Bug Summary

File:tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
Warning:line 1371, column 21
Value stored to 'class_symfile' is never read

Annotated Source Code

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1//===-- DWARFASTParserClang.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 <stdlib.h>
11
12#include "DWARFASTParserClang.h"
13#include "DWARFCompileUnit.h"
14#include "DWARFDIE.h"
15#include "DWARFDIECollection.h"
16#include "DWARFDebugInfo.h"
17#include "DWARFDeclContext.h"
18#include "DWARFDefines.h"
19#include "SymbolFileDWARF.h"
20#include "SymbolFileDWARFDebugMap.h"
21#include "UniqueDWARFASTType.h"
22
23#include "Plugins/Language/ObjC/ObjCLanguage.h"
24#include "lldb/Core/Module.h"
25#include "lldb/Core/Value.h"
26#include "lldb/Host/Host.h"
27#include "lldb/Interpreter/Args.h"
28#include "lldb/Symbol/ClangASTImporter.h"
29#include "lldb/Symbol/ClangExternalASTSourceCommon.h"
30#include "lldb/Symbol/ClangUtil.h"
31#include "lldb/Symbol/CompileUnit.h"
32#include "lldb/Symbol/Function.h"
33#include "lldb/Symbol/ObjectFile.h"
34#include "lldb/Symbol/SymbolVendor.h"
35#include "lldb/Symbol/TypeList.h"
36#include "lldb/Symbol/TypeMap.h"
37#include "lldb/Target/Language.h"
38#include "lldb/Utility/LLDBAssert.h"
39#include "lldb/Utility/Log.h"
40#include "lldb/Utility/StreamString.h"
41
42#include "clang/AST/DeclCXX.h"
43#include "clang/AST/DeclObjC.h"
44
45#include <map>
46#include <vector>
47
48//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
49
50#ifdef ENABLE_DEBUG_PRINTF
51#include <stdio.h>
52#define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
53#else
54#define DEBUG_PRINTF(fmt, ...)
55#endif
56
57using namespace lldb;
58using namespace lldb_private;
59DWARFASTParserClang::DWARFASTParserClang(ClangASTContext &ast)
60 : m_ast(ast), m_die_to_decl_ctx(), m_decl_ctx_to_die() {}
61
62DWARFASTParserClang::~DWARFASTParserClang() {}
63
64static AccessType DW_ACCESS_to_AccessType(uint32_t dwarf_accessibility) {
65 switch (dwarf_accessibility) {
66 case DW_ACCESS_public:
67 return eAccessPublic;
68 case DW_ACCESS_private:
69 return eAccessPrivate;
70 case DW_ACCESS_protected:
71 return eAccessProtected;
72 default:
73 break;
74 }
75 return eAccessNone;
76}
77
78static bool DeclKindIsCXXClass(clang::Decl::Kind decl_kind) {
79 switch (decl_kind) {
80 case clang::Decl::CXXRecord:
81 case clang::Decl::ClassTemplateSpecialization:
82 return true;
83 default:
84 break;
85 }
86 return false;
87}
88
89struct BitfieldInfo {
90 uint64_t bit_size;
91 uint64_t bit_offset;
92
93 BitfieldInfo()
94 : bit_size(LLDB_INVALID_ADDRESS(18446744073709551615UL)), bit_offset(LLDB_INVALID_ADDRESS(18446744073709551615UL)) {}
95
96 void Clear() {
97 bit_size = LLDB_INVALID_ADDRESS(18446744073709551615UL);
98 bit_offset = LLDB_INVALID_ADDRESS(18446744073709551615UL);
99 }
100
101 bool IsValid() const {
102 return (bit_size != LLDB_INVALID_ADDRESS(18446744073709551615UL)) &&
103 (bit_offset != LLDB_INVALID_ADDRESS(18446744073709551615UL));
104 }
105
106 bool NextBitfieldOffsetIsValid(const uint64_t next_bit_offset) const {
107 if (IsValid()) {
108 // This bitfield info is valid, so any subsequent bitfields
109 // must not overlap and must be at a higher bit offset than
110 // any previous bitfield + size.
111 return (bit_size + bit_offset) <= next_bit_offset;
112 } else {
113 // If the this BitfieldInfo is not valid, then any offset isOK
114 return true;
115 }
116 }
117};
118
119ClangASTImporter &DWARFASTParserClang::GetClangASTImporter() {
120 if (!m_clang_ast_importer_ap) {
121 m_clang_ast_importer_ap.reset(new ClangASTImporter);
122 }
123 return *m_clang_ast_importer_ap;
124}
125
126TypeSP DWARFASTParserClang::ParseTypeFromDWO(const DWARFDIE &die, Log *log) {
127 ModuleSP dwo_module_sp = die.GetContainingDWOModule();
128 if (dwo_module_sp) {
129 // This type comes from an external DWO module
130 std::vector<CompilerContext> dwo_context;
131 die.GetDWOContext(dwo_context);
132 TypeMap dwo_types;
133 if (dwo_module_sp->GetSymbolVendor()->FindTypes(dwo_context, true,
134 dwo_types)) {
135 const size_t num_dwo_types = dwo_types.GetSize();
136 if (num_dwo_types == 1) {
137 // We found a real definition for this type elsewhere
138 // so lets use it and cache the fact that we found
139 // a complete type for this die
140 TypeSP dwo_type_sp = dwo_types.GetTypeAtIndex(0);
141 if (dwo_type_sp) {
142 lldb_private::CompilerType dwo_type =
143 dwo_type_sp->GetForwardCompilerType();
144
145 lldb_private::CompilerType type =
146 GetClangASTImporter().CopyType(m_ast, dwo_type);
147
148 // printf ("copied_qual_type: ast = %p, clang_type = %p, name =
149 // '%s'\n", m_ast, copied_qual_type.getAsOpaquePtr(),
150 // external_type->GetName().GetCString());
151 if (type) {
152 SymbolFileDWARF *dwarf = die.GetDWARF();
153 TypeSP type_sp(new Type(die.GetID(), dwarf, dwo_type_sp->GetName(),
154 dwo_type_sp->GetByteSize(), NULL__null,
155 LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingInvalid,
156 &dwo_type_sp->GetDeclaration(), type,
157 Type::eResolveStateForward));
158
159 dwarf->GetTypeList()->Insert(type_sp);
160 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
161 clang::TagDecl *tag_decl = ClangASTContext::GetAsTagDecl(type);
162 if (tag_decl)
163 LinkDeclContextToDIE(tag_decl, die);
164 else {
165 clang::DeclContext *defn_decl_ctx =
166 GetCachedClangDeclContextForDIE(die);
167 if (defn_decl_ctx)
168 LinkDeclContextToDIE(defn_decl_ctx, die);
169 }
170 return type_sp;
171 }
172 }
173 }
174 }
175 }
176 return TypeSP();
177}
178
179TypeSP DWARFASTParserClang::ParseTypeFromDWARF(const SymbolContext &sc,
180 const DWARFDIE &die, Log *log,
181 bool *type_is_new_ptr) {
182 TypeSP type_sp;
183
184 if (type_is_new_ptr)
185 *type_is_new_ptr = false;
186
187 AccessType accessibility = eAccessNone;
188 if (die) {
189 SymbolFileDWARF *dwarf = die.GetDWARF();
190 if (log) {
191 DWARFDIE context_die;
192 clang::DeclContext *context =
193 GetClangDeclContextContainingDIE(die, &context_die);
194
195 dwarf->GetObjectFile()->GetModule()->LogMessage(
196 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die "
197 "0x%8.8x)) %s name = '%s')",
198 die.GetOffset(), static_cast<void *>(context),
199 context_die.GetOffset(), die.GetTagAsCString(), die.GetName());
200 }
201 //
202 // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
203 // if (log && dwarf_cu)
204 // {
205 // StreamString s;
206 // die->DumpLocation (this, dwarf_cu, s);
207 // dwarf->GetObjectFile()->GetModule()->LogMessage (log,
208 // "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
209 //
210 // }
211
212 Type *type_ptr = dwarf->GetDIEToType().lookup(die.GetDIE());
213 TypeList *type_list = dwarf->GetTypeList();
214 if (type_ptr == NULL__null) {
215 if (type_is_new_ptr)
216 *type_is_new_ptr = true;
217
218 const dw_tag_t tag = die.Tag();
219
220 bool is_forward_declaration = false;
221 DWARFAttributes attributes;
222 const char *type_name_cstr = NULL__null;
223 ConstString type_name_const_str;
224 Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
225 uint64_t byte_size = 0;
226 Declaration decl;
227
228 Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
229 CompilerType clang_type;
230 DWARFFormValue form_value;
231
232 dw_attr_t attr;
233
234 switch (tag) {
235 case DW_TAG_typedef:
236 case DW_TAG_base_type:
237 case DW_TAG_pointer_type:
238 case DW_TAG_reference_type:
239 case DW_TAG_rvalue_reference_type:
240 case DW_TAG_const_type:
241 case DW_TAG_restrict_type:
242 case DW_TAG_volatile_type:
243 case DW_TAG_unspecified_type: {
244 // Set a bit that lets us know that we are currently parsing this
245 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
246
247 const size_t num_attributes = die.GetAttributes(attributes);
248 uint32_t encoding = 0;
249 DWARFFormValue encoding_uid;
250
251 if (num_attributes > 0) {
252 uint32_t i;
253 for (i = 0; i < num_attributes; ++i) {
254 attr = attributes.AttributeAtIndex(i);
255 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
256 switch (attr) {
257 case DW_AT_decl_file:
258 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
259 form_value.Unsigned()));
260 break;
261 case DW_AT_decl_line:
262 decl.SetLine(form_value.Unsigned());
263 break;
264 case DW_AT_decl_column:
265 decl.SetColumn(form_value.Unsigned());
266 break;
267 case DW_AT_name:
268
269 type_name_cstr = form_value.AsCString();
270 // Work around a bug in llvm-gcc where they give a name to a
271 // reference type which doesn't
272 // include the "&"...
273 if (tag == DW_TAG_reference_type) {
274 if (strchr(type_name_cstr, '&') == NULL__null)
275 type_name_cstr = NULL__null;
276 }
277 if (type_name_cstr)
278 type_name_const_str.SetCString(type_name_cstr);
279 break;
280 case DW_AT_byte_size:
281 byte_size = form_value.Unsigned();
282 break;
283 case DW_AT_encoding:
284 encoding = form_value.Unsigned();
285 break;
286 case DW_AT_type:
287 encoding_uid = form_value;
288 break;
289 default:
290 case DW_AT_sibling:
291 break;
292 }
293 }
294 }
295 }
296
297 if (tag == DW_TAG_typedef && encoding_uid.IsValid()) {
298 // Try to parse a typedef from the DWO file first as modules
299 // can contain typedef'ed structures that have no names like:
300 //
301 // typedef struct { int a; } Foo;
302 //
303 // In this case we will have a structure with no name and a
304 // typedef named "Foo" that points to this unnamed structure.
305 // The name in the typedef is the only identifier for the struct,
306 // so always try to get typedefs from DWO files if possible.
307 //
308 // The type_sp returned will be empty if the typedef doesn't exist
309 // in a DWO file, so it is cheap to call this function just to check.
310 //
311 // If we don't do this we end up creating a TypeSP that says this
312 // is a typedef to type 0x123 (the DW_AT_type value would be 0x123
313 // in the DW_TAG_typedef), and this is the unnamed structure type.
314 // We will have a hard time tracking down an unnammed structure
315 // type in the module DWO file, so we make sure we don't get into
316 // this situation by always resolving typedefs from the DWO file.
317 const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid));
318
319 // First make sure that the die that this is typedef'ed to _is_
320 // just a declaration (DW_AT_declaration == 1), not a full definition
321 // since template types can't be represented in modules since only
322 // concrete instances of templates are ever emitted and modules
323 // won't contain those
324 if (encoding_die &&
325 encoding_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) ==
326 1) {
327 type_sp = ParseTypeFromDWO(die, log);
328 if (type_sp)
329 return type_sp;
330 }
331 }
332
333 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n",
334 die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr,
335 encoding_uid.Reference());
336
337 switch (tag) {
338 default:
339 break;
340
341 case DW_TAG_unspecified_type:
342 if (strcmp(type_name_cstr, "nullptr_t") == 0 ||
343 strcmp(type_name_cstr, "decltype(nullptr)") == 0) {
344 resolve_state = Type::eResolveStateFull;
345 clang_type = m_ast.GetBasicType(eBasicTypeNullPtr);
346 break;
347 }
348 // Fall through to base type below in case we can handle the type
349 // there...
350 LLVM_FALLTHROUGH[[clang::fallthrough]];
351
352 case DW_TAG_base_type:
353 resolve_state = Type::eResolveStateFull;
354 clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize(
355 type_name_cstr, encoding, byte_size * 8);
356 break;
357
358 case DW_TAG_pointer_type:
359 encoding_data_type = Type::eEncodingIsPointerUID;
360 break;
361 case DW_TAG_reference_type:
362 encoding_data_type = Type::eEncodingIsLValueReferenceUID;
363 break;
364 case DW_TAG_rvalue_reference_type:
365 encoding_data_type = Type::eEncodingIsRValueReferenceUID;
366 break;
367 case DW_TAG_typedef:
368 encoding_data_type = Type::eEncodingIsTypedefUID;
369 break;
370 case DW_TAG_const_type:
371 encoding_data_type = Type::eEncodingIsConstUID;
372 break;
373 case DW_TAG_restrict_type:
374 encoding_data_type = Type::eEncodingIsRestrictUID;
375 break;
376 case DW_TAG_volatile_type:
377 encoding_data_type = Type::eEncodingIsVolatileUID;
378 break;
379 }
380
381 if (!clang_type &&
382 (encoding_data_type == Type::eEncodingIsPointerUID ||
383 encoding_data_type == Type::eEncodingIsTypedefUID) &&
384 sc.comp_unit != NULL__null) {
385 if (tag == DW_TAG_pointer_type) {
386 DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type);
387
388 if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0)) {
389 // Blocks have a __FuncPtr inside them which is a pointer to a
390 // function of the proper type.
391
392 for (DWARFDIE child_die = target_die.GetFirstChild();
393 child_die.IsValid(); child_die = child_die.GetSibling()) {
394 if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""),
395 "__FuncPtr")) {
396 DWARFDIE function_pointer_type =
397 child_die.GetReferencedDIE(DW_AT_type);
398
399 if (function_pointer_type) {
400 DWARFDIE function_type =
401 function_pointer_type.GetReferencedDIE(DW_AT_type);
402
403 bool function_type_is_new_pointer;
404 TypeSP lldb_function_type_sp = ParseTypeFromDWARF(
405 sc, function_type, log, &function_type_is_new_pointer);
406
407 if (lldb_function_type_sp) {
408 clang_type = m_ast.CreateBlockPointerType(
409 lldb_function_type_sp->GetForwardCompilerType());
410 encoding_data_type = Type::eEncodingIsUID;
411 encoding_uid.Clear();
412 resolve_state = Type::eResolveStateFull;
413 }
414 }
415
416 break;
417 }
418 }
419 }
420 }
421
422 bool translation_unit_is_objc =
423 (sc.comp_unit->GetLanguage() == eLanguageTypeObjC ||
424 sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus);
425
426 if (translation_unit_is_objc) {
427 if (type_name_cstr != NULL__null) {
428 static ConstString g_objc_type_name_id("id");
429 static ConstString g_objc_type_name_Class("Class");
430 static ConstString g_objc_type_name_selector("SEL");
431
432 if (type_name_const_str == g_objc_type_name_id) {
433 if (log)
434 dwarf->GetObjectFile()->GetModule()->LogMessage(
435 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
436 "is Objective C 'id' built-in type.",
437 die.GetOffset(), die.GetTagAsCString(), die.GetName());
438 clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
439 encoding_data_type = Type::eEncodingIsUID;
440 encoding_uid.Clear();
441 resolve_state = Type::eResolveStateFull;
442
443 } else if (type_name_const_str == g_objc_type_name_Class) {
444 if (log)
445 dwarf->GetObjectFile()->GetModule()->LogMessage(
446 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
447 "is Objective C 'Class' built-in type.",
448 die.GetOffset(), die.GetTagAsCString(), die.GetName());
449 clang_type = m_ast.GetBasicType(eBasicTypeObjCClass);
450 encoding_data_type = Type::eEncodingIsUID;
451 encoding_uid.Clear();
452 resolve_state = Type::eResolveStateFull;
453 } else if (type_name_const_str == g_objc_type_name_selector) {
454 if (log)
455 dwarf->GetObjectFile()->GetModule()->LogMessage(
456 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
457 "is Objective C 'selector' built-in type.",
458 die.GetOffset(), die.GetTagAsCString(), die.GetName());
459 clang_type = m_ast.GetBasicType(eBasicTypeObjCSel);
460 encoding_data_type = Type::eEncodingIsUID;
461 encoding_uid.Clear();
462 resolve_state = Type::eResolveStateFull;
463 }
464 } else if (encoding_data_type == Type::eEncodingIsPointerUID &&
465 encoding_uid.IsValid()) {
466 // Clang sometimes erroneously emits id as objc_object*. In that
467 // case we fix up the type to "id".
468
469 const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid));
470
471 if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) {
472 if (const char *struct_name = encoding_die.GetName()) {
473 if (!strcmp(struct_name, "objc_object")) {
474 if (log)
475 dwarf->GetObjectFile()->GetModule()->LogMessage(
476 log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s "
477 "'%s' is 'objc_object*', which we overrode to "
478 "'id'.",
479 die.GetOffset(), die.GetTagAsCString(),
480 die.GetName());
481 clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
482 encoding_data_type = Type::eEncodingIsUID;
483 encoding_uid.Clear();
484 resolve_state = Type::eResolveStateFull;
485 }
486 }
487 }
488 }
489 }
490 }
491
492 type_sp.reset(
493 new Type(die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null,
494 DIERef(encoding_uid).GetUID(dwarf), encoding_data_type,
495 &decl, clang_type, resolve_state));
496
497 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
498
499 // Type* encoding_type =
500 // GetUniquedTypeForDIEOffset(encoding_uid, type_sp,
501 // NULL, 0, 0, false);
502 // if (encoding_type != NULL)
503 // {
504 // if (encoding_type != DIE_IS_BEING_PARSED)
505 // type_sp->SetEncodingType(encoding_type);
506 // else
507 // m_indirect_fixups.push_back(type_sp.get());
508 // }
509 } break;
510
511 case DW_TAG_structure_type:
512 case DW_TAG_union_type:
513 case DW_TAG_class_type: {
514 // Set a bit that lets us know that we are currently parsing this
515 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
516 bool byte_size_valid = false;
517
518 LanguageType class_language = eLanguageTypeUnknown;
519 bool is_complete_objc_class = false;
520 // bool struct_is_class = false;
521 const size_t num_attributes = die.GetAttributes(attributes);
522 if (num_attributes > 0) {
523 uint32_t i;
524 for (i = 0; i < num_attributes; ++i) {
525 attr = attributes.AttributeAtIndex(i);
526 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
527 switch (attr) {
528 case DW_AT_decl_file:
529 if (die.GetCU()->DW_AT_decl_file_attributes_are_invalid()) {
530 // llvm-gcc outputs invalid DW_AT_decl_file attributes that
531 // always
532 // point to the compile unit file, so we clear this invalid
533 // value
534 // so that we can still unique types efficiently.
535 decl.SetFile(FileSpec("<invalid>", false));
536 } else
537 decl.SetFile(
538 sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
539 form_value.Unsigned()));
540 break;
541
542 case DW_AT_decl_line:
543 decl.SetLine(form_value.Unsigned());
544 break;
545
546 case DW_AT_decl_column:
547 decl.SetColumn(form_value.Unsigned());
548 break;
549
550 case DW_AT_name:
551 type_name_cstr = form_value.AsCString();
552 type_name_const_str.SetCString(type_name_cstr);
553 break;
554
555 case DW_AT_byte_size:
556 byte_size = form_value.Unsigned();
557 byte_size_valid = true;
558 break;
559
560 case DW_AT_accessibility:
561 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
562 break;
563
564 case DW_AT_declaration:
565 is_forward_declaration = form_value.Boolean();
566 break;
567
568 case DW_AT_APPLE_runtime_class:
569 class_language = (LanguageType)form_value.Signed();
570 break;
571
572 case DW_AT_APPLE_objc_complete_type:
573 is_complete_objc_class = form_value.Signed();
574 break;
575
576 case DW_AT_allocated:
577 case DW_AT_associated:
578 case DW_AT_data_location:
579 case DW_AT_description:
580 case DW_AT_start_scope:
581 case DW_AT_visibility:
582 default:
583 case DW_AT_sibling:
584 break;
585 }
586 }
587 }
588 }
589
590 // UniqueDWARFASTType is large, so don't create a local variables on the
591 // stack, put it on the heap. This function is often called recursively
592 // and clang isn't good and sharing the stack space for variables in
593 // different blocks.
594 std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap(
595 new UniqueDWARFASTType());
596
597 ConstString unique_typename(type_name_const_str);
598 Declaration unique_decl(decl);
599
600 if (type_name_const_str) {
601 LanguageType die_language = die.GetLanguage();
602 if (Language::LanguageIsCPlusPlus(die_language)) {
603 // For C++, we rely solely upon the one definition rule that says
604 // only
605 // one thing can exist at a given decl context. We ignore the file
606 // and
607 // line that things are declared on.
608 std::string qualified_name;
609 if (die.GetQualifiedName(qualified_name))
610 unique_typename = ConstString(qualified_name);
611 unique_decl.Clear();
612 }
613
614 if (dwarf->GetUniqueDWARFASTTypeMap().Find(
615 unique_typename, die, unique_decl,
616 byte_size_valid ? byte_size : -1, *unique_ast_entry_ap)) {
617 type_sp = unique_ast_entry_ap->m_type_sp;
618 if (type_sp) {
619 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
620 return type_sp;
621 }
622 }
623 }
624
625 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
626 DW_TAG_value_to_name(tag), type_name_cstr);
627
628 int tag_decl_kind = -1;
629 AccessType default_accessibility = eAccessNone;
630 if (tag == DW_TAG_structure_type) {
631 tag_decl_kind = clang::TTK_Struct;
632 default_accessibility = eAccessPublic;
633 } else if (tag == DW_TAG_union_type) {
634 tag_decl_kind = clang::TTK_Union;
635 default_accessibility = eAccessPublic;
636 } else if (tag == DW_TAG_class_type) {
637 tag_decl_kind = clang::TTK_Class;
638 default_accessibility = eAccessPrivate;
639 }
640
641 if (byte_size_valid && byte_size == 0 && type_name_cstr &&
642 die.HasChildren() == false &&
643 sc.comp_unit->GetLanguage() == eLanguageTypeObjC) {
644 // Work around an issue with clang at the moment where
645 // forward declarations for objective C classes are emitted
646 // as:
647 // DW_TAG_structure_type [2]
648 // DW_AT_name( "ForwardObjcClass" )
649 // DW_AT_byte_size( 0x00 )
650 // DW_AT_decl_file( "..." )
651 // DW_AT_decl_line( 1 )
652 //
653 // Note that there is no DW_AT_declaration and there are
654 // no children, and the byte size is zero.
655 is_forward_declaration = true;
656 }
657
658 if (class_language == eLanguageTypeObjC ||
659 class_language == eLanguageTypeObjC_plus_plus) {
660 if (!is_complete_objc_class &&
661 die.Supports_DW_AT_APPLE_objc_complete_type()) {
662 // We have a valid eSymbolTypeObjCClass class symbol whose
663 // name matches the current objective C class that we
664 // are trying to find and this DIE isn't the complete
665 // definition (we checked is_complete_objc_class above and
666 // know it is false), so the real definition is in here somewhere
667 type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE(
668 die, type_name_const_str, true);
669
670 if (!type_sp) {
671 SymbolFileDWARFDebugMap *debug_map_symfile =
672 dwarf->GetDebugMapSymfile();
673 if (debug_map_symfile) {
674 // We weren't able to find a full declaration in
675 // this DWARF, see if we have a declaration anywhere
676 // else...
677 type_sp =
678 debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE(
679 die, type_name_const_str, true);
680 }
681 }
682
683 if (type_sp) {
684 if (log) {
685 dwarf->GetObjectFile()->GetModule()->LogMessage(
686 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an "
687 "incomplete objc type, complete type is 0x%8.8" PRIx64"l" "x",
688 static_cast<void *>(this), die.GetOffset(),
689 DW_TAG_value_to_name(tag), type_name_cstr,
690 type_sp->GetID());
691 }
692
693 // We found a real definition for this type elsewhere
694 // so lets use it and cache the fact that we found
695 // a complete type for this die
696 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
697 return type_sp;
698 }
699 }
700 }
701
702 if (is_forward_declaration) {
703 // We have a forward declaration to a type and we need
704 // to try and find a full declaration. We look in the
705 // current type index just in case we have a forward
706 // declaration followed by an actual declarations in the
707 // DWARF. If this fails, we need to look elsewhere...
708 if (log) {
709 dwarf->GetObjectFile()->GetModule()->LogMessage(
710 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
711 "forward declaration, trying to find complete type",
712 static_cast<void *>(this), die.GetOffset(),
713 DW_TAG_value_to_name(tag), type_name_cstr);
714 }
715
716 // See if the type comes from a DWO module and if so, track down that
717 // type.
718 type_sp = ParseTypeFromDWO(die, log);
719 if (type_sp)
720 return type_sp;
721
722 DWARFDeclContext die_decl_ctx;
723 die.GetDWARFDeclContext(die_decl_ctx);
724
725 // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die,
726 // type_name_const_str);
727 type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
728
729 if (!type_sp) {
730 SymbolFileDWARFDebugMap *debug_map_symfile =
731 dwarf->GetDebugMapSymfile();
732 if (debug_map_symfile) {
733 // We weren't able to find a full declaration in
734 // this DWARF, see if we have a declaration anywhere
735 // else...
736 type_sp =
737 debug_map_symfile->FindDefinitionTypeForDWARFDeclContext(
738 die_decl_ctx);
739 }
740 }
741
742 if (type_sp) {
743 if (log) {
744 dwarf->GetObjectFile()->GetModule()->LogMessage(
745 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
746 "forward declaration, complete type is 0x%8.8" PRIx64"l" "x",
747 static_cast<void *>(this), die.GetOffset(),
748 DW_TAG_value_to_name(tag), type_name_cstr, type_sp->GetID());
749 }
750
751 // We found a real definition for this type elsewhere
752 // so lets use it and cache the fact that we found
753 // a complete type for this die
754 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
755 clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(
756 dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf)));
757 if (defn_decl_ctx)
758 LinkDeclContextToDIE(defn_decl_ctx, die);
759 return type_sp;
760 }
761 }
762 assert(tag_decl_kind != -1)(static_cast <bool> (tag_decl_kind != -1) ? void (0) : __assert_fail
("tag_decl_kind != -1", "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 762, __extension__ __PRETTY_FUNCTION__))
;
763 bool clang_type_was_created = false;
764 clang_type.SetCompilerType(
765 &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE()));
766 if (!clang_type) {
767 clang::DeclContext *decl_ctx =
768 GetClangDeclContextContainingDIE(die, nullptr);
769 if (accessibility == eAccessNone && decl_ctx) {
770 // Check the decl context that contains this class/struct/union.
771 // If it is a class we must give it an accessibility.
772 const clang::Decl::Kind containing_decl_kind =
773 decl_ctx->getDeclKind();
774 if (DeclKindIsCXXClass(containing_decl_kind))
775 accessibility = default_accessibility;
776 }
777
778 ClangASTMetadata metadata;
779 metadata.SetUserID(die.GetID());
780 metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die));
781
782 if (type_name_cstr && strchr(type_name_cstr, '<')) {
783 ClangASTContext::TemplateParameterInfos template_param_infos;
784 if (ParseTemplateParameterInfos(die, template_param_infos)) {
785 clang::ClassTemplateDecl *class_template_decl =
786 m_ast.ParseClassTemplateDecl(decl_ctx, accessibility,
787 type_name_cstr, tag_decl_kind,
788 template_param_infos);
789 if (!class_template_decl) {
790 if (log) {
791 dwarf->GetObjectFile()->GetModule()->LogMessage(
792 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" "
793 "clang::ClassTemplateDecl failed to return a decl.",
794 static_cast<void *>(this), die.GetOffset(),
795 DW_TAG_value_to_name(tag), type_name_cstr);
796 }
797 return TypeSP();
798 }
799
800 clang::ClassTemplateSpecializationDecl
801 *class_specialization_decl =
802 m_ast.CreateClassTemplateSpecializationDecl(
803 decl_ctx, class_template_decl, tag_decl_kind,
804 template_param_infos);
805 clang_type = m_ast.CreateClassTemplateSpecializationType(
806 class_specialization_decl);
807 clang_type_was_created = true;
808
809 m_ast.SetMetadata(class_template_decl, metadata);
810 m_ast.SetMetadata(class_specialization_decl, metadata);
811 }
812 }
813
814 if (!clang_type_was_created) {
815 clang_type_was_created = true;
816 clang_type = m_ast.CreateRecordType(decl_ctx, accessibility,
817 type_name_cstr, tag_decl_kind,
818 class_language, &metadata);
819 }
820 }
821
822 // Store a forward declaration to this class type in case any
823 // parameters in any class methods need it for the clang
824 // types for function prototypes.
825 LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die);
826 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str,
827 byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL),
828 Type::eEncodingIsUID, &decl, clang_type,
829 Type::eResolveStateForward));
830
831 type_sp->SetIsCompleteObjCClass(is_complete_objc_class);
832
833 // Add our type to the unique type map so we don't
834 // end up creating many copies of the same type over
835 // and over in the ASTContext for our module
836 unique_ast_entry_ap->m_type_sp = type_sp;
837 unique_ast_entry_ap->m_die = die;
838 unique_ast_entry_ap->m_declaration = unique_decl;
839 unique_ast_entry_ap->m_byte_size = byte_size;
840 dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename,
841 *unique_ast_entry_ap);
842
843 if (is_forward_declaration && die.HasChildren()) {
844 // Check to see if the DIE actually has a definition, some version of
845 // GCC will
846 // emit DIEs with DW_AT_declaration set to true, but yet still have
847 // subprogram,
848 // members, or inheritance, so we can't trust it
849 DWARFDIE child_die = die.GetFirstChild();
850 while (child_die) {
851 switch (child_die.Tag()) {
852 case DW_TAG_inheritance:
853 case DW_TAG_subprogram:
854 case DW_TAG_member:
855 case DW_TAG_APPLE_property:
856 case DW_TAG_class_type:
857 case DW_TAG_structure_type:
858 case DW_TAG_enumeration_type:
859 case DW_TAG_typedef:
860 case DW_TAG_union_type:
861 child_die.Clear();
862 is_forward_declaration = false;
863 break;
864 default:
865 child_die = child_die.GetSibling();
866 break;
867 }
868 }
869 }
870
871 if (!is_forward_declaration) {
872 // Always start the definition for a class type so that
873 // if the class has child classes or types that require
874 // the class to be created for use as their decl contexts
875 // the class will be ready to accept these child definitions.
876 if (die.HasChildren() == false) {
877 // No children for this struct/union/class, lets finish it
878 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) {
879 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
880 } else {
881 dwarf->GetObjectFile()->GetModule()->ReportError(
882 "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
883 "definition.\nPlease file a bug and attach the file at the "
884 "start of this error message",
885 die.GetOffset(), type_name_cstr);
886 }
887
888 if (tag == DW_TAG_structure_type) // this only applies in C
889 {
890 clang::RecordDecl *record_decl =
891 ClangASTContext::GetAsRecordDecl(clang_type);
892
893 if (record_decl) {
894 GetClangASTImporter().InsertRecordDecl(
895 record_decl, ClangASTImporter::LayoutInfo());
896 }
897 }
898 } else if (clang_type_was_created) {
899 // Start the definition if the class is not objective C since
900 // the underlying decls respond to isCompleteDefinition(). Objective
901 // C decls don't respond to isCompleteDefinition() so we can't
902 // start the declaration definition right away. For C++
903 // class/union/structs
904 // we want to start the definition in case the class is needed as
905 // the
906 // declaration context for a contained class or type without the
907 // need
908 // to complete that type..
909
910 if (class_language != eLanguageTypeObjC &&
911 class_language != eLanguageTypeObjC_plus_plus)
912 ClangASTContext::StartTagDeclarationDefinition(clang_type);
913
914 // Leave this as a forward declaration until we need
915 // to know the details of the type. lldb_private::Type
916 // will automatically call the SymbolFile virtual function
917 // "SymbolFileDWARF::CompleteType(Type *)"
918 // When the definition needs to be defined.
919 assert(!dwarf->GetForwardDeclClangTypeToDie().count((static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie
().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType
()) && "Type already in the forward declaration map!"
) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\""
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 922, __extension__ __PRETTY_FUNCTION__))
920 ClangUtil::RemoveFastQualifiers(clang_type)(static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie
().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType
()) && "Type already in the forward declaration map!"
) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\""
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 922, __extension__ __PRETTY_FUNCTION__))
921 .GetOpaqueQualType()) &&(static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie
().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType
()) && "Type already in the forward declaration map!"
) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\""
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 922, __extension__ __PRETTY_FUNCTION__))
922 "Type already in the forward declaration map!")(static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie
().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType
()) && "Type already in the forward declaration map!"
) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\""
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 922, __extension__ __PRETTY_FUNCTION__))
;
923 // Can't assume m_ast.GetSymbolFile() is actually a SymbolFileDWARF,
924 // it can be a
925 // SymbolFileDWARFDebugMap for Apple binaries.
926 dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] =
927 clang_type.GetOpaqueQualType();
928 dwarf->GetForwardDeclClangTypeToDie()
929 [ClangUtil::RemoveFastQualifiers(clang_type)
930 .GetOpaqueQualType()] = die.GetDIERef();
931 m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true);
932 }
933 }
934 } break;
935
936 case DW_TAG_enumeration_type: {
937 // Set a bit that lets us know that we are currently parsing this
938 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
939
940 bool is_scoped = false;
941 DWARFFormValue encoding_form;
942
943 const size_t num_attributes = die.GetAttributes(attributes);
944 if (num_attributes > 0) {
945 uint32_t i;
946
947 for (i = 0; i < num_attributes; ++i) {
948 attr = attributes.AttributeAtIndex(i);
949 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
950 switch (attr) {
951 case DW_AT_decl_file:
952 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
953 form_value.Unsigned()));
954 break;
955 case DW_AT_decl_line:
956 decl.SetLine(form_value.Unsigned());
957 break;
958 case DW_AT_decl_column:
959 decl.SetColumn(form_value.Unsigned());
960 break;
961 case DW_AT_name:
962 type_name_cstr = form_value.AsCString();
963 type_name_const_str.SetCString(type_name_cstr);
964 break;
965 case DW_AT_type:
966 encoding_form = form_value;
967 break;
968 case DW_AT_byte_size:
969 byte_size = form_value.Unsigned();
970 break;
971 case DW_AT_accessibility:
972 break; // accessibility =
973 // DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
974 case DW_AT_declaration:
975 is_forward_declaration = form_value.Boolean();
976 break;
977 case DW_AT_enum_class:
978 is_scoped = form_value.Boolean();
979 break;
980 case DW_AT_allocated:
981 case DW_AT_associated:
982 case DW_AT_bit_stride:
983 case DW_AT_byte_stride:
984 case DW_AT_data_location:
985 case DW_AT_description:
986 case DW_AT_start_scope:
987 case DW_AT_visibility:
988 case DW_AT_specification:
989 case DW_AT_abstract_origin:
990 case DW_AT_sibling:
991 break;
992 }
993 }
994 }
995
996 if (is_forward_declaration) {
997 type_sp = ParseTypeFromDWO(die, log);
998 if (type_sp)
999 return type_sp;
1000
1001 DWARFDeclContext die_decl_ctx;
1002 die.GetDWARFDeclContext(die_decl_ctx);
1003
1004 type_sp =
1005 dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
1006
1007 if (!type_sp) {
1008 SymbolFileDWARFDebugMap *debug_map_symfile =
1009 dwarf->GetDebugMapSymfile();
1010 if (debug_map_symfile) {
1011 // We weren't able to find a full declaration in
1012 // this DWARF, see if we have a declaration anywhere
1013 // else...
1014 type_sp =
1015 debug_map_symfile->FindDefinitionTypeForDWARFDeclContext(
1016 die_decl_ctx);
1017 }
1018 }
1019
1020 if (type_sp) {
1021 if (log) {
1022 dwarf->GetObjectFile()->GetModule()->LogMessage(
1023 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
1024 "forward declaration, complete type is 0x%8.8" PRIx64"l" "x",
1025 static_cast<void *>(this), die.GetOffset(),
1026 DW_TAG_value_to_name(tag), type_name_cstr,
1027 type_sp->GetID());
1028 }
1029
1030 // We found a real definition for this type elsewhere
1031 // so lets use it and cache the fact that we found
1032 // a complete type for this die
1033 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1034 clang::DeclContext *defn_decl_ctx =
1035 GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE(
1036 DIERef(type_sp->GetID(), dwarf)));
1037 if (defn_decl_ctx)
1038 LinkDeclContextToDIE(defn_decl_ctx, die);
1039 return type_sp;
1040 }
1041 }
1042 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1043 DW_TAG_value_to_name(tag), type_name_cstr);
1044
1045 CompilerType enumerator_clang_type;
1046 clang_type.SetCompilerType(
1047 &m_ast,
1048 dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE()));
1049 if (!clang_type) {
1050 if (encoding_form.IsValid()) {
1051 Type *enumerator_type =
1052 dwarf->ResolveTypeUID(DIERef(encoding_form));
1053 if (enumerator_type)
1054 enumerator_clang_type = enumerator_type->GetFullCompilerType();
1055 }
1056
1057 if (!enumerator_clang_type) {
1058 if (byte_size > 0) {
1059 enumerator_clang_type =
1060 m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize(
1061 NULL__null, DW_ATE_signed, byte_size * 8);
1062 } else {
1063 enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt);
1064 }
1065 }
1066
1067 clang_type = m_ast.CreateEnumerationType(
1068 type_name_cstr, GetClangDeclContextContainingDIE(die, nullptr),
1069 decl, enumerator_clang_type, is_scoped);
1070 } else {
1071 enumerator_clang_type =
1072 m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType());
1073 }
1074
1075 LinkDeclContextToDIE(
1076 ClangASTContext::GetDeclContextForType(clang_type), die);
1077
1078 type_sp.reset(new Type(
1079 die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null,
1080 DIERef(encoding_form).GetUID(dwarf), Type::eEncodingIsUID, &decl,
1081 clang_type, Type::eResolveStateForward));
1082
1083 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) {
1084 if (die.HasChildren()) {
1085 SymbolContext cu_sc(die.GetLLDBCompileUnit());
1086 bool is_signed = false;
1087 enumerator_clang_type.IsIntegerType(is_signed);
1088 ParseChildEnumerators(cu_sc, clang_type, is_signed,
1089 type_sp->GetByteSize(), die);
1090 }
1091 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
1092 } else {
1093 dwarf->GetObjectFile()->GetModule()->ReportError(
1094 "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
1095 "definition.\nPlease file a bug and attach the file at the "
1096 "start of this error message",
1097 die.GetOffset(), type_name_cstr);
1098 }
1099 }
1100 } break;
1101
1102 case DW_TAG_inlined_subroutine:
1103 case DW_TAG_subprogram:
1104 case DW_TAG_subroutine_type: {
1105 // Set a bit that lets us know that we are currently parsing this
1106 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
1107
1108 DWARFFormValue type_die_form;
1109 bool is_variadic = false;
1110 bool is_inline = false;
1111 bool is_static = false;
1112 bool is_virtual = false;
1113 bool is_explicit = false;
1114 bool is_artificial = false;
1115 bool has_template_params = false;
1116 DWARFFormValue specification_die_form;
1117 DWARFFormValue abstract_origin_die_form;
1118 dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
1119
1120 unsigned type_quals = 0;
1121 clang::StorageClass storage =
1122 clang::SC_None; //, Extern, Static, PrivateExtern
1123
1124 const size_t num_attributes = die.GetAttributes(attributes);
1125 if (num_attributes > 0) {
1126 uint32_t i;
1127 for (i = 0; i < num_attributes; ++i) {
1128 attr = attributes.AttributeAtIndex(i);
1129 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1130 switch (attr) {
1131 case DW_AT_decl_file:
1132 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
1133 form_value.Unsigned()));
1134 break;
1135 case DW_AT_decl_line:
1136 decl.SetLine(form_value.Unsigned());
1137 break;
1138 case DW_AT_decl_column:
1139 decl.SetColumn(form_value.Unsigned());
1140 break;
1141 case DW_AT_name:
1142 type_name_cstr = form_value.AsCString();
1143 type_name_const_str.SetCString(type_name_cstr);
1144 break;
1145
1146 case DW_AT_linkage_name:
1147 case DW_AT_MIPS_linkage_name:
1148 break; // mangled =
1149 // form_value.AsCString(&dwarf->get_debug_str_data());
1150 // break;
1151 case DW_AT_type:
1152 type_die_form = form_value;
1153 break;
1154 case DW_AT_accessibility:
1155 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
1156 break;
1157 case DW_AT_declaration:
1158 break; // is_forward_declaration = form_value.Boolean(); break;
1159 case DW_AT_inline:
1160 is_inline = form_value.Boolean();
1161 break;
1162 case DW_AT_virtuality:
1163 is_virtual = form_value.Boolean();
1164 break;
1165 case DW_AT_explicit:
1166 is_explicit = form_value.Boolean();
1167 break;
1168 case DW_AT_artificial:
1169 is_artificial = form_value.Boolean();
1170 break;
1171
1172 case DW_AT_external:
1173 if (form_value.Unsigned()) {
1174 if (storage == clang::SC_None)
1175 storage = clang::SC_Extern;
1176 else
1177 storage = clang::SC_PrivateExtern;
1178 }
1179 break;
1180
1181 case DW_AT_specification:
1182 specification_die_form = form_value;
1183 break;
1184
1185 case DW_AT_abstract_origin:
1186 abstract_origin_die_form = form_value;
1187 break;
1188
1189 case DW_AT_object_pointer:
1190 object_pointer_die_offset = form_value.Reference();
1191 break;
1192
1193 case DW_AT_allocated:
1194 case DW_AT_associated:
1195 case DW_AT_address_class:
1196 case DW_AT_calling_convention:
1197 case DW_AT_data_location:
1198 case DW_AT_elemental:
1199 case DW_AT_entry_pc:
1200 case DW_AT_frame_base:
1201 case DW_AT_high_pc:
1202 case DW_AT_low_pc:
1203 case DW_AT_prototyped:
1204 case DW_AT_pure:
1205 case DW_AT_ranges:
1206 case DW_AT_recursive:
1207 case DW_AT_return_addr:
1208 case DW_AT_segment:
1209 case DW_AT_start_scope:
1210 case DW_AT_static_link:
1211 case DW_AT_trampoline:
1212 case DW_AT_visibility:
1213 case DW_AT_vtable_elem_location:
1214 case DW_AT_description:
1215 case DW_AT_sibling:
1216 break;
1217 }
1218 }
1219 }
1220 }
1221
1222 std::string object_pointer_name;
1223 if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) {
1224 DWARFDIE object_pointer_die = die.GetDIE(object_pointer_die_offset);
1225 if (object_pointer_die) {
1226 const char *object_pointer_name_cstr = object_pointer_die.GetName();
1227 if (object_pointer_name_cstr)
1228 object_pointer_name = object_pointer_name_cstr;
1229 }
1230 }
1231
1232 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1233 DW_TAG_value_to_name(tag), type_name_cstr);
1234
1235 CompilerType return_clang_type;
1236 Type *func_type = NULL__null;
1237
1238 if (type_die_form.IsValid())
1239 func_type = dwarf->ResolveTypeUID(DIERef(type_die_form));
1240
1241 if (func_type)
1242 return_clang_type = func_type->GetForwardCompilerType();
1243 else
1244 return_clang_type = m_ast.GetBasicType(eBasicTypeVoid);
1245
1246 std::vector<CompilerType> function_param_types;
1247 std::vector<clang::ParmVarDecl *> function_param_decls;
1248
1249 // Parse the function children for the parameters
1250
1251 DWARFDIE decl_ctx_die;
1252 clang::DeclContext *containing_decl_ctx =
1253 GetClangDeclContextContainingDIE(die, &decl_ctx_die);
1254 const clang::Decl::Kind containing_decl_kind =
1255 containing_decl_ctx->getDeclKind();
1256
1257 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind);
1258 // Start off static. This will be set to false in
1259 // ParseChildParameters(...)
1260 // if we find a "this" parameters as the first parameter
1261 if (is_cxx_method) {
1262 is_static = true;
1263 }
1264
1265 if (die.HasChildren()) {
1266 bool skip_artificial = true;
1267 ParseChildParameters(sc, containing_decl_ctx, die, skip_artificial,
1268 is_static, is_variadic, has_template_params,
1269 function_param_types, function_param_decls,
1270 type_quals);
1271 }
1272
1273 bool ignore_containing_context = false;
1274 // Check for templatized class member functions. If we had any
1275 // DW_TAG_template_type_parameter
1276 // or DW_TAG_template_value_parameter the DW_TAG_subprogram DIE, then we
1277 // can't let this become
1278 // a method in a class. Why? Because templatized functions are only
1279 // emitted if one of the
1280 // templatized methods is used in the current compile unit and we will
1281 // end up with classes
1282 // that may or may not include these member functions and this means one
1283 // class won't match another
1284 // class definition and it affects our ability to use a class in the
1285 // clang expression parser. So
1286 // for the greater good, we currently must not allow any template member
1287 // functions in a class definition.
1288 if (is_cxx_method && has_template_params) {
1289 ignore_containing_context = true;
1290 is_cxx_method = false;
1291 }
1292
1293 // clang_type will get the function prototype clang type after this call
1294 clang_type = m_ast.CreateFunctionType(
1295 return_clang_type, function_param_types.data(),
1296 function_param_types.size(), is_variadic, type_quals);
1297
1298 if (type_name_cstr) {
1299 bool type_handled = false;
1300 if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) {
1301 ObjCLanguage::MethodName objc_method(type_name_cstr, true);
1302 if (objc_method.IsValid(true)) {
1303 CompilerType class_opaque_type;
1304 ConstString class_name(objc_method.GetClassName());
1305 if (class_name) {
1306 TypeSP complete_objc_class_type_sp(
1307 dwarf->FindCompleteObjCDefinitionTypeForDIE(
1308 DWARFDIE(), class_name, false));
1309
1310 if (complete_objc_class_type_sp) {
1311 CompilerType type_clang_forward_type =
1312 complete_objc_class_type_sp->GetForwardCompilerType();
1313 if (ClangASTContext::IsObjCObjectOrInterfaceType(
1314 type_clang_forward_type))
1315 class_opaque_type = type_clang_forward_type;
1316 }
1317 }
1318
1319 if (class_opaque_type) {
1320 // If accessibility isn't set to anything valid, assume public
1321 // for
1322 // now...
1323 if (accessibility == eAccessNone)
1324 accessibility = eAccessPublic;
1325
1326 clang::ObjCMethodDecl *objc_method_decl =
1327 m_ast.AddMethodToObjCObjectType(
1328 class_opaque_type, type_name_cstr, clang_type,
1329 accessibility, is_artificial, is_variadic);
1330 type_handled = objc_method_decl != NULL__null;
1331 if (type_handled) {
1332 LinkDeclContextToDIE(
1333 ClangASTContext::GetAsDeclContext(objc_method_decl), die);
1334 m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID());
1335 } else {
1336 dwarf->GetObjectFile()->GetModule()->ReportError(
1337 "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), "
1338 "please file a bug and attach the file at the start of "
1339 "this error message",
1340 die.GetOffset(), tag, DW_TAG_value_to_name(tag));
1341 }
1342 }
1343 } else if (is_cxx_method) {
1344 // Look at the parent of this DIE and see if is is
1345 // a class or struct and see if this is actually a
1346 // C++ method
1347 Type *class_type = dwarf->ResolveType(decl_ctx_die);
1348 if (class_type) {
1349 bool alternate_defn = false;
1350 if (class_type->GetID() != decl_ctx_die.GetID() ||
1351 decl_ctx_die.GetContainingDWOModuleDIE()) {
1352 alternate_defn = true;
1353
1354 // We uniqued the parent class of this function to another
1355 // class
1356 // so we now need to associate all dies under "decl_ctx_die"
1357 // to
1358 // DIEs in the DIE for "class_type"...
1359 SymbolFileDWARF *class_symfile = NULL__null;
1360 DWARFDIE class_type_die;
1361
1362 SymbolFileDWARFDebugMap *debug_map_symfile =
1363 dwarf->GetDebugMapSymfile();
1364 if (debug_map_symfile) {
1365 class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(
1366 SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(
1367 class_type->GetID()));
1368 class_type_die = class_symfile->DebugInfo()->GetDIE(
1369 DIERef(class_type->GetID(), dwarf));
1370 } else {
1371 class_symfile = dwarf;
Value stored to 'class_symfile' is never read
1372 class_type_die = dwarf->DebugInfo()->GetDIE(
1373 DIERef(class_type->GetID(), dwarf));
1374 }
1375 if (class_type_die) {
1376 DWARFDIECollection failures;
1377
1378 CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die,
1379 class_type, failures);
1380
1381 // FIXME do something with these failures that's smarter
1382 // than
1383 // just dropping them on the ground. Unfortunately classes
1384 // don't
1385 // like having stuff added to them after their definitions
1386 // are
1387 // complete...
1388
1389 type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1390 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) {
1391 type_sp = type_ptr->shared_from_this();
1392 break;
1393 }
1394 }
1395 }
1396
1397 if (specification_die_form.IsValid()) {
1398 // We have a specification which we are going to base our
1399 // function
1400 // prototype off of, so we need this type to be completed so
1401 // that the
1402 // m_die_to_decl_ctx for the method in the specification has a
1403 // valid
1404 // clang decl context.
1405 class_type->GetForwardCompilerType();
1406 // If we have a specification, then the function type should
1407 // have been
1408 // made with the specification and not with this die.
1409 DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE(
1410 DIERef(specification_die_form));
1411 clang::DeclContext *spec_clang_decl_ctx =
1412 GetClangDeclContextForDIE(spec_die);
1413 if (spec_clang_decl_ctx) {
1414 LinkDeclContextToDIE(spec_clang_decl_ctx, die);
1415 } else {
1416 dwarf->GetObjectFile()->GetModule()->ReportWarning(
1417 "0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8" PRIx64"l" "x"
1418 ") has no decl\n",
1419 die.GetID(), specification_die_form.Reference());
1420 }
1421 type_handled = true;
1422 } else if (abstract_origin_die_form.IsValid()) {
1423 // We have a specification which we are going to base our
1424 // function
1425 // prototype off of, so we need this type to be completed so
1426 // that the
1427 // m_die_to_decl_ctx for the method in the abstract origin has
1428 // a valid
1429 // clang decl context.
1430 class_type->GetForwardCompilerType();
1431
1432 DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE(
1433 DIERef(abstract_origin_die_form));
1434 clang::DeclContext *abs_clang_decl_ctx =
1435 GetClangDeclContextForDIE(abs_die);
1436 if (abs_clang_decl_ctx) {
1437 LinkDeclContextToDIE(abs_clang_decl_ctx, die);
1438 } else {
1439 dwarf->GetObjectFile()->GetModule()->ReportWarning(
1440 "0x%8.8" PRIx64"l" "x" ": DW_AT_abstract_origin(0x%8.8" PRIx64"l" "x"
1441 ") has no decl\n",
1442 die.GetID(), abstract_origin_die_form.Reference());
1443 }
1444 type_handled = true;
1445 } else {
1446 CompilerType class_opaque_type =
1447 class_type->GetForwardCompilerType();
1448 if (ClangASTContext::IsCXXClassType(class_opaque_type)) {
1449 if (class_opaque_type.IsBeingDefined() || alternate_defn) {
1450 if (!is_static && !die.HasChildren()) {
1451 // We have a C++ member function with no children (this
1452 // pointer!)
1453 // and clang will get mad if we try and make a function
1454 // that isn't
1455 // well formed in the DWARF, so we will just skip it...
1456 type_handled = true;
1457 } else {
1458 bool add_method = true;
1459 if (alternate_defn) {
1460 // If an alternate definition for the class exists,
1461 // then add the method only if an
1462 // equivalent is not already present.
1463 clang::CXXRecordDecl *record_decl =
1464 m_ast.GetAsCXXRecordDecl(
1465 class_opaque_type.GetOpaqueQualType());
1466 if (record_decl) {
1467 for (auto method_iter = record_decl->method_begin();
1468 method_iter != record_decl->method_end();
1469 method_iter++) {
1470 clang::CXXMethodDecl *method_decl = *method_iter;
1471 if (method_decl->getNameInfo().getAsString() ==
1472 std::string(type_name_cstr)) {
1473 if (method_decl->getType() ==
1474 ClangUtil::GetQualType(clang_type)) {
1475 add_method = false;
1476 LinkDeclContextToDIE(
1477 ClangASTContext::GetAsDeclContext(
1478 method_decl),
1479 die);
1480 type_handled = true;
1481
1482 break;
1483 }
1484 }
1485 }
1486 }
1487 }
1488
1489 if (add_method) {
1490 llvm::PrettyStackTraceFormat stack_trace(
1491 "SymbolFileDWARF::ParseType() is adding a method "
1492 "%s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s",
1493 type_name_cstr,
1494 class_type->GetName().GetCString(), die.GetID(),
1495 dwarf->GetObjectFile()
1496 ->GetFileSpec()
1497 .GetPath()
1498 .c_str());
1499
1500 const bool is_attr_used = false;
1501 // Neither GCC 4.2 nor clang++ currently set a valid
1502 // accessibility
1503 // in the DWARF for C++ methods... Default to public
1504 // for now...
1505 if (accessibility == eAccessNone)
1506 accessibility = eAccessPublic;
1507
1508 clang::CXXMethodDecl *cxx_method_decl =
1509 m_ast.AddMethodToCXXRecordType(
1510 class_opaque_type.GetOpaqueQualType(),
1511 type_name_cstr, clang_type, accessibility,
1512 is_virtual, is_static, is_inline, is_explicit,
1513 is_attr_used, is_artificial);
1514
1515 type_handled = cxx_method_decl != NULL__null;
1516
1517 if (type_handled) {
1518 LinkDeclContextToDIE(
1519 ClangASTContext::GetAsDeclContext(
1520 cxx_method_decl),
1521 die);
1522
1523 ClangASTMetadata metadata;
1524 metadata.SetUserID(die.GetID());
1525
1526 if (!object_pointer_name.empty()) {
1527 metadata.SetObjectPtrName(
1528 object_pointer_name.c_str());
1529 if (log)
1530 log->Printf(
1531 "Setting object pointer name: %s on method "
1532 "object %p.\n",
1533 object_pointer_name.c_str(),
1534 static_cast<void *>(cxx_method_decl));
1535 }
1536 m_ast.SetMetadata(cxx_method_decl, metadata);
1537 } else {
1538 ignore_containing_context = true;
1539 }
1540 }
1541 }
1542 } else {
1543 // We were asked to parse the type for a method in a
1544 // class, yet the
1545 // class hasn't been asked to complete itself through the
1546 // clang::ExternalASTSource protocol, so we need to just
1547 // have the
1548 // class complete itself and do things the right way, then
1549 // our
1550 // DIE should then have an entry in the
1551 // dwarf->GetDIEToType() map. First
1552 // we need to modify the dwarf->GetDIEToType() so it
1553 // doesn't think we are
1554 // trying to parse this DIE anymore...
1555 dwarf->GetDIEToType()[die.GetDIE()] = NULL__null;
1556
1557 // Now we get the full type to force our class type to
1558 // complete itself
1559 // using the clang::ExternalASTSource protocol which will
1560 // parse all
1561 // base classes and all methods (including the method for
1562 // this DIE).
1563 class_type->GetFullCompilerType();
1564
1565 // The type for this DIE should have been filled in the
1566 // function call above
1567 type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1568 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) {
1569 type_sp = type_ptr->shared_from_this();
1570 break;
1571 }
1572
1573 // FIXME This is fixing some even uglier behavior but we
1574 // really need to
1575 // uniq the methods of each class as well as the class
1576 // itself.
1577 // <rdar://problem/11240464>
1578 type_handled = true;
1579 }
1580 }
1581 }
1582 }
1583 }
1584 }
1585
1586 if (!type_handled) {
1587 clang::FunctionDecl *function_decl = nullptr;
1588
1589 if (abstract_origin_die_form.IsValid()) {
1590 DWARFDIE abs_die =
1591 dwarf->DebugInfo()->GetDIE(DIERef(abstract_origin_die_form));
1592
1593 SymbolContext sc;
1594
1595 if (dwarf->ResolveType(abs_die)) {
1596 function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(
1597 GetCachedClangDeclContextForDIE(abs_die));
1598
1599 if (function_decl) {
1600 LinkDeclContextToDIE(function_decl, die);
1601 }
1602 }
1603 }
1604
1605 if (!function_decl) {
1606 // We just have a function that isn't part of a class
1607 function_decl = m_ast.CreateFunctionDeclaration(
1608 ignore_containing_context ? m_ast.GetTranslationUnitDecl()
1609 : containing_decl_ctx,
1610 type_name_cstr, clang_type, storage, is_inline);
1611
1612 if (has_template_params) {
1613 ClangASTContext::TemplateParameterInfos template_param_infos;
1614 ParseTemplateParameterInfos(die, template_param_infos);
1615 clang::FunctionTemplateDecl *func_template_decl =
1616 m_ast.CreateFunctionTemplateDecl(
1617 containing_decl_ctx, function_decl, type_name_cstr,
1618 template_param_infos);
1619 m_ast.CreateFunctionTemplateSpecializationInfo(
1620 function_decl, func_template_decl, template_param_infos);
1621 }
1622
1623 lldbassert(function_decl)lldb_private::lldb_assert(function_decl, "function_decl", __FUNCTION__
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 1623)
;
1624
1625 if (function_decl) {
1626 LinkDeclContextToDIE(function_decl, die);
1627
1628 if (!function_param_decls.empty())
1629 m_ast.SetFunctionParameters(function_decl,
1630 &function_param_decls.front(),
1631 function_param_decls.size());
1632
1633 ClangASTMetadata metadata;
1634 metadata.SetUserID(die.GetID());
1635
1636 if (!object_pointer_name.empty()) {
1637 metadata.SetObjectPtrName(object_pointer_name.c_str());
1638 if (log)
1639 log->Printf("Setting object pointer name: %s on function "
1640 "object %p.",
1641 object_pointer_name.c_str(),
1642 static_cast<void *>(function_decl));
1643 }
1644 m_ast.SetMetadata(function_decl, metadata);
1645 }
1646 }
1647 }
1648 }
1649 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 0, NULL__null,
1650 LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingIsUID, &decl,
1651 clang_type, Type::eResolveStateFull));
1652 assert(type_sp.get())(static_cast <bool> (type_sp.get()) ? void (0) : __assert_fail
("type_sp.get()", "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 1652, __extension__ __PRETTY_FUNCTION__))
;
1653 } break;
1654
1655 case DW_TAG_array_type: {
1656 // Set a bit that lets us know that we are currently parsing this
1657 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
1658
1659 DWARFFormValue type_die_form;
1660 int64_t first_index = 0;
1661 uint32_t byte_stride = 0;
1662 uint32_t bit_stride = 0;
1663 bool is_vector = false;
1664 const size_t num_attributes = die.GetAttributes(attributes);
1665
1666 if (num_attributes > 0) {
1667 uint32_t i;
1668 for (i = 0; i < num_attributes; ++i) {
1669 attr = attributes.AttributeAtIndex(i);
1670 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1671 switch (attr) {
1672 case DW_AT_decl_file:
1673 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
1674 form_value.Unsigned()));
1675 break;
1676 case DW_AT_decl_line:
1677 decl.SetLine(form_value.Unsigned());
1678 break;
1679 case DW_AT_decl_column:
1680 decl.SetColumn(form_value.Unsigned());
1681 break;
1682 case DW_AT_name:
1683 type_name_cstr = form_value.AsCString();
1684 type_name_const_str.SetCString(type_name_cstr);
1685 break;
1686
1687 case DW_AT_type:
1688 type_die_form = form_value;
1689 break;
1690 case DW_AT_byte_size:
1691 break; // byte_size = form_value.Unsigned(); break;
1692 case DW_AT_byte_stride:
1693 byte_stride = form_value.Unsigned();
1694 break;
1695 case DW_AT_bit_stride:
1696 bit_stride = form_value.Unsigned();
1697 break;
1698 case DW_AT_GNU_vector:
1699 is_vector = form_value.Boolean();
1700 break;
1701 case DW_AT_accessibility:
1702 break; // accessibility =
1703 // DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
1704 case DW_AT_declaration:
1705 break; // is_forward_declaration = form_value.Boolean(); break;
1706 case DW_AT_allocated:
1707 case DW_AT_associated:
1708 case DW_AT_data_location:
1709 case DW_AT_description:
1710 case DW_AT_ordering:
1711 case DW_AT_start_scope:
1712 case DW_AT_visibility:
1713 case DW_AT_specification:
1714 case DW_AT_abstract_origin:
1715 case DW_AT_sibling:
1716 break;
1717 }
1718 }
1719 }
1720
1721 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1722 DW_TAG_value_to_name(tag), type_name_cstr);
1723
1724 DIERef type_die_ref(type_die_form);
1725 Type *element_type = dwarf->ResolveTypeUID(type_die_ref);
1726
1727 if (element_type) {
1728 std::vector<uint64_t> element_orders;
1729 ParseChildArrayInfo(sc, die, first_index, element_orders,
1730 byte_stride, bit_stride);
1731 if (byte_stride == 0 && bit_stride == 0)
1732 byte_stride = element_type->GetByteSize();
1733 CompilerType array_element_type =
1734 element_type->GetForwardCompilerType();
1735
1736 if (ClangASTContext::IsCXXClassType(array_element_type) &&
1737 array_element_type.GetCompleteType() == false) {
1738 ModuleSP module_sp = die.GetModule();
1739 if (module_sp) {
1740 if (die.GetCU()->GetProducer() ==
1741 DWARFCompileUnit::eProducerClang)
1742 module_sp->ReportError(
1743 "DWARF DW_TAG_array_type DIE at 0x%8.8x has a "
1744 "class/union/struct element type DIE 0x%8.8x that is a "
1745 "forward declaration, not a complete definition.\nTry "
1746 "compiling the source file with -fstandalone-debug or "
1747 "disable -gmodules",
1748 die.GetOffset(), type_die_ref.die_offset);
1749 else
1750 module_sp->ReportError(
1751 "DWARF DW_TAG_array_type DIE at 0x%8.8x has a "
1752 "class/union/struct element type DIE 0x%8.8x that is a "
1753 "forward declaration, not a complete definition.\nPlease "
1754 "file a bug against the compiler and include the "
1755 "preprocessed output for %s",
1756 die.GetOffset(), type_die_ref.die_offset,
1757 die.GetLLDBCompileUnit()
1758 ? die.GetLLDBCompileUnit()->GetPath().c_str()
1759 : "the source file");
1760 }
1761
1762 // We have no choice other than to pretend that the element class
1763 // type
1764 // is complete. If we don't do this, clang will crash when trying
1765 // to layout the class. Since we provide layout assistance, all
1766 // ivars in this class and other classes will be fine, this is
1767 // the best we can do short of crashing.
1768 if (ClangASTContext::StartTagDeclarationDefinition(
1769 array_element_type)) {
1770 ClangASTContext::CompleteTagDeclarationDefinition(
1771 array_element_type);
1772 } else {
1773 module_sp->ReportError("DWARF DIE at 0x%8.8x was not able to "
1774 "start its definition.\nPlease file a "
1775 "bug and attach the file at the start "
1776 "of this error message",
1777 type_die_ref.die_offset);
1778 }
1779 }
1780
1781 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
1782 if (element_orders.size() > 0) {
1783 uint64_t num_elements = 0;
1784 std::vector<uint64_t>::const_reverse_iterator pos;
1785 std::vector<uint64_t>::const_reverse_iterator end =
1786 element_orders.rend();
1787 for (pos = element_orders.rbegin(); pos != end; ++pos) {
1788 num_elements = *pos;
1789 clang_type = m_ast.CreateArrayType(array_element_type,
1790 num_elements, is_vector);
1791 array_element_type = clang_type;
1792 array_element_bit_stride =
1793 num_elements ? array_element_bit_stride * num_elements
1794 : array_element_bit_stride;
1795 }
1796 } else {
1797 clang_type =
1798 m_ast.CreateArrayType(array_element_type, 0, is_vector);
1799 }
1800 ConstString empty_name;
1801 type_sp.reset(new Type(
1802 die.GetID(), dwarf, empty_name, array_element_bit_stride / 8,
1803 NULL__null, DIERef(type_die_form).GetUID(dwarf), Type::eEncodingIsUID,
1804 &decl, clang_type, Type::eResolveStateFull));
1805 type_sp->SetEncodingType(element_type);
1806 }
1807 }
1808 } break;
1809
1810 case DW_TAG_ptr_to_member_type: {
1811 DWARFFormValue type_die_form;
1812 DWARFFormValue containing_type_die_form;
1813
1814 const size_t num_attributes = die.GetAttributes(attributes);
1815
1816 if (num_attributes > 0) {
1817 uint32_t i;
1818 for (i = 0; i < num_attributes; ++i) {
1819 attr = attributes.AttributeAtIndex(i);
1820 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1821 switch (attr) {
1822 case DW_AT_type:
1823 type_die_form = form_value;
1824 break;
1825 case DW_AT_containing_type:
1826 containing_type_die_form = form_value;
1827 break;
1828 }
1829 }
1830 }
1831
1832 Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form));
1833 Type *class_type =
1834 dwarf->ResolveTypeUID(DIERef(containing_type_die_form));
1835
1836 CompilerType pointee_clang_type =
1837 pointee_type->GetForwardCompilerType();
1838 CompilerType class_clang_type = class_type->GetLayoutCompilerType();
1839
1840 clang_type = ClangASTContext::CreateMemberPointerType(
1841 class_clang_type, pointee_clang_type);
1842
1843 byte_size = clang_type.GetByteSize(nullptr);
1844
1845 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str,
1846 byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL),
1847 Type::eEncodingIsUID, NULL__null, clang_type,
1848 Type::eResolveStateForward));
1849 }
1850
1851 break;
1852 }
1853 default:
1854 dwarf->GetObjectFile()->GetModule()->ReportError(
1855 "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and "
1856 "attach the file at the start of this error message",
1857 die.GetOffset(), tag, DW_TAG_value_to_name(tag));
1858 break;
1859 }
1860
1861 if (type_sp.get()) {
1862 DWARFDIE sc_parent_die =
1863 SymbolFileDWARF::GetParentSymbolContextDIE(die);
1864 dw_tag_t sc_parent_tag = sc_parent_die.Tag();
1865
1866 SymbolContextScope *symbol_context_scope = NULL__null;
1867 if (sc_parent_tag == DW_TAG_compile_unit) {
1868 symbol_context_scope = sc.comp_unit;
1869 } else if (sc.function != NULL__null && sc_parent_die) {
1870 symbol_context_scope =
1871 sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID());
1872 if (symbol_context_scope == NULL__null)
1873 symbol_context_scope = sc.function;
1874 }
1875
1876 if (symbol_context_scope != NULL__null) {
1877 type_sp->SetSymbolContextScope(symbol_context_scope);
1878 }
1879
1880 // We are ready to put this type into the uniqued list up at the module
1881 // level
1882 type_list->Insert(type_sp);
1883
1884 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1885 }
1886 } else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) {
1887 type_sp = type_ptr->shared_from_this();
1888 }
1889 }
1890 return type_sp;
1891}
1892
1893// DWARF parsing functions
1894
1895class DWARFASTParserClang::DelayedAddObjCClassProperty {
1896public:
1897 DelayedAddObjCClassProperty(
1898 const CompilerType &class_opaque_type, const char *property_name,
1899 const CompilerType &property_opaque_type, // The property type is only
1900 // required if you don't have an
1901 // ivar decl
1902 clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name,
1903 const char *property_getter_name, uint32_t property_attributes,
1904 const ClangASTMetadata *metadata)
1905 : m_class_opaque_type(class_opaque_type), m_property_name(property_name),
1906 m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl),
1907 m_property_setter_name(property_setter_name),
1908 m_property_getter_name(property_getter_name),
1909 m_property_attributes(property_attributes) {
1910 if (metadata != NULL__null) {
1911 m_metadata_ap.reset(new ClangASTMetadata());
1912 *m_metadata_ap = *metadata;
1913 }
1914 }
1915
1916 DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs) {
1917 *this = rhs;
1918 }
1919
1920 DelayedAddObjCClassProperty &
1921 operator=(const DelayedAddObjCClassProperty &rhs) {
1922 m_class_opaque_type = rhs.m_class_opaque_type;
1923 m_property_name = rhs.m_property_name;
1924 m_property_opaque_type = rhs.m_property_opaque_type;
1925 m_ivar_decl = rhs.m_ivar_decl;
1926 m_property_setter_name = rhs.m_property_setter_name;
1927 m_property_getter_name = rhs.m_property_getter_name;
1928 m_property_attributes = rhs.m_property_attributes;
1929
1930 if (rhs.m_metadata_ap.get()) {
1931 m_metadata_ap.reset(new ClangASTMetadata());
1932 *m_metadata_ap = *rhs.m_metadata_ap;
1933 }
1934 return *this;
1935 }
1936
1937 bool Finalize() {
1938 return ClangASTContext::AddObjCClassProperty(
1939 m_class_opaque_type, m_property_name, m_property_opaque_type,
1940 m_ivar_decl, m_property_setter_name, m_property_getter_name,
1941 m_property_attributes, m_metadata_ap.get());
1942 }
1943
1944private:
1945 CompilerType m_class_opaque_type;
1946 const char *m_property_name;
1947 CompilerType m_property_opaque_type;
1948 clang::ObjCIvarDecl *m_ivar_decl;
1949 const char *m_property_setter_name;
1950 const char *m_property_getter_name;
1951 uint32_t m_property_attributes;
1952 std::unique_ptr<ClangASTMetadata> m_metadata_ap;
1953};
1954
1955bool DWARFASTParserClang::ParseTemplateDIE(
1956 const DWARFDIE &die,
1957 ClangASTContext::TemplateParameterInfos &template_param_infos) {
1958 const dw_tag_t tag = die.Tag();
1959
1960 switch (tag) {
1961 case DW_TAG_GNU_template_parameter_pack: {
1962 template_param_infos.packed_args.reset(
1963 new ClangASTContext::TemplateParameterInfos);
1964 for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid();
1965 child_die = child_die.GetSibling()) {
1966 if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args))
1967 return false;
1968 }
1969 if (const char *name = die.GetName()) {
1970 template_param_infos.pack_name = name;
1971 }
1972 return true;
1973 }
1974 case DW_TAG_template_type_parameter:
1975 case DW_TAG_template_value_parameter: {
1976 DWARFAttributes attributes;
1977 const size_t num_attributes = die.GetAttributes(attributes);
1978 const char *name = nullptr;
1979 CompilerType clang_type;
1980 uint64_t uval64 = 0;
1981 bool uval64_valid = false;
1982 if (num_attributes > 0) {
1983 DWARFFormValue form_value;
1984 for (size_t i = 0; i < num_attributes; ++i) {
1985 const dw_attr_t attr = attributes.AttributeAtIndex(i);
1986
1987 switch (attr) {
1988 case DW_AT_name:
1989 if (attributes.ExtractFormValueAtIndex(i, form_value))
1990 name = form_value.AsCString();
1991 break;
1992
1993 case DW_AT_type:
1994 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1995 Type *lldb_type = die.ResolveTypeUID(DIERef(form_value));
1996 if (lldb_type)
1997 clang_type = lldb_type->GetForwardCompilerType();
1998 }
1999 break;
2000
2001 case DW_AT_const_value:
2002 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2003 uval64_valid = true;
2004 uval64 = form_value.Unsigned();
2005 }
2006 break;
2007 default:
2008 break;
2009 }
2010 }
2011
2012 clang::ASTContext *ast = m_ast.getASTContext();
2013 if (!clang_type)
2014 clang_type = m_ast.GetBasicType(eBasicTypeVoid);
2015
2016 if (clang_type) {
2017 bool is_signed = false;
2018 if (name && name[0])
2019 template_param_infos.names.push_back(name);
2020 else
2021 template_param_infos.names.push_back(NULL__null);
2022
2023 // Get the signed value for any integer or enumeration if available
2024 clang_type.IsIntegerOrEnumerationType(is_signed);
2025
2026 if (tag == DW_TAG_template_value_parameter && uval64_valid) {
2027 llvm::APInt apint(clang_type.GetBitSize(nullptr), uval64, is_signed);
2028 template_param_infos.args.push_back(
2029 clang::TemplateArgument(*ast, llvm::APSInt(apint, !is_signed),
2030 ClangUtil::GetQualType(clang_type)));
2031 } else {
2032 template_param_infos.args.push_back(
2033 clang::TemplateArgument(ClangUtil::GetQualType(clang_type)));
2034 }
2035 } else {
2036 return false;
2037 }
2038 }
2039 }
2040 return true;
2041
2042 default:
2043 break;
2044 }
2045 return false;
2046}
2047
2048bool DWARFASTParserClang::ParseTemplateParameterInfos(
2049 const DWARFDIE &parent_die,
2050 ClangASTContext::TemplateParameterInfos &template_param_infos) {
2051
2052 if (!parent_die)
2053 return false;
2054
2055 Args template_parameter_names;
2056 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2057 die = die.GetSibling()) {
2058 const dw_tag_t tag = die.Tag();
2059
2060 switch (tag) {
2061 case DW_TAG_template_type_parameter:
2062 case DW_TAG_template_value_parameter:
2063 case DW_TAG_GNU_template_parameter_pack:
2064 ParseTemplateDIE(die, template_param_infos);
2065 break;
2066
2067 default:
2068 break;
2069 }
2070 }
2071 if (template_param_infos.args.empty())
2072 return false;
2073 return template_param_infos.args.size() == template_param_infos.names.size();
2074}
2075
2076bool DWARFASTParserClang::CompleteTypeFromDWARF(const DWARFDIE &die,
2077 lldb_private::Type *type,
2078 CompilerType &clang_type) {
2079 SymbolFileDWARF *dwarf = die.GetDWARF();
2080
2081 std::lock_guard<std::recursive_mutex> guard(
2082 dwarf->GetObjectFile()->GetModule()->GetMutex());
2083
2084 // Disable external storage for this type so we don't get anymore
2085 // clang::ExternalASTSource queries for this type.
2086 m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false);
2087
2088 if (!die)
2089 return false;
2090
2091#if defined LLDB_CONFIGURATION_DEBUG
2092 //----------------------------------------------------------------------
2093 // For debugging purposes, the LLDB_DWARF_DONT_COMPLETE_TYPENAMES
2094 // environment variable can be set with one or more typenames separated
2095 // by ';' characters. This will cause this function to not complete any
2096 // types whose names match.
2097 //
2098 // Examples of setting this environment variable:
2099 //
2100 // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo
2101 // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo;Bar;Baz
2102 //----------------------------------------------------------------------
2103 const char *dont_complete_typenames_cstr =
2104 getenv("LLDB_DWARF_DONT_COMPLETE_TYPENAMES");
2105 if (dont_complete_typenames_cstr && dont_complete_typenames_cstr[0]) {
2106 const char *die_name = die.GetName();
2107 if (die_name && die_name[0]) {
2108 const char *match = strstr(dont_complete_typenames_cstr, die_name);
2109 if (match) {
2110 size_t die_name_length = strlen(die_name);
2111 while (match) {
2112 const char separator_char = ';';
2113 const char next_char = match[die_name_length];
2114 if (next_char == '\0' || next_char == separator_char) {
2115 if (match == dont_complete_typenames_cstr ||
2116 match[-1] == separator_char)
2117 return false;
2118 }
2119 match = strstr(match + 1, die_name);
2120 }
2121 }
2122 }
2123 }
2124#endif
2125
2126 const dw_tag_t tag = die.Tag();
2127
2128 Log *log =
2129 nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2130 if (log)
2131 dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace(
2132 log, "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...",
2133 die.GetID(), die.GetTagAsCString(), type->GetName().AsCString());
2134 assert(clang_type)(static_cast <bool> (clang_type) ? void (0) : __assert_fail
("clang_type", "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 2134, __extension__ __PRETTY_FUNCTION__))
;
2135 DWARFAttributes attributes;
2136 switch (tag) {
2137 case DW_TAG_structure_type:
2138 case DW_TAG_union_type:
2139 case DW_TAG_class_type: {
2140 ClangASTImporter::LayoutInfo layout_info;
2141
2142 {
2143 if (die.HasChildren()) {
2144 LanguageType class_language = eLanguageTypeUnknown;
2145 if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) {
2146 class_language = eLanguageTypeObjC;
2147 // For objective C we don't start the definition when
2148 // the class is created.
2149 ClangASTContext::StartTagDeclarationDefinition(clang_type);
2150 }
2151
2152 int tag_decl_kind = -1;
2153 AccessType default_accessibility = eAccessNone;
2154 if (tag == DW_TAG_structure_type) {
2155 tag_decl_kind = clang::TTK_Struct;
2156 default_accessibility = eAccessPublic;
2157 } else if (tag == DW_TAG_union_type) {
2158 tag_decl_kind = clang::TTK_Union;
2159 default_accessibility = eAccessPublic;
2160 } else if (tag == DW_TAG_class_type) {
2161 tag_decl_kind = clang::TTK_Class;
2162 default_accessibility = eAccessPrivate;
2163 }
2164
2165 SymbolContext sc(die.GetLLDBCompileUnit());
2166 std::vector<clang::CXXBaseSpecifier *> base_classes;
2167 std::vector<int> member_accessibilities;
2168 bool is_a_class = false;
2169 // Parse members and base classes first
2170 DWARFDIECollection member_function_dies;
2171
2172 DelayedPropertyList delayed_properties;
2173 ParseChildMembers(sc, die, clang_type, class_language, base_classes,
2174 member_accessibilities, member_function_dies,
2175 delayed_properties, default_accessibility, is_a_class,
2176 layout_info);
2177
2178 // Now parse any methods if there were any...
2179 size_t num_functions = member_function_dies.Size();
2180 if (num_functions > 0) {
2181 for (size_t i = 0; i < num_functions; ++i) {
2182 dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i));
2183 }
2184 }
2185
2186 if (class_language == eLanguageTypeObjC) {
2187 ConstString class_name(clang_type.GetTypeName());
2188 if (class_name) {
2189 DIEArray method_die_offsets;
2190 dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets);
2191
2192 if (!method_die_offsets.empty()) {
2193 DWARFDebugInfo *debug_info = dwarf->DebugInfo();
2194
2195 const size_t num_matches = method_die_offsets.size();
2196 for (size_t i = 0; i < num_matches; ++i) {
2197 const DIERef &die_ref = method_die_offsets[i];
2198 DWARFDIE method_die = debug_info->GetDIE(die_ref);
2199
2200 if (method_die)
2201 method_die.ResolveType();
2202 }
2203 }
2204
2205 for (DelayedPropertyList::iterator pi = delayed_properties.begin(),
2206 pe = delayed_properties.end();
2207 pi != pe; ++pi)
2208 pi->Finalize();
2209 }
2210 }
2211
2212 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2213 // need to tell the clang type it is actually a class.
2214 if (class_language != eLanguageTypeObjC) {
2215 if (is_a_class && tag_decl_kind != clang::TTK_Class)
2216 m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type),
2217 clang::TTK_Class);
2218 }
2219
2220 // Since DW_TAG_structure_type gets used for both classes
2221 // and structures, we may need to set any DW_TAG_member
2222 // fields to have a "private" access if none was specified.
2223 // When we parsed the child members we tracked that actual
2224 // accessibility value for each DW_TAG_member in the
2225 // "member_accessibilities" array. If the value for the
2226 // member is zero, then it was set to the "default_accessibility"
2227 // which for structs was "public". Below we correct this
2228 // by setting any fields to "private" that weren't correctly
2229 // set.
2230 if (is_a_class && !member_accessibilities.empty()) {
2231 // This is a class and all members that didn't have
2232 // their access specified are private.
2233 m_ast.SetDefaultAccessForRecordFields(
2234 m_ast.GetAsRecordDecl(clang_type), eAccessPrivate,
2235 &member_accessibilities.front(), member_accessibilities.size());
2236 }
2237
2238 if (!base_classes.empty()) {
2239 // Make sure all base classes refer to complete types and not
2240 // forward declarations. If we don't do this, clang will crash
2241 // with an assertion in the call to
2242 // clang_type.SetBaseClassesForClassType()
2243 for (auto &base_class : base_classes) {
2244 clang::TypeSourceInfo *type_source_info =
2245 base_class->getTypeSourceInfo();
2246 if (type_source_info) {
2247 CompilerType base_class_type(
2248 &m_ast, type_source_info->getType().getAsOpaquePtr());
2249 if (base_class_type.GetCompleteType() == false) {
2250 auto module = dwarf->GetObjectFile()->GetModule();
2251 module->ReportError(":: Class '%s' has a base class '%s' which "
2252 "does not have a complete definition.",
2253 die.GetName(),
2254 base_class_type.GetTypeName().GetCString());
2255 if (die.GetCU()->GetProducer() ==
2256 DWARFCompileUnit::eProducerClang)
2257 module->ReportError(":: Try compiling the source file with "
2258 "-fstandalone-debug.");
2259
2260 // We have no choice other than to pretend that the base class
2261 // is complete. If we don't do this, clang will crash when we
2262 // call setBases() inside of
2263 // "clang_type.SetBaseClassesForClassType()"
2264 // below. Since we provide layout assistance, all ivars in this
2265 // class and other classes will be fine, this is the best we can
2266 // do
2267 // short of crashing.
2268 if (ClangASTContext::StartTagDeclarationDefinition(
2269 base_class_type)) {
2270 ClangASTContext::CompleteTagDeclarationDefinition(
2271 base_class_type);
2272 }
2273 }
2274 }
2275 }
2276 m_ast.SetBaseClassesForClassType(clang_type.GetOpaqueQualType(),
2277 &base_classes.front(),
2278 base_classes.size());
2279
2280 // Clang will copy each CXXBaseSpecifier in "base_classes"
2281 // so we have to free them all.
2282 ClangASTContext::DeleteBaseClassSpecifiers(&base_classes.front(),
2283 base_classes.size());
2284 }
2285 }
2286 }
2287
2288 ClangASTContext::BuildIndirectFields(clang_type);
2289 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
2290
2291 if (!layout_info.field_offsets.empty() ||
2292 !layout_info.base_offsets.empty() ||
2293 !layout_info.vbase_offsets.empty()) {
2294 if (type)
2295 layout_info.bit_size = type->GetByteSize() * 8;
2296 if (layout_info.bit_size == 0)
2297 layout_info.bit_size =
2298 die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8;
2299
2300 clang::CXXRecordDecl *record_decl =
2301 m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType());
2302 if (record_decl) {
2303 if (log) {
2304 ModuleSP module_sp = dwarf->GetObjectFile()->GetModule();
2305
2306 if (module_sp) {
2307 module_sp->LogMessage(
2308 log,
2309 "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) "
2310 "caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u"
2311 ", alignment = %" PRIu64"l" "u"
2312 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])",
2313 static_cast<void *>(clang_type.GetOpaqueQualType()),
2314 static_cast<void *>(record_decl), layout_info.bit_size,
2315 layout_info.alignment,
2316 static_cast<uint32_t>(layout_info.field_offsets.size()),
2317 static_cast<uint32_t>(layout_info.base_offsets.size()),
2318 static_cast<uint32_t>(layout_info.vbase_offsets.size()));
2319
2320 uint32_t idx;
2321 {
2322 llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator
2323 pos,
2324 end = layout_info.field_offsets.end();
2325 for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end;
2326 ++pos, ++idx) {
2327 module_sp->LogMessage(
2328 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = "
2329 "%p) field[%u] = { bit_offset=%u, name='%s' }",
2330 static_cast<void *>(clang_type.GetOpaqueQualType()), idx,
2331 static_cast<uint32_t>(pos->second),
2332 pos->first->getNameAsString().c_str());
2333 }
2334 }
2335
2336 {
2337 llvm::DenseMap<const clang::CXXRecordDecl *,
2338 clang::CharUnits>::const_iterator base_pos,
2339 base_end = layout_info.base_offsets.end();
2340 for (idx = 0, base_pos = layout_info.base_offsets.begin();
2341 base_pos != base_end; ++base_pos, ++idx) {
2342 module_sp->LogMessage(
2343 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = "
2344 "%p) base[%u] = { byte_offset=%u, name='%s' }",
2345 clang_type.GetOpaqueQualType(), idx,
2346 (uint32_t)base_pos->second.getQuantity(),
2347 base_pos->first->getNameAsString().c_str());
2348 }
2349 }
2350 {
2351 llvm::DenseMap<const clang::CXXRecordDecl *,
2352 clang::CharUnits>::const_iterator vbase_pos,
2353 vbase_end = layout_info.vbase_offsets.end();
2354 for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin();
2355 vbase_pos != vbase_end; ++vbase_pos, ++idx) {
2356 module_sp->LogMessage(
2357 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = "
2358 "%p) vbase[%u] = { byte_offset=%u, name='%s' }",
2359 static_cast<void *>(clang_type.GetOpaqueQualType()), idx,
2360 static_cast<uint32_t>(vbase_pos->second.getQuantity()),
2361 vbase_pos->first->getNameAsString().c_str());
2362 }
2363 }
2364 }
2365 }
2366 GetClangASTImporter().InsertRecordDecl(record_decl, layout_info);
2367 }
2368 }
2369 }
2370
2371 return (bool)clang_type;
2372
2373 case DW_TAG_enumeration_type:
2374 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) {
2375 if (die.HasChildren()) {
2376 SymbolContext sc(die.GetLLDBCompileUnit());
2377 bool is_signed = false;
2378 clang_type.IsIntegerType(is_signed);
2379 ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(),
2380 die);
2381 }
2382 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
2383 }
2384 return (bool)clang_type;
2385
2386 default:
2387 assert(false && "not a forward clang type decl!")(static_cast <bool> (false && "not a forward clang type decl!"
) ? void (0) : __assert_fail ("false && \"not a forward clang type decl!\""
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 2387, __extension__ __PRETTY_FUNCTION__))
;
2388 break;
2389 }
2390
2391 return false;
2392}
2393
2394std::vector<DWARFDIE> DWARFASTParserClang::GetDIEForDeclContext(
2395 lldb_private::CompilerDeclContext decl_context) {
2396 std::vector<DWARFDIE> result;
2397 for (auto it = m_decl_ctx_to_die.find(
2398 (clang::DeclContext *)decl_context.GetOpaqueDeclContext());
2399 it != m_decl_ctx_to_die.end(); it++)
2400 result.push_back(it->second);
2401 return result;
2402}
2403
2404CompilerDecl DWARFASTParserClang::GetDeclForUIDFromDWARF(const DWARFDIE &die) {
2405 clang::Decl *clang_decl = GetClangDeclForDIE(die);
2406 if (clang_decl != nullptr)
2407 return CompilerDecl(&m_ast, clang_decl);
2408 return CompilerDecl();
2409}
2410
2411CompilerDeclContext
2412DWARFASTParserClang::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) {
2413 clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die);
2414 if (clang_decl_ctx)
2415 return CompilerDeclContext(&m_ast, clang_decl_ctx);
2416 return CompilerDeclContext();
2417}
2418
2419CompilerDeclContext
2420DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) {
2421 clang::DeclContext *clang_decl_ctx =
2422 GetClangDeclContextContainingDIE(die, nullptr);
2423 if (clang_decl_ctx)
2424 return CompilerDeclContext(&m_ast, clang_decl_ctx);
2425 return CompilerDeclContext();
2426}
2427
2428size_t DWARFASTParserClang::ParseChildEnumerators(
2429 const SymbolContext &sc, lldb_private::CompilerType &clang_type,
2430 bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die) {
2431 if (!parent_die)
2432 return 0;
2433
2434 size_t enumerators_added = 0;
2435
2436 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2437 die = die.GetSibling()) {
2438 const dw_tag_t tag = die.Tag();
2439 if (tag == DW_TAG_enumerator) {
2440 DWARFAttributes attributes;
2441 const size_t num_child_attributes = die.GetAttributes(attributes);
2442 if (num_child_attributes > 0) {
2443 const char *name = NULL__null;
2444 bool got_value = false;
2445 int64_t enum_value = 0;
2446 Declaration decl;
2447
2448 uint32_t i;
2449 for (i = 0; i < num_child_attributes; ++i) {
2450 const dw_attr_t attr = attributes.AttributeAtIndex(i);
2451 DWARFFormValue form_value;
2452 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2453 switch (attr) {
2454 case DW_AT_const_value:
2455 got_value = true;
2456 if (is_signed)
2457 enum_value = form_value.Signed();
2458 else
2459 enum_value = form_value.Unsigned();
2460 break;
2461
2462 case DW_AT_name:
2463 name = form_value.AsCString();
2464 break;
2465
2466 case DW_AT_description:
2467 default:
2468 case DW_AT_decl_file:
2469 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
2470 form_value.Unsigned()));
2471 break;
2472 case DW_AT_decl_line:
2473 decl.SetLine(form_value.Unsigned());
2474 break;
2475 case DW_AT_decl_column:
2476 decl.SetColumn(form_value.Unsigned());
2477 break;
2478 case DW_AT_sibling:
2479 break;
2480 }
2481 }
2482 }
2483
2484 if (name && name[0] && got_value) {
2485 m_ast.AddEnumerationValueToEnumerationType(
2486 clang_type.GetOpaqueQualType(),
2487 m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()),
2488 decl, name, enum_value, enumerator_byte_size * 8);
2489 ++enumerators_added;
2490 }
2491 }
2492 }
2493 }
2494 return enumerators_added;
2495}
2496
2497#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE1)
2498
2499class DIEStack {
2500public:
2501 void Push(const DWARFDIE &die) { m_dies.push_back(die); }
2502
2503 void LogDIEs(Log *log) {
2504 StreamString log_strm;
2505 const size_t n = m_dies.size();
2506 log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n);
2507 for (size_t i = 0; i < n; i++) {
2508 std::string qualified_name;
2509 const DWARFDIE &die = m_dies[i];
2510 die.GetQualifiedName(qualified_name);
2511 log_strm.Printf("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n", (uint64_t)i,
2512 die.GetOffset(), die.GetTagAsCString(),
2513 qualified_name.c_str());
2514 }
2515 log->PutCString(log_strm.GetData());
2516 }
2517 void Pop() { m_dies.pop_back(); }
2518
2519 class ScopedPopper {
2520 public:
2521 ScopedPopper(DIEStack &die_stack)
2522 : m_die_stack(die_stack), m_valid(false) {}
2523
2524 void Push(const DWARFDIE &die) {
2525 m_valid = true;
2526 m_die_stack.Push(die);
2527 }
2528
2529 ~ScopedPopper() {
2530 if (m_valid)
2531 m_die_stack.Pop();
2532 }
2533
2534 protected:
2535 DIEStack &m_die_stack;
2536 bool m_valid;
2537 };
2538
2539protected:
2540 typedef std::vector<DWARFDIE> Stack;
2541 Stack m_dies;
2542};
2543#endif
2544
2545Function *DWARFASTParserClang::ParseFunctionFromDWARF(const SymbolContext &sc,
2546 const DWARFDIE &die) {
2547 DWARFRangeList func_ranges;
2548 const char *name = NULL__null;
2549 const char *mangled = NULL__null;
2550 int decl_file = 0;
2551 int decl_line = 0;
2552 int decl_column = 0;
2553 int call_file = 0;
2554 int call_line = 0;
2555 int call_column = 0;
2556 DWARFExpression frame_base(die.GetCU());
2557
2558 const dw_tag_t tag = die.Tag();
2559
2560 if (tag != DW_TAG_subprogram)
2561 return NULL__null;
2562
2563 if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line,
2564 decl_column, call_file, call_line, call_column,
2565 &frame_base)) {
2566
2567 // Union of all ranges in the function DIE (if the function is
2568 // discontiguous)
2569 AddressRange func_range;
2570 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0);
2571 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0);
2572 if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) &&
2573 lowest_func_addr <= highest_func_addr) {
2574 ModuleSP module_sp(die.GetModule());
2575 func_range.GetBaseAddress().ResolveAddressUsingFileSections(
2576 lowest_func_addr, module_sp->GetSectionList());
2577 if (func_range.GetBaseAddress().IsValid())
2578 func_range.SetByteSize(highest_func_addr - lowest_func_addr);
2579 }
2580
2581 if (func_range.GetBaseAddress().IsValid()) {
2582 Mangled func_name;
2583 if (mangled)
2584 func_name.SetValue(ConstString(mangled), true);
2585 else if (die.GetParent().Tag() == DW_TAG_compile_unit &&
2586 Language::LanguageIsCPlusPlus(die.GetLanguage()) && name &&
2587 strcmp(name, "main") != 0) {
2588 // If the mangled name is not present in the DWARF, generate the
2589 // demangled name
2590 // using the decl context. We skip if the function is "main" as its name
2591 // is
2592 // never mangled.
2593 bool is_static = false;
2594 bool is_variadic = false;
2595 bool has_template_params = false;
2596 unsigned type_quals = 0;
2597 std::vector<CompilerType> param_types;
2598 std::vector<clang::ParmVarDecl *> param_decls;
2599 DWARFDeclContext decl_ctx;
2600 StreamString sstr;
2601
2602 die.GetDWARFDeclContext(decl_ctx);
2603 sstr << decl_ctx.GetQualifiedName();
2604
2605 clang::DeclContext *containing_decl_ctx =
2606 GetClangDeclContextContainingDIE(die, nullptr);
2607 ParseChildParameters(sc, containing_decl_ctx, die, true, is_static,
2608 is_variadic, has_template_params, param_types,
2609 param_decls, type_quals);
2610 sstr << "(";
2611 for (size_t i = 0; i < param_types.size(); i++) {
2612 if (i > 0)
2613 sstr << ", ";
2614 sstr << param_types[i].GetTypeName();
2615 }
2616 if (is_variadic)
2617 sstr << ", ...";
2618 sstr << ")";
2619 if (type_quals & clang::Qualifiers::Const)
2620 sstr << " const";
2621
2622 func_name.SetValue(ConstString(sstr.GetString()), false);
2623 } else
2624 func_name.SetValue(ConstString(name), false);
2625
2626 FunctionSP func_sp;
2627 std::unique_ptr<Declaration> decl_ap;
2628 if (decl_file != 0 || decl_line != 0 || decl_column != 0)
2629 decl_ap.reset(new Declaration(
2630 sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
2631 decl_line, decl_column));
2632
2633 SymbolFileDWARF *dwarf = die.GetDWARF();
2634 // Supply the type _only_ if it has already been parsed
2635 Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE());
2636
2637 assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED)(static_cast <bool> (func_type == __null || func_type !=
((lldb_private::Type *)1)) ? void (0) : __assert_fail ("func_type == NULL || func_type != DIE_IS_BEING_PARSED"
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 2637, __extension__ __PRETTY_FUNCTION__))
;
2638
2639 if (dwarf->FixupAddress(func_range.GetBaseAddress())) {
2640 const user_id_t func_user_id = die.GetID();
2641 func_sp.reset(new Function(sc.comp_unit,
2642 func_user_id, // UserID is the DIE offset
2643 func_user_id, func_name, func_type,
2644 func_range)); // first address range
2645
2646 if (func_sp.get() != NULL__null) {
2647 if (frame_base.IsValid())
2648 func_sp->GetFrameBaseExpression() = frame_base;
2649 sc.comp_unit->AddFunction(func_sp);
2650 return func_sp.get();
2651 }
2652 }
2653 }
2654 }
2655 return NULL__null;
2656}
2657
2658bool DWARFASTParserClang::ParseChildMembers(
2659 const SymbolContext &sc, const DWARFDIE &parent_die,
2660 CompilerType &class_clang_type, const LanguageType class_language,
2661 std::vector<clang::CXXBaseSpecifier *> &base_classes,
2662 std::vector<int> &member_accessibilities,
2663 DWARFDIECollection &member_function_dies,
2664 DelayedPropertyList &delayed_properties, AccessType &default_accessibility,
2665 bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) {
2666 if (!parent_die)
2667 return 0;
2668
2669 // Get the parent byte size so we can verify any members will fit
2670 const uint64_t parent_byte_size =
2671 parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX(18446744073709551615UL));
2672 const uint64_t parent_bit_size =
2673 parent_byte_size == UINT64_MAX(18446744073709551615UL) ? UINT64_MAX(18446744073709551615UL) : parent_byte_size * 8;
2674
2675 uint32_t member_idx = 0;
2676 BitfieldInfo last_field_info;
2677
2678 ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
2679 ClangASTContext *ast =
2680 llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem());
2681 if (ast == nullptr)
2682 return 0;
2683
2684 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2685 die = die.GetSibling()) {
2686 dw_tag_t tag = die.Tag();
2687
2688 switch (tag) {
2689 case DW_TAG_member:
2690 case DW_TAG_APPLE_property: {
2691 DWARFAttributes attributes;
2692 const size_t num_attributes = die.GetAttributes(attributes);
2693 if (num_attributes > 0) {
2694 Declaration decl;
2695 // DWARFExpression location;
2696 const char *name = NULL__null;
2697 const char *prop_name = NULL__null;
2698 const char *prop_getter_name = NULL__null;
2699 const char *prop_setter_name = NULL__null;
2700 uint32_t prop_attributes = 0;
2701
2702 bool is_artificial = false;
2703 DWARFFormValue encoding_form;
2704 AccessType accessibility = eAccessNone;
2705 uint32_t member_byte_offset =
2706 (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX(4294967295U);
2707 size_t byte_size = 0;
2708 int64_t bit_offset = 0;
2709 uint64_t data_bit_offset = UINT64_MAX(18446744073709551615UL);
2710 size_t bit_size = 0;
2711 bool is_external =
2712 false; // On DW_TAG_members, this means the member is static
2713 uint32_t i;
2714 for (i = 0; i < num_attributes && !is_artificial; ++i) {
2715 const dw_attr_t attr = attributes.AttributeAtIndex(i);
2716 DWARFFormValue form_value;
2717 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2718 switch (attr) {
2719 case DW_AT_decl_file:
2720 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
2721 form_value.Unsigned()));
2722 break;
2723 case DW_AT_decl_line:
2724 decl.SetLine(form_value.Unsigned());
2725 break;
2726 case DW_AT_decl_column:
2727 decl.SetColumn(form_value.Unsigned());
2728 break;
2729 case DW_AT_name:
2730 name = form_value.AsCString();
2731 break;
2732 case DW_AT_type:
2733 encoding_form = form_value;
2734 break;
2735 case DW_AT_bit_offset:
2736 bit_offset = form_value.Signed();
2737 break;
2738 case DW_AT_bit_size:
2739 bit_size = form_value.Unsigned();
2740 break;
2741 case DW_AT_byte_size:
2742 byte_size = form_value.Unsigned();
2743 break;
2744 case DW_AT_data_bit_offset:
2745 data_bit_offset = form_value.Unsigned();
2746 break;
2747 case DW_AT_data_member_location:
2748 if (form_value.BlockData()) {
2749 Value initialValue(0);
2750 Value memberOffset(0);
2751 const DWARFDataExtractor &debug_info_data =
2752 die.GetDWARF()->get_debug_info_data();
2753 uint32_t block_length = form_value.Unsigned();
2754 uint32_t block_offset =
2755 form_value.BlockData() - debug_info_data.GetDataStart();
2756 if (DWARFExpression::Evaluate(
2757 nullptr, // ExecutionContext *
2758 nullptr, // RegisterContext *
2759 module_sp, debug_info_data, die.GetCU(), block_offset,
2760 block_length, eRegisterKindDWARF, &initialValue,
2761 nullptr, memberOffset, nullptr)) {
2762 member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt();
2763 }
2764 } else {
2765 // With DWARF 3 and later, if the value is an integer constant,
2766 // this form value is the offset in bytes from the beginning
2767 // of the containing entity.
2768 member_byte_offset = form_value.Unsigned();
2769 }
2770 break;
2771
2772 case DW_AT_accessibility:
2773 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2774 break;
2775 case DW_AT_artificial:
2776 is_artificial = form_value.Boolean();
2777 break;
2778 case DW_AT_APPLE_property_name:
2779 prop_name = form_value.AsCString();
2780 break;
2781 case DW_AT_APPLE_property_getter:
2782 prop_getter_name = form_value.AsCString();
2783 break;
2784 case DW_AT_APPLE_property_setter:
2785 prop_setter_name = form_value.AsCString();
2786 break;
2787 case DW_AT_APPLE_property_attribute:
2788 prop_attributes = form_value.Unsigned();
2789 break;
2790 case DW_AT_external:
2791 is_external = form_value.Boolean();
2792 break;
2793
2794 default:
2795 case DW_AT_declaration:
2796 case DW_AT_description:
2797 case DW_AT_mutable:
2798 case DW_AT_visibility:
2799 case DW_AT_sibling:
2800 break;
2801 }
2802 }
2803 }
2804
2805 if (prop_name) {
2806 ConstString fixed_getter;
2807 ConstString fixed_setter;
2808
2809 // Check if the property getter/setter were provided as full
2810 // names. We want basenames, so we extract them.
2811
2812 if (prop_getter_name && prop_getter_name[0] == '-') {
2813 ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true);
2814 prop_getter_name = prop_getter_method.GetSelector().GetCString();
2815 }
2816
2817 if (prop_setter_name && prop_setter_name[0] == '-') {
2818 ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true);
2819 prop_setter_name = prop_setter_method.GetSelector().GetCString();
2820 }
2821
2822 // If the names haven't been provided, they need to be
2823 // filled in.
2824
2825 if (!prop_getter_name) {
2826 prop_getter_name = prop_name;
2827 }
2828 if (!prop_setter_name && prop_name[0] &&
2829 !(prop_attributes & DW_APPLE_PROPERTY_readonly)) {
2830 StreamString ss;
2831
2832 ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]);
2833
2834 fixed_setter.SetString(ss.GetString());
2835 prop_setter_name = fixed_setter.GetCString();
2836 }
2837 }
2838
2839 // Clang has a DWARF generation bug where sometimes it
2840 // represents fields that are references with bad byte size
2841 // and bit size/offset information such as:
2842 //
2843 // DW_AT_byte_size( 0x00 )
2844 // DW_AT_bit_size( 0x40 )
2845 // DW_AT_bit_offset( 0xffffffffffffffc0 )
2846 //
2847 // So check the bit offset to make sure it is sane, and if
2848 // the values are not sane, remove them. If we don't do this
2849 // then we will end up with a crash if we try to use this
2850 // type in an expression when clang becomes unhappy with its
2851 // recycled debug info.
2852
2853 if (byte_size == 0 && bit_offset < 0) {
2854 bit_size = 0;
2855 bit_offset = 0;
2856 }
2857
2858 // FIXME: Make Clang ignore Objective-C accessibility for expressions
2859 if (class_language == eLanguageTypeObjC ||
2860 class_language == eLanguageTypeObjC_plus_plus)
2861 accessibility = eAccessNone;
2862
2863 if (member_idx == 0 && !is_artificial && name &&
2864 (strstr(name, "_vptr$") == name)) {
2865 // Not all compilers will mark the vtable pointer
2866 // member as artificial (llvm-gcc). We can't have
2867 // the virtual members in our classes otherwise it
2868 // throws off all child offsets since we end up
2869 // having and extra pointer sized member in our
2870 // class layouts.
2871 is_artificial = true;
2872 }
2873
2874 // Handle static members
2875 if (is_external && member_byte_offset == UINT32_MAX(4294967295U)) {
2876 Type *var_type = die.ResolveTypeUID(DIERef(encoding_form));
2877
2878 if (var_type) {
2879 if (accessibility == eAccessNone)
2880 accessibility = eAccessPublic;
2881 ClangASTContext::AddVariableToRecordType(
2882 class_clang_type, name, var_type->GetLayoutCompilerType(),
2883 accessibility);
2884 }
2885 break;
2886 }
2887
2888 if (is_artificial == false) {
2889 Type *member_type = die.ResolveTypeUID(DIERef(encoding_form));
2890
2891 clang::FieldDecl *field_decl = NULL__null;
2892 if (tag == DW_TAG_member) {
2893 if (member_type) {
2894 if (accessibility == eAccessNone)
2895 accessibility = default_accessibility;
2896 member_accessibilities.push_back(accessibility);
2897
2898 uint64_t field_bit_offset =
2899 (member_byte_offset == UINT32_MAX(4294967295U) ? 0
2900 : (member_byte_offset * 8));
2901 if (bit_size > 0) {
2902
2903 BitfieldInfo this_field_info;
2904 this_field_info.bit_offset = field_bit_offset;
2905 this_field_info.bit_size = bit_size;
2906
2907 /////////////////////////////////////////////////////////////
2908 // How to locate a field given the DWARF debug information
2909 //
2910 // AT_byte_size indicates the size of the word in which the
2911 // bit offset must be interpreted.
2912 //
2913 // AT_data_member_location indicates the byte offset of the
2914 // word from the base address of the structure.
2915 //
2916 // AT_bit_offset indicates how many bits into the word
2917 // (according to the host endianness) the low-order bit of
2918 // the field starts. AT_bit_offset can be negative.
2919 //
2920 // AT_bit_size indicates the size of the field in bits.
2921 /////////////////////////////////////////////////////////////
2922
2923 if (data_bit_offset != UINT64_MAX(18446744073709551615UL)) {
2924 this_field_info.bit_offset = data_bit_offset;
2925 } else {
2926 if (byte_size == 0)
2927 byte_size = member_type->GetByteSize();
2928
2929 ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2930 if (objfile->GetByteOrder() == eByteOrderLittle) {
2931 this_field_info.bit_offset += byte_size * 8;
2932 this_field_info.bit_offset -= (bit_offset + bit_size);
2933 } else {
2934 this_field_info.bit_offset += bit_offset;
2935 }
2936 }
2937
2938 if ((this_field_info.bit_offset >= parent_bit_size) ||
2939 !last_field_info.NextBitfieldOffsetIsValid(
2940 this_field_info.bit_offset)) {
2941 ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2942 objfile->GetModule()->ReportWarning(
2943 "0x%8.8" PRIx64"l" "x" ": %s bitfield named \"%s\" has invalid "
2944 "bit offset (0x%8.8" PRIx64"l" "x"
2945 ") member will be ignored. Please file a bug against the "
2946 "compiler and include the preprocessed output for %s\n",
2947 die.GetID(), DW_TAG_value_to_name(tag), name,
2948 this_field_info.bit_offset,
2949 sc.comp_unit ? sc.comp_unit->GetPath().c_str()
2950 : "the source file");
2951 this_field_info.Clear();
2952 continue;
2953 }
2954
2955 // Update the field bit offset we will report for layout
2956 field_bit_offset = this_field_info.bit_offset;
2957
2958 // If the member to be emitted did not start on a character
2959 // boundary and there is
2960 // empty space between the last field and this one, then we need
2961 // to emit an
2962 // anonymous member filling up the space up to its start. There
2963 // are three cases
2964 // here:
2965 //
2966 // 1 If the previous member ended on a character boundary, then
2967 // we can emit an
2968 // anonymous member starting at the most recent character
2969 // boundary.
2970 //
2971 // 2 If the previous member did not end on a character boundary
2972 // and the distance
2973 // from the end of the previous member to the current member
2974 // is less than a
2975 // word width, then we can emit an anonymous member starting
2976 // right after the
2977 // previous member and right before this member.
2978 //
2979 // 3 If the previous member did not end on a character boundary
2980 // and the distance
2981 // from the end of the previous member to the current member
2982 // is greater than
2983 // or equal a word width, then we act as in Case 1.
2984
2985 const uint64_t character_width = 8;
2986 const uint64_t word_width = 32;
2987
2988 // Objective-C has invalid DW_AT_bit_offset values in older
2989 // versions
2990 // of clang, so we have to be careful and only insert unnamed
2991 // bitfields
2992 // if we have a new enough clang.
2993 bool detect_unnamed_bitfields = true;
2994
2995 if (class_language == eLanguageTypeObjC ||
2996 class_language == eLanguageTypeObjC_plus_plus)
2997 detect_unnamed_bitfields =
2998 die.GetCU()->Supports_unnamed_objc_bitfields();
2999
3000 if (detect_unnamed_bitfields) {
3001 BitfieldInfo anon_field_info;
3002
3003 if ((this_field_info.bit_offset % character_width) !=
3004 0) // not char aligned
3005 {
3006 uint64_t last_field_end = 0;
3007
3008 if (last_field_info.IsValid())
3009 last_field_end =
3010 last_field_info.bit_offset + last_field_info.bit_size;
3011
3012 if (this_field_info.bit_offset != last_field_end) {
3013 if (((last_field_end % character_width) == 0) || // case 1
3014 (this_field_info.bit_offset - last_field_end >=
3015 word_width)) // case 3
3016 {
3017 anon_field_info.bit_size =
3018 this_field_info.bit_offset % character_width;
3019 anon_field_info.bit_offset =
3020 this_field_info.bit_offset -
3021 anon_field_info.bit_size;
3022 } else // case 2
3023 {
3024 anon_field_info.bit_size =
3025 this_field_info.bit_offset - last_field_end;
3026 anon_field_info.bit_offset = last_field_end;
3027 }
3028 }
3029 }
3030
3031 if (anon_field_info.IsValid()) {
3032 clang::FieldDecl *unnamed_bitfield_decl =
3033 ClangASTContext::AddFieldToRecordType(
3034 class_clang_type, NULL__null,
3035 m_ast.GetBuiltinTypeForEncodingAndBitSize(
3036 eEncodingSint, word_width),
3037 accessibility, anon_field_info.bit_size);
3038
3039 layout_info.field_offsets.insert(std::make_pair(
3040 unnamed_bitfield_decl, anon_field_info.bit_offset));
3041 }
3042 }
3043 last_field_info = this_field_info;
3044 } else {
3045 last_field_info.Clear();
3046 }
3047
3048 CompilerType member_clang_type =
3049 member_type->GetLayoutCompilerType();
3050 if (!member_clang_type.IsCompleteType())
3051 member_clang_type.GetCompleteType();
3052
3053 {
3054 // Older versions of clang emit array[0] and array[1] in the
3055 // same way (<rdar://problem/12566646>).
3056 // If the current field is at the end of the structure, then
3057 // there is definitely no room for extra
3058 // elements and we override the type to array[0].
3059
3060 CompilerType member_array_element_type;
3061 uint64_t member_array_size;
3062 bool member_array_is_incomplete;
3063
3064 if (member_clang_type.IsArrayType(
3065 &member_array_element_type, &member_array_size,
3066 &member_array_is_incomplete) &&
3067 !member_array_is_incomplete) {
3068 uint64_t parent_byte_size =
3069 parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size,
3070 UINT64_MAX(18446744073709551615UL));
3071
3072 if (member_byte_offset >= parent_byte_size) {
3073 if (member_array_size != 1 &&
3074 (member_array_size != 0 ||
3075 member_byte_offset > parent_byte_size)) {
3076 module_sp->ReportError(
3077 "0x%8.8" PRIx64"l" "x"
3078 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x"
3079 " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x",
3080 die.GetID(), name, encoding_form.Reference(),
3081 parent_die.GetID());
3082 }
3083
3084 member_clang_type = m_ast.CreateArrayType(
3085 member_array_element_type, 0, false);
3086 }
3087 }
3088 }
3089
3090 if (ClangASTContext::IsCXXClassType(member_clang_type) &&
3091 member_clang_type.GetCompleteType() == false) {
3092 if (die.GetCU()->GetProducer() ==
3093 DWARFCompileUnit::eProducerClang)
3094 module_sp->ReportError(
3095 "DWARF DIE at 0x%8.8x (class %s) has a member variable "
3096 "0x%8.8x (%s) whose type is a forward declaration, not a "
3097 "complete definition.\nTry compiling the source file "
3098 "with -fstandalone-debug",
3099 parent_die.GetOffset(), parent_die.GetName(),
3100 die.GetOffset(), name);
3101 else
3102 module_sp->ReportError(
3103 "DWARF DIE at 0x%8.8x (class %s) has a member variable "
3104 "0x%8.8x (%s) whose type is a forward declaration, not a "
3105 "complete definition.\nPlease file a bug against the "
3106 "compiler and include the preprocessed output for %s",
3107 parent_die.GetOffset(), parent_die.GetName(),
3108 die.GetOffset(), name,
3109 sc.comp_unit ? sc.comp_unit->GetPath().c_str()
3110 : "the source file");
3111 // We have no choice other than to pretend that the member class
3112 // is complete. If we don't do this, clang will crash when
3113 // trying
3114 // to layout the class. Since we provide layout assistance, all
3115 // ivars in this class and other classes will be fine, this is
3116 // the best we can do short of crashing.
3117 if (ClangASTContext::StartTagDeclarationDefinition(
3118 member_clang_type)) {
3119 ClangASTContext::CompleteTagDeclarationDefinition(
3120 member_clang_type);
3121 } else {
3122 module_sp->ReportError(
3123 "DWARF DIE at 0x%8.8x (class %s) has a member variable "
3124 "0x%8.8x (%s) whose type claims to be a C++ class but we "
3125 "were not able to start its definition.\nPlease file a "
3126 "bug and attach the file at the start of this error "
3127 "message",
3128 parent_die.GetOffset(), parent_die.GetName(),
3129 die.GetOffset(), name);
3130 }
3131 }
3132
3133 field_decl = ClangASTContext::AddFieldToRecordType(
3134 class_clang_type, name, member_clang_type, accessibility,
3135 bit_size);
3136
3137 m_ast.SetMetadataAsUserID(field_decl, die.GetID());
3138
3139 layout_info.field_offsets.insert(
3140 std::make_pair(field_decl, field_bit_offset));
3141 } else {
3142 if (name)
3143 module_sp->ReportError(
3144 "0x%8.8" PRIx64"l" "x"
3145 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x"
3146 " which was unable to be parsed",
3147 die.GetID(), name, encoding_form.Reference());
3148 else
3149 module_sp->ReportError(
3150 "0x%8.8" PRIx64"l" "x"
3151 ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x"
3152 " which was unable to be parsed",
3153 die.GetID(), encoding_form.Reference());
3154 }
3155 }
3156
3157 if (prop_name != NULL__null && member_type) {
3158 clang::ObjCIvarDecl *ivar_decl = NULL__null;
3159
3160 if (field_decl) {
3161 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
3162 assert(ivar_decl != NULL)(static_cast <bool> (ivar_decl != __null) ? void (0) : __assert_fail
("ivar_decl != NULL", "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3162, __extension__ __PRETTY_FUNCTION__))
;
3163 }
3164
3165 ClangASTMetadata metadata;
3166 metadata.SetUserID(die.GetID());
3167 delayed_properties.push_back(DelayedAddObjCClassProperty(
3168 class_clang_type, prop_name,
3169 member_type->GetLayoutCompilerType(), ivar_decl,
3170 prop_setter_name, prop_getter_name, prop_attributes,
3171 &metadata));
3172
3173 if (ivar_decl)
3174 m_ast.SetMetadataAsUserID(ivar_decl, die.GetID());
3175 }
3176 }
3177 }
3178 ++member_idx;
3179 } break;
3180
3181 case DW_TAG_subprogram:
3182 // Let the type parsing code handle this one for us.
3183 member_function_dies.Append(die);
3184 break;
3185
3186 case DW_TAG_inheritance: {
3187 is_a_class = true;
3188 if (default_accessibility == eAccessNone)
3189 default_accessibility = eAccessPrivate;
3190 // TODO: implement DW_TAG_inheritance type parsing
3191 DWARFAttributes attributes;
3192 const size_t num_attributes = die.GetAttributes(attributes);
3193 if (num_attributes > 0) {
3194 Declaration decl;
3195 DWARFExpression location(die.GetCU());
3196 DWARFFormValue encoding_form;
3197 AccessType accessibility = default_accessibility;
3198 bool is_virtual = false;
3199 bool is_base_of_class = true;
3200 off_t member_byte_offset = 0;
3201 uint32_t i;
3202 for (i = 0; i < num_attributes; ++i) {
3203 const dw_attr_t attr = attributes.AttributeAtIndex(i);
3204 DWARFFormValue form_value;
3205 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3206 switch (attr) {
3207 case DW_AT_decl_file:
3208 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
3209 form_value.Unsigned()));
3210 break;
3211 case DW_AT_decl_line:
3212 decl.SetLine(form_value.Unsigned());
3213 break;
3214 case DW_AT_decl_column:
3215 decl.SetColumn(form_value.Unsigned());
3216 break;
3217 case DW_AT_type:
3218 encoding_form = form_value;
3219 break;
3220 case DW_AT_data_member_location:
3221 if (form_value.BlockData()) {
3222 Value initialValue(0);
3223 Value memberOffset(0);
3224 const DWARFDataExtractor &debug_info_data =
3225 die.GetDWARF()->get_debug_info_data();
3226 uint32_t block_length = form_value.Unsigned();
3227 uint32_t block_offset =
3228 form_value.BlockData() - debug_info_data.GetDataStart();
3229 if (DWARFExpression::Evaluate(nullptr, nullptr, module_sp,
3230 debug_info_data, die.GetCU(),
3231 block_offset, block_length,
3232 eRegisterKindDWARF, &initialValue,
3233 nullptr, memberOffset, nullptr)) {
3234 member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt();
3235 }
3236 } else {
3237 // With DWARF 3 and later, if the value is an integer constant,
3238 // this form value is the offset in bytes from the beginning
3239 // of the containing entity.
3240 member_byte_offset = form_value.Unsigned();
3241 }
3242 break;
3243
3244 case DW_AT_accessibility:
3245 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
3246 break;
3247
3248 case DW_AT_virtuality:
3249 is_virtual = form_value.Boolean();
3250 break;
3251
3252 case DW_AT_sibling:
3253 break;
3254
3255 default:
3256 break;
3257 }
3258 }
3259 }
3260
3261 Type *base_class_type = die.ResolveTypeUID(DIERef(encoding_form));
3262 if (base_class_type == NULL__null) {
3263 module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to "
3264 "resolve the base class at 0x%8.8" PRIx64"l" "x"
3265 " from enclosing type 0x%8.8x. \nPlease file "
3266 "a bug and attach the file at the start of "
3267 "this error message",
3268 die.GetOffset(), encoding_form.Reference(),
3269 parent_die.GetOffset());
3270 break;
3271 }
3272
3273 CompilerType base_class_clang_type =
3274 base_class_type->GetFullCompilerType();
3275 assert(base_class_clang_type)(static_cast <bool> (base_class_clang_type) ? void (0) :
__assert_fail ("base_class_clang_type", "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3275, __extension__ __PRETTY_FUNCTION__))
;
3276 if (class_language == eLanguageTypeObjC) {
3277 ast->SetObjCSuperClass(class_clang_type, base_class_clang_type);
3278 } else {
3279 base_classes.push_back(ast->CreateBaseClassSpecifier(
3280 base_class_clang_type.GetOpaqueQualType(), accessibility,
3281 is_virtual, is_base_of_class));
3282
3283 if (is_virtual) {
3284 // Do not specify any offset for virtual inheritance. The DWARF
3285 // produced by clang doesn't
3286 // give us a constant offset, but gives us a DWARF expressions that
3287 // requires an actual object
3288 // in memory. the DW_AT_data_member_location for a virtual base
3289 // class looks like:
3290 // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref,
3291 // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref,
3292 // DW_OP_plus )
3293 // Given this, there is really no valid response we can give to
3294 // clang for virtual base
3295 // class offsets, and this should eventually be removed from
3296 // LayoutRecordType() in the external
3297 // AST source in clang.
3298 } else {
3299 layout_info.base_offsets.insert(std::make_pair(
3300 ast->GetAsCXXRecordDecl(
3301 base_class_clang_type.GetOpaqueQualType()),
3302 clang::CharUnits::fromQuantity(member_byte_offset)));
3303 }
3304 }
3305 }
3306 } break;
3307
3308 default:
3309 break;
3310 }
3311 }
3312
3313 return true;
3314}
3315
3316size_t DWARFASTParserClang::ParseChildParameters(
3317 const SymbolContext &sc, clang::DeclContext *containing_decl_ctx,
3318 const DWARFDIE &parent_die, bool skip_artificial, bool &is_static,
3319 bool &is_variadic, bool &has_template_params,
3320 std::vector<CompilerType> &function_param_types,
3321 std::vector<clang::ParmVarDecl *> &function_param_decls,
3322 unsigned &type_quals) {
3323 if (!parent_die)
3324 return 0;
3325
3326 size_t arg_idx = 0;
3327 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
3328 die = die.GetSibling()) {
3329 const dw_tag_t tag = die.Tag();
3330 switch (tag) {
3331 case DW_TAG_formal_parameter: {
3332 DWARFAttributes attributes;
3333 const size_t num_attributes = die.GetAttributes(attributes);
3334 if (num_attributes > 0) {
3335 const char *name = NULL__null;
3336 Declaration decl;
3337 DWARFFormValue param_type_die_form;
3338 bool is_artificial = false;
3339 // one of None, Auto, Register, Extern, Static, PrivateExtern
3340
3341 clang::StorageClass storage = clang::SC_None;
3342 uint32_t i;
3343 for (i = 0; i < num_attributes; ++i) {
3344 const dw_attr_t attr = attributes.AttributeAtIndex(i);
3345 DWARFFormValue form_value;
3346 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3347 switch (attr) {
3348 case DW_AT_decl_file:
3349 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
3350 form_value.Unsigned()));
3351 break;
3352 case DW_AT_decl_line:
3353 decl.SetLine(form_value.Unsigned());
3354 break;
3355 case DW_AT_decl_column:
3356 decl.SetColumn(form_value.Unsigned());
3357 break;
3358 case DW_AT_name:
3359 name = form_value.AsCString();
3360 break;
3361 case DW_AT_type:
3362 param_type_die_form = form_value;
3363 break;
3364 case DW_AT_artificial:
3365 is_artificial = form_value.Boolean();
3366 break;
3367 case DW_AT_location:
3368 // if (form_value.BlockData())
3369 // {
3370 // const DWARFDataExtractor&
3371 // debug_info_data = debug_info();
3372 // uint32_t block_length =
3373 // form_value.Unsigned();
3374 // DWARFDataExtractor
3375 // location(debug_info_data,
3376 // form_value.BlockData() -
3377 // debug_info_data.GetDataStart(),
3378 // block_length);
3379 // }
3380 // else
3381 // {
3382 // }
3383 // break;
3384 case DW_AT_const_value:
3385 case DW_AT_default_value:
3386 case DW_AT_description:
3387 case DW_AT_endianity:
3388 case DW_AT_is_optional:
3389 case DW_AT_segment:
3390 case DW_AT_variable_parameter:
3391 default:
3392 case DW_AT_abstract_origin:
3393 case DW_AT_sibling:
3394 break;
3395 }
3396 }
3397 }
3398
3399 bool skip = false;
3400 if (skip_artificial) {
3401 if (is_artificial) {
3402 // In order to determine if a C++ member function is
3403 // "const" we have to look at the const-ness of "this"...
3404 // Ugly, but that
3405 if (arg_idx == 0) {
3406 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) {
3407 // Often times compilers omit the "this" name for the
3408 // specification DIEs, so we can't rely upon the name
3409 // being in the formal parameter DIE...
3410 if (name == NULL__null || ::strcmp(name, "this") == 0) {
3411 Type *this_type =
3412 die.ResolveTypeUID(DIERef(param_type_die_form));
3413 if (this_type) {
3414 uint32_t encoding_mask = this_type->GetEncodingMask();
3415 if (encoding_mask & Type::eEncodingIsPointerUID) {
3416 is_static = false;
3417
3418 if (encoding_mask & (1u << Type::eEncodingIsConstUID))
3419 type_quals |= clang::Qualifiers::Const;
3420 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
3421 type_quals |= clang::Qualifiers::Volatile;
3422 }
3423 }
3424 }
3425 }
3426 }
3427 skip = true;
3428 } else {
3429
3430 // HACK: Objective C formal parameters "self" and "_cmd"
3431 // are not marked as artificial in the DWARF...
3432 CompileUnit *comp_unit = die.GetLLDBCompileUnit();
3433 if (comp_unit) {
3434 switch (comp_unit->GetLanguage()) {
3435 case eLanguageTypeObjC:
3436 case eLanguageTypeObjC_plus_plus:
3437 if (name && name[0] &&
3438 (strcmp(name, "self") == 0 || strcmp(name, "_cmd") == 0))
3439 skip = true;
3440 break;
3441 default:
3442 break;
3443 }
3444 }
3445 }
3446 }
3447
3448 if (!skip) {
3449 Type *type = die.ResolveTypeUID(DIERef(param_type_die_form));
3450 if (type) {
3451 function_param_types.push_back(type->GetForwardCompilerType());
3452
3453 clang::ParmVarDecl *param_var_decl =
3454 m_ast.CreateParameterDeclaration(
3455 name, type->GetForwardCompilerType(), storage);
3456 assert(param_var_decl)(static_cast <bool> (param_var_decl) ? void (0) : __assert_fail
("param_var_decl", "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3456, __extension__ __PRETTY_FUNCTION__))
;
3457 function_param_decls.push_back(param_var_decl);
3458
3459 m_ast.SetMetadataAsUserID(param_var_decl, die.GetID());
3460 }
3461 }
3462 }
3463 arg_idx++;
3464 } break;
3465
3466 case DW_TAG_unspecified_parameters:
3467 is_variadic = true;
3468 break;
3469
3470 case DW_TAG_template_type_parameter:
3471 case DW_TAG_template_value_parameter:
3472 case DW_TAG_GNU_template_parameter_pack:
3473 // The one caller of this was never using the template_param_infos,
3474 // and the local variable was taking up a large amount of stack space
3475 // in SymbolFileDWARF::ParseType() so this was removed. If we ever need
3476 // the template params back, we can add them back.
3477 // ParseTemplateDIE (dwarf_cu, die, template_param_infos);
3478 has_template_params = true;
3479 break;
3480
3481 default:
3482 break;
3483 }
3484 }
3485 return arg_idx;
3486}
3487
3488void DWARFASTParserClang::ParseChildArrayInfo(
3489 const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index,
3490 std::vector<uint64_t> &element_orders, uint32_t &byte_stride,
3491 uint32_t &bit_stride) {
3492 if (!parent_die)
3493 return;
3494
3495 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
3496 die = die.GetSibling()) {
3497 const dw_tag_t tag = die.Tag();
3498 switch (tag) {
3499 case DW_TAG_subrange_type: {
3500 DWARFAttributes attributes;
3501 const size_t num_child_attributes = die.GetAttributes(attributes);
3502 if (num_child_attributes > 0) {
3503 uint64_t num_elements = 0;
3504 uint64_t lower_bound = 0;
3505 uint64_t upper_bound = 0;
3506 bool upper_bound_valid = false;
3507 uint32_t i;
3508 for (i = 0; i < num_child_attributes; ++i) {
3509 const dw_attr_t attr = attributes.AttributeAtIndex(i);
3510 DWARFFormValue form_value;
3511 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3512 switch (attr) {
3513 case DW_AT_name:
3514 break;
3515
3516 case DW_AT_count:
3517 num_elements = form_value.Unsigned();
3518 break;
3519
3520 case DW_AT_bit_stride:
3521 bit_stride = form_value.Unsigned();
3522 break;
3523
3524 case DW_AT_byte_stride:
3525 byte_stride = form_value.Unsigned();
3526 break;
3527
3528 case DW_AT_lower_bound:
3529 lower_bound = form_value.Unsigned();
3530 break;
3531
3532 case DW_AT_upper_bound:
3533 upper_bound_valid = true;
3534 upper_bound = form_value.Unsigned();
3535 break;
3536
3537 default:
3538 case DW_AT_abstract_origin:
3539 case DW_AT_accessibility:
3540 case DW_AT_allocated:
3541 case DW_AT_associated:
3542 case DW_AT_data_location:
3543 case DW_AT_declaration:
3544 case DW_AT_description:
3545 case DW_AT_sibling:
3546 case DW_AT_threads_scaled:
3547 case DW_AT_type:
3548 case DW_AT_visibility:
3549 break;
3550 }
3551 }
3552 }
3553
3554 if (num_elements == 0) {
3555 if (upper_bound_valid && upper_bound >= lower_bound)
3556 num_elements = upper_bound - lower_bound + 1;
3557 }
3558
3559 element_orders.push_back(num_elements);
3560 }
3561 } break;
3562 }
3563 }
3564}
3565
3566Type *DWARFASTParserClang::GetTypeForDIE(const DWARFDIE &die) {
3567 if (die) {
3568 SymbolFileDWARF *dwarf = die.GetDWARF();
3569 DWARFAttributes attributes;
3570 const size_t num_attributes = die.GetAttributes(attributes);
3571 if (num_attributes > 0) {
3572 DWARFFormValue type_die_form;
3573 for (size_t i = 0; i < num_attributes; ++i) {
3574 dw_attr_t attr = attributes.AttributeAtIndex(i);
3575 DWARFFormValue form_value;
3576
3577 if (attr == DW_AT_type &&
3578 attributes.ExtractFormValueAtIndex(i, form_value))
3579 return dwarf->ResolveTypeUID(dwarf->GetDIE(DIERef(form_value)), true);
3580 }
3581 }
3582 }
3583
3584 return nullptr;
3585}
3586
3587clang::Decl *DWARFASTParserClang::GetClangDeclForDIE(const DWARFDIE &die) {
3588 if (!die)
3589 return nullptr;
3590
3591 switch (die.Tag()) {
3592 case DW_TAG_variable:
3593 case DW_TAG_constant:
3594 case DW_TAG_formal_parameter:
3595 case DW_TAG_imported_declaration:
3596 case DW_TAG_imported_module:
3597 break;
3598 default:
3599 return nullptr;
3600 }
3601
3602 DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE());
3603 if (cache_pos != m_die_to_decl.end())
3604 return cache_pos->second;
3605
3606 if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) {
3607 clang::Decl *decl = GetClangDeclForDIE(spec_die);
3608 m_die_to_decl[die.GetDIE()] = decl;
3609 m_decl_to_die[decl].insert(die.GetDIE());
3610 return decl;
3611 }
3612
3613 if (DWARFDIE abstract_origin_die =
3614 die.GetReferencedDIE(DW_AT_abstract_origin)) {
3615 clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die);
3616 m_die_to_decl[die.GetDIE()] = decl;
3617 m_decl_to_die[decl].insert(die.GetDIE());
3618 return decl;
3619 }
3620
3621 clang::Decl *decl = nullptr;
3622 switch (die.Tag()) {
3623 case DW_TAG_variable:
3624 case DW_TAG_constant:
3625 case DW_TAG_formal_parameter: {
3626 SymbolFileDWARF *dwarf = die.GetDWARF();
3627 Type *type = GetTypeForDIE(die);
3628 if (dwarf && type) {
3629 const char *name = die.GetName();
3630 clang::DeclContext *decl_context =
3631 ClangASTContext::DeclContextGetAsDeclContext(
3632 dwarf->GetDeclContextContainingUID(die.GetID()));
3633 decl = m_ast.CreateVariableDeclaration(
3634 decl_context, name,
3635 ClangUtil::GetQualType(type->GetForwardCompilerType()));
3636 }
3637 break;
3638 }
3639 case DW_TAG_imported_declaration: {
3640 SymbolFileDWARF *dwarf = die.GetDWARF();
3641 DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3642 if (imported_uid) {
3643 CompilerDecl imported_decl = imported_uid.GetDecl();
3644 if (imported_decl) {
3645 clang::DeclContext *decl_context =
3646 ClangASTContext::DeclContextGetAsDeclContext(
3647 dwarf->GetDeclContextContainingUID(die.GetID()));
3648 if (clang::NamedDecl *clang_imported_decl =
3649 llvm::dyn_cast<clang::NamedDecl>(
3650 (clang::Decl *)imported_decl.GetOpaqueDecl()))
3651 decl =
3652 m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl);
3653 }
3654 }
3655 break;
3656 }
3657 case DW_TAG_imported_module: {
3658 SymbolFileDWARF *dwarf = die.GetDWARF();
3659 DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3660
3661 if (imported_uid) {
3662 CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext();
3663 if (imported_decl_ctx) {
3664 clang::DeclContext *decl_context =
3665 ClangASTContext::DeclContextGetAsDeclContext(
3666 dwarf->GetDeclContextContainingUID(die.GetID()));
3667 if (clang::NamespaceDecl *ns_decl =
3668 ClangASTContext::DeclContextGetAsNamespaceDecl(
3669 imported_decl_ctx))
3670 decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl);
3671 }
3672 }
3673 break;
3674 }
3675 default:
3676 break;
3677 }
3678
3679 m_die_to_decl[die.GetDIE()] = decl;
3680 m_decl_to_die[decl].insert(die.GetDIE());
3681
3682 return decl;
3683}
3684
3685clang::DeclContext *
3686DWARFASTParserClang::GetClangDeclContextForDIE(const DWARFDIE &die) {
3687 if (die) {
3688 clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die);
3689 if (decl_ctx)
3690 return decl_ctx;
3691
3692 bool try_parsing_type = true;
3693 switch (die.Tag()) {
3694 case DW_TAG_compile_unit:
3695 decl_ctx = m_ast.GetTranslationUnitDecl();
3696 try_parsing_type = false;
3697 break;
3698
3699 case DW_TAG_namespace:
3700 decl_ctx = ResolveNamespaceDIE(die);
3701 try_parsing_type = false;
3702 break;
3703
3704 case DW_TAG_lexical_block:
3705 decl_ctx = GetDeclContextForBlock(die);
3706 try_parsing_type = false;
3707 break;
3708
3709 default:
3710 break;
3711 }
3712
3713 if (decl_ctx == nullptr && try_parsing_type) {
3714 Type *type = die.GetDWARF()->ResolveType(die);
3715 if (type)
3716 decl_ctx = GetCachedClangDeclContextForDIE(die);
3717 }
3718
3719 if (decl_ctx) {
3720 LinkDeclContextToDIE(decl_ctx, die);
3721 return decl_ctx;
3722 }
3723 }
3724 return nullptr;
3725}
3726
3727static bool IsSubroutine(const DWARFDIE &die) {
3728 switch (die.Tag()) {
3729 case DW_TAG_subprogram:
3730 case DW_TAG_inlined_subroutine:
3731 return true;
3732 default:
3733 return false;
3734 }
3735}
3736
3737static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die) {
3738 for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) {
3739 if (IsSubroutine(candidate)) {
3740 if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3741 return candidate;
3742 } else {
3743 return DWARFDIE();
3744 }
3745 }
3746 }
3747 assert(0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "(static_cast <bool> (0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "
"something not in a function") ? void (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\""
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3748, __extension__ __PRETTY_FUNCTION__))
3748 "something not in a function")(static_cast <bool> (0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "
"something not in a function") ? void (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\""
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3748, __extension__ __PRETTY_FUNCTION__))
;
3749 return DWARFDIE();
3750}
3751
3752static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context) {
3753 for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid();
3754 candidate = candidate.GetSibling()) {
3755 if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3756 return candidate;
3757 }
3758 }
3759 return DWARFDIE();
3760}
3761
3762static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block,
3763 const DWARFDIE &function) {
3764 assert(IsSubroutine(function))(static_cast <bool> (IsSubroutine(function)) ? void (0)
: __assert_fail ("IsSubroutine(function)", "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3764, __extension__ __PRETTY_FUNCTION__))
;
3765 for (DWARFDIE context = block; context != function.GetParent();
3766 context = context.GetParent()) {
3767 assert(!IsSubroutine(context) || context == function)(static_cast <bool> (!IsSubroutine(context) || context ==
function) ? void (0) : __assert_fail ("!IsSubroutine(context) || context == function"
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3767, __extension__ __PRETTY_FUNCTION__))
;
3768 if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) {
3769 return child;
3770 }
3771 }
3772 return DWARFDIE();
3773}
3774
3775clang::DeclContext *
3776DWARFASTParserClang::GetDeclContextForBlock(const DWARFDIE &die) {
3777 assert(die.Tag() == DW_TAG_lexical_block)(static_cast <bool> (die.Tag() == DW_TAG_lexical_block)
? void (0) : __assert_fail ("die.Tag() == DW_TAG_lexical_block"
, "/build/llvm-toolchain-snapshot-6.0~svn321639/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3777, __extension__ __PRETTY_FUNCTION__))
;
3778 DWARFDIE containing_function_with_abstract_origin =
3779 GetContainingFunctionWithAbstractOrigin(die);
3780 if (!containing_function_with_abstract_origin) {
3781 return (clang::DeclContext *)ResolveBlockDIE(die);
3782 }
3783 DWARFDIE child = FindFirstChildWithAbstractOrigin(
3784 die, containing_function_with_abstract_origin);
3785 CompilerDeclContext decl_context =
3786 GetDeclContextContainingUIDFromDWARF(child);
3787 return (clang::DeclContext *)decl_context.GetOpaqueDeclContext();
3788}
3789
3790clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) {
3791 if (die && die.Tag() == DW_TAG_lexical_block) {
3792 clang::BlockDecl *decl =
3793 llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]);
3794
3795 if (!decl) {
3796 DWARFDIE decl_context_die;
3797 clang::DeclContext *decl_context =
3798 GetClangDeclContextContainingDIE(die, &decl_context_die);
3799 decl = m_ast.CreateBlockDeclaration(decl_context);
3800
3801 if (decl)
3802 LinkDeclContextToDIE((clang::DeclContext *)decl, die);
3803 }
3804
3805 return decl;
3806 }
3807 return nullptr;
3808}
3809
3810clang::NamespaceDecl *
3811DWARFASTParserClang::ResolveNamespaceDIE(const DWARFDIE &die) {
3812 if (die && die.Tag() == DW_TAG_namespace) {
3813 // See if we already parsed this namespace DIE and associated it with a
3814 // uniqued namespace declaration
3815 clang::NamespaceDecl *namespace_decl =
3816 static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]);
3817 if (namespace_decl)
3818 return namespace_decl;
3819 else {
3820 const char *namespace_name = die.GetName();
3821 clang::DeclContext *containing_decl_ctx =
3822 GetClangDeclContextContainingDIE(die, nullptr);
3823 namespace_decl = m_ast.GetUniqueNamespaceDeclaration(namespace_name,
3824 containing_decl_ctx);
3825 Log *log =
3826 nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
3827 if (log) {
3828 SymbolFileDWARF *dwarf = die.GetDWARF();
3829 if (namespace_name) {
3830 dwarf->GetObjectFile()->GetModule()->LogMessage(
3831 log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x"
3832 ": DW_TAG_namespace with DW_AT_name(\"%s\") => "
3833 "clang::NamespaceDecl *%p (original = %p)",
3834 static_cast<void *>(m_ast.getASTContext()), die.GetID(),
3835 namespace_name, static_cast<void *>(namespace_decl),
3836 static_cast<void *>(namespace_decl->getOriginalNamespace()));
3837 } else {
3838 dwarf->GetObjectFile()->GetModule()->LogMessage(
3839 log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x"
3840 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p "
3841 "(original = %p)",
3842 static_cast<void *>(m_ast.getASTContext()), die.GetID(),
3843 static_cast<void *>(namespace_decl),
3844 static_cast<void *>(namespace_decl->getOriginalNamespace()));
3845 }
3846 }
3847
3848 if (namespace_decl)
3849 LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die);
3850 return namespace_decl;
3851 }
3852 }
3853 return nullptr;
3854}
3855
3856clang::DeclContext *DWARFASTParserClang::GetClangDeclContextContainingDIE(
3857 const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) {
3858 SymbolFileDWARF *dwarf = die.GetDWARF();
3859
3860 DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die);
3861
3862 if (decl_ctx_die_copy)
3863 *decl_ctx_die_copy = decl_ctx_die;
3864
3865 if (decl_ctx_die) {
3866 clang::DeclContext *clang_decl_ctx =
3867 GetClangDeclContextForDIE(decl_ctx_die);
3868 if (clang_decl_ctx)
3869 return clang_decl_ctx;
3870 }
3871 return m_ast.GetTranslationUnitDecl();
3872}
3873
3874clang::DeclContext *
3875DWARFASTParserClang::GetCachedClangDeclContextForDIE(const DWARFDIE &die) {
3876 if (die) {
3877 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE());
3878 if (pos != m_die_to_decl_ctx.end())
3879 return pos->second;
3880 }
3881 return nullptr;
3882}
3883
3884void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx,
3885 const DWARFDIE &die) {
3886 m_die_to_decl_ctx[die.GetDIE()] = decl_ctx;
3887 // There can be many DIEs for a single decl context
3888 // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE());
3889 m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die));
3890}
3891
3892bool DWARFASTParserClang::CopyUniqueClassMethodTypes(
3893 const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die,
3894 lldb_private::Type *class_type, DWARFDIECollection &failures) {
3895 if (!class_type || !src_class_die || !dst_class_die)
3896 return false;
3897 if (src_class_die.Tag() != dst_class_die.Tag())
3898 return false;
3899
3900 // We need to complete the class type so we can get all of the method types
3901 // parsed so we can then unique those types to their equivalent counterparts
3902 // in "dst_cu" and "dst_class_die"
3903 class_type->GetFullCompilerType();
3904
3905 DWARFDIE src_die;
3906 DWARFDIE dst_die;
3907 UniqueCStringMap<DWARFDIE> src_name_to_die;
3908 UniqueCStringMap<DWARFDIE> dst_name_to_die;
3909 UniqueCStringMap<DWARFDIE> src_name_to_die_artificial;
3910 UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial;
3911 for (src_die = src_class_die.GetFirstChild(); src_die.IsValid();
3912 src_die = src_die.GetSibling()) {
3913 if (src_die.Tag() == DW_TAG_subprogram) {
3914 // Make sure this is a declaration and not a concrete instance by looking
3915 // for DW_AT_declaration set to 1. Sometimes concrete function instances
3916 // are placed inside the class definitions and shouldn't be included in
3917 // the list of things are are tracking here.
3918 if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3919 const char *src_name = src_die.GetMangledName();
3920 if (src_name) {
3921 ConstString src_const_name(src_name);
3922 if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3923 src_name_to_die_artificial.Append(src_const_name, src_die);
3924 else
3925 src_name_to_die.Append(src_const_name, src_die);
3926 }
3927 }
3928 }
3929 }
3930 for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid();
3931 dst_die = dst_die.GetSibling()) {
3932 if (dst_die.Tag() == DW_TAG_subprogram) {
3933 // Make sure this is a declaration and not a concrete instance by looking
3934 // for DW_AT_declaration set to 1. Sometimes concrete function instances
3935 // are placed inside the class definitions and shouldn't be included in
3936 // the list of things are are tracking here.
3937 if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3938 const char *dst_name = dst_die.GetMangledName();
3939 if (dst_name) {
3940 ConstString dst_const_name(dst_name);
3941 if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3942 dst_name_to_die_artificial.Append(dst_const_name, dst_die);
3943 else
3944 dst_name_to_die.Append(dst_const_name, dst_die);
3945 }
3946 }
3947 }
3948 }
3949 const uint32_t src_size = src_name_to_die.GetSize();
3950 const uint32_t dst_size = dst_name_to_die.GetSize();
3951 Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO |
3952 // DWARF_LOG_TYPE_COMPLETION));
3953
3954 // Is everything kosher so we can go through the members at top speed?
3955 bool fast_path = true;
3956
3957 if (src_size != dst_size) {
3958 if (src_size != 0 && dst_size != 0) {
3959 if (log)
3960 log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, "
3961 "but they didn't have the same size (src=%d, dst=%d)",
3962 src_class_die.GetOffset(), dst_class_die.GetOffset(),
3963 src_size, dst_size);
3964 }
3965
3966 fast_path = false;
3967 }
3968
3969 uint32_t idx;
3970
3971 if (fast_path) {
3972 for (idx = 0; idx < src_size; ++idx) {
3973 src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
3974 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3975
3976 if (src_die.Tag() != dst_die.Tag()) {
3977 if (log)
3978 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3979 "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)",
3980 src_class_die.GetOffset(), dst_class_die.GetOffset(),
3981 src_die.GetOffset(), src_die.GetTagAsCString(),
3982 dst_die.GetOffset(), dst_die.GetTagAsCString());
3983 fast_path = false;
3984 }
3985
3986 const char *src_name = src_die.GetMangledName();
3987 const char *dst_name = dst_die.GetMangledName();
3988
3989 // Make sure the names match
3990 if (src_name == dst_name || (strcmp(src_name, dst_name) == 0))
3991 continue;
3992
3993 if (log)
3994 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3995 "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)",
3996 src_class_die.GetOffset(), dst_class_die.GetOffset(),
3997 src_die.GetOffset(), src_name, dst_die.GetOffset(),
3998 dst_name);
3999
4000 fast_path = false;
4001 }
4002 }
4003
4004 DWARFASTParserClang *src_dwarf_ast_parser =
4005 (DWARFASTParserClang *)src_die.GetDWARFParser();
4006 DWARFASTParserClang *dst_dwarf_ast_parser =
4007 (DWARFASTParserClang *)dst_die.GetDWARFParser();
4008
4009 // Now do the work of linking the DeclContexts and Types.
4010 if (fast_path) {
4011 // We can do this quickly. Just run across the tables index-for-index since
4012 // we know each node has matching names and tags.
4013 for (idx = 0; idx < src_size; ++idx) {
4014 src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
4015 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
4016
4017 clang::DeclContext *src_decl_ctx =
4018 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
4019 if (src_decl_ctx) {
4020 if (log)
4021 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
4022 static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
4023 dst_die.GetOffset());
4024 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
4025 } else {
4026 if (log)
4027 log->Printf("warning: tried to unique decl context from 0x%8.8x for "
4028 "0x%8.8x, but none was found",
4029 src_die.GetOffset(), dst_die.GetOffset());
4030 }
4031
4032 Type *src_child_type =
4033 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
4034 if (src_child_type) {
4035 if (log)
4036 log->Printf(
4037 "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x",
4038 static_cast<void *>(src_child_type), src_child_type->GetID(),
4039 src_die.GetOffset(), dst_die.GetOffset());
4040 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
4041 } else {
4042 if (log)
4043 log->Printf("warning: tried to unique lldb_private::Type from "
4044 "0x%8.8x for 0x%8.8x, but none was found",
4045 src_die.GetOffset(), dst_die.GetOffset());
4046 }
4047 }
4048 } else {
4049 // We must do this slowly. For each member of the destination, look
4050 // up a member in the source with the same name, check its tag, and
4051 // unique them if everything matches up. Report failures.
4052
4053 if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) {
4054 src_name_to_die.Sort();
4055
4056 for (idx = 0; idx < dst_size; ++idx) {
4057 ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx);
4058 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
4059 src_die = src_name_to_die.Find(dst_name, DWARFDIE());
4060
4061 if (src_die && (src_die.Tag() == dst_die.Tag())) {
4062 clang::DeclContext *src_decl_ctx =
4063 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
4064 if (src_decl_ctx) {
4065 if (log)
4066 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
4067 static_cast<void *>(src_decl_ctx),
4068 src_die.GetOffset(), dst_die.GetOffset());
4069 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
4070 } else {
4071 if (log)
4072 log->Printf("warning: tried to unique decl context from 0x%8.8x "
4073 "for 0x%8.8x, but none was found",
4074 src_die.GetOffset(), dst_die.GetOffset());
4075 }
4076
4077 Type *src_child_type =
4078 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
4079 if (src_child_type) {
4080 if (log)
4081 log->Printf("uniquing type %p (uid=0x%" PRIx64"l" "x"
4082 ") from 0x%8.8x for 0x%8.8x",
4083 static_cast<void *>(src_child_type),
4084 src_child_type->GetID(), src_die.GetOffset(),
4085 dst_die.GetOffset());
4086 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] =
4087 src_child_type;
4088 } else {
4089 if (log)
4090 log->Printf("warning: tried to unique lldb_private::Type from "
4091 "0x%8.8x for 0x%8.8x, but none was found",
4092 src_die.GetOffset(), dst_die.GetOffset());
4093 }
4094 } else {
4095 if (log)
4096 log->Printf("warning: couldn't find a match for 0x%8.8x",
4097 dst_die.GetOffset());
4098
4099 failures.Append(dst_die);
4100 }
4101 }
4102 }
4103 }
4104
4105 const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize();
4106 const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize();
4107
4108 if (src_size_artificial && dst_size_artificial) {
4109 dst_name_to_die_artificial.Sort();
4110
4111 for (idx = 0; idx < src_size_artificial; ++idx) {
4112 ConstString src_name_artificial =
4113 src_name_to_die_artificial.GetCStringAtIndex(idx);
4114 src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
4115 dst_die =
4116 dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE());
4117
4118 if (dst_die) {
4119 // Both classes have the artificial types, link them
4120 clang::DeclContext *src_decl_ctx =
4121 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
4122 if (src_decl_ctx) {
4123 if (log)
4124 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
4125 static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
4126 dst_die.GetOffset());
4127 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
4128 } else {
4129 if (log)
4130 log->Printf("warning: tried to unique decl context from 0x%8.8x "
4131 "for 0x%8.8x, but none was found",
4132 src_die.GetOffset(), dst_die.GetOffset());
4133 }
4134
4135 Type *src_child_type =
4136 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
4137 if (src_child_type) {
4138 if (log)
4139 log->Printf(
4140 "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x",
4141 static_cast<void *>(src_child_type), src_child_type->GetID(),
4142 src_die.GetOffset(), dst_die.GetOffset());
4143 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
4144 } else {
4145 if (log)
4146 log->Printf("warning: tried to unique lldb_private::Type from "
4147 "0x%8.8x for 0x%8.8x, but none was found",
4148 src_die.GetOffset(), dst_die.GetOffset());
4149 }
4150 }
4151 }
4152 }
4153
4154 if (dst_size_artificial) {
4155 for (idx = 0; idx < dst_size_artificial; ++idx) {
4156 ConstString dst_name_artificial =
4157 dst_name_to_die_artificial.GetCStringAtIndex(idx);
4158 dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
4159 if (log)
4160 log->Printf("warning: need to create artificial method for 0x%8.8x for "
4161 "method '%s'",
4162 dst_die.GetOffset(), dst_name_artificial.GetCString());
4163
4164 failures.Append(dst_die);
4165 }
4166 }
4167
4168 return (failures.Size() != 0);
4169}