Bug Summary

File:tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
Warning:line 1361, column 21
Value stored to 'class_symfile' is never read

Annotated Source Code

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~svn318882/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
790 clang::ClassTemplateSpecializationDecl
791 *class_specialization_decl =
792 m_ast.CreateClassTemplateSpecializationDecl(
793 decl_ctx, class_template_decl, tag_decl_kind,
794 template_param_infos);
795 clang_type = m_ast.CreateClassTemplateSpecializationType(
796 class_specialization_decl);
797 clang_type_was_created = true;
798
799 m_ast.SetMetadata(class_template_decl, metadata);
800 m_ast.SetMetadata(class_specialization_decl, metadata);
801 }
802 }
803
804 if (!clang_type_was_created) {
805 clang_type_was_created = true;
806 clang_type = m_ast.CreateRecordType(decl_ctx, accessibility,
807 type_name_cstr, tag_decl_kind,
808 class_language, &metadata);
809 }
810 }
811
812 // Store a forward declaration to this class type in case any
813 // parameters in any class methods need it for the clang
814 // types for function prototypes.
815 LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die);
816 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str,
817 byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL),
818 Type::eEncodingIsUID, &decl, clang_type,
819 Type::eResolveStateForward));
820
821 type_sp->SetIsCompleteObjCClass(is_complete_objc_class);
822
823 // Add our type to the unique type map so we don't
824 // end up creating many copies of the same type over
825 // and over in the ASTContext for our module
826 unique_ast_entry_ap->m_type_sp = type_sp;
827 unique_ast_entry_ap->m_die = die;
828 unique_ast_entry_ap->m_declaration = unique_decl;
829 unique_ast_entry_ap->m_byte_size = byte_size;
830 dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename,
831 *unique_ast_entry_ap);
832
833 if (is_forward_declaration && die.HasChildren()) {
834 // Check to see if the DIE actually has a definition, some version of
835 // GCC will
836 // emit DIEs with DW_AT_declaration set to true, but yet still have
837 // subprogram,
838 // members, or inheritance, so we can't trust it
839 DWARFDIE child_die = die.GetFirstChild();
840 while (child_die) {
841 switch (child_die.Tag()) {
842 case DW_TAG_inheritance:
843 case DW_TAG_subprogram:
844 case DW_TAG_member:
845 case DW_TAG_APPLE_property:
846 case DW_TAG_class_type:
847 case DW_TAG_structure_type:
848 case DW_TAG_enumeration_type:
849 case DW_TAG_typedef:
850 case DW_TAG_union_type:
851 child_die.Clear();
852 is_forward_declaration = false;
853 break;
854 default:
855 child_die = child_die.GetSibling();
856 break;
857 }
858 }
859 }
860
861 if (!is_forward_declaration) {
862 // Always start the definition for a class type so that
863 // if the class has child classes or types that require
864 // the class to be created for use as their decl contexts
865 // the class will be ready to accept these child definitions.
866 if (die.HasChildren() == false) {
867 // No children for this struct/union/class, lets finish it
868 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) {
869 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
870 } else {
871 dwarf->GetObjectFile()->GetModule()->ReportError(
872 "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
873 "definition.\nPlease file a bug and attach the file at the "
874 "start of this error message",
875 die.GetOffset(), type_name_cstr);
876 }
877
878 if (tag == DW_TAG_structure_type) // this only applies in C
879 {
880 clang::RecordDecl *record_decl =
881 ClangASTContext::GetAsRecordDecl(clang_type);
882
883 if (record_decl) {
884 GetClangASTImporter().InsertRecordDecl(
885 record_decl, ClangASTImporter::LayoutInfo());
886 }
887 }
888 } else if (clang_type_was_created) {
889 // Start the definition if the class is not objective C since
890 // the underlying decls respond to isCompleteDefinition(). Objective
891 // C decls don't respond to isCompleteDefinition() so we can't
892 // start the declaration definition right away. For C++
893 // class/union/structs
894 // we want to start the definition in case the class is needed as
895 // the
896 // declaration context for a contained class or type without the
897 // need
898 // to complete that type..
899
900 if (class_language != eLanguageTypeObjC &&
901 class_language != eLanguageTypeObjC_plus_plus)
902 ClangASTContext::StartTagDeclarationDefinition(clang_type);
903
904 // Leave this as a forward declaration until we need
905 // to know the details of the type. lldb_private::Type
906 // will automatically call the SymbolFile virtual function
907 // "SymbolFileDWARF::CompleteType(Type *)"
908 // When the definition needs to be defined.
909 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 912, __extension__ __PRETTY_FUNCTION__))
910 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 912, __extension__ __PRETTY_FUNCTION__))
911 .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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 912, __extension__ __PRETTY_FUNCTION__))
912 "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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 912, __extension__ __PRETTY_FUNCTION__))
;
913 // Can't assume m_ast.GetSymbolFile() is actually a SymbolFileDWARF,
914 // it can be a
915 // SymbolFileDWARFDebugMap for Apple binaries.
916 dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] =
917 clang_type.GetOpaqueQualType();
918 dwarf->GetForwardDeclClangTypeToDie()
919 [ClangUtil::RemoveFastQualifiers(clang_type)
920 .GetOpaqueQualType()] = die.GetDIERef();
921 m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true);
922 }
923 }
924 } break;
925
926 case DW_TAG_enumeration_type: {
927 // Set a bit that lets us know that we are currently parsing this
928 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
929
930 bool is_scoped = false;
931 DWARFFormValue encoding_form;
932
933 const size_t num_attributes = die.GetAttributes(attributes);
934 if (num_attributes > 0) {
935 uint32_t i;
936
937 for (i = 0; i < num_attributes; ++i) {
938 attr = attributes.AttributeAtIndex(i);
939 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
940 switch (attr) {
941 case DW_AT_decl_file:
942 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
943 form_value.Unsigned()));
944 break;
945 case DW_AT_decl_line:
946 decl.SetLine(form_value.Unsigned());
947 break;
948 case DW_AT_decl_column:
949 decl.SetColumn(form_value.Unsigned());
950 break;
951 case DW_AT_name:
952 type_name_cstr = form_value.AsCString();
953 type_name_const_str.SetCString(type_name_cstr);
954 break;
955 case DW_AT_type:
956 encoding_form = form_value;
957 break;
958 case DW_AT_byte_size:
959 byte_size = form_value.Unsigned();
960 break;
961 case DW_AT_accessibility:
962 break; // accessibility =
963 // DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
964 case DW_AT_declaration:
965 is_forward_declaration = form_value.Boolean();
966 break;
967 case DW_AT_enum_class:
968 is_scoped = form_value.Boolean();
969 break;
970 case DW_AT_allocated:
971 case DW_AT_associated:
972 case DW_AT_bit_stride:
973 case DW_AT_byte_stride:
974 case DW_AT_data_location:
975 case DW_AT_description:
976 case DW_AT_start_scope:
977 case DW_AT_visibility:
978 case DW_AT_specification:
979 case DW_AT_abstract_origin:
980 case DW_AT_sibling:
981 break;
982 }
983 }
984 }
985
986 if (is_forward_declaration) {
987 type_sp = ParseTypeFromDWO(die, log);
988 if (type_sp)
989 return type_sp;
990
991 DWARFDeclContext die_decl_ctx;
992 die.GetDWARFDeclContext(die_decl_ctx);
993
994 type_sp =
995 dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx);
996
997 if (!type_sp) {
998 SymbolFileDWARFDebugMap *debug_map_symfile =
999 dwarf->GetDebugMapSymfile();
1000 if (debug_map_symfile) {
1001 // We weren't able to find a full declaration in
1002 // this DWARF, see if we have a declaration anywhere
1003 // else...
1004 type_sp =
1005 debug_map_symfile->FindDefinitionTypeForDWARFDeclContext(
1006 die_decl_ctx);
1007 }
1008 }
1009
1010 if (type_sp) {
1011 if (log) {
1012 dwarf->GetObjectFile()->GetModule()->LogMessage(
1013 log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
1014 "forward declaration, complete type is 0x%8.8" PRIx64"l" "x",
1015 static_cast<void *>(this), die.GetOffset(),
1016 DW_TAG_value_to_name(tag), type_name_cstr,
1017 type_sp->GetID());
1018 }
1019
1020 // We found a real definition for this type elsewhere
1021 // so lets use it and cache the fact that we found
1022 // a complete type for this die
1023 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1024 clang::DeclContext *defn_decl_ctx =
1025 GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE(
1026 DIERef(type_sp->GetID(), dwarf)));
1027 if (defn_decl_ctx)
1028 LinkDeclContextToDIE(defn_decl_ctx, die);
1029 return type_sp;
1030 }
1031 }
1032 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1033 DW_TAG_value_to_name(tag), type_name_cstr);
1034
1035 CompilerType enumerator_clang_type;
1036 clang_type.SetCompilerType(
1037 &m_ast,
1038 dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE()));
1039 if (!clang_type) {
1040 if (encoding_form.IsValid()) {
1041 Type *enumerator_type =
1042 dwarf->ResolveTypeUID(DIERef(encoding_form));
1043 if (enumerator_type)
1044 enumerator_clang_type = enumerator_type->GetFullCompilerType();
1045 }
1046
1047 if (!enumerator_clang_type) {
1048 if (byte_size > 0) {
1049 enumerator_clang_type =
1050 m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize(
1051 NULL__null, DW_ATE_signed, byte_size * 8);
1052 } else {
1053 enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt);
1054 }
1055 }
1056
1057 clang_type = m_ast.CreateEnumerationType(
1058 type_name_cstr, GetClangDeclContextContainingDIE(die, nullptr),
1059 decl, enumerator_clang_type, is_scoped);
1060 } else {
1061 enumerator_clang_type =
1062 m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType());
1063 }
1064
1065 LinkDeclContextToDIE(
1066 ClangASTContext::GetDeclContextForType(clang_type), die);
1067
1068 type_sp.reset(new Type(
1069 die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null,
1070 DIERef(encoding_form).GetUID(dwarf), Type::eEncodingIsUID, &decl,
1071 clang_type, Type::eResolveStateForward));
1072
1073 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) {
1074 if (die.HasChildren()) {
1075 SymbolContext cu_sc(die.GetLLDBCompileUnit());
1076 bool is_signed = false;
1077 enumerator_clang_type.IsIntegerType(is_signed);
1078 ParseChildEnumerators(cu_sc, clang_type, is_signed,
1079 type_sp->GetByteSize(), die);
1080 }
1081 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
1082 } else {
1083 dwarf->GetObjectFile()->GetModule()->ReportError(
1084 "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
1085 "definition.\nPlease file a bug and attach the file at the "
1086 "start of this error message",
1087 die.GetOffset(), type_name_cstr);
1088 }
1089 }
1090 } break;
1091
1092 case DW_TAG_inlined_subroutine:
1093 case DW_TAG_subprogram:
1094 case DW_TAG_subroutine_type: {
1095 // Set a bit that lets us know that we are currently parsing this
1096 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
1097
1098 DWARFFormValue type_die_form;
1099 bool is_variadic = false;
1100 bool is_inline = false;
1101 bool is_static = false;
1102 bool is_virtual = false;
1103 bool is_explicit = false;
1104 bool is_artificial = false;
1105 bool has_template_params = false;
1106 DWARFFormValue specification_die_form;
1107 DWARFFormValue abstract_origin_die_form;
1108 dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0);
1109
1110 unsigned type_quals = 0;
1111 clang::StorageClass storage =
1112 clang::SC_None; //, Extern, Static, PrivateExtern
1113
1114 const size_t num_attributes = die.GetAttributes(attributes);
1115 if (num_attributes > 0) {
1116 uint32_t i;
1117 for (i = 0; i < num_attributes; ++i) {
1118 attr = attributes.AttributeAtIndex(i);
1119 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1120 switch (attr) {
1121 case DW_AT_decl_file:
1122 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
1123 form_value.Unsigned()));
1124 break;
1125 case DW_AT_decl_line:
1126 decl.SetLine(form_value.Unsigned());
1127 break;
1128 case DW_AT_decl_column:
1129 decl.SetColumn(form_value.Unsigned());
1130 break;
1131 case DW_AT_name:
1132 type_name_cstr = form_value.AsCString();
1133 type_name_const_str.SetCString(type_name_cstr);
1134 break;
1135
1136 case DW_AT_linkage_name:
1137 case DW_AT_MIPS_linkage_name:
1138 break; // mangled =
1139 // form_value.AsCString(&dwarf->get_debug_str_data());
1140 // break;
1141 case DW_AT_type:
1142 type_die_form = form_value;
1143 break;
1144 case DW_AT_accessibility:
1145 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
1146 break;
1147 case DW_AT_declaration:
1148 break; // is_forward_declaration = form_value.Boolean(); break;
1149 case DW_AT_inline:
1150 is_inline = form_value.Boolean();
1151 break;
1152 case DW_AT_virtuality:
1153 is_virtual = form_value.Boolean();
1154 break;
1155 case DW_AT_explicit:
1156 is_explicit = form_value.Boolean();
1157 break;
1158 case DW_AT_artificial:
1159 is_artificial = form_value.Boolean();
1160 break;
1161
1162 case DW_AT_external:
1163 if (form_value.Unsigned()) {
1164 if (storage == clang::SC_None)
1165 storage = clang::SC_Extern;
1166 else
1167 storage = clang::SC_PrivateExtern;
1168 }
1169 break;
1170
1171 case DW_AT_specification:
1172 specification_die_form = form_value;
1173 break;
1174
1175 case DW_AT_abstract_origin:
1176 abstract_origin_die_form = form_value;
1177 break;
1178
1179 case DW_AT_object_pointer:
1180 object_pointer_die_offset = form_value.Reference();
1181 break;
1182
1183 case DW_AT_allocated:
1184 case DW_AT_associated:
1185 case DW_AT_address_class:
1186 case DW_AT_calling_convention:
1187 case DW_AT_data_location:
1188 case DW_AT_elemental:
1189 case DW_AT_entry_pc:
1190 case DW_AT_frame_base:
1191 case DW_AT_high_pc:
1192 case DW_AT_low_pc:
1193 case DW_AT_prototyped:
1194 case DW_AT_pure:
1195 case DW_AT_ranges:
1196 case DW_AT_recursive:
1197 case DW_AT_return_addr:
1198 case DW_AT_segment:
1199 case DW_AT_start_scope:
1200 case DW_AT_static_link:
1201 case DW_AT_trampoline:
1202 case DW_AT_visibility:
1203 case DW_AT_vtable_elem_location:
1204 case DW_AT_description:
1205 case DW_AT_sibling:
1206 break;
1207 }
1208 }
1209 }
1210 }
1211
1212 std::string object_pointer_name;
1213 if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) {
1214 DWARFDIE object_pointer_die = die.GetDIE(object_pointer_die_offset);
1215 if (object_pointer_die) {
1216 const char *object_pointer_name_cstr = object_pointer_die.GetName();
1217 if (object_pointer_name_cstr)
1218 object_pointer_name = object_pointer_name_cstr;
1219 }
1220 }
1221
1222 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1223 DW_TAG_value_to_name(tag), type_name_cstr);
1224
1225 CompilerType return_clang_type;
1226 Type *func_type = NULL__null;
1227
1228 if (type_die_form.IsValid())
1229 func_type = dwarf->ResolveTypeUID(DIERef(type_die_form));
1230
1231 if (func_type)
1232 return_clang_type = func_type->GetForwardCompilerType();
1233 else
1234 return_clang_type = m_ast.GetBasicType(eBasicTypeVoid);
1235
1236 std::vector<CompilerType> function_param_types;
1237 std::vector<clang::ParmVarDecl *> function_param_decls;
1238
1239 // Parse the function children for the parameters
1240
1241 DWARFDIE decl_ctx_die;
1242 clang::DeclContext *containing_decl_ctx =
1243 GetClangDeclContextContainingDIE(die, &decl_ctx_die);
1244 const clang::Decl::Kind containing_decl_kind =
1245 containing_decl_ctx->getDeclKind();
1246
1247 bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind);
1248 // Start off static. This will be set to false in
1249 // ParseChildParameters(...)
1250 // if we find a "this" parameters as the first parameter
1251 if (is_cxx_method) {
1252 is_static = true;
1253 }
1254
1255 if (die.HasChildren()) {
1256 bool skip_artificial = true;
1257 ParseChildParameters(sc, containing_decl_ctx, die, skip_artificial,
1258 is_static, is_variadic, has_template_params,
1259 function_param_types, function_param_decls,
1260 type_quals);
1261 }
1262
1263 bool ignore_containing_context = false;
1264 // Check for templatized class member functions. If we had any
1265 // DW_TAG_template_type_parameter
1266 // or DW_TAG_template_value_parameter the DW_TAG_subprogram DIE, then we
1267 // can't let this become
1268 // a method in a class. Why? Because templatized functions are only
1269 // emitted if one of the
1270 // templatized methods is used in the current compile unit and we will
1271 // end up with classes
1272 // that may or may not include these member functions and this means one
1273 // class won't match another
1274 // class definition and it affects our ability to use a class in the
1275 // clang expression parser. So
1276 // for the greater good, we currently must not allow any template member
1277 // functions in a class definition.
1278 if (is_cxx_method && has_template_params) {
1279 ignore_containing_context = true;
1280 is_cxx_method = false;
1281 }
1282
1283 // clang_type will get the function prototype clang type after this call
1284 clang_type = m_ast.CreateFunctionType(
1285 return_clang_type, function_param_types.data(),
1286 function_param_types.size(), is_variadic, type_quals);
1287
1288 if (type_name_cstr) {
1289 bool type_handled = false;
1290 if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) {
1291 ObjCLanguage::MethodName objc_method(type_name_cstr, true);
1292 if (objc_method.IsValid(true)) {
1293 CompilerType class_opaque_type;
1294 ConstString class_name(objc_method.GetClassName());
1295 if (class_name) {
1296 TypeSP complete_objc_class_type_sp(
1297 dwarf->FindCompleteObjCDefinitionTypeForDIE(
1298 DWARFDIE(), class_name, false));
1299
1300 if (complete_objc_class_type_sp) {
1301 CompilerType type_clang_forward_type =
1302 complete_objc_class_type_sp->GetForwardCompilerType();
1303 if (ClangASTContext::IsObjCObjectOrInterfaceType(
1304 type_clang_forward_type))
1305 class_opaque_type = type_clang_forward_type;
1306 }
1307 }
1308
1309 if (class_opaque_type) {
1310 // If accessibility isn't set to anything valid, assume public
1311 // for
1312 // now...
1313 if (accessibility == eAccessNone)
1314 accessibility = eAccessPublic;
1315
1316 clang::ObjCMethodDecl *objc_method_decl =
1317 m_ast.AddMethodToObjCObjectType(
1318 class_opaque_type, type_name_cstr, clang_type,
1319 accessibility, is_artificial, is_variadic);
1320 type_handled = objc_method_decl != NULL__null;
1321 if (type_handled) {
1322 LinkDeclContextToDIE(
1323 ClangASTContext::GetAsDeclContext(objc_method_decl), die);
1324 m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID());
1325 } else {
1326 dwarf->GetObjectFile()->GetModule()->ReportError(
1327 "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), "
1328 "please file a bug and attach the file at the start of "
1329 "this error message",
1330 die.GetOffset(), tag, DW_TAG_value_to_name(tag));
1331 }
1332 }
1333 } else if (is_cxx_method) {
1334 // Look at the parent of this DIE and see if is is
1335 // a class or struct and see if this is actually a
1336 // C++ method
1337 Type *class_type = dwarf->ResolveType(decl_ctx_die);
1338 if (class_type) {
1339 bool alternate_defn = false;
1340 if (class_type->GetID() != decl_ctx_die.GetID() ||
1341 decl_ctx_die.GetContainingDWOModuleDIE()) {
1342 alternate_defn = true;
1343
1344 // We uniqued the parent class of this function to another
1345 // class
1346 // so we now need to associate all dies under "decl_ctx_die"
1347 // to
1348 // DIEs in the DIE for "class_type"...
1349 SymbolFileDWARF *class_symfile = NULL__null;
1350 DWARFDIE class_type_die;
1351
1352 SymbolFileDWARFDebugMap *debug_map_symfile =
1353 dwarf->GetDebugMapSymfile();
1354 if (debug_map_symfile) {
1355 class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(
1356 SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(
1357 class_type->GetID()));
1358 class_type_die = class_symfile->DebugInfo()->GetDIE(
1359 DIERef(class_type->GetID(), dwarf));
1360 } else {
1361 class_symfile = dwarf;
Value stored to 'class_symfile' is never read
1362 class_type_die = dwarf->DebugInfo()->GetDIE(
1363 DIERef(class_type->GetID(), dwarf));
1364 }
1365 if (class_type_die) {
1366 DWARFDIECollection failures;
1367
1368 CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die,
1369 class_type, failures);
1370
1371 // FIXME do something with these failures that's smarter
1372 // than
1373 // just dropping them on the ground. Unfortunately classes
1374 // don't
1375 // like having stuff added to them after their definitions
1376 // are
1377 // complete...
1378
1379 type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1380 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) {
1381 type_sp = type_ptr->shared_from_this();
1382 break;
1383 }
1384 }
1385 }
1386
1387 if (specification_die_form.IsValid()) {
1388 // We have a specification which we are going to base our
1389 // function
1390 // prototype off of, so we need this type to be completed so
1391 // that the
1392 // m_die_to_decl_ctx for the method in the specification has a
1393 // valid
1394 // clang decl context.
1395 class_type->GetForwardCompilerType();
1396 // If we have a specification, then the function type should
1397 // have been
1398 // made with the specification and not with this die.
1399 DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE(
1400 DIERef(specification_die_form));
1401 clang::DeclContext *spec_clang_decl_ctx =
1402 GetClangDeclContextForDIE(spec_die);
1403 if (spec_clang_decl_ctx) {
1404 LinkDeclContextToDIE(spec_clang_decl_ctx, die);
1405 } else {
1406 dwarf->GetObjectFile()->GetModule()->ReportWarning(
1407 "0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8" PRIx64"l" "x"
1408 ") has no decl\n",
1409 die.GetID(), specification_die_form.Reference());
1410 }
1411 type_handled = true;
1412 } else if (abstract_origin_die_form.IsValid()) {
1413 // We have a specification which we are going to base our
1414 // function
1415 // prototype off of, so we need this type to be completed so
1416 // that the
1417 // m_die_to_decl_ctx for the method in the abstract origin has
1418 // a valid
1419 // clang decl context.
1420 class_type->GetForwardCompilerType();
1421
1422 DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE(
1423 DIERef(abstract_origin_die_form));
1424 clang::DeclContext *abs_clang_decl_ctx =
1425 GetClangDeclContextForDIE(abs_die);
1426 if (abs_clang_decl_ctx) {
1427 LinkDeclContextToDIE(abs_clang_decl_ctx, die);
1428 } else {
1429 dwarf->GetObjectFile()->GetModule()->ReportWarning(
1430 "0x%8.8" PRIx64"l" "x" ": DW_AT_abstract_origin(0x%8.8" PRIx64"l" "x"
1431 ") has no decl\n",
1432 die.GetID(), abstract_origin_die_form.Reference());
1433 }
1434 type_handled = true;
1435 } else {
1436 CompilerType class_opaque_type =
1437 class_type->GetForwardCompilerType();
1438 if (ClangASTContext::IsCXXClassType(class_opaque_type)) {
1439 if (class_opaque_type.IsBeingDefined() || alternate_defn) {
1440 if (!is_static && !die.HasChildren()) {
1441 // We have a C++ member function with no children (this
1442 // pointer!)
1443 // and clang will get mad if we try and make a function
1444 // that isn't
1445 // well formed in the DWARF, so we will just skip it...
1446 type_handled = true;
1447 } else {
1448 bool add_method = true;
1449 if (alternate_defn) {
1450 // If an alternate definition for the class exists,
1451 // then add the method only if an
1452 // equivalent is not already present.
1453 clang::CXXRecordDecl *record_decl =
1454 m_ast.GetAsCXXRecordDecl(
1455 class_opaque_type.GetOpaqueQualType());
1456 if (record_decl) {
1457 for (auto method_iter = record_decl->method_begin();
1458 method_iter != record_decl->method_end();
1459 method_iter++) {
1460 clang::CXXMethodDecl *method_decl = *method_iter;
1461 if (method_decl->getNameInfo().getAsString() ==
1462 std::string(type_name_cstr)) {
1463 if (method_decl->getType() ==
1464 ClangUtil::GetQualType(clang_type)) {
1465 add_method = false;
1466 LinkDeclContextToDIE(
1467 ClangASTContext::GetAsDeclContext(
1468 method_decl),
1469 die);
1470 type_handled = true;
1471
1472 break;
1473 }
1474 }
1475 }
1476 }
1477 }
1478
1479 if (add_method) {
1480 llvm::PrettyStackTraceFormat stack_trace(
1481 "SymbolFileDWARF::ParseType() is adding a method "
1482 "%s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s",
1483 type_name_cstr,
1484 class_type->GetName().GetCString(), die.GetID(),
1485 dwarf->GetObjectFile()
1486 ->GetFileSpec()
1487 .GetPath()
1488 .c_str());
1489
1490 const bool is_attr_used = false;
1491 // Neither GCC 4.2 nor clang++ currently set a valid
1492 // accessibility
1493 // in the DWARF for C++ methods... Default to public
1494 // for now...
1495 if (accessibility == eAccessNone)
1496 accessibility = eAccessPublic;
1497
1498 clang::CXXMethodDecl *cxx_method_decl =
1499 m_ast.AddMethodToCXXRecordType(
1500 class_opaque_type.GetOpaqueQualType(),
1501 type_name_cstr, clang_type, accessibility,
1502 is_virtual, is_static, is_inline, is_explicit,
1503 is_attr_used, is_artificial);
1504
1505 type_handled = cxx_method_decl != NULL__null;
1506
1507 if (type_handled) {
1508 LinkDeclContextToDIE(
1509 ClangASTContext::GetAsDeclContext(
1510 cxx_method_decl),
1511 die);
1512
1513 ClangASTMetadata metadata;
1514 metadata.SetUserID(die.GetID());
1515
1516 if (!object_pointer_name.empty()) {
1517 metadata.SetObjectPtrName(
1518 object_pointer_name.c_str());
1519 if (log)
1520 log->Printf(
1521 "Setting object pointer name: %s on method "
1522 "object %p.\n",
1523 object_pointer_name.c_str(),
1524 static_cast<void *>(cxx_method_decl));
1525 }
1526 m_ast.SetMetadata(cxx_method_decl, metadata);
1527 } else {
1528 ignore_containing_context = true;
1529 }
1530 }
1531 }
1532 } else {
1533 // We were asked to parse the type for a method in a
1534 // class, yet the
1535 // class hasn't been asked to complete itself through the
1536 // clang::ExternalASTSource protocol, so we need to just
1537 // have the
1538 // class complete itself and do things the right way, then
1539 // our
1540 // DIE should then have an entry in the
1541 // dwarf->GetDIEToType() map. First
1542 // we need to modify the dwarf->GetDIEToType() so it
1543 // doesn't think we are
1544 // trying to parse this DIE anymore...
1545 dwarf->GetDIEToType()[die.GetDIE()] = NULL__null;
1546
1547 // Now we get the full type to force our class type to
1548 // complete itself
1549 // using the clang::ExternalASTSource protocol which will
1550 // parse all
1551 // base classes and all methods (including the method for
1552 // this DIE).
1553 class_type->GetFullCompilerType();
1554
1555 // The type for this DIE should have been filled in the
1556 // function call above
1557 type_ptr = dwarf->GetDIEToType()[die.GetDIE()];
1558 if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) {
1559 type_sp = type_ptr->shared_from_this();
1560 break;
1561 }
1562
1563 // FIXME This is fixing some even uglier behavior but we
1564 // really need to
1565 // uniq the methods of each class as well as the class
1566 // itself.
1567 // <rdar://problem/11240464>
1568 type_handled = true;
1569 }
1570 }
1571 }
1572 }
1573 }
1574 }
1575
1576 if (!type_handled) {
1577 clang::FunctionDecl *function_decl = nullptr;
1578
1579 if (abstract_origin_die_form.IsValid()) {
1580 DWARFDIE abs_die =
1581 dwarf->DebugInfo()->GetDIE(DIERef(abstract_origin_die_form));
1582
1583 SymbolContext sc;
1584
1585 if (dwarf->ResolveType(abs_die)) {
1586 function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(
1587 GetCachedClangDeclContextForDIE(abs_die));
1588
1589 if (function_decl) {
1590 LinkDeclContextToDIE(function_decl, die);
1591 }
1592 }
1593 }
1594
1595 if (!function_decl) {
1596 // We just have a function that isn't part of a class
1597 function_decl = m_ast.CreateFunctionDeclaration(
1598 ignore_containing_context ? m_ast.GetTranslationUnitDecl()
1599 : containing_decl_ctx,
1600 type_name_cstr, clang_type, storage, is_inline);
1601
1602 if (has_template_params) {
1603 ClangASTContext::TemplateParameterInfos template_param_infos;
1604 ParseTemplateParameterInfos(die, template_param_infos);
1605 clang::FunctionTemplateDecl *func_template_decl =
1606 m_ast.CreateFunctionTemplateDecl(
1607 containing_decl_ctx, function_decl, type_name_cstr,
1608 template_param_infos);
1609 m_ast.CreateFunctionTemplateSpecializationInfo(
1610 function_decl, func_template_decl, template_param_infos);
1611 }
1612
1613 lldbassert(function_decl)lldb_private::lldb_assert(function_decl, "function_decl", __FUNCTION__
, "/build/llvm-toolchain-snapshot-6.0~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 1613)
;
1614
1615 if (function_decl) {
1616 LinkDeclContextToDIE(function_decl, die);
1617
1618 if (!function_param_decls.empty())
1619 m_ast.SetFunctionParameters(function_decl,
1620 &function_param_decls.front(),
1621 function_param_decls.size());
1622
1623 ClangASTMetadata metadata;
1624 metadata.SetUserID(die.GetID());
1625
1626 if (!object_pointer_name.empty()) {
1627 metadata.SetObjectPtrName(object_pointer_name.c_str());
1628 if (log)
1629 log->Printf("Setting object pointer name: %s on function "
1630 "object %p.",
1631 object_pointer_name.c_str(),
1632 static_cast<void *>(function_decl));
1633 }
1634 m_ast.SetMetadata(function_decl, metadata);
1635 }
1636 }
1637 }
1638 }
1639 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 0, NULL__null,
1640 LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingIsUID, &decl,
1641 clang_type, Type::eResolveStateFull));
1642 assert(type_sp.get())(static_cast <bool> (type_sp.get()) ? void (0) : __assert_fail
("type_sp.get()", "/build/llvm-toolchain-snapshot-6.0~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 1642, __extension__ __PRETTY_FUNCTION__))
;
1643 } break;
1644
1645 case DW_TAG_array_type: {
1646 // Set a bit that lets us know that we are currently parsing this
1647 dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1);
1648
1649 DWARFFormValue type_die_form;
1650 int64_t first_index = 0;
1651 uint32_t byte_stride = 0;
1652 uint32_t bit_stride = 0;
1653 bool is_vector = false;
1654 const size_t num_attributes = die.GetAttributes(attributes);
1655
1656 if (num_attributes > 0) {
1657 uint32_t i;
1658 for (i = 0; i < num_attributes; ++i) {
1659 attr = attributes.AttributeAtIndex(i);
1660 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1661 switch (attr) {
1662 case DW_AT_decl_file:
1663 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
1664 form_value.Unsigned()));
1665 break;
1666 case DW_AT_decl_line:
1667 decl.SetLine(form_value.Unsigned());
1668 break;
1669 case DW_AT_decl_column:
1670 decl.SetColumn(form_value.Unsigned());
1671 break;
1672 case DW_AT_name:
1673 type_name_cstr = form_value.AsCString();
1674 type_name_const_str.SetCString(type_name_cstr);
1675 break;
1676
1677 case DW_AT_type:
1678 type_die_form = form_value;
1679 break;
1680 case DW_AT_byte_size:
1681 break; // byte_size = form_value.Unsigned(); break;
1682 case DW_AT_byte_stride:
1683 byte_stride = form_value.Unsigned();
1684 break;
1685 case DW_AT_bit_stride:
1686 bit_stride = form_value.Unsigned();
1687 break;
1688 case DW_AT_GNU_vector:
1689 is_vector = form_value.Boolean();
1690 break;
1691 case DW_AT_accessibility:
1692 break; // accessibility =
1693 // DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
1694 case DW_AT_declaration:
1695 break; // is_forward_declaration = form_value.Boolean(); break;
1696 case DW_AT_allocated:
1697 case DW_AT_associated:
1698 case DW_AT_data_location:
1699 case DW_AT_description:
1700 case DW_AT_ordering:
1701 case DW_AT_start_scope:
1702 case DW_AT_visibility:
1703 case DW_AT_specification:
1704 case DW_AT_abstract_origin:
1705 case DW_AT_sibling:
1706 break;
1707 }
1708 }
1709 }
1710
1711 DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(),
1712 DW_TAG_value_to_name(tag), type_name_cstr);
1713
1714 DIERef type_die_ref(type_die_form);
1715 Type *element_type = dwarf->ResolveTypeUID(type_die_ref);
1716
1717 if (element_type) {
1718 std::vector<uint64_t> element_orders;
1719 ParseChildArrayInfo(sc, die, first_index, element_orders,
1720 byte_stride, bit_stride);
1721 if (byte_stride == 0 && bit_stride == 0)
1722 byte_stride = element_type->GetByteSize();
1723 CompilerType array_element_type =
1724 element_type->GetForwardCompilerType();
1725
1726 if (ClangASTContext::IsCXXClassType(array_element_type) &&
1727 array_element_type.GetCompleteType() == false) {
1728 ModuleSP module_sp = die.GetModule();
1729 if (module_sp) {
1730 if (die.GetCU()->GetProducer() ==
1731 DWARFCompileUnit::eProducerClang)
1732 module_sp->ReportError(
1733 "DWARF DW_TAG_array_type DIE at 0x%8.8x has a "
1734 "class/union/struct element type DIE 0x%8.8x that is a "
1735 "forward declaration, not a complete definition.\nTry "
1736 "compiling the source file with -fno-limit-debug-info or "
1737 "disable -gmodule",
1738 die.GetOffset(), type_die_ref.die_offset);
1739 else
1740 module_sp->ReportError(
1741 "DWARF DW_TAG_array_type DIE at 0x%8.8x has a "
1742 "class/union/struct element type DIE 0x%8.8x that is a "
1743 "forward declaration, not a complete definition.\nPlease "
1744 "file a bug against the compiler and include the "
1745 "preprocessed output for %s",
1746 die.GetOffset(), type_die_ref.die_offset,
1747 die.GetLLDBCompileUnit()
1748 ? die.GetLLDBCompileUnit()->GetPath().c_str()
1749 : "the source file");
1750 }
1751
1752 // We have no choice other than to pretend that the element class
1753 // type
1754 // is complete. If we don't do this, clang will crash when trying
1755 // to layout the class. Since we provide layout assistance, all
1756 // ivars in this class and other classes will be fine, this is
1757 // the best we can do short of crashing.
1758 if (ClangASTContext::StartTagDeclarationDefinition(
1759 array_element_type)) {
1760 ClangASTContext::CompleteTagDeclarationDefinition(
1761 array_element_type);
1762 } else {
1763 module_sp->ReportError("DWARF DIE at 0x%8.8x was not able to "
1764 "start its definition.\nPlease file a "
1765 "bug and attach the file at the start "
1766 "of this error message",
1767 type_die_ref.die_offset);
1768 }
1769 }
1770
1771 uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
1772 if (element_orders.size() > 0) {
1773 uint64_t num_elements = 0;
1774 std::vector<uint64_t>::const_reverse_iterator pos;
1775 std::vector<uint64_t>::const_reverse_iterator end =
1776 element_orders.rend();
1777 for (pos = element_orders.rbegin(); pos != end; ++pos) {
1778 num_elements = *pos;
1779 clang_type = m_ast.CreateArrayType(array_element_type,
1780 num_elements, is_vector);
1781 array_element_type = clang_type;
1782 array_element_bit_stride =
1783 num_elements ? array_element_bit_stride * num_elements
1784 : array_element_bit_stride;
1785 }
1786 } else {
1787 clang_type =
1788 m_ast.CreateArrayType(array_element_type, 0, is_vector);
1789 }
1790 ConstString empty_name;
1791 type_sp.reset(new Type(
1792 die.GetID(), dwarf, empty_name, array_element_bit_stride / 8,
1793 NULL__null, DIERef(type_die_form).GetUID(dwarf), Type::eEncodingIsUID,
1794 &decl, clang_type, Type::eResolveStateFull));
1795 type_sp->SetEncodingType(element_type);
1796 }
1797 }
1798 } break;
1799
1800 case DW_TAG_ptr_to_member_type: {
1801 DWARFFormValue type_die_form;
1802 DWARFFormValue containing_type_die_form;
1803
1804 const size_t num_attributes = die.GetAttributes(attributes);
1805
1806 if (num_attributes > 0) {
1807 uint32_t i;
1808 for (i = 0; i < num_attributes; ++i) {
1809 attr = attributes.AttributeAtIndex(i);
1810 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1811 switch (attr) {
1812 case DW_AT_type:
1813 type_die_form = form_value;
1814 break;
1815 case DW_AT_containing_type:
1816 containing_type_die_form = form_value;
1817 break;
1818 }
1819 }
1820 }
1821
1822 Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form));
1823 Type *class_type =
1824 dwarf->ResolveTypeUID(DIERef(containing_type_die_form));
1825
1826 CompilerType pointee_clang_type =
1827 pointee_type->GetForwardCompilerType();
1828 CompilerType class_clang_type = class_type->GetLayoutCompilerType();
1829
1830 clang_type = ClangASTContext::CreateMemberPointerType(
1831 class_clang_type, pointee_clang_type);
1832
1833 byte_size = clang_type.GetByteSize(nullptr);
1834
1835 type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str,
1836 byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL),
1837 Type::eEncodingIsUID, NULL__null, clang_type,
1838 Type::eResolveStateForward));
1839 }
1840
1841 break;
1842 }
1843 default:
1844 dwarf->GetObjectFile()->GetModule()->ReportError(
1845 "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and "
1846 "attach the file at the start of this error message",
1847 die.GetOffset(), tag, DW_TAG_value_to_name(tag));
1848 break;
1849 }
1850
1851 if (type_sp.get()) {
1852 DWARFDIE sc_parent_die =
1853 SymbolFileDWARF::GetParentSymbolContextDIE(die);
1854 dw_tag_t sc_parent_tag = sc_parent_die.Tag();
1855
1856 SymbolContextScope *symbol_context_scope = NULL__null;
1857 if (sc_parent_tag == DW_TAG_compile_unit) {
1858 symbol_context_scope = sc.comp_unit;
1859 } else if (sc.function != NULL__null && sc_parent_die) {
1860 symbol_context_scope =
1861 sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID());
1862 if (symbol_context_scope == NULL__null)
1863 symbol_context_scope = sc.function;
1864 }
1865
1866 if (symbol_context_scope != NULL__null) {
1867 type_sp->SetSymbolContextScope(symbol_context_scope);
1868 }
1869
1870 // We are ready to put this type into the uniqued list up at the module
1871 // level
1872 type_list->Insert(type_sp);
1873
1874 dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
1875 }
1876 } else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) {
1877 type_sp = type_ptr->shared_from_this();
1878 }
1879 }
1880 return type_sp;
1881}
1882
1883// DWARF parsing functions
1884
1885class DWARFASTParserClang::DelayedAddObjCClassProperty {
1886public:
1887 DelayedAddObjCClassProperty(
1888 const CompilerType &class_opaque_type, const char *property_name,
1889 const CompilerType &property_opaque_type, // The property type is only
1890 // required if you don't have an
1891 // ivar decl
1892 clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name,
1893 const char *property_getter_name, uint32_t property_attributes,
1894 const ClangASTMetadata *metadata)
1895 : m_class_opaque_type(class_opaque_type), m_property_name(property_name),
1896 m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl),
1897 m_property_setter_name(property_setter_name),
1898 m_property_getter_name(property_getter_name),
1899 m_property_attributes(property_attributes) {
1900 if (metadata != NULL__null) {
1901 m_metadata_ap.reset(new ClangASTMetadata());
1902 *m_metadata_ap = *metadata;
1903 }
1904 }
1905
1906 DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs) {
1907 *this = rhs;
1908 }
1909
1910 DelayedAddObjCClassProperty &
1911 operator=(const DelayedAddObjCClassProperty &rhs) {
1912 m_class_opaque_type = rhs.m_class_opaque_type;
1913 m_property_name = rhs.m_property_name;
1914 m_property_opaque_type = rhs.m_property_opaque_type;
1915 m_ivar_decl = rhs.m_ivar_decl;
1916 m_property_setter_name = rhs.m_property_setter_name;
1917 m_property_getter_name = rhs.m_property_getter_name;
1918 m_property_attributes = rhs.m_property_attributes;
1919
1920 if (rhs.m_metadata_ap.get()) {
1921 m_metadata_ap.reset(new ClangASTMetadata());
1922 *m_metadata_ap = *rhs.m_metadata_ap;
1923 }
1924 return *this;
1925 }
1926
1927 bool Finalize() {
1928 return ClangASTContext::AddObjCClassProperty(
1929 m_class_opaque_type, m_property_name, m_property_opaque_type,
1930 m_ivar_decl, m_property_setter_name, m_property_getter_name,
1931 m_property_attributes, m_metadata_ap.get());
1932 }
1933
1934private:
1935 CompilerType m_class_opaque_type;
1936 const char *m_property_name;
1937 CompilerType m_property_opaque_type;
1938 clang::ObjCIvarDecl *m_ivar_decl;
1939 const char *m_property_setter_name;
1940 const char *m_property_getter_name;
1941 uint32_t m_property_attributes;
1942 std::unique_ptr<ClangASTMetadata> m_metadata_ap;
1943};
1944
1945bool DWARFASTParserClang::ParseTemplateDIE(
1946 const DWARFDIE &die,
1947 ClangASTContext::TemplateParameterInfos &template_param_infos) {
1948 const dw_tag_t tag = die.Tag();
1949
1950 switch (tag) {
1951 case DW_TAG_GNU_template_parameter_pack: {
1952 template_param_infos.packed_args.reset(
1953 new ClangASTContext::TemplateParameterInfos);
1954 for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid();
1955 child_die = child_die.GetSibling()) {
1956 if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args))
1957 return false;
1958 }
1959 if (const char *name = die.GetName()) {
1960 template_param_infos.pack_name = name;
1961 }
1962 return true;
1963 }
1964 case DW_TAG_template_type_parameter:
1965 case DW_TAG_template_value_parameter: {
1966 DWARFAttributes attributes;
1967 const size_t num_attributes = die.GetAttributes(attributes);
1968 const char *name = nullptr;
1969 CompilerType clang_type;
1970 uint64_t uval64 = 0;
1971 bool uval64_valid = false;
1972 if (num_attributes > 0) {
1973 DWARFFormValue form_value;
1974 for (size_t i = 0; i < num_attributes; ++i) {
1975 const dw_attr_t attr = attributes.AttributeAtIndex(i);
1976
1977 switch (attr) {
1978 case DW_AT_name:
1979 if (attributes.ExtractFormValueAtIndex(i, form_value))
1980 name = form_value.AsCString();
1981 break;
1982
1983 case DW_AT_type:
1984 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1985 Type *lldb_type = die.ResolveTypeUID(DIERef(form_value));
1986 if (lldb_type)
1987 clang_type = lldb_type->GetForwardCompilerType();
1988 }
1989 break;
1990
1991 case DW_AT_const_value:
1992 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
1993 uval64_valid = true;
1994 uval64 = form_value.Unsigned();
1995 }
1996 break;
1997 default:
1998 break;
1999 }
2000 }
2001
2002 clang::ASTContext *ast = m_ast.getASTContext();
2003 if (!clang_type)
2004 clang_type = m_ast.GetBasicType(eBasicTypeVoid);
2005
2006 if (clang_type) {
2007 bool is_signed = false;
2008 if (name && name[0])
2009 template_param_infos.names.push_back(name);
2010 else
2011 template_param_infos.names.push_back(NULL__null);
2012
2013 // Get the signed value for any integer or enumeration if available
2014 clang_type.IsIntegerOrEnumerationType(is_signed);
2015
2016 if (tag == DW_TAG_template_value_parameter && uval64_valid) {
2017 llvm::APInt apint(clang_type.GetBitSize(nullptr), uval64, is_signed);
2018 template_param_infos.args.push_back(
2019 clang::TemplateArgument(*ast, llvm::APSInt(apint, !is_signed),
2020 ClangUtil::GetQualType(clang_type)));
2021 } else {
2022 template_param_infos.args.push_back(
2023 clang::TemplateArgument(ClangUtil::GetQualType(clang_type)));
2024 }
2025 } else {
2026 return false;
2027 }
2028 }
2029 }
2030 return true;
2031
2032 default:
2033 break;
2034 }
2035 return false;
2036}
2037
2038bool DWARFASTParserClang::ParseTemplateParameterInfos(
2039 const DWARFDIE &parent_die,
2040 ClangASTContext::TemplateParameterInfos &template_param_infos) {
2041
2042 if (!parent_die)
2043 return false;
2044
2045 Args template_parameter_names;
2046 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2047 die = die.GetSibling()) {
2048 const dw_tag_t tag = die.Tag();
2049
2050 switch (tag) {
2051 case DW_TAG_template_type_parameter:
2052 case DW_TAG_template_value_parameter:
2053 case DW_TAG_GNU_template_parameter_pack:
2054 ParseTemplateDIE(die, template_param_infos);
2055 break;
2056
2057 default:
2058 break;
2059 }
2060 }
2061 if (template_param_infos.args.empty())
2062 return false;
2063 return template_param_infos.args.size() == template_param_infos.names.size();
2064}
2065
2066bool DWARFASTParserClang::CompleteTypeFromDWARF(const DWARFDIE &die,
2067 lldb_private::Type *type,
2068 CompilerType &clang_type) {
2069 SymbolFileDWARF *dwarf = die.GetDWARF();
2070
2071 std::lock_guard<std::recursive_mutex> guard(
2072 dwarf->GetObjectFile()->GetModule()->GetMutex());
2073
2074 // Disable external storage for this type so we don't get anymore
2075 // clang::ExternalASTSource queries for this type.
2076 m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false);
2077
2078 if (!die)
2079 return false;
2080
2081#if defined LLDB_CONFIGURATION_DEBUG
2082 //----------------------------------------------------------------------
2083 // For debugging purposes, the LLDB_DWARF_DONT_COMPLETE_TYPENAMES
2084 // environment variable can be set with one or more typenames separated
2085 // by ';' characters. This will cause this function to not complete any
2086 // types whose names match.
2087 //
2088 // Examples of setting this environment variable:
2089 //
2090 // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo
2091 // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo;Bar;Baz
2092 //----------------------------------------------------------------------
2093 const char *dont_complete_typenames_cstr =
2094 getenv("LLDB_DWARF_DONT_COMPLETE_TYPENAMES");
2095 if (dont_complete_typenames_cstr && dont_complete_typenames_cstr[0]) {
2096 const char *die_name = die.GetName();
2097 if (die_name && die_name[0]) {
2098 const char *match = strstr(dont_complete_typenames_cstr, die_name);
2099 if (match) {
2100 size_t die_name_length = strlen(die_name);
2101 while (match) {
2102 const char separator_char = ';';
2103 const char next_char = match[die_name_length];
2104 if (next_char == '\0' || next_char == separator_char) {
2105 if (match == dont_complete_typenames_cstr ||
2106 match[-1] == separator_char)
2107 return false;
2108 }
2109 match = strstr(match + 1, die_name);
2110 }
2111 }
2112 }
2113 }
2114#endif
2115
2116 const dw_tag_t tag = die.Tag();
2117
2118 Log *log =
2119 nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
2120 if (log)
2121 dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace(
2122 log, "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...",
2123 die.GetID(), die.GetTagAsCString(), type->GetName().AsCString());
2124 assert(clang_type)(static_cast <bool> (clang_type) ? void (0) : __assert_fail
("clang_type", "/build/llvm-toolchain-snapshot-6.0~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 2124, __extension__ __PRETTY_FUNCTION__))
;
2125 DWARFAttributes attributes;
2126 switch (tag) {
2127 case DW_TAG_structure_type:
2128 case DW_TAG_union_type:
2129 case DW_TAG_class_type: {
2130 ClangASTImporter::LayoutInfo layout_info;
2131
2132 {
2133 if (die.HasChildren()) {
2134 LanguageType class_language = eLanguageTypeUnknown;
2135 if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) {
2136 class_language = eLanguageTypeObjC;
2137 // For objective C we don't start the definition when
2138 // the class is created.
2139 ClangASTContext::StartTagDeclarationDefinition(clang_type);
2140 }
2141
2142 int tag_decl_kind = -1;
2143 AccessType default_accessibility = eAccessNone;
2144 if (tag == DW_TAG_structure_type) {
2145 tag_decl_kind = clang::TTK_Struct;
2146 default_accessibility = eAccessPublic;
2147 } else if (tag == DW_TAG_union_type) {
2148 tag_decl_kind = clang::TTK_Union;
2149 default_accessibility = eAccessPublic;
2150 } else if (tag == DW_TAG_class_type) {
2151 tag_decl_kind = clang::TTK_Class;
2152 default_accessibility = eAccessPrivate;
2153 }
2154
2155 SymbolContext sc(die.GetLLDBCompileUnit());
2156 std::vector<clang::CXXBaseSpecifier *> base_classes;
2157 std::vector<int> member_accessibilities;
2158 bool is_a_class = false;
2159 // Parse members and base classes first
2160 DWARFDIECollection member_function_dies;
2161
2162 DelayedPropertyList delayed_properties;
2163 ParseChildMembers(sc, die, clang_type, class_language, base_classes,
2164 member_accessibilities, member_function_dies,
2165 delayed_properties, default_accessibility, is_a_class,
2166 layout_info);
2167
2168 // Now parse any methods if there were any...
2169 size_t num_functions = member_function_dies.Size();
2170 if (num_functions > 0) {
2171 for (size_t i = 0; i < num_functions; ++i) {
2172 dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i));
2173 }
2174 }
2175
2176 if (class_language == eLanguageTypeObjC) {
2177 ConstString class_name(clang_type.GetTypeName());
2178 if (class_name) {
2179 DIEArray method_die_offsets;
2180 dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets);
2181
2182 if (!method_die_offsets.empty()) {
2183 DWARFDebugInfo *debug_info = dwarf->DebugInfo();
2184
2185 const size_t num_matches = method_die_offsets.size();
2186 for (size_t i = 0; i < num_matches; ++i) {
2187 const DIERef &die_ref = method_die_offsets[i];
2188 DWARFDIE method_die = debug_info->GetDIE(die_ref);
2189
2190 if (method_die)
2191 method_die.ResolveType();
2192 }
2193 }
2194
2195 for (DelayedPropertyList::iterator pi = delayed_properties.begin(),
2196 pe = delayed_properties.end();
2197 pi != pe; ++pi)
2198 pi->Finalize();
2199 }
2200 }
2201
2202 // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we
2203 // need to tell the clang type it is actually a class.
2204 if (class_language != eLanguageTypeObjC) {
2205 if (is_a_class && tag_decl_kind != clang::TTK_Class)
2206 m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type),
2207 clang::TTK_Class);
2208 }
2209
2210 // Since DW_TAG_structure_type gets used for both classes
2211 // and structures, we may need to set any DW_TAG_member
2212 // fields to have a "private" access if none was specified.
2213 // When we parsed the child members we tracked that actual
2214 // accessibility value for each DW_TAG_member in the
2215 // "member_accessibilities" array. If the value for the
2216 // member is zero, then it was set to the "default_accessibility"
2217 // which for structs was "public". Below we correct this
2218 // by setting any fields to "private" that weren't correctly
2219 // set.
2220 if (is_a_class && !member_accessibilities.empty()) {
2221 // This is a class and all members that didn't have
2222 // their access specified are private.
2223 m_ast.SetDefaultAccessForRecordFields(
2224 m_ast.GetAsRecordDecl(clang_type), eAccessPrivate,
2225 &member_accessibilities.front(), member_accessibilities.size());
2226 }
2227
2228 if (!base_classes.empty()) {
2229 // Make sure all base classes refer to complete types and not
2230 // forward declarations. If we don't do this, clang will crash
2231 // with an assertion in the call to
2232 // clang_type.SetBaseClassesForClassType()
2233 for (auto &base_class : base_classes) {
2234 clang::TypeSourceInfo *type_source_info =
2235 base_class->getTypeSourceInfo();
2236 if (type_source_info) {
2237 CompilerType base_class_type(
2238 &m_ast, type_source_info->getType().getAsOpaquePtr());
2239 if (base_class_type.GetCompleteType() == false) {
2240 auto module = dwarf->GetObjectFile()->GetModule();
2241 module->ReportError(":: Class '%s' has a base class '%s' which "
2242 "does not have a complete definition.",
2243 die.GetName(),
2244 base_class_type.GetTypeName().GetCString());
2245 if (die.GetCU()->GetProducer() ==
2246 DWARFCompileUnit::eProducerClang)
2247 module->ReportError(":: Try compiling the source file with "
2248 "-fno-limit-debug-info.");
2249
2250 // We have no choice other than to pretend that the base class
2251 // is complete. If we don't do this, clang will crash when we
2252 // call setBases() inside of
2253 // "clang_type.SetBaseClassesForClassType()"
2254 // below. Since we provide layout assistance, all ivars in this
2255 // class and other classes will be fine, this is the best we can
2256 // do
2257 // short of crashing.
2258 if (ClangASTContext::StartTagDeclarationDefinition(
2259 base_class_type)) {
2260 ClangASTContext::CompleteTagDeclarationDefinition(
2261 base_class_type);
2262 }
2263 }
2264 }
2265 }
2266 m_ast.SetBaseClassesForClassType(clang_type.GetOpaqueQualType(),
2267 &base_classes.front(),
2268 base_classes.size());
2269
2270 // Clang will copy each CXXBaseSpecifier in "base_classes"
2271 // so we have to free them all.
2272 ClangASTContext::DeleteBaseClassSpecifiers(&base_classes.front(),
2273 base_classes.size());
2274 }
2275 }
2276 }
2277
2278 ClangASTContext::BuildIndirectFields(clang_type);
2279 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
2280
2281 if (!layout_info.field_offsets.empty() ||
2282 !layout_info.base_offsets.empty() ||
2283 !layout_info.vbase_offsets.empty()) {
2284 if (type)
2285 layout_info.bit_size = type->GetByteSize() * 8;
2286 if (layout_info.bit_size == 0)
2287 layout_info.bit_size =
2288 die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8;
2289
2290 clang::CXXRecordDecl *record_decl =
2291 m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType());
2292 if (record_decl) {
2293 if (log) {
2294 ModuleSP module_sp = dwarf->GetObjectFile()->GetModule();
2295
2296 if (module_sp) {
2297 module_sp->LogMessage(
2298 log,
2299 "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) "
2300 "caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u"
2301 ", alignment = %" PRIu64"l" "u"
2302 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])",
2303 static_cast<void *>(clang_type.GetOpaqueQualType()),
2304 static_cast<void *>(record_decl), layout_info.bit_size,
2305 layout_info.alignment,
2306 static_cast<uint32_t>(layout_info.field_offsets.size()),
2307 static_cast<uint32_t>(layout_info.base_offsets.size()),
2308 static_cast<uint32_t>(layout_info.vbase_offsets.size()));
2309
2310 uint32_t idx;
2311 {
2312 llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator
2313 pos,
2314 end = layout_info.field_offsets.end();
2315 for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end;
2316 ++pos, ++idx) {
2317 module_sp->LogMessage(
2318 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = "
2319 "%p) field[%u] = { bit_offset=%u, name='%s' }",
2320 static_cast<void *>(clang_type.GetOpaqueQualType()), idx,
2321 static_cast<uint32_t>(pos->second),
2322 pos->first->getNameAsString().c_str());
2323 }
2324 }
2325
2326 {
2327 llvm::DenseMap<const clang::CXXRecordDecl *,
2328 clang::CharUnits>::const_iterator base_pos,
2329 base_end = layout_info.base_offsets.end();
2330 for (idx = 0, base_pos = layout_info.base_offsets.begin();
2331 base_pos != base_end; ++base_pos, ++idx) {
2332 module_sp->LogMessage(
2333 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = "
2334 "%p) base[%u] = { byte_offset=%u, name='%s' }",
2335 clang_type.GetOpaqueQualType(), idx,
2336 (uint32_t)base_pos->second.getQuantity(),
2337 base_pos->first->getNameAsString().c_str());
2338 }
2339 }
2340 {
2341 llvm::DenseMap<const clang::CXXRecordDecl *,
2342 clang::CharUnits>::const_iterator vbase_pos,
2343 vbase_end = layout_info.vbase_offsets.end();
2344 for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin();
2345 vbase_pos != vbase_end; ++vbase_pos, ++idx) {
2346 module_sp->LogMessage(
2347 log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = "
2348 "%p) vbase[%u] = { byte_offset=%u, name='%s' }",
2349 static_cast<void *>(clang_type.GetOpaqueQualType()), idx,
2350 static_cast<uint32_t>(vbase_pos->second.getQuantity()),
2351 vbase_pos->first->getNameAsString().c_str());
2352 }
2353 }
2354 }
2355 }
2356 GetClangASTImporter().InsertRecordDecl(record_decl, layout_info);
2357 }
2358 }
2359 }
2360
2361 return (bool)clang_type;
2362
2363 case DW_TAG_enumeration_type:
2364 if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) {
2365 if (die.HasChildren()) {
2366 SymbolContext sc(die.GetLLDBCompileUnit());
2367 bool is_signed = false;
2368 clang_type.IsIntegerType(is_signed);
2369 ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(),
2370 die);
2371 }
2372 ClangASTContext::CompleteTagDeclarationDefinition(clang_type);
2373 }
2374 return (bool)clang_type;
2375
2376 default:
2377 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 2377, __extension__ __PRETTY_FUNCTION__))
;
2378 break;
2379 }
2380
2381 return false;
2382}
2383
2384std::vector<DWARFDIE> DWARFASTParserClang::GetDIEForDeclContext(
2385 lldb_private::CompilerDeclContext decl_context) {
2386 std::vector<DWARFDIE> result;
2387 for (auto it = m_decl_ctx_to_die.find(
2388 (clang::DeclContext *)decl_context.GetOpaqueDeclContext());
2389 it != m_decl_ctx_to_die.end(); it++)
2390 result.push_back(it->second);
2391 return result;
2392}
2393
2394CompilerDecl DWARFASTParserClang::GetDeclForUIDFromDWARF(const DWARFDIE &die) {
2395 clang::Decl *clang_decl = GetClangDeclForDIE(die);
2396 if (clang_decl != nullptr)
2397 return CompilerDecl(&m_ast, clang_decl);
2398 return CompilerDecl();
2399}
2400
2401CompilerDeclContext
2402DWARFASTParserClang::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) {
2403 clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die);
2404 if (clang_decl_ctx)
2405 return CompilerDeclContext(&m_ast, clang_decl_ctx);
2406 return CompilerDeclContext();
2407}
2408
2409CompilerDeclContext
2410DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) {
2411 clang::DeclContext *clang_decl_ctx =
2412 GetClangDeclContextContainingDIE(die, nullptr);
2413 if (clang_decl_ctx)
2414 return CompilerDeclContext(&m_ast, clang_decl_ctx);
2415 return CompilerDeclContext();
2416}
2417
2418size_t DWARFASTParserClang::ParseChildEnumerators(
2419 const SymbolContext &sc, lldb_private::CompilerType &clang_type,
2420 bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die) {
2421 if (!parent_die)
2422 return 0;
2423
2424 size_t enumerators_added = 0;
2425
2426 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2427 die = die.GetSibling()) {
2428 const dw_tag_t tag = die.Tag();
2429 if (tag == DW_TAG_enumerator) {
2430 DWARFAttributes attributes;
2431 const size_t num_child_attributes = die.GetAttributes(attributes);
2432 if (num_child_attributes > 0) {
2433 const char *name = NULL__null;
2434 bool got_value = false;
2435 int64_t enum_value = 0;
2436 Declaration decl;
2437
2438 uint32_t i;
2439 for (i = 0; i < num_child_attributes; ++i) {
2440 const dw_attr_t attr = attributes.AttributeAtIndex(i);
2441 DWARFFormValue form_value;
2442 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2443 switch (attr) {
2444 case DW_AT_const_value:
2445 got_value = true;
2446 if (is_signed)
2447 enum_value = form_value.Signed();
2448 else
2449 enum_value = form_value.Unsigned();
2450 break;
2451
2452 case DW_AT_name:
2453 name = form_value.AsCString();
2454 break;
2455
2456 case DW_AT_description:
2457 default:
2458 case DW_AT_decl_file:
2459 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
2460 form_value.Unsigned()));
2461 break;
2462 case DW_AT_decl_line:
2463 decl.SetLine(form_value.Unsigned());
2464 break;
2465 case DW_AT_decl_column:
2466 decl.SetColumn(form_value.Unsigned());
2467 break;
2468 case DW_AT_sibling:
2469 break;
2470 }
2471 }
2472 }
2473
2474 if (name && name[0] && got_value) {
2475 m_ast.AddEnumerationValueToEnumerationType(
2476 clang_type.GetOpaqueQualType(),
2477 m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()),
2478 decl, name, enum_value, enumerator_byte_size * 8);
2479 ++enumerators_added;
2480 }
2481 }
2482 }
2483 }
2484 return enumerators_added;
2485}
2486
2487#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE1)
2488
2489class DIEStack {
2490public:
2491 void Push(const DWARFDIE &die) { m_dies.push_back(die); }
2492
2493 void LogDIEs(Log *log) {
2494 StreamString log_strm;
2495 const size_t n = m_dies.size();
2496 log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n);
2497 for (size_t i = 0; i < n; i++) {
2498 std::string qualified_name;
2499 const DWARFDIE &die = m_dies[i];
2500 die.GetQualifiedName(qualified_name);
2501 log_strm.Printf("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n", (uint64_t)i,
2502 die.GetOffset(), die.GetTagAsCString(),
2503 qualified_name.c_str());
2504 }
2505 log->PutCString(log_strm.GetData());
2506 }
2507 void Pop() { m_dies.pop_back(); }
2508
2509 class ScopedPopper {
2510 public:
2511 ScopedPopper(DIEStack &die_stack)
2512 : m_die_stack(die_stack), m_valid(false) {}
2513
2514 void Push(const DWARFDIE &die) {
2515 m_valid = true;
2516 m_die_stack.Push(die);
2517 }
2518
2519 ~ScopedPopper() {
2520 if (m_valid)
2521 m_die_stack.Pop();
2522 }
2523
2524 protected:
2525 DIEStack &m_die_stack;
2526 bool m_valid;
2527 };
2528
2529protected:
2530 typedef std::vector<DWARFDIE> Stack;
2531 Stack m_dies;
2532};
2533#endif
2534
2535Function *DWARFASTParserClang::ParseFunctionFromDWARF(const SymbolContext &sc,
2536 const DWARFDIE &die) {
2537 DWARFRangeList func_ranges;
2538 const char *name = NULL__null;
2539 const char *mangled = NULL__null;
2540 int decl_file = 0;
2541 int decl_line = 0;
2542 int decl_column = 0;
2543 int call_file = 0;
2544 int call_line = 0;
2545 int call_column = 0;
2546 DWARFExpression frame_base(die.GetCU());
2547
2548 const dw_tag_t tag = die.Tag();
2549
2550 if (tag != DW_TAG_subprogram)
2551 return NULL__null;
2552
2553 if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line,
2554 decl_column, call_file, call_line, call_column,
2555 &frame_base)) {
2556
2557 // Union of all ranges in the function DIE (if the function is
2558 // discontiguous)
2559 AddressRange func_range;
2560 lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0);
2561 lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0);
2562 if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) &&
2563 lowest_func_addr <= highest_func_addr) {
2564 ModuleSP module_sp(die.GetModule());
2565 func_range.GetBaseAddress().ResolveAddressUsingFileSections(
2566 lowest_func_addr, module_sp->GetSectionList());
2567 if (func_range.GetBaseAddress().IsValid())
2568 func_range.SetByteSize(highest_func_addr - lowest_func_addr);
2569 }
2570
2571 if (func_range.GetBaseAddress().IsValid()) {
2572 Mangled func_name;
2573 if (mangled)
2574 func_name.SetValue(ConstString(mangled), true);
2575 else if (die.GetParent().Tag() == DW_TAG_compile_unit &&
2576 Language::LanguageIsCPlusPlus(die.GetLanguage()) && name &&
2577 strcmp(name, "main") != 0) {
2578 // If the mangled name is not present in the DWARF, generate the
2579 // demangled name
2580 // using the decl context. We skip if the function is "main" as its name
2581 // is
2582 // never mangled.
2583 bool is_static = false;
2584 bool is_variadic = false;
2585 bool has_template_params = false;
2586 unsigned type_quals = 0;
2587 std::vector<CompilerType> param_types;
2588 std::vector<clang::ParmVarDecl *> param_decls;
2589 DWARFDeclContext decl_ctx;
2590 StreamString sstr;
2591
2592 die.GetDWARFDeclContext(decl_ctx);
2593 sstr << decl_ctx.GetQualifiedName();
2594
2595 clang::DeclContext *containing_decl_ctx =
2596 GetClangDeclContextContainingDIE(die, nullptr);
2597 ParseChildParameters(sc, containing_decl_ctx, die, true, is_static,
2598 is_variadic, has_template_params, param_types,
2599 param_decls, type_quals);
2600 sstr << "(";
2601 for (size_t i = 0; i < param_types.size(); i++) {
2602 if (i > 0)
2603 sstr << ", ";
2604 sstr << param_types[i].GetTypeName();
2605 }
2606 if (is_variadic)
2607 sstr << ", ...";
2608 sstr << ")";
2609 if (type_quals & clang::Qualifiers::Const)
2610 sstr << " const";
2611
2612 func_name.SetValue(ConstString(sstr.GetString()), false);
2613 } else
2614 func_name.SetValue(ConstString(name), false);
2615
2616 FunctionSP func_sp;
2617 std::unique_ptr<Declaration> decl_ap;
2618 if (decl_file != 0 || decl_line != 0 || decl_column != 0)
2619 decl_ap.reset(new Declaration(
2620 sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file),
2621 decl_line, decl_column));
2622
2623 SymbolFileDWARF *dwarf = die.GetDWARF();
2624 // Supply the type _only_ if it has already been parsed
2625 Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE());
2626
2627 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 2627, __extension__ __PRETTY_FUNCTION__))
;
2628
2629 if (dwarf->FixupAddress(func_range.GetBaseAddress())) {
2630 const user_id_t func_user_id = die.GetID();
2631 func_sp.reset(new Function(sc.comp_unit,
2632 func_user_id, // UserID is the DIE offset
2633 func_user_id, func_name, func_type,
2634 func_range)); // first address range
2635
2636 if (func_sp.get() != NULL__null) {
2637 if (frame_base.IsValid())
2638 func_sp->GetFrameBaseExpression() = frame_base;
2639 sc.comp_unit->AddFunction(func_sp);
2640 return func_sp.get();
2641 }
2642 }
2643 }
2644 }
2645 return NULL__null;
2646}
2647
2648bool DWARFASTParserClang::ParseChildMembers(
2649 const SymbolContext &sc, const DWARFDIE &parent_die,
2650 CompilerType &class_clang_type, const LanguageType class_language,
2651 std::vector<clang::CXXBaseSpecifier *> &base_classes,
2652 std::vector<int> &member_accessibilities,
2653 DWARFDIECollection &member_function_dies,
2654 DelayedPropertyList &delayed_properties, AccessType &default_accessibility,
2655 bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) {
2656 if (!parent_die)
2657 return 0;
2658
2659 // Get the parent byte size so we can verify any members will fit
2660 const uint64_t parent_byte_size =
2661 parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX(18446744073709551615UL));
2662 const uint64_t parent_bit_size =
2663 parent_byte_size == UINT64_MAX(18446744073709551615UL) ? UINT64_MAX(18446744073709551615UL) : parent_byte_size * 8;
2664
2665 uint32_t member_idx = 0;
2666 BitfieldInfo last_field_info;
2667
2668 ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
2669 ClangASTContext *ast =
2670 llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem());
2671 if (ast == nullptr)
2672 return 0;
2673
2674 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
2675 die = die.GetSibling()) {
2676 dw_tag_t tag = die.Tag();
2677
2678 switch (tag) {
2679 case DW_TAG_member:
2680 case DW_TAG_APPLE_property: {
2681 DWARFAttributes attributes;
2682 const size_t num_attributes = die.GetAttributes(attributes);
2683 if (num_attributes > 0) {
2684 Declaration decl;
2685 // DWARFExpression location;
2686 const char *name = NULL__null;
2687 const char *prop_name = NULL__null;
2688 const char *prop_getter_name = NULL__null;
2689 const char *prop_setter_name = NULL__null;
2690 uint32_t prop_attributes = 0;
2691
2692 bool is_artificial = false;
2693 DWARFFormValue encoding_form;
2694 AccessType accessibility = eAccessNone;
2695 uint32_t member_byte_offset =
2696 (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX(4294967295U);
2697 size_t byte_size = 0;
2698 int64_t bit_offset = 0;
2699 uint64_t data_bit_offset = UINT64_MAX(18446744073709551615UL);
2700 size_t bit_size = 0;
2701 bool is_external =
2702 false; // On DW_TAG_members, this means the member is static
2703 uint32_t i;
2704 for (i = 0; i < num_attributes && !is_artificial; ++i) {
2705 const dw_attr_t attr = attributes.AttributeAtIndex(i);
2706 DWARFFormValue form_value;
2707 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
2708 switch (attr) {
2709 case DW_AT_decl_file:
2710 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
2711 form_value.Unsigned()));
2712 break;
2713 case DW_AT_decl_line:
2714 decl.SetLine(form_value.Unsigned());
2715 break;
2716 case DW_AT_decl_column:
2717 decl.SetColumn(form_value.Unsigned());
2718 break;
2719 case DW_AT_name:
2720 name = form_value.AsCString();
2721 break;
2722 case DW_AT_type:
2723 encoding_form = form_value;
2724 break;
2725 case DW_AT_bit_offset:
2726 bit_offset = form_value.Signed();
2727 break;
2728 case DW_AT_bit_size:
2729 bit_size = form_value.Unsigned();
2730 break;
2731 case DW_AT_byte_size:
2732 byte_size = form_value.Unsigned();
2733 break;
2734 case DW_AT_data_bit_offset:
2735 data_bit_offset = form_value.Unsigned();
2736 break;
2737 case DW_AT_data_member_location:
2738 if (form_value.BlockData()) {
2739 Value initialValue(0);
2740 Value memberOffset(0);
2741 const DWARFDataExtractor &debug_info_data =
2742 die.GetDWARF()->get_debug_info_data();
2743 uint32_t block_length = form_value.Unsigned();
2744 uint32_t block_offset =
2745 form_value.BlockData() - debug_info_data.GetDataStart();
2746 if (DWARFExpression::Evaluate(
2747 nullptr, // ExecutionContext *
2748 nullptr, // RegisterContext *
2749 module_sp, debug_info_data, die.GetCU(), block_offset,
2750 block_length, eRegisterKindDWARF, &initialValue,
2751 nullptr, memberOffset, nullptr)) {
2752 member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt();
2753 }
2754 } else {
2755 // With DWARF 3 and later, if the value is an integer constant,
2756 // this form value is the offset in bytes from the beginning
2757 // of the containing entity.
2758 member_byte_offset = form_value.Unsigned();
2759 }
2760 break;
2761
2762 case DW_AT_accessibility:
2763 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
2764 break;
2765 case DW_AT_artificial:
2766 is_artificial = form_value.Boolean();
2767 break;
2768 case DW_AT_APPLE_property_name:
2769 prop_name = form_value.AsCString();
2770 break;
2771 case DW_AT_APPLE_property_getter:
2772 prop_getter_name = form_value.AsCString();
2773 break;
2774 case DW_AT_APPLE_property_setter:
2775 prop_setter_name = form_value.AsCString();
2776 break;
2777 case DW_AT_APPLE_property_attribute:
2778 prop_attributes = form_value.Unsigned();
2779 break;
2780 case DW_AT_external:
2781 is_external = form_value.Boolean();
2782 break;
2783
2784 default:
2785 case DW_AT_declaration:
2786 case DW_AT_description:
2787 case DW_AT_mutable:
2788 case DW_AT_visibility:
2789 case DW_AT_sibling:
2790 break;
2791 }
2792 }
2793 }
2794
2795 if (prop_name) {
2796 ConstString fixed_getter;
2797 ConstString fixed_setter;
2798
2799 // Check if the property getter/setter were provided as full
2800 // names. We want basenames, so we extract them.
2801
2802 if (prop_getter_name && prop_getter_name[0] == '-') {
2803 ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true);
2804 prop_getter_name = prop_getter_method.GetSelector().GetCString();
2805 }
2806
2807 if (prop_setter_name && prop_setter_name[0] == '-') {
2808 ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true);
2809 prop_setter_name = prop_setter_method.GetSelector().GetCString();
2810 }
2811
2812 // If the names haven't been provided, they need to be
2813 // filled in.
2814
2815 if (!prop_getter_name) {
2816 prop_getter_name = prop_name;
2817 }
2818 if (!prop_setter_name && prop_name[0] &&
2819 !(prop_attributes & DW_APPLE_PROPERTY_readonly)) {
2820 StreamString ss;
2821
2822 ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]);
2823
2824 fixed_setter.SetString(ss.GetString());
2825 prop_setter_name = fixed_setter.GetCString();
2826 }
2827 }
2828
2829 // Clang has a DWARF generation bug where sometimes it
2830 // represents fields that are references with bad byte size
2831 // and bit size/offset information such as:
2832 //
2833 // DW_AT_byte_size( 0x00 )
2834 // DW_AT_bit_size( 0x40 )
2835 // DW_AT_bit_offset( 0xffffffffffffffc0 )
2836 //
2837 // So check the bit offset to make sure it is sane, and if
2838 // the values are not sane, remove them. If we don't do this
2839 // then we will end up with a crash if we try to use this
2840 // type in an expression when clang becomes unhappy with its
2841 // recycled debug info.
2842
2843 if (byte_size == 0 && bit_offset < 0) {
2844 bit_size = 0;
2845 bit_offset = 0;
2846 }
2847
2848 // FIXME: Make Clang ignore Objective-C accessibility for expressions
2849 if (class_language == eLanguageTypeObjC ||
2850 class_language == eLanguageTypeObjC_plus_plus)
2851 accessibility = eAccessNone;
2852
2853 if (member_idx == 0 && !is_artificial && name &&
2854 (strstr(name, "_vptr$") == name)) {
2855 // Not all compilers will mark the vtable pointer
2856 // member as artificial (llvm-gcc). We can't have
2857 // the virtual members in our classes otherwise it
2858 // throws off all child offsets since we end up
2859 // having and extra pointer sized member in our
2860 // class layouts.
2861 is_artificial = true;
2862 }
2863
2864 // Handle static members
2865 if (is_external && member_byte_offset == UINT32_MAX(4294967295U)) {
2866 Type *var_type = die.ResolveTypeUID(DIERef(encoding_form));
2867
2868 if (var_type) {
2869 if (accessibility == eAccessNone)
2870 accessibility = eAccessPublic;
2871 ClangASTContext::AddVariableToRecordType(
2872 class_clang_type, name, var_type->GetLayoutCompilerType(),
2873 accessibility);
2874 }
2875 break;
2876 }
2877
2878 if (is_artificial == false) {
2879 Type *member_type = die.ResolveTypeUID(DIERef(encoding_form));
2880
2881 clang::FieldDecl *field_decl = NULL__null;
2882 if (tag == DW_TAG_member) {
2883 if (member_type) {
2884 if (accessibility == eAccessNone)
2885 accessibility = default_accessibility;
2886 member_accessibilities.push_back(accessibility);
2887
2888 uint64_t field_bit_offset =
2889 (member_byte_offset == UINT32_MAX(4294967295U) ? 0
2890 : (member_byte_offset * 8));
2891 if (bit_size > 0) {
2892
2893 BitfieldInfo this_field_info;
2894 this_field_info.bit_offset = field_bit_offset;
2895 this_field_info.bit_size = bit_size;
2896
2897 /////////////////////////////////////////////////////////////
2898 // How to locate a field given the DWARF debug information
2899 //
2900 // AT_byte_size indicates the size of the word in which the
2901 // bit offset must be interpreted.
2902 //
2903 // AT_data_member_location indicates the byte offset of the
2904 // word from the base address of the structure.
2905 //
2906 // AT_bit_offset indicates how many bits into the word
2907 // (according to the host endianness) the low-order bit of
2908 // the field starts. AT_bit_offset can be negative.
2909 //
2910 // AT_bit_size indicates the size of the field in bits.
2911 /////////////////////////////////////////////////////////////
2912
2913 if (data_bit_offset != UINT64_MAX(18446744073709551615UL)) {
2914 this_field_info.bit_offset = data_bit_offset;
2915 } else {
2916 if (byte_size == 0)
2917 byte_size = member_type->GetByteSize();
2918
2919 ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2920 if (objfile->GetByteOrder() == eByteOrderLittle) {
2921 this_field_info.bit_offset += byte_size * 8;
2922 this_field_info.bit_offset -= (bit_offset + bit_size);
2923 } else {
2924 this_field_info.bit_offset += bit_offset;
2925 }
2926 }
2927
2928 if ((this_field_info.bit_offset >= parent_bit_size) ||
2929 !last_field_info.NextBitfieldOffsetIsValid(
2930 this_field_info.bit_offset)) {
2931 ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
2932 objfile->GetModule()->ReportWarning(
2933 "0x%8.8" PRIx64"l" "x" ": %s bitfield named \"%s\" has invalid "
2934 "bit offset (0x%8.8" PRIx64"l" "x"
2935 ") member will be ignored. Please file a bug against the "
2936 "compiler and include the preprocessed output for %s\n",
2937 die.GetID(), DW_TAG_value_to_name(tag), name,
2938 this_field_info.bit_offset,
2939 sc.comp_unit ? sc.comp_unit->GetPath().c_str()
2940 : "the source file");
2941 this_field_info.Clear();
2942 continue;
2943 }
2944
2945 // Update the field bit offset we will report for layout
2946 field_bit_offset = this_field_info.bit_offset;
2947
2948 // If the member to be emitted did not start on a character
2949 // boundary and there is
2950 // empty space between the last field and this one, then we need
2951 // to emit an
2952 // anonymous member filling up the space up to its start. There
2953 // are three cases
2954 // here:
2955 //
2956 // 1 If the previous member ended on a character boundary, then
2957 // we can emit an
2958 // anonymous member starting at the most recent character
2959 // boundary.
2960 //
2961 // 2 If the previous member did not end on a character boundary
2962 // and the distance
2963 // from the end of the previous member to the current member
2964 // is less than a
2965 // word width, then we can emit an anonymous member starting
2966 // right after the
2967 // previous member and right before this member.
2968 //
2969 // 3 If the previous member did not end on a character boundary
2970 // and the distance
2971 // from the end of the previous member to the current member
2972 // is greater than
2973 // or equal a word width, then we act as in Case 1.
2974
2975 const uint64_t character_width = 8;
2976 const uint64_t word_width = 32;
2977
2978 // Objective-C has invalid DW_AT_bit_offset values in older
2979 // versions
2980 // of clang, so we have to be careful and only insert unnamed
2981 // bitfields
2982 // if we have a new enough clang.
2983 bool detect_unnamed_bitfields = true;
2984
2985 if (class_language == eLanguageTypeObjC ||
2986 class_language == eLanguageTypeObjC_plus_plus)
2987 detect_unnamed_bitfields =
2988 die.GetCU()->Supports_unnamed_objc_bitfields();
2989
2990 if (detect_unnamed_bitfields) {
2991 BitfieldInfo anon_field_info;
2992
2993 if ((this_field_info.bit_offset % character_width) !=
2994 0) // not char aligned
2995 {
2996 uint64_t last_field_end = 0;
2997
2998 if (last_field_info.IsValid())
2999 last_field_end =
3000 last_field_info.bit_offset + last_field_info.bit_size;
3001
3002 if (this_field_info.bit_offset != last_field_end) {
3003 if (((last_field_end % character_width) == 0) || // case 1
3004 (this_field_info.bit_offset - last_field_end >=
3005 word_width)) // case 3
3006 {
3007 anon_field_info.bit_size =
3008 this_field_info.bit_offset % character_width;
3009 anon_field_info.bit_offset =
3010 this_field_info.bit_offset -
3011 anon_field_info.bit_size;
3012 } else // case 2
3013 {
3014 anon_field_info.bit_size =
3015 this_field_info.bit_offset - last_field_end;
3016 anon_field_info.bit_offset = last_field_end;
3017 }
3018 }
3019 }
3020
3021 if (anon_field_info.IsValid()) {
3022 clang::FieldDecl *unnamed_bitfield_decl =
3023 ClangASTContext::AddFieldToRecordType(
3024 class_clang_type, NULL__null,
3025 m_ast.GetBuiltinTypeForEncodingAndBitSize(
3026 eEncodingSint, word_width),
3027 accessibility, anon_field_info.bit_size);
3028
3029 layout_info.field_offsets.insert(std::make_pair(
3030 unnamed_bitfield_decl, anon_field_info.bit_offset));
3031 }
3032 }
3033 last_field_info = this_field_info;
3034 } else {
3035 last_field_info.Clear();
3036 }
3037
3038 CompilerType member_clang_type =
3039 member_type->GetLayoutCompilerType();
3040 if (!member_clang_type.IsCompleteType())
3041 member_clang_type.GetCompleteType();
3042
3043 {
3044 // Older versions of clang emit array[0] and array[1] in the
3045 // same way (<rdar://problem/12566646>).
3046 // If the current field is at the end of the structure, then
3047 // there is definitely no room for extra
3048 // elements and we override the type to array[0].
3049
3050 CompilerType member_array_element_type;
3051 uint64_t member_array_size;
3052 bool member_array_is_incomplete;
3053
3054 if (member_clang_type.IsArrayType(
3055 &member_array_element_type, &member_array_size,
3056 &member_array_is_incomplete) &&
3057 !member_array_is_incomplete) {
3058 uint64_t parent_byte_size =
3059 parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size,
3060 UINT64_MAX(18446744073709551615UL));
3061
3062 if (member_byte_offset >= parent_byte_size) {
3063 if (member_array_size != 1 &&
3064 (member_array_size != 0 ||
3065 member_byte_offset > parent_byte_size)) {
3066 module_sp->ReportError(
3067 "0x%8.8" PRIx64"l" "x"
3068 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x"
3069 " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x",
3070 die.GetID(), name, encoding_form.Reference(),
3071 parent_die.GetID());
3072 }
3073
3074 member_clang_type = m_ast.CreateArrayType(
3075 member_array_element_type, 0, false);
3076 }
3077 }
3078 }
3079
3080 if (ClangASTContext::IsCXXClassType(member_clang_type) &&
3081 member_clang_type.GetCompleteType() == false) {
3082 if (die.GetCU()->GetProducer() ==
3083 DWARFCompileUnit::eProducerClang)
3084 module_sp->ReportError(
3085 "DWARF DIE at 0x%8.8x (class %s) has a member variable "
3086 "0x%8.8x (%s) whose type is a forward declaration, not a "
3087 "complete definition.\nTry compiling the source file "
3088 "with -fno-limit-debug-info",
3089 parent_die.GetOffset(), parent_die.GetName(),
3090 die.GetOffset(), name);
3091 else
3092 module_sp->ReportError(
3093 "DWARF DIE at 0x%8.8x (class %s) has a member variable "
3094 "0x%8.8x (%s) whose type is a forward declaration, not a "
3095 "complete definition.\nPlease file a bug against the "
3096 "compiler and include the preprocessed output for %s",
3097 parent_die.GetOffset(), parent_die.GetName(),
3098 die.GetOffset(), name,
3099 sc.comp_unit ? sc.comp_unit->GetPath().c_str()
3100 : "the source file");
3101 // We have no choice other than to pretend that the member class
3102 // is complete. If we don't do this, clang will crash when
3103 // trying
3104 // to layout the class. Since we provide layout assistance, all
3105 // ivars in this class and other classes will be fine, this is
3106 // the best we can do short of crashing.
3107 if (ClangASTContext::StartTagDeclarationDefinition(
3108 member_clang_type)) {
3109 ClangASTContext::CompleteTagDeclarationDefinition(
3110 member_clang_type);
3111 } else {
3112 module_sp->ReportError(
3113 "DWARF DIE at 0x%8.8x (class %s) has a member variable "
3114 "0x%8.8x (%s) whose type claims to be a C++ class but we "
3115 "were not able to start its definition.\nPlease file a "
3116 "bug and attach the file at the start of this error "
3117 "message",
3118 parent_die.GetOffset(), parent_die.GetName(),
3119 die.GetOffset(), name);
3120 }
3121 }
3122
3123 field_decl = ClangASTContext::AddFieldToRecordType(
3124 class_clang_type, name, member_clang_type, accessibility,
3125 bit_size);
3126
3127 m_ast.SetMetadataAsUserID(field_decl, die.GetID());
3128
3129 layout_info.field_offsets.insert(
3130 std::make_pair(field_decl, field_bit_offset));
3131 } else {
3132 if (name)
3133 module_sp->ReportError(
3134 "0x%8.8" PRIx64"l" "x"
3135 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x"
3136 " which was unable to be parsed",
3137 die.GetID(), name, encoding_form.Reference());
3138 else
3139 module_sp->ReportError(
3140 "0x%8.8" PRIx64"l" "x"
3141 ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x"
3142 " which was unable to be parsed",
3143 die.GetID(), encoding_form.Reference());
3144 }
3145 }
3146
3147 if (prop_name != NULL__null && member_type) {
3148 clang::ObjCIvarDecl *ivar_decl = NULL__null;
3149
3150 if (field_decl) {
3151 ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
3152 assert(ivar_decl != NULL)(static_cast <bool> (ivar_decl != __null) ? void (0) : __assert_fail
("ivar_decl != NULL", "/build/llvm-toolchain-snapshot-6.0~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3152, __extension__ __PRETTY_FUNCTION__))
;
3153 }
3154
3155 ClangASTMetadata metadata;
3156 metadata.SetUserID(die.GetID());
3157 delayed_properties.push_back(DelayedAddObjCClassProperty(
3158 class_clang_type, prop_name,
3159 member_type->GetLayoutCompilerType(), ivar_decl,
3160 prop_setter_name, prop_getter_name, prop_attributes,
3161 &metadata));
3162
3163 if (ivar_decl)
3164 m_ast.SetMetadataAsUserID(ivar_decl, die.GetID());
3165 }
3166 }
3167 }
3168 ++member_idx;
3169 } break;
3170
3171 case DW_TAG_subprogram:
3172 // Let the type parsing code handle this one for us.
3173 member_function_dies.Append(die);
3174 break;
3175
3176 case DW_TAG_inheritance: {
3177 is_a_class = true;
3178 if (default_accessibility == eAccessNone)
3179 default_accessibility = eAccessPrivate;
3180 // TODO: implement DW_TAG_inheritance type parsing
3181 DWARFAttributes attributes;
3182 const size_t num_attributes = die.GetAttributes(attributes);
3183 if (num_attributes > 0) {
3184 Declaration decl;
3185 DWARFExpression location(die.GetCU());
3186 DWARFFormValue encoding_form;
3187 AccessType accessibility = default_accessibility;
3188 bool is_virtual = false;
3189 bool is_base_of_class = true;
3190 off_t member_byte_offset = 0;
3191 uint32_t i;
3192 for (i = 0; i < num_attributes; ++i) {
3193 const dw_attr_t attr = attributes.AttributeAtIndex(i);
3194 DWARFFormValue form_value;
3195 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3196 switch (attr) {
3197 case DW_AT_decl_file:
3198 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
3199 form_value.Unsigned()));
3200 break;
3201 case DW_AT_decl_line:
3202 decl.SetLine(form_value.Unsigned());
3203 break;
3204 case DW_AT_decl_column:
3205 decl.SetColumn(form_value.Unsigned());
3206 break;
3207 case DW_AT_type:
3208 encoding_form = form_value;
3209 break;
3210 case DW_AT_data_member_location:
3211 if (form_value.BlockData()) {
3212 Value initialValue(0);
3213 Value memberOffset(0);
3214 const DWARFDataExtractor &debug_info_data =
3215 die.GetDWARF()->get_debug_info_data();
3216 uint32_t block_length = form_value.Unsigned();
3217 uint32_t block_offset =
3218 form_value.BlockData() - debug_info_data.GetDataStart();
3219 if (DWARFExpression::Evaluate(nullptr, nullptr, module_sp,
3220 debug_info_data, die.GetCU(),
3221 block_offset, block_length,
3222 eRegisterKindDWARF, &initialValue,
3223 nullptr, memberOffset, nullptr)) {
3224 member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt();
3225 }
3226 } else {
3227 // With DWARF 3 and later, if the value is an integer constant,
3228 // this form value is the offset in bytes from the beginning
3229 // of the containing entity.
3230 member_byte_offset = form_value.Unsigned();
3231 }
3232 break;
3233
3234 case DW_AT_accessibility:
3235 accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
3236 break;
3237
3238 case DW_AT_virtuality:
3239 is_virtual = form_value.Boolean();
3240 break;
3241
3242 case DW_AT_sibling:
3243 break;
3244
3245 default:
3246 break;
3247 }
3248 }
3249 }
3250
3251 Type *base_class_type = die.ResolveTypeUID(DIERef(encoding_form));
3252 if (base_class_type == NULL__null) {
3253 module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to "
3254 "resolve the base class at 0x%8.8" PRIx64"l" "x"
3255 " from enclosing type 0x%8.8x. \nPlease file "
3256 "a bug and attach the file at the start of "
3257 "this error message",
3258 die.GetOffset(), encoding_form.Reference(),
3259 parent_die.GetOffset());
3260 break;
3261 }
3262
3263 CompilerType base_class_clang_type =
3264 base_class_type->GetFullCompilerType();
3265 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3265, __extension__ __PRETTY_FUNCTION__))
;
3266 if (class_language == eLanguageTypeObjC) {
3267 ast->SetObjCSuperClass(class_clang_type, base_class_clang_type);
3268 } else {
3269 base_classes.push_back(ast->CreateBaseClassSpecifier(
3270 base_class_clang_type.GetOpaqueQualType(), accessibility,
3271 is_virtual, is_base_of_class));
3272
3273 if (is_virtual) {
3274 // Do not specify any offset for virtual inheritance. The DWARF
3275 // produced by clang doesn't
3276 // give us a constant offset, but gives us a DWARF expressions that
3277 // requires an actual object
3278 // in memory. the DW_AT_data_member_location for a virtual base
3279 // class looks like:
3280 // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref,
3281 // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref,
3282 // DW_OP_plus )
3283 // Given this, there is really no valid response we can give to
3284 // clang for virtual base
3285 // class offsets, and this should eventually be removed from
3286 // LayoutRecordType() in the external
3287 // AST source in clang.
3288 } else {
3289 layout_info.base_offsets.insert(std::make_pair(
3290 ast->GetAsCXXRecordDecl(
3291 base_class_clang_type.GetOpaqueQualType()),
3292 clang::CharUnits::fromQuantity(member_byte_offset)));
3293 }
3294 }
3295 }
3296 } break;
3297
3298 default:
3299 break;
3300 }
3301 }
3302
3303 return true;
3304}
3305
3306size_t DWARFASTParserClang::ParseChildParameters(
3307 const SymbolContext &sc, clang::DeclContext *containing_decl_ctx,
3308 const DWARFDIE &parent_die, bool skip_artificial, bool &is_static,
3309 bool &is_variadic, bool &has_template_params,
3310 std::vector<CompilerType> &function_param_types,
3311 std::vector<clang::ParmVarDecl *> &function_param_decls,
3312 unsigned &type_quals) {
3313 if (!parent_die)
3314 return 0;
3315
3316 size_t arg_idx = 0;
3317 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
3318 die = die.GetSibling()) {
3319 const dw_tag_t tag = die.Tag();
3320 switch (tag) {
3321 case DW_TAG_formal_parameter: {
3322 DWARFAttributes attributes;
3323 const size_t num_attributes = die.GetAttributes(attributes);
3324 if (num_attributes > 0) {
3325 const char *name = NULL__null;
3326 Declaration decl;
3327 DWARFFormValue param_type_die_form;
3328 bool is_artificial = false;
3329 // one of None, Auto, Register, Extern, Static, PrivateExtern
3330
3331 clang::StorageClass storage = clang::SC_None;
3332 uint32_t i;
3333 for (i = 0; i < num_attributes; ++i) {
3334 const dw_attr_t attr = attributes.AttributeAtIndex(i);
3335 DWARFFormValue form_value;
3336 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3337 switch (attr) {
3338 case DW_AT_decl_file:
3339 decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(
3340 form_value.Unsigned()));
3341 break;
3342 case DW_AT_decl_line:
3343 decl.SetLine(form_value.Unsigned());
3344 break;
3345 case DW_AT_decl_column:
3346 decl.SetColumn(form_value.Unsigned());
3347 break;
3348 case DW_AT_name:
3349 name = form_value.AsCString();
3350 break;
3351 case DW_AT_type:
3352 param_type_die_form = form_value;
3353 break;
3354 case DW_AT_artificial:
3355 is_artificial = form_value.Boolean();
3356 break;
3357 case DW_AT_location:
3358 // if (form_value.BlockData())
3359 // {
3360 // const DWARFDataExtractor&
3361 // debug_info_data = debug_info();
3362 // uint32_t block_length =
3363 // form_value.Unsigned();
3364 // DWARFDataExtractor
3365 // location(debug_info_data,
3366 // form_value.BlockData() -
3367 // debug_info_data.GetDataStart(),
3368 // block_length);
3369 // }
3370 // else
3371 // {
3372 // }
3373 // break;
3374 case DW_AT_const_value:
3375 case DW_AT_default_value:
3376 case DW_AT_description:
3377 case DW_AT_endianity:
3378 case DW_AT_is_optional:
3379 case DW_AT_segment:
3380 case DW_AT_variable_parameter:
3381 default:
3382 case DW_AT_abstract_origin:
3383 case DW_AT_sibling:
3384 break;
3385 }
3386 }
3387 }
3388
3389 bool skip = false;
3390 if (skip_artificial) {
3391 if (is_artificial) {
3392 // In order to determine if a C++ member function is
3393 // "const" we have to look at the const-ness of "this"...
3394 // Ugly, but that
3395 if (arg_idx == 0) {
3396 if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) {
3397 // Often times compilers omit the "this" name for the
3398 // specification DIEs, so we can't rely upon the name
3399 // being in the formal parameter DIE...
3400 if (name == NULL__null || ::strcmp(name, "this") == 0) {
3401 Type *this_type =
3402 die.ResolveTypeUID(DIERef(param_type_die_form));
3403 if (this_type) {
3404 uint32_t encoding_mask = this_type->GetEncodingMask();
3405 if (encoding_mask & Type::eEncodingIsPointerUID) {
3406 is_static = false;
3407
3408 if (encoding_mask & (1u << Type::eEncodingIsConstUID))
3409 type_quals |= clang::Qualifiers::Const;
3410 if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
3411 type_quals |= clang::Qualifiers::Volatile;
3412 }
3413 }
3414 }
3415 }
3416 }
3417 skip = true;
3418 } else {
3419
3420 // HACK: Objective C formal parameters "self" and "_cmd"
3421 // are not marked as artificial in the DWARF...
3422 CompileUnit *comp_unit = die.GetLLDBCompileUnit();
3423 if (comp_unit) {
3424 switch (comp_unit->GetLanguage()) {
3425 case eLanguageTypeObjC:
3426 case eLanguageTypeObjC_plus_plus:
3427 if (name && name[0] &&
3428 (strcmp(name, "self") == 0 || strcmp(name, "_cmd") == 0))
3429 skip = true;
3430 break;
3431 default:
3432 break;
3433 }
3434 }
3435 }
3436 }
3437
3438 if (!skip) {
3439 Type *type = die.ResolveTypeUID(DIERef(param_type_die_form));
3440 if (type) {
3441 function_param_types.push_back(type->GetForwardCompilerType());
3442
3443 clang::ParmVarDecl *param_var_decl =
3444 m_ast.CreateParameterDeclaration(
3445 name, type->GetForwardCompilerType(), storage);
3446 assert(param_var_decl)(static_cast <bool> (param_var_decl) ? void (0) : __assert_fail
("param_var_decl", "/build/llvm-toolchain-snapshot-6.0~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3446, __extension__ __PRETTY_FUNCTION__))
;
3447 function_param_decls.push_back(param_var_decl);
3448
3449 m_ast.SetMetadataAsUserID(param_var_decl, die.GetID());
3450 }
3451 }
3452 }
3453 arg_idx++;
3454 } break;
3455
3456 case DW_TAG_unspecified_parameters:
3457 is_variadic = true;
3458 break;
3459
3460 case DW_TAG_template_type_parameter:
3461 case DW_TAG_template_value_parameter:
3462 case DW_TAG_GNU_template_parameter_pack:
3463 // The one caller of this was never using the template_param_infos,
3464 // and the local variable was taking up a large amount of stack space
3465 // in SymbolFileDWARF::ParseType() so this was removed. If we ever need
3466 // the template params back, we can add them back.
3467 // ParseTemplateDIE (dwarf_cu, die, template_param_infos);
3468 has_template_params = true;
3469 break;
3470
3471 default:
3472 break;
3473 }
3474 }
3475 return arg_idx;
3476}
3477
3478void DWARFASTParserClang::ParseChildArrayInfo(
3479 const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index,
3480 std::vector<uint64_t> &element_orders, uint32_t &byte_stride,
3481 uint32_t &bit_stride) {
3482 if (!parent_die)
3483 return;
3484
3485 for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid();
3486 die = die.GetSibling()) {
3487 const dw_tag_t tag = die.Tag();
3488 switch (tag) {
3489 case DW_TAG_subrange_type: {
3490 DWARFAttributes attributes;
3491 const size_t num_child_attributes = die.GetAttributes(attributes);
3492 if (num_child_attributes > 0) {
3493 uint64_t num_elements = 0;
3494 uint64_t lower_bound = 0;
3495 uint64_t upper_bound = 0;
3496 bool upper_bound_valid = false;
3497 uint32_t i;
3498 for (i = 0; i < num_child_attributes; ++i) {
3499 const dw_attr_t attr = attributes.AttributeAtIndex(i);
3500 DWARFFormValue form_value;
3501 if (attributes.ExtractFormValueAtIndex(i, form_value)) {
3502 switch (attr) {
3503 case DW_AT_name:
3504 break;
3505
3506 case DW_AT_count:
3507 num_elements = form_value.Unsigned();
3508 break;
3509
3510 case DW_AT_bit_stride:
3511 bit_stride = form_value.Unsigned();
3512 break;
3513
3514 case DW_AT_byte_stride:
3515 byte_stride = form_value.Unsigned();
3516 break;
3517
3518 case DW_AT_lower_bound:
3519 lower_bound = form_value.Unsigned();
3520 break;
3521
3522 case DW_AT_upper_bound:
3523 upper_bound_valid = true;
3524 upper_bound = form_value.Unsigned();
3525 break;
3526
3527 default:
3528 case DW_AT_abstract_origin:
3529 case DW_AT_accessibility:
3530 case DW_AT_allocated:
3531 case DW_AT_associated:
3532 case DW_AT_data_location:
3533 case DW_AT_declaration:
3534 case DW_AT_description:
3535 case DW_AT_sibling:
3536 case DW_AT_threads_scaled:
3537 case DW_AT_type:
3538 case DW_AT_visibility:
3539 break;
3540 }
3541 }
3542 }
3543
3544 if (num_elements == 0) {
3545 if (upper_bound_valid && upper_bound >= lower_bound)
3546 num_elements = upper_bound - lower_bound + 1;
3547 }
3548
3549 element_orders.push_back(num_elements);
3550 }
3551 } break;
3552 }
3553 }
3554}
3555
3556Type *DWARFASTParserClang::GetTypeForDIE(const DWARFDIE &die) {
3557 if (die) {
3558 SymbolFileDWARF *dwarf = die.GetDWARF();
3559 DWARFAttributes attributes;
3560 const size_t num_attributes = die.GetAttributes(attributes);
3561 if (num_attributes > 0) {
3562 DWARFFormValue type_die_form;
3563 for (size_t i = 0; i < num_attributes; ++i) {
3564 dw_attr_t attr = attributes.AttributeAtIndex(i);
3565 DWARFFormValue form_value;
3566
3567 if (attr == DW_AT_type &&
3568 attributes.ExtractFormValueAtIndex(i, form_value))
3569 return dwarf->ResolveTypeUID(dwarf->GetDIE(DIERef(form_value)), true);
3570 }
3571 }
3572 }
3573
3574 return nullptr;
3575}
3576
3577clang::Decl *DWARFASTParserClang::GetClangDeclForDIE(const DWARFDIE &die) {
3578 if (!die)
3579 return nullptr;
3580
3581 switch (die.Tag()) {
3582 case DW_TAG_variable:
3583 case DW_TAG_constant:
3584 case DW_TAG_formal_parameter:
3585 case DW_TAG_imported_declaration:
3586 case DW_TAG_imported_module:
3587 break;
3588 default:
3589 return nullptr;
3590 }
3591
3592 DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE());
3593 if (cache_pos != m_die_to_decl.end())
3594 return cache_pos->second;
3595
3596 if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) {
3597 clang::Decl *decl = GetClangDeclForDIE(spec_die);
3598 m_die_to_decl[die.GetDIE()] = decl;
3599 m_decl_to_die[decl].insert(die.GetDIE());
3600 return decl;
3601 }
3602
3603 if (DWARFDIE abstract_origin_die =
3604 die.GetReferencedDIE(DW_AT_abstract_origin)) {
3605 clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die);
3606 m_die_to_decl[die.GetDIE()] = decl;
3607 m_decl_to_die[decl].insert(die.GetDIE());
3608 return decl;
3609 }
3610
3611 clang::Decl *decl = nullptr;
3612 switch (die.Tag()) {
3613 case DW_TAG_variable:
3614 case DW_TAG_constant:
3615 case DW_TAG_formal_parameter: {
3616 SymbolFileDWARF *dwarf = die.GetDWARF();
3617 Type *type = GetTypeForDIE(die);
3618 if (dwarf && type) {
3619 const char *name = die.GetName();
3620 clang::DeclContext *decl_context =
3621 ClangASTContext::DeclContextGetAsDeclContext(
3622 dwarf->GetDeclContextContainingUID(die.GetID()));
3623 decl = m_ast.CreateVariableDeclaration(
3624 decl_context, name,
3625 ClangUtil::GetQualType(type->GetForwardCompilerType()));
3626 }
3627 break;
3628 }
3629 case DW_TAG_imported_declaration: {
3630 SymbolFileDWARF *dwarf = die.GetDWARF();
3631 DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3632 if (imported_uid) {
3633 CompilerDecl imported_decl = imported_uid.GetDecl();
3634 if (imported_decl) {
3635 clang::DeclContext *decl_context =
3636 ClangASTContext::DeclContextGetAsDeclContext(
3637 dwarf->GetDeclContextContainingUID(die.GetID()));
3638 if (clang::NamedDecl *clang_imported_decl =
3639 llvm::dyn_cast<clang::NamedDecl>(
3640 (clang::Decl *)imported_decl.GetOpaqueDecl()))
3641 decl =
3642 m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl);
3643 }
3644 }
3645 break;
3646 }
3647 case DW_TAG_imported_module: {
3648 SymbolFileDWARF *dwarf = die.GetDWARF();
3649 DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
3650
3651 if (imported_uid) {
3652 CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext();
3653 if (imported_decl_ctx) {
3654 clang::DeclContext *decl_context =
3655 ClangASTContext::DeclContextGetAsDeclContext(
3656 dwarf->GetDeclContextContainingUID(die.GetID()));
3657 if (clang::NamespaceDecl *ns_decl =
3658 ClangASTContext::DeclContextGetAsNamespaceDecl(
3659 imported_decl_ctx))
3660 decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl);
3661 }
3662 }
3663 break;
3664 }
3665 default:
3666 break;
3667 }
3668
3669 m_die_to_decl[die.GetDIE()] = decl;
3670 m_decl_to_die[decl].insert(die.GetDIE());
3671
3672 return decl;
3673}
3674
3675clang::DeclContext *
3676DWARFASTParserClang::GetClangDeclContextForDIE(const DWARFDIE &die) {
3677 if (die) {
3678 clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die);
3679 if (decl_ctx)
3680 return decl_ctx;
3681
3682 bool try_parsing_type = true;
3683 switch (die.Tag()) {
3684 case DW_TAG_compile_unit:
3685 decl_ctx = m_ast.GetTranslationUnitDecl();
3686 try_parsing_type = false;
3687 break;
3688
3689 case DW_TAG_namespace:
3690 decl_ctx = ResolveNamespaceDIE(die);
3691 try_parsing_type = false;
3692 break;
3693
3694 case DW_TAG_lexical_block:
3695 decl_ctx = GetDeclContextForBlock(die);
3696 try_parsing_type = false;
3697 break;
3698
3699 default:
3700 break;
3701 }
3702
3703 if (decl_ctx == nullptr && try_parsing_type) {
3704 Type *type = die.GetDWARF()->ResolveType(die);
3705 if (type)
3706 decl_ctx = GetCachedClangDeclContextForDIE(die);
3707 }
3708
3709 if (decl_ctx) {
3710 LinkDeclContextToDIE(decl_ctx, die);
3711 return decl_ctx;
3712 }
3713 }
3714 return nullptr;
3715}
3716
3717static bool IsSubroutine(const DWARFDIE &die) {
3718 switch (die.Tag()) {
3719 case DW_TAG_subprogram:
3720 case DW_TAG_inlined_subroutine:
3721 return true;
3722 default:
3723 return false;
3724 }
3725}
3726
3727static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die) {
3728 for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) {
3729 if (IsSubroutine(candidate)) {
3730 if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3731 return candidate;
3732 } else {
3733 return DWARFDIE();
3734 }
3735 }
3736 }
3737 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3738, __extension__ __PRETTY_FUNCTION__))
3738 "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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3738, __extension__ __PRETTY_FUNCTION__))
;
3739 return DWARFDIE();
3740}
3741
3742static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context) {
3743 for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid();
3744 candidate = candidate.GetSibling()) {
3745 if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) {
3746 return candidate;
3747 }
3748 }
3749 return DWARFDIE();
3750}
3751
3752static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block,
3753 const DWARFDIE &function) {
3754 assert(IsSubroutine(function))(static_cast <bool> (IsSubroutine(function)) ? void (0)
: __assert_fail ("IsSubroutine(function)", "/build/llvm-toolchain-snapshot-6.0~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3754, __extension__ __PRETTY_FUNCTION__))
;
3755 for (DWARFDIE context = block; context != function.GetParent();
3756 context = context.GetParent()) {
3757 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3757, __extension__ __PRETTY_FUNCTION__))
;
3758 if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) {
3759 return child;
3760 }
3761 }
3762 return DWARFDIE();
3763}
3764
3765clang::DeclContext *
3766DWARFASTParserClang::GetDeclContextForBlock(const DWARFDIE &die) {
3767 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~svn318882/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp"
, 3767, __extension__ __PRETTY_FUNCTION__))
;
3768 DWARFDIE containing_function_with_abstract_origin =
3769 GetContainingFunctionWithAbstractOrigin(die);
3770 if (!containing_function_with_abstract_origin) {
3771 return (clang::DeclContext *)ResolveBlockDIE(die);
3772 }
3773 DWARFDIE child = FindFirstChildWithAbstractOrigin(
3774 die, containing_function_with_abstract_origin);
3775 CompilerDeclContext decl_context =
3776 GetDeclContextContainingUIDFromDWARF(child);
3777 return (clang::DeclContext *)decl_context.GetOpaqueDeclContext();
3778}
3779
3780clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) {
3781 if (die && die.Tag() == DW_TAG_lexical_block) {
3782 clang::BlockDecl *decl =
3783 llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]);
3784
3785 if (!decl) {
3786 DWARFDIE decl_context_die;
3787 clang::DeclContext *decl_context =
3788 GetClangDeclContextContainingDIE(die, &decl_context_die);
3789 decl = m_ast.CreateBlockDeclaration(decl_context);
3790
3791 if (decl)
3792 LinkDeclContextToDIE((clang::DeclContext *)decl, die);
3793 }
3794
3795 return decl;
3796 }
3797 return nullptr;
3798}
3799
3800clang::NamespaceDecl *
3801DWARFASTParserClang::ResolveNamespaceDIE(const DWARFDIE &die) {
3802 if (die && die.Tag() == DW_TAG_namespace) {
3803 // See if we already parsed this namespace DIE and associated it with a
3804 // uniqued namespace declaration
3805 clang::NamespaceDecl *namespace_decl =
3806 static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]);
3807 if (namespace_decl)
3808 return namespace_decl;
3809 else {
3810 const char *namespace_name = die.GetName();
3811 clang::DeclContext *containing_decl_ctx =
3812 GetClangDeclContextContainingDIE(die, nullptr);
3813 namespace_decl = m_ast.GetUniqueNamespaceDeclaration(namespace_name,
3814 containing_decl_ctx);
3815 Log *log =
3816 nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
3817 if (log) {
3818 SymbolFileDWARF *dwarf = die.GetDWARF();
3819 if (namespace_name) {
3820 dwarf->GetObjectFile()->GetModule()->LogMessage(
3821 log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x"
3822 ": DW_TAG_namespace with DW_AT_name(\"%s\") => "
3823 "clang::NamespaceDecl *%p (original = %p)",
3824 static_cast<void *>(m_ast.getASTContext()), die.GetID(),
3825 namespace_name, static_cast<void *>(namespace_decl),
3826 static_cast<void *>(namespace_decl->getOriginalNamespace()));
3827 } else {
3828 dwarf->GetObjectFile()->GetModule()->LogMessage(
3829 log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x"
3830 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p "
3831 "(original = %p)",
3832 static_cast<void *>(m_ast.getASTContext()), die.GetID(),
3833 static_cast<void *>(namespace_decl),
3834 static_cast<void *>(namespace_decl->getOriginalNamespace()));
3835 }
3836 }
3837
3838 if (namespace_decl)
3839 LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die);
3840 return namespace_decl;
3841 }
3842 }
3843 return nullptr;
3844}
3845
3846clang::DeclContext *DWARFASTParserClang::GetClangDeclContextContainingDIE(
3847 const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) {
3848 SymbolFileDWARF *dwarf = die.GetDWARF();
3849
3850 DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die);
3851
3852 if (decl_ctx_die_copy)
3853 *decl_ctx_die_copy = decl_ctx_die;
3854
3855 if (decl_ctx_die) {
3856 clang::DeclContext *clang_decl_ctx =
3857 GetClangDeclContextForDIE(decl_ctx_die);
3858 if (clang_decl_ctx)
3859 return clang_decl_ctx;
3860 }
3861 return m_ast.GetTranslationUnitDecl();
3862}
3863
3864clang::DeclContext *
3865DWARFASTParserClang::GetCachedClangDeclContextForDIE(const DWARFDIE &die) {
3866 if (die) {
3867 DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE());
3868 if (pos != m_die_to_decl_ctx.end())
3869 return pos->second;
3870 }
3871 return nullptr;
3872}
3873
3874void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx,
3875 const DWARFDIE &die) {
3876 m_die_to_decl_ctx[die.GetDIE()] = decl_ctx;
3877 // There can be many DIEs for a single decl context
3878 // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE());
3879 m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die));
3880}
3881
3882bool DWARFASTParserClang::CopyUniqueClassMethodTypes(
3883 const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die,
3884 lldb_private::Type *class_type, DWARFDIECollection &failures) {
3885 if (!class_type || !src_class_die || !dst_class_die)
3886 return false;
3887 if (src_class_die.Tag() != dst_class_die.Tag())
3888 return false;
3889
3890 // We need to complete the class type so we can get all of the method types
3891 // parsed so we can then unique those types to their equivalent counterparts
3892 // in "dst_cu" and "dst_class_die"
3893 class_type->GetFullCompilerType();
3894
3895 DWARFDIE src_die;
3896 DWARFDIE dst_die;
3897 UniqueCStringMap<DWARFDIE> src_name_to_die;
3898 UniqueCStringMap<DWARFDIE> dst_name_to_die;
3899 UniqueCStringMap<DWARFDIE> src_name_to_die_artificial;
3900 UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial;
3901 for (src_die = src_class_die.GetFirstChild(); src_die.IsValid();
3902 src_die = src_die.GetSibling()) {
3903 if (src_die.Tag() == DW_TAG_subprogram) {
3904 // Make sure this is a declaration and not a concrete instance by looking
3905 // for DW_AT_declaration set to 1. Sometimes concrete function instances
3906 // are placed inside the class definitions and shouldn't be included in
3907 // the list of things are are tracking here.
3908 if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3909 const char *src_name = src_die.GetMangledName();
3910 if (src_name) {
3911 ConstString src_const_name(src_name);
3912 if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3913 src_name_to_die_artificial.Append(src_const_name, src_die);
3914 else
3915 src_name_to_die.Append(src_const_name, src_die);
3916 }
3917 }
3918 }
3919 }
3920 for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid();
3921 dst_die = dst_die.GetSibling()) {
3922 if (dst_die.Tag() == DW_TAG_subprogram) {
3923 // Make sure this is a declaration and not a concrete instance by looking
3924 // for DW_AT_declaration set to 1. Sometimes concrete function instances
3925 // are placed inside the class definitions and shouldn't be included in
3926 // the list of things are are tracking here.
3927 if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) {
3928 const char *dst_name = dst_die.GetMangledName();
3929 if (dst_name) {
3930 ConstString dst_const_name(dst_name);
3931 if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0))
3932 dst_name_to_die_artificial.Append(dst_const_name, dst_die);
3933 else
3934 dst_name_to_die.Append(dst_const_name, dst_die);
3935 }
3936 }
3937 }
3938 }
3939 const uint32_t src_size = src_name_to_die.GetSize();
3940 const uint32_t dst_size = dst_name_to_die.GetSize();
3941 Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO |
3942 // DWARF_LOG_TYPE_COMPLETION));
3943
3944 // Is everything kosher so we can go through the members at top speed?
3945 bool fast_path = true;
3946
3947 if (src_size != dst_size) {
3948 if (src_size != 0 && dst_size != 0) {
3949 if (log)
3950 log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, "
3951 "but they didn't have the same size (src=%d, dst=%d)",
3952 src_class_die.GetOffset(), dst_class_die.GetOffset(),
3953 src_size, dst_size);
3954 }
3955
3956 fast_path = false;
3957 }
3958
3959 uint32_t idx;
3960
3961 if (fast_path) {
3962 for (idx = 0; idx < src_size; ++idx) {
3963 src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
3964 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
3965
3966 if (src_die.Tag() != dst_die.Tag()) {
3967 if (log)
3968 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3969 "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)",
3970 src_class_die.GetOffset(), dst_class_die.GetOffset(),
3971 src_die.GetOffset(), src_die.GetTagAsCString(),
3972 dst_die.GetOffset(), dst_die.GetTagAsCString());
3973 fast_path = false;
3974 }
3975
3976 const char *src_name = src_die.GetMangledName();
3977 const char *dst_name = dst_die.GetMangledName();
3978
3979 // Make sure the names match
3980 if (src_name == dst_name || (strcmp(src_name, dst_name) == 0))
3981 continue;
3982
3983 if (log)
3984 log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, "
3985 "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)",
3986 src_class_die.GetOffset(), dst_class_die.GetOffset(),
3987 src_die.GetOffset(), src_name, dst_die.GetOffset(),
3988 dst_name);
3989
3990 fast_path = false;
3991 }
3992 }
3993
3994 DWARFASTParserClang *src_dwarf_ast_parser =
3995 (DWARFASTParserClang *)src_die.GetDWARFParser();
3996 DWARFASTParserClang *dst_dwarf_ast_parser =
3997 (DWARFASTParserClang *)dst_die.GetDWARFParser();
3998
3999 // Now do the work of linking the DeclContexts and Types.
4000 if (fast_path) {
4001 // We can do this quickly. Just run across the tables index-for-index since
4002 // we know each node has matching names and tags.
4003 for (idx = 0; idx < src_size; ++idx) {
4004 src_die = src_name_to_die.GetValueAtIndexUnchecked(idx);
4005 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
4006
4007 clang::DeclContext *src_decl_ctx =
4008 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
4009 if (src_decl_ctx) {
4010 if (log)
4011 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
4012 static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
4013 dst_die.GetOffset());
4014 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
4015 } else {
4016 if (log)
4017 log->Printf("warning: tried to unique decl context from 0x%8.8x for "
4018 "0x%8.8x, but none was found",
4019 src_die.GetOffset(), dst_die.GetOffset());
4020 }
4021
4022 Type *src_child_type =
4023 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
4024 if (src_child_type) {
4025 if (log)
4026 log->Printf(
4027 "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x",
4028 static_cast<void *>(src_child_type), src_child_type->GetID(),
4029 src_die.GetOffset(), dst_die.GetOffset());
4030 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
4031 } else {
4032 if (log)
4033 log->Printf("warning: tried to unique lldb_private::Type from "
4034 "0x%8.8x for 0x%8.8x, but none was found",
4035 src_die.GetOffset(), dst_die.GetOffset());
4036 }
4037 }
4038 } else {
4039 // We must do this slowly. For each member of the destination, look
4040 // up a member in the source with the same name, check its tag, and
4041 // unique them if everything matches up. Report failures.
4042
4043 if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) {
4044 src_name_to_die.Sort();
4045
4046 for (idx = 0; idx < dst_size; ++idx) {
4047 ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx);
4048 dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx);
4049 src_die = src_name_to_die.Find(dst_name, DWARFDIE());
4050
4051 if (src_die && (src_die.Tag() == dst_die.Tag())) {
4052 clang::DeclContext *src_decl_ctx =
4053 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
4054 if (src_decl_ctx) {
4055 if (log)
4056 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
4057 static_cast<void *>(src_decl_ctx),
4058 src_die.GetOffset(), dst_die.GetOffset());
4059 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
4060 } else {
4061 if (log)
4062 log->Printf("warning: tried to unique decl context from 0x%8.8x "
4063 "for 0x%8.8x, but none was found",
4064 src_die.GetOffset(), dst_die.GetOffset());
4065 }
4066
4067 Type *src_child_type =
4068 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
4069 if (src_child_type) {
4070 if (log)
4071 log->Printf("uniquing type %p (uid=0x%" PRIx64"l" "x"
4072 ") from 0x%8.8x for 0x%8.8x",
4073 static_cast<void *>(src_child_type),
4074 src_child_type->GetID(), src_die.GetOffset(),
4075 dst_die.GetOffset());
4076 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] =
4077 src_child_type;
4078 } else {
4079 if (log)
4080 log->Printf("warning: tried to unique lldb_private::Type from "
4081 "0x%8.8x for 0x%8.8x, but none was found",
4082 src_die.GetOffset(), dst_die.GetOffset());
4083 }
4084 } else {
4085 if (log)
4086 log->Printf("warning: couldn't find a match for 0x%8.8x",
4087 dst_die.GetOffset());
4088
4089 failures.Append(dst_die);
4090 }
4091 }
4092 }
4093 }
4094
4095 const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize();
4096 const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize();
4097
4098 if (src_size_artificial && dst_size_artificial) {
4099 dst_name_to_die_artificial.Sort();
4100
4101 for (idx = 0; idx < src_size_artificial; ++idx) {
4102 ConstString src_name_artificial =
4103 src_name_to_die_artificial.GetCStringAtIndex(idx);
4104 src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
4105 dst_die =
4106 dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE());
4107
4108 if (dst_die) {
4109 // Both classes have the artificial types, link them
4110 clang::DeclContext *src_decl_ctx =
4111 src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()];
4112 if (src_decl_ctx) {
4113 if (log)
4114 log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x",
4115 static_cast<void *>(src_decl_ctx), src_die.GetOffset(),
4116 dst_die.GetOffset());
4117 dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die);
4118 } else {
4119 if (log)
4120 log->Printf("warning: tried to unique decl context from 0x%8.8x "
4121 "for 0x%8.8x, but none was found",
4122 src_die.GetOffset(), dst_die.GetOffset());
4123 }
4124
4125 Type *src_child_type =
4126 dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()];
4127 if (src_child_type) {
4128 if (log)
4129 log->Printf(
4130 "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x",
4131 static_cast<void *>(src_child_type), src_child_type->GetID(),
4132 src_die.GetOffset(), dst_die.GetOffset());
4133 dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type;
4134 } else {
4135 if (log)
4136 log->Printf("warning: tried to unique lldb_private::Type from "
4137 "0x%8.8x for 0x%8.8x, but none was found",
4138 src_die.GetOffset(), dst_die.GetOffset());
4139 }
4140 }
4141 }
4142 }
4143
4144 if (dst_size_artificial) {
4145 for (idx = 0; idx < dst_size_artificial; ++idx) {
4146 ConstString dst_name_artificial =
4147 dst_name_to_die_artificial.GetCStringAtIndex(idx);
4148 dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx);
4149 if (log)
4150 log->Printf("warning: need to create artificial method for 0x%8.8x for "
4151 "method '%s'",
4152 dst_die.GetOffset(), dst_name_artificial.GetCString());
4153
4154 failures.Append(dst_die);
4155 }
4156 }
4157
4158 return (failures.Size() != 0);
4159}