File: | tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp |
Warning: | line 1394, column 21 Value stored to 'class_symfile' is never read |
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1 | //===-- DWARFASTParserClang.cpp ---------------------------------*- C++ -*-===// |
2 | // |
3 | // The LLVM Compiler Infrastructure |
4 | // |
5 | // This file is distributed under the University of Illinois Open Source |
6 | // License. See LICENSE.TXT for details. |
7 | // |
8 | //===----------------------------------------------------------------------===// |
9 | |
10 | #include <stdlib.h> |
11 | |
12 | #include "DWARFASTParserClang.h" |
13 | #include "DWARFDIE.h" |
14 | #include "DWARFDIECollection.h" |
15 | #include "DWARFDebugInfo.h" |
16 | #include "DWARFDeclContext.h" |
17 | #include "DWARFDefines.h" |
18 | #include "SymbolFileDWARF.h" |
19 | #include "SymbolFileDWARFDwo.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/Symbol/ClangASTImporter.h" |
28 | #include "lldb/Symbol/ClangExternalASTSourceCommon.h" |
29 | #include "lldb/Symbol/ClangUtil.h" |
30 | #include "lldb/Symbol/CompileUnit.h" |
31 | #include "lldb/Symbol/Function.h" |
32 | #include "lldb/Symbol/ObjectFile.h" |
33 | #include "lldb/Symbol/SymbolVendor.h" |
34 | #include "lldb/Symbol/TypeList.h" |
35 | #include "lldb/Symbol/TypeMap.h" |
36 | #include "lldb/Target/Language.h" |
37 | #include "lldb/Utility/LLDBAssert.h" |
38 | #include "lldb/Utility/Log.h" |
39 | #include "lldb/Utility/StreamString.h" |
40 | |
41 | #include "clang/AST/CXXInheritance.h" |
42 | #include "clang/AST/DeclCXX.h" |
43 | #include "clang/AST/DeclObjC.h" |
44 | #include "clang/AST/DeclTemplate.h" |
45 | |
46 | #include <map> |
47 | #include <vector> |
48 | |
49 | //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN |
50 | |
51 | #ifdef ENABLE_DEBUG_PRINTF |
52 | #include <stdio.h> |
53 | #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) |
54 | #else |
55 | #define DEBUG_PRINTF(fmt, ...) |
56 | #endif |
57 | |
58 | using namespace lldb; |
59 | using namespace lldb_private; |
60 | DWARFASTParserClang::DWARFASTParserClang(ClangASTContext &ast) |
61 | : m_ast(ast), m_die_to_decl_ctx(), m_decl_ctx_to_die() {} |
62 | |
63 | DWARFASTParserClang::~DWARFASTParserClang() {} |
64 | |
65 | static AccessType DW_ACCESS_to_AccessType(uint32_t dwarf_accessibility) { |
66 | switch (dwarf_accessibility) { |
67 | case DW_ACCESS_public: |
68 | return eAccessPublic; |
69 | case DW_ACCESS_private: |
70 | return eAccessPrivate; |
71 | case DW_ACCESS_protected: |
72 | return eAccessProtected; |
73 | default: |
74 | break; |
75 | } |
76 | return eAccessNone; |
77 | } |
78 | |
79 | static bool DeclKindIsCXXClass(clang::Decl::Kind decl_kind) { |
80 | switch (decl_kind) { |
81 | case clang::Decl::CXXRecord: |
82 | case clang::Decl::ClassTemplateSpecialization: |
83 | return true; |
84 | default: |
85 | break; |
86 | } |
87 | return false; |
88 | } |
89 | |
90 | struct BitfieldInfo { |
91 | uint64_t bit_size; |
92 | uint64_t bit_offset; |
93 | |
94 | BitfieldInfo() |
95 | : bit_size(LLDB_INVALID_ADDRESS(18446744073709551615UL)), bit_offset(LLDB_INVALID_ADDRESS(18446744073709551615UL)) {} |
96 | |
97 | void Clear() { |
98 | bit_size = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
99 | bit_offset = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
100 | } |
101 | |
102 | bool IsValid() const { |
103 | return (bit_size != LLDB_INVALID_ADDRESS(18446744073709551615UL)) && |
104 | (bit_offset != LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
105 | } |
106 | |
107 | bool NextBitfieldOffsetIsValid(const uint64_t next_bit_offset) const { |
108 | if (IsValid()) { |
109 | // This bitfield info is valid, so any subsequent bitfields must not |
110 | // overlap and must be at a higher bit offset than any previous bitfield |
111 | // + size. |
112 | return (bit_size + bit_offset) <= next_bit_offset; |
113 | } else { |
114 | // If the this BitfieldInfo is not valid, then any offset isOK |
115 | return true; |
116 | } |
117 | } |
118 | }; |
119 | |
120 | ClangASTImporter &DWARFASTParserClang::GetClangASTImporter() { |
121 | if (!m_clang_ast_importer_ap) { |
122 | m_clang_ast_importer_ap.reset(new ClangASTImporter); |
123 | } |
124 | return *m_clang_ast_importer_ap; |
125 | } |
126 | |
127 | /// Detect a forward declaration that is nested in a DW_TAG_module. |
128 | static bool isClangModuleFwdDecl(const DWARFDIE &Die) { |
129 | if (!Die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0)) |
130 | return false; |
131 | auto Parent = Die.GetParent(); |
132 | while (Parent.IsValid()) { |
133 | if (Parent.Tag() == DW_TAG_module) |
134 | return true; |
135 | Parent = Parent.GetParent(); |
136 | } |
137 | return false; |
138 | } |
139 | |
140 | TypeSP DWARFASTParserClang::ParseTypeFromDWO(const DWARFDIE &die, Log *log) { |
141 | ModuleSP dwo_module_sp = die.GetContainingDWOModule(); |
142 | if (!dwo_module_sp) |
143 | return TypeSP(); |
144 | |
145 | // This type comes from an external DWO module. |
146 | std::vector<CompilerContext> dwo_context; |
147 | die.GetDWOContext(dwo_context); |
148 | TypeMap dwo_types; |
149 | |
150 | if (!dwo_module_sp->GetSymbolVendor()->FindTypes(dwo_context, true, |
151 | dwo_types)) { |
152 | if (!isClangModuleFwdDecl(die)) |
153 | return TypeSP(); |
154 | |
155 | // Since this this type is defined in one of the Clang modules imported by |
156 | // this symbol file, search all of them. |
157 | auto *SymFile = die.GetCU()->GetSymbolFileDWARF(); |
158 | for (const auto &NameModule : SymFile->getExternalTypeModules()) { |
159 | if (!NameModule.second) |
160 | continue; |
161 | SymbolVendor *SymVendor = NameModule.second->GetSymbolVendor(); |
162 | if (SymVendor->FindTypes(dwo_context, true, dwo_types)) |
163 | break; |
164 | } |
165 | } |
166 | |
167 | const size_t num_dwo_types = dwo_types.GetSize(); |
168 | if (num_dwo_types != 1) |
169 | return TypeSP(); |
170 | |
171 | // We found a real definition for this type in the Clang module, so lets use |
172 | // it and cache the fact that we found a complete type for this die. |
173 | TypeSP dwo_type_sp = dwo_types.GetTypeAtIndex(0); |
174 | if (!dwo_type_sp) |
175 | return TypeSP(); |
176 | |
177 | lldb_private::CompilerType dwo_type = dwo_type_sp->GetForwardCompilerType(); |
178 | |
179 | lldb_private::CompilerType type = |
180 | GetClangASTImporter().CopyType(m_ast, dwo_type); |
181 | |
182 | if (!type) |
183 | return TypeSP(); |
184 | |
185 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
186 | TypeSP type_sp(new Type( |
187 | die.GetID(), dwarf, dwo_type_sp->GetName(), dwo_type_sp->GetByteSize(), |
188 | NULL__null, LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingInvalid, |
189 | &dwo_type_sp->GetDeclaration(), type, Type::eResolveStateForward)); |
190 | |
191 | dwarf->GetTypeList()->Insert(type_sp); |
192 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
193 | clang::TagDecl *tag_decl = ClangASTContext::GetAsTagDecl(type); |
194 | if (tag_decl) |
195 | LinkDeclContextToDIE(tag_decl, die); |
196 | else { |
197 | clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(die); |
198 | if (defn_decl_ctx) |
199 | LinkDeclContextToDIE(defn_decl_ctx, die); |
200 | } |
201 | |
202 | return type_sp; |
203 | } |
204 | |
205 | static void CompleteExternalTagDeclType(ClangASTImporter &ast_importer, |
206 | clang::DeclContext *decl_ctx, |
207 | DWARFDIE die, |
208 | const char *type_name_cstr) { |
209 | auto *tag_decl_ctx = clang::dyn_cast<clang::TagDecl>(decl_ctx); |
210 | if (!tag_decl_ctx) |
211 | return; |
212 | |
213 | // If this type was not imported from an external AST, there's nothing to do. |
214 | CompilerType type = ClangASTContext::GetTypeForDecl(tag_decl_ctx); |
215 | if (!type || !ast_importer.CanImport(type)) |
216 | return; |
217 | |
218 | auto qual_type = ClangUtil::GetQualType(type); |
219 | if (!ast_importer.RequireCompleteType(qual_type)) { |
220 | die.GetDWARF()->GetObjectFile()->GetModule()->ReportError( |
221 | "Unable to complete the Decl context for DIE '%s' at offset " |
222 | "0x%8.8x.\nPlease file a bug report.", |
223 | type_name_cstr ? type_name_cstr : "", die.GetOffset()); |
224 | // We need to make the type look complete otherwise, we might crash in |
225 | // Clang when adding children. |
226 | if (ClangASTContext::StartTagDeclarationDefinition(type)) |
227 | ClangASTContext::CompleteTagDeclarationDefinition(type); |
228 | } |
229 | } |
230 | |
231 | TypeSP DWARFASTParserClang::ParseTypeFromDWARF(const SymbolContext &sc, |
232 | const DWARFDIE &die, Log *log, |
233 | bool *type_is_new_ptr) { |
234 | TypeSP type_sp; |
235 | |
236 | if (type_is_new_ptr) |
237 | *type_is_new_ptr = false; |
238 | |
239 | AccessType accessibility = eAccessNone; |
240 | if (die) { |
241 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
242 | if (log) { |
243 | DWARFDIE context_die; |
244 | clang::DeclContext *context = |
245 | GetClangDeclContextContainingDIE(die, &context_die); |
246 | |
247 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
248 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die " |
249 | "0x%8.8x)) %s name = '%s')", |
250 | die.GetOffset(), static_cast<void *>(context), |
251 | context_die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
252 | } |
253 | Type *type_ptr = dwarf->GetDIEToType().lookup(die.GetDIE()); |
254 | TypeList *type_list = dwarf->GetTypeList(); |
255 | if (type_ptr == NULL__null) { |
256 | if (type_is_new_ptr) |
257 | *type_is_new_ptr = true; |
258 | |
259 | const dw_tag_t tag = die.Tag(); |
260 | |
261 | bool is_forward_declaration = false; |
262 | DWARFAttributes attributes; |
263 | const char *type_name_cstr = NULL__null; |
264 | const char *mangled_name_cstr = NULL__null; |
265 | ConstString type_name_const_str; |
266 | Type::ResolveState resolve_state = Type::eResolveStateUnresolved; |
267 | uint64_t byte_size = 0; |
268 | Declaration decl; |
269 | |
270 | Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; |
271 | CompilerType clang_type; |
272 | DWARFFormValue form_value; |
273 | |
274 | dw_attr_t attr; |
275 | |
276 | switch (tag) { |
277 | case DW_TAG_typedef: |
278 | case DW_TAG_base_type: |
279 | case DW_TAG_pointer_type: |
280 | case DW_TAG_reference_type: |
281 | case DW_TAG_rvalue_reference_type: |
282 | case DW_TAG_const_type: |
283 | case DW_TAG_restrict_type: |
284 | case DW_TAG_volatile_type: |
285 | case DW_TAG_unspecified_type: { |
286 | // Set a bit that lets us know that we are currently parsing this |
287 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
288 | |
289 | const size_t num_attributes = die.GetAttributes(attributes); |
290 | uint32_t encoding = 0; |
291 | DWARFFormValue encoding_uid; |
292 | |
293 | if (num_attributes > 0) { |
294 | uint32_t i; |
295 | for (i = 0; i < num_attributes; ++i) { |
296 | attr = attributes.AttributeAtIndex(i); |
297 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
298 | switch (attr) { |
299 | case DW_AT_decl_file: |
300 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
301 | form_value.Unsigned())); |
302 | break; |
303 | case DW_AT_decl_line: |
304 | decl.SetLine(form_value.Unsigned()); |
305 | break; |
306 | case DW_AT_decl_column: |
307 | decl.SetColumn(form_value.Unsigned()); |
308 | break; |
309 | case DW_AT_name: |
310 | type_name_cstr = form_value.AsCString(); |
311 | if (type_name_cstr) |
312 | type_name_const_str.SetCString(type_name_cstr); |
313 | break; |
314 | case DW_AT_byte_size: |
315 | byte_size = form_value.Unsigned(); |
316 | break; |
317 | case DW_AT_encoding: |
318 | encoding = form_value.Unsigned(); |
319 | break; |
320 | case DW_AT_type: |
321 | encoding_uid = form_value; |
322 | break; |
323 | default: |
324 | case DW_AT_sibling: |
325 | break; |
326 | } |
327 | } |
328 | } |
329 | } |
330 | |
331 | if (tag == DW_TAG_typedef && encoding_uid.IsValid()) { |
332 | // Try to parse a typedef from the DWO file first as modules can |
333 | // contain typedef'ed structures that have no names like: |
334 | // |
335 | // typedef struct { int a; } Foo; |
336 | // |
337 | // In this case we will have a structure with no name and a typedef |
338 | // named "Foo" that points to this unnamed structure. The name in the |
339 | // typedef is the only identifier for the struct, so always try to |
340 | // get typedefs from DWO files if possible. |
341 | // |
342 | // The type_sp returned will be empty if the typedef doesn't exist in |
343 | // a DWO file, so it is cheap to call this function just to check. |
344 | // |
345 | // If we don't do this we end up creating a TypeSP that says this is |
346 | // a typedef to type 0x123 (the DW_AT_type value would be 0x123 in |
347 | // the DW_TAG_typedef), and this is the unnamed structure type. We |
348 | // will have a hard time tracking down an unnammed structure type in |
349 | // the module DWO file, so we make sure we don't get into this |
350 | // situation by always resolving typedefs from the DWO file. |
351 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
352 | |
353 | // First make sure that the die that this is typedef'ed to _is_ just |
354 | // a declaration (DW_AT_declaration == 1), not a full definition |
355 | // since template types can't be represented in modules since only |
356 | // concrete instances of templates are ever emitted and modules won't |
357 | // contain those |
358 | if (encoding_die && |
359 | encoding_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == |
360 | 1) { |
361 | type_sp = ParseTypeFromDWO(die, log); |
362 | if (type_sp) |
363 | return type_sp; |
364 | } |
365 | } |
366 | |
367 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", |
368 | die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, |
369 | encoding_uid.Reference()); |
370 | |
371 | switch (tag) { |
372 | default: |
373 | break; |
374 | |
375 | case DW_TAG_unspecified_type: |
376 | if (strcmp(type_name_cstr, "nullptr_t") == 0 || |
377 | strcmp(type_name_cstr, "decltype(nullptr)") == 0) { |
378 | resolve_state = Type::eResolveStateFull; |
379 | clang_type = m_ast.GetBasicType(eBasicTypeNullPtr); |
380 | break; |
381 | } |
382 | // Fall through to base type below in case we can handle the type |
383 | // there... |
384 | LLVM_FALLTHROUGH[[clang::fallthrough]]; |
385 | |
386 | case DW_TAG_base_type: |
387 | resolve_state = Type::eResolveStateFull; |
388 | clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
389 | type_name_cstr, encoding, byte_size * 8); |
390 | break; |
391 | |
392 | case DW_TAG_pointer_type: |
393 | encoding_data_type = Type::eEncodingIsPointerUID; |
394 | break; |
395 | case DW_TAG_reference_type: |
396 | encoding_data_type = Type::eEncodingIsLValueReferenceUID; |
397 | break; |
398 | case DW_TAG_rvalue_reference_type: |
399 | encoding_data_type = Type::eEncodingIsRValueReferenceUID; |
400 | break; |
401 | case DW_TAG_typedef: |
402 | encoding_data_type = Type::eEncodingIsTypedefUID; |
403 | break; |
404 | case DW_TAG_const_type: |
405 | encoding_data_type = Type::eEncodingIsConstUID; |
406 | break; |
407 | case DW_TAG_restrict_type: |
408 | encoding_data_type = Type::eEncodingIsRestrictUID; |
409 | break; |
410 | case DW_TAG_volatile_type: |
411 | encoding_data_type = Type::eEncodingIsVolatileUID; |
412 | break; |
413 | } |
414 | |
415 | if (!clang_type && |
416 | (encoding_data_type == Type::eEncodingIsPointerUID || |
417 | encoding_data_type == Type::eEncodingIsTypedefUID) && |
418 | sc.comp_unit != NULL__null) { |
419 | if (tag == DW_TAG_pointer_type) { |
420 | DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type); |
421 | |
422 | if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0)) { |
423 | // Blocks have a __FuncPtr inside them which is a pointer to a |
424 | // function of the proper type. |
425 | |
426 | for (DWARFDIE child_die = target_die.GetFirstChild(); |
427 | child_die.IsValid(); child_die = child_die.GetSibling()) { |
428 | if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""), |
429 | "__FuncPtr")) { |
430 | DWARFDIE function_pointer_type = |
431 | child_die.GetReferencedDIE(DW_AT_type); |
432 | |
433 | if (function_pointer_type) { |
434 | DWARFDIE function_type = |
435 | function_pointer_type.GetReferencedDIE(DW_AT_type); |
436 | |
437 | bool function_type_is_new_pointer; |
438 | TypeSP lldb_function_type_sp = ParseTypeFromDWARF( |
439 | sc, function_type, log, &function_type_is_new_pointer); |
440 | |
441 | if (lldb_function_type_sp) { |
442 | clang_type = m_ast.CreateBlockPointerType( |
443 | lldb_function_type_sp->GetForwardCompilerType()); |
444 | encoding_data_type = Type::eEncodingIsUID; |
445 | encoding_uid.Clear(); |
446 | resolve_state = Type::eResolveStateFull; |
447 | } |
448 | } |
449 | |
450 | break; |
451 | } |
452 | } |
453 | } |
454 | } |
455 | |
456 | bool translation_unit_is_objc = |
457 | (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || |
458 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); |
459 | |
460 | if (translation_unit_is_objc) { |
461 | if (type_name_cstr != NULL__null) { |
462 | static ConstString g_objc_type_name_id("id"); |
463 | static ConstString g_objc_type_name_Class("Class"); |
464 | static ConstString g_objc_type_name_selector("SEL"); |
465 | |
466 | if (type_name_const_str == g_objc_type_name_id) { |
467 | if (log) |
468 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
469 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
470 | "is Objective-C 'id' built-in type.", |
471 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
472 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
473 | encoding_data_type = Type::eEncodingIsUID; |
474 | encoding_uid.Clear(); |
475 | resolve_state = Type::eResolveStateFull; |
476 | |
477 | } else if (type_name_const_str == g_objc_type_name_Class) { |
478 | if (log) |
479 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
480 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
481 | "is Objective-C 'Class' built-in type.", |
482 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
483 | clang_type = m_ast.GetBasicType(eBasicTypeObjCClass); |
484 | encoding_data_type = Type::eEncodingIsUID; |
485 | encoding_uid.Clear(); |
486 | resolve_state = Type::eResolveStateFull; |
487 | } else if (type_name_const_str == g_objc_type_name_selector) { |
488 | if (log) |
489 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
490 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
491 | "is Objective-C 'selector' built-in type.", |
492 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
493 | clang_type = m_ast.GetBasicType(eBasicTypeObjCSel); |
494 | encoding_data_type = Type::eEncodingIsUID; |
495 | encoding_uid.Clear(); |
496 | resolve_state = Type::eResolveStateFull; |
497 | } |
498 | } else if (encoding_data_type == Type::eEncodingIsPointerUID && |
499 | encoding_uid.IsValid()) { |
500 | // Clang sometimes erroneously emits id as objc_object*. In that |
501 | // case we fix up the type to "id". |
502 | |
503 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
504 | |
505 | if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) { |
506 | if (const char *struct_name = encoding_die.GetName()) { |
507 | if (!strcmp(struct_name, "objc_object")) { |
508 | if (log) |
509 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
510 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s " |
511 | "'%s' is 'objc_object*', which we overrode to " |
512 | "'id'.", |
513 | die.GetOffset(), die.GetTagAsCString(), |
514 | die.GetName()); |
515 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
516 | encoding_data_type = Type::eEncodingIsUID; |
517 | encoding_uid.Clear(); |
518 | resolve_state = Type::eResolveStateFull; |
519 | } |
520 | } |
521 | } |
522 | } |
523 | } |
524 | } |
525 | |
526 | type_sp.reset( |
527 | new Type(die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
528 | DIERef(encoding_uid).GetUID(dwarf), encoding_data_type, |
529 | &decl, clang_type, resolve_state)); |
530 | |
531 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
532 | } break; |
533 | |
534 | case DW_TAG_structure_type: |
535 | case DW_TAG_union_type: |
536 | case DW_TAG_class_type: { |
537 | // Set a bit that lets us know that we are currently parsing this |
538 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
539 | bool byte_size_valid = false; |
540 | |
541 | LanguageType class_language = eLanguageTypeUnknown; |
542 | bool is_complete_objc_class = false; |
543 | size_t calling_convention |
544 | = llvm::dwarf::CallingConvention::DW_CC_normal; |
545 | |
546 | const size_t num_attributes = die.GetAttributes(attributes); |
547 | if (num_attributes > 0) { |
548 | uint32_t i; |
549 | for (i = 0; i < num_attributes; ++i) { |
550 | attr = attributes.AttributeAtIndex(i); |
551 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
552 | switch (attr) { |
553 | case DW_AT_decl_file: |
554 | decl.SetFile( |
555 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
556 | form_value.Unsigned())); |
557 | break; |
558 | |
559 | case DW_AT_decl_line: |
560 | decl.SetLine(form_value.Unsigned()); |
561 | break; |
562 | |
563 | case DW_AT_decl_column: |
564 | decl.SetColumn(form_value.Unsigned()); |
565 | break; |
566 | |
567 | case DW_AT_name: |
568 | type_name_cstr = form_value.AsCString(); |
569 | type_name_const_str.SetCString(type_name_cstr); |
570 | break; |
571 | |
572 | case DW_AT_byte_size: |
573 | byte_size = form_value.Unsigned(); |
574 | byte_size_valid = true; |
575 | break; |
576 | |
577 | case DW_AT_accessibility: |
578 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
579 | break; |
580 | |
581 | case DW_AT_declaration: |
582 | is_forward_declaration = form_value.Boolean(); |
583 | break; |
584 | |
585 | case DW_AT_APPLE_runtime_class: |
586 | class_language = (LanguageType)form_value.Signed(); |
587 | break; |
588 | |
589 | case DW_AT_APPLE_objc_complete_type: |
590 | is_complete_objc_class = form_value.Signed(); |
591 | break; |
592 | case DW_AT_calling_convention: |
593 | calling_convention = form_value.Unsigned(); |
594 | break; |
595 | |
596 | case DW_AT_allocated: |
597 | case DW_AT_associated: |
598 | case DW_AT_data_location: |
599 | case DW_AT_description: |
600 | case DW_AT_start_scope: |
601 | case DW_AT_visibility: |
602 | default: |
603 | case DW_AT_sibling: |
604 | break; |
605 | } |
606 | } |
607 | } |
608 | } |
609 | |
610 | // UniqueDWARFASTType is large, so don't create a local variables on |
611 | // the stack, put it on the heap. This function is often called |
612 | // recursively and clang isn't good and sharing the stack space for |
613 | // variables in different blocks. |
614 | std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap( |
615 | new UniqueDWARFASTType()); |
616 | |
617 | ConstString unique_typename(type_name_const_str); |
618 | Declaration unique_decl(decl); |
619 | |
620 | if (type_name_const_str) { |
621 | LanguageType die_language = die.GetLanguage(); |
622 | if (Language::LanguageIsCPlusPlus(die_language)) { |
623 | // For C++, we rely solely upon the one definition rule that says |
624 | // only one thing can exist at a given decl context. We ignore the |
625 | // file and line that things are declared on. |
626 | std::string qualified_name; |
627 | if (die.GetQualifiedName(qualified_name)) |
628 | unique_typename = ConstString(qualified_name); |
629 | unique_decl.Clear(); |
630 | } |
631 | |
632 | if (dwarf->GetUniqueDWARFASTTypeMap().Find( |
633 | unique_typename, die, unique_decl, |
634 | byte_size_valid ? byte_size : -1, *unique_ast_entry_ap)) { |
635 | type_sp = unique_ast_entry_ap->m_type_sp; |
636 | if (type_sp) { |
637 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
638 | return type_sp; |
639 | } |
640 | } |
641 | } |
642 | |
643 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
644 | DW_TAG_value_to_name(tag), type_name_cstr); |
645 | |
646 | int tag_decl_kind = -1; |
647 | AccessType default_accessibility = eAccessNone; |
648 | if (tag == DW_TAG_structure_type) { |
649 | tag_decl_kind = clang::TTK_Struct; |
650 | default_accessibility = eAccessPublic; |
651 | } else if (tag == DW_TAG_union_type) { |
652 | tag_decl_kind = clang::TTK_Union; |
653 | default_accessibility = eAccessPublic; |
654 | } else if (tag == DW_TAG_class_type) { |
655 | tag_decl_kind = clang::TTK_Class; |
656 | default_accessibility = eAccessPrivate; |
657 | } |
658 | |
659 | if (byte_size_valid && byte_size == 0 && type_name_cstr && |
660 | die.HasChildren() == false && |
661 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC) { |
662 | // Work around an issue with clang at the moment where forward |
663 | // declarations for objective C classes are emitted as: |
664 | // DW_TAG_structure_type [2] |
665 | // DW_AT_name( "ForwardObjcClass" ) |
666 | // DW_AT_byte_size( 0x00 ) |
667 | // DW_AT_decl_file( "..." ) |
668 | // DW_AT_decl_line( 1 ) |
669 | // |
670 | // Note that there is no DW_AT_declaration and there are no children, |
671 | // and the byte size is zero. |
672 | is_forward_declaration = true; |
673 | } |
674 | |
675 | if (class_language == eLanguageTypeObjC || |
676 | class_language == eLanguageTypeObjC_plus_plus) { |
677 | if (!is_complete_objc_class && |
678 | die.Supports_DW_AT_APPLE_objc_complete_type()) { |
679 | // We have a valid eSymbolTypeObjCClass class symbol whose name |
680 | // matches the current objective C class that we are trying to find |
681 | // and this DIE isn't the complete definition (we checked |
682 | // is_complete_objc_class above and know it is false), so the real |
683 | // definition is in here somewhere |
684 | type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE( |
685 | die, type_name_const_str, true); |
686 | |
687 | if (!type_sp) { |
688 | SymbolFileDWARFDebugMap *debug_map_symfile = |
689 | dwarf->GetDebugMapSymfile(); |
690 | if (debug_map_symfile) { |
691 | // We weren't able to find a full declaration in this DWARF, |
692 | // see if we have a declaration anywhere else... |
693 | type_sp = |
694 | debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE( |
695 | die, type_name_const_str, true); |
696 | } |
697 | } |
698 | |
699 | if (type_sp) { |
700 | if (log) { |
701 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
702 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an " |
703 | "incomplete objc type, complete type is 0x%8.8" PRIx64"l" "x", |
704 | static_cast<void *>(this), die.GetOffset(), |
705 | DW_TAG_value_to_name(tag), type_name_cstr, |
706 | type_sp->GetID()); |
707 | } |
708 | |
709 | // We found a real definition for this type elsewhere so lets use |
710 | // it and cache the fact that we found a complete type for this |
711 | // die |
712 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
713 | return type_sp; |
714 | } |
715 | } |
716 | } |
717 | |
718 | if (is_forward_declaration) { |
719 | // We have a forward declaration to a type and we need to try and |
720 | // find a full declaration. We look in the current type index just in |
721 | // case we have a forward declaration followed by an actual |
722 | // declarations in the DWARF. If this fails, we need to look |
723 | // elsewhere... |
724 | if (log) { |
725 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
726 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
727 | "forward declaration, trying to find complete type", |
728 | static_cast<void *>(this), die.GetOffset(), |
729 | DW_TAG_value_to_name(tag), type_name_cstr); |
730 | } |
731 | |
732 | // See if the type comes from a DWO module and if so, track down that |
733 | // type. |
734 | type_sp = ParseTypeFromDWO(die, log); |
735 | if (type_sp) |
736 | return type_sp; |
737 | |
738 | DWARFDeclContext die_decl_ctx; |
739 | die.GetDWARFDeclContext(die_decl_ctx); |
740 | |
741 | // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, |
742 | // type_name_const_str); |
743 | type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
744 | |
745 | if (!type_sp) { |
746 | SymbolFileDWARFDebugMap *debug_map_symfile = |
747 | dwarf->GetDebugMapSymfile(); |
748 | if (debug_map_symfile) { |
749 | // We weren't able to find a full declaration in this DWARF, see |
750 | // if we have a declaration anywhere else... |
751 | type_sp = |
752 | debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( |
753 | die_decl_ctx); |
754 | } |
755 | } |
756 | |
757 | if (type_sp) { |
758 | if (log) { |
759 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
760 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
761 | "forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
762 | static_cast<void *>(this), die.GetOffset(), |
763 | DW_TAG_value_to_name(tag), type_name_cstr, type_sp->GetID()); |
764 | } |
765 | |
766 | // We found a real definition for this type elsewhere so lets use |
767 | // it and cache the fact that we found a complete type for this die |
768 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
769 | clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE( |
770 | dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf))); |
771 | if (defn_decl_ctx) |
772 | LinkDeclContextToDIE(defn_decl_ctx, die); |
773 | return type_sp; |
774 | } |
775 | } |
776 | assert(tag_decl_kind != -1)((tag_decl_kind != -1) ? static_cast<void> (0) : __assert_fail ("tag_decl_kind != -1", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 776, __PRETTY_FUNCTION__)); |
777 | bool clang_type_was_created = false; |
778 | clang_type.SetCompilerType( |
779 | &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
780 | if (!clang_type) { |
781 | clang::DeclContext *decl_ctx = |
782 | GetClangDeclContextContainingDIE(die, nullptr); |
783 | |
784 | // If your decl context is a record that was imported from another |
785 | // AST context (in the gmodules case), we need to make sure the type |
786 | // backing the Decl is complete before adding children to it. This is |
787 | // not an issue in the non-gmodules case because the debug info will |
788 | // always contain a full definition of parent types in that case. |
789 | CompleteExternalTagDeclType(GetClangASTImporter(), decl_ctx, die, |
790 | type_name_cstr); |
791 | |
792 | if (accessibility == eAccessNone && decl_ctx) { |
793 | // Check the decl context that contains this class/struct/union. If |
794 | // it is a class we must give it an accessibility. |
795 | const clang::Decl::Kind containing_decl_kind = |
796 | decl_ctx->getDeclKind(); |
797 | if (DeclKindIsCXXClass(containing_decl_kind)) |
798 | accessibility = default_accessibility; |
799 | } |
800 | |
801 | ClangASTMetadata metadata; |
802 | metadata.SetUserID(die.GetID()); |
803 | metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die)); |
804 | |
805 | if (type_name_cstr && strchr(type_name_cstr, '<')) { |
806 | ClangASTContext::TemplateParameterInfos template_param_infos; |
807 | if (ParseTemplateParameterInfos(die, template_param_infos)) { |
808 | clang::ClassTemplateDecl *class_template_decl = |
809 | m_ast.ParseClassTemplateDecl(decl_ctx, accessibility, |
810 | type_name_cstr, tag_decl_kind, |
811 | template_param_infos); |
812 | if (!class_template_decl) { |
813 | if (log) { |
814 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
815 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" " |
816 | "clang::ClassTemplateDecl failed to return a decl.", |
817 | static_cast<void *>(this), die.GetOffset(), |
818 | DW_TAG_value_to_name(tag), type_name_cstr); |
819 | } |
820 | return TypeSP(); |
821 | } |
822 | |
823 | clang::ClassTemplateSpecializationDecl |
824 | *class_specialization_decl = |
825 | m_ast.CreateClassTemplateSpecializationDecl( |
826 | decl_ctx, class_template_decl, tag_decl_kind, |
827 | template_param_infos); |
828 | clang_type = m_ast.CreateClassTemplateSpecializationType( |
829 | class_specialization_decl); |
830 | clang_type_was_created = true; |
831 | |
832 | m_ast.SetMetadata(class_template_decl, metadata); |
833 | m_ast.SetMetadata(class_specialization_decl, metadata); |
834 | } |
835 | } |
836 | |
837 | if (!clang_type_was_created) { |
838 | clang_type_was_created = true; |
839 | clang_type = m_ast.CreateRecordType(decl_ctx, accessibility, |
840 | type_name_cstr, tag_decl_kind, |
841 | class_language, &metadata); |
842 | } |
843 | } |
844 | |
845 | // Store a forward declaration to this class type in case any |
846 | // parameters in any class methods need it for the clang types for |
847 | // function prototypes. |
848 | LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die); |
849 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
850 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
851 | Type::eEncodingIsUID, &decl, clang_type, |
852 | Type::eResolveStateForward)); |
853 | |
854 | type_sp->SetIsCompleteObjCClass(is_complete_objc_class); |
855 | |
856 | // Add our type to the unique type map so we don't end up creating many |
857 | // copies of the same type over and over in the ASTContext for our |
858 | // module |
859 | unique_ast_entry_ap->m_type_sp = type_sp; |
860 | unique_ast_entry_ap->m_die = die; |
861 | unique_ast_entry_ap->m_declaration = unique_decl; |
862 | unique_ast_entry_ap->m_byte_size = byte_size; |
863 | dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename, |
864 | *unique_ast_entry_ap); |
865 | |
866 | if (is_forward_declaration && die.HasChildren()) { |
867 | // Check to see if the DIE actually has a definition, some version of |
868 | // GCC will |
869 | // emit DIEs with DW_AT_declaration set to true, but yet still have |
870 | // subprogram, members, or inheritance, so we can't trust it |
871 | DWARFDIE child_die = die.GetFirstChild(); |
872 | while (child_die) { |
873 | switch (child_die.Tag()) { |
874 | case DW_TAG_inheritance: |
875 | case DW_TAG_subprogram: |
876 | case DW_TAG_member: |
877 | case DW_TAG_APPLE_property: |
878 | case DW_TAG_class_type: |
879 | case DW_TAG_structure_type: |
880 | case DW_TAG_enumeration_type: |
881 | case DW_TAG_typedef: |
882 | case DW_TAG_union_type: |
883 | child_die.Clear(); |
884 | is_forward_declaration = false; |
885 | break; |
886 | default: |
887 | child_die = child_die.GetSibling(); |
888 | break; |
889 | } |
890 | } |
891 | } |
892 | |
893 | if (!is_forward_declaration) { |
894 | // Always start the definition for a class type so that if the class |
895 | // has child classes or types that require the class to be created |
896 | // for use as their decl contexts the class will be ready to accept |
897 | // these child definitions. |
898 | if (die.HasChildren() == false) { |
899 | // No children for this struct/union/class, lets finish it |
900 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
901 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
902 | } else { |
903 | dwarf->GetObjectFile()->GetModule()->ReportError( |
904 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
905 | "definition.\nPlease file a bug and attach the file at the " |
906 | "start of this error message", |
907 | die.GetOffset(), type_name_cstr); |
908 | } |
909 | |
910 | if (tag == DW_TAG_structure_type) // this only applies in C |
911 | { |
912 | clang::RecordDecl *record_decl = |
913 | ClangASTContext::GetAsRecordDecl(clang_type); |
914 | |
915 | if (record_decl) { |
916 | GetClangASTImporter().InsertRecordDecl( |
917 | record_decl, ClangASTImporter::LayoutInfo()); |
918 | } |
919 | } |
920 | } else if (clang_type_was_created) { |
921 | // Start the definition if the class is not objective C since the |
922 | // underlying decls respond to isCompleteDefinition(). Objective |
923 | // C decls don't respond to isCompleteDefinition() so we can't |
924 | // start the declaration definition right away. For C++ |
925 | // class/union/structs we want to start the definition in case the |
926 | // class is needed as the declaration context for a contained class |
927 | // or type without the need to complete that type.. |
928 | |
929 | if (class_language != eLanguageTypeObjC && |
930 | class_language != eLanguageTypeObjC_plus_plus) |
931 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
932 | |
933 | // Leave this as a forward declaration until we need to know the |
934 | // details of the type. lldb_private::Type will automatically call |
935 | // the SymbolFile virtual function |
936 | // "SymbolFileDWARF::CompleteType(Type *)" When the definition |
937 | // needs to be defined. |
938 | assert(!dwarf->GetForwardDeclClangTypeToDie().count(((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 941, __PRETTY_FUNCTION__)) |
939 | ClangUtil::RemoveFastQualifiers(clang_type)((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 941, __PRETTY_FUNCTION__)) |
940 | .GetOpaqueQualType()) &&((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 941, __PRETTY_FUNCTION__)) |
941 | "Type already in the forward declaration map!")((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 941, __PRETTY_FUNCTION__)); |
942 | // Can't assume m_ast.GetSymbolFile() is actually a |
943 | // SymbolFileDWARF, it can be a SymbolFileDWARFDebugMap for Apple |
944 | // binaries. |
945 | dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] = |
946 | clang_type.GetOpaqueQualType(); |
947 | dwarf->GetForwardDeclClangTypeToDie() |
948 | [ClangUtil::RemoveFastQualifiers(clang_type) |
949 | .GetOpaqueQualType()] = die.GetDIERef(); |
950 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true); |
951 | } |
952 | } |
953 | |
954 | // If we made a clang type, set the trivial abi if applicable: We only |
955 | // do this for pass by value - which implies the Trivial ABI. There |
956 | // isn't a way to assert that something that would normally be pass by |
957 | // value is pass by reference, so we ignore that attribute if set. |
958 | if (calling_convention == llvm::dwarf::DW_CC_pass_by_value) { |
959 | clang::CXXRecordDecl *record_decl = |
960 | m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); |
961 | if (record_decl) { |
962 | record_decl->setHasTrivialSpecialMemberForCall(); |
963 | } |
964 | } |
965 | |
966 | } break; |
967 | |
968 | case DW_TAG_enumeration_type: { |
969 | // Set a bit that lets us know that we are currently parsing this |
970 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
971 | |
972 | bool is_scoped = false; |
973 | DWARFFormValue encoding_form; |
974 | |
975 | const size_t num_attributes = die.GetAttributes(attributes); |
976 | if (num_attributes > 0) { |
977 | uint32_t i; |
978 | |
979 | for (i = 0; i < num_attributes; ++i) { |
980 | attr = attributes.AttributeAtIndex(i); |
981 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
982 | switch (attr) { |
983 | case DW_AT_decl_file: |
984 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
985 | form_value.Unsigned())); |
986 | break; |
987 | case DW_AT_decl_line: |
988 | decl.SetLine(form_value.Unsigned()); |
989 | break; |
990 | case DW_AT_decl_column: |
991 | decl.SetColumn(form_value.Unsigned()); |
992 | break; |
993 | case DW_AT_name: |
994 | type_name_cstr = form_value.AsCString(); |
995 | type_name_const_str.SetCString(type_name_cstr); |
996 | break; |
997 | case DW_AT_type: |
998 | encoding_form = form_value; |
999 | break; |
1000 | case DW_AT_byte_size: |
1001 | byte_size = form_value.Unsigned(); |
1002 | break; |
1003 | case DW_AT_accessibility: |
1004 | break; // accessibility = |
1005 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
1006 | case DW_AT_declaration: |
1007 | is_forward_declaration = form_value.Boolean(); |
1008 | break; |
1009 | case DW_AT_enum_class: |
1010 | is_scoped = form_value.Boolean(); |
1011 | break; |
1012 | case DW_AT_allocated: |
1013 | case DW_AT_associated: |
1014 | case DW_AT_bit_stride: |
1015 | case DW_AT_byte_stride: |
1016 | case DW_AT_data_location: |
1017 | case DW_AT_description: |
1018 | case DW_AT_start_scope: |
1019 | case DW_AT_visibility: |
1020 | case DW_AT_specification: |
1021 | case DW_AT_abstract_origin: |
1022 | case DW_AT_sibling: |
1023 | break; |
1024 | } |
1025 | } |
1026 | } |
1027 | |
1028 | if (is_forward_declaration) { |
1029 | type_sp = ParseTypeFromDWO(die, log); |
1030 | if (type_sp) |
1031 | return type_sp; |
1032 | |
1033 | DWARFDeclContext die_decl_ctx; |
1034 | die.GetDWARFDeclContext(die_decl_ctx); |
1035 | |
1036 | type_sp = |
1037 | dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
1038 | |
1039 | if (!type_sp) { |
1040 | SymbolFileDWARFDebugMap *debug_map_symfile = |
1041 | dwarf->GetDebugMapSymfile(); |
1042 | if (debug_map_symfile) { |
1043 | // We weren't able to find a full declaration in this DWARF, |
1044 | // see if we have a declaration anywhere else... |
1045 | type_sp = |
1046 | debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( |
1047 | die_decl_ctx); |
1048 | } |
1049 | } |
1050 | |
1051 | if (type_sp) { |
1052 | if (log) { |
1053 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
1054 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
1055 | "forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
1056 | static_cast<void *>(this), die.GetOffset(), |
1057 | DW_TAG_value_to_name(tag), type_name_cstr, |
1058 | type_sp->GetID()); |
1059 | } |
1060 | |
1061 | // We found a real definition for this type elsewhere so lets use |
1062 | // it and cache the fact that we found a complete type for this |
1063 | // die |
1064 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
1065 | clang::DeclContext *defn_decl_ctx = |
1066 | GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE( |
1067 | DIERef(type_sp->GetID(), dwarf))); |
1068 | if (defn_decl_ctx) |
1069 | LinkDeclContextToDIE(defn_decl_ctx, die); |
1070 | return type_sp; |
1071 | } |
1072 | } |
1073 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1074 | DW_TAG_value_to_name(tag), type_name_cstr); |
1075 | |
1076 | CompilerType enumerator_clang_type; |
1077 | clang_type.SetCompilerType( |
1078 | &m_ast, |
1079 | dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
1080 | if (!clang_type) { |
1081 | if (encoding_form.IsValid()) { |
1082 | Type *enumerator_type = |
1083 | dwarf->ResolveTypeUID(DIERef(encoding_form)); |
1084 | if (enumerator_type) |
1085 | enumerator_clang_type = enumerator_type->GetFullCompilerType(); |
1086 | } |
1087 | |
1088 | if (!enumerator_clang_type) { |
1089 | if (byte_size > 0) { |
1090 | enumerator_clang_type = |
1091 | m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
1092 | NULL__null, DW_ATE_signed, byte_size * 8); |
1093 | } else { |
1094 | enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt); |
1095 | } |
1096 | } |
1097 | |
1098 | clang_type = m_ast.CreateEnumerationType( |
1099 | type_name_cstr, GetClangDeclContextContainingDIE(die, nullptr), |
1100 | decl, enumerator_clang_type, is_scoped); |
1101 | } else { |
1102 | enumerator_clang_type = |
1103 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()); |
1104 | } |
1105 | |
1106 | LinkDeclContextToDIE( |
1107 | ClangASTContext::GetDeclContextForType(clang_type), die); |
1108 | |
1109 | type_sp.reset(new Type( |
1110 | die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
1111 | DIERef(encoding_form).GetUID(dwarf), Type::eEncodingIsUID, &decl, |
1112 | clang_type, Type::eResolveStateForward)); |
1113 | |
1114 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
1115 | if (die.HasChildren()) { |
1116 | SymbolContext cu_sc(die.GetLLDBCompileUnit()); |
1117 | bool is_signed = false; |
1118 | enumerator_clang_type.IsIntegerType(is_signed); |
1119 | ParseChildEnumerators(cu_sc, clang_type, is_signed, |
1120 | type_sp->GetByteSize(), die); |
1121 | } |
1122 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
1123 | } else { |
1124 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1125 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
1126 | "definition.\nPlease file a bug and attach the file at the " |
1127 | "start of this error message", |
1128 | die.GetOffset(), type_name_cstr); |
1129 | } |
1130 | } |
1131 | } break; |
1132 | |
1133 | case DW_TAG_inlined_subroutine: |
1134 | case DW_TAG_subprogram: |
1135 | case DW_TAG_subroutine_type: { |
1136 | // Set a bit that lets us know that we are currently parsing this |
1137 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
1138 | |
1139 | DWARFFormValue type_die_form; |
1140 | bool is_variadic = false; |
1141 | bool is_inline = false; |
1142 | bool is_static = false; |
1143 | bool is_virtual = false; |
1144 | bool is_explicit = false; |
1145 | bool is_artificial = false; |
1146 | bool has_template_params = false; |
1147 | DWARFFormValue specification_die_form; |
1148 | DWARFFormValue abstract_origin_die_form; |
1149 | dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
1150 | |
1151 | unsigned type_quals = 0; |
1152 | clang::StorageClass storage = |
1153 | clang::SC_None; //, Extern, Static, PrivateExtern |
1154 | |
1155 | const size_t num_attributes = die.GetAttributes(attributes); |
1156 | if (num_attributes > 0) { |
1157 | uint32_t i; |
1158 | for (i = 0; i < num_attributes; ++i) { |
1159 | attr = attributes.AttributeAtIndex(i); |
1160 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1161 | switch (attr) { |
1162 | case DW_AT_decl_file: |
1163 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
1164 | form_value.Unsigned())); |
1165 | break; |
1166 | case DW_AT_decl_line: |
1167 | decl.SetLine(form_value.Unsigned()); |
1168 | break; |
1169 | case DW_AT_decl_column: |
1170 | decl.SetColumn(form_value.Unsigned()); |
1171 | break; |
1172 | case DW_AT_name: |
1173 | type_name_cstr = form_value.AsCString(); |
1174 | type_name_const_str.SetCString(type_name_cstr); |
1175 | break; |
1176 | |
1177 | case DW_AT_linkage_name: |
1178 | case DW_AT_MIPS_linkage_name: |
1179 | mangled_name_cstr = form_value.AsCString(); |
1180 | break; |
1181 | case DW_AT_type: |
1182 | type_die_form = form_value; |
1183 | break; |
1184 | case DW_AT_accessibility: |
1185 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
1186 | break; |
1187 | case DW_AT_declaration: |
1188 | break; // is_forward_declaration = form_value.Boolean(); break; |
1189 | case DW_AT_inline: |
1190 | is_inline = form_value.Boolean(); |
1191 | break; |
1192 | case DW_AT_virtuality: |
1193 | is_virtual = form_value.Boolean(); |
1194 | break; |
1195 | case DW_AT_explicit: |
1196 | is_explicit = form_value.Boolean(); |
1197 | break; |
1198 | case DW_AT_artificial: |
1199 | is_artificial = form_value.Boolean(); |
1200 | break; |
1201 | |
1202 | case DW_AT_external: |
1203 | if (form_value.Unsigned()) { |
1204 | if (storage == clang::SC_None) |
1205 | storage = clang::SC_Extern; |
1206 | else |
1207 | storage = clang::SC_PrivateExtern; |
1208 | } |
1209 | break; |
1210 | |
1211 | case DW_AT_specification: |
1212 | specification_die_form = form_value; |
1213 | break; |
1214 | |
1215 | case DW_AT_abstract_origin: |
1216 | abstract_origin_die_form = form_value; |
1217 | break; |
1218 | |
1219 | case DW_AT_object_pointer: |
1220 | object_pointer_die_offset = form_value.Reference(); |
1221 | break; |
1222 | |
1223 | case DW_AT_allocated: |
1224 | case DW_AT_associated: |
1225 | case DW_AT_address_class: |
1226 | case DW_AT_calling_convention: |
1227 | case DW_AT_data_location: |
1228 | case DW_AT_elemental: |
1229 | case DW_AT_entry_pc: |
1230 | case DW_AT_frame_base: |
1231 | case DW_AT_high_pc: |
1232 | case DW_AT_low_pc: |
1233 | case DW_AT_prototyped: |
1234 | case DW_AT_pure: |
1235 | case DW_AT_ranges: |
1236 | case DW_AT_recursive: |
1237 | case DW_AT_return_addr: |
1238 | case DW_AT_segment: |
1239 | case DW_AT_start_scope: |
1240 | case DW_AT_static_link: |
1241 | case DW_AT_trampoline: |
1242 | case DW_AT_visibility: |
1243 | case DW_AT_vtable_elem_location: |
1244 | case DW_AT_description: |
1245 | case DW_AT_sibling: |
1246 | break; |
1247 | } |
1248 | } |
1249 | } |
1250 | } |
1251 | |
1252 | std::string object_pointer_name; |
1253 | if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) { |
1254 | DWARFDIE object_pointer_die = die.GetDIE(object_pointer_die_offset); |
1255 | if (object_pointer_die) { |
1256 | const char *object_pointer_name_cstr = object_pointer_die.GetName(); |
1257 | if (object_pointer_name_cstr) |
1258 | object_pointer_name = object_pointer_name_cstr; |
1259 | } |
1260 | } |
1261 | |
1262 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1263 | DW_TAG_value_to_name(tag), type_name_cstr); |
1264 | |
1265 | CompilerType return_clang_type; |
1266 | Type *func_type = NULL__null; |
1267 | |
1268 | if (type_die_form.IsValid()) |
1269 | func_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
1270 | |
1271 | if (func_type) |
1272 | return_clang_type = func_type->GetForwardCompilerType(); |
1273 | else |
1274 | return_clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
1275 | |
1276 | std::vector<CompilerType> function_param_types; |
1277 | std::vector<clang::ParmVarDecl *> function_param_decls; |
1278 | |
1279 | // Parse the function children for the parameters |
1280 | |
1281 | DWARFDIE decl_ctx_die; |
1282 | clang::DeclContext *containing_decl_ctx = |
1283 | GetClangDeclContextContainingDIE(die, &decl_ctx_die); |
1284 | const clang::Decl::Kind containing_decl_kind = |
1285 | containing_decl_ctx->getDeclKind(); |
1286 | |
1287 | bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind); |
1288 | // Start off static. This will be set to false in |
1289 | // ParseChildParameters(...) if we find a "this" parameters as the |
1290 | // first parameter |
1291 | if (is_cxx_method) { |
1292 | is_static = true; |
1293 | } |
1294 | |
1295 | if (die.HasChildren()) { |
1296 | bool skip_artificial = true; |
1297 | ParseChildParameters(sc, containing_decl_ctx, die, skip_artificial, |
1298 | is_static, is_variadic, has_template_params, |
1299 | function_param_types, function_param_decls, |
1300 | type_quals); |
1301 | } |
1302 | |
1303 | bool ignore_containing_context = false; |
1304 | // Check for templatized class member functions. If we had any |
1305 | // DW_TAG_template_type_parameter or DW_TAG_template_value_parameter |
1306 | // the DW_TAG_subprogram DIE, then we can't let this become a method in |
1307 | // a class. Why? Because templatized functions are only emitted if one |
1308 | // of the templatized methods is used in the current compile unit and |
1309 | // we will end up with classes that may or may not include these member |
1310 | // functions and this means one class won't match another class |
1311 | // definition and it affects our ability to use a class in the clang |
1312 | // expression parser. So for the greater good, we currently must not |
1313 | // allow any template member functions in a class definition. |
1314 | if (is_cxx_method && has_template_params) { |
1315 | ignore_containing_context = true; |
1316 | is_cxx_method = false; |
1317 | } |
1318 | |
1319 | // clang_type will get the function prototype clang type after this |
1320 | // call |
1321 | clang_type = m_ast.CreateFunctionType( |
1322 | return_clang_type, function_param_types.data(), |
1323 | function_param_types.size(), is_variadic, type_quals); |
1324 | |
1325 | if (type_name_cstr) { |
1326 | bool type_handled = false; |
1327 | if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) { |
1328 | ObjCLanguage::MethodName objc_method(type_name_cstr, true); |
1329 | if (objc_method.IsValid(true)) { |
1330 | CompilerType class_opaque_type; |
1331 | ConstString class_name(objc_method.GetClassName()); |
1332 | if (class_name) { |
1333 | TypeSP complete_objc_class_type_sp( |
1334 | dwarf->FindCompleteObjCDefinitionTypeForDIE( |
1335 | DWARFDIE(), class_name, false)); |
1336 | |
1337 | if (complete_objc_class_type_sp) { |
1338 | CompilerType type_clang_forward_type = |
1339 | complete_objc_class_type_sp->GetForwardCompilerType(); |
1340 | if (ClangASTContext::IsObjCObjectOrInterfaceType( |
1341 | type_clang_forward_type)) |
1342 | class_opaque_type = type_clang_forward_type; |
1343 | } |
1344 | } |
1345 | |
1346 | if (class_opaque_type) { |
1347 | // If accessibility isn't set to anything valid, assume public |
1348 | // for now... |
1349 | if (accessibility == eAccessNone) |
1350 | accessibility = eAccessPublic; |
1351 | |
1352 | clang::ObjCMethodDecl *objc_method_decl = |
1353 | m_ast.AddMethodToObjCObjectType( |
1354 | class_opaque_type, type_name_cstr, clang_type, |
1355 | accessibility, is_artificial, is_variadic); |
1356 | type_handled = objc_method_decl != NULL__null; |
1357 | if (type_handled) { |
1358 | LinkDeclContextToDIE( |
1359 | ClangASTContext::GetAsDeclContext(objc_method_decl), die); |
1360 | m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID()); |
1361 | } else { |
1362 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1363 | "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), " |
1364 | "please file a bug and attach the file at the start of " |
1365 | "this error message", |
1366 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
1367 | } |
1368 | } |
1369 | } else if (is_cxx_method) { |
1370 | // Look at the parent of this DIE and see if is is a class or |
1371 | // struct and see if this is actually a C++ method |
1372 | Type *class_type = dwarf->ResolveType(decl_ctx_die); |
1373 | if (class_type) { |
1374 | bool alternate_defn = false; |
1375 | if (class_type->GetID() != decl_ctx_die.GetID() || |
1376 | decl_ctx_die.GetContainingDWOModuleDIE()) { |
1377 | alternate_defn = true; |
1378 | |
1379 | // We uniqued the parent class of this function to another |
1380 | // class so we now need to associate all dies under |
1381 | // "decl_ctx_die" to DIEs in the DIE for "class_type"... |
1382 | SymbolFileDWARF *class_symfile = NULL__null; |
1383 | DWARFDIE class_type_die; |
1384 | |
1385 | SymbolFileDWARFDebugMap *debug_map_symfile = |
1386 | dwarf->GetDebugMapSymfile(); |
1387 | if (debug_map_symfile) { |
1388 | class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex( |
1389 | SymbolFileDWARFDebugMap::GetOSOIndexFromUserID( |
1390 | class_type->GetID())); |
1391 | class_type_die = class_symfile->DebugInfo()->GetDIE( |
1392 | DIERef(class_type->GetID(), dwarf)); |
1393 | } else { |
1394 | class_symfile = dwarf; |
Value stored to 'class_symfile' is never read | |
1395 | class_type_die = dwarf->DebugInfo()->GetDIE( |
1396 | DIERef(class_type->GetID(), dwarf)); |
1397 | } |
1398 | if (class_type_die) { |
1399 | DWARFDIECollection failures; |
1400 | |
1401 | CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die, |
1402 | class_type, failures); |
1403 | |
1404 | // FIXME do something with these failures that's smarter |
1405 | // than |
1406 | // just dropping them on the ground. Unfortunately classes |
1407 | // don't like having stuff added to them after their |
1408 | // definitions are complete... |
1409 | |
1410 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
1411 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1412 | type_sp = type_ptr->shared_from_this(); |
1413 | break; |
1414 | } |
1415 | } |
1416 | } |
1417 | |
1418 | if (specification_die_form.IsValid()) { |
1419 | // We have a specification which we are going to base our |
1420 | // function prototype off of, so we need this type to be |
1421 | // completed so that the m_die_to_decl_ctx for the method in |
1422 | // the specification has a valid clang decl context. |
1423 | class_type->GetForwardCompilerType(); |
1424 | // If we have a specification, then the function type should |
1425 | // have been made with the specification and not with this |
1426 | // die. |
1427 | DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE( |
1428 | DIERef(specification_die_form)); |
1429 | clang::DeclContext *spec_clang_decl_ctx = |
1430 | GetClangDeclContextForDIE(spec_die); |
1431 | if (spec_clang_decl_ctx) { |
1432 | LinkDeclContextToDIE(spec_clang_decl_ctx, die); |
1433 | } else { |
1434 | dwarf->GetObjectFile()->GetModule()->ReportWarning( |
1435 | "0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8" PRIx64"l" "x" |
1436 | ") has no decl\n", |
1437 | die.GetID(), specification_die_form.Reference()); |
1438 | } |
1439 | type_handled = true; |
1440 | } else if (abstract_origin_die_form.IsValid()) { |
1441 | // We have a specification which we are going to base our |
1442 | // function prototype off of, so we need this type to be |
1443 | // completed so that the m_die_to_decl_ctx for the method in |
1444 | // the abstract origin has a valid clang decl context. |
1445 | class_type->GetForwardCompilerType(); |
1446 | |
1447 | DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE( |
1448 | DIERef(abstract_origin_die_form)); |
1449 | clang::DeclContext *abs_clang_decl_ctx = |
1450 | GetClangDeclContextForDIE(abs_die); |
1451 | if (abs_clang_decl_ctx) { |
1452 | LinkDeclContextToDIE(abs_clang_decl_ctx, die); |
1453 | } else { |
1454 | dwarf->GetObjectFile()->GetModule()->ReportWarning( |
1455 | "0x%8.8" PRIx64"l" "x" ": DW_AT_abstract_origin(0x%8.8" PRIx64"l" "x" |
1456 | ") has no decl\n", |
1457 | die.GetID(), abstract_origin_die_form.Reference()); |
1458 | } |
1459 | type_handled = true; |
1460 | } else { |
1461 | CompilerType class_opaque_type = |
1462 | class_type->GetForwardCompilerType(); |
1463 | if (ClangASTContext::IsCXXClassType(class_opaque_type)) { |
1464 | if (class_opaque_type.IsBeingDefined() || alternate_defn) { |
1465 | if (!is_static && !die.HasChildren()) { |
1466 | // We have a C++ member function with no children (this |
1467 | // pointer!) and clang will get mad if we try and make |
1468 | // a function that isn't well formed in the DWARF, so |
1469 | // we will just skip it... |
1470 | type_handled = true; |
1471 | } else { |
1472 | bool add_method = true; |
1473 | if (alternate_defn) { |
1474 | // If an alternate definition for the class exists, |
1475 | // then add the method only if an equivalent is not |
1476 | // already present. |
1477 | clang::CXXRecordDecl *record_decl = |
1478 | m_ast.GetAsCXXRecordDecl( |
1479 | class_opaque_type.GetOpaqueQualType()); |
1480 | if (record_decl) { |
1481 | for (auto method_iter = record_decl->method_begin(); |
1482 | method_iter != record_decl->method_end(); |
1483 | method_iter++) { |
1484 | clang::CXXMethodDecl *method_decl = *method_iter; |
1485 | if (method_decl->getNameInfo().getAsString() == |
1486 | std::string(type_name_cstr)) { |
1487 | if (method_decl->getType() == |
1488 | ClangUtil::GetQualType(clang_type)) { |
1489 | add_method = false; |
1490 | LinkDeclContextToDIE( |
1491 | ClangASTContext::GetAsDeclContext( |
1492 | method_decl), |
1493 | die); |
1494 | type_handled = true; |
1495 | |
1496 | break; |
1497 | } |
1498 | } |
1499 | } |
1500 | } |
1501 | } |
1502 | |
1503 | if (add_method) { |
1504 | llvm::PrettyStackTraceFormat stack_trace( |
1505 | "SymbolFileDWARF::ParseType() is adding a method " |
1506 | "%s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s", |
1507 | type_name_cstr, |
1508 | class_type->GetName().GetCString(), die.GetID(), |
1509 | dwarf->GetObjectFile() |
1510 | ->GetFileSpec() |
1511 | .GetPath() |
1512 | .c_str()); |
1513 | |
1514 | const bool is_attr_used = false; |
1515 | // Neither GCC 4.2 nor clang++ currently set a valid |
1516 | // accessibility in the DWARF for C++ methods... |
1517 | // Default to public for now... |
1518 | if (accessibility == eAccessNone) |
1519 | accessibility = eAccessPublic; |
1520 | |
1521 | clang::CXXMethodDecl *cxx_method_decl = |
1522 | m_ast.AddMethodToCXXRecordType( |
1523 | class_opaque_type.GetOpaqueQualType(), |
1524 | type_name_cstr, mangled_name_cstr, clang_type, |
1525 | accessibility, is_virtual, is_static, |
1526 | is_inline, is_explicit, is_attr_used, |
1527 | is_artificial); |
1528 | |
1529 | type_handled = cxx_method_decl != NULL__null; |
1530 | |
1531 | if (type_handled) { |
1532 | LinkDeclContextToDIE( |
1533 | ClangASTContext::GetAsDeclContext( |
1534 | cxx_method_decl), |
1535 | die); |
1536 | |
1537 | ClangASTMetadata metadata; |
1538 | metadata.SetUserID(die.GetID()); |
1539 | |
1540 | if (!object_pointer_name.empty()) { |
1541 | metadata.SetObjectPtrName( |
1542 | object_pointer_name.c_str()); |
1543 | if (log) |
1544 | log->Printf( |
1545 | "Setting object pointer name: %s on method " |
1546 | "object %p.\n", |
1547 | object_pointer_name.c_str(), |
1548 | static_cast<void *>(cxx_method_decl)); |
1549 | } |
1550 | m_ast.SetMetadata(cxx_method_decl, metadata); |
1551 | } else { |
1552 | ignore_containing_context = true; |
1553 | } |
1554 | } |
1555 | } |
1556 | } else { |
1557 | // We were asked to parse the type for a method in a |
1558 | // class, yet the class hasn't been asked to complete |
1559 | // itself through the clang::ExternalASTSource protocol, |
1560 | // so we need to just have the class complete itself and |
1561 | // do things the right way, then our |
1562 | // DIE should then have an entry in the |
1563 | // dwarf->GetDIEToType() map. First |
1564 | // we need to modify the dwarf->GetDIEToType() so it |
1565 | // doesn't think we are trying to parse this DIE |
1566 | // anymore... |
1567 | dwarf->GetDIEToType()[die.GetDIE()] = NULL__null; |
1568 | |
1569 | // Now we get the full type to force our class type to |
1570 | // complete itself using the clang::ExternalASTSource |
1571 | // protocol which will parse all base classes and all |
1572 | // methods (including the method for this DIE). |
1573 | class_type->GetFullCompilerType(); |
1574 | |
1575 | // The type for this DIE should have been filled in the |
1576 | // function call above |
1577 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
1578 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1579 | type_sp = type_ptr->shared_from_this(); |
1580 | break; |
1581 | } |
1582 | |
1583 | // FIXME This is fixing some even uglier behavior but we |
1584 | // really need to |
1585 | // uniq the methods of each class as well as the class |
1586 | // itself. <rdar://problem/11240464> |
1587 | type_handled = true; |
1588 | } |
1589 | } |
1590 | } |
1591 | } |
1592 | } |
1593 | } |
1594 | |
1595 | if (!type_handled) { |
1596 | clang::FunctionDecl *function_decl = nullptr; |
1597 | |
1598 | if (abstract_origin_die_form.IsValid()) { |
1599 | DWARFDIE abs_die = |
1600 | dwarf->DebugInfo()->GetDIE(DIERef(abstract_origin_die_form)); |
1601 | |
1602 | SymbolContext sc; |
1603 | |
1604 | if (dwarf->ResolveType(abs_die)) { |
1605 | function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>( |
1606 | GetCachedClangDeclContextForDIE(abs_die)); |
1607 | |
1608 | if (function_decl) { |
1609 | LinkDeclContextToDIE(function_decl, die); |
1610 | } |
1611 | } |
1612 | } |
1613 | |
1614 | if (!function_decl) { |
1615 | // We just have a function that isn't part of a class |
1616 | function_decl = m_ast.CreateFunctionDeclaration( |
1617 | ignore_containing_context ? m_ast.GetTranslationUnitDecl() |
1618 | : containing_decl_ctx, |
1619 | type_name_cstr, clang_type, storage, is_inline); |
1620 | |
1621 | if (has_template_params) { |
1622 | ClangASTContext::TemplateParameterInfos template_param_infos; |
1623 | ParseTemplateParameterInfos(die, template_param_infos); |
1624 | clang::FunctionTemplateDecl *func_template_decl = |
1625 | m_ast.CreateFunctionTemplateDecl( |
1626 | containing_decl_ctx, function_decl, type_name_cstr, |
1627 | template_param_infos); |
1628 | m_ast.CreateFunctionTemplateSpecializationInfo( |
1629 | function_decl, func_template_decl, template_param_infos); |
1630 | } |
1631 | |
1632 | lldbassert(function_decl)lldb_private::lldb_assert(static_cast<bool>(function_decl ), "function_decl", __FUNCTION__, "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1632); |
1633 | |
1634 | if (function_decl) { |
1635 | LinkDeclContextToDIE(function_decl, die); |
1636 | |
1637 | if (!function_param_decls.empty()) |
1638 | m_ast.SetFunctionParameters(function_decl, |
1639 | &function_param_decls.front(), |
1640 | function_param_decls.size()); |
1641 | |
1642 | ClangASTMetadata metadata; |
1643 | metadata.SetUserID(die.GetID()); |
1644 | |
1645 | if (!object_pointer_name.empty()) { |
1646 | metadata.SetObjectPtrName(object_pointer_name.c_str()); |
1647 | if (log) |
1648 | log->Printf("Setting object pointer name: %s on function " |
1649 | "object %p.", |
1650 | object_pointer_name.c_str(), |
1651 | static_cast<void *>(function_decl)); |
1652 | } |
1653 | m_ast.SetMetadata(function_decl, metadata); |
1654 | } |
1655 | } |
1656 | } |
1657 | } |
1658 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 0, NULL__null, |
1659 | LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingIsUID, &decl, |
1660 | clang_type, Type::eResolveStateFull)); |
1661 | assert(type_sp.get())((type_sp.get()) ? static_cast<void> (0) : __assert_fail ("type_sp.get()", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1661, __PRETTY_FUNCTION__)); |
1662 | } break; |
1663 | |
1664 | case DW_TAG_array_type: { |
1665 | // Set a bit that lets us know that we are currently parsing this |
1666 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
1667 | |
1668 | DWARFFormValue type_die_form; |
1669 | int64_t first_index = 0; |
1670 | uint32_t byte_stride = 0; |
1671 | uint32_t bit_stride = 0; |
1672 | bool is_vector = false; |
1673 | const size_t num_attributes = die.GetAttributes(attributes); |
1674 | |
1675 | if (num_attributes > 0) { |
1676 | uint32_t i; |
1677 | for (i = 0; i < num_attributes; ++i) { |
1678 | attr = attributes.AttributeAtIndex(i); |
1679 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1680 | switch (attr) { |
1681 | case DW_AT_decl_file: |
1682 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
1683 | form_value.Unsigned())); |
1684 | break; |
1685 | case DW_AT_decl_line: |
1686 | decl.SetLine(form_value.Unsigned()); |
1687 | break; |
1688 | case DW_AT_decl_column: |
1689 | decl.SetColumn(form_value.Unsigned()); |
1690 | break; |
1691 | case DW_AT_name: |
1692 | type_name_cstr = form_value.AsCString(); |
1693 | type_name_const_str.SetCString(type_name_cstr); |
1694 | break; |
1695 | |
1696 | case DW_AT_type: |
1697 | type_die_form = form_value; |
1698 | break; |
1699 | case DW_AT_byte_size: |
1700 | break; // byte_size = form_value.Unsigned(); break; |
1701 | case DW_AT_byte_stride: |
1702 | byte_stride = form_value.Unsigned(); |
1703 | break; |
1704 | case DW_AT_bit_stride: |
1705 | bit_stride = form_value.Unsigned(); |
1706 | break; |
1707 | case DW_AT_GNU_vector: |
1708 | is_vector = form_value.Boolean(); |
1709 | break; |
1710 | case DW_AT_accessibility: |
1711 | break; // accessibility = |
1712 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
1713 | case DW_AT_declaration: |
1714 | break; // is_forward_declaration = form_value.Boolean(); break; |
1715 | case DW_AT_allocated: |
1716 | case DW_AT_associated: |
1717 | case DW_AT_data_location: |
1718 | case DW_AT_description: |
1719 | case DW_AT_ordering: |
1720 | case DW_AT_start_scope: |
1721 | case DW_AT_visibility: |
1722 | case DW_AT_specification: |
1723 | case DW_AT_abstract_origin: |
1724 | case DW_AT_sibling: |
1725 | break; |
1726 | } |
1727 | } |
1728 | } |
1729 | |
1730 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1731 | DW_TAG_value_to_name(tag), type_name_cstr); |
1732 | |
1733 | DIERef type_die_ref(type_die_form); |
1734 | Type *element_type = dwarf->ResolveTypeUID(type_die_ref); |
1735 | |
1736 | if (element_type) { |
1737 | std::vector<uint64_t> element_orders; |
1738 | ParseChildArrayInfo(sc, die, first_index, element_orders, |
1739 | byte_stride, bit_stride); |
1740 | if (byte_stride == 0 && bit_stride == 0) |
1741 | byte_stride = element_type->GetByteSize(); |
1742 | CompilerType array_element_type = |
1743 | element_type->GetForwardCompilerType(); |
1744 | |
1745 | if (ClangASTContext::IsCXXClassType(array_element_type) && |
1746 | array_element_type.GetCompleteType() == false) { |
1747 | ModuleSP module_sp = die.GetModule(); |
1748 | if (module_sp) { |
1749 | if (die.GetCU()->GetProducer() == eProducerClang) |
1750 | module_sp->ReportError( |
1751 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
1752 | "class/union/struct element type DIE 0x%8.8x that is a " |
1753 | "forward declaration, not a complete definition.\nTry " |
1754 | "compiling the source file with -fstandalone-debug or " |
1755 | "disable -gmodules", |
1756 | die.GetOffset(), type_die_ref.die_offset); |
1757 | else |
1758 | module_sp->ReportError( |
1759 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
1760 | "class/union/struct element type DIE 0x%8.8x that is a " |
1761 | "forward declaration, not a complete definition.\nPlease " |
1762 | "file a bug against the compiler and include the " |
1763 | "preprocessed output for %s", |
1764 | die.GetOffset(), type_die_ref.die_offset, |
1765 | die.GetLLDBCompileUnit() |
1766 | ? die.GetLLDBCompileUnit()->GetPath().c_str() |
1767 | : "the source file"); |
1768 | } |
1769 | |
1770 | // We have no choice other than to pretend that the element class |
1771 | // type is complete. If we don't do this, clang will crash when |
1772 | // trying to layout the class. Since we provide layout |
1773 | // assistance, all ivars in this class and other classes will be |
1774 | // fine, this is the best we can do short of crashing. |
1775 | if (ClangASTContext::StartTagDeclarationDefinition( |
1776 | array_element_type)) { |
1777 | ClangASTContext::CompleteTagDeclarationDefinition( |
1778 | array_element_type); |
1779 | } else { |
1780 | module_sp->ReportError("DWARF DIE at 0x%8.8x was not able to " |
1781 | "start its definition.\nPlease file a " |
1782 | "bug and attach the file at the start " |
1783 | "of this error message", |
1784 | type_die_ref.die_offset); |
1785 | } |
1786 | } |
1787 | |
1788 | uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; |
1789 | if (element_orders.size() > 0) { |
1790 | uint64_t num_elements = 0; |
1791 | std::vector<uint64_t>::const_reverse_iterator pos; |
1792 | std::vector<uint64_t>::const_reverse_iterator end = |
1793 | element_orders.rend(); |
1794 | for (pos = element_orders.rbegin(); pos != end; ++pos) { |
1795 | num_elements = *pos; |
1796 | clang_type = m_ast.CreateArrayType(array_element_type, |
1797 | num_elements, is_vector); |
1798 | array_element_type = clang_type; |
1799 | array_element_bit_stride = |
1800 | num_elements ? array_element_bit_stride * num_elements |
1801 | : array_element_bit_stride; |
1802 | } |
1803 | } else { |
1804 | clang_type = |
1805 | m_ast.CreateArrayType(array_element_type, 0, is_vector); |
1806 | } |
1807 | ConstString empty_name; |
1808 | type_sp.reset(new Type( |
1809 | die.GetID(), dwarf, empty_name, array_element_bit_stride / 8, |
1810 | NULL__null, DIERef(type_die_form).GetUID(dwarf), Type::eEncodingIsUID, |
1811 | &decl, clang_type, Type::eResolveStateFull)); |
1812 | type_sp->SetEncodingType(element_type); |
1813 | } |
1814 | } |
1815 | } break; |
1816 | |
1817 | case DW_TAG_ptr_to_member_type: { |
1818 | DWARFFormValue type_die_form; |
1819 | DWARFFormValue containing_type_die_form; |
1820 | |
1821 | const size_t num_attributes = die.GetAttributes(attributes); |
1822 | |
1823 | if (num_attributes > 0) { |
1824 | uint32_t i; |
1825 | for (i = 0; i < num_attributes; ++i) { |
1826 | attr = attributes.AttributeAtIndex(i); |
1827 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1828 | switch (attr) { |
1829 | case DW_AT_type: |
1830 | type_die_form = form_value; |
1831 | break; |
1832 | case DW_AT_containing_type: |
1833 | containing_type_die_form = form_value; |
1834 | break; |
1835 | } |
1836 | } |
1837 | } |
1838 | |
1839 | Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
1840 | Type *class_type = |
1841 | dwarf->ResolveTypeUID(DIERef(containing_type_die_form)); |
1842 | |
1843 | CompilerType pointee_clang_type = |
1844 | pointee_type->GetForwardCompilerType(); |
1845 | CompilerType class_clang_type = class_type->GetLayoutCompilerType(); |
1846 | |
1847 | clang_type = ClangASTContext::CreateMemberPointerType( |
1848 | class_clang_type, pointee_clang_type); |
1849 | |
1850 | byte_size = clang_type.GetByteSize(nullptr); |
1851 | |
1852 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
1853 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
1854 | Type::eEncodingIsUID, NULL__null, clang_type, |
1855 | Type::eResolveStateForward)); |
1856 | } |
1857 | |
1858 | break; |
1859 | } |
1860 | default: |
1861 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1862 | "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and " |
1863 | "attach the file at the start of this error message", |
1864 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
1865 | break; |
1866 | } |
1867 | |
1868 | if (type_sp.get()) { |
1869 | DWARFDIE sc_parent_die = |
1870 | SymbolFileDWARF::GetParentSymbolContextDIE(die); |
1871 | dw_tag_t sc_parent_tag = sc_parent_die.Tag(); |
1872 | |
1873 | SymbolContextScope *symbol_context_scope = NULL__null; |
1874 | if (sc_parent_tag == DW_TAG_compile_unit || |
1875 | sc_parent_tag == DW_TAG_partial_unit) { |
1876 | symbol_context_scope = sc.comp_unit; |
1877 | } else if (sc.function != NULL__null && sc_parent_die) { |
1878 | symbol_context_scope = |
1879 | sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); |
1880 | if (symbol_context_scope == NULL__null) |
1881 | symbol_context_scope = sc.function; |
1882 | } |
1883 | |
1884 | if (symbol_context_scope != NULL__null) { |
1885 | type_sp->SetSymbolContextScope(symbol_context_scope); |
1886 | } |
1887 | |
1888 | // We are ready to put this type into the uniqued list up at the module |
1889 | // level |
1890 | type_list->Insert(type_sp); |
1891 | |
1892 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
1893 | } |
1894 | } else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1895 | type_sp = type_ptr->shared_from_this(); |
1896 | } |
1897 | } |
1898 | return type_sp; |
1899 | } |
1900 | |
1901 | // DWARF parsing functions |
1902 | |
1903 | class DWARFASTParserClang::DelayedAddObjCClassProperty { |
1904 | public: |
1905 | DelayedAddObjCClassProperty( |
1906 | const CompilerType &class_opaque_type, const char *property_name, |
1907 | const CompilerType &property_opaque_type, // The property type is only |
1908 | // required if you don't have an |
1909 | // ivar decl |
1910 | clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name, |
1911 | const char *property_getter_name, uint32_t property_attributes, |
1912 | const ClangASTMetadata *metadata) |
1913 | : m_class_opaque_type(class_opaque_type), m_property_name(property_name), |
1914 | m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl), |
1915 | m_property_setter_name(property_setter_name), |
1916 | m_property_getter_name(property_getter_name), |
1917 | m_property_attributes(property_attributes) { |
1918 | if (metadata != NULL__null) { |
1919 | m_metadata_ap.reset(new ClangASTMetadata()); |
1920 | *m_metadata_ap = *metadata; |
1921 | } |
1922 | } |
1923 | |
1924 | DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs) { |
1925 | *this = rhs; |
1926 | } |
1927 | |
1928 | DelayedAddObjCClassProperty & |
1929 | operator=(const DelayedAddObjCClassProperty &rhs) { |
1930 | m_class_opaque_type = rhs.m_class_opaque_type; |
1931 | m_property_name = rhs.m_property_name; |
1932 | m_property_opaque_type = rhs.m_property_opaque_type; |
1933 | m_ivar_decl = rhs.m_ivar_decl; |
1934 | m_property_setter_name = rhs.m_property_setter_name; |
1935 | m_property_getter_name = rhs.m_property_getter_name; |
1936 | m_property_attributes = rhs.m_property_attributes; |
1937 | |
1938 | if (rhs.m_metadata_ap.get()) { |
1939 | m_metadata_ap.reset(new ClangASTMetadata()); |
1940 | *m_metadata_ap = *rhs.m_metadata_ap; |
1941 | } |
1942 | return *this; |
1943 | } |
1944 | |
1945 | bool Finalize() { |
1946 | return ClangASTContext::AddObjCClassProperty( |
1947 | m_class_opaque_type, m_property_name, m_property_opaque_type, |
1948 | m_ivar_decl, m_property_setter_name, m_property_getter_name, |
1949 | m_property_attributes, m_metadata_ap.get()); |
1950 | } |
1951 | |
1952 | private: |
1953 | CompilerType m_class_opaque_type; |
1954 | const char *m_property_name; |
1955 | CompilerType m_property_opaque_type; |
1956 | clang::ObjCIvarDecl *m_ivar_decl; |
1957 | const char *m_property_setter_name; |
1958 | const char *m_property_getter_name; |
1959 | uint32_t m_property_attributes; |
1960 | std::unique_ptr<ClangASTMetadata> m_metadata_ap; |
1961 | }; |
1962 | |
1963 | bool DWARFASTParserClang::ParseTemplateDIE( |
1964 | const DWARFDIE &die, |
1965 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
1966 | const dw_tag_t tag = die.Tag(); |
1967 | bool is_template_template_argument = false; |
1968 | |
1969 | switch (tag) { |
1970 | case DW_TAG_GNU_template_parameter_pack: { |
1971 | template_param_infos.packed_args.reset( |
1972 | new ClangASTContext::TemplateParameterInfos); |
1973 | for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid(); |
1974 | child_die = child_die.GetSibling()) { |
1975 | if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args)) |
1976 | return false; |
1977 | } |
1978 | if (const char *name = die.GetName()) { |
1979 | template_param_infos.pack_name = name; |
1980 | } |
1981 | return true; |
1982 | } |
1983 | case DW_TAG_GNU_template_template_param: |
1984 | is_template_template_argument = true; |
1985 | LLVM_FALLTHROUGH[[clang::fallthrough]]; |
1986 | case DW_TAG_template_type_parameter: |
1987 | case DW_TAG_template_value_parameter: { |
1988 | DWARFAttributes attributes; |
1989 | const size_t num_attributes = die.GetAttributes(attributes); |
1990 | const char *name = nullptr; |
1991 | const char *template_name = nullptr; |
1992 | CompilerType clang_type; |
1993 | uint64_t uval64 = 0; |
1994 | bool uval64_valid = false; |
1995 | if (num_attributes > 0) { |
1996 | DWARFFormValue form_value; |
1997 | for (size_t i = 0; i < num_attributes; ++i) { |
1998 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
1999 | |
2000 | switch (attr) { |
2001 | case DW_AT_name: |
2002 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2003 | name = form_value.AsCString(); |
2004 | break; |
2005 | |
2006 | case DW_AT_GNU_template_name: |
2007 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2008 | template_name = form_value.AsCString(); |
2009 | break; |
2010 | |
2011 | case DW_AT_type: |
2012 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2013 | Type *lldb_type = die.ResolveTypeUID(DIERef(form_value)); |
2014 | if (lldb_type) |
2015 | clang_type = lldb_type->GetForwardCompilerType(); |
2016 | } |
2017 | break; |
2018 | |
2019 | case DW_AT_const_value: |
2020 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2021 | uval64_valid = true; |
2022 | uval64 = form_value.Unsigned(); |
2023 | } |
2024 | break; |
2025 | default: |
2026 | break; |
2027 | } |
2028 | } |
2029 | |
2030 | clang::ASTContext *ast = m_ast.getASTContext(); |
2031 | if (!clang_type) |
2032 | clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
2033 | |
2034 | if (!is_template_template_argument) { |
2035 | bool is_signed = false; |
2036 | if (name && name[0]) |
2037 | template_param_infos.names.push_back(name); |
2038 | else |
2039 | template_param_infos.names.push_back(NULL__null); |
2040 | |
2041 | // Get the signed value for any integer or enumeration if available |
2042 | clang_type.IsIntegerOrEnumerationType(is_signed); |
2043 | |
2044 | if (tag == DW_TAG_template_value_parameter && uval64_valid) { |
2045 | llvm::APInt apint(clang_type.GetBitSize(nullptr), uval64, is_signed); |
2046 | template_param_infos.args.push_back( |
2047 | clang::TemplateArgument(*ast, llvm::APSInt(apint, !is_signed), |
2048 | ClangUtil::GetQualType(clang_type))); |
2049 | } else { |
2050 | template_param_infos.args.push_back( |
2051 | clang::TemplateArgument(ClangUtil::GetQualType(clang_type))); |
2052 | } |
2053 | } else { |
2054 | auto *tplt_type = m_ast.CreateTemplateTemplateParmDecl(template_name); |
2055 | template_param_infos.names.push_back(name); |
2056 | template_param_infos.args.push_back( |
2057 | clang::TemplateArgument(clang::TemplateName(tplt_type))); |
2058 | } |
2059 | } |
2060 | } |
2061 | return true; |
2062 | |
2063 | default: |
2064 | break; |
2065 | } |
2066 | return false; |
2067 | } |
2068 | |
2069 | bool DWARFASTParserClang::ParseTemplateParameterInfos( |
2070 | const DWARFDIE &parent_die, |
2071 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
2072 | |
2073 | if (!parent_die) |
2074 | return false; |
2075 | |
2076 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2077 | die = die.GetSibling()) { |
2078 | const dw_tag_t tag = die.Tag(); |
2079 | |
2080 | switch (tag) { |
2081 | case DW_TAG_template_type_parameter: |
2082 | case DW_TAG_template_value_parameter: |
2083 | case DW_TAG_GNU_template_parameter_pack: |
2084 | case DW_TAG_GNU_template_template_param: |
2085 | ParseTemplateDIE(die, template_param_infos); |
2086 | break; |
2087 | |
2088 | default: |
2089 | break; |
2090 | } |
2091 | } |
2092 | if (template_param_infos.args.empty()) |
2093 | return false; |
2094 | return template_param_infos.args.size() == template_param_infos.names.size(); |
2095 | } |
2096 | |
2097 | bool DWARFASTParserClang::CompleteTypeFromDWARF(const DWARFDIE &die, |
2098 | lldb_private::Type *type, |
2099 | CompilerType &clang_type) { |
2100 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
2101 | |
2102 | std::lock_guard<std::recursive_mutex> guard( |
2103 | dwarf->GetObjectFile()->GetModule()->GetMutex()); |
2104 | |
2105 | // Disable external storage for this type so we don't get anymore |
2106 | // clang::ExternalASTSource queries for this type. |
2107 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false); |
2108 | |
2109 | if (!die) |
2110 | return false; |
2111 | |
2112 | #if defined LLDB_CONFIGURATION_DEBUG |
2113 | //---------------------------------------------------------------------- |
2114 | // For debugging purposes, the LLDB_DWARF_DONT_COMPLETE_TYPENAMES environment |
2115 | // variable can be set with one or more typenames separated by ';' |
2116 | // characters. This will cause this function to not complete any types whose |
2117 | // names match. |
2118 | // |
2119 | // Examples of setting this environment variable: |
2120 | // |
2121 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo |
2122 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo;Bar;Baz |
2123 | //---------------------------------------------------------------------- |
2124 | const char *dont_complete_typenames_cstr = |
2125 | getenv("LLDB_DWARF_DONT_COMPLETE_TYPENAMES"); |
2126 | if (dont_complete_typenames_cstr && dont_complete_typenames_cstr[0]) { |
2127 | const char *die_name = die.GetName(); |
2128 | if (die_name && die_name[0]) { |
2129 | const char *match = strstr(dont_complete_typenames_cstr, die_name); |
2130 | if (match) { |
2131 | size_t die_name_length = strlen(die_name); |
2132 | while (match) { |
2133 | const char separator_char = ';'; |
2134 | const char next_char = match[die_name_length]; |
2135 | if (next_char == '\0' || next_char == separator_char) { |
2136 | if (match == dont_complete_typenames_cstr || |
2137 | match[-1] == separator_char) |
2138 | return false; |
2139 | } |
2140 | match = strstr(match + 1, die_name); |
2141 | } |
2142 | } |
2143 | } |
2144 | } |
2145 | #endif |
2146 | |
2147 | const dw_tag_t tag = die.Tag(); |
2148 | |
2149 | Log *log = |
2150 | nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); |
2151 | if (log) |
2152 | dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( |
2153 | log, "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...", |
2154 | die.GetID(), die.GetTagAsCString(), type->GetName().AsCString()); |
2155 | assert(clang_type)((clang_type) ? static_cast<void> (0) : __assert_fail ( "clang_type", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2155, __PRETTY_FUNCTION__)); |
2156 | DWARFAttributes attributes; |
2157 | switch (tag) { |
2158 | case DW_TAG_structure_type: |
2159 | case DW_TAG_union_type: |
2160 | case DW_TAG_class_type: { |
2161 | ClangASTImporter::LayoutInfo layout_info; |
2162 | |
2163 | { |
2164 | if (die.HasChildren()) { |
2165 | LanguageType class_language = eLanguageTypeUnknown; |
2166 | if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) { |
2167 | class_language = eLanguageTypeObjC; |
2168 | // For objective C we don't start the definition when the class is |
2169 | // created. |
2170 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
2171 | } |
2172 | |
2173 | int tag_decl_kind = -1; |
2174 | AccessType default_accessibility = eAccessNone; |
2175 | if (tag == DW_TAG_structure_type) { |
2176 | tag_decl_kind = clang::TTK_Struct; |
2177 | default_accessibility = eAccessPublic; |
2178 | } else if (tag == DW_TAG_union_type) { |
2179 | tag_decl_kind = clang::TTK_Union; |
2180 | default_accessibility = eAccessPublic; |
2181 | } else if (tag == DW_TAG_class_type) { |
2182 | tag_decl_kind = clang::TTK_Class; |
2183 | default_accessibility = eAccessPrivate; |
2184 | } |
2185 | |
2186 | SymbolContext sc(die.GetLLDBCompileUnit()); |
2187 | std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> bases; |
2188 | std::vector<int> member_accessibilities; |
2189 | bool is_a_class = false; |
2190 | // Parse members and base classes first |
2191 | DWARFDIECollection member_function_dies; |
2192 | |
2193 | DelayedPropertyList delayed_properties; |
2194 | ParseChildMembers(sc, die, clang_type, class_language, bases, |
2195 | member_accessibilities, member_function_dies, |
2196 | delayed_properties, default_accessibility, is_a_class, |
2197 | layout_info); |
2198 | |
2199 | // Now parse any methods if there were any... |
2200 | size_t num_functions = member_function_dies.Size(); |
2201 | if (num_functions > 0) { |
2202 | for (size_t i = 0; i < num_functions; ++i) { |
2203 | dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i)); |
2204 | } |
2205 | } |
2206 | |
2207 | if (class_language == eLanguageTypeObjC) { |
2208 | ConstString class_name(clang_type.GetTypeName()); |
2209 | if (class_name) { |
2210 | DIEArray method_die_offsets; |
2211 | dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); |
2212 | |
2213 | if (!method_die_offsets.empty()) { |
2214 | DWARFDebugInfo *debug_info = dwarf->DebugInfo(); |
2215 | |
2216 | const size_t num_matches = method_die_offsets.size(); |
2217 | for (size_t i = 0; i < num_matches; ++i) { |
2218 | const DIERef &die_ref = method_die_offsets[i]; |
2219 | DWARFDIE method_die = debug_info->GetDIE(die_ref); |
2220 | |
2221 | if (method_die) |
2222 | method_die.ResolveType(); |
2223 | } |
2224 | } |
2225 | |
2226 | for (DelayedPropertyList::iterator pi = delayed_properties.begin(), |
2227 | pe = delayed_properties.end(); |
2228 | pi != pe; ++pi) |
2229 | pi->Finalize(); |
2230 | } |
2231 | } |
2232 | |
2233 | // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we |
2234 | // need to tell the clang type it is actually a class. |
2235 | if (class_language != eLanguageTypeObjC) { |
2236 | if (is_a_class && tag_decl_kind != clang::TTK_Class) |
2237 | m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type), |
2238 | clang::TTK_Class); |
2239 | } |
2240 | |
2241 | // Since DW_TAG_structure_type gets used for both classes and |
2242 | // structures, we may need to set any DW_TAG_member fields to have a |
2243 | // "private" access if none was specified. When we parsed the child |
2244 | // members we tracked that actual accessibility value for each |
2245 | // DW_TAG_member in the "member_accessibilities" array. If the value |
2246 | // for the member is zero, then it was set to the |
2247 | // "default_accessibility" which for structs was "public". Below we |
2248 | // correct this by setting any fields to "private" that weren't |
2249 | // correctly set. |
2250 | if (is_a_class && !member_accessibilities.empty()) { |
2251 | // This is a class and all members that didn't have their access |
2252 | // specified are private. |
2253 | m_ast.SetDefaultAccessForRecordFields( |
2254 | m_ast.GetAsRecordDecl(clang_type), eAccessPrivate, |
2255 | &member_accessibilities.front(), member_accessibilities.size()); |
2256 | } |
2257 | |
2258 | if (!bases.empty()) { |
2259 | // Make sure all base classes refer to complete types and not forward |
2260 | // declarations. If we don't do this, clang will crash with an |
2261 | // assertion in the call to clang_type.TransferBaseClasses() |
2262 | for (const auto &base_class : bases) { |
2263 | clang::TypeSourceInfo *type_source_info = |
2264 | base_class->getTypeSourceInfo(); |
2265 | if (type_source_info) { |
2266 | CompilerType base_class_type( |
2267 | &m_ast, type_source_info->getType().getAsOpaquePtr()); |
2268 | if (base_class_type.GetCompleteType() == false) { |
2269 | auto module = dwarf->GetObjectFile()->GetModule(); |
2270 | module->ReportError(":: Class '%s' has a base class '%s' which " |
2271 | "does not have a complete definition.", |
2272 | die.GetName(), |
2273 | base_class_type.GetTypeName().GetCString()); |
2274 | if (die.GetCU()->GetProducer() == eProducerClang) |
2275 | module->ReportError(":: Try compiling the source file with " |
2276 | "-fstandalone-debug."); |
2277 | |
2278 | // We have no choice other than to pretend that the base class |
2279 | // is complete. If we don't do this, clang will crash when we |
2280 | // call setBases() inside of |
2281 | // "clang_type.TransferBaseClasses()" below. Since we |
2282 | // provide layout assistance, all ivars in this class and other |
2283 | // classes will be fine, this is the best we can do short of |
2284 | // crashing. |
2285 | if (ClangASTContext::StartTagDeclarationDefinition( |
2286 | base_class_type)) { |
2287 | ClangASTContext::CompleteTagDeclarationDefinition( |
2288 | base_class_type); |
2289 | } |
2290 | } |
2291 | } |
2292 | } |
2293 | |
2294 | m_ast.TransferBaseClasses(clang_type.GetOpaqueQualType(), |
2295 | std::move(bases)); |
2296 | } |
2297 | } |
2298 | } |
2299 | |
2300 | m_ast.AddMethodOverridesForCXXRecordType(clang_type.GetOpaqueQualType()); |
2301 | ClangASTContext::BuildIndirectFields(clang_type); |
2302 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
2303 | |
2304 | if (!layout_info.field_offsets.empty() || |
2305 | !layout_info.base_offsets.empty() || |
2306 | !layout_info.vbase_offsets.empty()) { |
2307 | if (type) |
2308 | layout_info.bit_size = type->GetByteSize() * 8; |
2309 | if (layout_info.bit_size == 0) |
2310 | layout_info.bit_size = |
2311 | die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; |
2312 | |
2313 | clang::CXXRecordDecl *record_decl = |
2314 | m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); |
2315 | if (record_decl) { |
2316 | if (log) { |
2317 | ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); |
2318 | |
2319 | if (module_sp) { |
2320 | module_sp->LogMessage( |
2321 | log, |
2322 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) " |
2323 | "caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u" |
2324 | ", alignment = %" PRIu64"l" "u" |
2325 | ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", |
2326 | static_cast<void *>(clang_type.GetOpaqueQualType()), |
2327 | static_cast<void *>(record_decl), layout_info.bit_size, |
2328 | layout_info.alignment, |
2329 | static_cast<uint32_t>(layout_info.field_offsets.size()), |
2330 | static_cast<uint32_t>(layout_info.base_offsets.size()), |
2331 | static_cast<uint32_t>(layout_info.vbase_offsets.size())); |
2332 | |
2333 | uint32_t idx; |
2334 | { |
2335 | llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator |
2336 | pos, |
2337 | end = layout_info.field_offsets.end(); |
2338 | for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; |
2339 | ++pos, ++idx) { |
2340 | module_sp->LogMessage( |
2341 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2342 | "%p) field[%u] = { bit_offset=%u, name='%s' }", |
2343 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
2344 | static_cast<uint32_t>(pos->second), |
2345 | pos->first->getNameAsString().c_str()); |
2346 | } |
2347 | } |
2348 | |
2349 | { |
2350 | llvm::DenseMap<const clang::CXXRecordDecl *, |
2351 | clang::CharUnits>::const_iterator base_pos, |
2352 | base_end = layout_info.base_offsets.end(); |
2353 | for (idx = 0, base_pos = layout_info.base_offsets.begin(); |
2354 | base_pos != base_end; ++base_pos, ++idx) { |
2355 | module_sp->LogMessage( |
2356 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2357 | "%p) base[%u] = { byte_offset=%u, name='%s' }", |
2358 | clang_type.GetOpaqueQualType(), idx, |
2359 | (uint32_t)base_pos->second.getQuantity(), |
2360 | base_pos->first->getNameAsString().c_str()); |
2361 | } |
2362 | } |
2363 | { |
2364 | llvm::DenseMap<const clang::CXXRecordDecl *, |
2365 | clang::CharUnits>::const_iterator vbase_pos, |
2366 | vbase_end = layout_info.vbase_offsets.end(); |
2367 | for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); |
2368 | vbase_pos != vbase_end; ++vbase_pos, ++idx) { |
2369 | module_sp->LogMessage( |
2370 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2371 | "%p) vbase[%u] = { byte_offset=%u, name='%s' }", |
2372 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
2373 | static_cast<uint32_t>(vbase_pos->second.getQuantity()), |
2374 | vbase_pos->first->getNameAsString().c_str()); |
2375 | } |
2376 | } |
2377 | } |
2378 | } |
2379 | GetClangASTImporter().InsertRecordDecl(record_decl, layout_info); |
2380 | } |
2381 | } |
2382 | } |
2383 | |
2384 | return (bool)clang_type; |
2385 | |
2386 | case DW_TAG_enumeration_type: |
2387 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
2388 | if (die.HasChildren()) { |
2389 | SymbolContext sc(die.GetLLDBCompileUnit()); |
2390 | bool is_signed = false; |
2391 | clang_type.IsIntegerType(is_signed); |
2392 | ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), |
2393 | die); |
2394 | } |
2395 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
2396 | } |
2397 | return (bool)clang_type; |
2398 | |
2399 | default: |
2400 | assert(false && "not a forward clang type decl!")((false && "not a forward clang type decl!") ? static_cast <void> (0) : __assert_fail ("false && \"not a forward clang type decl!\"" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2400, __PRETTY_FUNCTION__)); |
2401 | break; |
2402 | } |
2403 | |
2404 | return false; |
2405 | } |
2406 | |
2407 | std::vector<DWARFDIE> DWARFASTParserClang::GetDIEForDeclContext( |
2408 | lldb_private::CompilerDeclContext decl_context) { |
2409 | std::vector<DWARFDIE> result; |
2410 | for (auto it = m_decl_ctx_to_die.find( |
2411 | (clang::DeclContext *)decl_context.GetOpaqueDeclContext()); |
2412 | it != m_decl_ctx_to_die.end(); it++) |
2413 | result.push_back(it->second); |
2414 | return result; |
2415 | } |
2416 | |
2417 | CompilerDecl DWARFASTParserClang::GetDeclForUIDFromDWARF(const DWARFDIE &die) { |
2418 | clang::Decl *clang_decl = GetClangDeclForDIE(die); |
2419 | if (clang_decl != nullptr) |
2420 | return CompilerDecl(&m_ast, clang_decl); |
2421 | return CompilerDecl(); |
2422 | } |
2423 | |
2424 | CompilerDeclContext |
2425 | DWARFASTParserClang::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) { |
2426 | clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die); |
2427 | if (clang_decl_ctx) |
2428 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2429 | return CompilerDeclContext(); |
2430 | } |
2431 | |
2432 | CompilerDeclContext |
2433 | DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) { |
2434 | clang::DeclContext *clang_decl_ctx = |
2435 | GetClangDeclContextContainingDIE(die, nullptr); |
2436 | if (clang_decl_ctx) |
2437 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2438 | return CompilerDeclContext(); |
2439 | } |
2440 | |
2441 | size_t DWARFASTParserClang::ParseChildEnumerators( |
2442 | const SymbolContext &sc, lldb_private::CompilerType &clang_type, |
2443 | bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die) { |
2444 | if (!parent_die) |
2445 | return 0; |
2446 | |
2447 | size_t enumerators_added = 0; |
2448 | |
2449 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2450 | die = die.GetSibling()) { |
2451 | const dw_tag_t tag = die.Tag(); |
2452 | if (tag == DW_TAG_enumerator) { |
2453 | DWARFAttributes attributes; |
2454 | const size_t num_child_attributes = die.GetAttributes(attributes); |
2455 | if (num_child_attributes > 0) { |
2456 | const char *name = NULL__null; |
2457 | bool got_value = false; |
2458 | int64_t enum_value = 0; |
2459 | Declaration decl; |
2460 | |
2461 | uint32_t i; |
2462 | for (i = 0; i < num_child_attributes; ++i) { |
2463 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2464 | DWARFFormValue form_value; |
2465 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2466 | switch (attr) { |
2467 | case DW_AT_const_value: |
2468 | got_value = true; |
2469 | if (is_signed) |
2470 | enum_value = form_value.Signed(); |
2471 | else |
2472 | enum_value = form_value.Unsigned(); |
2473 | break; |
2474 | |
2475 | case DW_AT_name: |
2476 | name = form_value.AsCString(); |
2477 | break; |
2478 | |
2479 | case DW_AT_description: |
2480 | default: |
2481 | case DW_AT_decl_file: |
2482 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
2483 | form_value.Unsigned())); |
2484 | break; |
2485 | case DW_AT_decl_line: |
2486 | decl.SetLine(form_value.Unsigned()); |
2487 | break; |
2488 | case DW_AT_decl_column: |
2489 | decl.SetColumn(form_value.Unsigned()); |
2490 | break; |
2491 | case DW_AT_sibling: |
2492 | break; |
2493 | } |
2494 | } |
2495 | } |
2496 | |
2497 | if (name && name[0] && got_value) { |
2498 | m_ast.AddEnumerationValueToEnumerationType( |
2499 | clang_type.GetOpaqueQualType(), |
2500 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), |
2501 | decl, name, enum_value, enumerator_byte_size * 8); |
2502 | ++enumerators_added; |
2503 | } |
2504 | } |
2505 | } |
2506 | } |
2507 | return enumerators_added; |
2508 | } |
2509 | |
2510 | #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE1) |
2511 | |
2512 | class DIEStack { |
2513 | public: |
2514 | void Push(const DWARFDIE &die) { m_dies.push_back(die); } |
2515 | |
2516 | void LogDIEs(Log *log) { |
2517 | StreamString log_strm; |
2518 | const size_t n = m_dies.size(); |
2519 | log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n); |
2520 | for (size_t i = 0; i < n; i++) { |
2521 | std::string qualified_name; |
2522 | const DWARFDIE &die = m_dies[i]; |
2523 | die.GetQualifiedName(qualified_name); |
2524 | log_strm.Printf("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n", (uint64_t)i, |
2525 | die.GetOffset(), die.GetTagAsCString(), |
2526 | qualified_name.c_str()); |
2527 | } |
2528 | log->PutCString(log_strm.GetData()); |
2529 | } |
2530 | void Pop() { m_dies.pop_back(); } |
2531 | |
2532 | class ScopedPopper { |
2533 | public: |
2534 | ScopedPopper(DIEStack &die_stack) |
2535 | : m_die_stack(die_stack), m_valid(false) {} |
2536 | |
2537 | void Push(const DWARFDIE &die) { |
2538 | m_valid = true; |
2539 | m_die_stack.Push(die); |
2540 | } |
2541 | |
2542 | ~ScopedPopper() { |
2543 | if (m_valid) |
2544 | m_die_stack.Pop(); |
2545 | } |
2546 | |
2547 | protected: |
2548 | DIEStack &m_die_stack; |
2549 | bool m_valid; |
2550 | }; |
2551 | |
2552 | protected: |
2553 | typedef std::vector<DWARFDIE> Stack; |
2554 | Stack m_dies; |
2555 | }; |
2556 | #endif |
2557 | |
2558 | Function *DWARFASTParserClang::ParseFunctionFromDWARF(const SymbolContext &sc, |
2559 | const DWARFDIE &die) { |
2560 | DWARFRangeList func_ranges; |
2561 | const char *name = NULL__null; |
2562 | const char *mangled = NULL__null; |
2563 | int decl_file = 0; |
2564 | int decl_line = 0; |
2565 | int decl_column = 0; |
2566 | int call_file = 0; |
2567 | int call_line = 0; |
2568 | int call_column = 0; |
2569 | DWARFExpression frame_base(die.GetCU()); |
2570 | |
2571 | const dw_tag_t tag = die.Tag(); |
2572 | |
2573 | if (tag != DW_TAG_subprogram) |
2574 | return NULL__null; |
2575 | |
2576 | if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line, |
2577 | decl_column, call_file, call_line, call_column, |
2578 | &frame_base)) { |
2579 | |
2580 | // Union of all ranges in the function DIE (if the function is |
2581 | // discontiguous) |
2582 | AddressRange func_range; |
2583 | lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0); |
2584 | lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0); |
2585 | if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) && |
2586 | lowest_func_addr <= highest_func_addr) { |
2587 | ModuleSP module_sp(die.GetModule()); |
2588 | func_range.GetBaseAddress().ResolveAddressUsingFileSections( |
2589 | lowest_func_addr, module_sp->GetSectionList()); |
2590 | if (func_range.GetBaseAddress().IsValid()) |
2591 | func_range.SetByteSize(highest_func_addr - lowest_func_addr); |
2592 | } |
2593 | |
2594 | if (func_range.GetBaseAddress().IsValid()) { |
2595 | Mangled func_name; |
2596 | if (mangled) |
2597 | func_name.SetValue(ConstString(mangled), true); |
2598 | else if ((die.GetParent().Tag() == DW_TAG_compile_unit || |
2599 | die.GetParent().Tag() == DW_TAG_partial_unit) && |
2600 | Language::LanguageIsCPlusPlus(die.GetLanguage()) && name && |
2601 | strcmp(name, "main") != 0) { |
2602 | // If the mangled name is not present in the DWARF, generate the |
2603 | // demangled name using the decl context. We skip if the function is |
2604 | // "main" as its name is never mangled. |
2605 | bool is_static = false; |
2606 | bool is_variadic = false; |
2607 | bool has_template_params = false; |
2608 | unsigned type_quals = 0; |
2609 | std::vector<CompilerType> param_types; |
2610 | std::vector<clang::ParmVarDecl *> param_decls; |
2611 | DWARFDeclContext decl_ctx; |
2612 | StreamString sstr; |
2613 | |
2614 | die.GetDWARFDeclContext(decl_ctx); |
2615 | sstr << decl_ctx.GetQualifiedName(); |
2616 | |
2617 | clang::DeclContext *containing_decl_ctx = |
2618 | GetClangDeclContextContainingDIE(die, nullptr); |
2619 | ParseChildParameters(sc, containing_decl_ctx, die, true, is_static, |
2620 | is_variadic, has_template_params, param_types, |
2621 | param_decls, type_quals); |
2622 | sstr << "("; |
2623 | for (size_t i = 0; i < param_types.size(); i++) { |
2624 | if (i > 0) |
2625 | sstr << ", "; |
2626 | sstr << param_types[i].GetTypeName(); |
2627 | } |
2628 | if (is_variadic) |
2629 | sstr << ", ..."; |
2630 | sstr << ")"; |
2631 | if (type_quals & clang::Qualifiers::Const) |
2632 | sstr << " const"; |
2633 | |
2634 | func_name.SetValue(ConstString(sstr.GetString()), false); |
2635 | } else |
2636 | func_name.SetValue(ConstString(name), false); |
2637 | |
2638 | FunctionSP func_sp; |
2639 | std::unique_ptr<Declaration> decl_ap; |
2640 | if (decl_file != 0 || decl_line != 0 || decl_column != 0) |
2641 | decl_ap.reset(new Declaration( |
2642 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), |
2643 | decl_line, decl_column)); |
2644 | |
2645 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
2646 | // Supply the type _only_ if it has already been parsed |
2647 | Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE()); |
2648 | |
2649 | assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED)((func_type == __null || func_type != ((lldb_private::Type *) 1)) ? static_cast<void> (0) : __assert_fail ("func_type == NULL || func_type != DIE_IS_BEING_PARSED" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2649, __PRETTY_FUNCTION__)); |
2650 | |
2651 | if (dwarf->FixupAddress(func_range.GetBaseAddress())) { |
2652 | const user_id_t func_user_id = die.GetID(); |
2653 | func_sp.reset(new Function(sc.comp_unit, |
2654 | func_user_id, // UserID is the DIE offset |
2655 | func_user_id, func_name, func_type, |
2656 | func_range)); // first address range |
2657 | |
2658 | if (func_sp.get() != NULL__null) { |
2659 | if (frame_base.IsValid()) |
2660 | func_sp->GetFrameBaseExpression() = frame_base; |
2661 | sc.comp_unit->AddFunction(func_sp); |
2662 | return func_sp.get(); |
2663 | } |
2664 | } |
2665 | } |
2666 | } |
2667 | return NULL__null; |
2668 | } |
2669 | |
2670 | bool DWARFASTParserClang::ParseChildMembers( |
2671 | const SymbolContext &sc, const DWARFDIE &parent_die, |
2672 | CompilerType &class_clang_type, const LanguageType class_language, |
2673 | std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> &base_classes, |
2674 | std::vector<int> &member_accessibilities, |
2675 | DWARFDIECollection &member_function_dies, |
2676 | DelayedPropertyList &delayed_properties, AccessType &default_accessibility, |
2677 | bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) { |
2678 | if (!parent_die) |
2679 | return 0; |
2680 | |
2681 | // Get the parent byte size so we can verify any members will fit |
2682 | const uint64_t parent_byte_size = |
2683 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX(18446744073709551615UL)); |
2684 | const uint64_t parent_bit_size = |
2685 | parent_byte_size == UINT64_MAX(18446744073709551615UL) ? UINT64_MAX(18446744073709551615UL) : parent_byte_size * 8; |
2686 | |
2687 | uint32_t member_idx = 0; |
2688 | BitfieldInfo last_field_info; |
2689 | |
2690 | ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); |
2691 | ClangASTContext *ast = |
2692 | llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem()); |
2693 | if (ast == nullptr) |
2694 | return 0; |
2695 | |
2696 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2697 | die = die.GetSibling()) { |
2698 | dw_tag_t tag = die.Tag(); |
2699 | |
2700 | switch (tag) { |
2701 | case DW_TAG_member: |
2702 | case DW_TAG_APPLE_property: { |
2703 | DWARFAttributes attributes; |
2704 | const size_t num_attributes = die.GetAttributes(attributes); |
2705 | if (num_attributes > 0) { |
2706 | Declaration decl; |
2707 | // DWARFExpression location; |
2708 | const char *name = NULL__null; |
2709 | const char *prop_name = NULL__null; |
2710 | const char *prop_getter_name = NULL__null; |
2711 | const char *prop_setter_name = NULL__null; |
2712 | uint32_t prop_attributes = 0; |
2713 | |
2714 | bool is_artificial = false; |
2715 | DWARFFormValue encoding_form; |
2716 | AccessType accessibility = eAccessNone; |
2717 | uint32_t member_byte_offset = |
2718 | (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX(4294967295U); |
2719 | size_t byte_size = 0; |
2720 | int64_t bit_offset = 0; |
2721 | uint64_t data_bit_offset = UINT64_MAX(18446744073709551615UL); |
2722 | size_t bit_size = 0; |
2723 | bool is_external = |
2724 | false; // On DW_TAG_members, this means the member is static |
2725 | uint32_t i; |
2726 | for (i = 0; i < num_attributes && !is_artificial; ++i) { |
2727 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2728 | DWARFFormValue form_value; |
2729 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2730 | switch (attr) { |
2731 | case DW_AT_decl_file: |
2732 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
2733 | form_value.Unsigned())); |
2734 | break; |
2735 | case DW_AT_decl_line: |
2736 | decl.SetLine(form_value.Unsigned()); |
2737 | break; |
2738 | case DW_AT_decl_column: |
2739 | decl.SetColumn(form_value.Unsigned()); |
2740 | break; |
2741 | case DW_AT_name: |
2742 | name = form_value.AsCString(); |
2743 | break; |
2744 | case DW_AT_type: |
2745 | encoding_form = form_value; |
2746 | break; |
2747 | case DW_AT_bit_offset: |
2748 | bit_offset = form_value.Signed(); |
2749 | break; |
2750 | case DW_AT_bit_size: |
2751 | bit_size = form_value.Unsigned(); |
2752 | break; |
2753 | case DW_AT_byte_size: |
2754 | byte_size = form_value.Unsigned(); |
2755 | break; |
2756 | case DW_AT_data_bit_offset: |
2757 | data_bit_offset = form_value.Unsigned(); |
2758 | break; |
2759 | case DW_AT_data_member_location: |
2760 | if (form_value.BlockData()) { |
2761 | Value initialValue(0); |
2762 | Value memberOffset(0); |
2763 | const DWARFDataExtractor &debug_info_data = die.GetData(); |
2764 | uint32_t block_length = form_value.Unsigned(); |
2765 | uint32_t block_offset = |
2766 | form_value.BlockData() - debug_info_data.GetDataStart(); |
2767 | if (DWARFExpression::Evaluate( |
2768 | nullptr, // ExecutionContext * |
2769 | nullptr, // RegisterContext * |
2770 | module_sp, debug_info_data, die.GetCU(), block_offset, |
2771 | block_length, eRegisterKindDWARF, &initialValue, |
2772 | nullptr, memberOffset, nullptr)) { |
2773 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
2774 | } |
2775 | } else { |
2776 | // With DWARF 3 and later, if the value is an integer constant, |
2777 | // this form value is the offset in bytes from the beginning of |
2778 | // the containing entity. |
2779 | member_byte_offset = form_value.Unsigned(); |
2780 | } |
2781 | break; |
2782 | |
2783 | case DW_AT_accessibility: |
2784 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
2785 | break; |
2786 | case DW_AT_artificial: |
2787 | is_artificial = form_value.Boolean(); |
2788 | break; |
2789 | case DW_AT_APPLE_property_name: |
2790 | prop_name = form_value.AsCString(); |
2791 | break; |
2792 | case DW_AT_APPLE_property_getter: |
2793 | prop_getter_name = form_value.AsCString(); |
2794 | break; |
2795 | case DW_AT_APPLE_property_setter: |
2796 | prop_setter_name = form_value.AsCString(); |
2797 | break; |
2798 | case DW_AT_APPLE_property_attribute: |
2799 | prop_attributes = form_value.Unsigned(); |
2800 | break; |
2801 | case DW_AT_external: |
2802 | is_external = form_value.Boolean(); |
2803 | break; |
2804 | |
2805 | default: |
2806 | case DW_AT_declaration: |
2807 | case DW_AT_description: |
2808 | case DW_AT_mutable: |
2809 | case DW_AT_visibility: |
2810 | case DW_AT_sibling: |
2811 | break; |
2812 | } |
2813 | } |
2814 | } |
2815 | |
2816 | if (prop_name) { |
2817 | ConstString fixed_getter; |
2818 | ConstString fixed_setter; |
2819 | |
2820 | // Check if the property getter/setter were provided as full names. |
2821 | // We want basenames, so we extract them. |
2822 | |
2823 | if (prop_getter_name && prop_getter_name[0] == '-') { |
2824 | ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true); |
2825 | prop_getter_name = prop_getter_method.GetSelector().GetCString(); |
2826 | } |
2827 | |
2828 | if (prop_setter_name && prop_setter_name[0] == '-') { |
2829 | ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true); |
2830 | prop_setter_name = prop_setter_method.GetSelector().GetCString(); |
2831 | } |
2832 | |
2833 | // If the names haven't been provided, they need to be filled in. |
2834 | |
2835 | if (!prop_getter_name) { |
2836 | prop_getter_name = prop_name; |
2837 | } |
2838 | if (!prop_setter_name && prop_name[0] && |
2839 | !(prop_attributes & DW_APPLE_PROPERTY_readonly)) { |
2840 | StreamString ss; |
2841 | |
2842 | ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]); |
2843 | |
2844 | fixed_setter.SetString(ss.GetString()); |
2845 | prop_setter_name = fixed_setter.GetCString(); |
2846 | } |
2847 | } |
2848 | |
2849 | // Clang has a DWARF generation bug where sometimes it represents |
2850 | // fields that are references with bad byte size and bit size/offset |
2851 | // information such as: |
2852 | // |
2853 | // DW_AT_byte_size( 0x00 ) |
2854 | // DW_AT_bit_size( 0x40 ) |
2855 | // DW_AT_bit_offset( 0xffffffffffffffc0 ) |
2856 | // |
2857 | // So check the bit offset to make sure it is sane, and if the values |
2858 | // are not sane, remove them. If we don't do this then we will end up |
2859 | // with a crash if we try to use this type in an expression when clang |
2860 | // becomes unhappy with its recycled debug info. |
2861 | |
2862 | if (byte_size == 0 && bit_offset < 0) { |
2863 | bit_size = 0; |
2864 | bit_offset = 0; |
2865 | } |
2866 | |
2867 | // FIXME: Make Clang ignore Objective-C accessibility for expressions |
2868 | if (class_language == eLanguageTypeObjC || |
2869 | class_language == eLanguageTypeObjC_plus_plus) |
2870 | accessibility = eAccessNone; |
2871 | |
2872 | // Handle static members |
2873 | if (is_external && member_byte_offset == UINT32_MAX(4294967295U)) { |
2874 | Type *var_type = die.ResolveTypeUID(DIERef(encoding_form)); |
2875 | |
2876 | if (var_type) { |
2877 | if (accessibility == eAccessNone) |
2878 | accessibility = eAccessPublic; |
2879 | ClangASTContext::AddVariableToRecordType( |
2880 | class_clang_type, name, var_type->GetLayoutCompilerType(), |
2881 | accessibility); |
2882 | } |
2883 | break; |
2884 | } |
2885 | |
2886 | if (is_artificial == false) { |
2887 | Type *member_type = die.ResolveTypeUID(DIERef(encoding_form)); |
2888 | |
2889 | clang::FieldDecl *field_decl = NULL__null; |
2890 | if (tag == DW_TAG_member) { |
2891 | if (member_type) { |
2892 | if (accessibility == eAccessNone) |
2893 | accessibility = default_accessibility; |
2894 | member_accessibilities.push_back(accessibility); |
2895 | |
2896 | uint64_t field_bit_offset = |
2897 | (member_byte_offset == UINT32_MAX(4294967295U) ? 0 |
2898 | : (member_byte_offset * 8)); |
2899 | if (bit_size > 0) { |
2900 | |
2901 | BitfieldInfo this_field_info; |
2902 | this_field_info.bit_offset = field_bit_offset; |
2903 | this_field_info.bit_size = bit_size; |
2904 | |
2905 | ///////////////////////////////////////////////////////////// |
2906 | // How to locate a field given the DWARF debug information |
2907 | // |
2908 | // AT_byte_size indicates the size of the word in which the bit |
2909 | // offset must be interpreted. |
2910 | // |
2911 | // AT_data_member_location indicates the byte offset of the |
2912 | // word from the base address of the structure. |
2913 | // |
2914 | // AT_bit_offset indicates how many bits into the word |
2915 | // (according to the host endianness) the low-order bit of the |
2916 | // field starts. AT_bit_offset can be negative. |
2917 | // |
2918 | // AT_bit_size indicates the size of the field in bits. |
2919 | ///////////////////////////////////////////////////////////// |
2920 | |
2921 | if (data_bit_offset != UINT64_MAX(18446744073709551615UL)) { |
2922 | this_field_info.bit_offset = data_bit_offset; |
2923 | } else { |
2924 | if (byte_size == 0) |
2925 | byte_size = member_type->GetByteSize(); |
2926 | |
2927 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
2928 | if (objfile->GetByteOrder() == eByteOrderLittle) { |
2929 | this_field_info.bit_offset += byte_size * 8; |
2930 | this_field_info.bit_offset -= (bit_offset + bit_size); |
2931 | } else { |
2932 | this_field_info.bit_offset += bit_offset; |
2933 | } |
2934 | } |
2935 | |
2936 | if ((this_field_info.bit_offset >= parent_bit_size) || |
2937 | !last_field_info.NextBitfieldOffsetIsValid( |
2938 | this_field_info.bit_offset)) { |
2939 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
2940 | objfile->GetModule()->ReportWarning( |
2941 | "0x%8.8" PRIx64"l" "x" ": %s bitfield named \"%s\" has invalid " |
2942 | "bit offset (0x%8.8" PRIx64"l" "x" |
2943 | ") member will be ignored. Please file a bug against the " |
2944 | "compiler and include the preprocessed output for %s\n", |
2945 | die.GetID(), DW_TAG_value_to_name(tag), name, |
2946 | this_field_info.bit_offset, |
2947 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
2948 | : "the source file"); |
2949 | this_field_info.Clear(); |
2950 | continue; |
2951 | } |
2952 | |
2953 | // Update the field bit offset we will report for layout |
2954 | field_bit_offset = this_field_info.bit_offset; |
2955 | |
2956 | // If the member to be emitted did not start on a character |
2957 | // boundary and there is empty space between the last field and |
2958 | // this one, then we need to emit an anonymous member filling |
2959 | // up the space up to its start. There are three cases here: |
2960 | // |
2961 | // 1 If the previous member ended on a character boundary, then |
2962 | // we can emit an |
2963 | // anonymous member starting at the most recent character |
2964 | // boundary. |
2965 | // |
2966 | // 2 If the previous member did not end on a character boundary |
2967 | // and the distance |
2968 | // from the end of the previous member to the current member |
2969 | // is less than a |
2970 | // word width, then we can emit an anonymous member starting |
2971 | // right after the |
2972 | // previous member and right before this member. |
2973 | // |
2974 | // 3 If the previous member did not end on a character boundary |
2975 | // and the distance |
2976 | // from the end of the previous member to the current member |
2977 | // is greater than |
2978 | // or equal a word width, then we act as in Case 1. |
2979 | |
2980 | const uint64_t character_width = 8; |
2981 | const uint64_t word_width = 32; |
2982 | |
2983 | // Objective-C has invalid DW_AT_bit_offset values in older |
2984 | // versions of clang, so we have to be careful and only insert |
2985 | // unnamed bitfields if we have a new enough clang. |
2986 | bool detect_unnamed_bitfields = true; |
2987 | |
2988 | if (class_language == eLanguageTypeObjC || |
2989 | class_language == eLanguageTypeObjC_plus_plus) |
2990 | detect_unnamed_bitfields = |
2991 | die.GetCU()->Supports_unnamed_objc_bitfields(); |
2992 | |
2993 | if (detect_unnamed_bitfields) { |
2994 | BitfieldInfo anon_field_info; |
2995 | |
2996 | if ((this_field_info.bit_offset % character_width) != |
2997 | 0) // not char aligned |
2998 | { |
2999 | uint64_t last_field_end = 0; |
3000 | |
3001 | if (last_field_info.IsValid()) |
3002 | last_field_end = |
3003 | last_field_info.bit_offset + last_field_info.bit_size; |
3004 | |
3005 | if (this_field_info.bit_offset != last_field_end) { |
3006 | if (((last_field_end % character_width) == 0) || // case 1 |
3007 | (this_field_info.bit_offset - last_field_end >= |
3008 | word_width)) // case 3 |
3009 | { |
3010 | anon_field_info.bit_size = |
3011 | this_field_info.bit_offset % character_width; |
3012 | anon_field_info.bit_offset = |
3013 | this_field_info.bit_offset - |
3014 | anon_field_info.bit_size; |
3015 | } else // case 2 |
3016 | { |
3017 | anon_field_info.bit_size = |
3018 | this_field_info.bit_offset - last_field_end; |
3019 | anon_field_info.bit_offset = last_field_end; |
3020 | } |
3021 | } |
3022 | } |
3023 | |
3024 | if (anon_field_info.IsValid()) { |
3025 | clang::FieldDecl *unnamed_bitfield_decl = |
3026 | ClangASTContext::AddFieldToRecordType( |
3027 | class_clang_type, llvm::StringRef(), |
3028 | m_ast.GetBuiltinTypeForEncodingAndBitSize( |
3029 | eEncodingSint, word_width), |
3030 | accessibility, anon_field_info.bit_size); |
3031 | |
3032 | layout_info.field_offsets.insert(std::make_pair( |
3033 | unnamed_bitfield_decl, anon_field_info.bit_offset)); |
3034 | } |
3035 | } |
3036 | last_field_info = this_field_info; |
3037 | } else { |
3038 | last_field_info.Clear(); |
3039 | } |
3040 | |
3041 | CompilerType member_clang_type = |
3042 | member_type->GetLayoutCompilerType(); |
3043 | if (!member_clang_type.IsCompleteType()) |
3044 | member_clang_type.GetCompleteType(); |
3045 | |
3046 | { |
3047 | // Older versions of clang emit array[0] and array[1] in the |
3048 | // same way (<rdar://problem/12566646>). If the current field |
3049 | // is at the end of the structure, then there is definitely no |
3050 | // room for extra elements and we override the type to |
3051 | // array[0]. |
3052 | |
3053 | CompilerType member_array_element_type; |
3054 | uint64_t member_array_size; |
3055 | bool member_array_is_incomplete; |
3056 | |
3057 | if (member_clang_type.IsArrayType( |
3058 | &member_array_element_type, &member_array_size, |
3059 | &member_array_is_incomplete) && |
3060 | !member_array_is_incomplete) { |
3061 | uint64_t parent_byte_size = |
3062 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, |
3063 | UINT64_MAX(18446744073709551615UL)); |
3064 | |
3065 | if (member_byte_offset >= parent_byte_size) { |
3066 | if (member_array_size != 1 && |
3067 | (member_array_size != 0 || |
3068 | member_byte_offset > parent_byte_size)) { |
3069 | module_sp->ReportError( |
3070 | "0x%8.8" PRIx64"l" "x" |
3071 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
3072 | " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x", |
3073 | die.GetID(), name, encoding_form.Reference(), |
3074 | parent_die.GetID()); |
3075 | } |
3076 | |
3077 | member_clang_type = m_ast.CreateArrayType( |
3078 | member_array_element_type, 0, false); |
3079 | } |
3080 | } |
3081 | } |
3082 | |
3083 | if (ClangASTContext::IsCXXClassType(member_clang_type) && |
3084 | member_clang_type.GetCompleteType() == false) { |
3085 | if (die.GetCU()->GetProducer() == eProducerClang) |
3086 | module_sp->ReportError( |
3087 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3088 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
3089 | "complete definition.\nTry compiling the source file " |
3090 | "with -fstandalone-debug", |
3091 | parent_die.GetOffset(), parent_die.GetName(), |
3092 | die.GetOffset(), name); |
3093 | else |
3094 | module_sp->ReportError( |
3095 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3096 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
3097 | "complete definition.\nPlease file a bug against the " |
3098 | "compiler and include the preprocessed output for %s", |
3099 | parent_die.GetOffset(), parent_die.GetName(), |
3100 | die.GetOffset(), name, |
3101 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
3102 | : "the source file"); |
3103 | // We have no choice other than to pretend that the member |
3104 | // class is complete. If we don't do this, clang will crash |
3105 | // when trying to layout the class. Since we provide layout |
3106 | // assistance, all ivars in this class and other classes will |
3107 | // be fine, this is the best we can do short of crashing. |
3108 | if (ClangASTContext::StartTagDeclarationDefinition( |
3109 | member_clang_type)) { |
3110 | ClangASTContext::CompleteTagDeclarationDefinition( |
3111 | member_clang_type); |
3112 | } else { |
3113 | module_sp->ReportError( |
3114 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3115 | "0x%8.8x (%s) whose type claims to be a C++ class but we " |
3116 | "were not able to start its definition.\nPlease file a " |
3117 | "bug and attach the file at the start of this error " |
3118 | "message", |
3119 | parent_die.GetOffset(), parent_die.GetName(), |
3120 | die.GetOffset(), name); |
3121 | } |
3122 | } |
3123 | |
3124 | field_decl = ClangASTContext::AddFieldToRecordType( |
3125 | class_clang_type, name, member_clang_type, accessibility, |
3126 | bit_size); |
3127 | |
3128 | m_ast.SetMetadataAsUserID(field_decl, die.GetID()); |
3129 | |
3130 | layout_info.field_offsets.insert( |
3131 | std::make_pair(field_decl, field_bit_offset)); |
3132 | } else { |
3133 | if (name) |
3134 | module_sp->ReportError( |
3135 | "0x%8.8" PRIx64"l" "x" |
3136 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
3137 | " which was unable to be parsed", |
3138 | die.GetID(), name, encoding_form.Reference()); |
3139 | else |
3140 | module_sp->ReportError( |
3141 | "0x%8.8" PRIx64"l" "x" |
3142 | ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x" |
3143 | " which was unable to be parsed", |
3144 | die.GetID(), encoding_form.Reference()); |
3145 | } |
3146 | } |
3147 | |
3148 | if (prop_name != NULL__null && member_type) { |
3149 | clang::ObjCIvarDecl *ivar_decl = NULL__null; |
3150 | |
3151 | if (field_decl) { |
3152 | ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); |
3153 | assert(ivar_decl != NULL)((ivar_decl != __null) ? static_cast<void> (0) : __assert_fail ("ivar_decl != NULL", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3153, __PRETTY_FUNCTION__)); |
3154 | } |
3155 | |
3156 | ClangASTMetadata metadata; |
3157 | metadata.SetUserID(die.GetID()); |
3158 | delayed_properties.push_back(DelayedAddObjCClassProperty( |
3159 | class_clang_type, prop_name, |
3160 | member_type->GetLayoutCompilerType(), ivar_decl, |
3161 | prop_setter_name, prop_getter_name, prop_attributes, |
3162 | &metadata)); |
3163 | |
3164 | if (ivar_decl) |
3165 | m_ast.SetMetadataAsUserID(ivar_decl, die.GetID()); |
3166 | } |
3167 | } |
3168 | } |
3169 | ++member_idx; |
3170 | } break; |
3171 | |
3172 | case DW_TAG_subprogram: |
3173 | // Let the type parsing code handle this one for us. |
3174 | member_function_dies.Append(die); |
3175 | break; |
3176 | |
3177 | case DW_TAG_inheritance: { |
3178 | is_a_class = true; |
3179 | if (default_accessibility == eAccessNone) |
3180 | default_accessibility = eAccessPrivate; |
3181 | // TODO: implement DW_TAG_inheritance type parsing |
3182 | DWARFAttributes attributes; |
3183 | const size_t num_attributes = die.GetAttributes(attributes); |
3184 | if (num_attributes > 0) { |
3185 | Declaration decl; |
3186 | DWARFExpression location(die.GetCU()); |
3187 | DWARFFormValue encoding_form; |
3188 | AccessType accessibility = default_accessibility; |
3189 | bool is_virtual = false; |
3190 | bool is_base_of_class = true; |
3191 | off_t member_byte_offset = 0; |
3192 | uint32_t i; |
3193 | for (i = 0; i < num_attributes; ++i) { |
3194 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3195 | DWARFFormValue form_value; |
3196 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3197 | switch (attr) { |
3198 | case DW_AT_decl_file: |
3199 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
3200 | form_value.Unsigned())); |
3201 | break; |
3202 | case DW_AT_decl_line: |
3203 | decl.SetLine(form_value.Unsigned()); |
3204 | break; |
3205 | case DW_AT_decl_column: |
3206 | decl.SetColumn(form_value.Unsigned()); |
3207 | break; |
3208 | case DW_AT_type: |
3209 | encoding_form = form_value; |
3210 | break; |
3211 | case DW_AT_data_member_location: |
3212 | if (form_value.BlockData()) { |
3213 | Value initialValue(0); |
3214 | Value memberOffset(0); |
3215 | const DWARFDataExtractor &debug_info_data = die.GetData(); |
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 of |
3229 | // 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)((base_class_clang_type) ? static_cast<void> (0) : __assert_fail ("base_class_clang_type", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3265, __PRETTY_FUNCTION__)); |
3266 | if (class_language == eLanguageTypeObjC) { |
3267 | ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); |
3268 | } else { |
3269 | std::unique_ptr<clang::CXXBaseSpecifier> result = |
3270 | ast->CreateBaseClassSpecifier( |
3271 | base_class_clang_type.GetOpaqueQualType(), accessibility, |
3272 | is_virtual, is_base_of_class); |
3273 | if (!result) |
3274 | break; |
3275 | |
3276 | base_classes.push_back(std::move(result)); |
3277 | |
3278 | if (is_virtual) { |
3279 | // Do not specify any offset for virtual inheritance. The DWARF |
3280 | // produced by clang doesn't give us a constant offset, but gives |
3281 | // us a DWARF expressions that requires an actual object in memory. |
3282 | // the DW_AT_data_member_location for a virtual base class looks |
3283 | // like: |
3284 | // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, |
3285 | // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, |
3286 | // DW_OP_plus ) |
3287 | // Given this, there is really no valid response we can give to |
3288 | // clang for virtual base class offsets, and this should eventually |
3289 | // be removed from LayoutRecordType() in the external |
3290 | // AST source in clang. |
3291 | } else { |
3292 | layout_info.base_offsets.insert(std::make_pair( |
3293 | ast->GetAsCXXRecordDecl( |
3294 | base_class_clang_type.GetOpaqueQualType()), |
3295 | clang::CharUnits::fromQuantity(member_byte_offset))); |
3296 | } |
3297 | } |
3298 | } |
3299 | } break; |
3300 | |
3301 | default: |
3302 | break; |
3303 | } |
3304 | } |
3305 | |
3306 | return true; |
3307 | } |
3308 | |
3309 | size_t DWARFASTParserClang::ParseChildParameters( |
3310 | const SymbolContext &sc, clang::DeclContext *containing_decl_ctx, |
3311 | const DWARFDIE &parent_die, bool skip_artificial, bool &is_static, |
3312 | bool &is_variadic, bool &has_template_params, |
3313 | std::vector<CompilerType> &function_param_types, |
3314 | std::vector<clang::ParmVarDecl *> &function_param_decls, |
3315 | unsigned &type_quals) { |
3316 | if (!parent_die) |
3317 | return 0; |
3318 | |
3319 | size_t arg_idx = 0; |
3320 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
3321 | die = die.GetSibling()) { |
3322 | const dw_tag_t tag = die.Tag(); |
3323 | switch (tag) { |
3324 | case DW_TAG_formal_parameter: { |
3325 | DWARFAttributes attributes; |
3326 | const size_t num_attributes = die.GetAttributes(attributes); |
3327 | if (num_attributes > 0) { |
3328 | const char *name = NULL__null; |
3329 | Declaration decl; |
3330 | DWARFFormValue param_type_die_form; |
3331 | bool is_artificial = false; |
3332 | // one of None, Auto, Register, Extern, Static, PrivateExtern |
3333 | |
3334 | clang::StorageClass storage = clang::SC_None; |
3335 | uint32_t i; |
3336 | for (i = 0; i < num_attributes; ++i) { |
3337 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3338 | DWARFFormValue form_value; |
3339 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3340 | switch (attr) { |
3341 | case DW_AT_decl_file: |
3342 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
3343 | form_value.Unsigned())); |
3344 | break; |
3345 | case DW_AT_decl_line: |
3346 | decl.SetLine(form_value.Unsigned()); |
3347 | break; |
3348 | case DW_AT_decl_column: |
3349 | decl.SetColumn(form_value.Unsigned()); |
3350 | break; |
3351 | case DW_AT_name: |
3352 | name = form_value.AsCString(); |
3353 | break; |
3354 | case DW_AT_type: |
3355 | param_type_die_form = form_value; |
3356 | break; |
3357 | case DW_AT_artificial: |
3358 | is_artificial = form_value.Boolean(); |
3359 | break; |
3360 | case DW_AT_location: |
3361 | case DW_AT_const_value: |
3362 | case DW_AT_default_value: |
3363 | case DW_AT_description: |
3364 | case DW_AT_endianity: |
3365 | case DW_AT_is_optional: |
3366 | case DW_AT_segment: |
3367 | case DW_AT_variable_parameter: |
3368 | default: |
3369 | case DW_AT_abstract_origin: |
3370 | case DW_AT_sibling: |
3371 | break; |
3372 | } |
3373 | } |
3374 | } |
3375 | |
3376 | bool skip = false; |
3377 | if (skip_artificial && is_artificial) { |
3378 | // In order to determine if a C++ member function is "const" we |
3379 | // have to look at the const-ness of "this"... |
3380 | if (arg_idx == 0 && |
3381 | DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()) && |
3382 | // Often times compilers omit the "this" name for the |
3383 | // specification DIEs, so we can't rely upon the name being in |
3384 | // the formal parameter DIE... |
3385 | (name == NULL__null || ::strcmp(name, "this") == 0)) { |
3386 | Type *this_type = die.ResolveTypeUID(DIERef(param_type_die_form)); |
3387 | if (this_type) { |
3388 | uint32_t encoding_mask = this_type->GetEncodingMask(); |
3389 | if (encoding_mask & Type::eEncodingIsPointerUID) { |
3390 | is_static = false; |
3391 | |
3392 | if (encoding_mask & (1u << Type::eEncodingIsConstUID)) |
3393 | type_quals |= clang::Qualifiers::Const; |
3394 | if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) |
3395 | type_quals |= clang::Qualifiers::Volatile; |
3396 | } |
3397 | } |
3398 | } |
3399 | skip = true; |
3400 | } |
3401 | |
3402 | if (!skip) { |
3403 | Type *type = die.ResolveTypeUID(DIERef(param_type_die_form)); |
3404 | if (type) { |
3405 | function_param_types.push_back(type->GetForwardCompilerType()); |
3406 | |
3407 | clang::ParmVarDecl *param_var_decl = |
3408 | m_ast.CreateParameterDeclaration( |
3409 | name, type->GetForwardCompilerType(), storage); |
3410 | assert(param_var_decl)((param_var_decl) ? static_cast<void> (0) : __assert_fail ("param_var_decl", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3410, __PRETTY_FUNCTION__)); |
3411 | function_param_decls.push_back(param_var_decl); |
3412 | |
3413 | m_ast.SetMetadataAsUserID(param_var_decl, die.GetID()); |
3414 | } |
3415 | } |
3416 | } |
3417 | arg_idx++; |
3418 | } break; |
3419 | |
3420 | case DW_TAG_unspecified_parameters: |
3421 | is_variadic = true; |
3422 | break; |
3423 | |
3424 | case DW_TAG_template_type_parameter: |
3425 | case DW_TAG_template_value_parameter: |
3426 | case DW_TAG_GNU_template_parameter_pack: |
3427 | // The one caller of this was never using the template_param_infos, and |
3428 | // the local variable was taking up a large amount of stack space in |
3429 | // SymbolFileDWARF::ParseType() so this was removed. If we ever need the |
3430 | // template params back, we can add them back. |
3431 | // ParseTemplateDIE (dwarf_cu, die, template_param_infos); |
3432 | has_template_params = true; |
3433 | break; |
3434 | |
3435 | default: |
3436 | break; |
3437 | } |
3438 | } |
3439 | return arg_idx; |
3440 | } |
3441 | |
3442 | void DWARFASTParserClang::ParseChildArrayInfo( |
3443 | const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index, |
3444 | std::vector<uint64_t> &element_orders, uint32_t &byte_stride, |
3445 | uint32_t &bit_stride) { |
3446 | if (!parent_die) |
3447 | return; |
3448 | |
3449 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
3450 | die = die.GetSibling()) { |
3451 | const dw_tag_t tag = die.Tag(); |
3452 | switch (tag) { |
3453 | case DW_TAG_subrange_type: { |
3454 | DWARFAttributes attributes; |
3455 | const size_t num_child_attributes = die.GetAttributes(attributes); |
3456 | if (num_child_attributes > 0) { |
3457 | uint64_t num_elements = 0; |
3458 | uint64_t lower_bound = 0; |
3459 | uint64_t upper_bound = 0; |
3460 | bool upper_bound_valid = false; |
3461 | uint32_t i; |
3462 | for (i = 0; i < num_child_attributes; ++i) { |
3463 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3464 | DWARFFormValue form_value; |
3465 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3466 | switch (attr) { |
3467 | case DW_AT_name: |
3468 | break; |
3469 | |
3470 | case DW_AT_count: |
3471 | num_elements = form_value.Unsigned(); |
3472 | break; |
3473 | |
3474 | case DW_AT_bit_stride: |
3475 | bit_stride = form_value.Unsigned(); |
3476 | break; |
3477 | |
3478 | case DW_AT_byte_stride: |
3479 | byte_stride = form_value.Unsigned(); |
3480 | break; |
3481 | |
3482 | case DW_AT_lower_bound: |
3483 | lower_bound = form_value.Unsigned(); |
3484 | break; |
3485 | |
3486 | case DW_AT_upper_bound: |
3487 | upper_bound_valid = true; |
3488 | upper_bound = form_value.Unsigned(); |
3489 | break; |
3490 | |
3491 | default: |
3492 | case DW_AT_abstract_origin: |
3493 | case DW_AT_accessibility: |
3494 | case DW_AT_allocated: |
3495 | case DW_AT_associated: |
3496 | case DW_AT_data_location: |
3497 | case DW_AT_declaration: |
3498 | case DW_AT_description: |
3499 | case DW_AT_sibling: |
3500 | case DW_AT_threads_scaled: |
3501 | case DW_AT_type: |
3502 | case DW_AT_visibility: |
3503 | break; |
3504 | } |
3505 | } |
3506 | } |
3507 | |
3508 | if (num_elements == 0) { |
3509 | if (upper_bound_valid && upper_bound >= lower_bound) |
3510 | num_elements = upper_bound - lower_bound + 1; |
3511 | } |
3512 | |
3513 | element_orders.push_back(num_elements); |
3514 | } |
3515 | } break; |
3516 | } |
3517 | } |
3518 | } |
3519 | |
3520 | Type *DWARFASTParserClang::GetTypeForDIE(const DWARFDIE &die) { |
3521 | if (die) { |
3522 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3523 | DWARFAttributes attributes; |
3524 | const size_t num_attributes = die.GetAttributes(attributes); |
3525 | if (num_attributes > 0) { |
3526 | DWARFFormValue type_die_form; |
3527 | for (size_t i = 0; i < num_attributes; ++i) { |
3528 | dw_attr_t attr = attributes.AttributeAtIndex(i); |
3529 | DWARFFormValue form_value; |
3530 | |
3531 | if (attr == DW_AT_type && |
3532 | attributes.ExtractFormValueAtIndex(i, form_value)) |
3533 | return dwarf->ResolveTypeUID(dwarf->GetDIE(DIERef(form_value)), true); |
3534 | } |
3535 | } |
3536 | } |
3537 | |
3538 | return nullptr; |
3539 | } |
3540 | |
3541 | clang::Decl *DWARFASTParserClang::GetClangDeclForDIE(const DWARFDIE &die) { |
3542 | if (!die) |
3543 | return nullptr; |
3544 | |
3545 | switch (die.Tag()) { |
3546 | case DW_TAG_variable: |
3547 | case DW_TAG_constant: |
3548 | case DW_TAG_formal_parameter: |
3549 | case DW_TAG_imported_declaration: |
3550 | case DW_TAG_imported_module: |
3551 | break; |
3552 | default: |
3553 | return nullptr; |
3554 | } |
3555 | |
3556 | DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE()); |
3557 | if (cache_pos != m_die_to_decl.end()) |
3558 | return cache_pos->second; |
3559 | |
3560 | if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) { |
3561 | clang::Decl *decl = GetClangDeclForDIE(spec_die); |
3562 | m_die_to_decl[die.GetDIE()] = decl; |
3563 | m_decl_to_die[decl].insert(die.GetDIE()); |
3564 | return decl; |
3565 | } |
3566 | |
3567 | if (DWARFDIE abstract_origin_die = |
3568 | die.GetReferencedDIE(DW_AT_abstract_origin)) { |
3569 | clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die); |
3570 | m_die_to_decl[die.GetDIE()] = decl; |
3571 | m_decl_to_die[decl].insert(die.GetDIE()); |
3572 | return decl; |
3573 | } |
3574 | |
3575 | clang::Decl *decl = nullptr; |
3576 | switch (die.Tag()) { |
3577 | case DW_TAG_variable: |
3578 | case DW_TAG_constant: |
3579 | case DW_TAG_formal_parameter: { |
3580 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3581 | Type *type = GetTypeForDIE(die); |
3582 | if (dwarf && type) { |
3583 | const char *name = die.GetName(); |
3584 | clang::DeclContext *decl_context = |
3585 | ClangASTContext::DeclContextGetAsDeclContext( |
3586 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3587 | decl = m_ast.CreateVariableDeclaration( |
3588 | decl_context, name, |
3589 | ClangUtil::GetQualType(type->GetForwardCompilerType())); |
3590 | } |
3591 | break; |
3592 | } |
3593 | case DW_TAG_imported_declaration: { |
3594 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3595 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
3596 | if (imported_uid) { |
3597 | CompilerDecl imported_decl = imported_uid.GetDecl(); |
3598 | if (imported_decl) { |
3599 | clang::DeclContext *decl_context = |
3600 | ClangASTContext::DeclContextGetAsDeclContext( |
3601 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3602 | if (clang::NamedDecl *clang_imported_decl = |
3603 | llvm::dyn_cast<clang::NamedDecl>( |
3604 | (clang::Decl *)imported_decl.GetOpaqueDecl())) |
3605 | decl = |
3606 | m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl); |
3607 | } |
3608 | } |
3609 | break; |
3610 | } |
3611 | case DW_TAG_imported_module: { |
3612 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3613 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
3614 | |
3615 | if (imported_uid) { |
3616 | CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext(); |
3617 | if (imported_decl_ctx) { |
3618 | clang::DeclContext *decl_context = |
3619 | ClangASTContext::DeclContextGetAsDeclContext( |
3620 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3621 | if (clang::NamespaceDecl *ns_decl = |
3622 | ClangASTContext::DeclContextGetAsNamespaceDecl( |
3623 | imported_decl_ctx)) |
3624 | decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl); |
3625 | } |
3626 | } |
3627 | break; |
3628 | } |
3629 | default: |
3630 | break; |
3631 | } |
3632 | |
3633 | m_die_to_decl[die.GetDIE()] = decl; |
3634 | m_decl_to_die[decl].insert(die.GetDIE()); |
3635 | |
3636 | return decl; |
3637 | } |
3638 | |
3639 | clang::DeclContext * |
3640 | DWARFASTParserClang::GetClangDeclContextForDIE(const DWARFDIE &die) { |
3641 | if (die) { |
3642 | clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die); |
3643 | if (decl_ctx) |
3644 | return decl_ctx; |
3645 | |
3646 | bool try_parsing_type = true; |
3647 | switch (die.Tag()) { |
3648 | case DW_TAG_compile_unit: |
3649 | case DW_TAG_partial_unit: |
3650 | decl_ctx = m_ast.GetTranslationUnitDecl(); |
3651 | try_parsing_type = false; |
3652 | break; |
3653 | |
3654 | case DW_TAG_namespace: |
3655 | decl_ctx = ResolveNamespaceDIE(die); |
3656 | try_parsing_type = false; |
3657 | break; |
3658 | |
3659 | case DW_TAG_lexical_block: |
3660 | decl_ctx = GetDeclContextForBlock(die); |
3661 | try_parsing_type = false; |
3662 | break; |
3663 | |
3664 | default: |
3665 | break; |
3666 | } |
3667 | |
3668 | if (decl_ctx == nullptr && try_parsing_type) { |
3669 | Type *type = die.GetDWARF()->ResolveType(die); |
3670 | if (type) |
3671 | decl_ctx = GetCachedClangDeclContextForDIE(die); |
3672 | } |
3673 | |
3674 | if (decl_ctx) { |
3675 | LinkDeclContextToDIE(decl_ctx, die); |
3676 | return decl_ctx; |
3677 | } |
3678 | } |
3679 | return nullptr; |
3680 | } |
3681 | |
3682 | static bool IsSubroutine(const DWARFDIE &die) { |
3683 | switch (die.Tag()) { |
3684 | case DW_TAG_subprogram: |
3685 | case DW_TAG_inlined_subroutine: |
3686 | return true; |
3687 | default: |
3688 | return false; |
3689 | } |
3690 | } |
3691 | |
3692 | static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die) { |
3693 | for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) { |
3694 | if (IsSubroutine(candidate)) { |
3695 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
3696 | return candidate; |
3697 | } else { |
3698 | return DWARFDIE(); |
3699 | } |
3700 | } |
3701 | } |
3702 | assert(0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "((0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on " "something not in a function") ? static_cast<void> (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\"" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3703, __PRETTY_FUNCTION__)) |
3703 | "something not in a function")((0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on " "something not in a function") ? static_cast<void> (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\"" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3703, __PRETTY_FUNCTION__)); |
3704 | return DWARFDIE(); |
3705 | } |
3706 | |
3707 | static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context) { |
3708 | for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid(); |
3709 | candidate = candidate.GetSibling()) { |
3710 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
3711 | return candidate; |
3712 | } |
3713 | } |
3714 | return DWARFDIE(); |
3715 | } |
3716 | |
3717 | static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block, |
3718 | const DWARFDIE &function) { |
3719 | assert(IsSubroutine(function))((IsSubroutine(function)) ? static_cast<void> (0) : __assert_fail ("IsSubroutine(function)", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3719, __PRETTY_FUNCTION__)); |
3720 | for (DWARFDIE context = block; context != function.GetParent(); |
3721 | context = context.GetParent()) { |
3722 | assert(!IsSubroutine(context) || context == function)((!IsSubroutine(context) || context == function) ? static_cast <void> (0) : __assert_fail ("!IsSubroutine(context) || context == function" , "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3722, __PRETTY_FUNCTION__)); |
3723 | if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) { |
3724 | return child; |
3725 | } |
3726 | } |
3727 | return DWARFDIE(); |
3728 | } |
3729 | |
3730 | clang::DeclContext * |
3731 | DWARFASTParserClang::GetDeclContextForBlock(const DWARFDIE &die) { |
3732 | assert(die.Tag() == DW_TAG_lexical_block)((die.Tag() == DW_TAG_lexical_block) ? static_cast<void> (0) : __assert_fail ("die.Tag() == DW_TAG_lexical_block", "/build/llvm-toolchain-snapshot-8~svn345461/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3732, __PRETTY_FUNCTION__)); |
3733 | DWARFDIE containing_function_with_abstract_origin = |
3734 | GetContainingFunctionWithAbstractOrigin(die); |
3735 | if (!containing_function_with_abstract_origin) { |
3736 | return (clang::DeclContext *)ResolveBlockDIE(die); |
3737 | } |
3738 | DWARFDIE child = FindFirstChildWithAbstractOrigin( |
3739 | die, containing_function_with_abstract_origin); |
3740 | CompilerDeclContext decl_context = |
3741 | GetDeclContextContainingUIDFromDWARF(child); |
3742 | return (clang::DeclContext *)decl_context.GetOpaqueDeclContext(); |
3743 | } |
3744 | |
3745 | clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) { |
3746 | if (die && die.Tag() == DW_TAG_lexical_block) { |
3747 | clang::BlockDecl *decl = |
3748 | llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]); |
3749 | |
3750 | if (!decl) { |
3751 | DWARFDIE decl_context_die; |
3752 | clang::DeclContext *decl_context = |
3753 | GetClangDeclContextContainingDIE(die, &decl_context_die); |
3754 | decl = m_ast.CreateBlockDeclaration(decl_context); |
3755 | |
3756 | if (decl) |
3757 | LinkDeclContextToDIE((clang::DeclContext *)decl, die); |
3758 | } |
3759 | |
3760 | return decl; |
3761 | } |
3762 | return nullptr; |
3763 | } |
3764 | |
3765 | clang::NamespaceDecl * |
3766 | DWARFASTParserClang::ResolveNamespaceDIE(const DWARFDIE &die) { |
3767 | if (die && die.Tag() == DW_TAG_namespace) { |
3768 | // See if we already parsed this namespace DIE and associated it with a |
3769 | // uniqued namespace declaration |
3770 | clang::NamespaceDecl *namespace_decl = |
3771 | static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]); |
3772 | if (namespace_decl) |
3773 | return namespace_decl; |
3774 | else { |
3775 | const char *namespace_name = die.GetName(); |
3776 | clang::DeclContext *containing_decl_ctx = |
3777 | GetClangDeclContextContainingDIE(die, nullptr); |
3778 | namespace_decl = m_ast.GetUniqueNamespaceDeclaration(namespace_name, |
3779 | containing_decl_ctx); |
3780 | Log *log = |
3781 | nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
3782 | if (log) { |
3783 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3784 | if (namespace_name) { |
3785 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
3786 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
3787 | ": DW_TAG_namespace with DW_AT_name(\"%s\") => " |
3788 | "clang::NamespaceDecl *%p (original = %p)", |
3789 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
3790 | namespace_name, static_cast<void *>(namespace_decl), |
3791 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
3792 | } else { |
3793 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
3794 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
3795 | ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p " |
3796 | "(original = %p)", |
3797 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
3798 | static_cast<void *>(namespace_decl), |
3799 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
3800 | } |
3801 | } |
3802 | |
3803 | if (namespace_decl) |
3804 | LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die); |
3805 | return namespace_decl; |
3806 | } |
3807 | } |
3808 | return nullptr; |
3809 | } |
3810 | |
3811 | clang::DeclContext *DWARFASTParserClang::GetClangDeclContextContainingDIE( |
3812 | const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) { |
3813 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3814 | |
3815 | DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die); |
3816 | |
3817 | if (decl_ctx_die_copy) |
3818 | *decl_ctx_die_copy = decl_ctx_die; |
3819 | |
3820 | if (decl_ctx_die) { |
3821 | clang::DeclContext *clang_decl_ctx = |
3822 | GetClangDeclContextForDIE(decl_ctx_die); |
3823 | if (clang_decl_ctx) |
3824 | return clang_decl_ctx; |
3825 | } |
3826 | return m_ast.GetTranslationUnitDecl(); |
3827 | } |
3828 | |
3829 | clang::DeclContext * |
3830 | DWARFASTParserClang::GetCachedClangDeclContextForDIE(const DWARFDIE &die) { |
3831 | if (die) { |
3832 | DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); |
3833 | if (pos != m_die_to_decl_ctx.end()) |
3834 | return pos->second; |
3835 | } |
3836 | return nullptr; |
3837 | } |
3838 | |
3839 | void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx, |
3840 | const DWARFDIE &die) { |
3841 | m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; |
3842 | // There can be many DIEs for a single decl context |
3843 | // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); |
3844 | m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die)); |
3845 | } |
3846 | |
3847 | bool DWARFASTParserClang::CopyUniqueClassMethodTypes( |
3848 | const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die, |
3849 | lldb_private::Type *class_type, DWARFDIECollection &failures) { |
3850 | if (!class_type || !src_class_die || !dst_class_die) |
3851 | return false; |
3852 | if (src_class_die.Tag() != dst_class_die.Tag()) |
3853 | return false; |
3854 | |
3855 | // We need to complete the class type so we can get all of the method types |
3856 | // parsed so we can then unique those types to their equivalent counterparts |
3857 | // in "dst_cu" and "dst_class_die" |
3858 | class_type->GetFullCompilerType(); |
3859 | |
3860 | DWARFDIE src_die; |
3861 | DWARFDIE dst_die; |
3862 | UniqueCStringMap<DWARFDIE> src_name_to_die; |
3863 | UniqueCStringMap<DWARFDIE> dst_name_to_die; |
3864 | UniqueCStringMap<DWARFDIE> src_name_to_die_artificial; |
3865 | UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial; |
3866 | for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); |
3867 | src_die = src_die.GetSibling()) { |
3868 | if (src_die.Tag() == DW_TAG_subprogram) { |
3869 | // Make sure this is a declaration and not a concrete instance by looking |
3870 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
3871 | // are placed inside the class definitions and shouldn't be included in |
3872 | // the list of things are are tracking here. |
3873 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
3874 | const char *src_name = src_die.GetMangledName(); |
3875 | if (src_name) { |
3876 | ConstString src_const_name(src_name); |
3877 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
3878 | src_name_to_die_artificial.Append(src_const_name, src_die); |
3879 | else |
3880 | src_name_to_die.Append(src_const_name, src_die); |
3881 | } |
3882 | } |
3883 | } |
3884 | } |
3885 | for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); |
3886 | dst_die = dst_die.GetSibling()) { |
3887 | if (dst_die.Tag() == DW_TAG_subprogram) { |
3888 | // Make sure this is a declaration and not a concrete instance by looking |
3889 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
3890 | // are placed inside the class definitions and shouldn't be included in |
3891 | // the list of things are are tracking here. |
3892 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
3893 | const char *dst_name = dst_die.GetMangledName(); |
3894 | if (dst_name) { |
3895 | ConstString dst_const_name(dst_name); |
3896 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
3897 | dst_name_to_die_artificial.Append(dst_const_name, dst_die); |
3898 | else |
3899 | dst_name_to_die.Append(dst_const_name, dst_die); |
3900 | } |
3901 | } |
3902 | } |
3903 | } |
3904 | const uint32_t src_size = src_name_to_die.GetSize(); |
3905 | const uint32_t dst_size = dst_name_to_die.GetSize(); |
3906 | Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | |
3907 | // DWARF_LOG_TYPE_COMPLETION)); |
3908 | |
3909 | // Is everything kosher so we can go through the members at top speed? |
3910 | bool fast_path = true; |
3911 | |
3912 | if (src_size != dst_size) { |
3913 | if (src_size != 0 && dst_size != 0) { |
3914 | if (log) |
3915 | log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, " |
3916 | "but they didn't have the same size (src=%d, dst=%d)", |
3917 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
3918 | src_size, dst_size); |
3919 | } |
3920 | |
3921 | fast_path = false; |
3922 | } |
3923 | |
3924 | uint32_t idx; |
3925 | |
3926 | if (fast_path) { |
3927 | for (idx = 0; idx < src_size; ++idx) { |
3928 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
3929 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
3930 | |
3931 | if (src_die.Tag() != dst_die.Tag()) { |
3932 | if (log) |
3933 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
3934 | "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", |
3935 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
3936 | src_die.GetOffset(), src_die.GetTagAsCString(), |
3937 | dst_die.GetOffset(), dst_die.GetTagAsCString()); |
3938 | fast_path = false; |
3939 | } |
3940 | |
3941 | const char *src_name = src_die.GetMangledName(); |
3942 | const char *dst_name = dst_die.GetMangledName(); |
3943 | |
3944 | // Make sure the names match |
3945 | if (src_name == dst_name || (strcmp(src_name, dst_name) == 0)) |
3946 | continue; |
3947 | |
3948 | if (log) |
3949 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
3950 | "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", |
3951 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
3952 | src_die.GetOffset(), src_name, dst_die.GetOffset(), |
3953 | dst_name); |
3954 | |
3955 | fast_path = false; |
3956 | } |
3957 | } |
3958 | |
3959 | DWARFASTParserClang *src_dwarf_ast_parser = |
3960 | (DWARFASTParserClang *)src_die.GetDWARFParser(); |
3961 | DWARFASTParserClang *dst_dwarf_ast_parser = |
3962 | (DWARFASTParserClang *)dst_die.GetDWARFParser(); |
3963 | |
3964 | // Now do the work of linking the DeclContexts and Types. |
3965 | if (fast_path) { |
3966 | // We can do this quickly. Just run across the tables index-for-index |
3967 | // since we know each node has matching names and tags. |
3968 | for (idx = 0; idx < src_size; ++idx) { |
3969 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
3970 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
3971 | |
3972 | clang::DeclContext *src_decl_ctx = |
3973 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
3974 | if (src_decl_ctx) { |
3975 | if (log) |
3976 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
3977 | static_cast<void *>(src_decl_ctx), src_die.GetOffset(), |
3978 | dst_die.GetOffset()); |
3979 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
3980 | } else { |
3981 | if (log) |
3982 | log->Printf("warning: tried to unique decl context from 0x%8.8x for " |
3983 | "0x%8.8x, but none was found", |
3984 | src_die.GetOffset(), dst_die.GetOffset()); |
3985 | } |
3986 | |
3987 | Type *src_child_type = |
3988 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
3989 | if (src_child_type) { |
3990 | if (log) |
3991 | log->Printf( |
3992 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
3993 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
3994 | src_die.GetOffset(), dst_die.GetOffset()); |
3995 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
3996 | } else { |
3997 | if (log) |
3998 | log->Printf("warning: tried to unique lldb_private::Type from " |
3999 | "0x%8.8x for 0x%8.8x, but none was found", |
4000 | src_die.GetOffset(), dst_die.GetOffset()); |
4001 | } |
4002 | } |
4003 | } else { |
4004 | // We must do this slowly. For each member of the destination, look up a |
4005 | // member in the source with the same name, check its tag, and unique them |
4006 | // if everything matches up. Report failures. |
4007 | |
4008 | if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) { |
4009 | src_name_to_die.Sort(); |
4010 | |
4011 | for (idx = 0; idx < dst_size; ++idx) { |
4012 | ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx); |
4013 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
4014 | src_die = src_name_to_die.Find(dst_name, DWARFDIE()); |
4015 | |
4016 | if (src_die && (src_die.Tag() == dst_die.Tag())) { |
4017 | clang::DeclContext *src_decl_ctx = |
4018 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
4019 | if (src_decl_ctx) { |
4020 | if (log) |
4021 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
4022 | static_cast<void *>(src_decl_ctx), |
4023 | src_die.GetOffset(), dst_die.GetOffset()); |
4024 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
4025 | } else { |
4026 | if (log) |
4027 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
4028 | "for 0x%8.8x, but none was found", |
4029 | src_die.GetOffset(), dst_die.GetOffset()); |
4030 | } |
4031 | |
4032 | Type *src_child_type = |
4033 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
4034 | if (src_child_type) { |
4035 | if (log) |
4036 | log->Printf("uniquing type %p (uid=0x%" PRIx64"l" "x" |
4037 | ") from 0x%8.8x for 0x%8.8x", |
4038 | static_cast<void *>(src_child_type), |
4039 | src_child_type->GetID(), src_die.GetOffset(), |
4040 | dst_die.GetOffset()); |
4041 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = |
4042 | src_child_type; |
4043 | } else { |
4044 | if (log) |
4045 | log->Printf("warning: tried to unique lldb_private::Type from " |
4046 | "0x%8.8x for 0x%8.8x, but none was found", |
4047 | src_die.GetOffset(), dst_die.GetOffset()); |
4048 | } |
4049 | } else { |
4050 | if (log) |
4051 | log->Printf("warning: couldn't find a match for 0x%8.8x", |
4052 | dst_die.GetOffset()); |
4053 | |
4054 | failures.Append(dst_die); |
4055 | } |
4056 | } |
4057 | } |
4058 | } |
4059 | |
4060 | const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize(); |
4061 | const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize(); |
4062 | |
4063 | if (src_size_artificial && dst_size_artificial) { |
4064 | dst_name_to_die_artificial.Sort(); |
4065 | |
4066 | for (idx = 0; idx < src_size_artificial; ++idx) { |
4067 | ConstString src_name_artificial = |
4068 | src_name_to_die_artificial.GetCStringAtIndex(idx); |
4069 | src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
4070 | dst_die = |
4071 | dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); |
4072 | |
4073 | if (dst_die) { |
4074 | // Both classes have the artificial types, link them |
4075 | clang::DeclContext *src_decl_ctx = |
4076 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
4077 | if (src_decl_ctx) { |
4078 | if (log) |
4079 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
4080 | static_cast<void *>(src_decl_ctx), src_die.GetOffset(), |
4081 | dst_die.GetOffset()); |
4082 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
4083 | } else { |
4084 | if (log) |
4085 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
4086 | "for 0x%8.8x, but none was found", |
4087 | src_die.GetOffset(), dst_die.GetOffset()); |
4088 | } |
4089 | |
4090 | Type *src_child_type = |
4091 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
4092 | if (src_child_type) { |
4093 | if (log) |
4094 | log->Printf( |
4095 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
4096 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
4097 | src_die.GetOffset(), dst_die.GetOffset()); |
4098 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
4099 | } else { |
4100 | if (log) |
4101 | log->Printf("warning: tried to unique lldb_private::Type from " |
4102 | "0x%8.8x for 0x%8.8x, but none was found", |
4103 | src_die.GetOffset(), dst_die.GetOffset()); |
4104 | } |
4105 | } |
4106 | } |
4107 | } |
4108 | |
4109 | if (dst_size_artificial) { |
4110 | for (idx = 0; idx < dst_size_artificial; ++idx) { |
4111 | ConstString dst_name_artificial = |
4112 | dst_name_to_die_artificial.GetCStringAtIndex(idx); |
4113 | dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
4114 | if (log) |
4115 | log->Printf("warning: need to create artificial method for 0x%8.8x for " |
4116 | "method '%s'", |
4117 | dst_die.GetOffset(), dst_name_artificial.GetCString()); |
4118 | |
4119 | failures.Append(dst_die); |
4120 | } |
4121 | } |
4122 | |
4123 | return (failures.Size() != 0); |
4124 | } |