_method_index(),
510 m_function_selector_index(),
511 m_objc_class_selectors_index(),
512 m_global_index(),
513 m_type_index(),
514 m_namespace_index(),
515 m_indexed (false),
516 m_is_external_ast_source (false),
517 m_using_apple_tables (false),
518 m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate),
519 m_ranges(),
520 m_unique_ast_type_map ()
521{
522}
523
524SymbolFileDWARF::~SymbolFileDWARF()
525{
526 if (m_is_external_ast_source)
527 {
528 ModuleSP module_sp (m_obj_file->GetModule());
529 if (module_sp)
530 module_sp->GetClangASTContext().RemoveExternalSource ();
531 }
532}
533
534static const ConstString &
535GetDWARFMachOSegmentName ()
536{
537 static ConstString g_dwarf_section_name ("__DWARF");
538 return g_dwarf_section_name;
539}
540
541UniqueDWARFASTTypeMap &
542SymbolFileDWARF::GetUniqueDWARFASTTypeMap ()
543{
544 if (GetDebugMapSymfile ())
545 return m_debug_map_symfile->GetUniqueDWARFASTTypeMap ();
546 return m_unique_ast_type_map;
547}
548
549ClangASTContext &
550SymbolFileDWARF::GetClangASTContext ()
551{
552 if (GetDebugMapSymfile ())
553 return m_debug_map_symfile->GetClangASTContext ();
554
555 ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
556 if (!m_is_external_ast_source)
557 {
558 m_is_external_ast_source = true;
559 llvm::IntrusiveRefCntPtr<clang::ExternalASTSource> ast_source_ap (
560 new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl,
561 SymbolFileDWARF::CompleteObjCInterfaceDecl,
562 SymbolFileDWARF::FindExternalVisibleDeclsByName,
563 SymbolFileDWARF::LayoutRecordType,
564 this));
565 ast.SetExternalSource (ast_source_ap);
566 }
567 return ast;
568}
569
570void
571SymbolFileDWARF::InitializeObject()
572{
573 // Install our external AST source callbacks so we can complete Clang types.
574 ModuleSP module_sp (m_obj_file->GetModule());
575 if (module_sp)
576 {
577 const SectionList *section_list = module_sp->GetSectionList();
578
579 const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
580
581 // Memory map the DWARF mach-o segment so we have everything mmap'ed
582 // to keep our heap memory usage down.
583 if (section)
584 m_obj_file->MemoryMapSectionData(section, m_dwarf_data);
585 }
586 get_apple_names_data();
587 if (m_data_apple_names.GetByteSize() > 0)
588 {
589 m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names"));
590 if (m_apple_names_ap->IsValid())
591 m_using_apple_tables = true;
592 else
593 m_apple_names_ap.reset();
594 }
595 get_apple_types_data();
596 if (m_data_apple_types.GetByteSize() > 0)
597 {
598 m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types"));
599 if (m_apple_types_ap->IsValid())
600 m_using_apple_tables = true;
601 else
602 m_apple_types_ap.reset();
603 }
604
605 get_apple_namespaces_data();
606 if (m_data_apple_namespaces.GetByteSize() > 0)
607 {
608 m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces"));
609 if (m_apple_namespaces_ap->IsValid())
610 m_using_apple_tables = true;
611 else
612 m_apple_namespaces_ap.reset();
613 }
614
615 get_apple_objc_data();
616 if (m_data_apple_objc.GetByteSize() > 0)
617 {
618 m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc"));
619 if (m_apple_objc_ap->IsValid())
620 m_using_apple_tables = true;
621 else
622 m_apple_objc_ap.reset();
623 }
624}
625
626bool
627SymbolFileDWARF::SupportedVersion(uint16_t version)
628{
629 return version == 2 || version == 3 || version == 4;
630}
631
632uint32_t
633SymbolFileDWARF::CalculateAbilities ()
634{
635 uint32_t abilities = 0;
636 if (m_obj_file != NULL__null)
637 {
638 const Section* section = NULL__null;
639 const SectionList *section_list = m_obj_file->GetSectionList();
640 if (section_list == NULL__null)
641 return 0;
642
643 uint64_t debug_abbrev_file_size = 0;
644 uint64_t debug_info_file_size = 0;
645 uint64_t debug_line_file_size = 0;
646
647 section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
648
649 if (section)
650 section_list = &section->GetChildren ();
651
652 section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get();
653 if (section != NULL__null)
654 {
655 debug_info_file_size = section->GetFileSize();
656
657 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get();
658 if (section)
659 debug_abbrev_file_size = section->GetFileSize();
660 else
661 m_flags.Set (flagsGotDebugAbbrevData);
662
663 section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get();
664 if (!section)
665 m_flags.Set (flagsGotDebugArangesData);
666
667 section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get();
668 if (!section)
669 m_flags.Set (flagsGotDebugFrameData);
670
671 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get();
672 if (section)
673 debug_line_file_size = section->GetFileSize();
674 else
675 m_flags.Set (flagsGotDebugLineData);
676
677 section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get();
678 if (!section)
679 m_flags.Set (flagsGotDebugLocData);
680
681 section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get();
682 if (!section)
683 m_flags.Set (flagsGotDebugMacInfoData);
684
685 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get();
686 if (!section)
687 m_flags.Set (flagsGotDebugPubNamesData);
688
689 section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get();
690 if (!section)
691 m_flags.Set (flagsGotDebugPubTypesData);
692
693 section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get();
694 if (!section)
695 m_flags.Set (flagsGotDebugRangesData);
696
697 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
698 if (!section)
699 m_flags.Set (flagsGotDebugStrData);
700 }
701 else
702 {
703 const char *symfile_dir_cstr = m_obj_file->GetFileSpec().GetDirectory().GetCString();
704 if (symfile_dir_cstr)
705 {
706 if (strcasestr(symfile_dir_cstr, ".dsym"))
707 {
708 if (m_obj_file->GetType() == ObjectFile::eTypeDebugInfo)
709 {
710 // We have a dSYM file that didn't have a any debug info.
711 // If the string table has a size of 1, then it was made from
712 // an executable with no debug info, or from an executable that
713 // was stripped.
714 section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
715 if (section && section->GetFileSize() == 1)
716 {
717 m_obj_file->GetModule()->ReportWarning ("empty dSYM file detected, dSYM was created with an executable with no debug info.");
718 }
719 }
720 }
721 }
722 }
723
724 if (debug_abbrev_file_size > 0 && debug_info_file_size > 0)
725 abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes;
726
727 if (debug_line_file_size > 0)
728 abilities |= LineTables;
729 }
730 return abilities;
731}
732
733const DWARFDataExtractor&
734SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DWARFDataExtractor &data)
735{
736 if (m_flags.IsClear (got_flag))
737 {
738 ModuleSP module_sp (m_obj_file->GetModule());
739 m_flags.Set (got_flag);
740 const SectionList *section_list = module_sp->GetSectionList();
741 if (section_list)
742 {
743 SectionSP section_sp (section_list->FindSectionByType(sect_type, true));
744 if (section_sp)
745 {
746 // See if we memory mapped the DWARF segment?
747 if (m_dwarf_data.GetByteSize())
748 {
749 data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize());
750 }
751 else
752 {
753 if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0)
754 data.Clear();
755 }
756 }
757 }
758 }
759 return data;
760}
761
762const DWARFDataExtractor&
763SymbolFileDWARF::get_debug_abbrev_data()
764{
765 return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev);
766}
767
768const DWARFDataExtractor&
769SymbolFileDWARF::get_debug_aranges_data()
770{
771 return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges);
772}
773
774const DWARFDataExtractor&
775SymbolFileDWARF::get_debug_frame_data()
776{
777 return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame);
778}
779
780const DWARFDataExtractor&
781SymbolFileDWARF::get_debug_info_data()
782{
783 return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info);
784}
785
786const DWARFDataExtractor&
787SymbolFileDWARF::get_debug_line_data()
788{
789 return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line);
790}
791
792const DWARFDataExtractor&
793SymbolFileDWARF::get_debug_loc_data()
794{
795 return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc);
796}
797
798const DWARFDataExtractor&
799SymbolFileDWARF::get_debug_ranges_data()
800{
801 return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges);
802}
803
804const DWARFDataExtractor&
805SymbolFileDWARF::get_debug_str_data()
806{
807 return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str);
808}
809
810const DWARFDataExtractor&
811SymbolFileDWARF::get_apple_names_data()
812{
813 return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names);
814}
815
816const DWARFDataExtractor&
817SymbolFileDWARF::get_apple_types_data()
818{
819 return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types);
820}
821
822const DWARFDataExtractor&
823SymbolFileDWARF::get_apple_namespaces_data()
824{
825 return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces);
826}
827
828const DWARFDataExtractor&
829SymbolFileDWARF::get_apple_objc_data()
830{
831 return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc);
832}
833
834
835DWARFDebugAbbrev*
836SymbolFileDWARF::DebugAbbrev()
837{
838 if (m_abbr.get() == NULL__null)
839 {
840 const DWARFDataExtractor &debug_abbrev_data = get_debug_abbrev_data();
841 if (debug_abbrev_data.GetByteSize() > 0)
842 {
843 m_abbr.reset(new DWARFDebugAbbrev());
844 if (m_abbr.get())
845 m_abbr->Parse(debug_abbrev_data);
846 }
847 }
848 return m_abbr.get();
849}
850
851const DWARFDebugAbbrev*
852SymbolFileDWARF::DebugAbbrev() const
853{
854 return m_abbr.get();
855}
856
857
858DWARFDebugInfo*
859SymbolFileDWARF::DebugInfo()
860{
861 if (m_info.get() == NULL__null)
862 {
863 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p",
864 __PRETTY_FUNCTION__, static_cast<void*>(this));
865 if (get_debug_info_data().GetByteSize() > 0)
866 {
867 m_info.reset(new DWARFDebugInfo());
868 if (m_info.get())
869 {
870 m_info->SetDwarfData(this);
871 }
872 }
873 }
874 return m_info.get();
875}
876
877const DWARFDebugInfo*
878SymbolFileDWARF::DebugInfo() const
879{
880 return m_info.get();
881}
882
883DWARFCompileUnit*
884SymbolFileDWARF::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit)
885{
886 DWARFDebugInfo* info = DebugInfo();
887 if (info)
888 {
889 if (GetDebugMapSymfile ())
890 {
891 // The debug map symbol file made the compile units for this DWARF
892 // file which is .o file with DWARF in it, and we should have
893 // only 1 compile unit which is at offset zero in the DWARF.
894 // TODO: modify to support LTO .o files where each .o file might
895 // have multiple DW_TAG_compile_unit tags.
896 return info->GetCompileUnit(0).get();
897 }
898 else
899 {
900 // Just a normal DWARF file whose user ID for the compile unit is
901 // the DWARF offset itself
902 return info->GetCompileUnit((dw_offset_t)comp_unit->GetID()).get();
903 }
904 }
905 return NULL__null;
906}
907
908
909DWARFDebugRanges*
910SymbolFileDWARF::DebugRanges()
911{
912 if (m_ranges.get() == NULL__null)
913 {
914 Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p",
915 __PRETTY_FUNCTION__, static_cast<void*>(this));
916 if (get_debug_ranges_data().GetByteSize() > 0)
917 {
918 m_ranges.reset(new DWARFDebugRanges());
919 if (m_ranges.get())
920 m_ranges->Extract(this);
921 }
922 }
923 return m_ranges.get();
924}
925
926const DWARFDebugRanges*
927SymbolFileDWARF::DebugRanges() const
928{
929 return m_ranges.get();
930}
931
932lldb::CompUnitSP
933SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
934{
935 CompUnitSP cu_sp;
936 if (dwarf_cu)
937 {
938 CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData();
939 if (comp_unit)
940 {
941 // We already parsed this compile unit, had out a shared pointer to it
942 cu_sp = comp_unit->shared_from_this();
943 }
944 else
945 {
946 if (GetDebugMapSymfile ())
947 {
948 // Let the debug map create the compile unit
949 cu_sp = m_debug_map_symfile->GetCompileUnit(this);
950 dwarf_cu->SetUserData(cu_sp.get());
951 }
952 else
953 {
954 ModuleSP module_sp (m_obj_file->GetModule());
955 if (module_sp)
956 {
957 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly ();
958 if (cu_die)
959 {
960 const char * cu_die_name = cu_die->GetName(this, dwarf_cu);
961 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL__null);
962 LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
963 if (cu_die_name)
964 {
965 std::string ramapped_file;
966 FileSpec cu_file_spec;
967
968 if (cu_die_name[0] == '/' || cu_comp_dir == NULL__null || cu_comp_dir[0] == '\0')
969 {
970 // If we have a full path to the compile unit, we don't need to resolve
971 // the file. This can be expensive e.g. when the source files are NFS mounted.
972 if (module_sp->RemapSourceFile(cu_die_name, ramapped_file))
973 cu_file_spec.SetFile (ramapped_file.c_str(), false);
974 else
975 cu_file_spec.SetFile (cu_die_name, false);
976 }
977 else
978 {
979 // DWARF2/3 suggests the form hostname:pathname for compilation directory.
980 // Remove the host part if present.
981 cu_comp_dir = removeHostnameFromPathname(cu_comp_dir);
982 std::string fullpath(cu_comp_dir);
983
984 if (*fullpath.rbegin() != '/')
985 fullpath += '/';
986 fullpath += cu_die_name;
987 if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file))
988 cu_file_spec.SetFile (ramapped_file.c_str(), false);
989 else
990 cu_file_spec.SetFile (fullpath.c_str(), false);
991 }
992
993 cu_sp.reset(new CompileUnit (module_sp,
994 dwarf_cu,
995 cu_file_spec,
996 MakeUserID(dwarf_cu->GetOffset()),
997 cu_language));
998 if (cu_sp)
999 {
1000 dwarf_cu->SetUserData(cu_sp.get());
1001
1002 // Figure out the compile unit index if we weren't given one
1003 if (cu_idx == UINT32_MAX(4294967295U))
1004 DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
1005
1006 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
1007 }
1008 }
1009 }
1010 }
1011 }
1012 }
1013 }
1014 return cu_sp;
1015}
1016
1017uint32_t
1018SymbolFileDWARF::GetNumCompileUnits()
1019{
1020 DWARFDebugInfo* info = DebugInfo();
1021 if (info)
1022 return info->GetNumCompileUnits();
1023 return 0;
1024}
1025
1026CompUnitSP
1027SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx)
1028{
1029 CompUnitSP cu_sp;
1030 DWARFDebugInfo* info = DebugInfo();
1031 if (info)
1032 {
1033 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
1034 if (dwarf_cu)
1035 cu_sp = ParseCompileUnit(dwarf_cu, cu_idx);
1036 }
1037 return cu_sp;
1038}
1039
1040static void
1041AddRangesToBlock (Block& block,
1042 DWARFDebugRanges::RangeList& ranges,
1043 addr_t block_base_addr)
1044{
1045 const size_t num_ranges = ranges.GetSize();
1046 for (size_t i = 0; i<num_ranges; ++i)
1047 {
1048 const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i);
1049 const addr_t range_base = range.GetRangeBase();
1050 assert (range_base >= block_base_addr)((range_base >= block_base_addr) ? static_cast<void>
(0) : __assert_fail ("range_base >= block_base_addr", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1050, __PRETTY_FUNCTION__))
;
1051 block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));;
1052 }
1053 block.FinalizeRanges ();
1054}
1055
1056
1057Function *
1058SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die)
1059{
1060 DWARFDebugRanges::RangeList func_ranges;
1061 const char *name = NULL__null;
1062 const char *mangled = NULL__null;
1063 int decl_file = 0;
1064 int decl_line = 0;
1065 int decl_column = 0;
1066 int call_file = 0;
1067 int call_line = 0;
1068 int call_column = 0;
1069 DWARFExpression frame_base;
1070
1071 assert (die->Tag() == DW_TAG_subprogram)((die->Tag() == DW_TAG_subprogram) ? static_cast<void>
(0) : __assert_fail ("die->Tag() == DW_TAG_subprogram", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1071, __PRETTY_FUNCTION__))
;
1072
1073 if (die->Tag() != DW_TAG_subprogram)
1074 return NULL__null;
1075
1076 if (die->GetDIENamesAndRanges (this,
1077 dwarf_cu,
1078 name,
1079 mangled,
1080 func_ranges,
1081 decl_file,
1082 decl_line,
1083 decl_column,
1084 call_file,
1085 call_line,
1086 call_column,
1087 &frame_base))
1088 {
1089 // Union of all ranges in the function DIE (if the function is discontiguous)
1090 AddressRange func_range;
1091 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0);
1092 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0);
1093 if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) && lowest_func_addr <= highest_func_addr)
1094 {
1095 ModuleSP module_sp (m_obj_file->GetModule());
1096 func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList());
1097 if (func_range.GetBaseAddress().IsValid())
1098 func_range.SetByteSize(highest_func_addr - lowest_func_addr);
1099 }
1100
1101 if (func_range.GetBaseAddress().IsValid())
1102 {
1103 Mangled func_name;
1104 if (mangled)
1105 func_name.SetValue(ConstString(mangled), true);
1106 else if (name)
1107 func_name.SetValue(ConstString(name), false);
1108
1109 FunctionSP func_sp;
1110 std::unique_ptr<Declaration> decl_ap;
1111 if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1112 decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1113 decl_line,
1114 decl_column));
1115
1116 // Supply the type _only_ if it has already been parsed
1117 Type *func_type = m_die_to_type.lookup (die);
1118
1119 assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED)((func_type == __null || func_type != ((lldb_private::Type*)1
)) ? static_cast<void> (0) : __assert_fail ("func_type == __null || func_type != ((lldb_private::Type*)1)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1119, __PRETTY_FUNCTION__))
;
1120
1121 if (FixupAddress (func_range.GetBaseAddress()))
1122 {
1123 const user_id_t func_user_id = MakeUserID(die->GetOffset());
1124 func_sp.reset(new Function (sc.comp_unit,
1125 MakeUserID(func_user_id), // UserID is the DIE offset
1126 MakeUserID(func_user_id),
1127 func_name,
1128 func_type,
1129 func_range)); // first address range
1130
1131 if (func_sp.get() != NULL__null)
1132 {
1133 if (frame_base.IsValid())
1134 func_sp->GetFrameBaseExpression() = frame_base;
1135 sc.comp_unit->AddFunction(func_sp);
1136 return func_sp.get();
1137 }
1138 }
1139 }
1140 }
1141 return NULL__null;
1142}
1143
1144bool
1145SymbolFileDWARF::FixupAddress (Address &addr)
1146{
1147 SymbolFileDWARFDebugMap * debug_map_symfile = GetDebugMapSymfile ();
1148 if (debug_map_symfile)
1149 {
1150 return debug_map_symfile->LinkOSOAddress(addr);
1151 }
1152 // This is a normal DWARF file, no address fixups need to happen
1153 return true;
1154}
1155lldb::LanguageType
1156SymbolFileDWARF::ParseCompileUnitLanguage (const SymbolContext& sc)
1157{
1158 assert (sc.comp_unit)((sc.comp_unit) ? static_cast<void> (0) : __assert_fail
("sc.comp_unit", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1158, __PRETTY_FUNCTION__))
;
1159 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1160 if (dwarf_cu)
1161 {
1162 const DWARFDebugInfoEntry *die = dwarf_cu->GetCompileUnitDIEOnly();
1163 if (die)
1164 {
1165 const uint32_t language = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
1166 if (language)
1167 return (lldb::LanguageType)language;
1168 }
1169 }
1170 return eLanguageTypeUnknown;
1171}
1172
1173size_t
1174SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc)
1175{
1176 assert (sc.comp_unit)((sc.comp_unit) ? static_cast<void> (0) : __assert_fail
("sc.comp_unit", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1176, __PRETTY_FUNCTION__))
;
1177 size_t functions_added = 0;
1178 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1179 if (dwarf_cu)
1180 {
1181 DWARFDIECollection function_dies;
1182 const size_t num_functions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies);
1183 size_t func_idx;
1184 for (func_idx = 0; func_idx < num_functions; ++func_idx)
1185 {
1186 const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx);
1187 if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL__null)
1188 {
1189 if (ParseCompileUnitFunction(sc, dwarf_cu, die))
1190 ++functions_added;
1191 }
1192 }
1193 //FixupTypes();
1194 }
1195 return functions_added;
1196}
1197
1198bool
1199SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files)
1200{
1201 assert (sc.comp_unit)((sc.comp_unit) ? static_cast<void> (0) : __assert_fail
("sc.comp_unit", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1201, __PRETTY_FUNCTION__))
;
1202 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1203 if (dwarf_cu)
1204 {
1205 const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1206
1207 if (cu_die)
1208 {
1209 const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL__null);
1210
1211 // DWARF2/3 suggests the form hostname:pathname for compilation directory.
1212 // Remove the host part if present.
1213 cu_comp_dir = removeHostnameFromPathname(cu_comp_dir);
1214
1215 dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET(~(dw_offset_t)0));
1216
1217 // All file indexes in DWARF are one based and a file of index zero is
1218 // supposed to be the compile unit itself.
1219 support_files.Append (*sc.comp_unit);
1220
1221 return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
1222 }
1223 }
1224 return false;
1225}
1226
1227struct ParseDWARFLineTableCallbackInfo
1228{
1229 LineTable* line_table;
1230 std::unique_ptr<LineSequence> sequence_ap;
1231};
1232
1233//----------------------------------------------------------------------
1234// ParseStatementTableCallback
1235//----------------------------------------------------------------------
1236static void
1237ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData)
1238{
1239 if (state.row == DWARFDebugLine::State::StartParsingLineTable)
1240 {
1241 // Just started parsing the line table
1242 }
1243 else if (state.row == DWARFDebugLine::State::DoneParsingLineTable)
1244 {
1245 // Done parsing line table, nothing to do for the cleanup
1246 }
1247 else
1248 {
1249 ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData;
1250 LineTable* line_table = info->line_table;
1251
1252 // If this is our first time here, we need to create a
1253 // sequence container.
1254 if (!info->sequence_ap.get())
1255 {
1256 info->sequence_ap.reset(line_table->CreateLineSequenceContainer());
1257 assert(info->sequence_ap.get())((info->sequence_ap.get()) ? static_cast<void> (0) :
__assert_fail ("info->sequence_ap.get()", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1257, __PRETTY_FUNCTION__))
;
1258 }
1259 line_table->AppendLineEntryToSequence (info->sequence_ap.get(),
1260 state.address,
1261 state.line,
1262 state.column,
1263 state.file,
1264 state.is_stmt,
1265 state.basic_block,
1266 state.prologue_end,
1267 state.epilogue_begin,
1268 state.end_sequence);
1269 if (state.end_sequence)
1270 {
1271 // First, put the current sequence into the line table.
1272 line_table->InsertSequence(info->sequence_ap.get());
1273 // Then, empty it to prepare for the next sequence.
1274 info->sequence_ap->Clear();
1275 }
1276 }
1277}
1278
1279bool
1280SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc)
1281{
1282 assert (sc.comp_unit)((sc.comp_unit) ? static_cast<void> (0) : __assert_fail
("sc.comp_unit", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1282, __PRETTY_FUNCTION__))
;
1283 if (sc.comp_unit->GetLineTable() != NULL__null)
1284 return true;
1285
1286 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
1287 if (dwarf_cu)
1288 {
1289 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly();
1290 if (dwarf_cu_die)
1291 {
1292 const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET(~(dw_offset_t)0));
1293 if (cu_line_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
1294 {
1295 std::unique_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit));
1296 if (line_table_ap.get())
1297 {
1298 ParseDWARFLineTableCallbackInfo info;
1299 info.line_table = line_table_ap.get();
1300 lldb::offset_t offset = cu_line_offset;
1301 DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info);
1302 if (m_debug_map_symfile)
1303 {
1304 // We have an object file that has a line table with addresses
1305 // that are not linked. We need to link the line table and convert
1306 // the addresses that are relative to the .o file into addresses
1307 // for the main executable.
1308 sc.comp_unit->SetLineTable (m_debug_map_symfile->LinkOSOLineTable (this, line_table_ap.get()));
1309 }
1310 else
1311 {
1312 sc.comp_unit->SetLineTable(line_table_ap.release());
1313 return true;
1314 }
1315 }
1316 }
1317 }
1318 }
1319 return false;
1320}
1321
1322size_t
1323SymbolFileDWARF::ParseFunctionBlocks
1324(
1325 const SymbolContext& sc,
1326 Block *parent_block,
1327 DWARFCompileUnit* dwarf_cu,
1328 const DWARFDebugInfoEntry *die,
1329 addr_t subprogram_low_pc,
1330 uint32_t depth
1331)
1332{
1333 size_t blocks_added = 0;
1334 while (die != NULL__null)
1335 {
1336 dw_tag_t tag = die->Tag();
1337
1338 switch (tag)
1339 {
1340 case DW_TAG_inlined_subroutine:
1341 case DW_TAG_subprogram:
1342 case DW_TAG_lexical_block:
1343 {
1344 Block *block = NULL__null;
1345 if (tag == DW_TAG_subprogram)
1346 {
1347 // Skip any DW_TAG_subprogram DIEs that are inside
1348 // of a normal or inlined functions. These will be
1349 // parsed on their own as separate entities.
1350
1351 if (depth > 0)
1352 break;
1353
1354 block = parent_block;
1355 }
1356 else
1357 {
1358 BlockSP block_sp(new Block (MakeUserID(die->GetOffset())));
1359 parent_block->AddChild(block_sp);
1360 block = block_sp.get();
1361 }
1362 DWARFDebugRanges::RangeList ranges;
1363 const char *name = NULL__null;
1364 const char *mangled_name = NULL__null;
1365
1366 int decl_file = 0;
1367 int decl_line = 0;
1368 int decl_column = 0;
1369 int call_file = 0;
1370 int call_line = 0;
1371 int call_column = 0;
1372 if (die->GetDIENamesAndRanges (this,
1373 dwarf_cu,
1374 name,
1375 mangled_name,
1376 ranges,
1377 decl_file, decl_line, decl_column,
1378 call_file, call_line, call_column))
1379 {
1380 if (tag == DW_TAG_subprogram)
1381 {
1382 assert (subprogram_low_pc == LLDB_INVALID_ADDRESS)((subprogram_low_pc == (18446744073709551615UL)) ? static_cast
<void> (0) : __assert_fail ("subprogram_low_pc == (18446744073709551615UL)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 1382, __PRETTY_FUNCTION__))
;
1383 subprogram_low_pc = ranges.GetMinRangeBase(0);
1384 }
1385 else if (tag == DW_TAG_inlined_subroutine)
1386 {
1387 // We get called here for inlined subroutines in two ways.
1388 // The first time is when we are making the Function object
1389 // for this inlined concrete instance. Since we're creating a top level block at
1390 // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we need to
1391 // adjust the containing address.
1392 // The second time is when we are parsing the blocks inside the function that contains
1393 // the inlined concrete instance. Since these will be blocks inside the containing "real"
1394 // function the offset will be for that function.
1395 if (subprogram_low_pc == LLDB_INVALID_ADDRESS(18446744073709551615UL))
1396 {
1397 subprogram_low_pc = ranges.GetMinRangeBase(0);
1398 }
1399 }
1400
1401 AddRangesToBlock (*block, ranges, subprogram_low_pc);
1402
1403 if (tag != DW_TAG_subprogram && (name != NULL__null || mangled_name != NULL__null))
1404 {
1405 std::unique_ptr<Declaration> decl_ap;
1406 if (decl_file != 0 || decl_line != 0 || decl_column != 0)
1407 decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
1408 decl_line, decl_column));
1409
1410 std::unique_ptr<Declaration> call_ap;
1411 if (call_file != 0 || call_line != 0 || call_column != 0)
1412 call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file),
1413 call_line, call_column));
1414
1415 block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get());
1416 }
1417
1418 ++blocks_added;
1419
1420 if (die->HasChildren())
1421 {
1422 blocks_added += ParseFunctionBlocks (sc,
1423 block,
1424 dwarf_cu,
1425 die->GetFirstChild(),
1426 subprogram_low_pc,
1427 depth + 1);
1428 }
1429 }
1430 }
1431 break;
1432 default:
1433 break;
1434 }
1435
1436 // Only parse siblings of the block if we are not at depth zero. A depth
1437 // of zero indicates we are currently parsing the top level
1438 // DW_TAG_subprogram DIE
1439
1440 if (depth == 0)
1441 die = NULL__null;
1442 else
1443 die = die->GetSibling();
1444 }
1445 return blocks_added;
1446}
1447
1448bool
1449SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu,
1450 const DWARFDebugInfoEntry *die,
1451 ClangASTContext::TemplateParameterInfos &template_param_infos)
1452{
1453 const dw_tag_t tag = die->Tag();
1454
1455 switch (tag)
1456 {
1457 case DW_TAG_template_type_parameter:
1458 case DW_TAG_template_value_parameter:
1459 {
1460 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64());
1461
1462 DWARFDebugInfoEntry::Attributes attributes;
1463 const size_t num_attributes = die->GetAttributes (this,
1464 dwarf_cu,
1465 fixed_form_sizes,
1466 attributes);
1467 const char *name = NULL__null;
1468 Type *lldb_type = NULL__null;
1469 ClangASTType clang_type;
1470 uint64_t uval64 = 0;
1471 bool uval64_valid = false;
1472 if (num_attributes > 0)
1473 {
1474 DWARFFormValue form_value;
1475 for (size_t i=0; i<num_attributes; ++i)
1476 {
1477 const dw_attr_t attr = attributes.AttributeAtIndex(i);
1478
1479 switch (attr)
1480 {
1481 case DW_AT_name:
1482 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1483 name = form_value.AsCString(&get_debug_str_data());
1484 break;
1485
1486 case DW_AT_type:
1487 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1488 {
1489 const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu);
1490 lldb_type = ResolveTypeUID(type_die_offset);
1491 if (lldb_type)
1492 clang_type = lldb_type->GetClangForwardType();
1493 }
1494 break;
1495
1496 case DW_AT_const_value:
1497 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1498 {
1499 uval64_valid = true;
1500 uval64 = form_value.Unsigned();
1501 }
1502 break;
1503 default:
1504 break;
1505 }
1506 }
1507
1508 clang::ASTContext *ast = GetClangASTContext().getASTContext();
1509 if (!clang_type)
1510 clang_type = GetClangASTContext().GetBasicType(eBasicTypeVoid);
1511
1512 if (clang_type)
1513 {
1514 bool is_signed = false;
1515 if (name && name[0])
1516 template_param_infos.names.push_back(name);
1517 else
1518 template_param_infos.names.push_back(NULL__null);
1519
1520 if (tag == DW_TAG_template_value_parameter &&
1521 lldb_type != NULL__null &&
1522 clang_type.IsIntegerType (is_signed) &&
1523 uval64_valid)
1524 {
1525 llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed);
1526 template_param_infos.args.push_back (clang::TemplateArgument (*ast,
1527 llvm::APSInt(apint),
1528 clang_type.GetQualType()));
1529 }
1530 else
1531 {
1532 template_param_infos.args.push_back (clang::TemplateArgument (clang_type.GetQualType()));
1533 }
1534 }
1535 else
1536 {
1537 return false;
1538 }
1539
1540 }
1541 }
1542 return true;
1543
1544 default:
1545 break;
1546 }
1547 return false;
1548}
1549
1550bool
1551SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu,
1552 const DWARFDebugInfoEntry *parent_die,
1553 ClangASTContext::TemplateParameterInfos &template_param_infos)
1554{
1555
1556 if (parent_die == NULL__null)
1557 return false;
1558
1559 Args template_parameter_names;
1560 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild();
1561 die != NULL__null;
1562 die = die->GetSibling())
1563 {
1564 const dw_tag_t tag = die->Tag();
1565
1566 switch (tag)
1567 {
1568 case DW_TAG_template_type_parameter:
1569 case DW_TAG_template_value_parameter:
1570 ParseTemplateDIE (dwarf_cu, die, template_param_infos);
1571 break;
1572
1573 default:
1574 break;
1575 }
1576 }
1577 if (template_param_infos.args.empty())
1578 return false;
1579 return template_param_infos.args.size() == template_param_infos.names.size();
1580}
1581
1582clang::ClassTemplateDecl *
1583SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx,
1584 lldb::AccessType access_type,
1585 const char *parent_name,
1586 int tag_decl_kind,
1587 const ClangASTContext::TemplateParameterInfos &template_param_infos)
1588{
1589 if (template_param_infos.IsValid())
1590 {
1591 std::string template_basename(parent_name);
1592 template_basename.erase (template_basename.find('<'));
1593 ClangASTContext &ast = GetClangASTContext();
1594
1595 return ast.CreateClassTemplateDecl (decl_ctx,
1596 access_type,
1597 template_basename.c_str(),
1598 tag_decl_kind,
1599 template_param_infos);
1600 }
1601 return NULL__null;
1602}
1603
1604class SymbolFileDWARF::DelayedAddObjCClassProperty
1605{
1606public:
1607 DelayedAddObjCClassProperty
1608 (
1609 const ClangASTType &class_opaque_type,
1610 const char *property_name,
1611 const ClangASTType &property_opaque_type, // The property type is only required if you don't have an ivar decl
1612 clang::ObjCIvarDecl *ivar_decl,
1613 const char *property_setter_name,
1614 const char *property_getter_name,
1615 uint32_t property_attributes,
1616 const ClangASTMetadata *metadata
1617 ) :
1618 m_class_opaque_type (class_opaque_type),
1619 m_property_name (property_name),
1620 m_property_opaque_type (property_opaque_type),
1621 m_ivar_decl (ivar_decl),
1622 m_property_setter_name (property_setter_name),
1623 m_property_getter_name (property_getter_name),
1624 m_property_attributes (property_attributes)
1625 {
1626 if (metadata != NULL__null)
1627 {
1628 m_metadata_ap.reset(new ClangASTMetadata());
1629 *m_metadata_ap = *metadata;
1630 }
1631 }
1632
1633 DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs)
1634 {
1635 *this = rhs;
1636 }
1637
1638 DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs)
1639 {
1640 m_class_opaque_type = rhs.m_class_opaque_type;
1641 m_property_name = rhs.m_property_name;
1642 m_property_opaque_type = rhs.m_property_opaque_type;
1643 m_ivar_decl = rhs.m_ivar_decl;
1644 m_property_setter_name = rhs.m_property_setter_name;
1645 m_property_getter_name = rhs.m_property_getter_name;
1646 m_property_attributes = rhs.m_property_attributes;
1647
1648 if (rhs.m_metadata_ap.get())
1649 {
1650 m_metadata_ap.reset (new ClangASTMetadata());
1651 *m_metadata_ap = *rhs.m_metadata_ap;
1652 }
1653 return *this;
1654 }
1655
1656 bool
1657 Finalize()
1658 {
1659 return m_class_opaque_type.AddObjCClassProperty (m_property_name,
1660 m_property_opaque_type,
1661 m_ivar_decl,
1662 m_property_setter_name,
1663 m_property_getter_name,
1664 m_property_attributes,
1665 m_metadata_ap.get());
1666 }
1667private:
1668 ClangASTType m_class_opaque_type;
1669 const char *m_property_name;
1670 ClangASTType m_property_opaque_type;
1671 clang::ObjCIvarDecl *m_ivar_decl;
1672 const char *m_property_setter_name;
1673 const char *m_property_getter_name;
1674 uint32_t m_property_attributes;
1675 std::unique_ptr<ClangASTMetadata> m_metadata_ap;
1676};
1677
1678struct BitfieldInfo
1679{
1680 uint64_t bit_size;
1681 uint64_t bit_offset;
1682
1683 BitfieldInfo () :
1684 bit_size (LLDB_INVALID_ADDRESS(18446744073709551615UL)),
1685 bit_offset (LLDB_INVALID_ADDRESS(18446744073709551615UL))
1686 {
1687 }
1688
1689 void
1690 Clear()
1691 {
1692 bit_size = LLDB_INVALID_ADDRESS(18446744073709551615UL);
1693 bit_offset = LLDB_INVALID_ADDRESS(18446744073709551615UL);
1694 }
1695
1696 bool IsValid ()
1697 {
1698 return (bit_size != LLDB_INVALID_ADDRESS(18446744073709551615UL)) &&
1699 (bit_offset != LLDB_INVALID_ADDRESS(18446744073709551615UL));
1700 }
1701};
1702
1703
1704bool
1705SymbolFileDWARF::ClassOrStructIsVirtual (DWARFCompileUnit* dwarf_cu,
1706 const DWARFDebugInfoEntry *parent_die)
1707{
1708 if (parent_die)
1709 {
1710 for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); die != NULL__null; die = die->GetSibling())
1711 {
1712 dw_tag_t tag = die->Tag();
1713 bool check_virtuality = false;
1714 switch (tag)
1715 {
1716 case DW_TAG_inheritance:
1717 case DW_TAG_subprogram:
1718 check_virtuality = true;
1719 break;
1720 default:
1721 break;
1722 }
1723 if (check_virtuality)
1724 {
1725 if (die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_virtuality, 0) != 0)
1726 return true;
1727 }
1728 }
1729 }
1730 return false;
1731}
1732
1733size_t
1734SymbolFileDWARF::ParseChildMembers
1735(
1736 const SymbolContext& sc,
1737 DWARFCompileUnit* dwarf_cu,
1738 const DWARFDebugInfoEntry *parent_die,
1739 ClangASTType &class_clang_type,
1740 const LanguageType class_language,
1741 std::vector<clang::CXXBaseSpecifier *>& base_classes,
1742 std::vector<int>& member_accessibilities,
1743 DWARFDIECollection& member_function_dies,
1744 DelayedPropertyList& delayed_properties,
1745 AccessType& default_accessibility,
1746 bool &is_a_class,
1747 LayoutInfo &layout_info
1748)
1749{
1750 if (parent_die == NULL__null)
1751 return 0;
1752
1753 size_t count = 0;
1754 const DWARFDebugInfoEntry *die;
1755 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64());
1756 uint32_t member_idx = 0;
1757 BitfieldInfo last_field_info;
1758 ModuleSP module = GetObjectFile()->GetModule();
1759
1760 for (die = parent_die->GetFirstChild(); die != NULL__null; die = die->GetSibling())
1761 {
1762 dw_tag_t tag = die->Tag();
1763
1764 switch (tag)
1765 {
1766 case DW_TAG_member:
1767 case DW_TAG_APPLE_property:
1768 {
1769 DWARFDebugInfoEntry::Attributes attributes;
1770 const size_t num_attributes = die->GetAttributes (this,
1771 dwarf_cu,
1772 fixed_form_sizes,
1773 attributes);
1774 if (num_attributes > 0)
1775 {
1776 Declaration decl;
1777 //DWARFExpression location;
1778 const char *name = NULL__null;
1779 const char *prop_name = NULL__null;
1780 const char *prop_getter_name = NULL__null;
1781 const char *prop_setter_name = NULL__null;
1782 uint32_t prop_attributes = 0;
1783
1784
1785 bool is_artificial = false;
1786 lldb::user_id_t encoding_uid = LLDB_INVALID_UID(18446744073709551615UL);
1787 AccessType accessibility = eAccessNone;
1788 uint32_t member_byte_offset = UINT32_MAX(4294967295U);
1789 size_t byte_size = 0;
1790 size_t bit_offset = 0;
1791 size_t bit_size = 0;
1792 bool is_external = false; // On DW_TAG_members, this means the member is static
1793 uint32_t i;
1794 for (i=0; i<num_attributes && !is_artificial; ++i)
1795 {
1796 const dw_attr_t attr = attributes.AttributeAtIndex(i);
1797 DWARFFormValue form_value;
1798 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
1799 {
1800 switch (attr)
1801 {
1802 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
1803 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
1804 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
1805 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break;
1806 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break;
1807 case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break;
1808 case DW_AT_bit_size: bit_size = form_value.Unsigned(); break;
1809 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break;
1810 case DW_AT_data_member_location:
1811 if (form_value.BlockData())
1812 {
1813 Value initialValue(0);
1814 Value memberOffset(0);
1815 const DWARFDataExtractor& debug_info_data = get_debug_info_data();
1816 uint32_t block_length = form_value.Unsigned();
1817 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
1818 if (DWARFExpression::Evaluate(NULL__null, // ExecutionContext *
1819 NULL__null, // ClangExpressionVariableList *
1820 NULL__null, // ClangExpressionDeclMap *
1821 NULL__null, // RegisterContext *
1822 module,
1823 debug_info_data,
1824 block_offset,
1825 block_length,
1826 eRegisterKindDWARF,
1827 &initialValue,
1828 memberOffset,
1829 NULL__null))
1830 {
1831 member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt();
1832 }
1833 }
1834 else
1835 {
1836 // With DWARF 3 and later, if the value is an integer constant,
1837 // this form value is the offset in bytes from the beginning
1838 // of the containing entity.
1839 member_byte_offset = form_value.Unsigned();
1840 }
1841 break;
1842
1843 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break;
1844 case DW_AT_artificial: is_artificial = form_value.Boolean(); break;
1845 case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(&get_debug_str_data()); break;
1846 case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(&get_debug_str_data()); break;
1847 case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(&get_debug_str_data()); break;
1848 case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break;
1849 case DW_AT_external: is_external = form_value.Boolean(); break;
1850
1851 default:
1852 case DW_AT_declaration:
1853 case DW_AT_description:
1854 case DW_AT_mutable:
1855 case DW_AT_visibility:
1856 case DW_AT_sibling:
1857 break;
1858 }
1859 }
1860 }
1861
1862 if (prop_name)
1863 {
1864 ConstString fixed_getter;
1865 ConstString fixed_setter;
1866
1867 // Check if the property getter/setter were provided as full
1868 // names. We want basenames, so we extract them.
1869
1870 if (prop_getter_name && prop_getter_name[0] == '-')
1871 {
1872 ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true);
1873 prop_getter_name = prop_getter_method.GetSelector().GetCString();
1874 }
1875
1876 if (prop_setter_name && prop_setter_name[0] == '-')
1877 {
1878 ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true);
1879 prop_setter_name = prop_setter_method.GetSelector().GetCString();
1880 }
1881
1882 // If the names haven't been provided, they need to be
1883 // filled in.
1884
1885 if (!prop_getter_name)
1886 {
1887 prop_getter_name = prop_name;
1888 }
1889 if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly))
1890 {
1891 StreamString ss;
1892
1893 ss.Printf("set%c%s:",
1894 toupper(prop_name[0]),
1895 &prop_name[1]);
1896
1897 fixed_setter.SetCString(ss.GetData());
1898 prop_setter_name = fixed_setter.GetCString();
1899 }
1900 }
1901
1902 // Clang has a DWARF generation bug where sometimes it
1903 // represents fields that are references with bad byte size
1904 // and bit size/offset information such as:
1905 //
1906 // DW_AT_byte_size( 0x00 )
1907 // DW_AT_bit_size( 0x40 )
1908 // DW_AT_bit_offset( 0xffffffffffffffc0 )
1909 //
1910 // So check the bit offset to make sure it is sane, and if
1911 // the values are not sane, remove them. If we don't do this
1912 // then we will end up with a crash if we try to use this
1913 // type in an expression when clang becomes unhappy with its
1914 // recycled debug info.
1915
1916 if (bit_offset > 128)
1917 {
1918 bit_size = 0;
1919 bit_offset = 0;
1920 }
1921
1922 // FIXME: Make Clang ignore Objective-C accessibility for expressions
1923 if (class_language == eLanguageTypeObjC ||
1924 class_language == eLanguageTypeObjC_plus_plus)
1925 accessibility = eAccessNone;
1926
1927 if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name))
1928 {
1929 // Not all compilers will mark the vtable pointer
1930 // member as artificial (llvm-gcc). We can't have
1931 // the virtual members in our classes otherwise it
1932 // throws off all child offsets since we end up
1933 // having and extra pointer sized member in our
1934 // class layouts.
1935 is_artificial = true;
1936 }
1937
1938 // Handle static members
1939 if (is_external && member_byte_offset == UINT32_MAX(4294967295U))
1940 {
1941 Type *var_type = ResolveTypeUID(encoding_uid);
1942
1943 if (var_type)
1944 {
1945 if (accessibility == eAccessNone)
1946 accessibility = eAccessPublic;
1947 class_clang_type.AddVariableToRecordType (name,
1948 var_type->GetClangLayoutType(),
1949 accessibility);
1950 }
1951 break;
1952 }
1953
1954 if (is_artificial == false)
1955 {
1956 Type *member_type = ResolveTypeUID(encoding_uid);
1957
1958 clang::FieldDecl *field_decl = NULL__null;
1959 if (tag == DW_TAG_member)
1960 {
1961 if (member_type)
1962 {
1963 if (accessibility == eAccessNone)
1964 accessibility = default_accessibility;
1965 member_accessibilities.push_back(accessibility);
1966
1967 uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX(4294967295U) ? 0 : (member_byte_offset * 8));
1968 if (bit_size > 0)
1969 {
1970
1971 BitfieldInfo this_field_info;
1972 this_field_info.bit_offset = field_bit_offset;
1973 this_field_info.bit_size = bit_size;
1974
1975 /////////////////////////////////////////////////////////////
1976 // How to locate a field given the DWARF debug information
1977 //
1978 // AT_byte_size indicates the size of the word in which the
1979 // bit offset must be interpreted.
1980 //
1981 // AT_data_member_location indicates the byte offset of the
1982 // word from the base address of the structure.
1983 //
1984 // AT_bit_offset indicates how many bits into the word
1985 // (according to the host endianness) the low-order bit of
1986 // the field starts. AT_bit_offset can be negative.
1987 //
1988 // AT_bit_size indicates the size of the field in bits.
1989 /////////////////////////////////////////////////////////////
1990
1991 if (byte_size == 0)
1992 byte_size = member_type->GetByteSize();
1993
1994 if (GetObjectFile()->GetByteOrder() == eByteOrderLittle)
1995 {
1996 this_field_info.bit_offset += byte_size * 8;
1997 this_field_info.bit_offset -= (bit_offset + bit_size);
1998 }
1999 else
2000 {
2001 this_field_info.bit_offset += bit_offset;
2002 }
2003
2004 // Update the field bit offset we will report for layout
2005 field_bit_offset = this_field_info.bit_offset;
2006
2007 // If the member to be emitted did not start on a character boundary and there is
2008 // empty space between the last field and this one, then we need to emit an
2009 // anonymous member filling up the space up to its start. There are three cases
2010 // here:
2011 //
2012 // 1 If the previous member ended on a character boundary, then we can emit an
2013 // anonymous member starting at the most recent character boundary.
2014 //
2015 // 2 If the previous member did not end on a character boundary and the distance
2016 // from the end of the previous member to the current member is less than a
2017 // word width, then we can emit an anonymous member starting right after the
2018 // previous member and right before this member.
2019 //
2020 // 3 If the previous member did not end on a character boundary and the distance
2021 // from the end of the previous member to the current member is greater than
2022 // or equal a word width, then we act as in Case 1.
2023
2024 const uint64_t character_width = 8;
2025 const uint64_t word_width = 32;
2026
2027 // Objective-C has invalid DW_AT_bit_offset values in older versions
2028 // of clang, so we have to be careful and only insert unnamed bitfields
2029 // if we have a new enough clang.
2030 bool detect_unnamed_bitfields = true;
2031
2032 if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus)
2033 detect_unnamed_bitfields = dwarf_cu->Supports_unnamed_objc_bitfields ();
2034
2035 if (detect_unnamed_bitfields)
2036 {
2037 BitfieldInfo anon_field_info;
2038
2039 if ((this_field_info.bit_offset % character_width) != 0) // not char aligned
2040 {
2041 uint64_t last_field_end = 0;
2042
2043 if (last_field_info.IsValid())
2044 last_field_end = last_field_info.bit_offset + last_field_info.bit_size;
2045
2046 if (this_field_info.bit_offset != last_field_end)
2047 {
2048 if (((last_field_end % character_width) == 0) || // case 1
2049 (this_field_info.bit_offset - last_field_end >= word_width)) // case 3
2050 {
2051 anon_field_info.bit_size = this_field_info.bit_offset % character_width;
2052 anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size;
2053 }
2054 else // case 2
2055 {
2056 anon_field_info.bit_size = this_field_info.bit_offset - last_field_end;
2057 anon_field_info.bit_offset = last_field_end;
2058 }
2059 }
2060 }
2061
2062 if (anon_field_info.IsValid())
2063 {
2064 clang::FieldDecl *unnamed_bitfield_decl = class_clang_type.AddFieldToRecordType (NULL__null,
2065 GetClangASTContext().GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width),
2066 accessibility,
2067 anon_field_info.bit_size);
2068
2069 layout_info.field_offsets.insert(std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset));
2070 }
2071 }
2072 last_field_info = this_field_info;
2073 }
2074 else
2075 {
2076 last_field_info.Clear();
2077 }
2078
2079 ClangASTType member_clang_type = member_type->GetClangLayoutType();
2080
2081 {
2082 // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>).
2083 // If the current field is at the end of the structure, then there is definitely no room for extra
2084 // elements and we override the type to array[0].
2085
2086 ClangASTType member_array_element_type;
2087 uint64_t member_array_size;
2088 bool member_array_is_incomplete;
2089
2090 if (member_clang_type.IsArrayType(&member_array_element_type,
2091 &member_array_size,
2092 &member_array_is_incomplete) &&
2093 !member_array_is_incomplete)
2094 {
2095 uint64_t parent_byte_size = parent_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, UINT64_MAX(18446744073709551615UL));
2096
2097 if (member_byte_offset >= parent_byte_size)
2098 {
2099 if (member_array_size != 1)
2100 {
2101 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64"l" "x" ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x",
2102 MakeUserID(die->GetOffset()),
2103 name,
2104 encoding_uid,
2105 MakeUserID(parent_die->GetOffset()));
2106 }
2107
2108 member_clang_type = GetClangASTContext().CreateArrayType(member_array_element_type, 0, false);
2109 }
2110 }
2111 }
2112
2113 field_decl = class_clang_type.AddFieldToRecordType (name,
2114 member_clang_type,
2115 accessibility,
2116 bit_size);
2117
2118 GetClangASTContext().SetMetadataAsUserID (field_decl, MakeUserID(die->GetOffset()));
2119
2120 layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset));
2121
2122 }
2123 else
2124 {
2125 if (name)
2126 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64"l" "x" ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" " which was unable to be parsed",
2127 MakeUserID(die->GetOffset()),
2128 name,
2129 encoding_uid);
2130 else
2131 GetObjectFile()->GetModule()->ReportError ("0x%8.8" PRIx64"l" "x" ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x" " which was unable to be parsed",
2132 MakeUserID(die->GetOffset()),
2133 encoding_uid);
2134 }
2135 }
2136
2137 if (prop_name != NULL__null)
2138 {
2139 clang::ObjCIvarDecl *ivar_decl = NULL__null;
2140
2141 if (field_decl)
2142 {
2143 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
2144 assert (ivar_decl != NULL)((ivar_decl != __null) ? static_cast<void> (0) : __assert_fail
("ivar_decl != __null", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 2144, __PRETTY_FUNCTION__))
;
2145 }
2146
2147 ClangASTMetadata metadata;
2148 metadata.SetUserID (MakeUserID(die->GetOffset()));
2149 delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type,
2150 prop_name,
2151 member_type->GetClangLayoutType(),
2152 ivar_decl,
2153 prop_setter_name,
2154 prop_getter_name,
2155 prop_attributes,
2156 &metadata));
2157
2158 if (ivar_decl)
2159 GetClangASTContext().SetMetadataAsUserID (ivar_decl, MakeUserID(die->GetOffset()));
2160 }
2161 }
2162 }
2163 ++member_idx;
2164 }
2165 break;
2166
2167 case DW_TAG_subprogram:
2168 // Let the type parsing code handle this one for us.
2169 member_function_dies.Append (die);
2170 break;
2171
2172 case DW_TAG_inheritance:
2173 {
2174 is_a_class = true;
2175 if (default_accessibility == eAccessNone)
2176 default_accessibility = eAccessPrivate;
2177 // TODO: implement DW_TAG_inheritance type parsing
2178 DWARFDebugInfoEntry::Attributes attributes;
2179 const size_t num_attributes = die->GetAttributes (this,
2180 dwarf_cu,
2181 fixed_form_sizes,
2182 attributes);
2183 if (num_attributes > 0)
2184 {
2185 Declaration decl;
2186 DWARFExpression location;
2187 lldb::user_id_t encoding_uid = LLDB_INVALID_UID(18446744073709551615UL);
2188 AccessType accessibility = default_accessibility;
2189 bool is_virtual = false;
2190 bool is_base_of_class = true;
2191 off_t member_byte_offset = 0;
2192 uint32_t i;
2193 for (i=0; i<num_attributes; ++i)
2194 {
2195 const dw_attr_t attr = attributes.AttributeAtIndex(i);
2196 DWARFFormValue form_value;
2197 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
2198 {
2199 switch (attr)
2200 {
2201 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
2202 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
2203 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
2204 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break;
2205 case DW_AT_data_member_location:
2206 if (form_value.BlockData())
2207 {
2208 Value initialValue(0);
2209 Value memberOffset(0);
2210 const DWARFDataExtractor& debug_info_data = get_debug_info_data();
2211 uint32_t block_length = form_value.Unsigned();
2212 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
2213 if (DWARFExpression::Evaluate (NULL__null,
2214 NULL__null,
2215 NULL__null,
2216 NULL__null,
2217 module,
2218 debug_info_data,
2219 block_offset,
2220 block_length,
2221 eRegisterKindDWARF,
2222 &initialValue,
2223 memberOffset,
2224 NULL__null))
2225 {
2226 member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt();
2227 }
2228 }
2229 else
2230 {
2231 // With DWARF 3 and later, if the value is an integer constant,
2232 // this form value is the offset in bytes from the beginning
2233 // of the containing entity.
2234 member_byte_offset = form_value.Unsigned();
2235 }
2236 break;
2237
2238 case DW_AT_accessibility:
2239 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2240 break;
2241
2242 case DW_AT_virtuality:
2243 is_virtual = form_value.Boolean();
2244 break;
2245
2246 case DW_AT_sibling:
2247 break;
2248
2249 default:
2250 break;
2251 }
2252 }
2253 }
2254
2255 Type *base_class_type = ResolveTypeUID(encoding_uid);
2256 assert(base_class_type)((base_class_type) ? static_cast<void> (0) : __assert_fail
("base_class_type", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 2256, __PRETTY_FUNCTION__))
;
2257
2258 ClangASTType base_class_clang_type = base_class_type->GetClangFullType();
2259 assert (base_class_clang_type)((base_class_clang_type) ? static_cast<void> (0) : __assert_fail
("base_class_clang_type", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 2259, __PRETTY_FUNCTION__))
;
2260 if (class_language == eLanguageTypeObjC)
2261 {
2262 class_clang_type.SetObjCSuperClass(base_class_clang_type);
2263 }
2264 else
2265 {
2266 base_classes.push_back (base_class_clang_type.CreateBaseClassSpecifier (accessibility,
2267 is_virtual,
2268 is_base_of_class));
2269
2270 if (is_virtual)
2271 {
2272 // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't
2273 // give us a constant offset, but gives us a DWARF expressions that requires an actual object
2274 // in memory. the DW_AT_data_member_location for a virtual base class looks like:
2275 // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus )
2276 // Given this, there is really no valid response we can give to clang for virtual base
2277 // class offsets, and this should eventually be removed from LayoutRecordType() in the external
2278 // AST source in clang.
2279 }
2280 else
2281 {
2282 layout_info.base_offsets.insert(std::make_pair(base_class_clang_type.GetAsCXXRecordDecl(),
2283 clang::CharUnits::fromQuantity(member_byte_offset)));
2284 }
2285 }
2286 }
2287 }
2288 break;
2289
2290 default:
2291 break;
2292 }
2293 }
2294
2295 return count;
2296}
2297
2298
2299clang::DeclContext*
2300SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid)
2301{
2302 DWARFDebugInfo* debug_info = DebugInfo();
2303 if (debug_info && UserIDMatches(type_uid))
2304 {
2305 DWARFCompileUnitSP cu_sp;
2306 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2307 if (die)
2308 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL__null);
2309 }
2310 return NULL__null;
2311}
2312
2313clang::DeclContext*
2314SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid)
2315{
2316 if (UserIDMatches(type_uid))
2317 return GetClangDeclContextForDIEOffset (sc, type_uid);
2318 return NULL__null;
2319}
2320
2321Type*
2322SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
2323{
2324 if (UserIDMatches(type_uid))
2325 {
2326 DWARFDebugInfo* debug_info = DebugInfo();
2327 if (debug_info)
2328 {
2329 DWARFCompileUnitSP cu_sp;
2330 const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp);
2331 const bool assert_not_being_parsed = true;
2332 return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed);
2333 }
2334 }
2335 return NULL__null;
2336}
2337
2338Type*
2339SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed)
2340{
2341 if (die != NULL__null)
2342 {
2343 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO(1u << 1)));
2344 if (log)
2345 GetObjectFile()->GetModule()->LogMessage (log,
2346 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
2347 die->GetOffset(),
2348 DW_TAG_value_to_name(die->Tag()),
2349 die->GetName(this, cu));
2350
2351 // We might be coming in in the middle of a type tree (a class
2352 // withing a class, an enum within a class), so parse any needed
2353 // parent DIEs before we get to this one...
2354 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
2355 switch (decl_ctx_die->Tag())
2356 {
2357 case DW_TAG_structure_type:
2358 case DW_TAG_union_type:
2359 case DW_TAG_class_type:
2360 {
2361 // Get the type, which could be a forward declaration
2362 if (log)
2363 GetObjectFile()->GetModule()->LogMessage (log,
2364 "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x",
2365 die->GetOffset(),
2366 DW_TAG_value_to_name(die->Tag()),
2367 die->GetName(this, cu),
2368 decl_ctx_die->GetOffset());
2369//
2370// Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed);
2371// if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag()))
2372// {
2373// if (log)
2374// GetObjectFile()->GetModule()->LogMessage (log,
2375// "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function",
2376// die->GetOffset(),
2377// DW_TAG_value_to_name(die->Tag()),
2378// die->GetName(this, cu),
2379// decl_ctx_die->GetOffset());
2380// // Ask the type to complete itself if it already hasn't since if we
2381// // want a function (method or static) from a class, the class must
2382// // create itself and add it's own methods and class functions.
2383// if (parent_type)
2384// parent_type->GetClangFullType();
2385// }
2386 }
2387 break;
2388
2389 default:
2390 break;
2391 }
2392 return ResolveType (cu, die);
2393 }
2394 return NULL__null;
2395}
2396
2397// This function is used when SymbolFileDWARFDebugMap owns a bunch of
2398// SymbolFileDWARF objects to detect if this DWARF file is the one that
2399// can resolve a clang_type.
2400bool
2401SymbolFileDWARF::HasForwardDeclForClangType (const ClangASTType &clang_type)
2402{
2403 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2404 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2405 return die != NULL__null;
2406}
2407
2408
2409bool
2410SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (ClangASTType &clang_type)
2411{
2412 // We have a struct/union/class/enum that needs to be fully resolved.
2413 ClangASTType clang_type_no_qualifiers = clang_type.RemoveFastQualifiers();
2414 const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers.GetOpaqueQualType());
2415 if (die == NULL__null)
2416 {
2417 // We have already resolved this type...
2418 return true;
2419 }
2420 // Once we start resolving this type, remove it from the forward declaration
2421 // map in case anyone child members or other types require this type to get resolved.
2422 // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition
2423 // are done.
2424 m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers.GetOpaqueQualType());
2425
2426 // Disable external storage for this type so we don't get anymore
2427 // clang::ExternalASTSource queries for this type.
2428 clang_type.SetHasExternalStorage (false);
2429
2430 DWARFDebugInfo* debug_info = DebugInfo();
2431
2432 DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get();
2433 Type *type = m_die_to_type.lookup (die);
2434
2435 const dw_tag_t tag = die->Tag();
2436
2437 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO(1u << 1)|DWARF_LOG_TYPE_COMPLETION(1u << 7)));
2438 if (log)
2439 GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log,
2440 "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...",
2441 MakeUserID(die->GetOffset()),
2442 DW_TAG_value_to_name(tag),
2443 type->GetName().AsCString());
2444 assert (clang_type)((clang_type) ? static_cast<void> (0) : __assert_fail (
"clang_type", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 2444, __PRETTY_FUNCTION__))
;
2445 DWARFDebugInfoEntry::Attributes attributes;
2446
2447 switch (tag)
2448 {
2449 case DW_TAG_structure_type:
2450 case DW_TAG_union_type:
2451 case DW_TAG_class_type:
2452 {
2453 LayoutInfo layout_info;
2454
2455 {
2456 if (die->HasChildren())
2457 {
2458 LanguageType class_language = eLanguageTypeUnknown;
2459 if (clang_type.IsObjCObjectOrInterfaceType())
2460 {
2461 class_language = eLanguageTypeObjC;
2462 // For objective C we don't start the definition when
2463 // the class is created.
2464 clang_type.StartTagDeclarationDefinition ();
2465 }
2466
2467 int tag_decl_kind = -1;
2468 AccessType default_accessibility = eAccessNone;
2469 if (tag == DW_TAG_structure_type)
2470 {
2471 tag_decl_kind = clang::TTK_Struct;
2472 default_accessibility = eAccessPublic;
2473 }
2474 else if (tag == DW_TAG_union_type)
2475 {
2476 tag_decl_kind = clang::TTK_Union;
2477 default_accessibility = eAccessPublic;
2478 }
2479 else if (tag == DW_TAG_class_type)
2480 {
2481 tag_decl_kind = clang::TTK_Class;
2482 default_accessibility = eAccessPrivate;
2483 }
2484
2485 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2486 std::vector<clang::CXXBaseSpecifier *> base_classes;
2487 std::vector<int> member_accessibilities;
2488 bool is_a_class = false;
2489 // Parse members and base classes first
2490 DWARFDIECollection member_function_dies;
2491
2492 DelayedPropertyList delayed_properties;
2493 ParseChildMembers (sc,
2494 dwarf_cu,
2495 die,
2496 clang_type,
2497 class_language,
2498 base_classes,
2499 member_accessibilities,
2500 member_function_dies,
2501 delayed_properties,
2502 default_accessibility,
2503 is_a_class,
2504 layout_info);
2505
2506 // Now parse any methods if there were any...
2507 size_t num_functions = member_function_dies.Size();
2508 if (num_functions > 0)
2509 {
2510 for (size_t i=0; i<num_functions; ++i)
2511 {
2512 ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i));
2513 }
2514 }
2515
2516 if (class_language == eLanguageTypeObjC)
2517 {
2518 ConstString class_name (clang_type.GetTypeName());
2519 if (class_name)
2520 {
2521 DIEArray method_die_offsets;
2522 if (m_using_apple_tables)
2523 {
2524 if (m_apple_objc_ap.get())
2525 m_apple_objc_ap->FindByName(class_name.GetCString(), method_die_offsets);
2526 }
2527 else
2528 {
2529 if (!m_indexed)
2530 Index ();
2531
2532 m_objc_class_selectors_index.Find (class_name, method_die_offsets);
2533 }
2534
2535 if (!method_die_offsets.empty())
2536 {
2537 DWARFDebugInfo* debug_info = DebugInfo();
2538
2539 DWARFCompileUnit* method_cu = NULL__null;
2540 const size_t num_matches = method_die_offsets.size();
2541 for (size_t i=0; i<num_matches; ++i)
2542 {
2543 const dw_offset_t die_offset = method_die_offsets[i];
2544 DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu);
2545
2546 if (method_die)
2547 ResolveType (method_cu, method_die);
2548 else
2549 {
2550 if (m_using_apple_tables)
2551 {
2552 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n",
2553 die_offset, class_name.GetCString());
2554 }
2555 }
2556 }
2557 }
2558
2559 for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end();
2560 pi != pe;
2561 ++pi)
2562 pi->Finalize();
2563 }
2564 }
2565
2566 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2567 // need to tell the clang type it is actually a class.
2568 if (class_language != eLanguageTypeObjC)
2569 {
2570 if (is_a_class && tag_decl_kind != clang::TTK_Class)
2571 clang_type.SetTagTypeKind (clang::TTK_Class);
2572 }
2573
2574 // Since DW_TAG_structure_type gets used for both classes
2575 // and structures, we may need to set any DW_TAG_member
2576 // fields to have a "private" access if none was specified.
2577 // When we parsed the child members we tracked that actual
2578 // accessibility value for each DW_TAG_member in the
2579 // "member_accessibilities" array. If the value for the
2580 // member is zero, then it was set to the "default_accessibility"
2581 // which for structs was "public". Below we correct this
2582 // by setting any fields to "private" that weren't correctly
2583 // set.
2584 if (is_a_class && !member_accessibilities.empty())
2585 {
2586 // This is a class and all members that didn't have
2587 // their access specified are private.
2588 clang_type.SetDefaultAccessForRecordFields (eAccessPrivate,
2589 &member_accessibilities.front(),
2590 member_accessibilities.size());
2591 }
2592
2593 if (!base_classes.empty())
2594 {
2595 // Make sure all base classes refer to complete types and not
2596 // forward declarations. If we don't do this, clang will crash
2597 // with an assertion in the call to clang_type.SetBaseClassesForClassType()
2598 bool base_class_error = false;
2599 for (auto &base_class : base_classes)
2600 {
2601 clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo();
2602 if (type_source_info)
2603 {
2604 ClangASTType base_class_type (GetClangASTContext().getASTContext(), type_source_info->getType());
2605 if (base_class_type.GetCompleteType() == false)
2606 {
2607 if (!base_class_error)
2608 {
2609 GetObjectFile()->GetModule()->ReportError ("DWARF DIE at 0x%8.8x for class '%s' has a base class '%s' that is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s",
2610 die->GetOffset(),
2611 die->GetName(this, dwarf_cu),
2612 base_class_type.GetTypeName().GetCString(),
2613 sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file");
2614 }
2615 // We have no choice other than to pretend that the base class
2616 // is complete. If we don't do this, clang will crash when we
2617 // call setBases() inside of "clang_type.SetBaseClassesForClassType()"
2618 // below. Since we provide layout assistance, all ivars in this
2619 // class and other classes will be fine, this is the best we can do
2620 // short of crashing.
2621 base_class_type.StartTagDeclarationDefinition ();
2622 base_class_type.CompleteTagDeclarationDefinition ();
2623 }
2624 }
2625 }
2626 clang_type.SetBaseClassesForClassType (&base_classes.front(),
2627 base_classes.size());
2628
2629 // Clang will copy each CXXBaseSpecifier in "base_classes"
2630 // so we have to free them all.
2631 ClangASTType::DeleteBaseClassSpecifiers (&base_classes.front(),
2632 base_classes.size());
2633 }
2634 }
2635 }
2636
2637 clang_type.BuildIndirectFields ();
2638 clang_type.CompleteTagDeclarationDefinition ();
2639
2640 if (!layout_info.field_offsets.empty() ||
2641 !layout_info.base_offsets.empty() ||
2642 !layout_info.vbase_offsets.empty() )
2643 {
2644 if (type)
2645 layout_info.bit_size = type->GetByteSize() * 8;
2646 if (layout_info.bit_size == 0)
2647 layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8;
2648
2649 clang::CXXRecordDecl *record_decl = clang_type.GetAsCXXRecordDecl();
2650 if (record_decl)
2651 {
2652 if (log)
2653 {
2654 GetObjectFile()->GetModule()->LogMessage (log,
2655 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u" ", alignment = %" PRIu64"l" "u" ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])",
2656 static_cast<void*>(clang_type.GetOpaqueQualType()),
2657 static_cast<void*>(record_decl),
2658 layout_info.bit_size,
2659 layout_info.alignment,
2660 static_cast<uint32_t>(layout_info.field_offsets.size()),
2661 static_cast<uint32_t>(layout_info.base_offsets.size()),
2662 static_cast<uint32_t>(layout_info.vbase_offsets.size()));
2663
2664 uint32_t idx;
2665 {
2666 llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end();
2667 for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx)
2668 {
2669 GetObjectFile()->GetModule()->LogMessage (log,
2670 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }",
2671 static_cast<void*>(clang_type.GetOpaqueQualType()),
2672 idx,
2673 static_cast<uint32_t>(pos->second),
2674 pos->first->getNameAsString().c_str());
2675 }
2676 }
2677
2678 {
2679 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, base_end = layout_info.base_offsets.end();
2680 for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx)
2681 {
2682 GetObjectFile()->GetModule()->LogMessage (log,
2683 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }",
2684 clang_type.GetOpaqueQualType(),
2685 idx,
2686 (uint32_t)base_pos->second.getQuantity(),
2687 base_pos->first->getNameAsString().c_str());
2688 }
2689 }
2690 {
2691 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, vbase_end = layout_info.vbase_offsets.end();
2692 for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx)
2693 {
2694 GetObjectFile()->GetModule()->LogMessage (log,
2695 "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }",
2696 static_cast<void*>(clang_type.GetOpaqueQualType()),
2697 idx,
2698 static_cast<uint32_t>(vbase_pos->second.getQuantity()),
2699 vbase_pos->first->getNameAsString().c_str());
2700 }
2701 }
2702 }
2703 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
2704 }
2705 }
2706 }
2707
2708 return (bool)clang_type;
2709
2710 case DW_TAG_enumeration_type:
2711 clang_type.StartTagDeclarationDefinition ();
2712 if (die->HasChildren())
2713 {
2714 SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
2715 bool is_signed = false;
2716 clang_type.IsIntegerType(is_signed);
2717 ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), dwarf_cu, die);
2718 }
2719 clang_type.CompleteTagDeclarationDefinition ();
2720 return (bool)clang_type;
2721
2722 default:
2723 assert(false && "not a forward clang type decl!")((false && "not a forward clang type decl!") ? static_cast
<void> (0) : __assert_fail ("false && \"not a forward clang type decl!\""
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 2723, __PRETTY_FUNCTION__))
;
2724 break;
2725 }
2726 return false;
2727}
2728
2729Type*
2730SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed)
2731{
2732 if (type_die != NULL__null)
2733 {
2734 Type *type = m_die_to_type.lookup (type_die);
2735
2736 if (type == NULL__null)
2737 type = GetTypeForDIE (dwarf_cu, type_die).get();
2738
2739 if (assert_not_being_parsed)
2740 {
2741 if (type != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
2742 return type;
2743
2744 GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s",
2745 type_die->GetOffset(),
2746 DW_TAG_value_to_name(type_die->Tag()),
2747 type_die->GetName(this, dwarf_cu));
2748
2749 }
2750 else
2751 return type;
2752 }
2753 return NULL__null;
2754}
2755
2756CompileUnit*
2757SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
2758{
2759 // Check if the symbol vendor already knows about this compile unit?
2760 if (dwarf_cu->GetUserData() == NULL__null)
2761 {
2762 // The symbol vendor doesn't know about this compile unit, we
2763 // need to parse and add it to the symbol vendor object.
2764 return ParseCompileUnit(dwarf_cu, cu_idx).get();
2765 }
2766 return (CompileUnit*)dwarf_cu->GetUserData();
2767}
2768
2769bool
2770SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc)
2771{
2772 sc.Clear(false);
2773 // Check if the symbol vendor already knows about this compile unit?
2774 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX(4294967295U));
2775
2776 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get();
2777 if (sc.function == NULL__null)
2778 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die);
2779
2780 if (sc.function)
2781 {
2782 sc.module_sp = sc.function->CalculateSymbolContextModule();
2783 return true;
2784 }
2785
2786 return false;
2787}
2788
2789uint32_t
2790SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
2791{
2792 Timer scoped_timer(__PRETTY_FUNCTION__,
2793 "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%" PRIx64"l" "x" " }, resolve_scope = 0x%8.8x)",
2794 static_cast<void*>(so_addr.GetSection().get()),
2795 so_addr.GetOffset(), resolve_scope);
2796 uint32_t resolved = 0;
2797 if (resolve_scope & ( eSymbolContextCompUnit |
2798 eSymbolContextFunction |
2799 eSymbolContextBlock |
2800 eSymbolContextLineEntry))
2801 {
2802 lldb::addr_t file_vm_addr = so_addr.GetFileAddress();
2803
2804 DWARFDebugInfo* debug_info = DebugInfo();
2805 if (debug_info)
2806 {
2807 const dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr);
2808 if (cu_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
2809 {
2810 uint32_t cu_idx = DW_INVALID_INDEX0xFFFFFFFFul;
2811 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get();
2812 if (dwarf_cu)
2813 {
2814 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2815 if (sc.comp_unit)
2816 {
2817 resolved |= eSymbolContextCompUnit;
2818
2819 bool force_check_line_table = false;
2820 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2821 {
2822 DWARFDebugInfoEntry *function_die = NULL__null;
2823 DWARFDebugInfoEntry *block_die = NULL__null;
2824 if (resolve_scope & eSymbolContextBlock)
2825 {
2826 dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die);
2827 }
2828 else
2829 {
2830 dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL__null);
2831 }
2832
2833 if (function_die != NULL__null)
2834 {
2835 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2836 if (sc.function == NULL__null)
2837 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2838 }
2839 else
2840 {
2841 // We might have had a compile unit that had discontiguous
2842 // address ranges where the gaps are symbols that don't have
2843 // any debug info. Discontiguous compile unit address ranges
2844 // should only happen when there aren't other functions from
2845 // other compile units in these gaps. This helps keep the size
2846 // of the aranges down.
2847 force_check_line_table = true;
2848 }
2849
2850 if (sc.function != NULL__null)
2851 {
2852 resolved |= eSymbolContextFunction;
2853
2854 if (resolve_scope & eSymbolContextBlock)
2855 {
2856 Block& block = sc.function->GetBlock (true);
2857
2858 if (block_die != NULL__null)
2859 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2860 else
2861 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2862 if (sc.block)
2863 resolved |= eSymbolContextBlock;
2864 }
2865 }
2866 }
2867
2868 if ((resolve_scope & eSymbolContextLineEntry) || force_check_line_table)
2869 {
2870 LineTable *line_table = sc.comp_unit->GetLineTable();
2871 if (line_table != NULL__null)
2872 {
2873 // And address that makes it into this function should be in terms
2874 // of this debug file if there is no debug map, or it will be an
2875 // address in the .o file which needs to be fixed up to be in terms
2876 // of the debug map executable. Either way, calling FixupAddress()
2877 // will work for us.
2878 Address exe_so_addr (so_addr);
2879 if (FixupAddress(exe_so_addr))
2880 {
2881 if (line_table->FindLineEntryByAddress (exe_so_addr, sc.line_entry))
2882 {
2883 resolved |= eSymbolContextLineEntry;
2884 }
2885 }
2886 }
2887 }
2888
2889 if (force_check_line_table && !(resolved & eSymbolContextLineEntry))
2890 {
2891 // We might have had a compile unit that had discontiguous
2892 // address ranges where the gaps are symbols that don't have
2893 // any debug info. Discontiguous compile unit address ranges
2894 // should only happen when there aren't other functions from
2895 // other compile units in these gaps. This helps keep the size
2896 // of the aranges down.
2897 sc.comp_unit = NULL__null;
2898 resolved &= ~eSymbolContextCompUnit;
2899 }
2900 }
2901 else
2902 {
2903 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8x: compile unit %u failed to create a valid lldb_private::CompileUnit class.",
2904 cu_offset,
2905 cu_idx);
2906 }
2907 }
2908 }
2909 }
2910 }
2911 return resolved;
2912}
2913
2914
2915
2916uint32_t
2917SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
2918{
2919 const uint32_t prev_size = sc_list.GetSize();
2920 if (resolve_scope & eSymbolContextCompUnit)
2921 {
2922 DWARFDebugInfo* debug_info = DebugInfo();
2923 if (debug_info)
2924 {
2925 uint32_t cu_idx;
2926 DWARFCompileUnit* dwarf_cu = NULL__null;
2927
2928 for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL__null; ++cu_idx)
2929 {
2930 CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2931 const bool full_match = (bool)file_spec.GetDirectory();
2932 bool file_spec_matches_cu_file_spec = dc_cu != NULL__null && FileSpec::Equal(file_spec, *dc_cu, full_match);
2933 if (check_inlines || file_spec_matches_cu_file_spec)
2934 {
2935 SymbolContext sc (m_obj_file->GetModule());
2936 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
2937 if (sc.comp_unit)
2938 {
2939 uint32_t file_idx = UINT32_MAX(4294967295U);
2940
2941 // If we are looking for inline functions only and we don't
2942 // find it in the support files, we are done.
2943 if (check_inlines)
2944 {
2945 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2946 if (file_idx == UINT32_MAX(4294967295U))
2947 continue;
2948 }
2949
2950 if (line != 0)
2951 {
2952 LineTable *line_table = sc.comp_unit->GetLineTable();
2953
2954 if (line_table != NULL__null && line != 0)
2955 {
2956 // We will have already looked up the file index if
2957 // we are searching for inline entries.
2958 if (!check_inlines)
2959 file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
2960
2961 if (file_idx != UINT32_MAX(4294967295U))
2962 {
2963 uint32_t found_line;
2964 uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry);
2965 found_line = sc.line_entry.line;
2966
2967 while (line_idx != UINT32_MAX(4294967295U))
2968 {
2969 sc.function = NULL__null;
2970 sc.block = NULL__null;
2971 if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
2972 {
2973 const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress();
2974 if (file_vm_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL))
2975 {
2976 DWARFDebugInfoEntry *function_die = NULL__null;
2977 DWARFDebugInfoEntry *block_die = NULL__null;
2978 dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL__null);
2979
2980 if (function_die != NULL__null)
2981 {
2982 sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
2983 if (sc.function == NULL__null)
2984 sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
2985 }
2986
2987 if (sc.function != NULL__null)
2988 {
2989 Block& block = sc.function->GetBlock (true);
2990
2991 if (block_die != NULL__null)
2992 sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
2993 else
2994 sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
2995 }
2996 }
2997 }
2998
2999 sc_list.Append(sc);
3000 line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry);
3001 }
3002 }
3003 }
3004 else if (file_spec_matches_cu_file_spec && !check_inlines)
3005 {
3006 // only append the context if we aren't looking for inline call sites
3007 // by file and line and if the file spec matches that of the compile unit
3008 sc_list.Append(sc);
3009 }
3010 }
3011 else if (file_spec_matches_cu_file_spec && !check_inlines)
3012 {
3013 // only append the context if we aren't looking for inline call sites
3014 // by file and line and if the file spec matches that of the compile unit
3015 sc_list.Append(sc);
3016 }
3017
3018 if (!check_inlines)
3019 break;
3020 }
3021 }
3022 }
3023 }
3024 }
3025 return sc_list.GetSize() - prev_size;
3026}
3027
3028void
3029SymbolFileDWARF::Index ()
3030{
3031 if (m_indexed)
3032 return;
3033 m_indexed = true;
3034 Timer scoped_timer (__PRETTY_FUNCTION__,
3035 "SymbolFileDWARF::Index (%s)",
3036 GetObjectFile()->GetFileSpec().GetFilename().AsCString());
3037
3038 DWARFDebugInfo* debug_info = DebugInfo();
3039 if (debug_info)
3040 {
3041 uint32_t cu_idx = 0;
3042 const uint32_t num_compile_units = GetNumCompileUnits();
3043 for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
3044 {
3045 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
3046
3047 bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1;
3048
3049 dwarf_cu->Index (cu_idx,
3050 m_function_basename_index,
3051 m_function_fullname_index,
3052 m_function_method_index,
3053 m_function_selector_index,
3054 m_objc_class_selectors_index,
3055 m_global_index,
3056 m_type_index,
3057 m_namespace_index);
3058
3059 // Keep memory down by clearing DIEs if this generate function
3060 // caused them to be parsed
3061 if (clear_dies)
3062 dwarf_cu->ClearDIEs (true);
3063 }
3064
3065 m_function_basename_index.Finalize();
3066 m_function_fullname_index.Finalize();
3067 m_function_method_index.Finalize();
3068 m_function_selector_index.Finalize();
3069 m_objc_class_selectors_index.Finalize();
3070 m_global_index.Finalize();
3071 m_type_index.Finalize();
3072 m_namespace_index.Finalize();
3073
3074#if defined (ENABLE_DEBUG_PRINTF)
3075 StreamFile s(stdoutstdout, false);
3076 s.Printf ("DWARF index for '%s':",
3077 GetObjectFile()->GetFileSpec().GetPath().c_str());
3078 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s);
3079 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s);
3080 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s);
3081 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s);
3082 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s);
3083 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s);
3084 s.Printf("\nTypes:\n"); m_type_index.Dump (&s);
3085 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s);
3086#endif
3087 }
3088}
3089
3090bool
3091SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl)
3092{
3093 if (namespace_decl == NULL__null)
3094 {
3095 // Invalid namespace decl which means we aren't matching only things
3096 // in this symbol file, so return true to indicate it matches this
3097 // symbol file.
3098 return true;
3099 }
3100
3101 clang::ASTContext *namespace_ast = namespace_decl->GetASTContext();
3102
3103 if (namespace_ast == NULL__null)
3104 return true; // No AST in the "namespace_decl", return true since it
3105 // could then match any symbol file, including this one
3106
3107 if (namespace_ast == GetClangASTContext().getASTContext())
3108 return true; // The ASTs match, return true
3109
3110 // The namespace AST was valid, and it does not match...
3111 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
3112
3113 if (log)
3114 GetObjectFile()->GetModule()->LogMessage(log, "Valid namespace does not match symbol file");
3115
3116 return false;
3117}
3118
3119bool
3120SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl,
3121 DWARFCompileUnit* cu,
3122 const DWARFDebugInfoEntry* die)
3123{
3124 // No namespace specified, so the answer is
3125 if (namespace_decl == NULL__null)
3126 return true;
3127
3128 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
3129
3130 const DWARFDebugInfoEntry *decl_ctx_die = NULL__null;
3131 clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die);
3132 if (decl_ctx_die)
3133 {
3134 clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl();
3135
3136 if (clang_namespace_decl)
3137 {
3138 if (decl_ctx_die->Tag() != DW_TAG_namespace)
3139 {
3140 if (log)
3141 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent is not a namespace");
3142 return false;
3143 }
3144
3145 if (clang_namespace_decl == die_clang_decl_ctx)
3146 return true;
3147 else
3148 return false;
3149 }
3150 else
3151 {
3152 // We have a namespace_decl that was not NULL but it contained
3153 // a NULL "clang::NamespaceDecl", so this means the global namespace
3154 // So as long the contained decl context DIE isn't a namespace
3155 // we should be ok.
3156 if (decl_ctx_die->Tag() != DW_TAG_namespace)
3157 return true;
3158 }
3159 }
3160
3161 if (log)
3162 GetObjectFile()->GetModule()->LogMessage(log, "Found a match, but its parent doesn't exist");
3163
3164 return false;
3165}
3166uint32_t
3167SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
3168{
3169 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
3170
3171 if (log)
3172 GetObjectFile()->GetModule()->LogMessage (log,
3173 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)",
3174 name.GetCString(),
3175 static_cast<const void*>(namespace_decl),
3176 append, max_matches);
3177
3178 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3179 return 0;
3180
3181 DWARFDebugInfo* info = DebugInfo();
3182 if (info == NULL__null)
3183 return 0;
3184
3185 // If we aren't appending the results to this list, then clear the list
3186 if (!append)
3187 variables.Clear();
3188
3189 // Remember how many variables are in the list before we search in case
3190 // we are appending the results to a variable list.
3191 const uint32_t original_size = variables.GetSize();
3192
3193 DIEArray die_offsets;
3194
3195 if (m_using_apple_tables)
3196 {
3197 if (m_apple_names_ap.get())
3198 {
3199 const char *name_cstr = name.GetCString();
3200 const char *base_name_start;
3201 const char *base_name_end = NULL__null;
3202
3203 if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end))
3204 base_name_start = name_cstr;
3205
3206 m_apple_names_ap->FindByName (base_name_start, die_offsets);
3207 }
3208 }
3209 else
3210 {
3211 // Index the DWARF if we haven't already
3212 if (!m_indexed)
3213 Index ();
3214
3215 m_global_index.Find (name, die_offsets);
3216 }
3217
3218 const size_t num_die_matches = die_offsets.size();
3219 if (num_die_matches)
3220 {
3221 SymbolContext sc;
3222 sc.module_sp = m_obj_file->GetModule();
3223 assert (sc.module_sp)((sc.module_sp) ? static_cast<void> (0) : __assert_fail
("sc.module_sp", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 3223, __PRETTY_FUNCTION__))
;
3224
3225 DWARFDebugInfo* debug_info = DebugInfo();
3226 DWARFCompileUnit* dwarf_cu = NULL__null;
3227 const DWARFDebugInfoEntry* die = NULL__null;
3228 bool done = false;
3229 for (size_t i=0; i<num_die_matches && !done; ++i)
3230 {
3231 const dw_offset_t die_offset = die_offsets[i];
3232 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3233
3234 if (die)
3235 {
3236 switch (die->Tag())
3237 {
3238 default:
3239 case DW_TAG_subprogram:
3240 case DW_TAG_inlined_subroutine:
3241 case DW_TAG_try_block:
3242 case DW_TAG_catch_block:
3243 break;
3244
3245 case DW_TAG_variable:
3246 {
3247 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX(4294967295U));
3248
3249 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3250 continue;
3251
3252 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS(18446744073709551615UL), die, false, false, &variables);
3253
3254 if (variables.GetSize() - original_size >= max_matches)
3255 done = true;
3256 }
3257 break;
3258 }
3259 }
3260 else
3261 {
3262 if (m_using_apple_tables)
3263 {
3264 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n",
3265 die_offset, name.GetCString());
3266 }
3267 }
3268 }
3269 }
3270
3271 // Return the number of variable that were appended to the list
3272 const uint32_t num_matches = variables.GetSize() - original_size;
3273 if (log && num_matches > 0)
3274 {
3275 GetObjectFile()->GetModule()->LogMessage (log,
3276 "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u",
3277 name.GetCString(),
3278 static_cast<const void*>(namespace_decl),
3279 append, max_matches,
3280 num_matches);
3281 }
3282 return num_matches;
3283}
3284
3285uint32_t
3286SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
3287{
3288 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
3289
3290 if (log)
3291 {
3292 GetObjectFile()->GetModule()->LogMessage (log,
3293 "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)",
3294 regex.GetText(), append,
3295 max_matches);
3296 }
3297
3298 DWARFDebugInfo* info = DebugInfo();
3299 if (info == NULL__null)
3300 return 0;
3301
3302 // If we aren't appending the results to this list, then clear the list
3303 if (!append)
3304 variables.Clear();
3305
3306 // Remember how many variables are in the list before we search in case
3307 // we are appending the results to a variable list.
3308 const uint32_t original_size = variables.GetSize();
3309
3310 DIEArray die_offsets;
3311
3312 if (m_using_apple_tables)
3313 {
3314 if (m_apple_names_ap.get())
3315 {
3316 DWARFMappedHash::DIEInfoArray hash_data_array;
3317 if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3318 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3319 }
3320 }
3321 else
3322 {
3323 // Index the DWARF if we haven't already
3324 if (!m_indexed)
3325 Index ();
3326
3327 m_global_index.Find (regex, die_offsets);
3328 }
3329
3330 SymbolContext sc;
3331 sc.module_sp = m_obj_file->GetModule();
3332 assert (sc.module_sp)((sc.module_sp) ? static_cast<void> (0) : __assert_fail
("sc.module_sp", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 3332, __PRETTY_FUNCTION__))
;
3333
3334 DWARFCompileUnit* dwarf_cu = NULL__null;
3335 const DWARFDebugInfoEntry* die = NULL__null;
3336 const size_t num_matches = die_offsets.size();
3337 if (num_matches)
3338 {
3339 DWARFDebugInfo* debug_info = DebugInfo();
3340 for (size_t i=0; i<num_matches; ++i)
3341 {
3342 const dw_offset_t die_offset = die_offsets[i];
3343 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3344
3345 if (die)
3346 {
3347 sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX(4294967295U));
3348
3349 ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS(18446744073709551615UL), die, false, false, &variables);
3350
3351 if (variables.GetSize() - original_size >= max_matches)
3352 break;
3353 }
3354 else
3355 {
3356 if (m_using_apple_tables)
3357 {
3358 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n",
3359 die_offset, regex.GetText());
3360 }
3361 }
3362 }
3363 }
3364
3365 // Return the number of variable that were appended to the list
3366 return variables.GetSize() - original_size;
3367}
3368
3369
3370bool
3371SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset,
3372 DWARFCompileUnit *&dwarf_cu,
3373 SymbolContextList& sc_list)
3374{
3375 const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3376 return ResolveFunction (dwarf_cu, die, sc_list);
16
Calling 'SymbolFileDWARF::ResolveFunction'
3377}
3378
3379
3380bool
3381SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu,
3382 const DWARFDebugInfoEntry *die,
3383 SymbolContextList& sc_list)
3384{
3385 SymbolContext sc;
3386
3387 if (die == NULL__null)
17
Taking false branch
3388 return false;
3389
3390 // If we were passed a die that is not a function, just return false...
3391 if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine)
3392 return false;
3393
3394 const DWARFDebugInfoEntry* inlined_die = NULL__null;
3395 if (die->Tag() == DW_TAG_inlined_subroutine)
18
Taking true branch
3396 {
3397 inlined_die = die;
3398
3399 while ((die = die->GetParent()) != NULL__null)
19
Value assigned to 'die'
20
Assuming pointer value is null
21
Loop condition is false. Execution continues on line 3405
3400 {
3401 if (die->Tag() == DW_TAG_subprogram)
3402 break;
3403 }
3404 }
3405 assert (die->Tag() == DW_TAG_subprogram)((die->Tag() == DW_TAG_subprogram) ? static_cast<void>
(0) : __assert_fail ("die->Tag() == DW_TAG_subprogram", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 3405, __PRETTY_FUNCTION__))
;
22
Within the expansion of the macro 'assert':
a
Called C++ object pointer is null
3406 if (GetFunction (cu, die, sc))
3407 {
3408 Address addr;
3409 // Parse all blocks if needed
3410 if (inlined_die)
3411 {
3412 sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset()));
3413 assert (sc.block != NULL)((sc.block != __null) ? static_cast<void> (0) : __assert_fail
("sc.block != __null", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 3413, __PRETTY_FUNCTION__))
;
3414 if (sc.block->GetStartAddress (addr) == false)
3415 addr.Clear();
3416 }
3417 else
3418 {
3419 sc.block = NULL__null;
3420 addr = sc.function->GetAddressRange().GetBaseAddress();
3421 }
3422
3423 if (addr.IsValid())
3424 {
3425 sc_list.Append(sc);
3426 return true;
3427 }
3428 }
3429
3430 return false;
3431}
3432
3433void
3434SymbolFileDWARF::FindFunctions (const ConstString &name,
3435 const NameToDIE &name_to_die,
3436 SymbolContextList& sc_list)
3437{
3438 DIEArray die_offsets;
3439 if (name_to_die.Find (name, die_offsets))
3440 {
3441 ParseFunctions (die_offsets, sc_list);
3442 }
3443}
3444
3445
3446void
3447SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3448 const NameToDIE &name_to_die,
3449 SymbolContextList& sc_list)
3450{
3451 DIEArray die_offsets;
3452 if (name_to_die.Find (regex, die_offsets))
8
Taking true branch
3453 {
3454 ParseFunctions (die_offsets, sc_list);
9
Calling 'SymbolFileDWARF::ParseFunctions'
3455 }
3456}
3457
3458
3459void
3460SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
3461 const DWARFMappedHash::MemoryTable &memory_table,
3462 SymbolContextList& sc_list)
3463{
3464 DIEArray die_offsets;
3465 DWARFMappedHash::DIEInfoArray hash_data_array;
3466 if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
3467 {
3468 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
3469 ParseFunctions (die_offsets, sc_list);
3470 }
3471}
3472
3473void
3474SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets,
3475 SymbolContextList& sc_list)
3476{
3477 const size_t num_matches = die_offsets.size();
3478 if (num_matches)
10
Assuming 'num_matches' is not equal to 0
11
Taking true branch
3479 {
3480 SymbolContext sc;
3481
3482 DWARFCompileUnit* dwarf_cu = NULL__null;
3483 for (size_t i=0; i<num_matches; ++i)
12
Loop condition is true. Entering loop body
13
Assuming 'i' is < 'num_matches'
14
Loop condition is true. Entering loop body
3484 {
3485 const dw_offset_t die_offset = die_offsets[i];
3486 ResolveFunction (die_offset, dwarf_cu, sc_list);
15
Calling 'SymbolFileDWARF::ResolveFunction'
3487 }
3488 }
3489}
3490
3491bool
3492SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die,
3493 const DWARFCompileUnit *dwarf_cu,
3494 uint32_t name_type_mask,
3495 const char *partial_name,
3496 const char *base_name_start,
3497 const char *base_name_end)
3498{
3499 // If we are looking only for methods, throw away all the ones that are or aren't in C++ classes:
3500 if (name_type_mask == eFunctionNameTypeMethod || name_type_mask == eFunctionNameTypeBase)
3501 {
3502 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset());
3503 if (!containing_decl_ctx)
3504 return false;
3505
3506 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind());
3507
3508 if (name_type_mask == eFunctionNameTypeMethod)
3509 {
3510 if (is_cxx_method == false)
3511 return false;
3512 }
3513
3514 if (name_type_mask == eFunctionNameTypeBase)
3515 {
3516 if (is_cxx_method == true)
3517 return false;
3518 }
3519 }
3520
3521 // Now we need to check whether the name we got back for this type matches the extra specifications
3522 // that were in the name we're looking up:
3523 if (base_name_start != partial_name || *base_name_end != '\0')
3524 {
3525 // First see if the stuff to the left matches the full name. To do that let's see if
3526 // we can pull out the mips linkage name attribute:
3527
3528 Mangled best_name;
3529 DWARFDebugInfoEntry::Attributes attributes;
3530 DWARFFormValue form_value;
3531 die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
3532 uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name);
3533 if (idx == UINT32_MAX(4294967295U))
3534 idx = attributes.FindAttributeIndex(DW_AT_linkage_name);
3535 if (idx != UINT32_MAX(4294967295U))
3536 {
3537 if (attributes.ExtractFormValueAtIndex(this, idx, form_value))
3538 {
3539 const char *mangled_name = form_value.AsCString(&get_debug_str_data());
3540 if (mangled_name)
3541 best_name.SetValue (ConstString(mangled_name), true);
3542 }
3543 }
3544
3545 if (!best_name)
3546 {
3547 idx = attributes.FindAttributeIndex(DW_AT_name);
3548 if (idx != UINT32_MAX(4294967295U) && attributes.ExtractFormValueAtIndex(this, idx, form_value))
3549 {
3550 const char *name = form_value.AsCString(&get_debug_str_data());
3551 best_name.SetValue (ConstString(name), false);
3552 }
3553 }
3554
3555 if (best_name.GetDemangledName())
3556 {
3557 const char *demangled = best_name.GetDemangledName().GetCString();
3558 if (demangled)
3559 {
3560 std::string name_no_parens(partial_name, base_name_end - partial_name);
3561 const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str());
3562 if (partial_in_demangled == NULL__null)
3563 return false;
3564 else
3565 {
3566 // Sort out the case where our name is something like "Process::Destroy" and the match is
3567 // "SBProcess::Destroy" - that shouldn't be a match. We should really always match on
3568 // namespace boundaries...
3569
3570 if (partial_name[0] == ':' && partial_name[1] == ':')
3571 {
3572 // The partial name was already on a namespace boundary so all matches are good.
3573 return true;
3574 }
3575 else if (partial_in_demangled == demangled)
3576 {
3577 // They both start the same, so this is an good match.
3578 return true;
3579 }
3580 else
3581 {
3582 if (partial_in_demangled - demangled == 1)
3583 {
3584 // Only one character difference, can't be a namespace boundary...
3585 return false;
3586 }
3587 else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':')
3588 {
3589 // We are on a namespace boundary, so this is also good.
3590 return true;
3591 }
3592 else
3593 return false;
3594 }
3595 }
3596 }
3597 }
3598 }
3599
3600 return true;
3601}
3602
3603uint32_t
3604SymbolFileDWARF::FindFunctions (const ConstString &name,
3605 const lldb_private::ClangNamespaceDecl *namespace_decl,
3606 uint32_t name_type_mask,
3607 bool include_inlines,
3608 bool append,
3609 SymbolContextList& sc_list)
3610{
3611 Timer scoped_timer (__PRETTY_FUNCTION__,
3612 "SymbolFileDWARF::FindFunctions (name = '%s')",
3613 name.AsCString());
3614
3615 // eFunctionNameTypeAuto should be pre-resolved by a call to Module::PrepareForFunctionNameLookup()
3616 assert ((name_type_mask & eFunctionNameTypeAuto) == 0)(((name_type_mask & eFunctionNameTypeAuto) == 0) ? static_cast
<void> (0) : __assert_fail ("(name_type_mask & eFunctionNameTypeAuto) == 0"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 3616, __PRETTY_FUNCTION__))
;
3617
3618 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
3619
3620 if (log)
3621 {
3622 GetObjectFile()->GetModule()->LogMessage (log,
3623 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)",
3624 name.GetCString(),
3625 name_type_mask,
3626 append);
3627 }
3628
3629 // If we aren't appending the results to this list, then clear the list
3630 if (!append)
3631 sc_list.Clear();
3632
3633 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
3634 return 0;
3635
3636 // If name is empty then we won't find anything.
3637 if (name.IsEmpty())
3638 return 0;
3639
3640 // Remember how many sc_list are in the list before we search in case
3641 // we are appending the results to a variable list.
3642
3643 const char *name_cstr = name.GetCString();
3644
3645 const uint32_t original_size = sc_list.GetSize();
3646
3647 DWARFDebugInfo* info = DebugInfo();
3648 if (info == NULL__null)
3649 return 0;
3650
3651 DWARFCompileUnit *dwarf_cu = NULL__null;
3652 std::set<const DWARFDebugInfoEntry *> resolved_dies;
3653 if (m_using_apple_tables)
3654 {
3655 if (m_apple_names_ap.get())
3656 {
3657
3658 DIEArray die_offsets;
3659
3660 uint32_t num_matches = 0;
3661
3662 if (name_type_mask & eFunctionNameTypeFull)
3663 {
3664 // If they asked for the full name, match what they typed. At some point we may
3665 // want to canonicalize this (strip double spaces, etc. For now, we just add all the
3666 // dies that we find by exact match.
3667 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3668 for (uint32_t i = 0; i < num_matches; i++)
3669 {
3670 const dw_offset_t die_offset = die_offsets[i];
3671 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3672 if (die)
3673 {
3674 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3675 continue;
3676
3677 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3678 continue;
3679
3680 if (resolved_dies.find(die) == resolved_dies.end())
3681 {
3682 if (ResolveFunction (dwarf_cu, die, sc_list))
3683 resolved_dies.insert(die);
3684 }
3685 }
3686 else
3687 {
3688 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3689 die_offset, name_cstr);
3690 }
3691 }
3692 }
3693
3694 if (name_type_mask & eFunctionNameTypeSelector)
3695 {
3696 if (namespace_decl && *namespace_decl)
3697 return 0; // no selectors in namespaces
3698
3699 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3700 // Now make sure these are actually ObjC methods. In this case we can simply look up the name,
3701 // and if it is an ObjC method name, we're good.
3702
3703 for (uint32_t i = 0; i < num_matches; i++)
3704 {
3705 const dw_offset_t die_offset = die_offsets[i];
3706 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3707 if (die)
3708 {
3709 const char *die_name = die->GetName(this, dwarf_cu);
3710 if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name))
3711 {
3712 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3713 continue;
3714
3715 if (resolved_dies.find(die) == resolved_dies.end())
3716 {
3717 if (ResolveFunction (dwarf_cu, die, sc_list))
3718 resolved_dies.insert(die);
3719 }
3720 }
3721 }
3722 else
3723 {
3724 GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3725 die_offset, name_cstr);
3726 }
3727 }
3728 die_offsets.clear();
3729 }
3730
3731 if (((name_type_mask & eFunctionNameTypeMethod) && !namespace_decl) || name_type_mask & eFunctionNameTypeBase)
3732 {
3733 // The apple_names table stores just the "base name" of C++ methods in the table. So we have to
3734 // extract the base name, look that up, and if there is any other information in the name we were
3735 // passed in we have to post-filter based on that.
3736
3737 // FIXME: Arrange the logic above so that we don't calculate the base name twice:
3738 num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
3739
3740 for (uint32_t i = 0; i < num_matches; i++)
3741 {
3742 const dw_offset_t die_offset = die_offsets[i];
3743 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
3744 if (die)
3745 {
3746 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3747 continue;
3748
3749 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3750 continue;
3751
3752 // If we get to here, the die is good, and we should add it:
3753 if (resolved_dies.find(die) == resolved_dies.end())
3754 if (ResolveFunction (dwarf_cu, die, sc_list))
3755 {
3756 bool keep_die = true;
3757 if ((name_type_mask & (eFunctionNameTypeBase|eFunctionNameTypeMethod)) != (eFunctionNameTypeBase|eFunctionNameTypeMethod))
3758 {
3759 // We are looking for either basenames or methods, so we need to
3760 // trim out the ones we won't want by looking at the type
3761 SymbolContext sc;
3762 if (sc_list.GetLastContext(sc))
3763 {
3764 if (sc.block)
3765 {
3766 // We have an inlined function
3767 }
3768 else if (sc.function)
3769 {
3770 Type *type = sc.function->GetType();
3771
3772 if (type)
3773 {
3774 clang::DeclContext* decl_ctx = GetClangDeclContextContainingTypeUID (type->GetID());
3775 if (decl_ctx->isRecord())
3776 {
3777 if (name_type_mask & eFunctionNameTypeBase)
3778 {
3779 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3780 keep_die = false;
3781 }
3782 }
3783 else
3784 {
3785 if (name_type_mask & eFunctionNameTypeMethod)
3786 {
3787 sc_list.RemoveContextAtIndex(sc_list.GetSize()-1);
3788 keep_die = false;
3789 }
3790 }
3791 }
3792 else
3793 {
3794 GetObjectFile()->GetModule()->ReportWarning ("function at die offset 0x%8.8x had no function type",
3795 die_offset);
3796 }
3797 }
3798 }
3799 }
3800 if (keep_die)
3801 resolved_dies.insert(die);
3802 }
3803 }
3804 else
3805 {
3806 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
3807 die_offset, name_cstr);
3808 }
3809 }
3810 die_offsets.clear();
3811 }
3812 }
3813 }
3814 else
3815 {
3816
3817 // Index the DWARF if we haven't already
3818 if (!m_indexed)
3819 Index ();
3820
3821 if (name_type_mask & eFunctionNameTypeFull)
3822 {
3823 FindFunctions (name, m_function_fullname_index, sc_list);
3824
3825 // FIXME Temporary workaround for global/anonymous namespace
3826 // functions on FreeBSD and Linux
3827#if defined (__FreeBSD__) || defined (__linux__1)
3828 // If we didn't find any functions in the global namespace try
3829 // looking in the basename index but ignore any returned
3830 // functions that have a namespace (ie. mangled names starting with
3831 // '_ZN') but keep functions which have an anonymous namespace
3832 if (sc_list.GetSize() == 0)
3833 {
3834 SymbolContextList temp_sc_list;
3835 FindFunctions (name, m_function_basename_index, temp_sc_list);
3836 if (!namespace_decl)
3837 {
3838 SymbolContext sc;
3839 for (uint32_t i = 0; i < temp_sc_list.GetSize(); i++)
3840 {
3841 if (temp_sc_list.GetContextAtIndex(i, sc))
3842 {
3843 ConstString mangled_name = sc.GetFunctionName(Mangled::ePreferMangled);
3844 ConstString demangled_name = sc.GetFunctionName(Mangled::ePreferDemangled);
3845 if (strncmp(mangled_name.GetCString(), "_ZN", 3) ||
3846 !strncmp(demangled_name.GetCString(), "(anonymous namespace)", 21))
3847 {
3848 sc_list.Append(sc);
3849 }
3850 }
3851 }
3852 }
3853 }
3854#endif
3855 }
3856 DIEArray die_offsets;
3857 DWARFCompileUnit *dwarf_cu = NULL__null;
3858
3859 if (name_type_mask & eFunctionNameTypeBase)
3860 {
3861 uint32_t num_base = m_function_basename_index.Find(name, die_offsets);
3862 for (uint32_t i = 0; i < num_base; i++)
3863 {
3864 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3865 if (die)
3866 {
3867 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3868 continue;
3869
3870 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
3871 continue;
3872
3873 // If we get to here, the die is good, and we should add it:
3874 if (resolved_dies.find(die) == resolved_dies.end())
3875 {
3876 if (ResolveFunction (dwarf_cu, die, sc_list))
3877 resolved_dies.insert(die);
3878 }
3879 }
3880 }
3881 die_offsets.clear();
3882 }
3883
3884 if (name_type_mask & eFunctionNameTypeMethod)
3885 {
3886 if (namespace_decl && *namespace_decl)
3887 return 0; // no methods in namespaces
3888
3889 uint32_t num_base = m_function_method_index.Find(name, die_offsets);
3890 {
3891 for (uint32_t i = 0; i < num_base; i++)
3892 {
3893 const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
3894 if (die)
3895 {
3896 if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
3897 continue;
3898
3899 // If we get to here, the die is good, and we should add it:
3900 if (resolved_dies.find(die) == resolved_dies.end())
3901 {
3902 if (ResolveFunction (dwarf_cu, die, sc_list))
3903 resolved_dies.insert(die);
3904 }
3905 }
3906 }
3907 }
3908 die_offsets.clear();
3909 }
3910
3911 if ((name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl))
3912 {
3913 FindFunctions (name, m_function_selector_index, sc_list);
3914 }
3915
3916 }
3917
3918 // Return the number of variable that were appended to the list
3919 const uint32_t num_matches = sc_list.GetSize() - original_size;
3920
3921 if (log && num_matches > 0)
3922 {
3923 GetObjectFile()->GetModule()->LogMessage (log,
3924 "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u",
3925 name.GetCString(),
3926 name_type_mask,
3927 append,
3928 num_matches);
3929 }
3930 return num_matches;
3931}
3932
3933uint32_t
3934SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list)
3935{
3936 Timer scoped_timer (__PRETTY_FUNCTION__,
3937 "SymbolFileDWARF::FindFunctions (regex = '%s')",
3938 regex.GetText());
3939
3940 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
3941
3942 if (log)
1
Assuming 'log' is null
2
Taking false branch
3943 {
3944 GetObjectFile()->GetModule()->LogMessage (log,
3945 "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)",
3946 regex.GetText(),
3947 append);
3948 }
3949
3950
3951 // If we aren't appending the results to this list, then clear the list
3952 if (!append)
3
Assuming 'append' is not equal to 0
4
Taking false branch
3953 sc_list.Clear();
3954
3955 // Remember how many sc_list are in the list before we search in case
3956 // we are appending the results to a variable list.
3957 uint32_t original_size = sc_list.GetSize();
3958
3959 if (m_using_apple_tables)
5
Taking false branch
3960 {
3961 if (m_apple_names_ap.get())
3962 FindFunctions (regex, *m_apple_names_ap, sc_list);
3963 }
3964 else
3965 {
3966 // Index the DWARF if we haven't already
3967 if (!m_indexed)
6
Taking false branch
3968 Index ();
3969
3970 FindFunctions (regex, m_function_basename_index, sc_list);
3971
3972 FindFunctions (regex, m_function_fullname_index, sc_list);
7
Calling 'SymbolFileDWARF::FindFunctions'
3973 }
3974
3975 // Return the number of variable that were appended to the list
3976 return sc_list.GetSize() - original_size;
3977}
3978
3979uint32_t
3980SymbolFileDWARF::FindTypes (const SymbolContext& sc,
3981 const ConstString &name,
3982 const lldb_private::ClangNamespaceDecl *namespace_decl,
3983 bool append,
3984 uint32_t max_matches,
3985 TypeList& types)
3986{
3987 DWARFDebugInfo* info = DebugInfo();
3988 if (info == NULL__null)
3989 return 0;
3990
3991 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
3992
3993 if (log)
3994 {
3995 if (namespace_decl)
3996 GetObjectFile()->GetModule()->LogMessage (log,
3997 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)",
3998 name.GetCString(),
3999 static_cast<void*>(namespace_decl->GetNamespaceDecl()),
4000 namespace_decl->GetQualifiedName().c_str(),
4001 append, max_matches);
4002 else
4003 GetObjectFile()->GetModule()->LogMessage (log,
4004 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)",
4005 name.GetCString(), append,
4006 max_matches);
4007 }
4008
4009 // If we aren't appending the results to this list, then clear the list
4010 if (!append)
4011 types.Clear();
4012
4013 if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
4014 return 0;
4015
4016 DIEArray die_offsets;
4017
4018 if (m_using_apple_tables)
4019 {
4020 if (m_apple_types_ap.get())
4021 {
4022 const char *name_cstr = name.GetCString();
4023 m_apple_types_ap->FindByName (name_cstr, die_offsets);
4024 }
4025 }
4026 else
4027 {
4028 if (!m_indexed)
4029 Index ();
4030
4031 m_type_index.Find (name, die_offsets);
4032 }
4033
4034 const size_t num_die_matches = die_offsets.size();
4035
4036 if (num_die_matches)
4037 {
4038 const uint32_t initial_types_size = types.GetSize();
4039 DWARFCompileUnit* dwarf_cu = NULL__null;
4040 const DWARFDebugInfoEntry* die = NULL__null;
4041 DWARFDebugInfo* debug_info = DebugInfo();
4042 for (size_t i=0; i<num_die_matches; ++i)
4043 {
4044 const dw_offset_t die_offset = die_offsets[i];
4045 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
4046
4047 if (die)
4048 {
4049 if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
4050 continue;
4051
4052 Type *matching_type = ResolveType (dwarf_cu, die);
4053 if (matching_type)
4054 {
4055 // We found a type pointer, now find the shared pointer form our type list
4056 types.InsertUnique (matching_type->shared_from_this());
4057 if (types.GetSize() >= max_matches)
4058 break;
4059 }
4060 }
4061 else
4062 {
4063 if (m_using_apple_tables)
4064 {
4065 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4066 die_offset, name.GetCString());
4067 }
4068 }
4069
4070 }
4071 const uint32_t num_matches = types.GetSize() - initial_types_size;
4072 if (log && num_matches)
4073 {
4074 if (namespace_decl)
4075 {
4076 GetObjectFile()->GetModule()->LogMessage (log,
4077 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u",
4078 name.GetCString(),
4079 static_cast<void*>(namespace_decl->GetNamespaceDecl()),
4080 namespace_decl->GetQualifiedName().c_str(),
4081 append, max_matches,
4082 num_matches);
4083 }
4084 else
4085 {
4086 GetObjectFile()->GetModule()->LogMessage (log,
4087 "SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u",
4088 name.GetCString(),
4089 append, max_matches,
4090 num_matches);
4091 }
4092 }
4093 return num_matches;
4094 }
4095 return 0;
4096}
4097
4098
4099ClangNamespaceDecl
4100SymbolFileDWARF::FindNamespace (const SymbolContext& sc,
4101 const ConstString &name,
4102 const lldb_private::ClangNamespaceDecl *parent_namespace_decl)
4103{
4104 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS(1u << 6)));
4105
4106 if (log)
4107 {
4108 GetObjectFile()->GetModule()->LogMessage (log,
4109 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
4110 name.GetCString());
4111 }
4112
4113 if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl))
4114 return ClangNamespaceDecl();
4115
4116 ClangNamespaceDecl namespace_decl;
4117 DWARFDebugInfo* info = DebugInfo();
4118 if (info)
4119 {
4120 DIEArray die_offsets;
4121
4122 // Index if we already haven't to make sure the compile units
4123 // get indexed and make their global DIE index list
4124 if (m_using_apple_tables)
4125 {
4126 if (m_apple_namespaces_ap.get())
4127 {
4128 const char *name_cstr = name.GetCString();
4129 m_apple_namespaces_ap->FindByName (name_cstr, die_offsets);
4130 }
4131 }
4132 else
4133 {
4134 if (!m_indexed)
4135 Index ();
4136
4137 m_namespace_index.Find (name, die_offsets);
4138 }
4139
4140 DWARFCompileUnit* dwarf_cu = NULL__null;
4141 const DWARFDebugInfoEntry* die = NULL__null;
4142 const size_t num_matches = die_offsets.size();
4143 if (num_matches)
4144 {
4145 DWARFDebugInfo* debug_info = DebugInfo();
4146 for (size_t i=0; i<num_matches; ++i)
4147 {
4148 const dw_offset_t die_offset = die_offsets[i];
4149 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
4150
4151 if (die)
4152 {
4153 if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die))
4154 continue;
4155
4156 clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die);
4157 if (clang_namespace_decl)
4158 {
4159 namespace_decl.SetASTContext (GetClangASTContext().getASTContext());
4160 namespace_decl.SetNamespaceDecl (clang_namespace_decl);
4161 break;
4162 }
4163 }
4164 else
4165 {
4166 if (m_using_apple_tables)
4167 {
4168 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n",
4169 die_offset, name.GetCString());
4170 }
4171 }
4172
4173 }
4174 }
4175 }
4176 if (log && namespace_decl.GetNamespaceDecl())
4177 {
4178 GetObjectFile()->GetModule()->LogMessage (log,
4179 "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"",
4180 name.GetCString(),
4181 static_cast<const void*>(namespace_decl.GetNamespaceDecl()),
4182 namespace_decl.GetQualifiedName().c_str());
4183 }
4184
4185 return namespace_decl;
4186}
4187
4188uint32_t
4189SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types)
4190{
4191 // Remember how many sc_list are in the list before we search in case
4192 // we are appending the results to a variable list.
4193 uint32_t original_size = types.GetSize();
4194
4195 const uint32_t num_die_offsets = die_offsets.size();
4196 // Parse all of the types we found from the pubtypes matches
4197 uint32_t i;
4198 uint32_t num_matches = 0;
4199 for (i = 0; i < num_die_offsets; ++i)
4200 {
4201 Type *matching_type = ResolveTypeUID (die_offsets[i]);
4202 if (matching_type)
4203 {
4204 // We found a type pointer, now find the shared pointer form our type list
4205 types.InsertUnique (matching_type->shared_from_this());
4206 ++num_matches;
4207 if (num_matches >= max_matches)
4208 break;
4209 }
4210 }
4211
4212 // Return the number of variable that were appended to the list
4213 return types.GetSize() - original_size;
4214}
4215
4216
4217size_t
4218SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc,
4219 clang::DeclContext *containing_decl_ctx,
4220 DWARFCompileUnit* dwarf_cu,
4221 const DWARFDebugInfoEntry *parent_die,
4222 bool skip_artificial,
4223 bool &is_static,
4224 bool &is_variadic,
4225 TypeList* type_list,
4226 std::vector<ClangASTType>& function_param_types,
4227 std::vector<clang::ParmVarDecl*>& function_param_decls,
4228 unsigned &type_quals) // ,
4229 // ClangASTContext::TemplateParameterInfos &template_param_infos))
4230{
4231 if (parent_die == NULL__null)
4232 return 0;
4233
4234 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64());
4235
4236 size_t arg_idx = 0;
4237 const DWARFDebugInfoEntry *die;
4238 for (die = parent_die->GetFirstChild(); die != NULL__null; die = die->GetSibling())
4239 {
4240 dw_tag_t tag = die->Tag();
4241 switch (tag)
4242 {
4243 case DW_TAG_formal_parameter:
4244 {
4245 DWARFDebugInfoEntry::Attributes attributes;
4246 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4247 if (num_attributes > 0)
4248 {
4249 const char *name = NULL__null;
4250 Declaration decl;
4251 dw_offset_t param_type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
4252 bool is_artificial = false;
4253 // one of None, Auto, Register, Extern, Static, PrivateExtern
4254
4255 clang::StorageClass storage = clang::SC_None;
4256 uint32_t i;
4257 for (i=0; i<num_attributes; ++i)
4258 {
4259 const dw_attr_t attr = attributes.AttributeAtIndex(i);
4260 DWARFFormValue form_value;
4261 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4262 {
4263 switch (attr)
4264 {
4265 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4266 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
4267 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4268 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break;
4269 case DW_AT_type: param_type_die_offset = form_value.Reference(dwarf_cu); break;
4270 case DW_AT_artificial: is_artificial = form_value.Boolean(); break;
4271 case DW_AT_location:
4272 // if (form_value.BlockData())
4273 // {
4274 // const DWARFDataExtractor& debug_info_data = debug_info();
4275 // uint32_t block_length = form_value.Unsigned();
4276 // DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length);
4277 // }
4278 // else
4279 // {
4280 // }
4281 // break;
4282 case DW_AT_const_value:
4283 case DW_AT_default_value:
4284 case DW_AT_description:
4285 case DW_AT_endianity:
4286 case DW_AT_is_optional:
4287 case DW_AT_segment:
4288 case DW_AT_variable_parameter:
4289 default:
4290 case DW_AT_abstract_origin:
4291 case DW_AT_sibling:
4292 break;
4293 }
4294 }
4295 }
4296
4297 bool skip = false;
4298 if (skip_artificial)
4299 {
4300 if (is_artificial)
4301 {
4302 // In order to determine if a C++ member function is
4303 // "const" we have to look at the const-ness of "this"...
4304 // Ugly, but that
4305 if (arg_idx == 0)
4306 {
4307 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()))
4308 {
4309 // Often times compilers omit the "this" name for the
4310 // specification DIEs, so we can't rely upon the name
4311 // being in the formal parameter DIE...
4312 if (name == NULL__null || ::strcmp(name, "this")==0)
4313 {
4314 Type *this_type = ResolveTypeUID (param_type_die_offset);
4315 if (this_type)
4316 {
4317 uint32_t encoding_mask = this_type->GetEncodingMask();
4318 if (encoding_mask & Type::eEncodingIsPointerUID)
4319 {
4320 is_static = false;
4321
4322 if (encoding_mask & (1u << Type::eEncodingIsConstUID))
4323 type_quals |= clang::Qualifiers::Const;
4324 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
4325 type_quals |= clang::Qualifiers::Volatile;
4326 }
4327 }
4328 }
4329 }
4330 }
4331 skip = true;
4332 }
4333 else
4334 {
4335
4336 // HACK: Objective C formal parameters "self" and "_cmd"
4337 // are not marked as artificial in the DWARF...
4338 CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX(4294967295U));
4339 if (comp_unit)
4340 {
4341 switch (comp_unit->GetLanguage())
4342 {
4343 case eLanguageTypeObjC:
4344 case eLanguageTypeObjC_plus_plus:
4345 if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0))
4346 skip = true;
4347 break;
4348 default:
4349 break;
4350 }
4351 }
4352 }
4353 }
4354
4355 if (!skip)
4356 {
4357 Type *type = ResolveTypeUID(param_type_die_offset);
4358 if (type)
4359 {
4360 function_param_types.push_back (type->GetClangForwardType());
4361
4362 clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name,
4363 type->GetClangForwardType(),
4364 storage);
4365 assert(param_var_decl)((param_var_decl) ? static_cast<void> (0) : __assert_fail
("param_var_decl", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 4365, __PRETTY_FUNCTION__))
;
4366 function_param_decls.push_back(param_var_decl);
4367
4368 GetClangASTContext().SetMetadataAsUserID (param_var_decl, MakeUserID(die->GetOffset()));
4369 }
4370 }
4371 }
4372 arg_idx++;
4373 }
4374 break;
4375
4376 case DW_TAG_unspecified_parameters:
4377 is_variadic = true;
4378 break;
4379
4380 case DW_TAG_template_type_parameter:
4381 case DW_TAG_template_value_parameter:
4382 // The one caller of this was never using the template_param_infos,
4383 // and the local variable was taking up a large amount of stack space
4384 // in SymbolFileDWARF::ParseType() so this was removed. If we ever need
4385 // the template params back, we can add them back.
4386 // ParseTemplateDIE (dwarf_cu, die, template_param_infos);
4387 break;
4388
4389 default:
4390 break;
4391 }
4392 }
4393 return arg_idx;
4394}
4395
4396size_t
4397SymbolFileDWARF::ParseChildEnumerators
4398(
4399 const SymbolContext& sc,
4400 lldb_private::ClangASTType &clang_type,
4401 bool is_signed,
4402 uint32_t enumerator_byte_size,
4403 DWARFCompileUnit* dwarf_cu,
4404 const DWARFDebugInfoEntry *parent_die
4405)
4406{
4407 if (parent_die == NULL__null)
4408 return 0;
4409
4410 size_t enumerators_added = 0;
4411 const DWARFDebugInfoEntry *die;
4412 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64());
4413
4414 for (die = parent_die->GetFirstChild(); die != NULL__null; die = die->GetSibling())
4415 {
4416 const dw_tag_t tag = die->Tag();
4417 if (tag == DW_TAG_enumerator)
4418 {
4419 DWARFDebugInfoEntry::Attributes attributes;
4420 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4421 if (num_child_attributes > 0)
4422 {
4423 const char *name = NULL__null;
4424 bool got_value = false;
4425 int64_t enum_value = 0;
4426 Declaration decl;
4427
4428 uint32_t i;
4429 for (i=0; i<num_child_attributes; ++i)
4430 {
4431 const dw_attr_t attr = attributes.AttributeAtIndex(i);
4432 DWARFFormValue form_value;
4433 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4434 {
4435 switch (attr)
4436 {
4437 case DW_AT_const_value:
4438 got_value = true;
4439 if (is_signed)
4440 enum_value = form_value.Signed();
4441 else
4442 enum_value = form_value.Unsigned();
4443 break;
4444
4445 case DW_AT_name:
4446 name = form_value.AsCString(&get_debug_str_data());
4447 break;
4448
4449 case DW_AT_description:
4450 default:
4451 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
4452 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
4453 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
4454 case DW_AT_sibling:
4455 break;
4456 }
4457 }
4458 }
4459
4460 if (name && name[0] && got_value)
4461 {
4462 clang_type.AddEnumerationValueToEnumerationType (clang_type.GetEnumerationIntegerType(),
4463 decl,
4464 name,
4465 enum_value,
4466 enumerator_byte_size * 8);
4467 ++enumerators_added;
4468 }
4469 }
4470 }
4471 }
4472 return enumerators_added;
4473}
4474
4475void
4476SymbolFileDWARF::ParseChildArrayInfo
4477(
4478 const SymbolContext& sc,
4479 DWARFCompileUnit* dwarf_cu,
4480 const DWARFDebugInfoEntry *parent_die,
4481 int64_t& first_index,
4482 std::vector<uint64_t>& element_orders,
4483 uint32_t& byte_stride,
4484 uint32_t& bit_stride
4485)
4486{
4487 if (parent_die == NULL__null)
4488 return;
4489
4490 const DWARFDebugInfoEntry *die;
4491 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64());
4492 for (die = parent_die->GetFirstChild(); die != NULL__null; die = die->GetSibling())
4493 {
4494 const dw_tag_t tag = die->Tag();
4495 switch (tag)
4496 {
4497 case DW_TAG_subrange_type:
4498 {
4499 DWARFDebugInfoEntry::Attributes attributes;
4500 const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
4501 if (num_child_attributes > 0)
4502 {
4503 uint64_t num_elements = 0;
4504 uint64_t lower_bound = 0;
4505 uint64_t upper_bound = 0;
4506 bool upper_bound_valid = false;
4507 uint32_t i;
4508 for (i=0; i<num_child_attributes; ++i)
4509 {
4510 const dw_attr_t attr = attributes.AttributeAtIndex(i);
4511 DWARFFormValue form_value;
4512 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
4513 {
4514 switch (attr)
4515 {
4516 case DW_AT_name:
4517 break;
4518
4519 case DW_AT_count:
4520 num_elements = form_value.Unsigned();
4521 break;
4522
4523 case DW_AT_bit_stride:
4524 bit_stride = form_value.Unsigned();
4525 break;
4526
4527 case DW_AT_byte_stride:
4528 byte_stride = form_value.Unsigned();
4529 break;
4530
4531 case DW_AT_lower_bound:
4532 lower_bound = form_value.Unsigned();
4533 break;
4534
4535 case DW_AT_upper_bound:
4536 upper_bound_valid = true;
4537 upper_bound = form_value.Unsigned();
4538 break;
4539
4540 default:
4541 case DW_AT_abstract_origin:
4542 case DW_AT_accessibility:
4543 case DW_AT_allocated:
4544 case DW_AT_associated:
4545 case DW_AT_data_location:
4546 case DW_AT_declaration:
4547 case DW_AT_description:
4548 case DW_AT_sibling:
4549 case DW_AT_threads_scaled:
4550 case DW_AT_type:
4551 case DW_AT_visibility:
4552 break;
4553 }
4554 }
4555 }
4556
4557 if (num_elements == 0)
4558 {
4559 if (upper_bound_valid && upper_bound >= lower_bound)
4560 num_elements = upper_bound - lower_bound + 1;
4561 }
4562
4563 element_orders.push_back (num_elements);
4564 }
4565 }
4566 break;
4567 }
4568 }
4569}
4570
4571TypeSP
4572SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die)
4573{
4574 TypeSP type_sp;
4575 if (die != NULL__null)
4576 {
4577 assert(dwarf_cu != NULL)((dwarf_cu != __null) ? static_cast<void> (0) : __assert_fail
("dwarf_cu != __null", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 4577, __PRETTY_FUNCTION__))
;
4578 Type *type_ptr = m_die_to_type.lookup (die);
4579 if (type_ptr == NULL__null)
4580 {
4581 CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu);
4582 assert (lldb_cu)((lldb_cu) ? static_cast<void> (0) : __assert_fail ("lldb_cu"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 4582, __PRETTY_FUNCTION__))
;
4583 SymbolContext sc(lldb_cu);
4584 type_sp = ParseType(sc, dwarf_cu, die, NULL__null);
4585 }
4586 else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
4587 {
4588 // Grab the existing type from the master types lists
4589 type_sp = type_ptr->shared_from_this();
4590 }
4591
4592 }
4593 return type_sp;
4594}
4595
4596clang::DeclContext *
4597SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset)
4598{
4599 if (die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
4600 {
4601 DWARFCompileUnitSP cu_sp;
4602 const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp);
4603 return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL__null);
4604 }
4605 return NULL__null;
4606}
4607
4608clang::DeclContext *
4609SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset)
4610{
4611 if (die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
4612 {
4613 DWARFDebugInfo* debug_info = DebugInfo();
4614 if (debug_info)
4615 {
4616 DWARFCompileUnitSP cu_sp;
4617 const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp);
4618 if (die)
4619 return GetClangDeclContextForDIE (sc, cu_sp.get(), die);
4620 }
4621 }
4622 return NULL__null;
4623}
4624
4625clang::NamespaceDecl *
4626SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *die)
4627{
4628 if (die && die->Tag() == DW_TAG_namespace)
4629 {
4630 // See if we already parsed this namespace DIE and associated it with a
4631 // uniqued namespace declaration
4632 clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]);
4633 if (namespace_decl)
4634 return namespace_decl;
4635 else
4636 {
4637 const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL__null);
4638 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL__null);
4639 namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx);
4640 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO(1u << 1)));
4641 if (log)
4642 {
4643 if (namespace_name)
4644 {
4645 GetObjectFile()->GetModule()->LogMessage (log,
4646 "ASTContext => %p: 0x%8.8" PRIx64"l" "x" ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)",
4647 static_cast<void*>(GetClangASTContext().getASTContext()),
4648 MakeUserID(die->GetOffset()),
4649 namespace_name,
4650 static_cast<void*>(namespace_decl),
4651 static_cast<void*>(namespace_decl->getOriginalNamespace()));
4652 }
4653 else
4654 {
4655 GetObjectFile()->GetModule()->LogMessage (log,
4656 "ASTContext => %p: 0x%8.8" PRIx64"l" "x" ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)",
4657 static_cast<void*>(GetClangASTContext().getASTContext()),
4658 MakeUserID(die->GetOffset()),
4659 static_cast<void*>(namespace_decl),
4660 static_cast<void*>(namespace_decl->getOriginalNamespace()));
4661 }
4662 }
4663
4664 if (namespace_decl)
4665 LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die);
4666 return namespace_decl;
4667 }
4668 }
4669 return NULL__null;
4670}
4671
4672clang::DeclContext *
4673SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4674{
4675 clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4676 if (clang_decl_ctx)
4677 return clang_decl_ctx;
4678 // If this DIE has a specification, or an abstract origin, then trace to those.
4679
4680 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET(~(dw_offset_t)0));
4681 if (die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
4682 return GetClangDeclContextForDIEOffset (sc, die_offset);
4683
4684 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET(~(dw_offset_t)0));
4685 if (die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
4686 return GetClangDeclContextForDIEOffset (sc, die_offset);
4687
4688 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO(1u << 1)));
4689 if (log)
4690 GetObjectFile()->GetModule()->LogMessage(log, "SymbolFileDWARF::GetClangDeclContextForDIE (die = 0x%8.8x) %s '%s'", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), die->GetName(this, cu));
4691 // This is the DIE we want. Parse it, then query our map.
4692 bool assert_not_being_parsed = true;
4693 ResolveTypeUID (cu, die, assert_not_being_parsed);
4694
4695 clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
4696
4697 return clang_decl_ctx;
4698}
4699
4700clang::DeclContext *
4701SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy)
4702{
4703 if (m_clang_tu_decl == NULL__null)
4704 m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl();
4705
4706 const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
4707
4708 if (decl_ctx_die_copy)
4709 *decl_ctx_die_copy = decl_ctx_die;
4710
4711 if (decl_ctx_die)
4712 {
4713
4714 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die);
4715 if (pos != m_die_to_decl_ctx.end())
4716 return pos->second;
4717
4718 switch (decl_ctx_die->Tag())
4719 {
4720 case DW_TAG_compile_unit:
4721 return m_clang_tu_decl;
4722
4723 case DW_TAG_namespace:
4724 return ResolveNamespaceDIE (cu, decl_ctx_die);
4725 break;
4726
4727 case DW_TAG_structure_type:
4728 case DW_TAG_union_type:
4729 case DW_TAG_class_type:
4730 {
4731 Type* type = ResolveType (cu, decl_ctx_die);
4732 if (type)
4733 {
4734 clang::DeclContext *decl_ctx = type->GetClangForwardType().GetDeclContextForType ();
4735 if (decl_ctx)
4736 {
4737 LinkDeclContextToDIE (decl_ctx, decl_ctx_die);
4738 if (decl_ctx)
4739 return decl_ctx;
4740 }
4741 }
4742 }
4743 break;
4744
4745 default:
4746 break;
4747 }
4748 }
4749 return m_clang_tu_decl;
4750}
4751
4752
4753const DWARFDebugInfoEntry *
4754SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
4755{
4756 if (cu && die)
4757 {
4758 const DWARFDebugInfoEntry * const decl_die = die;
4759
4760 while (die != NULL__null)
4761 {
4762 // If this is the original DIE that we are searching for a declaration
4763 // for, then don't look in the cache as we don't want our own decl
4764 // context to be our decl context...
4765 if (decl_die != die)
4766 {
4767 switch (die->Tag())
4768 {
4769 case DW_TAG_compile_unit:
4770 case DW_TAG_namespace:
4771 case DW_TAG_structure_type:
4772 case DW_TAG_union_type:
4773 case DW_TAG_class_type:
4774 return die;
4775
4776 default:
4777 break;
4778 }
4779 }
4780
4781 dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET(~(dw_offset_t)0));
4782 if (die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
4783 {
4784 DWARFCompileUnit *spec_cu = cu;
4785 const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu);
4786 const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die);
4787 if (spec_die_decl_ctx_die)
4788 return spec_die_decl_ctx_die;
4789 }
4790
4791 die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET(~(dw_offset_t)0));
4792 if (die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
4793 {
4794 DWARFCompileUnit *abs_cu = cu;
4795 const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu);
4796 const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die);
4797 if (abs_die_decl_ctx_die)
4798 return abs_die_decl_ctx_die;
4799 }
4800
4801 die = die->GetParent();
4802 }
4803 }
4804 return NULL__null;
4805}
4806
4807
4808Symbol *
4809SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name)
4810{
4811 Symbol *objc_class_symbol = NULL__null;
4812 if (m_obj_file)
4813 {
4814 Symtab *symtab = m_obj_file->GetSymtab ();
4815 if (symtab)
4816 {
4817 objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name,
4818 eSymbolTypeObjCClass,
4819 Symtab::eDebugNo,
4820 Symtab::eVisibilityAny);
4821 }
4822 }
4823 return objc_class_symbol;
4824}
4825
4826// Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't
4827// then we can end up looking through all class types for a complete type and never find
4828// the full definition. We need to know if this attribute is supported, so we determine
4829// this here and cache th result. We also need to worry about the debug map DWARF file
4830// if we are doing darwin DWARF in .o file debugging.
4831bool
4832SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu)
4833{
4834 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate)
4835 {
4836 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo;
4837 if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type())
4838 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4839 else
4840 {
4841 DWARFDebugInfo* debug_info = DebugInfo();
4842 const uint32_t num_compile_units = GetNumCompileUnits();
4843 for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
4844 {
4845 DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
4846 if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type())
4847 {
4848 m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
4849 break;
4850 }
4851 }
4852 }
4853 if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && GetDebugMapSymfile ())
4854 return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this);
4855 }
4856 return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes;
4857}
4858
4859// This function can be used when a DIE is found that is a forward declaration
4860// DIE and we want to try and find a type that has the complete definition.
4861TypeSP
4862SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die,
4863 const ConstString &type_name,
4864 bool must_be_implementation)
4865{
4866
4867 TypeSP type_sp;
4868
4869 if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name)))
4870 return type_sp;
4871
4872 DIEArray die_offsets;
4873
4874 if (m_using_apple_tables)
4875 {
4876 if (m_apple_types_ap.get())
4877 {
4878 const char *name_cstr = type_name.GetCString();
4879 m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation);
4880 }
4881 }
4882 else
4883 {
4884 if (!m_indexed)
4885 Index ();
4886
4887 m_type_index.Find (type_name, die_offsets);
4888 }
4889
4890 const size_t num_matches = die_offsets.size();
4891
4892 DWARFCompileUnit* type_cu = NULL__null;
4893 const DWARFDebugInfoEntry* type_die = NULL__null;
4894 if (num_matches)
4895 {
4896 DWARFDebugInfo* debug_info = DebugInfo();
4897 for (size_t i=0; i<num_matches; ++i)
4898 {
4899 const dw_offset_t die_offset = die_offsets[i];
4900 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
4901
4902 if (type_die)
4903 {
4904 bool try_resolving_type = false;
4905
4906 // Don't try and resolve the DIE we are looking for with the DIE itself!
4907 if (type_die != die)
4908 {
4909 switch (type_die->Tag())
4910 {
4911 case DW_TAG_class_type:
4912 case DW_TAG_structure_type:
4913 try_resolving_type = true;
4914 break;
4915 default:
4916 break;
4917 }
4918 }
4919
4920 if (try_resolving_type)
4921 {
4922 if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type())
4923 try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0);
4924
4925 if (try_resolving_type)
4926 {
4927 Type *resolved_type = ResolveType (type_cu, type_die, false);
4928 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
4929 {
4930 DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n",
4931 MakeUserID(die->GetOffset()),
4932 m_obj_file->GetFileSpec().GetFilename().AsCString(),
4933 MakeUserID(type_die->GetOffset()),
4934 MakeUserID(type_cu->GetOffset()));
4935
4936 if (die)
4937 m_die_to_type[die] = resolved_type;
4938 type_sp = resolved_type->shared_from_this();
4939 break;
4940 }
4941 }
4942 }
4943 }
4944 else
4945 {
4946 if (m_using_apple_tables)
4947 {
4948 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
4949 die_offset, type_name.GetCString());
4950 }
4951 }
4952
4953 }
4954 }
4955 return type_sp;
4956}
4957
4958
4959//----------------------------------------------------------------------
4960// This function helps to ensure that the declaration contexts match for
4961// two different DIEs. Often times debug information will refer to a
4962// forward declaration of a type (the equivalent of "struct my_struct;".
4963// There will often be a declaration of that type elsewhere that has the
4964// full definition. When we go looking for the full type "my_struct", we
4965// will find one or more matches in the accelerator tables and we will
4966// then need to make sure the type was in the same declaration context
4967// as the original DIE. This function can efficiently compare two DIEs
4968// and will return true when the declaration context matches, and false
4969// when they don't.
4970//----------------------------------------------------------------------
4971bool
4972SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1,
4973 DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2)
4974{
4975 if (die1 == die2)
4976 return true;
4977
4978#if defined (LLDB_CONFIGURATION_DEBUG)
4979 // You can't and shouldn't call this function with a compile unit from
4980 // two different SymbolFileDWARF instances.
4981 assert (DebugInfo()->ContainsCompileUnit (cu1))((DebugInfo()->ContainsCompileUnit (cu1)) ? static_cast<
void> (0) : __assert_fail ("DebugInfo()->ContainsCompileUnit (cu1)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 4981, __PRETTY_FUNCTION__))
;
4982 assert (DebugInfo()->ContainsCompileUnit (cu2))((DebugInfo()->ContainsCompileUnit (cu2)) ? static_cast<
void> (0) : __assert_fail ("DebugInfo()->ContainsCompileUnit (cu2)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 4982, __PRETTY_FUNCTION__))
;
4983#endif
4984
4985 DWARFDIECollection decl_ctx_1;
4986 DWARFDIECollection decl_ctx_2;
4987 //The declaration DIE stack is a stack of the declaration context
4988 // DIEs all the way back to the compile unit. If a type "T" is
4989 // declared inside a class "B", and class "B" is declared inside
4990 // a class "A" and class "A" is in a namespace "lldb", and the
4991 // namespace is in a compile unit, there will be a stack of DIEs:
4992 //
4993 // [0] DW_TAG_class_type for "B"
4994 // [1] DW_TAG_class_type for "A"
4995 // [2] DW_TAG_namespace for "lldb"
4996 // [3] DW_TAG_compile_unit for the source file.
4997 //
4998 // We grab both contexts and make sure that everything matches
4999 // all the way back to the compiler unit.
5000
5001 // First lets grab the decl contexts for both DIEs
5002 die1->GetDeclContextDIEs (this, cu1, decl_ctx_1);
5003 die2->GetDeclContextDIEs (this, cu2, decl_ctx_2);
5004 // Make sure the context arrays have the same size, otherwise
5005 // we are done
5006 const size_t count1 = decl_ctx_1.Size();
5007 const size_t count2 = decl_ctx_2.Size();
5008 if (count1 != count2)
5009 return false;
5010
5011 // Make sure the DW_TAG values match all the way back up the
5012 // compile unit. If they don't, then we are done.
5013 const DWARFDebugInfoEntry *decl_ctx_die1;
5014 const DWARFDebugInfoEntry *decl_ctx_die2;
5015 size_t i;
5016 for (i=0; i<count1; i++)
5017 {
5018 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
5019 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
5020 if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag())
5021 return false;
5022 }
5023#if defined LLDB_CONFIGURATION_DEBUG
5024
5025 // Make sure the top item in the decl context die array is always
5026 // DW_TAG_compile_unit. If it isn't then something went wrong in
5027 // the DWARFDebugInfoEntry::GetDeclContextDIEs() function...
5028 assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit)((decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit
) ? static_cast<void> (0) : __assert_fail ("decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 5028, __PRETTY_FUNCTION__))
;
5029
5030#endif
5031 // Always skip the compile unit when comparing by only iterating up to
5032 // "count - 1". Here we compare the names as we go.
5033 for (i=0; i<count1 - 1; i++)
5034 {
5035 decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
5036 decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
5037 const char *name1 = decl_ctx_die1->GetName(this, cu1);
5038 const char *name2 = decl_ctx_die2->GetName(this, cu2);
5039 // If the string was from a DW_FORM_strp, then the pointer will often
5040 // be the same!
5041 if (name1 == name2)
5042 continue;
5043
5044 // Name pointers are not equal, so only compare the strings
5045 // if both are not NULL.
5046 if (name1 && name2)
5047 {
5048 // If the strings don't compare, we are done...
5049 if (strcmp(name1, name2) != 0)
5050 return false;
5051 }
5052 else
5053 {
5054 // One name was NULL while the other wasn't
5055 return false;
5056 }
5057 }
5058 // We made it through all of the checks and the declaration contexts
5059 // are equal.
5060 return true;
5061}
5062
5063// This function can be used when a DIE is found that is a forward declaration
5064// DIE and we want to try and find a type that has the complete definition.
5065// "cu" and "die" must be from this SymbolFileDWARF
5066TypeSP
5067SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu,
5068 const DWARFDebugInfoEntry *die,
5069 const ConstString &type_name)
5070{
5071 TypeSP type_sp;
5072
5073#if defined (LLDB_CONFIGURATION_DEBUG)
5074 // You can't and shouldn't call this function with a compile unit from
5075 // another SymbolFileDWARF instance.
5076 assert (DebugInfo()->ContainsCompileUnit (cu))((DebugInfo()->ContainsCompileUnit (cu)) ? static_cast<
void> (0) : __assert_fail ("DebugInfo()->ContainsCompileUnit (cu)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 5076, __PRETTY_FUNCTION__))
;
5077#endif
5078
5079 if (cu == NULL__null || die == NULL__null || !type_name)
5080 return type_sp;
5081
5082 std::string qualified_name;
5083
5084 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION(1u << 7)|DWARF_LOG_LOOKUPS(1u << 6)));
5085 if (log)
5086 {
5087 die->GetQualifiedName(this, cu, qualified_name);
5088 GetObjectFile()->GetModule()->LogMessage (log,
5089 "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x (%s), name='%s')",
5090 die->GetOffset(),
5091 qualified_name.c_str(),
5092 type_name.GetCString());
5093 }
5094
5095 DIEArray die_offsets;
5096
5097 if (m_using_apple_tables)
5098 {
5099 if (m_apple_types_ap.get())
5100 {
5101 const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5102 const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5103 if (has_tag && has_qualified_name_hash)
5104 {
5105 if (qualified_name.empty())
5106 die->GetQualifiedName(this, cu, qualified_name);
5107
5108 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name.c_str());
5109 if (log)
5110 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5111 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), die->Tag(), qualified_name_hash, die_offsets);
5112 }
5113 else if (has_tag)
5114 {
5115 if (log)
5116 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5117 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets);
5118 }
5119 else
5120 {
5121 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5122 }
5123 }
5124 }
5125 else
5126 {
5127 if (!m_indexed)
5128 Index ();
5129
5130 m_type_index.Find (type_name, die_offsets);
5131 }
5132
5133 const size_t num_matches = die_offsets.size();
5134
5135 const dw_tag_t die_tag = die->Tag();
5136
5137 DWARFCompileUnit* type_cu = NULL__null;
5138 const DWARFDebugInfoEntry* type_die = NULL__null;
5139 if (num_matches)
5140 {
5141 DWARFDebugInfo* debug_info = DebugInfo();
5142 for (size_t i=0; i<num_matches; ++i)
5143 {
5144 const dw_offset_t die_offset = die_offsets[i];
5145 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5146
5147 if (type_die)
5148 {
5149 bool try_resolving_type = false;
5150
5151 // Don't try and resolve the DIE we are looking for with the DIE itself!
5152 if (type_die != die)
5153 {
5154 const dw_tag_t type_die_tag = type_die->Tag();
5155 // Make sure the tags match
5156 if (type_die_tag == die_tag)
5157 {
5158 // The tags match, lets try resolving this type
5159 try_resolving_type = true;
5160 }
5161 else
5162 {
5163 // The tags don't match, but we need to watch our for a
5164 // forward declaration for a struct and ("struct foo")
5165 // ends up being a class ("class foo { ... };") or
5166 // vice versa.
5167 switch (type_die_tag)
5168 {
5169 case DW_TAG_class_type:
5170 // We had a "class foo", see if we ended up with a "struct foo { ... };"
5171 try_resolving_type = (die_tag == DW_TAG_structure_type);
5172 break;
5173 case DW_TAG_structure_type:
5174 // We had a "struct foo", see if we ended up with a "class foo { ... };"
5175 try_resolving_type = (die_tag == DW_TAG_class_type);
5176 break;
5177 default:
5178 // Tags don't match, don't event try to resolve
5179 // using this type whose name matches....
5180 break;
5181 }
5182 }
5183 }
5184
5185 if (try_resolving_type)
5186 {
5187 if (log)
5188 {
5189 std::string qualified_name;
5190 type_die->GetQualifiedName(this, cu, qualified_name);
5191 GetObjectFile()->GetModule()->LogMessage (log,
5192 "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') trying die=0x%8.8x (%s)",
5193 die->GetOffset(),
5194 type_name.GetCString(),
5195 type_die->GetOffset(),
5196 qualified_name.c_str());
5197 }
5198
5199 // Make sure the decl contexts match all the way up
5200 if (DIEDeclContextsMatch(cu, die, type_cu, type_die))
5201 {
5202 Type *resolved_type = ResolveType (type_cu, type_die, false);
5203 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
5204 {
5205 DEBUG_PRINTF ("resolved 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ") from %s to 0x%8.8" PRIx64 " (cu 0x%8.8" PRIx64 ")\n",
5206 MakeUserID(die->GetOffset()),
5207 MakeUserID(cu->GetOffset()),
5208 m_obj_file->GetFileSpec().GetFilename().AsCString(),
5209 MakeUserID(type_die->GetOffset()),
5210 MakeUserID(type_cu->GetOffset()));
5211
5212 m_die_to_type[die] = resolved_type;
5213 type_sp = resolved_type->shared_from_this();
5214 break;
5215 }
5216 }
5217 }
5218 else
5219 {
5220 if (log)
5221 {
5222 std::string qualified_name;
5223 type_die->GetQualifiedName(this, cu, qualified_name);
5224 GetObjectFile()->GetModule()->LogMessage (log,
5225 "SymbolFileDWARF::FindDefinitionTypeForDIE(die=0x%8.8x, name='%s') ignoring die=0x%8.8x (%s)",
5226 die->GetOffset(),
5227 type_name.GetCString(),
5228 type_die->GetOffset(),
5229 qualified_name.c_str());
5230 }
5231 }
5232 }
5233 else
5234 {
5235 if (m_using_apple_tables)
5236 {
5237 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5238 die_offset, type_name.GetCString());
5239 }
5240 }
5241
5242 }
5243 }
5244 return type_sp;
5245}
5246
5247TypeSP
5248SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx)
5249{
5250 TypeSP type_sp;
5251
5252 const uint32_t dwarf_decl_ctx_count = dwarf_decl_ctx.GetSize();
5253 if (dwarf_decl_ctx_count > 0)
5254 {
5255 const ConstString type_name(dwarf_decl_ctx[0].name);
5256 const dw_tag_t tag = dwarf_decl_ctx[0].tag;
5257
5258 if (type_name)
5259 {
5260 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_TYPE_COMPLETION(1u << 7)|DWARF_LOG_LOOKUPS(1u << 6)));
5261 if (log)
5262 {
5263 GetObjectFile()->GetModule()->LogMessage (log,
5264 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s')",
5265 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5266 dwarf_decl_ctx.GetQualifiedName());
5267 }
5268
5269 DIEArray die_offsets;
5270
5271 if (m_using_apple_tables)
5272 {
5273 if (m_apple_types_ap.get())
5274 {
5275 const bool has_tag = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeTag);
5276 const bool has_qualified_name_hash = m_apple_types_ap->GetHeader().header_data.ContainsAtom (DWARFMappedHash::eAtomTypeQualNameHash);
5277 if (has_tag && has_qualified_name_hash)
5278 {
5279 const char *qualified_name = dwarf_decl_ctx.GetQualifiedName();
5280 const uint32_t qualified_name_hash = MappedHash::HashStringUsingDJB (qualified_name);
5281 if (log)
5282 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTagAndQualifiedNameHash()");
5283 m_apple_types_ap->FindByNameAndTagAndQualifiedNameHash (type_name.GetCString(), tag, qualified_name_hash, die_offsets);
5284 }
5285 else if (has_tag)
5286 {
5287 if (log)
5288 GetObjectFile()->GetModule()->LogMessage (log,"FindByNameAndTag()");
5289 m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), tag, die_offsets);
5290 }
5291 else
5292 {
5293 m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
5294 }
5295 }
5296 }
5297 else
5298 {
5299 if (!m_indexed)
5300 Index ();
5301
5302 m_type_index.Find (type_name, die_offsets);
5303 }
5304
5305 const size_t num_matches = die_offsets.size();
5306
5307
5308 DWARFCompileUnit* type_cu = NULL__null;
5309 const DWARFDebugInfoEntry* type_die = NULL__null;
5310 if (num_matches)
5311 {
5312 DWARFDebugInfo* debug_info = DebugInfo();
5313 for (size_t i=0; i<num_matches; ++i)
5314 {
5315 const dw_offset_t die_offset = die_offsets[i];
5316 type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
5317
5318 if (type_die)
5319 {
5320 bool try_resolving_type = false;
5321
5322 // Don't try and resolve the DIE we are looking for with the DIE itself!
5323 const dw_tag_t type_tag = type_die->Tag();
5324 // Make sure the tags match
5325 if (type_tag == tag)
5326 {
5327 // The tags match, lets try resolving this type
5328 try_resolving_type = true;
5329 }
5330 else
5331 {
5332 // The tags don't match, but we need to watch our for a
5333 // forward declaration for a struct and ("struct foo")
5334 // ends up being a class ("class foo { ... };") or
5335 // vice versa.
5336 switch (type_tag)
5337 {
5338 case DW_TAG_class_type:
5339 // We had a "class foo", see if we ended up with a "struct foo { ... };"
5340 try_resolving_type = (tag == DW_TAG_structure_type);
5341 break;
5342 case DW_TAG_structure_type:
5343 // We had a "struct foo", see if we ended up with a "class foo { ... };"
5344 try_resolving_type = (tag == DW_TAG_class_type);
5345 break;
5346 default:
5347 // Tags don't match, don't event try to resolve
5348 // using this type whose name matches....
5349 break;
5350 }
5351 }
5352
5353 if (try_resolving_type)
5354 {
5355 DWARFDeclContext type_dwarf_decl_ctx;
5356 type_die->GetDWARFDeclContext (this, type_cu, type_dwarf_decl_ctx);
5357
5358 if (log)
5359 {
5360 GetObjectFile()->GetModule()->LogMessage (log,
5361 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') trying die=0x%8.8x (%s)",
5362 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5363 dwarf_decl_ctx.GetQualifiedName(),
5364 type_die->GetOffset(),
5365 type_dwarf_decl_ctx.GetQualifiedName());
5366 }
5367
5368 // Make sure the decl contexts match all the way up
5369 if (dwarf_decl_ctx == type_dwarf_decl_ctx)
5370 {
5371 Type *resolved_type = ResolveType (type_cu, type_die, false);
5372 if (resolved_type && resolved_type != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
5373 {
5374 type_sp = resolved_type->shared_from_this();
5375 break;
5376 }
5377 }
5378 }
5379 else
5380 {
5381 if (log)
5382 {
5383 std::string qualified_name;
5384 type_die->GetQualifiedName(this, type_cu, qualified_name);
5385 GetObjectFile()->GetModule()->LogMessage (log,
5386 "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%s, qualified-name='%s') ignoring die=0x%8.8x (%s)",
5387 DW_TAG_value_to_name(dwarf_decl_ctx[0].tag),
5388 dwarf_decl_ctx.GetQualifiedName(),
5389 type_die->GetOffset(),
5390 qualified_name.c_str());
5391 }
5392 }
5393 }
5394 else
5395 {
5396 if (m_using_apple_tables)
5397 {
5398 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
5399 die_offset, type_name.GetCString());
5400 }
5401 }
5402
5403 }
5404 }
5405 }
5406 }
5407 return type_sp;
5408}
5409
5410bool
5411SymbolFileDWARF::CopyUniqueClassMethodTypes (SymbolFileDWARF *src_symfile,
5412 Type *class_type,
5413 DWARFCompileUnit* src_cu,
5414 const DWARFDebugInfoEntry *src_class_die,
5415 DWARFCompileUnit* dst_cu,
5416 const DWARFDebugInfoEntry *dst_class_die,
5417 DWARFDIECollection &failures)
5418{
5419 if (!class_type || !src_cu || !src_class_die || !dst_cu || !dst_class_die)
5420 return false;
5421 if (src_class_die->Tag() != dst_class_die->Tag())
5422 return false;
5423
5424 // We need to complete the class type so we can get all of the method types
5425 // parsed so we can then unique those types to their equivalent counterparts
5426 // in "dst_cu" and "dst_class_die"
5427 class_type->GetClangFullType();
5428
5429 const DWARFDebugInfoEntry *src_die;
5430 const DWARFDebugInfoEntry *dst_die;
5431 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die;
5432 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die;
5433 UniqueCStringMap<const DWARFDebugInfoEntry *> src_name_to_die_artificial;
5434 UniqueCStringMap<const DWARFDebugInfoEntry *> dst_name_to_die_artificial;
5435 for (src_die = src_class_die->GetFirstChild(); src_die != NULL__null; src_die = src_die->GetSibling())
5436 {
5437 if (src_die->Tag() == DW_TAG_subprogram)
5438 {
5439 // Make sure this is a declaration and not a concrete instance by looking
5440 // for DW_AT_declaration set to 1. Sometimes concrete function instances
5441 // are placed inside the class definitions and shouldn't be included in
5442 // the list of things are are tracking here.
5443 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_declaration, 0) == 1)
5444 {
5445 const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5446 if (src_name)
5447 {
5448 ConstString src_const_name(src_name);
5449 if (src_die->GetAttributeValueAsUnsigned(src_symfile, src_cu, DW_AT_artificial, 0))
5450 src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die);
5451 else
5452 src_name_to_die.Append(src_const_name.GetCString(), src_die);
5453 }
5454 }
5455 }
5456 }
5457 for (dst_die = dst_class_die->GetFirstChild(); dst_die != NULL__null; dst_die = dst_die->GetSibling())
5458 {
5459 if (dst_die->Tag() == DW_TAG_subprogram)
5460 {
5461 // Make sure this is a declaration and not a concrete instance by looking
5462 // for DW_AT_declaration set to 1. Sometimes concrete function instances
5463 // are placed inside the class definitions and shouldn't be included in
5464 // the list of things are are tracking here.
5465 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_declaration, 0) == 1)
5466 {
5467 const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5468 if (dst_name)
5469 {
5470 ConstString dst_const_name(dst_name);
5471 if (dst_die->GetAttributeValueAsUnsigned(this, dst_cu, DW_AT_artificial, 0))
5472 dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die);
5473 else
5474 dst_name_to_die.Append(dst_const_name.GetCString(), dst_die);
5475 }
5476 }
5477 }
5478 }
5479 const uint32_t src_size = src_name_to_die.GetSize ();
5480 const uint32_t dst_size = dst_name_to_die.GetSize ();
5481 Log *log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO(1u << 1) | DWARF_LOG_TYPE_COMPLETION(1u << 7)));
5482
5483 // Is everything kosher so we can go through the members at top speed?
5484 bool fast_path = true;
5485
5486 if (src_size != dst_size)
5487 {
5488 if (src_size != 0 && dst_size != 0)
5489 {
5490 if (log)
5491 log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, but they didn't have the same size (src=%d, dst=%d)",
5492 src_class_die->GetOffset(),
5493 dst_class_die->GetOffset(),
5494 src_size,
5495 dst_size);
5496 }
5497
5498 fast_path = false;
5499 }
5500
5501 uint32_t idx;
5502
5503 if (fast_path)
5504 {
5505 for (idx = 0; idx < src_size; ++idx)
5506 {
5507 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5508 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5509
5510 if (src_die->Tag() != dst_die->Tag())
5511 {
5512 if (log)
5513 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)",
5514 src_class_die->GetOffset(),
5515 dst_class_die->GetOffset(),
5516 src_die->GetOffset(),
5517 DW_TAG_value_to_name(src_die->Tag()),
5518 dst_die->GetOffset(),
5519 DW_TAG_value_to_name(src_die->Tag()));
5520 fast_path = false;
5521 }
5522
5523 const char *src_name = src_die->GetMangledName (src_symfile, src_cu);
5524 const char *dst_name = dst_die->GetMangledName (this, dst_cu);
5525
5526 // Make sure the names match
5527 if (src_name == dst_name || (strcmp (src_name, dst_name) == 0))
5528 continue;
5529
5530 if (log)
5531 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)",
5532 src_class_die->GetOffset(),
5533 dst_class_die->GetOffset(),
5534 src_die->GetOffset(),
5535 src_name,
5536 dst_die->GetOffset(),
5537 dst_name);
5538
5539 fast_path = false;
5540 }
5541 }
5542
5543 // Now do the work of linking the DeclContexts and Types.
5544 if (fast_path)
5545 {
5546 // We can do this quickly. Just run across the tables index-for-index since
5547 // we know each node has matching names and tags.
5548 for (idx = 0; idx < src_size; ++idx)
5549 {
5550 src_die = src_name_to_die.GetValueAtIndexUnchecked (idx);
5551 dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx);
5552
5553 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5554 if (src_decl_ctx)
5555 {
5556 if (log)
5557 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
5558 static_cast<void*>(src_decl_ctx),
5559 src_die->GetOffset(), dst_die->GetOffset());
5560 LinkDeclContextToDIE (src_decl_ctx, dst_die);
5561 }
5562 else
5563 {
5564 if (log)
5565 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found",
5566 src_die->GetOffset(), dst_die->GetOffset());
5567 }
5568
5569 Type *src_child_type = m_die_to_type[src_die];
5570 if (src_child_type)
5571 {
5572 if (log)
5573 log->Printf ("uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x",
5574 static_cast<void*>(src_child_type),
5575 src_child_type->GetID(),
5576 src_die->GetOffset(), dst_die->GetOffset());
5577 m_die_to_type[dst_die] = src_child_type;
5578 }
5579 else
5580 {
5581 if (log)
5582 log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5583 }
5584 }
5585 }
5586 else
5587 {
5588 // We must do this slowly. For each member of the destination, look
5589 // up a member in the source with the same name, check its tag, and
5590 // unique them if everything matches up. Report failures.
5591
5592 if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty())
5593 {
5594 src_name_to_die.Sort();
5595
5596 for (idx = 0; idx < dst_size; ++idx)
5597 {
5598 const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx);
5599 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
5600 src_die = src_name_to_die.Find(dst_name, NULL__null);
5601
5602 if (src_die && (src_die->Tag() == dst_die->Tag()))
5603 {
5604 clang::DeclContext *src_decl_ctx = src_symfile->m_die_to_decl_ctx[src_die];
5605 if (src_decl_ctx)
5606 {
5607 if (log)
5608 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
5609 static_cast<void*>(src_decl_ctx),
5610 src_die->GetOffset(),
5611 dst_die->GetOffset());
5612 LinkDeclContextToDIE (src_decl_ctx, dst_die);
5613 }
5614 else
5615 {
5616 if (log)
5617 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5618 }
5619
5620 Type *src_child_type = m_die_to_type[src_die];
5621 if (src_child_type)
5622 {
5623 if (log)
5624 log->Printf ("uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x",
5625 static_cast<void*>(src_child_type),
5626 src_child_type->GetID(),
5627 src_die->GetOffset(),
5628 dst_die->GetOffset());
5629 m_die_to_type[dst_die] = src_child_type;
5630 }
5631 else
5632 {
5633 if (log)
5634 log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5635 }
5636 }
5637 else
5638 {
5639 if (log)
5640 log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die->GetOffset());
5641
5642 failures.Append(dst_die);
5643 }
5644 }
5645 }
5646 }
5647
5648 const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize ();
5649 const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize ();
5650
5651 UniqueCStringMap<const DWARFDebugInfoEntry *> name_to_die_artificial_not_in_src;
5652
5653 if (src_size_artificial && dst_size_artificial)
5654 {
5655 dst_name_to_die_artificial.Sort();
5656
5657 for (idx = 0; idx < src_size_artificial; ++idx)
5658 {
5659 const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx);
5660 src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5661 dst_die = dst_name_to_die_artificial.Find(src_name_artificial, NULL__null);
5662
5663 if (dst_die)
5664 {
5665 // Both classes have the artificial types, link them
5666 clang::DeclContext *src_decl_ctx = m_die_to_decl_ctx[src_die];
5667 if (src_decl_ctx)
5668 {
5669 if (log)
5670 log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
5671 static_cast<void*>(src_decl_ctx),
5672 src_die->GetOffset(), dst_die->GetOffset());
5673 LinkDeclContextToDIE (src_decl_ctx, dst_die);
5674 }
5675 else
5676 {
5677 if (log)
5678 log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5679 }
5680
5681 Type *src_child_type = m_die_to_type[src_die];
5682 if (src_child_type)
5683 {
5684 if (log)
5685 log->Printf ("uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x",
5686 static_cast<void*>(src_child_type),
5687 src_child_type->GetID(),
5688 src_die->GetOffset(), dst_die->GetOffset());
5689 m_die_to_type[dst_die] = src_child_type;
5690 }
5691 else
5692 {
5693 if (log)
5694 log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die->GetOffset(), dst_die->GetOffset());
5695 }
5696 }
5697 }
5698 }
5699
5700 if (dst_size_artificial)
5701 {
5702 for (idx = 0; idx < dst_size_artificial; ++idx)
5703 {
5704 const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx);
5705 dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx);
5706 if (log)
5707 log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die->GetOffset(), dst_name_artificial);
5708
5709 failures.Append(dst_die);
5710 }
5711 }
5712
5713 return (failures.Size() != 0);
5714}
5715
5716TypeSP
5717SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr)
5718{
5719 TypeSP type_sp;
5720
5721 if (type_is_new_ptr)
5722 *type_is_new_ptr = false;
5723
5724#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE)
5725 static DIEStack g_die_stack;
5726 DIEStack::ScopedPopper scoped_die_logger(g_die_stack);
5727#endif
5728
5729 AccessType accessibility = eAccessNone;
5730 if (die != NULL__null)
5731 {
5732 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO(1u << 1)));
5733 if (log)
5734 {
5735 const DWARFDebugInfoEntry *context_die;
5736 clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die);
5737
5738 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
5739 die->GetOffset(),
5740 static_cast<void*>(context),
5741 context_die->GetOffset(),
5742 DW_TAG_value_to_name(die->Tag()),
5743 die->GetName(this, dwarf_cu));
5744
5745#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE)
5746 scoped_die_logger.Push (dwarf_cu, die);
5747 g_die_stack.LogDIEs(log, this);
5748#endif
5749 }
5750//
5751// Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
5752// if (log && dwarf_cu)
5753// {
5754// StreamString s;
5755// die->DumpLocation (this, dwarf_cu, s);
5756// GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
5757//
5758// }
5759
5760 Type *type_ptr = m_die_to_type.lookup (die);
5761 TypeList* type_list = GetTypeList();
5762 if (type_ptr == NULL__null)
5763 {
5764 ClangASTContext &ast = GetClangASTContext();
5765 if (type_is_new_ptr)
5766 *type_is_new_ptr = true;
5767
5768 const dw_tag_t tag = die->Tag();
5769
5770 bool is_forward_declaration = false;
5771 DWARFDebugInfoEntry::Attributes attributes;
5772 const char *type_name_cstr = NULL__null;
5773 ConstString type_name_const_str;
5774 Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
5775 uint64_t byte_size = 0;
5776 Declaration decl;
5777
5778 Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
5779 ClangASTType clang_type;
5780 DWARFFormValue form_value;
5781
5782 dw_attr_t attr;
5783
5784 switch (tag)
5785 {
5786 case DW_TAG_base_type:
5787 case DW_TAG_pointer_type:
5788 case DW_TAG_reference_type:
5789 case DW_TAG_rvalue_reference_type:
5790 case DW_TAG_typedef:
5791 case DW_TAG_const_type:
5792 case DW_TAG_restrict_type:
5793 case DW_TAG_volatile_type:
5794 case DW_TAG_unspecified_type:
5795 {
5796 // Set a bit that lets us know that we are currently parsing this
5797 m_die_to_type[die] = DIE_IS_BEING_PARSED((lldb_private::Type*)1);
5798
5799 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
5800 uint32_t encoding = 0;
5801 lldb::user_id_t encoding_uid = LLDB_INVALID_UID(18446744073709551615UL);
5802
5803 if (num_attributes > 0)
5804 {
5805 uint32_t i;
5806 for (i=0; i<num_attributes; ++i)
5807 {
5808 attr = attributes.AttributeAtIndex(i);
5809 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5810 {
5811 switch (attr)
5812 {
5813 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
5814 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
5815 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
5816 case DW_AT_name:
5817
5818 type_name_cstr = form_value.AsCString(&get_debug_str_data());
5819 // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't
5820 // include the "&"...
5821 if (tag == DW_TAG_reference_type)
5822 {
5823 if (strchr (type_name_cstr, '&') == NULL__null)
5824 type_name_cstr = NULL__null;
5825 }
5826 if (type_name_cstr)
5827 type_name_const_str.SetCString(type_name_cstr);
5828 break;
5829 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break;
5830 case DW_AT_encoding: encoding = form_value.Unsigned(); break;
5831 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break;
5832 default:
5833 case DW_AT_sibling:
5834 break;
5835 }
5836 }
5837 }
5838 }
5839
5840 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid);
5841
5842 switch (tag)
5843 {
5844 default:
5845 break;
5846
5847 case DW_TAG_unspecified_type:
5848 if (strcmp(type_name_cstr, "nullptr_t") == 0 ||
5849 strcmp(type_name_cstr, "decltype(nullptr)") == 0 )
5850 {
5851 resolve_state = Type::eResolveStateFull;
5852 clang_type = ast.GetBasicType(eBasicTypeNullPtr);
5853 break;
5854 }
5855 // Fall through to base type below in case we can handle the type there...
5856
5857 case DW_TAG_base_type:
5858 resolve_state = Type::eResolveStateFull;
5859 clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr,
5860 encoding,
5861 byte_size * 8);
5862 break;
5863
5864 case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break;
5865 case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break;
5866 case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break;
5867 case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break;
5868 case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break;
5869 case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break;
5870 case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break;
5871 }
5872
5873 if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL__null)
5874 {
5875 bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus);
5876
5877 if (translation_unit_is_objc)
5878 {
5879 if (type_name_cstr != NULL__null)
5880 {
5881 static ConstString g_objc_type_name_id("id");
5882 static ConstString g_objc_type_name_Class("Class");
5883 static ConstString g_objc_type_name_selector("SEL");
5884
5885 if (type_name_const_str == g_objc_type_name_id)
5886 {
5887 if (log)
5888 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.",
5889 die->GetOffset(),
5890 DW_TAG_value_to_name(die->Tag()),
5891 die->GetName(this, dwarf_cu));
5892 clang_type = ast.GetBasicType(eBasicTypeObjCID);
5893 encoding_data_type = Type::eEncodingIsUID;
5894 encoding_uid = LLDB_INVALID_UID(18446744073709551615UL);
5895 resolve_state = Type::eResolveStateFull;
5896
5897 }
5898 else if (type_name_const_str == g_objc_type_name_Class)
5899 {
5900 if (log)
5901 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.",
5902 die->GetOffset(),
5903 DW_TAG_value_to_name(die->Tag()),
5904 die->GetName(this, dwarf_cu));
5905 clang_type = ast.GetBasicType(eBasicTypeObjCClass);
5906 encoding_data_type = Type::eEncodingIsUID;
5907 encoding_uid = LLDB_INVALID_UID(18446744073709551615UL);
5908 resolve_state = Type::eResolveStateFull;
5909 }
5910 else if (type_name_const_str == g_objc_type_name_selector)
5911 {
5912 if (log)
5913 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.",
5914 die->GetOffset(),
5915 DW_TAG_value_to_name(die->Tag()),
5916 die->GetName(this, dwarf_cu));
5917 clang_type = ast.GetBasicType(eBasicTypeObjCSel);
5918 encoding_data_type = Type::eEncodingIsUID;
5919 encoding_uid = LLDB_INVALID_UID(18446744073709551615UL);
5920 resolve_state = Type::eResolveStateFull;
5921 }
5922 }
5923 else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID(18446744073709551615UL))
5924 {
5925 // Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id".
5926
5927 DWARFDebugInfoEntry* encoding_die = dwarf_cu->GetDIEPtr(encoding_uid);
5928
5929 if (encoding_die && encoding_die->Tag() == DW_TAG_structure_type)
5930 {
5931 if (const char *struct_name = encoding_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL__null))
5932 {
5933 if (!strcmp(struct_name, "objc_object"))
5934 {
5935 if (log)
5936 GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.",
5937 die->GetOffset(),
5938 DW_TAG_value_to_name(die->Tag()),
5939 die->GetName(this, dwarf_cu));
5940 clang_type = ast.GetBasicType(eBasicTypeObjCID);
5941 encoding_data_type = Type::eEncodingIsUID;
5942 encoding_uid = LLDB_INVALID_UID(18446744073709551615UL);
5943 resolve_state = Type::eResolveStateFull;
5944 }
5945 }
5946 }
5947 }
5948 }
5949 }
5950
5951 type_sp.reset( new Type (MakeUserID(die->GetOffset()),
5952 this,
5953 type_name_const_str,
5954 byte_size,
5955 NULL__null,
5956 encoding_uid,
5957 encoding_data_type,
5958 &decl,
5959 clang_type,
5960 resolve_state));
5961
5962 m_die_to_type[die] = type_sp.get();
5963
5964// Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false);
5965// if (encoding_type != NULL)
5966// {
5967// if (encoding_type != DIE_IS_BEING_PARSED)
5968// type_sp->SetEncodingType(encoding_type);
5969// else
5970// m_indirect_fixups.push_back(type_sp.get());
5971// }
5972 }
5973 break;
5974
5975 case DW_TAG_structure_type:
5976 case DW_TAG_union_type:
5977 case DW_TAG_class_type:
5978 {
5979 // Set a bit that lets us know that we are currently parsing this
5980 m_die_to_type[die] = DIE_IS_BEING_PARSED((lldb_private::Type*)1);
5981 bool byte_size_valid = false;
5982
5983 LanguageType class_language = eLanguageTypeUnknown;
5984 bool is_complete_objc_class = false;
5985 //bool struct_is_class = false;
5986 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
5987 if (num_attributes > 0)
5988 {
5989 uint32_t i;
5990 for (i=0; i<num_attributes; ++i)
5991 {
5992 attr = attributes.AttributeAtIndex(i);
5993 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
5994 {
5995 switch (attr)
5996 {
5997 case DW_AT_decl_file:
5998 if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid())
5999 {
6000 // llvm-gcc outputs invalid DW_AT_decl_file attributes that always
6001 // point to the compile unit file, so we clear this invalid value
6002 // so that we can still unique types efficiently.
6003 decl.SetFile(FileSpec ("<invalid>", false));
6004 }
6005 else
6006 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned()));
6007 break;
6008
6009 case DW_AT_decl_line:
6010 decl.SetLine(form_value.Unsigned());
6011 break;
6012
6013 case DW_AT_decl_column:
6014 decl.SetColumn(form_value.Unsigned());
6015 break;
6016
6017 case DW_AT_name:
6018 type_name_cstr = form_value.AsCString(&get_debug_str_data());
6019 type_name_const_str.SetCString(type_name_cstr);
6020 break;
6021
6022 case DW_AT_byte_size:
6023 byte_size = form_value.Unsigned();
6024 byte_size_valid = true;
6025 break;
6026
6027 case DW_AT_accessibility:
6028 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
6029 break;
6030
6031 case DW_AT_declaration:
6032 is_forward_declaration = form_value.Boolean();
6033 break;
6034
6035 case DW_AT_APPLE_runtime_class:
6036 class_language = (LanguageType)form_value.Signed();
6037 break;
6038
6039 case DW_AT_APPLE_objc_complete_type:
6040 is_complete_objc_class = form_value.Signed();
6041 break;
6042
6043 case DW_AT_allocated:
6044 case DW_AT_associated:
6045 case DW_AT_data_location:
6046 case DW_AT_description:
6047 case DW_AT_start_scope:
6048 case DW_AT_visibility:
6049 default:
6050 case DW_AT_sibling:
6051 break;
6052 }
6053 }
6054 }
6055 }
6056
6057 // UniqueDWARFASTType is large, so don't create a local variables on the
6058 // stack, put it on the heap. This function is often called recursively
6059 // and clang isn't good and sharing the stack space for variables in different blocks.
6060 std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap(new UniqueDWARFASTType());
6061
6062 // Only try and unique the type if it has a name.
6063 if (type_name_const_str &&
6064 GetUniqueDWARFASTTypeMap().Find (type_name_const_str,
6065 this,
6066 dwarf_cu,
6067 die,
6068 decl,
6069 byte_size_valid ? byte_size : -1,
6070 *unique_ast_entry_ap))
6071 {
6072 // We have already parsed this type or from another
6073 // compile unit. GCC loves to use the "one definition
6074 // rule" which can result in multiple definitions
6075 // of the same class over and over in each compile
6076 // unit.
6077 type_sp = unique_ast_entry_ap->m_type_sp;
6078 if (type_sp)
6079 {
6080 m_die_to_type[die] = type_sp.get();
6081 return type_sp;
6082 }
6083 }
6084
6085 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6086
6087 int tag_decl_kind = -1;
6088 AccessType default_accessibility = eAccessNone;
6089 if (tag == DW_TAG_structure_type)
6090 {
6091 tag_decl_kind = clang::TTK_Struct;
6092 default_accessibility = eAccessPublic;
6093 }
6094 else if (tag == DW_TAG_union_type)
6095 {
6096 tag_decl_kind = clang::TTK_Union;
6097 default_accessibility = eAccessPublic;
6098 }
6099 else if (tag == DW_TAG_class_type)
6100 {
6101 tag_decl_kind = clang::TTK_Class;
6102 default_accessibility = eAccessPrivate;
6103 }
6104
6105 if (byte_size_valid && byte_size == 0 && type_name_cstr &&
6106 die->HasChildren() == false &&
6107 sc.comp_unit->GetLanguage() == eLanguageTypeObjC)
6108 {
6109 // Work around an issue with clang at the moment where
6110 // forward declarations for objective C classes are emitted
6111 // as:
6112 // DW_TAG_structure_type [2]
6113 // DW_AT_name( "ForwardObjcClass" )
6114 // DW_AT_byte_size( 0x00 )
6115 // DW_AT_decl_file( "..." )
6116 // DW_AT_decl_line( 1 )
6117 //
6118 // Note that there is no DW_AT_declaration and there are
6119 // no children, and the byte size is zero.
6120 is_forward_declaration = true;
6121 }
6122
6123 if (class_language == eLanguageTypeObjC ||
6124 class_language == eLanguageTypeObjC_plus_plus)
6125 {
6126 if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu))
6127 {
6128 // We have a valid eSymbolTypeObjCClass class symbol whose
6129 // name matches the current objective C class that we
6130 // are trying to find and this DIE isn't the complete
6131 // definition (we checked is_complete_objc_class above and
6132 // know it is false), so the real definition is in here somewhere
6133 type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6134
6135 if (!type_sp && GetDebugMapSymfile ())
6136 {
6137 // We weren't able to find a full declaration in
6138 // this DWARF, see if we have a declaration anywhere
6139 // else...
6140 type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
6141 }
6142
6143 if (type_sp)
6144 {
6145 if (log)
6146 {
6147 GetObjectFile()->GetModule()->LogMessage (log,
6148 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64"l" "x",
6149 static_cast<void*>(this),
6150 die->GetOffset(),
6151 DW_TAG_value_to_name(tag),
6152 type_name_cstr,
6153 type_sp->GetID());
6154 }
6155
6156 // We found a real definition for this type elsewhere
6157 // so lets use it and cache the fact that we found
6158 // a complete type for this die
6159 m_die_to_type[die] = type_sp.get();
6160 return type_sp;
6161 }
6162 }
6163 }
6164
6165
6166 if (is_forward_declaration)
6167 {
6168 // We have a forward declaration to a type and we need
6169 // to try and find a full declaration. We look in the
6170 // current type index just in case we have a forward
6171 // declaration followed by an actual declarations in the
6172 // DWARF. If this fails, we need to look elsewhere...
6173 if (log)
6174 {
6175 GetObjectFile()->GetModule()->LogMessage (log,
6176 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type",
6177 static_cast<void*>(this),
6178 die->GetOffset(),
6179 DW_TAG_value_to_name(tag),
6180 type_name_cstr);
6181 }
6182
6183 DWARFDeclContext die_decl_ctx;
6184 die->GetDWARFDeclContext(this, dwarf_cu, die_decl_ctx);
6185
6186 //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str);
6187 type_sp = FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6188
6189 if (!type_sp && GetDebugMapSymfile ())
6190 {
6191 // We weren't able to find a full declaration in
6192 // this DWARF, see if we have a declaration anywhere
6193 // else...
6194 type_sp = m_debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx);
6195 }
6196
6197 if (type_sp)
6198 {
6199 if (log)
6200 {
6201 GetObjectFile()->GetModule()->LogMessage (log,
6202 "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64"l" "x",
6203 static_cast<void*>(this),
6204 die->GetOffset(),
6205 DW_TAG_value_to_name(tag),
6206 type_name_cstr,
6207 type_sp->GetID());
6208 }
6209
6210 // We found a real definition for this type elsewhere
6211 // so lets use it and cache the fact that we found
6212 // a complete type for this die
6213 m_die_to_type[die] = type_sp.get();
6214 return type_sp;
6215 }
6216 }
6217 assert (tag_decl_kind != -1)((tag_decl_kind != -1) ? static_cast<void> (0) : __assert_fail
("tag_decl_kind != -1", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 6217, __PRETTY_FUNCTION__))
;
6218 bool clang_type_was_created = false;
6219 clang_type.SetClangType(ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6220 if (!clang_type)
6221 {
6222 const DWARFDebugInfoEntry *decl_ctx_die;
6223
6224 clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6225 if (accessibility == eAccessNone && decl_ctx)
6226 {
6227 // Check the decl context that contains this class/struct/union.
6228 // If it is a class we must give it an accessibility.
6229 const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
6230 if (DeclKindIsCXXClass (containing_decl_kind))
6231 accessibility = default_accessibility;
6232 }
6233
6234 ClangASTMetadata metadata;
6235 metadata.SetUserID(MakeUserID(die->GetOffset()));
6236 metadata.SetIsDynamicCXXType(ClassOrStructIsVirtual (dwarf_cu, die));
6237
6238 if (type_name_cstr && strchr (type_name_cstr, '<'))
6239 {
6240 ClangASTContext::TemplateParameterInfos template_param_infos;
6241 if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos))
6242 {
6243 clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx,
6244 accessibility,
6245 type_name_cstr,
6246 tag_decl_kind,
6247 template_param_infos);
6248
6249 clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx,
6250 class_template_decl,
6251 tag_decl_kind,
6252 template_param_infos);
6253 clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl);
6254 clang_type_was_created = true;
6255
6256 GetClangASTContext().SetMetadata (class_template_decl, metadata);
6257 GetClangASTContext().SetMetadata (class_specialization_decl, metadata);
6258 }
6259 }
6260
6261 if (!clang_type_was_created)
6262 {
6263 clang_type_was_created = true;
6264 clang_type = ast.CreateRecordType (decl_ctx,
6265 accessibility,
6266 type_name_cstr,
6267 tag_decl_kind,
6268 class_language,
6269 &metadata);
6270 }
6271 }
6272
6273 // Store a forward declaration to this class type in case any
6274 // parameters in any class methods need it for the clang
6275 // types for function prototypes.
6276 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6277 type_sp.reset (new Type (MakeUserID(die->GetOffset()),
6278 this,
6279 type_name_const_str,
6280 byte_size,
6281 NULL__null,
6282 LLDB_INVALID_UID(18446744073709551615UL),
6283 Type::eEncodingIsUID,
6284 &decl,
6285 clang_type,
6286 Type::eResolveStateForward));
6287
6288 type_sp->SetIsCompleteObjCClass(is_complete_objc_class);
6289
6290
6291 // Add our type to the unique type map so we don't
6292 // end up creating many copies of the same type over
6293 // and over in the ASTContext for our module
6294 unique_ast_entry_ap->m_type_sp = type_sp;
6295 unique_ast_entry_ap->m_symfile = this;
6296 unique_ast_entry_ap->m_cu = dwarf_cu;
6297 unique_ast_entry_ap->m_die = die;
6298 unique_ast_entry_ap->m_declaration = decl;
6299 unique_ast_entry_ap->m_byte_size = byte_size;
6300 GetUniqueDWARFASTTypeMap().Insert (type_name_const_str,
6301 *unique_ast_entry_ap);
6302
6303 if (is_forward_declaration && die->HasChildren())
6304 {
6305 // Check to see if the DIE actually has a definition, some version of GCC will
6306 // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram,
6307 // members, or inheritance, so we can't trust it
6308 const DWARFDebugInfoEntry *child_die = die->GetFirstChild();
6309 while (child_die)
6310 {
6311 switch (child_die->Tag())
6312 {
6313 case DW_TAG_inheritance:
6314 case DW_TAG_subprogram:
6315 case DW_TAG_member:
6316 case DW_TAG_APPLE_property:
6317 case DW_TAG_class_type:
6318 case DW_TAG_structure_type:
6319 case DW_TAG_enumeration_type:
6320 case DW_TAG_typedef:
6321 case DW_TAG_union_type:
6322 child_die = NULL__null;
6323 is_forward_declaration = false;
6324 break;
6325 default:
6326 child_die = child_die->GetSibling();
6327 break;
6328 }
6329 }
6330 }
6331
6332 if (!is_forward_declaration)
6333 {
6334 // Always start the definition for a class type so that
6335 // if the class has child classes or types that require
6336 // the class to be created for use as their decl contexts
6337 // the class will be ready to accept these child definitions.
6338 if (die->HasChildren() == false)
6339 {
6340 // No children for this struct/union/class, lets finish it
6341 clang_type.StartTagDeclarationDefinition ();
6342 clang_type.CompleteTagDeclarationDefinition ();
6343
6344 if (tag == DW_TAG_structure_type) // this only applies in C
6345 {
6346 clang::RecordDecl *record_decl = clang_type.GetAsRecordDecl();
6347
6348 if (record_decl)
6349 m_record_decl_to_layout_map.insert(std::make_pair(record_decl, LayoutInfo()));
6350 }
6351 }
6352 else if (clang_type_was_created)
6353 {
6354 // Start the definition if the class is not objective C since
6355 // the underlying decls respond to isCompleteDefinition(). Objective
6356 // C decls don't respond to isCompleteDefinition() so we can't
6357 // start the declaration definition right away. For C++ class/union/structs
6358 // we want to start the definition in case the class is needed as the
6359 // declaration context for a contained class or type without the need
6360 // to complete that type..
6361
6362 if (class_language != eLanguageTypeObjC &&
6363 class_language != eLanguageTypeObjC_plus_plus)
6364 clang_type.StartTagDeclarationDefinition ();
6365
6366 // Leave this as a forward declaration until we need
6367 // to know the details of the type. lldb_private::Type
6368 // will automatically call the SymbolFile virtual function
6369 // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)"
6370 // When the definition needs to be defined.
6371 m_forward_decl_die_to_clang_type[die] = clang_type.GetOpaqueQualType();
6372 m_forward_decl_clang_type_to_die[clang_type.RemoveFastQualifiers().GetOpaqueQualType()] = die;
6373 clang_type.SetHasExternalStorage (true);
6374 }
6375 }
6376
6377 }
6378 break;
6379
6380 case DW_TAG_enumeration_type:
6381 {
6382 // Set a bit that lets us know that we are currently parsing this
6383 m_die_to_type[die] = DIE_IS_BEING_PARSED((lldb_private::Type*)1);
6384
6385 lldb::user_id_t encoding_uid = DW_INVALID_OFFSET(~(dw_offset_t)0);
6386
6387 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
6388 if (num_attributes > 0)
6389 {
6390 uint32_t i;
6391
6392 for (i=0; i<num_attributes; ++i)
6393 {
6394 attr = attributes.AttributeAtIndex(i);
6395 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6396 {
6397 switch (attr)
6398 {
6399 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6400 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
6401 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6402 case DW_AT_name:
6403 type_name_cstr = form_value.AsCString(&get_debug_str_data());
6404 type_name_const_str.SetCString(type_name_cstr);
6405 break;
6406 case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break;
6407 case DW_AT_byte_size: byte_size = form_value.Unsigned(); break;
6408 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6409 case DW_AT_declaration: break; //is_forward_declaration = form_value.Boolean(); break;
6410 case DW_AT_allocated:
6411 case DW_AT_associated:
6412 case DW_AT_bit_stride:
6413 case DW_AT_byte_stride:
6414 case DW_AT_data_location:
6415 case DW_AT_description:
6416 case DW_AT_start_scope:
6417 case DW_AT_visibility:
6418 case DW_AT_specification:
6419 case DW_AT_abstract_origin:
6420 case DW_AT_sibling:
6421 break;
6422 }
6423 }
6424 }
6425
6426 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6427
6428 ClangASTType enumerator_clang_type;
6429 clang_type.SetClangType (ast.getASTContext(), m_forward_decl_die_to_clang_type.lookup (die));
6430 if (!clang_type)
6431 {
6432 if (encoding_uid != DW_INVALID_OFFSET(~(dw_offset_t)0))
6433 {
6434 Type *enumerator_type = ResolveTypeUID(encoding_uid);
6435 if (enumerator_type)
6436 enumerator_clang_type = enumerator_type->GetClangFullType();
6437 }
6438
6439 if (!enumerator_clang_type)
6440 enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL__null,
6441 DW_ATE_signed,
6442 byte_size * 8);
6443
6444 clang_type = ast.CreateEnumerationType (type_name_cstr,
6445 GetClangDeclContextContainingDIE (dwarf_cu, die, NULL__null),
6446 decl,
6447 enumerator_clang_type);
6448 }
6449 else
6450 {
6451 enumerator_clang_type = clang_type.GetEnumerationIntegerType ();
6452 }
6453
6454 LinkDeclContextToDIE(clang_type.GetDeclContextForType(), die);
6455
6456 type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6457 this,
6458 type_name_const_str,
6459 byte_size,
6460 NULL__null,
6461 encoding_uid,
6462 Type::eEncodingIsUID,
6463 &decl,
6464 clang_type,
6465 Type::eResolveStateForward));
6466
6467 clang_type.StartTagDeclarationDefinition ();
6468 if (die->HasChildren())
6469 {
6470 SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
6471 bool is_signed = false;
6472 enumerator_clang_type.IsIntegerType(is_signed);
6473 ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), dwarf_cu, die);
6474 }
6475 clang_type.CompleteTagDeclarationDefinition ();
6476 }
6477 }
6478 break;
6479
6480 case DW_TAG_inlined_subroutine:
6481 case DW_TAG_subprogram:
6482 case DW_TAG_subroutine_type:
6483 {
6484 // Set a bit that lets us know that we are currently parsing this
6485 m_die_to_type[die] = DIE_IS_BEING_PARSED((lldb_private::Type*)1);
6486
6487 //const char *mangled = NULL;
6488 dw_offset_t type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
6489 bool is_variadic = false;
6490 bool is_inline = false;
6491 bool is_static = false;
6492 bool is_virtual = false;
6493 bool is_explicit = false;
6494 bool is_artificial = false;
6495 dw_offset_t specification_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
6496 dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
6497 dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
6498
6499 unsigned type_quals = 0;
6500 clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern
6501
6502
6503 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
6504 if (num_attributes > 0)
6505 {
6506 uint32_t i;
6507 for (i=0; i<num_attributes; ++i)
6508 {
6509 attr = attributes.AttributeAtIndex(i);
6510 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6511 {
6512 switch (attr)
6513 {
6514 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6515 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
6516 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6517 case DW_AT_name:
6518 type_name_cstr = form_value.AsCString(&get_debug_str_data());
6519 type_name_const_str.SetCString(type_name_cstr);
6520 break;
6521
6522 case DW_AT_linkage_name:
6523 case DW_AT_MIPS_linkage_name: break; // mangled = form_value.AsCString(&get_debug_str_data()); break;
6524 case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break;
6525 case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6526 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break;
6527 case DW_AT_inline: is_inline = form_value.Boolean(); break;
6528 case DW_AT_virtuality: is_virtual = form_value.Boolean(); break;
6529 case DW_AT_explicit: is_explicit = form_value.Boolean(); break;
6530 case DW_AT_artificial: is_artificial = form_value.Boolean(); break;
6531
6532
6533 case DW_AT_external:
6534 if (form_value.Unsigned())
6535 {
6536 if (storage == clang::SC_None)
6537 storage = clang::SC_Extern;
6538 else
6539 storage = clang::SC_PrivateExtern;
6540 }
6541 break;
6542
6543 case DW_AT_specification:
6544 specification_die_offset = form_value.Reference(dwarf_cu);
6545 break;
6546
6547 case DW_AT_abstract_origin:
6548 abstract_origin_die_offset = form_value.Reference(dwarf_cu);
6549 break;
6550
6551 case DW_AT_object_pointer:
6552 object_pointer_die_offset = form_value.Reference(dwarf_cu);
6553 break;
6554
6555 case DW_AT_allocated:
6556 case DW_AT_associated:
6557 case DW_AT_address_class:
6558 case DW_AT_calling_convention:
6559 case DW_AT_data_location:
6560 case DW_AT_elemental:
6561 case DW_AT_entry_pc:
6562 case DW_AT_frame_base:
6563 case DW_AT_high_pc:
6564 case DW_AT_low_pc:
6565 case DW_AT_prototyped:
6566 case DW_AT_pure:
6567 case DW_AT_ranges:
6568 case DW_AT_recursive:
6569 case DW_AT_return_addr:
6570 case DW_AT_segment:
6571 case DW_AT_start_scope:
6572 case DW_AT_static_link:
6573 case DW_AT_trampoline:
6574 case DW_AT_visibility:
6575 case DW_AT_vtable_elem_location:
6576 case DW_AT_description:
6577 case DW_AT_sibling:
6578 break;
6579 }
6580 }
6581 }
6582 }
6583
6584 std::string object_pointer_name;
6585 if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
6586 {
6587 // Get the name from the object pointer die
6588 StreamString s;
6589 if (DWARFDebugInfoEntry::GetName (this, dwarf_cu, object_pointer_die_offset, s))
6590 {
6591 object_pointer_name.assign(s.GetData());
6592 }
6593 }
6594
6595 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
6596
6597 ClangASTType return_clang_type;
6598 Type *func_type = NULL__null;
6599
6600 if (type_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
6601 func_type = ResolveTypeUID(type_die_offset);
6602
6603 if (func_type)
6604 return_clang_type = func_type->GetClangForwardType();
6605 else
6606 return_clang_type = ast.GetBasicType(eBasicTypeVoid);
6607
6608
6609 std::vector<ClangASTType> function_param_types;
6610 std::vector<clang::ParmVarDecl*> function_param_decls;
6611
6612 // Parse the function children for the parameters
6613
6614 const DWARFDebugInfoEntry *decl_ctx_die = NULL__null;
6615 clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
6616 const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind();
6617
6618 const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind);
6619 // Start off static. This will be set to false in ParseChildParameters(...)
6620 // if we find a "this" parameters as the first parameter
6621 if (is_cxx_method)
6622 is_static = true;
6623
6624 if (die->HasChildren())
6625 {
6626 bool skip_artificial = true;
6627 ParseChildParameters (sc,
6628 containing_decl_ctx,
6629 dwarf_cu,
6630 die,
6631 skip_artificial,
6632 is_static,
6633 is_variadic,
6634 type_list,
6635 function_param_types,
6636 function_param_decls,
6637 type_quals);
6638 }
6639
6640 // clang_type will get the function prototype clang type after this call
6641 clang_type = ast.CreateFunctionType (return_clang_type,
6642 function_param_types.data(),
6643 function_param_types.size(),
6644 is_variadic,
6645 type_quals);
6646
6647 bool ignore_containing_context = false;
6648
6649 if (type_name_cstr)
6650 {
6651 bool type_handled = false;
6652 if (tag == DW_TAG_subprogram)
6653 {
6654 ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true);
6655 if (objc_method.IsValid(true))
6656 {
6657 ClangASTType class_opaque_type;
6658 ConstString class_name(objc_method.GetClassName());
6659 if (class_name)
6660 {
6661 TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL__null, class_name, false));
6662
6663 if (complete_objc_class_type_sp)
6664 {
6665 ClangASTType type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType();
6666 if (type_clang_forward_type.IsObjCObjectOrInterfaceType ())
6667 class_opaque_type = type_clang_forward_type;
6668 }
6669 }
6670
6671 if (class_opaque_type)
6672 {
6673 // If accessibility isn't set to anything valid, assume public for
6674 // now...
6675 if (accessibility == eAccessNone)
6676 accessibility = eAccessPublic;
6677
6678 clang::ObjCMethodDecl *objc_method_decl = class_opaque_type.AddMethodToObjCObjectType (type_name_cstr,
6679 clang_type,
6680 accessibility,
6681 is_artificial);
6682 type_handled = objc_method_decl != NULL__null;
6683 if (type_handled)
6684 {
6685 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die);
6686 GetClangASTContext().SetMetadataAsUserID (objc_method_decl, MakeUserID(die->GetOffset()));
6687 }
6688 else
6689 {
6690 GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), please file a bug and attach the file at the start of this error message",
6691 die->GetOffset(),
6692 tag,
6693 DW_TAG_value_to_name(tag));
6694 }
6695 }
6696 }
6697 else if (is_cxx_method)
6698 {
6699 // Look at the parent of this DIE and see if is is
6700 // a class or struct and see if this is actually a
6701 // C++ method
6702 Type *class_type = ResolveType (dwarf_cu, decl_ctx_die);
6703 if (class_type)
6704 {
6705 if (class_type->GetID() != MakeUserID(decl_ctx_die->GetOffset()))
6706 {
6707 // We uniqued the parent class of this function to another class
6708 // so we now need to associate all dies under "decl_ctx_die" to
6709 // DIEs in the DIE for "class_type"...
6710 SymbolFileDWARF *class_symfile = NULL__null;
6711 DWARFCompileUnitSP class_type_cu_sp;
6712 const DWARFDebugInfoEntry *class_type_die = NULL__null;
6713
6714 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile();
6715 if (debug_map_symfile)
6716 {
6717 class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID()));
6718 class_type_die = class_symfile->DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6719 }
6720 else
6721 {
6722 class_symfile = this;
6723 class_type_die = DebugInfo()->GetDIEPtr(class_type->GetID(), &class_type_cu_sp);
6724 }
6725 if (class_type_die)
6726 {
6727 DWARFDIECollection failures;
6728
6729 CopyUniqueClassMethodTypes (class_symfile,
6730 class_type,
6731 class_type_cu_sp.get(),
6732 class_type_die,
6733 dwarf_cu,
6734 decl_ctx_die,
6735 failures);
6736
6737 // FIXME do something with these failures that's smarter than
6738 // just dropping them on the ground. Unfortunately classes don't
6739 // like having stuff added to them after their definitions are
6740 // complete...
6741
6742 type_ptr = m_die_to_type[die];
6743 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
6744 {
6745 type_sp = type_ptr->shared_from_this();
6746 break;
6747 }
6748 }
6749 }
6750
6751 if (specification_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
6752 {
6753 // We have a specification which we are going to base our function
6754 // prototype off of, so we need this type to be completed so that the
6755 // m_die_to_decl_ctx for the method in the specification has a valid
6756 // clang decl context.
6757 class_type->GetClangForwardType();
6758 // If we have a specification, then the function type should have been
6759 // made with the specification and not with this die.
6760 DWARFCompileUnitSP spec_cu_sp;
6761 const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp);
6762 clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die);
6763 if (spec_clang_decl_ctx)
6764 {
6765 LinkDeclContextToDIE(spec_clang_decl_ctx, die);
6766 }
6767 else
6768 {
6769 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8x) has no decl\n",
6770 MakeUserID(die->GetOffset()),
6771 specification_die_offset);
6772 }
6773 type_handled = true;
6774 }
6775 else if (abstract_origin_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0))
6776 {
6777 // We have a specification which we are going to base our function
6778 // prototype off of, so we need this type to be completed so that the
6779 // m_die_to_decl_ctx for the method in the abstract origin has a valid
6780 // clang decl context.
6781 class_type->GetClangForwardType();
6782
6783 DWARFCompileUnitSP abs_cu_sp;
6784 const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp);
6785 clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die);
6786 if (abs_clang_decl_ctx)
6787 {
6788 LinkDeclContextToDIE (abs_clang_decl_ctx, die);
6789 }
6790 else
6791 {
6792 GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64"l" "x" ": DW_AT_abstract_origin(0x%8.8x) has no decl\n",
6793 MakeUserID(die->GetOffset()),
6794 abstract_origin_die_offset);
6795 }
6796 type_handled = true;
6797 }
6798 else
6799 {
6800 ClangASTType class_opaque_type = class_type->GetClangForwardType();
6801 if (class_opaque_type.IsCXXClassType ())
6802 {
6803 if (class_opaque_type.IsBeingDefined ())
6804 {
6805 // Neither GCC 4.2 nor clang++ currently set a valid accessibility
6806 // in the DWARF for C++ methods... Default to public for now...
6807 if (accessibility == eAccessNone)
6808 accessibility = eAccessPublic;
6809
6810 if (!is_static && !die->HasChildren())
6811 {
6812 // We have a C++ member function with no children (this pointer!)
6813 // and clang will get mad if we try and make a function that isn't
6814 // well formed in the DWARF, so we will just skip it...
6815 type_handled = true;
6816 }
6817 else
6818 {
6819 clang::CXXMethodDecl *cxx_method_decl;
6820 // REMOVE THE CRASH DESCRIPTION BELOW
6821 Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s",
6822 type_name_cstr,
6823 class_type->GetName().GetCString(),
6824 MakeUserID(die->GetOffset()),
6825 m_obj_file->GetFileSpec().GetPath().c_str());
6826
6827 const bool is_attr_used = false;
6828
6829 cxx_method_decl = class_opaque_type.AddMethodToCXXRecordType (type_name_cstr,
6830 clang_type,
6831 accessibility,
6832 is_virtual,
6833 is_static,
6834 is_inline,
6835 is_explicit,
6836 is_attr_used,
6837 is_artificial);
6838
6839 type_handled = cxx_method_decl != NULL__null;
6840
6841 if (type_handled)
6842 {
6843 LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die);
6844
6845 Host::SetCrashDescription (NULL__null);
6846
6847
6848 ClangASTMetadata metadata;
6849 metadata.SetUserID(MakeUserID(die->GetOffset()));
6850
6851 if (!object_pointer_name.empty())
6852 {
6853 metadata.SetObjectPtrName(object_pointer_name.c_str());
6854 if (log)
6855 log->Printf ("Setting object pointer name: %s on method object %p.\n",
6856 object_pointer_name.c_str(),
6857 static_cast<void*>(cxx_method_decl));
6858 }
6859 GetClangASTContext().SetMetadata (cxx_method_decl, metadata);
6860 }
6861 else
6862 {
6863 ignore_containing_context = true;
6864 }
6865 }
6866 }
6867 else
6868 {
6869 // We were asked to parse the type for a method in a class, yet the
6870 // class hasn't been asked to complete itself through the
6871 // clang::ExternalASTSource protocol, so we need to just have the
6872 // class complete itself and do things the right way, then our
6873 // DIE should then have an entry in the m_die_to_type map. First
6874 // we need to modify the m_die_to_type so it doesn't think we are
6875 // trying to parse this DIE anymore...
6876 m_die_to_type[die] = NULL__null;
6877
6878 // Now we get the full type to force our class type to complete itself
6879 // using the clang::ExternalASTSource protocol which will parse all
6880 // base classes and all methods (including the method for this DIE).
6881 class_type->GetClangFullType();
6882
6883 // The type for this DIE should have been filled in the function call above
6884 type_ptr = m_die_to_type[die];
6885 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
6886 {
6887 type_sp = type_ptr->shared_from_this();
6888 break;
6889 }
6890
6891 // FIXME This is fixing some even uglier behavior but we really need to
6892 // uniq the methods of each class as well as the class itself.
6893 // <rdar://problem/11240464>
6894 type_handled = true;
6895 }
6896 }
6897 }
6898 }
6899 }
6900 }
6901
6902 if (!type_handled)
6903 {
6904 // We just have a function that isn't part of a class
6905 clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (ignore_containing_context ? GetClangASTContext().GetTranslationUnitDecl() : containing_decl_ctx,
6906 type_name_cstr,
6907 clang_type,
6908 storage,
6909 is_inline);
6910
6911// if (template_param_infos.GetSize() > 0)
6912// {
6913// clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx,
6914// function_decl,
6915// type_name_cstr,
6916// template_param_infos);
6917//
6918// ast.CreateFunctionTemplateSpecializationInfo (function_decl,
6919// func_template_decl,
6920// template_param_infos);
6921// }
6922 // Add the decl to our DIE to decl context map
6923 assert (function_decl)((function_decl) ? static_cast<void> (0) : __assert_fail
("function_decl", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 6923, __PRETTY_FUNCTION__))
;
6924 LinkDeclContextToDIE(function_decl, die);
6925 if (!function_param_decls.empty())
6926 ast.SetFunctionParameters (function_decl,
6927 &function_param_decls.front(),
6928 function_param_decls.size());
6929
6930 ClangASTMetadata metadata;
6931 metadata.SetUserID(MakeUserID(die->GetOffset()));
6932
6933 if (!object_pointer_name.empty())
6934 {
6935 metadata.SetObjectPtrName(object_pointer_name.c_str());
6936 if (log)
6937 log->Printf ("Setting object pointer name: %s on function object %p.",
6938 object_pointer_name.c_str(),
6939 static_cast<void*>(function_decl));
6940 }
6941 GetClangASTContext().SetMetadata (function_decl, metadata);
6942 }
6943 }
6944 type_sp.reset( new Type (MakeUserID(die->GetOffset()),
6945 this,
6946 type_name_const_str,
6947 0,
6948 NULL__null,
6949 LLDB_INVALID_UID(18446744073709551615UL),
6950 Type::eEncodingIsUID,
6951 &decl,
6952 clang_type,
6953 Type::eResolveStateFull));
6954 assert(type_sp.get())((type_sp.get()) ? static_cast<void> (0) : __assert_fail
("type_sp.get()", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 6954, __PRETTY_FUNCTION__))
;
6955 }
6956 break;
6957
6958 case DW_TAG_array_type:
6959 {
6960 // Set a bit that lets us know that we are currently parsing this
6961 m_die_to_type[die] = DIE_IS_BEING_PARSED((lldb_private::Type*)1);
6962
6963 lldb::user_id_t type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
6964 int64_t first_index = 0;
6965 uint32_t byte_stride = 0;
6966 uint32_t bit_stride = 0;
6967 bool is_vector = false;
6968 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
6969
6970 if (num_attributes > 0)
6971 {
6972 uint32_t i;
6973 for (i=0; i<num_attributes; ++i)
6974 {
6975 attr = attributes.AttributeAtIndex(i);
6976 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
6977 {
6978 switch (attr)
6979 {
6980 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
6981 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
6982 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
6983 case DW_AT_name:
6984 type_name_cstr = form_value.AsCString(&get_debug_str_data());
6985 type_name_const_str.SetCString(type_name_cstr);
6986 break;
6987
6988 case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break;
6989 case DW_AT_byte_size: break; // byte_size = form_value.Unsigned(); break;
6990 case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break;
6991 case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break;
6992 case DW_AT_GNU_vector: is_vector = form_value.Boolean(); break;
6993 case DW_AT_accessibility: break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
6994 case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break;
6995 case DW_AT_allocated:
6996 case DW_AT_associated:
6997 case DW_AT_data_location:
6998 case DW_AT_description:
6999 case DW_AT_ordering:
7000 case DW_AT_start_scope:
7001 case DW_AT_visibility:
7002 case DW_AT_specification:
7003 case DW_AT_abstract_origin:
7004 case DW_AT_sibling:
7005 break;
7006 }
7007 }
7008 }
7009
7010 DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
7011
7012 Type *element_type = ResolveTypeUID(type_die_offset);
7013
7014 if (element_type)
7015 {
7016 std::vector<uint64_t> element_orders;
7017 ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride);
7018 if (byte_stride == 0 && bit_stride == 0)
7019 byte_stride = element_type->GetByteSize();
7020 ClangASTType array_element_type = element_type->GetClangForwardType();
7021 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
7022 uint64_t num_elements = 0;
7023 std::vector<uint64_t>::const_reverse_iterator pos;
7024 std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend();
7025 for (pos = element_orders.rbegin(); pos != end; ++pos)
7026 {
7027 num_elements = *pos;
7028 clang_type = ast.CreateArrayType (array_element_type,
7029 num_elements,
7030 is_vector);
7031 array_element_type = clang_type;
7032 array_element_bit_stride = num_elements ? array_element_bit_stride * num_elements : array_element_bit_stride;
7033 }
7034 ConstString empty_name;
7035 type_sp.reset( new Type (MakeUserID(die->GetOffset()),
7036 this,
7037 empty_name,
7038 array_element_bit_stride / 8,
7039 NULL__null,
7040 type_die_offset,
7041 Type::eEncodingIsUID,
7042 &decl,
7043 clang_type,
7044 Type::eResolveStateFull));
7045 type_sp->SetEncodingType (element_type);
7046 }
7047 }
7048 }
7049 break;
7050
7051 case DW_TAG_ptr_to_member_type:
7052 {
7053 dw_offset_t type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
7054 dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
7055
7056 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
7057
7058 if (num_attributes > 0) {
7059 uint32_t i;
7060 for (i=0; i<num_attributes; ++i)
7061 {
7062 attr = attributes.AttributeAtIndex(i);
7063 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7064 {
7065 switch (attr)
7066 {
7067 case DW_AT_type:
7068 type_die_offset = form_value.Reference(dwarf_cu); break;
7069 case DW_AT_containing_type:
7070 containing_type_die_offset = form_value.Reference(dwarf_cu); break;
7071 }
7072 }
7073 }
7074
7075 Type *pointee_type = ResolveTypeUID(type_die_offset);
7076 Type *class_type = ResolveTypeUID(containing_type_die_offset);
7077
7078 ClangASTType pointee_clang_type = pointee_type->GetClangForwardType();
7079 ClangASTType class_clang_type = class_type->GetClangLayoutType();
7080
7081 clang_type = pointee_clang_type.CreateMemberPointerType(class_clang_type);
7082
7083 byte_size = clang_type.GetByteSize();
7084
7085 type_sp.reset( new Type (MakeUserID(die->GetOffset()),
7086 this,
7087 type_name_const_str,
7088 byte_size,
7089 NULL__null,
7090 LLDB_INVALID_UID(18446744073709551615UL),
7091 Type::eEncodingIsUID,
7092 NULL__null,
7093 clang_type,
7094 Type::eResolveStateForward));
7095 }
7096
7097 break;
7098 }
7099 default:
7100 GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and attach the file at the start of this error message",
7101 die->GetOffset(),
7102 tag,
7103 DW_TAG_value_to_name(tag));
7104 break;
7105 }
7106
7107 if (type_sp.get())
7108 {
7109 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7110 dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7111
7112 SymbolContextScope * symbol_context_scope = NULL__null;
7113 if (sc_parent_tag == DW_TAG_compile_unit)
7114 {
7115 symbol_context_scope = sc.comp_unit;
7116 }
7117 else if (sc.function != NULL__null)
7118 {
7119 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7120 if (symbol_context_scope == NULL__null)
7121 symbol_context_scope = sc.function;
7122 }
7123
7124 if (symbol_context_scope != NULL__null)
7125 {
7126 type_sp->SetSymbolContextScope(symbol_context_scope);
7127 }
7128
7129 // We are ready to put this type into the uniqued list up at the module level
7130 type_list->Insert (type_sp);
7131
7132 m_die_to_type[die] = type_sp.get();
7133 }
7134 }
7135 else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type*)1))
7136 {
7137 type_sp = type_ptr->shared_from_this();
7138 }
7139 }
7140 return type_sp;
7141}
7142
7143size_t
7144SymbolFileDWARF::ParseTypes
7145(
7146 const SymbolContext& sc,
7147 DWARFCompileUnit* dwarf_cu,
7148 const DWARFDebugInfoEntry *die,
7149 bool parse_siblings,
7150 bool parse_children
7151)
7152{
7153 size_t types_added = 0;
7154 while (die != NULL__null)
7155 {
7156 bool type_is_new = false;
7157 if (ParseType(sc, dwarf_cu, die, &type_is_new).get())
7158 {
7159 if (type_is_new)
7160 ++types_added;
7161 }
7162
7163 if (parse_children && die->HasChildren())
7164 {
7165 if (die->Tag() == DW_TAG_subprogram)
7166 {
7167 SymbolContext child_sc(sc);
7168 child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get();
7169 types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true);
7170 }
7171 else
7172 types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true);
7173 }
7174
7175 if (parse_siblings)
7176 die = die->GetSibling();
7177 else
7178 die = NULL__null;
7179 }
7180 return types_added;
7181}
7182
7183
7184size_t
7185SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc)
7186{
7187 assert(sc.comp_unit && sc.function)((sc.comp_unit && sc.function) ? static_cast<void>
(0) : __assert_fail ("sc.comp_unit && sc.function", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 7187, __PRETTY_FUNCTION__))
;
7188 size_t functions_added = 0;
7189 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7190 if (dwarf_cu)
7191 {
7192 dw_offset_t function_die_offset = sc.function->GetID();
7193 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset);
7194 if (function_die)
7195 {
7196 ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS(18446744073709551615UL), 0);
7197 }
7198 }
7199
7200 return functions_added;
7201}
7202
7203
7204size_t
7205SymbolFileDWARF::ParseTypes (const SymbolContext &sc)
7206{
7207 // At least a compile unit must be valid
7208 assert(sc.comp_unit)((sc.comp_unit) ? static_cast<void> (0) : __assert_fail
("sc.comp_unit", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 7208, __PRETTY_FUNCTION__))
;
7209 size_t types_added = 0;
7210 DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
7211 if (dwarf_cu)
7212 {
7213 if (sc.function)
7214 {
7215 dw_offset_t function_die_offset = sc.function->GetID();
7216 const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset);
7217 if (func_die && func_die->HasChildren())
7218 {
7219 types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true);
7220 }
7221 }
7222 else
7223 {
7224 const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE();
7225 if (dwarf_cu_die && dwarf_cu_die->HasChildren())
7226 {
7227 types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true);
7228 }
7229 }
7230 }
7231
7232 return types_added;
7233}
7234
7235size_t
7236SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc)
7237{
7238 if (sc.comp_unit != NULL__null)
7239 {
7240 DWARFDebugInfo* info = DebugInfo();
7241 if (info == NULL__null)
7242 return 0;
7243
7244 if (sc.function)
7245 {
7246 DWARFCompileUnit* dwarf_cu = info->GetCompileUnitContainingDIE(sc.function->GetID()).get();
7247
7248 if (dwarf_cu == NULL__null)
7249 return 0;
7250
7251 const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID());
7252
7253 dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, LLDB_INVALID_ADDRESS(18446744073709551615UL));
7254 if (func_lo_pc != LLDB_INVALID_ADDRESS(18446744073709551615UL))
7255 {
7256 const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true);
7257
7258 // Let all blocks know they have parse all their variables
7259 sc.function->GetBlock (false).SetDidParseVariables (true, true);
7260 return num_variables;
7261 }
7262 }
7263 else if (sc.comp_unit)
7264 {
7265 DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID()).get();
7266
7267 if (dwarf_cu == NULL__null)
7268 return 0;
7269
7270 uint32_t vars_added = 0;
7271 VariableListSP variables (sc.comp_unit->GetVariableList(false));
7272
7273 if (variables.get() == NULL__null)
7274 {
7275 variables.reset(new VariableList());
7276 sc.comp_unit->SetVariableList(variables);
7277
7278 DWARFCompileUnit* match_dwarf_cu = NULL__null;
7279 const DWARFDebugInfoEntry* die = NULL__null;
7280 DIEArray die_offsets;
7281 if (m_using_apple_tables)
7282 {
7283 if (m_apple_names_ap.get())
7284 {
7285 DWARFMappedHash::DIEInfoArray hash_data_array;
7286 if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(),
7287 dwarf_cu->GetNextCompileUnitOffset(),
7288 hash_data_array))
7289 {
7290 DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
7291 }
7292 }
7293 }
7294 else
7295 {
7296 // Index if we already haven't to make sure the compile units
7297 // get indexed and make their global DIE index list
7298 if (!m_indexed)
7299 Index ();
7300
7301 m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(),
7302 dwarf_cu->GetNextCompileUnitOffset(),
7303 die_offsets);
7304 }
7305
7306 const size_t num_matches = die_offsets.size();
7307 if (num_matches)
7308 {
7309 DWARFDebugInfo* debug_info = DebugInfo();
7310 for (size_t i=0; i<num_matches; ++i)
7311 {
7312 const dw_offset_t die_offset = die_offsets[i];
7313 die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu);
7314 if (die)
7315 {
7316 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS(18446744073709551615UL)));
7317 if (var_sp)
7318 {
7319 variables->AddVariableIfUnique (var_sp);
7320 ++vars_added;
7321 }
7322 }
7323 else
7324 {
7325 if (m_using_apple_tables)
7326 {
7327 GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset);
7328 }
7329 }
7330
7331 }
7332 }
7333 }
7334 return vars_added;
7335 }
7336 }
7337 return 0;
7338}
7339
7340
7341VariableSP
7342SymbolFileDWARF::ParseVariableDIE
7343(
7344 const SymbolContext& sc,
7345 DWARFCompileUnit* dwarf_cu,
7346 const DWARFDebugInfoEntry *die,
7347 const lldb::addr_t func_low_pc
7348)
7349{
7350
7351 VariableSP var_sp (m_die_to_variable_sp[die]);
7352 if (var_sp)
7353 return var_sp; // Already been parsed!
7354
7355 const dw_tag_t tag = die->Tag();
7356 ModuleSP module = GetObjectFile()->GetModule();
7357
7358 if ((tag == DW_TAG_variable) ||
7359 (tag == DW_TAG_constant) ||
7360 (tag == DW_TAG_formal_parameter && sc.function))
7361 {
7362 DWARFDebugInfoEntry::Attributes attributes;
7363 const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL__null, attributes);
7364 if (num_attributes > 0)
7365 {
7366 const char *name = NULL__null;
7367 const char *mangled = NULL__null;
7368 Declaration decl;
7369 uint32_t i;
7370 lldb::user_id_t type_uid = LLDB_INVALID_UID(18446744073709551615UL);
7371 DWARFExpression location;
7372 bool is_external = false;
7373 bool is_artificial = false;
7374 bool location_is_const_value_data = false;
7375 bool has_explicit_location = false;
7376 DWARFFormValue const_value;
7377 //AccessType accessibility = eAccessNone;
7378
7379 for (i=0; i<num_attributes; ++i)
7380 {
7381 dw_attr_t attr = attributes.AttributeAtIndex(i);
7382 DWARFFormValue form_value;
7383 if (attributes.ExtractFormValueAtIndex(this, i, form_value))
7384 {
7385 switch (attr)
7386 {
7387 case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
7388 case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
7389 case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
7390 case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break;
7391 case DW_AT_linkage_name:
7392 case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break;
7393 case DW_AT_type: type_uid = form_value.Reference(dwarf_cu); break;
7394 case DW_AT_external: is_external = form_value.Boolean(); break;
7395 case DW_AT_const_value:
7396 // If we have already found a DW_AT_location attribute, ignore this attribute.
7397 if (!has_explicit_location)
7398 {
7399 location_is_const_value_data = true;
7400 // The constant value will be either a block, a data value or a string.
7401 const DWARFDataExtractor& debug_info_data = get_debug_info_data();
7402 if (DWARFFormValue::IsBlockForm(form_value.Form()))
7403 {
7404 // Retrieve the value as a block expression.
7405 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7406 uint32_t block_length = form_value.Unsigned();
7407 location.CopyOpcodeData(module, debug_info_data, block_offset, block_length);
7408 }
7409 else if (DWARFFormValue::IsDataForm(form_value.Form()))
7410 {
7411 // Retrieve the value as a data expression.
7412 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64());
7413 uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7414 uint32_t data_length = fixed_form_sizes[form_value.Form()];
7415 if (data_length == 0)
7416 {
7417 const uint8_t *data_pointer = form_value.BlockData();
7418 if (data_pointer)
7419 {
7420 data_length = form_value.Unsigned();
7421 }
7422 else if (DWARFFormValue::IsDataForm(form_value.Form()))
7423 {
7424 // we need to get the byte size of the type later after we create the variable
7425 const_value = form_value;
7426 }
7427 }
7428 else
7429 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length);
7430 }
7431 else
7432 {
7433 // Retrieve the value as a string expression.
7434 if (form_value.Form() == DW_FORM_strp)
7435 {
7436 const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize(), dwarf_cu->IsDWARF64());
7437 uint32_t data_offset = attributes.DIEOffsetAtIndex(i);
7438 uint32_t data_length = fixed_form_sizes[form_value.Form()];
7439 location.CopyOpcodeData(module, debug_info_data, data_offset, data_length);
7440 }
7441 else
7442 {
7443 const char *str = form_value.AsCString(&debug_info_data);
7444 uint32_t string_offset = str - (const char *)debug_info_data.GetDataStart();
7445 uint32_t string_length = strlen(str) + 1;
7446 location.CopyOpcodeData(module, debug_info_data, string_offset, string_length);
7447 }
7448 }
7449 }
7450 break;
7451 case DW_AT_location:
7452 {
7453 location_is_const_value_data = false;
7454 has_explicit_location = true;
7455 if (form_value.BlockData())
7456 {
7457 const DWARFDataExtractor& debug_info_data = get_debug_info_data();
7458
7459 uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
7460 uint32_t block_length = form_value.Unsigned();
7461 location.CopyOpcodeData(module, get_debug_info_data(), block_offset, block_length);
7462 }
7463 else
7464 {
7465 const DWARFDataExtractor& debug_loc_data = get_debug_loc_data();
7466 const dw_offset_t debug_loc_offset = form_value.Unsigned();
7467
7468 size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset);
7469 if (loc_list_length > 0)
7470 {
7471 location.CopyOpcodeData(module, debug_loc_data, debug_loc_offset, loc_list_length);
7472 assert (func_low_pc != LLDB_INVALID_ADDRESS)((func_low_pc != (18446744073709551615UL)) ? static_cast<void
> (0) : __assert_fail ("func_low_pc != (18446744073709551615UL)"
, "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 7472, __PRETTY_FUNCTION__))
;
7473 location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress());
7474 }
7475 }
7476 }
7477 break;
7478
7479 case DW_AT_artificial: is_artificial = form_value.Boolean(); break;
7480 case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
7481 case DW_AT_declaration:
7482 case DW_AT_description:
7483 case DW_AT_endianity:
7484 case DW_AT_segment:
7485 case DW_AT_start_scope:
7486 case DW_AT_visibility:
7487 default:
7488 case DW_AT_abstract_origin:
7489 case DW_AT_sibling:
7490 case DW_AT_specification:
7491 break;
7492 }
7493 }
7494 }
7495
7496 ValueType scope = eValueTypeInvalid;
7497
7498 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
7499 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7500 SymbolContextScope * symbol_context_scope = NULL__null;
7501
7502 // DWARF doesn't specify if a DW_TAG_variable is a local, global
7503 // or static variable, so we have to do a little digging by
7504 // looking at the location of a variable to see if it contains
7505 // a DW_OP_addr opcode _somewhere_ in the definition. I say
7506 // somewhere because clang likes to combine small global variables
7507 // into the same symbol and have locations like:
7508 // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus
7509 // So if we don't have a DW_TAG_formal_parameter, we can look at
7510 // the location to see if it contains a DW_OP_addr opcode, and
7511 // then we can correctly classify our variables.
7512 if (tag == DW_TAG_formal_parameter)
7513 scope = eValueTypeVariableArgument;
7514 else
7515 {
7516 bool op_error = false;
7517 // Check if the location has a DW_OP_addr with any address value...
7518 lldb::addr_t location_DW_OP_addr = LLDB_INVALID_ADDRESS(18446744073709551615UL);
7519 if (!location_is_const_value_data)
7520 {
7521 location_DW_OP_addr = location.GetLocation_DW_OP_addr (0, op_error);
7522 if (op_error)
7523 {
7524 StreamString strm;
7525 location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL__null);
7526 GetObjectFile()->GetModule()->ReportError ("0x%8.8x: %s has an invalid location: %s", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), strm.GetString().c_str());
7527 }
7528 }
7529
7530 if (location_DW_OP_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL))
7531 {
7532 if (is_external)
7533 scope = eValueTypeVariableGlobal;
7534 else
7535 scope = eValueTypeVariableStatic;
7536
7537
7538 SymbolFileDWARFDebugMap *debug_map_symfile = GetDebugMapSymfile ();
7539
7540 if (debug_map_symfile)
7541 {
7542 // When leaving the DWARF in the .o files on darwin,
7543 // when we have a global variable that wasn't initialized,
7544 // the .o file might not have allocated a virtual
7545 // address for the global variable. In this case it will
7546 // have created a symbol for the global variable
7547 // that is undefined/data and external and the value will
7548 // be the byte size of the variable. When we do the
7549 // address map in SymbolFileDWARFDebugMap we rely on
7550 // having an address, we need to do some magic here
7551 // so we can get the correct address for our global
7552 // variable. The address for all of these entries
7553 // will be zero, and there will be an undefined symbol
7554 // in this object file, and the executable will have
7555 // a matching symbol with a good address. So here we
7556 // dig up the correct address and replace it in the
7557 // location for the variable, and set the variable's
7558 // symbol context scope to be that of the main executable
7559 // so the file address will resolve correctly.
7560 bool linked_oso_file_addr = false;
7561 if (is_external && location_DW_OP_addr == 0)
7562 {
7563 // we have a possible uninitialized extern global
7564 ConstString const_name(mangled ? mangled : name);
7565 ObjectFile *debug_map_objfile = debug_map_symfile->GetObjectFile();
7566 if (debug_map_objfile)
7567 {
7568 Symtab *debug_map_symtab = debug_map_objfile->GetSymtab();
7569 if (debug_map_symtab)
7570 {
7571 Symbol *exe_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name,
7572 eSymbolTypeData,
7573 Symtab::eDebugYes,
7574 Symtab::eVisibilityExtern);
7575 if (exe_symbol)
7576 {
7577 if (exe_symbol->ValueIsAddress())
7578 {
7579 const addr_t exe_file_addr = exe_symbol->GetAddress().GetFileAddress();
7580 if (exe_file_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL))
7581 {
7582 if (location.Update_DW_OP_addr (exe_file_addr))
7583 {
7584 linked_oso_file_addr = true;
7585 symbol_context_scope = exe_symbol;
7586 }
7587 }
7588 }
7589 }
7590 }
7591 }
7592 }
7593
7594 if (!linked_oso_file_addr)
7595 {
7596 // The DW_OP_addr is not zero, but it contains a .o file address which
7597 // needs to be linked up correctly.
7598 const lldb::addr_t exe_file_addr = debug_map_symfile->LinkOSOFileAddress(this, location_DW_OP_addr);
7599 if (exe_file_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL))
7600 {
7601 // Update the file address for this variable
7602 location.Update_DW_OP_addr (exe_file_addr);
7603 }
7604 else
7605 {
7606 // Variable didn't make it into the final executable
7607 return var_sp;
7608 }
7609 }
7610 }
7611 }
7612 else
7613 {
7614 scope = eValueTypeVariableLocal;
7615 }
7616 }
7617
7618 if (symbol_context_scope == NULL__null)
7619 {
7620 switch (parent_tag)
7621 {
7622 case DW_TAG_subprogram:
7623 case DW_TAG_inlined_subroutine:
7624 case DW_TAG_lexical_block:
7625 if (sc.function)
7626 {
7627 symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7628 if (symbol_context_scope == NULL__null)
7629 symbol_context_scope = sc.function;
7630 }
7631 break;
7632
7633 default:
7634 symbol_context_scope = sc.comp_unit;
7635 break;
7636 }
7637 }
7638
7639 if (symbol_context_scope)
7640 {
7641 SymbolFileTypeSP type_sp(new SymbolFileType(*this, type_uid));
7642
7643 if (const_value.Form() && type_sp && type_sp->GetType())
7644 location.CopyOpcodeData(const_value.Unsigned(), type_sp->GetType()->GetByteSize(), dwarf_cu->GetAddressByteSize());
7645
7646 var_sp.reset (new Variable (MakeUserID(die->GetOffset()),
7647 name,
7648 mangled,
7649 type_sp,
7650 scope,
7651 symbol_context_scope,
7652 &decl,
7653 location,
7654 is_external,
7655 is_artificial));
7656
7657 var_sp->SetLocationIsConstantValueData (location_is_const_value_data);
7658 }
7659 else
7660 {
7661 // Not ready to parse this variable yet. It might be a global
7662 // or static variable that is in a function scope and the function
7663 // in the symbol context wasn't filled in yet
7664 return var_sp;
7665 }
7666 }
7667 // Cache var_sp even if NULL (the variable was just a specification or
7668 // was missing vital information to be able to be displayed in the debugger
7669 // (missing location due to optimization, etc)) so we don't re-parse
7670 // this DIE over and over later...
7671 m_die_to_variable_sp[die] = var_sp;
7672 }
7673 return var_sp;
7674}
7675
7676
7677const DWARFDebugInfoEntry *
7678SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset,
7679 dw_offset_t spec_block_die_offset,
7680 DWARFCompileUnit **result_die_cu_handle)
7681{
7682 // Give the concrete function die specified by "func_die_offset", find the
7683 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7684 // to "spec_block_die_offset"
7685 DWARFDebugInfo* info = DebugInfo();
7686
7687 const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle);
7688 if (die)
7689 {
7690 assert (*result_die_cu_handle)((*result_die_cu_handle) ? static_cast<void> (0) : __assert_fail
("*result_die_cu_handle", "/tmp/buildd/llvm-toolchain-snapshot-3.6~svn219601/tools/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp"
, 7690, __PRETTY_FUNCTION__))
;
7691 return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle);
7692 }
7693 return NULL__null;
7694}
7695
7696
7697const DWARFDebugInfoEntry *
7698SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu,
7699 const DWARFDebugInfoEntry *die,
7700 dw_offset_t spec_block_die_offset,
7701 DWARFCompileUnit **result_die_cu_handle)
7702{
7703 if (die)
7704 {
7705 switch (die->Tag())
7706 {
7707 case DW_TAG_subprogram:
7708 case DW_TAG_inlined_subroutine:
7709 case DW_TAG_lexical_block:
7710 {
7711 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET(~(dw_offset_t)0)) == spec_block_die_offset)
7712 {
7713 *result_die_cu_handle = dwarf_cu;
7714 return die;
7715 }
7716
7717 if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET(~(dw_offset_t)0)) == spec_block_die_offset)
7718 {
7719 *result_die_cu_handle = dwarf_cu;
7720 return die;
7721 }
7722 }
7723 break;
7724 }
7725
7726 // Give the concrete function die specified by "func_die_offset", find the
7727 // concrete block whose DW_AT_specification or DW_AT_abstract_origin points
7728 // to "spec_block_die_offset"
7729 for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL__null; child_die = child_die->GetSibling())
7730 {
7731 const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu,
7732 child_die,
7733 spec_block_die_offset,
7734 result_die_cu_handle);
7735 if (result_die)
7736 return result_die;
7737 }
7738 }
7739
7740 *result_die_cu_handle = NULL__null;
7741 return NULL__null;
7742}
7743
7744size_t
7745SymbolFileDWARF::ParseVariables
7746(
7747 const SymbolContext& sc,
7748 DWARFCompileUnit* dwarf_cu,
7749 const lldb::addr_t func_low_pc,
7750 const DWARFDebugInfoEntry *orig_die,
7751 bool parse_siblings,
7752 bool parse_children,
7753 VariableList* cc_variable_list
7754)
7755{
7756 if (orig_die == NULL__null)
7757 return 0;
7758
7759 VariableListSP variable_list_sp;
7760
7761 size_t vars_added = 0;
7762 const DWARFDebugInfoEntry *die = orig_die;
7763 while (die != NULL__null)
7764 {
7765 dw_tag_t tag = die->Tag();
7766
7767 // Check to see if we have already parsed this variable or constant?
7768 if (m_die_to_variable_sp[die])
7769 {
7770 if (cc_variable_list)
7771 cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]);
7772 }
7773 else
7774 {
7775 // We haven't already parsed it, lets do that now.
7776 if ((tag == DW_TAG_variable) ||
7777 (tag == DW_TAG_constant) ||
7778 (tag == DW_TAG_formal_parameter && sc.function))
7779 {
7780 if (variable_list_sp.get() == NULL__null)
7781 {
7782 const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die);
7783 dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
7784 switch (parent_tag)
7785 {
7786 case DW_TAG_compile_unit:
7787 if (sc.comp_unit != NULL__null)
7788 {
7789 variable_list_sp = sc.comp_unit->GetVariableList(false);
7790 if (variable_list_sp.get() == NULL__null)
7791 {
7792 variable_list_sp.reset(new VariableList());
7793 sc.comp_unit->SetVariableList(variable_list_sp);
7794 }
7795 }
7796 else
7797 {
7798 GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8" PRIx64"l" "x" " %s with no valid compile unit in symbol context for 0x%8.8" PRIx64"l" "x" " %s.\n",
7799 MakeUserID(sc_parent_die->GetOffset()),
7800 DW_TAG_value_to_name (parent_tag),
7801 MakeUserID(orig_die->GetOffset()),
7802 DW_TAG_value_to_name (orig_die->Tag()));
7803 }
7804 break;
7805
7806 case DW_TAG_subprogram:
7807 case DW_TAG_inlined_subroutine:
7808 case DW_TAG_lexical_block:
7809 if (sc.function != NULL__null)
7810 {
7811 // Check to see if we already have parsed the variables for the given scope
7812
7813 Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
7814 if (block == NULL__null)
7815 {
7816 // This must be a specification or abstract origin with
7817 // a concrete block counterpart in the current function. We need
7818 // to find the concrete block so we can correctly add the
7819 // variable to it
7820 DWARFCompileUnit *concrete_block_die_cu = dwarf_cu;
7821 const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(),
7822 sc_parent_die->GetOffset(),
7823 &concrete_block_die_cu);
7824 if (concrete_block_die)
7825 block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset()));
7826 }
7827
7828 if (block != NULL__null)
7829 {
7830 const bool can_create = false;
7831 variable_list_sp = block->GetBlockVariableList (can_create);
7832 if (variable_list_sp.get() == NULL__null)
7833 {
7834 variable_list_sp.reset(new VariableList());
7835 block->SetVariableList(variable_list_sp);
7836 }
7837 }
7838 }
7839 break;
7840
7841 default:
7842 GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8" PRIx64"l" "x" " %s.\n",
7843 MakeUserID(orig_die->GetOffset()),
7844 DW_TAG_value_to_name (orig_die->Tag()));
7845 break;
7846 }
7847 }
7848
7849 if (variable_list_sp)
7850 {
7851 VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc));
7852 if (var_sp)
7853 {
7854 variable_list_sp->AddVariableIfUnique (var_sp);
7855 if (cc_variable_list)
7856 cc_variable_list->AddVariableIfUnique (var_sp);
7857 ++vars_added;
7858 }
7859 }
7860 }
7861 }
7862
7863 bool skip_children = (sc.function == NULL__null && tag == DW_TAG_subprogram);
7864
7865 if (!skip_children && parse_children && die->HasChildren())
7866 {
7867 vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list);
7868 }
7869
7870 if (parse_siblings)
7871 die = die->GetSibling();
7872 else
7873 die = NULL__null;
7874 }
7875 return vars_added;
7876}
7877
7878//------------------------------------------------------------------
7879// PluginInterface protocol
7880//------------------------------------------------------------------
7881ConstString
7882SymbolFileDWARF::GetPluginName()
7883{
7884 return GetPluginNameStatic();
7885}
7886
7887uint32_t
7888SymbolFileDWARF::GetPluginVersion()
7889{
7890 return 1;
7891}
7892
7893void
7894SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl)
7895{
7896 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7897 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7898 if (clang_type)
7899 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7900}
7901
7902void
7903SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl)
7904{
7905 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
7906 ClangASTType clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
7907 if (clang_type)
7908 symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
7909}
7910
7911void
7912SymbolFileDWARF::DumpIndexes ()
7913{
7914 StreamFile s(stdoutstdout, false);
7915
7916 s.Printf ("DWARF index for (%s) '%s':",
7917 GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(),
7918 GetObjectFile()->GetFileSpec().GetPath().c_str());
7919 s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s);
7920 s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s);
7921 s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s);
7922 s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s);
7923 s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s);
7924 s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s);
7925 s.Printf("\nTypes:\n"); m_type_index.Dump (&s);
7926 s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s);
7927}
7928
7929void
7930SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context,
7931 const char *name,
7932 llvm::SmallVectorImpl <clang::NamedDecl *> *results)
7933{
7934 DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context);
7935
7936 if (iter == m_decl_ctx_to_die.end())
7937 return;
7938
7939 for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos)
7940 {
7941 const DWARFDebugInfoEntry *context_die = *pos;
7942
7943 if (!results)
7944 return;
7945
7946 DWARFDebugInfo* info = DebugInfo();
7947
7948 DIEArray die_offsets;
7949
7950 DWARFCompileUnit* dwarf_cu = NULL__null;
7951 const DWARFDebugInfoEntry* die = NULL__null;
7952
7953 if (m_using_apple_tables)
7954 {
7955 if (m_apple_types_ap.get())
7956 m_apple_types_ap->FindByName (name, die_offsets);
7957 }
7958 else
7959 {
7960 if (!m_indexed)
7961 Index ();
7962
7963 m_type_index.Find (ConstString(name), die_offsets);
7964 }
7965
7966 const size_t num_matches = die_offsets.size();
7967
7968 if (num_matches)
7969 {
7970 for (size_t i = 0; i < num_matches; ++i)
7971 {
7972 const dw_offset_t die_offset = die_offsets[i];
7973 die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
7974
7975 if (die->GetParent() != context_die)
7976 continue;
7977
7978 Type *matching_type = ResolveType (dwarf_cu, die);
7979
7980 clang::QualType qual_type = matching_type->GetClangForwardType().GetQualType();
7981
7982 if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr()))
7983 {
7984 clang::TagDecl *tag_decl = tag_type->getDecl();
7985 results->push_back(tag_decl);
7986 }
7987 else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr()))
7988 {
7989 clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl();
7990 results->push_back(typedef_decl);
7991 }
7992 }
7993 }
7994 }
7995}
7996
7997void
7998SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton,
7999 const clang::DeclContext *decl_context,
8000 clang::DeclarationName decl_name,
8001 llvm::SmallVectorImpl <clang::NamedDecl *> *results)
8002{
8003
8004 switch (decl_context->getDeclKind())
8005 {
8006 case clang::Decl::Namespace:
8007 case clang::Decl::TranslationUnit:
8008 {
8009 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
8010 symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results);
8011 }
8012 break;
8013 default:
8014 break;
8015 }
8016}
8017
8018bool
8019SymbolFileDWARF::LayoutRecordType (void *baton,
8020 const clang::RecordDecl *record_decl,
8021 uint64_t &size,
8022 uint64_t &alignment,
8023 llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
8024 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
8025 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
8026{
8027 SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
8028 return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets);
8029}
8030
8031
8032bool
8033SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl,
8034 uint64_t &bit_size,
8035 uint64_t &alignment,
8036 llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
8037 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
8038 llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
8039{
8040 Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO(1u << 1)));
8041 RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl);
8042 bool success = false;
8043 base_offsets.clear();
8044 vbase_offsets.clear();
8045 if (pos != m_record_decl_to_layout_map.end())
8046 {
8047 bit_size = pos->second.bit_size;
8048 alignment = pos->second.alignment;
8049 field_offsets.swap(pos->second.field_offsets);
8050 base_offsets.swap (pos->second.base_offsets);
8051 vbase_offsets.swap (pos->second.vbase_offsets);
8052 m_record_decl_to_layout_map.erase(pos);
8053 success = true;
8054 }
8055 else
8056 {
8057 bit_size = 0;
8058 alignment = 0;
8059 field_offsets.clear();
8060 }
8061
8062 if (log)
8063 GetObjectFile()->GetModule()->LogMessage (log,
8064 "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %" PRIu64"l" "u" ", alignment = %" PRIu64"l" "u" ", field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i",
8065 static_cast<const void*>(record_decl),
8066 bit_size, alignment,
8067 static_cast<uint32_t>(field_offsets.size()),
8068 static_cast<uint32_t>(base_offsets.size()),
8069 static_cast<uint32_t>(vbase_offsets.size()),
8070 success);
8071 return success;
8072}
8073
8074
8075SymbolFileDWARFDebugMap *
8076SymbolFileDWARF::GetDebugMapSymfile ()
8077{
8078 if (m_debug_map_symfile == NULL__null && !m_debug_map_module_wp.expired())
8079 {
8080 lldb::ModuleSP module_sp (m_debug_map_module_wp.lock());
8081 if (module_sp)
8082 {
8083 SymbolVendor *sym_vendor = module_sp->GetSymbolVendor();
8084 if (sym_vendor)
8085 m_debug_map_symfile = (SymbolFileDWARFDebugMap *)sym_vendor->GetSymbolFile();
8086 }
8087 }
8088 return m_debug_map_symfile;
8089}
8090
8091