File: | tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp |
Warning: | line 1408, 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 | |
311 | type_name_cstr = form_value.AsCString(); |
312 | // Work around a bug in llvm-gcc where they give a name to a |
313 | // reference type which doesn't include the "&"... |
314 | if (tag == DW_TAG_reference_type) { |
315 | if (strchr(type_name_cstr, '&') == NULL__null) |
316 | type_name_cstr = NULL__null; |
317 | } |
318 | if (type_name_cstr) |
319 | type_name_const_str.SetCString(type_name_cstr); |
320 | break; |
321 | case DW_AT_byte_size: |
322 | byte_size = form_value.Unsigned(); |
323 | break; |
324 | case DW_AT_encoding: |
325 | encoding = form_value.Unsigned(); |
326 | break; |
327 | case DW_AT_type: |
328 | encoding_uid = form_value; |
329 | break; |
330 | default: |
331 | case DW_AT_sibling: |
332 | break; |
333 | } |
334 | } |
335 | } |
336 | } |
337 | |
338 | if (tag == DW_TAG_typedef && encoding_uid.IsValid()) { |
339 | // Try to parse a typedef from the DWO file first as modules can |
340 | // contain typedef'ed structures that have no names like: |
341 | // |
342 | // typedef struct { int a; } Foo; |
343 | // |
344 | // In this case we will have a structure with no name and a typedef |
345 | // named "Foo" that points to this unnamed structure. The name in the |
346 | // typedef is the only identifier for the struct, so always try to |
347 | // get typedefs from DWO files if possible. |
348 | // |
349 | // The type_sp returned will be empty if the typedef doesn't exist in |
350 | // a DWO file, so it is cheap to call this function just to check. |
351 | // |
352 | // If we don't do this we end up creating a TypeSP that says this is |
353 | // a typedef to type 0x123 (the DW_AT_type value would be 0x123 in |
354 | // the DW_TAG_typedef), and this is the unnamed structure type. We |
355 | // will have a hard time tracking down an unnammed structure type in |
356 | // the module DWO file, so we make sure we don't get into this |
357 | // situation by always resolving typedefs from the DWO file. |
358 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
359 | |
360 | // First make sure that the die that this is typedef'ed to _is_ just |
361 | // a declaration (DW_AT_declaration == 1), not a full definition |
362 | // since template types can't be represented in modules since only |
363 | // concrete instances of templates are ever emitted and modules won't |
364 | // contain those |
365 | if (encoding_die && |
366 | encoding_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == |
367 | 1) { |
368 | type_sp = ParseTypeFromDWO(die, log); |
369 | if (type_sp) |
370 | return type_sp; |
371 | } |
372 | } |
373 | |
374 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", |
375 | die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, |
376 | encoding_uid.Reference()); |
377 | |
378 | switch (tag) { |
379 | default: |
380 | break; |
381 | |
382 | case DW_TAG_unspecified_type: |
383 | if (strcmp(type_name_cstr, "nullptr_t") == 0 || |
384 | strcmp(type_name_cstr, "decltype(nullptr)") == 0) { |
385 | resolve_state = Type::eResolveStateFull; |
386 | clang_type = m_ast.GetBasicType(eBasicTypeNullPtr); |
387 | break; |
388 | } |
389 | // Fall through to base type below in case we can handle the type |
390 | // there... |
391 | LLVM_FALLTHROUGH[[clang::fallthrough]]; |
392 | |
393 | case DW_TAG_base_type: |
394 | resolve_state = Type::eResolveStateFull; |
395 | clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
396 | type_name_cstr, encoding, byte_size * 8); |
397 | break; |
398 | |
399 | case DW_TAG_pointer_type: |
400 | encoding_data_type = Type::eEncodingIsPointerUID; |
401 | break; |
402 | case DW_TAG_reference_type: |
403 | encoding_data_type = Type::eEncodingIsLValueReferenceUID; |
404 | break; |
405 | case DW_TAG_rvalue_reference_type: |
406 | encoding_data_type = Type::eEncodingIsRValueReferenceUID; |
407 | break; |
408 | case DW_TAG_typedef: |
409 | encoding_data_type = Type::eEncodingIsTypedefUID; |
410 | break; |
411 | case DW_TAG_const_type: |
412 | encoding_data_type = Type::eEncodingIsConstUID; |
413 | break; |
414 | case DW_TAG_restrict_type: |
415 | encoding_data_type = Type::eEncodingIsRestrictUID; |
416 | break; |
417 | case DW_TAG_volatile_type: |
418 | encoding_data_type = Type::eEncodingIsVolatileUID; |
419 | break; |
420 | } |
421 | |
422 | if (!clang_type && |
423 | (encoding_data_type == Type::eEncodingIsPointerUID || |
424 | encoding_data_type == Type::eEncodingIsTypedefUID) && |
425 | sc.comp_unit != NULL__null) { |
426 | if (tag == DW_TAG_pointer_type) { |
427 | DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type); |
428 | |
429 | if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0)) { |
430 | // Blocks have a __FuncPtr inside them which is a pointer to a |
431 | // function of the proper type. |
432 | |
433 | for (DWARFDIE child_die = target_die.GetFirstChild(); |
434 | child_die.IsValid(); child_die = child_die.GetSibling()) { |
435 | if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""), |
436 | "__FuncPtr")) { |
437 | DWARFDIE function_pointer_type = |
438 | child_die.GetReferencedDIE(DW_AT_type); |
439 | |
440 | if (function_pointer_type) { |
441 | DWARFDIE function_type = |
442 | function_pointer_type.GetReferencedDIE(DW_AT_type); |
443 | |
444 | bool function_type_is_new_pointer; |
445 | TypeSP lldb_function_type_sp = ParseTypeFromDWARF( |
446 | sc, function_type, log, &function_type_is_new_pointer); |
447 | |
448 | if (lldb_function_type_sp) { |
449 | clang_type = m_ast.CreateBlockPointerType( |
450 | lldb_function_type_sp->GetForwardCompilerType()); |
451 | encoding_data_type = Type::eEncodingIsUID; |
452 | encoding_uid.Clear(); |
453 | resolve_state = Type::eResolveStateFull; |
454 | } |
455 | } |
456 | |
457 | break; |
458 | } |
459 | } |
460 | } |
461 | } |
462 | |
463 | bool translation_unit_is_objc = |
464 | (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || |
465 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); |
466 | |
467 | if (translation_unit_is_objc) { |
468 | if (type_name_cstr != NULL__null) { |
469 | static ConstString g_objc_type_name_id("id"); |
470 | static ConstString g_objc_type_name_Class("Class"); |
471 | static ConstString g_objc_type_name_selector("SEL"); |
472 | |
473 | if (type_name_const_str == g_objc_type_name_id) { |
474 | if (log) |
475 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
476 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
477 | "is Objective-C 'id' built-in type.", |
478 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
479 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
480 | encoding_data_type = Type::eEncodingIsUID; |
481 | encoding_uid.Clear(); |
482 | resolve_state = Type::eResolveStateFull; |
483 | |
484 | } else if (type_name_const_str == g_objc_type_name_Class) { |
485 | if (log) |
486 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
487 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
488 | "is Objective-C 'Class' built-in type.", |
489 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
490 | clang_type = m_ast.GetBasicType(eBasicTypeObjCClass); |
491 | encoding_data_type = Type::eEncodingIsUID; |
492 | encoding_uid.Clear(); |
493 | resolve_state = Type::eResolveStateFull; |
494 | } else if (type_name_const_str == g_objc_type_name_selector) { |
495 | if (log) |
496 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
497 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
498 | "is Objective-C 'selector' built-in type.", |
499 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
500 | clang_type = m_ast.GetBasicType(eBasicTypeObjCSel); |
501 | encoding_data_type = Type::eEncodingIsUID; |
502 | encoding_uid.Clear(); |
503 | resolve_state = Type::eResolveStateFull; |
504 | } |
505 | } else if (encoding_data_type == Type::eEncodingIsPointerUID && |
506 | encoding_uid.IsValid()) { |
507 | // Clang sometimes erroneously emits id as objc_object*. In that |
508 | // case we fix up the type to "id". |
509 | |
510 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
511 | |
512 | if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) { |
513 | if (const char *struct_name = encoding_die.GetName()) { |
514 | if (!strcmp(struct_name, "objc_object")) { |
515 | if (log) |
516 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
517 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s " |
518 | "'%s' is 'objc_object*', which we overrode to " |
519 | "'id'.", |
520 | die.GetOffset(), die.GetTagAsCString(), |
521 | die.GetName()); |
522 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
523 | encoding_data_type = Type::eEncodingIsUID; |
524 | encoding_uid.Clear(); |
525 | resolve_state = Type::eResolveStateFull; |
526 | } |
527 | } |
528 | } |
529 | } |
530 | } |
531 | } |
532 | |
533 | type_sp.reset( |
534 | new Type(die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
535 | DIERef(encoding_uid).GetUID(dwarf), encoding_data_type, |
536 | &decl, clang_type, resolve_state)); |
537 | |
538 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
539 | } break; |
540 | |
541 | case DW_TAG_structure_type: |
542 | case DW_TAG_union_type: |
543 | case DW_TAG_class_type: { |
544 | // Set a bit that lets us know that we are currently parsing this |
545 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
546 | bool byte_size_valid = false; |
547 | |
548 | LanguageType class_language = eLanguageTypeUnknown; |
549 | bool is_complete_objc_class = false; |
550 | size_t calling_convention |
551 | = llvm::dwarf::CallingConvention::DW_CC_normal; |
552 | |
553 | const size_t num_attributes = die.GetAttributes(attributes); |
554 | if (num_attributes > 0) { |
555 | uint32_t i; |
556 | for (i = 0; i < num_attributes; ++i) { |
557 | attr = attributes.AttributeAtIndex(i); |
558 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
559 | switch (attr) { |
560 | case DW_AT_decl_file: |
561 | if (die.GetCU()->DW_AT_decl_file_attributes_are_invalid()) { |
562 | // llvm-gcc outputs invalid DW_AT_decl_file attributes that |
563 | // always point to the compile unit file, so we clear this |
564 | // invalid value so that we can still unique types |
565 | // efficiently. |
566 | decl.SetFile(FileSpec("<invalid>", false)); |
567 | } else |
568 | decl.SetFile( |
569 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
570 | form_value.Unsigned())); |
571 | break; |
572 | |
573 | case DW_AT_decl_line: |
574 | decl.SetLine(form_value.Unsigned()); |
575 | break; |
576 | |
577 | case DW_AT_decl_column: |
578 | decl.SetColumn(form_value.Unsigned()); |
579 | break; |
580 | |
581 | case DW_AT_name: |
582 | type_name_cstr = form_value.AsCString(); |
583 | type_name_const_str.SetCString(type_name_cstr); |
584 | break; |
585 | |
586 | case DW_AT_byte_size: |
587 | byte_size = form_value.Unsigned(); |
588 | byte_size_valid = true; |
589 | break; |
590 | |
591 | case DW_AT_accessibility: |
592 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
593 | break; |
594 | |
595 | case DW_AT_declaration: |
596 | is_forward_declaration = form_value.Boolean(); |
597 | break; |
598 | |
599 | case DW_AT_APPLE_runtime_class: |
600 | class_language = (LanguageType)form_value.Signed(); |
601 | break; |
602 | |
603 | case DW_AT_APPLE_objc_complete_type: |
604 | is_complete_objc_class = form_value.Signed(); |
605 | break; |
606 | case DW_AT_calling_convention: |
607 | calling_convention = form_value.Unsigned(); |
608 | break; |
609 | |
610 | case DW_AT_allocated: |
611 | case DW_AT_associated: |
612 | case DW_AT_data_location: |
613 | case DW_AT_description: |
614 | case DW_AT_start_scope: |
615 | case DW_AT_visibility: |
616 | default: |
617 | case DW_AT_sibling: |
618 | break; |
619 | } |
620 | } |
621 | } |
622 | } |
623 | |
624 | // UniqueDWARFASTType is large, so don't create a local variables on |
625 | // the stack, put it on the heap. This function is often called |
626 | // recursively and clang isn't good and sharing the stack space for |
627 | // variables in different blocks. |
628 | std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap( |
629 | new UniqueDWARFASTType()); |
630 | |
631 | ConstString unique_typename(type_name_const_str); |
632 | Declaration unique_decl(decl); |
633 | |
634 | if (type_name_const_str) { |
635 | LanguageType die_language = die.GetLanguage(); |
636 | if (Language::LanguageIsCPlusPlus(die_language)) { |
637 | // For C++, we rely solely upon the one definition rule that says |
638 | // only one thing can exist at a given decl context. We ignore the |
639 | // file and line that things are declared on. |
640 | std::string qualified_name; |
641 | if (die.GetQualifiedName(qualified_name)) |
642 | unique_typename = ConstString(qualified_name); |
643 | unique_decl.Clear(); |
644 | } |
645 | |
646 | if (dwarf->GetUniqueDWARFASTTypeMap().Find( |
647 | unique_typename, die, unique_decl, |
648 | byte_size_valid ? byte_size : -1, *unique_ast_entry_ap)) { |
649 | type_sp = unique_ast_entry_ap->m_type_sp; |
650 | if (type_sp) { |
651 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
652 | return type_sp; |
653 | } |
654 | } |
655 | } |
656 | |
657 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
658 | DW_TAG_value_to_name(tag), type_name_cstr); |
659 | |
660 | int tag_decl_kind = -1; |
661 | AccessType default_accessibility = eAccessNone; |
662 | if (tag == DW_TAG_structure_type) { |
663 | tag_decl_kind = clang::TTK_Struct; |
664 | default_accessibility = eAccessPublic; |
665 | } else if (tag == DW_TAG_union_type) { |
666 | tag_decl_kind = clang::TTK_Union; |
667 | default_accessibility = eAccessPublic; |
668 | } else if (tag == DW_TAG_class_type) { |
669 | tag_decl_kind = clang::TTK_Class; |
670 | default_accessibility = eAccessPrivate; |
671 | } |
672 | |
673 | if (byte_size_valid && byte_size == 0 && type_name_cstr && |
674 | die.HasChildren() == false && |
675 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC) { |
676 | // Work around an issue with clang at the moment where forward |
677 | // declarations for objective C classes are emitted as: |
678 | // DW_TAG_structure_type [2] |
679 | // DW_AT_name( "ForwardObjcClass" ) |
680 | // DW_AT_byte_size( 0x00 ) |
681 | // DW_AT_decl_file( "..." ) |
682 | // DW_AT_decl_line( 1 ) |
683 | // |
684 | // Note that there is no DW_AT_declaration and there are no children, |
685 | // and the byte size is zero. |
686 | is_forward_declaration = true; |
687 | } |
688 | |
689 | if (class_language == eLanguageTypeObjC || |
690 | class_language == eLanguageTypeObjC_plus_plus) { |
691 | if (!is_complete_objc_class && |
692 | die.Supports_DW_AT_APPLE_objc_complete_type()) { |
693 | // We have a valid eSymbolTypeObjCClass class symbol whose name |
694 | // matches the current objective C class that we are trying to find |
695 | // and this DIE isn't the complete definition (we checked |
696 | // is_complete_objc_class above and know it is false), so the real |
697 | // definition is in here somewhere |
698 | type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE( |
699 | die, type_name_const_str, true); |
700 | |
701 | if (!type_sp) { |
702 | SymbolFileDWARFDebugMap *debug_map_symfile = |
703 | dwarf->GetDebugMapSymfile(); |
704 | if (debug_map_symfile) { |
705 | // We weren't able to find a full declaration in this DWARF, |
706 | // see if we have a declaration anywhere else... |
707 | type_sp = |
708 | debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE( |
709 | die, type_name_const_str, true); |
710 | } |
711 | } |
712 | |
713 | if (type_sp) { |
714 | if (log) { |
715 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
716 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an " |
717 | "incomplete objc type, complete type is 0x%8.8" PRIx64"l" "x", |
718 | static_cast<void *>(this), die.GetOffset(), |
719 | DW_TAG_value_to_name(tag), type_name_cstr, |
720 | type_sp->GetID()); |
721 | } |
722 | |
723 | // We found a real definition for this type elsewhere so lets use |
724 | // it and cache the fact that we found a complete type for this |
725 | // die |
726 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
727 | return type_sp; |
728 | } |
729 | } |
730 | } |
731 | |
732 | if (is_forward_declaration) { |
733 | // We have a forward declaration to a type and we need to try and |
734 | // find a full declaration. We look in the current type index just in |
735 | // case we have a forward declaration followed by an actual |
736 | // declarations in the DWARF. If this fails, we need to look |
737 | // elsewhere... |
738 | if (log) { |
739 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
740 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
741 | "forward declaration, trying to find complete type", |
742 | static_cast<void *>(this), die.GetOffset(), |
743 | DW_TAG_value_to_name(tag), type_name_cstr); |
744 | } |
745 | |
746 | // See if the type comes from a DWO module and if so, track down that |
747 | // type. |
748 | type_sp = ParseTypeFromDWO(die, log); |
749 | if (type_sp) |
750 | return type_sp; |
751 | |
752 | DWARFDeclContext die_decl_ctx; |
753 | die.GetDWARFDeclContext(die_decl_ctx); |
754 | |
755 | // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, |
756 | // type_name_const_str); |
757 | type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
758 | |
759 | if (!type_sp) { |
760 | SymbolFileDWARFDebugMap *debug_map_symfile = |
761 | dwarf->GetDebugMapSymfile(); |
762 | if (debug_map_symfile) { |
763 | // We weren't able to find a full declaration in this DWARF, see |
764 | // if we have a declaration anywhere else... |
765 | type_sp = |
766 | debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( |
767 | die_decl_ctx); |
768 | } |
769 | } |
770 | |
771 | if (type_sp) { |
772 | if (log) { |
773 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
774 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
775 | "forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
776 | static_cast<void *>(this), die.GetOffset(), |
777 | DW_TAG_value_to_name(tag), type_name_cstr, type_sp->GetID()); |
778 | } |
779 | |
780 | // We found a real definition for this type elsewhere so lets use |
781 | // it and cache the fact that we found a complete type for this die |
782 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
783 | clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE( |
784 | dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf))); |
785 | if (defn_decl_ctx) |
786 | LinkDeclContextToDIE(defn_decl_ctx, die); |
787 | return type_sp; |
788 | } |
789 | } |
790 | assert(tag_decl_kind != -1)(static_cast <bool> (tag_decl_kind != -1) ? void (0) : __assert_fail ("tag_decl_kind != -1", "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 790, __extension__ __PRETTY_FUNCTION__)); |
791 | bool clang_type_was_created = false; |
792 | clang_type.SetCompilerType( |
793 | &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
794 | if (!clang_type) { |
795 | clang::DeclContext *decl_ctx = |
796 | GetClangDeclContextContainingDIE(die, nullptr); |
797 | |
798 | // If your decl context is a record that was imported from another |
799 | // AST context (in the gmodules case), we need to make sure the type |
800 | // backing the Decl is complete before adding children to it. This is |
801 | // not an issue in the non-gmodules case because the debug info will |
802 | // always contain a full definition of parent types in that case. |
803 | CompleteExternalTagDeclType(GetClangASTImporter(), decl_ctx, die, |
804 | type_name_cstr); |
805 | |
806 | if (accessibility == eAccessNone && decl_ctx) { |
807 | // Check the decl context that contains this class/struct/union. If |
808 | // it is a class we must give it an accessibility. |
809 | const clang::Decl::Kind containing_decl_kind = |
810 | decl_ctx->getDeclKind(); |
811 | if (DeclKindIsCXXClass(containing_decl_kind)) |
812 | accessibility = default_accessibility; |
813 | } |
814 | |
815 | ClangASTMetadata metadata; |
816 | metadata.SetUserID(die.GetID()); |
817 | metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die)); |
818 | |
819 | if (type_name_cstr && strchr(type_name_cstr, '<')) { |
820 | ClangASTContext::TemplateParameterInfos template_param_infos; |
821 | if (ParseTemplateParameterInfos(die, template_param_infos)) { |
822 | clang::ClassTemplateDecl *class_template_decl = |
823 | m_ast.ParseClassTemplateDecl(decl_ctx, accessibility, |
824 | type_name_cstr, tag_decl_kind, |
825 | template_param_infos); |
826 | if (!class_template_decl) { |
827 | if (log) { |
828 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
829 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" " |
830 | "clang::ClassTemplateDecl failed to return a decl.", |
831 | static_cast<void *>(this), die.GetOffset(), |
832 | DW_TAG_value_to_name(tag), type_name_cstr); |
833 | } |
834 | return TypeSP(); |
835 | } |
836 | |
837 | clang::ClassTemplateSpecializationDecl |
838 | *class_specialization_decl = |
839 | m_ast.CreateClassTemplateSpecializationDecl( |
840 | decl_ctx, class_template_decl, tag_decl_kind, |
841 | template_param_infos); |
842 | clang_type = m_ast.CreateClassTemplateSpecializationType( |
843 | class_specialization_decl); |
844 | clang_type_was_created = true; |
845 | |
846 | m_ast.SetMetadata(class_template_decl, metadata); |
847 | m_ast.SetMetadata(class_specialization_decl, metadata); |
848 | } |
849 | } |
850 | |
851 | if (!clang_type_was_created) { |
852 | clang_type_was_created = true; |
853 | clang_type = m_ast.CreateRecordType(decl_ctx, accessibility, |
854 | type_name_cstr, tag_decl_kind, |
855 | class_language, &metadata); |
856 | } |
857 | } |
858 | |
859 | // Store a forward declaration to this class type in case any |
860 | // parameters in any class methods need it for the clang types for |
861 | // function prototypes. |
862 | LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die); |
863 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
864 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
865 | Type::eEncodingIsUID, &decl, clang_type, |
866 | Type::eResolveStateForward)); |
867 | |
868 | type_sp->SetIsCompleteObjCClass(is_complete_objc_class); |
869 | |
870 | // Add our type to the unique type map so we don't end up creating many |
871 | // copies of the same type over and over in the ASTContext for our |
872 | // module |
873 | unique_ast_entry_ap->m_type_sp = type_sp; |
874 | unique_ast_entry_ap->m_die = die; |
875 | unique_ast_entry_ap->m_declaration = unique_decl; |
876 | unique_ast_entry_ap->m_byte_size = byte_size; |
877 | dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename, |
878 | *unique_ast_entry_ap); |
879 | |
880 | if (is_forward_declaration && die.HasChildren()) { |
881 | // Check to see if the DIE actually has a definition, some version of |
882 | // GCC will |
883 | // emit DIEs with DW_AT_declaration set to true, but yet still have |
884 | // subprogram, members, or inheritance, so we can't trust it |
885 | DWARFDIE child_die = die.GetFirstChild(); |
886 | while (child_die) { |
887 | switch (child_die.Tag()) { |
888 | case DW_TAG_inheritance: |
889 | case DW_TAG_subprogram: |
890 | case DW_TAG_member: |
891 | case DW_TAG_APPLE_property: |
892 | case DW_TAG_class_type: |
893 | case DW_TAG_structure_type: |
894 | case DW_TAG_enumeration_type: |
895 | case DW_TAG_typedef: |
896 | case DW_TAG_union_type: |
897 | child_die.Clear(); |
898 | is_forward_declaration = false; |
899 | break; |
900 | default: |
901 | child_die = child_die.GetSibling(); |
902 | break; |
903 | } |
904 | } |
905 | } |
906 | |
907 | if (!is_forward_declaration) { |
908 | // Always start the definition for a class type so that if the class |
909 | // has child classes or types that require the class to be created |
910 | // for use as their decl contexts the class will be ready to accept |
911 | // these child definitions. |
912 | if (die.HasChildren() == false) { |
913 | // No children for this struct/union/class, lets finish it |
914 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
915 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
916 | } else { |
917 | dwarf->GetObjectFile()->GetModule()->ReportError( |
918 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
919 | "definition.\nPlease file a bug and attach the file at the " |
920 | "start of this error message", |
921 | die.GetOffset(), type_name_cstr); |
922 | } |
923 | |
924 | if (tag == DW_TAG_structure_type) // this only applies in C |
925 | { |
926 | clang::RecordDecl *record_decl = |
927 | ClangASTContext::GetAsRecordDecl(clang_type); |
928 | |
929 | if (record_decl) { |
930 | GetClangASTImporter().InsertRecordDecl( |
931 | record_decl, ClangASTImporter::LayoutInfo()); |
932 | } |
933 | } |
934 | } else if (clang_type_was_created) { |
935 | // Start the definition if the class is not objective C since the |
936 | // underlying decls respond to isCompleteDefinition(). Objective |
937 | // C decls don't respond to isCompleteDefinition() so we can't |
938 | // start the declaration definition right away. For C++ |
939 | // class/union/structs we want to start the definition in case the |
940 | // class is needed as the declaration context for a contained class |
941 | // or type without the need to complete that type.. |
942 | |
943 | if (class_language != eLanguageTypeObjC && |
944 | class_language != eLanguageTypeObjC_plus_plus) |
945 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
946 | |
947 | // Leave this as a forward declaration until we need to know the |
948 | // details of the type. lldb_private::Type will automatically call |
949 | // the SymbolFile virtual function |
950 | // "SymbolFileDWARF::CompleteType(Type *)" When the definition |
951 | // needs to be defined. |
952 | assert(!dwarf->GetForwardDeclClangTypeToDie().count((static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie ().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType ()) && "Type already in the forward declaration map!" ) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 955, __extension__ __PRETTY_FUNCTION__)) |
953 | ClangUtil::RemoveFastQualifiers(clang_type)(static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie ().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType ()) && "Type already in the forward declaration map!" ) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 955, __extension__ __PRETTY_FUNCTION__)) |
954 | .GetOpaqueQualType()) &&(static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie ().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType ()) && "Type already in the forward declaration map!" ) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 955, __extension__ __PRETTY_FUNCTION__)) |
955 | "Type already in the forward declaration map!")(static_cast <bool> (!dwarf->GetForwardDeclClangTypeToDie ().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType ()) && "Type already in the forward declaration map!" ) ? void (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 955, __extension__ __PRETTY_FUNCTION__)); |
956 | // Can't assume m_ast.GetSymbolFile() is actually a |
957 | // SymbolFileDWARF, it can be a SymbolFileDWARFDebugMap for Apple |
958 | // binaries. |
959 | dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] = |
960 | clang_type.GetOpaqueQualType(); |
961 | dwarf->GetForwardDeclClangTypeToDie() |
962 | [ClangUtil::RemoveFastQualifiers(clang_type) |
963 | .GetOpaqueQualType()] = die.GetDIERef(); |
964 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true); |
965 | } |
966 | } |
967 | |
968 | // If we made a clang type, set the trivial abi if applicable: We only |
969 | // do this for pass by value - which implies the Trivial ABI. There |
970 | // isn't a way to assert that something that would normally be pass by |
971 | // value is pass by reference, so we ignore that attribute if set. |
972 | if (calling_convention == llvm::dwarf::DW_CC_pass_by_value) { |
973 | clang::CXXRecordDecl *record_decl = |
974 | m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); |
975 | if (record_decl) { |
976 | record_decl->setHasTrivialSpecialMemberForCall(); |
977 | } |
978 | } |
979 | |
980 | } break; |
981 | |
982 | case DW_TAG_enumeration_type: { |
983 | // Set a bit that lets us know that we are currently parsing this |
984 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
985 | |
986 | bool is_scoped = false; |
987 | DWARFFormValue encoding_form; |
988 | |
989 | const size_t num_attributes = die.GetAttributes(attributes); |
990 | if (num_attributes > 0) { |
991 | uint32_t i; |
992 | |
993 | for (i = 0; i < num_attributes; ++i) { |
994 | attr = attributes.AttributeAtIndex(i); |
995 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
996 | switch (attr) { |
997 | case DW_AT_decl_file: |
998 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
999 | form_value.Unsigned())); |
1000 | break; |
1001 | case DW_AT_decl_line: |
1002 | decl.SetLine(form_value.Unsigned()); |
1003 | break; |
1004 | case DW_AT_decl_column: |
1005 | decl.SetColumn(form_value.Unsigned()); |
1006 | break; |
1007 | case DW_AT_name: |
1008 | type_name_cstr = form_value.AsCString(); |
1009 | type_name_const_str.SetCString(type_name_cstr); |
1010 | break; |
1011 | case DW_AT_type: |
1012 | encoding_form = form_value; |
1013 | break; |
1014 | case DW_AT_byte_size: |
1015 | byte_size = form_value.Unsigned(); |
1016 | break; |
1017 | case DW_AT_accessibility: |
1018 | break; // accessibility = |
1019 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
1020 | case DW_AT_declaration: |
1021 | is_forward_declaration = form_value.Boolean(); |
1022 | break; |
1023 | case DW_AT_enum_class: |
1024 | is_scoped = form_value.Boolean(); |
1025 | break; |
1026 | case DW_AT_allocated: |
1027 | case DW_AT_associated: |
1028 | case DW_AT_bit_stride: |
1029 | case DW_AT_byte_stride: |
1030 | case DW_AT_data_location: |
1031 | case DW_AT_description: |
1032 | case DW_AT_start_scope: |
1033 | case DW_AT_visibility: |
1034 | case DW_AT_specification: |
1035 | case DW_AT_abstract_origin: |
1036 | case DW_AT_sibling: |
1037 | break; |
1038 | } |
1039 | } |
1040 | } |
1041 | |
1042 | if (is_forward_declaration) { |
1043 | type_sp = ParseTypeFromDWO(die, log); |
1044 | if (type_sp) |
1045 | return type_sp; |
1046 | |
1047 | DWARFDeclContext die_decl_ctx; |
1048 | die.GetDWARFDeclContext(die_decl_ctx); |
1049 | |
1050 | type_sp = |
1051 | dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
1052 | |
1053 | if (!type_sp) { |
1054 | SymbolFileDWARFDebugMap *debug_map_symfile = |
1055 | dwarf->GetDebugMapSymfile(); |
1056 | if (debug_map_symfile) { |
1057 | // We weren't able to find a full declaration in this DWARF, |
1058 | // see if we have a declaration anywhere else... |
1059 | type_sp = |
1060 | debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( |
1061 | die_decl_ctx); |
1062 | } |
1063 | } |
1064 | |
1065 | if (type_sp) { |
1066 | if (log) { |
1067 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
1068 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
1069 | "forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
1070 | static_cast<void *>(this), die.GetOffset(), |
1071 | DW_TAG_value_to_name(tag), type_name_cstr, |
1072 | type_sp->GetID()); |
1073 | } |
1074 | |
1075 | // We found a real definition for this type elsewhere so lets use |
1076 | // it and cache the fact that we found a complete type for this |
1077 | // die |
1078 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
1079 | clang::DeclContext *defn_decl_ctx = |
1080 | GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE( |
1081 | DIERef(type_sp->GetID(), dwarf))); |
1082 | if (defn_decl_ctx) |
1083 | LinkDeclContextToDIE(defn_decl_ctx, die); |
1084 | return type_sp; |
1085 | } |
1086 | } |
1087 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1088 | DW_TAG_value_to_name(tag), type_name_cstr); |
1089 | |
1090 | CompilerType enumerator_clang_type; |
1091 | clang_type.SetCompilerType( |
1092 | &m_ast, |
1093 | dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
1094 | if (!clang_type) { |
1095 | if (encoding_form.IsValid()) { |
1096 | Type *enumerator_type = |
1097 | dwarf->ResolveTypeUID(DIERef(encoding_form)); |
1098 | if (enumerator_type) |
1099 | enumerator_clang_type = enumerator_type->GetFullCompilerType(); |
1100 | } |
1101 | |
1102 | if (!enumerator_clang_type) { |
1103 | if (byte_size > 0) { |
1104 | enumerator_clang_type = |
1105 | m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
1106 | NULL__null, DW_ATE_signed, byte_size * 8); |
1107 | } else { |
1108 | enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt); |
1109 | } |
1110 | } |
1111 | |
1112 | clang_type = m_ast.CreateEnumerationType( |
1113 | type_name_cstr, GetClangDeclContextContainingDIE(die, nullptr), |
1114 | decl, enumerator_clang_type, is_scoped); |
1115 | } else { |
1116 | enumerator_clang_type = |
1117 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()); |
1118 | } |
1119 | |
1120 | LinkDeclContextToDIE( |
1121 | ClangASTContext::GetDeclContextForType(clang_type), die); |
1122 | |
1123 | type_sp.reset(new Type( |
1124 | die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
1125 | DIERef(encoding_form).GetUID(dwarf), Type::eEncodingIsUID, &decl, |
1126 | clang_type, Type::eResolveStateForward)); |
1127 | |
1128 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
1129 | if (die.HasChildren()) { |
1130 | SymbolContext cu_sc(die.GetLLDBCompileUnit()); |
1131 | bool is_signed = false; |
1132 | enumerator_clang_type.IsIntegerType(is_signed); |
1133 | ParseChildEnumerators(cu_sc, clang_type, is_signed, |
1134 | type_sp->GetByteSize(), die); |
1135 | } |
1136 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
1137 | } else { |
1138 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1139 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
1140 | "definition.\nPlease file a bug and attach the file at the " |
1141 | "start of this error message", |
1142 | die.GetOffset(), type_name_cstr); |
1143 | } |
1144 | } |
1145 | } break; |
1146 | |
1147 | case DW_TAG_inlined_subroutine: |
1148 | case DW_TAG_subprogram: |
1149 | case DW_TAG_subroutine_type: { |
1150 | // Set a bit that lets us know that we are currently parsing this |
1151 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
1152 | |
1153 | DWARFFormValue type_die_form; |
1154 | bool is_variadic = false; |
1155 | bool is_inline = false; |
1156 | bool is_static = false; |
1157 | bool is_virtual = false; |
1158 | bool is_explicit = false; |
1159 | bool is_artificial = false; |
1160 | bool has_template_params = false; |
1161 | DWARFFormValue specification_die_form; |
1162 | DWARFFormValue abstract_origin_die_form; |
1163 | dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
1164 | |
1165 | unsigned type_quals = 0; |
1166 | clang::StorageClass storage = |
1167 | clang::SC_None; //, Extern, Static, PrivateExtern |
1168 | |
1169 | const size_t num_attributes = die.GetAttributes(attributes); |
1170 | if (num_attributes > 0) { |
1171 | uint32_t i; |
1172 | for (i = 0; i < num_attributes; ++i) { |
1173 | attr = attributes.AttributeAtIndex(i); |
1174 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1175 | switch (attr) { |
1176 | case DW_AT_decl_file: |
1177 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
1178 | form_value.Unsigned())); |
1179 | break; |
1180 | case DW_AT_decl_line: |
1181 | decl.SetLine(form_value.Unsigned()); |
1182 | break; |
1183 | case DW_AT_decl_column: |
1184 | decl.SetColumn(form_value.Unsigned()); |
1185 | break; |
1186 | case DW_AT_name: |
1187 | type_name_cstr = form_value.AsCString(); |
1188 | type_name_const_str.SetCString(type_name_cstr); |
1189 | break; |
1190 | |
1191 | case DW_AT_linkage_name: |
1192 | case DW_AT_MIPS_linkage_name: |
1193 | mangled_name_cstr = form_value.AsCString(); |
1194 | break; |
1195 | case DW_AT_type: |
1196 | type_die_form = form_value; |
1197 | break; |
1198 | case DW_AT_accessibility: |
1199 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
1200 | break; |
1201 | case DW_AT_declaration: |
1202 | break; // is_forward_declaration = form_value.Boolean(); break; |
1203 | case DW_AT_inline: |
1204 | is_inline = form_value.Boolean(); |
1205 | break; |
1206 | case DW_AT_virtuality: |
1207 | is_virtual = form_value.Boolean(); |
1208 | break; |
1209 | case DW_AT_explicit: |
1210 | is_explicit = form_value.Boolean(); |
1211 | break; |
1212 | case DW_AT_artificial: |
1213 | is_artificial = form_value.Boolean(); |
1214 | break; |
1215 | |
1216 | case DW_AT_external: |
1217 | if (form_value.Unsigned()) { |
1218 | if (storage == clang::SC_None) |
1219 | storage = clang::SC_Extern; |
1220 | else |
1221 | storage = clang::SC_PrivateExtern; |
1222 | } |
1223 | break; |
1224 | |
1225 | case DW_AT_specification: |
1226 | specification_die_form = form_value; |
1227 | break; |
1228 | |
1229 | case DW_AT_abstract_origin: |
1230 | abstract_origin_die_form = form_value; |
1231 | break; |
1232 | |
1233 | case DW_AT_object_pointer: |
1234 | object_pointer_die_offset = form_value.Reference(); |
1235 | break; |
1236 | |
1237 | case DW_AT_allocated: |
1238 | case DW_AT_associated: |
1239 | case DW_AT_address_class: |
1240 | case DW_AT_calling_convention: |
1241 | case DW_AT_data_location: |
1242 | case DW_AT_elemental: |
1243 | case DW_AT_entry_pc: |
1244 | case DW_AT_frame_base: |
1245 | case DW_AT_high_pc: |
1246 | case DW_AT_low_pc: |
1247 | case DW_AT_prototyped: |
1248 | case DW_AT_pure: |
1249 | case DW_AT_ranges: |
1250 | case DW_AT_recursive: |
1251 | case DW_AT_return_addr: |
1252 | case DW_AT_segment: |
1253 | case DW_AT_start_scope: |
1254 | case DW_AT_static_link: |
1255 | case DW_AT_trampoline: |
1256 | case DW_AT_visibility: |
1257 | case DW_AT_vtable_elem_location: |
1258 | case DW_AT_description: |
1259 | case DW_AT_sibling: |
1260 | break; |
1261 | } |
1262 | } |
1263 | } |
1264 | } |
1265 | |
1266 | std::string object_pointer_name; |
1267 | if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) { |
1268 | DWARFDIE object_pointer_die = die.GetDIE(object_pointer_die_offset); |
1269 | if (object_pointer_die) { |
1270 | const char *object_pointer_name_cstr = object_pointer_die.GetName(); |
1271 | if (object_pointer_name_cstr) |
1272 | object_pointer_name = object_pointer_name_cstr; |
1273 | } |
1274 | } |
1275 | |
1276 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1277 | DW_TAG_value_to_name(tag), type_name_cstr); |
1278 | |
1279 | CompilerType return_clang_type; |
1280 | Type *func_type = NULL__null; |
1281 | |
1282 | if (type_die_form.IsValid()) |
1283 | func_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
1284 | |
1285 | if (func_type) |
1286 | return_clang_type = func_type->GetForwardCompilerType(); |
1287 | else |
1288 | return_clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
1289 | |
1290 | std::vector<CompilerType> function_param_types; |
1291 | std::vector<clang::ParmVarDecl *> function_param_decls; |
1292 | |
1293 | // Parse the function children for the parameters |
1294 | |
1295 | DWARFDIE decl_ctx_die; |
1296 | clang::DeclContext *containing_decl_ctx = |
1297 | GetClangDeclContextContainingDIE(die, &decl_ctx_die); |
1298 | const clang::Decl::Kind containing_decl_kind = |
1299 | containing_decl_ctx->getDeclKind(); |
1300 | |
1301 | bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind); |
1302 | // Start off static. This will be set to false in |
1303 | // ParseChildParameters(...) if we find a "this" parameters as the |
1304 | // first parameter |
1305 | if (is_cxx_method) { |
1306 | is_static = true; |
1307 | } |
1308 | |
1309 | if (die.HasChildren()) { |
1310 | bool skip_artificial = true; |
1311 | ParseChildParameters(sc, containing_decl_ctx, die, skip_artificial, |
1312 | is_static, is_variadic, has_template_params, |
1313 | function_param_types, function_param_decls, |
1314 | type_quals); |
1315 | } |
1316 | |
1317 | bool ignore_containing_context = false; |
1318 | // Check for templatized class member functions. If we had any |
1319 | // DW_TAG_template_type_parameter or DW_TAG_template_value_parameter |
1320 | // the DW_TAG_subprogram DIE, then we can't let this become a method in |
1321 | // a class. Why? Because templatized functions are only emitted if one |
1322 | // of the templatized methods is used in the current compile unit and |
1323 | // we will end up with classes that may or may not include these member |
1324 | // functions and this means one class won't match another class |
1325 | // definition and it affects our ability to use a class in the clang |
1326 | // expression parser. So for the greater good, we currently must not |
1327 | // allow any template member functions in a class definition. |
1328 | if (is_cxx_method && has_template_params) { |
1329 | ignore_containing_context = true; |
1330 | is_cxx_method = false; |
1331 | } |
1332 | |
1333 | // clang_type will get the function prototype clang type after this |
1334 | // call |
1335 | clang_type = m_ast.CreateFunctionType( |
1336 | return_clang_type, function_param_types.data(), |
1337 | function_param_types.size(), is_variadic, type_quals); |
1338 | |
1339 | if (type_name_cstr) { |
1340 | bool type_handled = false; |
1341 | if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) { |
1342 | ObjCLanguage::MethodName objc_method(type_name_cstr, true); |
1343 | if (objc_method.IsValid(true)) { |
1344 | CompilerType class_opaque_type; |
1345 | ConstString class_name(objc_method.GetClassName()); |
1346 | if (class_name) { |
1347 | TypeSP complete_objc_class_type_sp( |
1348 | dwarf->FindCompleteObjCDefinitionTypeForDIE( |
1349 | DWARFDIE(), class_name, false)); |
1350 | |
1351 | if (complete_objc_class_type_sp) { |
1352 | CompilerType type_clang_forward_type = |
1353 | complete_objc_class_type_sp->GetForwardCompilerType(); |
1354 | if (ClangASTContext::IsObjCObjectOrInterfaceType( |
1355 | type_clang_forward_type)) |
1356 | class_opaque_type = type_clang_forward_type; |
1357 | } |
1358 | } |
1359 | |
1360 | if (class_opaque_type) { |
1361 | // If accessibility isn't set to anything valid, assume public |
1362 | // for now... |
1363 | if (accessibility == eAccessNone) |
1364 | accessibility = eAccessPublic; |
1365 | |
1366 | clang::ObjCMethodDecl *objc_method_decl = |
1367 | m_ast.AddMethodToObjCObjectType( |
1368 | class_opaque_type, type_name_cstr, clang_type, |
1369 | accessibility, is_artificial, is_variadic); |
1370 | type_handled = objc_method_decl != NULL__null; |
1371 | if (type_handled) { |
1372 | LinkDeclContextToDIE( |
1373 | ClangASTContext::GetAsDeclContext(objc_method_decl), die); |
1374 | m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID()); |
1375 | } else { |
1376 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1377 | "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), " |
1378 | "please file a bug and attach the file at the start of " |
1379 | "this error message", |
1380 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
1381 | } |
1382 | } |
1383 | } else if (is_cxx_method) { |
1384 | // Look at the parent of this DIE and see if is is a class or |
1385 | // struct and see if this is actually a C++ method |
1386 | Type *class_type = dwarf->ResolveType(decl_ctx_die); |
1387 | if (class_type) { |
1388 | bool alternate_defn = false; |
1389 | if (class_type->GetID() != decl_ctx_die.GetID() || |
1390 | decl_ctx_die.GetContainingDWOModuleDIE()) { |
1391 | alternate_defn = true; |
1392 | |
1393 | // We uniqued the parent class of this function to another |
1394 | // class so we now need to associate all dies under |
1395 | // "decl_ctx_die" to DIEs in the DIE for "class_type"... |
1396 | SymbolFileDWARF *class_symfile = NULL__null; |
1397 | DWARFDIE class_type_die; |
1398 | |
1399 | SymbolFileDWARFDebugMap *debug_map_symfile = |
1400 | dwarf->GetDebugMapSymfile(); |
1401 | if (debug_map_symfile) { |
1402 | class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex( |
1403 | SymbolFileDWARFDebugMap::GetOSOIndexFromUserID( |
1404 | class_type->GetID())); |
1405 | class_type_die = class_symfile->DebugInfo()->GetDIE( |
1406 | DIERef(class_type->GetID(), dwarf)); |
1407 | } else { |
1408 | class_symfile = dwarf; |
Value stored to 'class_symfile' is never read | |
1409 | class_type_die = dwarf->DebugInfo()->GetDIE( |
1410 | DIERef(class_type->GetID(), dwarf)); |
1411 | } |
1412 | if (class_type_die) { |
1413 | DWARFDIECollection failures; |
1414 | |
1415 | CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die, |
1416 | class_type, failures); |
1417 | |
1418 | // FIXME do something with these failures that's smarter |
1419 | // than |
1420 | // just dropping them on the ground. Unfortunately classes |
1421 | // don't like having stuff added to them after their |
1422 | // definitions are complete... |
1423 | |
1424 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
1425 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1426 | type_sp = type_ptr->shared_from_this(); |
1427 | break; |
1428 | } |
1429 | } |
1430 | } |
1431 | |
1432 | if (specification_die_form.IsValid()) { |
1433 | // We have a specification which we are going to base our |
1434 | // function prototype off of, so we need this type to be |
1435 | // completed so that the m_die_to_decl_ctx for the method in |
1436 | // the specification has a valid clang decl context. |
1437 | class_type->GetForwardCompilerType(); |
1438 | // If we have a specification, then the function type should |
1439 | // have been made with the specification and not with this |
1440 | // die. |
1441 | DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE( |
1442 | DIERef(specification_die_form)); |
1443 | clang::DeclContext *spec_clang_decl_ctx = |
1444 | GetClangDeclContextForDIE(spec_die); |
1445 | if (spec_clang_decl_ctx) { |
1446 | LinkDeclContextToDIE(spec_clang_decl_ctx, die); |
1447 | } else { |
1448 | dwarf->GetObjectFile()->GetModule()->ReportWarning( |
1449 | "0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8" PRIx64"l" "x" |
1450 | ") has no decl\n", |
1451 | die.GetID(), specification_die_form.Reference()); |
1452 | } |
1453 | type_handled = true; |
1454 | } else if (abstract_origin_die_form.IsValid()) { |
1455 | // We have a specification which we are going to base our |
1456 | // function prototype off of, so we need this type to be |
1457 | // completed so that the m_die_to_decl_ctx for the method in |
1458 | // the abstract origin has a valid clang decl context. |
1459 | class_type->GetForwardCompilerType(); |
1460 | |
1461 | DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE( |
1462 | DIERef(abstract_origin_die_form)); |
1463 | clang::DeclContext *abs_clang_decl_ctx = |
1464 | GetClangDeclContextForDIE(abs_die); |
1465 | if (abs_clang_decl_ctx) { |
1466 | LinkDeclContextToDIE(abs_clang_decl_ctx, die); |
1467 | } else { |
1468 | dwarf->GetObjectFile()->GetModule()->ReportWarning( |
1469 | "0x%8.8" PRIx64"l" "x" ": DW_AT_abstract_origin(0x%8.8" PRIx64"l" "x" |
1470 | ") has no decl\n", |
1471 | die.GetID(), abstract_origin_die_form.Reference()); |
1472 | } |
1473 | type_handled = true; |
1474 | } else { |
1475 | CompilerType class_opaque_type = |
1476 | class_type->GetForwardCompilerType(); |
1477 | if (ClangASTContext::IsCXXClassType(class_opaque_type)) { |
1478 | if (class_opaque_type.IsBeingDefined() || alternate_defn) { |
1479 | if (!is_static && !die.HasChildren()) { |
1480 | // We have a C++ member function with no children (this |
1481 | // pointer!) and clang will get mad if we try and make |
1482 | // a function that isn't well formed in the DWARF, so |
1483 | // we will just skip it... |
1484 | type_handled = true; |
1485 | } else { |
1486 | bool add_method = true; |
1487 | if (alternate_defn) { |
1488 | // If an alternate definition for the class exists, |
1489 | // then add the method only if an equivalent is not |
1490 | // already present. |
1491 | clang::CXXRecordDecl *record_decl = |
1492 | m_ast.GetAsCXXRecordDecl( |
1493 | class_opaque_type.GetOpaqueQualType()); |
1494 | if (record_decl) { |
1495 | for (auto method_iter = record_decl->method_begin(); |
1496 | method_iter != record_decl->method_end(); |
1497 | method_iter++) { |
1498 | clang::CXXMethodDecl *method_decl = *method_iter; |
1499 | if (method_decl->getNameInfo().getAsString() == |
1500 | std::string(type_name_cstr)) { |
1501 | if (method_decl->getType() == |
1502 | ClangUtil::GetQualType(clang_type)) { |
1503 | add_method = false; |
1504 | LinkDeclContextToDIE( |
1505 | ClangASTContext::GetAsDeclContext( |
1506 | method_decl), |
1507 | die); |
1508 | type_handled = true; |
1509 | |
1510 | break; |
1511 | } |
1512 | } |
1513 | } |
1514 | } |
1515 | } |
1516 | |
1517 | if (add_method) { |
1518 | llvm::PrettyStackTraceFormat stack_trace( |
1519 | "SymbolFileDWARF::ParseType() is adding a method " |
1520 | "%s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s", |
1521 | type_name_cstr, |
1522 | class_type->GetName().GetCString(), die.GetID(), |
1523 | dwarf->GetObjectFile() |
1524 | ->GetFileSpec() |
1525 | .GetPath() |
1526 | .c_str()); |
1527 | |
1528 | const bool is_attr_used = false; |
1529 | // Neither GCC 4.2 nor clang++ currently set a valid |
1530 | // accessibility in the DWARF for C++ methods... |
1531 | // Default to public for now... |
1532 | if (accessibility == eAccessNone) |
1533 | accessibility = eAccessPublic; |
1534 | |
1535 | clang::CXXMethodDecl *cxx_method_decl = |
1536 | m_ast.AddMethodToCXXRecordType( |
1537 | class_opaque_type.GetOpaqueQualType(), |
1538 | type_name_cstr, mangled_name_cstr, clang_type, |
1539 | accessibility, is_virtual, is_static, |
1540 | is_inline, is_explicit, is_attr_used, |
1541 | is_artificial); |
1542 | |
1543 | type_handled = cxx_method_decl != NULL__null; |
1544 | |
1545 | if (type_handled) { |
1546 | LinkDeclContextToDIE( |
1547 | ClangASTContext::GetAsDeclContext( |
1548 | cxx_method_decl), |
1549 | die); |
1550 | |
1551 | ClangASTMetadata metadata; |
1552 | metadata.SetUserID(die.GetID()); |
1553 | |
1554 | if (!object_pointer_name.empty()) { |
1555 | metadata.SetObjectPtrName( |
1556 | object_pointer_name.c_str()); |
1557 | if (log) |
1558 | log->Printf( |
1559 | "Setting object pointer name: %s on method " |
1560 | "object %p.\n", |
1561 | object_pointer_name.c_str(), |
1562 | static_cast<void *>(cxx_method_decl)); |
1563 | } |
1564 | m_ast.SetMetadata(cxx_method_decl, metadata); |
1565 | } else { |
1566 | ignore_containing_context = true; |
1567 | } |
1568 | } |
1569 | } |
1570 | } else { |
1571 | // We were asked to parse the type for a method in a |
1572 | // class, yet the class hasn't been asked to complete |
1573 | // itself through the clang::ExternalASTSource protocol, |
1574 | // so we need to just have the class complete itself and |
1575 | // do things the right way, then our |
1576 | // DIE should then have an entry in the |
1577 | // dwarf->GetDIEToType() map. First |
1578 | // we need to modify the dwarf->GetDIEToType() so it |
1579 | // doesn't think we are trying to parse this DIE |
1580 | // anymore... |
1581 | dwarf->GetDIEToType()[die.GetDIE()] = NULL__null; |
1582 | |
1583 | // Now we get the full type to force our class type to |
1584 | // complete itself using the clang::ExternalASTSource |
1585 | // protocol which will parse all base classes and all |
1586 | // methods (including the method for this DIE). |
1587 | class_type->GetFullCompilerType(); |
1588 | |
1589 | // The type for this DIE should have been filled in the |
1590 | // function call above |
1591 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
1592 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1593 | type_sp = type_ptr->shared_from_this(); |
1594 | break; |
1595 | } |
1596 | |
1597 | // FIXME This is fixing some even uglier behavior but we |
1598 | // really need to |
1599 | // uniq the methods of each class as well as the class |
1600 | // itself. <rdar://problem/11240464> |
1601 | type_handled = true; |
1602 | } |
1603 | } |
1604 | } |
1605 | } |
1606 | } |
1607 | } |
1608 | |
1609 | if (!type_handled) { |
1610 | clang::FunctionDecl *function_decl = nullptr; |
1611 | |
1612 | if (abstract_origin_die_form.IsValid()) { |
1613 | DWARFDIE abs_die = |
1614 | dwarf->DebugInfo()->GetDIE(DIERef(abstract_origin_die_form)); |
1615 | |
1616 | SymbolContext sc; |
1617 | |
1618 | if (dwarf->ResolveType(abs_die)) { |
1619 | function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>( |
1620 | GetCachedClangDeclContextForDIE(abs_die)); |
1621 | |
1622 | if (function_decl) { |
1623 | LinkDeclContextToDIE(function_decl, die); |
1624 | } |
1625 | } |
1626 | } |
1627 | |
1628 | if (!function_decl) { |
1629 | // We just have a function that isn't part of a class |
1630 | function_decl = m_ast.CreateFunctionDeclaration( |
1631 | ignore_containing_context ? m_ast.GetTranslationUnitDecl() |
1632 | : containing_decl_ctx, |
1633 | type_name_cstr, clang_type, storage, is_inline); |
1634 | |
1635 | if (has_template_params) { |
1636 | ClangASTContext::TemplateParameterInfos template_param_infos; |
1637 | ParseTemplateParameterInfos(die, template_param_infos); |
1638 | clang::FunctionTemplateDecl *func_template_decl = |
1639 | m_ast.CreateFunctionTemplateDecl( |
1640 | containing_decl_ctx, function_decl, type_name_cstr, |
1641 | template_param_infos); |
1642 | m_ast.CreateFunctionTemplateSpecializationInfo( |
1643 | function_decl, func_template_decl, template_param_infos); |
1644 | } |
1645 | |
1646 | lldbassert(function_decl)lldb_private::lldb_assert(function_decl, "function_decl", __FUNCTION__ , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1646); |
1647 | |
1648 | if (function_decl) { |
1649 | LinkDeclContextToDIE(function_decl, die); |
1650 | |
1651 | if (!function_param_decls.empty()) |
1652 | m_ast.SetFunctionParameters(function_decl, |
1653 | &function_param_decls.front(), |
1654 | function_param_decls.size()); |
1655 | |
1656 | ClangASTMetadata metadata; |
1657 | metadata.SetUserID(die.GetID()); |
1658 | |
1659 | if (!object_pointer_name.empty()) { |
1660 | metadata.SetObjectPtrName(object_pointer_name.c_str()); |
1661 | if (log) |
1662 | log->Printf("Setting object pointer name: %s on function " |
1663 | "object %p.", |
1664 | object_pointer_name.c_str(), |
1665 | static_cast<void *>(function_decl)); |
1666 | } |
1667 | m_ast.SetMetadata(function_decl, metadata); |
1668 | } |
1669 | } |
1670 | } |
1671 | } |
1672 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 0, NULL__null, |
1673 | LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingIsUID, &decl, |
1674 | clang_type, Type::eResolveStateFull)); |
1675 | assert(type_sp.get())(static_cast <bool> (type_sp.get()) ? void (0) : __assert_fail ("type_sp.get()", "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1675, __extension__ __PRETTY_FUNCTION__)); |
1676 | } break; |
1677 | |
1678 | case DW_TAG_array_type: { |
1679 | // Set a bit that lets us know that we are currently parsing this |
1680 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
1681 | |
1682 | DWARFFormValue type_die_form; |
1683 | int64_t first_index = 0; |
1684 | uint32_t byte_stride = 0; |
1685 | uint32_t bit_stride = 0; |
1686 | bool is_vector = false; |
1687 | const size_t num_attributes = die.GetAttributes(attributes); |
1688 | |
1689 | if (num_attributes > 0) { |
1690 | uint32_t i; |
1691 | for (i = 0; i < num_attributes; ++i) { |
1692 | attr = attributes.AttributeAtIndex(i); |
1693 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1694 | switch (attr) { |
1695 | case DW_AT_decl_file: |
1696 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
1697 | form_value.Unsigned())); |
1698 | break; |
1699 | case DW_AT_decl_line: |
1700 | decl.SetLine(form_value.Unsigned()); |
1701 | break; |
1702 | case DW_AT_decl_column: |
1703 | decl.SetColumn(form_value.Unsigned()); |
1704 | break; |
1705 | case DW_AT_name: |
1706 | type_name_cstr = form_value.AsCString(); |
1707 | type_name_const_str.SetCString(type_name_cstr); |
1708 | break; |
1709 | |
1710 | case DW_AT_type: |
1711 | type_die_form = form_value; |
1712 | break; |
1713 | case DW_AT_byte_size: |
1714 | break; // byte_size = form_value.Unsigned(); break; |
1715 | case DW_AT_byte_stride: |
1716 | byte_stride = form_value.Unsigned(); |
1717 | break; |
1718 | case DW_AT_bit_stride: |
1719 | bit_stride = form_value.Unsigned(); |
1720 | break; |
1721 | case DW_AT_GNU_vector: |
1722 | is_vector = form_value.Boolean(); |
1723 | break; |
1724 | case DW_AT_accessibility: |
1725 | break; // accessibility = |
1726 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
1727 | case DW_AT_declaration: |
1728 | break; // is_forward_declaration = form_value.Boolean(); break; |
1729 | case DW_AT_allocated: |
1730 | case DW_AT_associated: |
1731 | case DW_AT_data_location: |
1732 | case DW_AT_description: |
1733 | case DW_AT_ordering: |
1734 | case DW_AT_start_scope: |
1735 | case DW_AT_visibility: |
1736 | case DW_AT_specification: |
1737 | case DW_AT_abstract_origin: |
1738 | case DW_AT_sibling: |
1739 | break; |
1740 | } |
1741 | } |
1742 | } |
1743 | |
1744 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1745 | DW_TAG_value_to_name(tag), type_name_cstr); |
1746 | |
1747 | DIERef type_die_ref(type_die_form); |
1748 | Type *element_type = dwarf->ResolveTypeUID(type_die_ref); |
1749 | |
1750 | if (element_type) { |
1751 | std::vector<uint64_t> element_orders; |
1752 | ParseChildArrayInfo(sc, die, first_index, element_orders, |
1753 | byte_stride, bit_stride); |
1754 | if (byte_stride == 0 && bit_stride == 0) |
1755 | byte_stride = element_type->GetByteSize(); |
1756 | CompilerType array_element_type = |
1757 | element_type->GetForwardCompilerType(); |
1758 | |
1759 | if (ClangASTContext::IsCXXClassType(array_element_type) && |
1760 | array_element_type.GetCompleteType() == false) { |
1761 | ModuleSP module_sp = die.GetModule(); |
1762 | if (module_sp) { |
1763 | if (die.GetCU()->GetProducer() == eProducerClang) |
1764 | module_sp->ReportError( |
1765 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
1766 | "class/union/struct element type DIE 0x%8.8x that is a " |
1767 | "forward declaration, not a complete definition.\nTry " |
1768 | "compiling the source file with -fstandalone-debug or " |
1769 | "disable -gmodules", |
1770 | die.GetOffset(), type_die_ref.die_offset); |
1771 | else |
1772 | module_sp->ReportError( |
1773 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
1774 | "class/union/struct element type DIE 0x%8.8x that is a " |
1775 | "forward declaration, not a complete definition.\nPlease " |
1776 | "file a bug against the compiler and include the " |
1777 | "preprocessed output for %s", |
1778 | die.GetOffset(), type_die_ref.die_offset, |
1779 | die.GetLLDBCompileUnit() |
1780 | ? die.GetLLDBCompileUnit()->GetPath().c_str() |
1781 | : "the source file"); |
1782 | } |
1783 | |
1784 | // We have no choice other than to pretend that the element class |
1785 | // type is complete. If we don't do this, clang will crash when |
1786 | // trying to layout the class. Since we provide layout |
1787 | // assistance, all ivars in this class and other classes will be |
1788 | // fine, this is the best we can do short of crashing. |
1789 | if (ClangASTContext::StartTagDeclarationDefinition( |
1790 | array_element_type)) { |
1791 | ClangASTContext::CompleteTagDeclarationDefinition( |
1792 | array_element_type); |
1793 | } else { |
1794 | module_sp->ReportError("DWARF DIE at 0x%8.8x was not able to " |
1795 | "start its definition.\nPlease file a " |
1796 | "bug and attach the file at the start " |
1797 | "of this error message", |
1798 | type_die_ref.die_offset); |
1799 | } |
1800 | } |
1801 | |
1802 | uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; |
1803 | if (element_orders.size() > 0) { |
1804 | uint64_t num_elements = 0; |
1805 | std::vector<uint64_t>::const_reverse_iterator pos; |
1806 | std::vector<uint64_t>::const_reverse_iterator end = |
1807 | element_orders.rend(); |
1808 | for (pos = element_orders.rbegin(); pos != end; ++pos) { |
1809 | num_elements = *pos; |
1810 | clang_type = m_ast.CreateArrayType(array_element_type, |
1811 | num_elements, is_vector); |
1812 | array_element_type = clang_type; |
1813 | array_element_bit_stride = |
1814 | num_elements ? array_element_bit_stride * num_elements |
1815 | : array_element_bit_stride; |
1816 | } |
1817 | } else { |
1818 | clang_type = |
1819 | m_ast.CreateArrayType(array_element_type, 0, is_vector); |
1820 | } |
1821 | ConstString empty_name; |
1822 | type_sp.reset(new Type( |
1823 | die.GetID(), dwarf, empty_name, array_element_bit_stride / 8, |
1824 | NULL__null, DIERef(type_die_form).GetUID(dwarf), Type::eEncodingIsUID, |
1825 | &decl, clang_type, Type::eResolveStateFull)); |
1826 | type_sp->SetEncodingType(element_type); |
1827 | } |
1828 | } |
1829 | } break; |
1830 | |
1831 | case DW_TAG_ptr_to_member_type: { |
1832 | DWARFFormValue type_die_form; |
1833 | DWARFFormValue containing_type_die_form; |
1834 | |
1835 | const size_t num_attributes = die.GetAttributes(attributes); |
1836 | |
1837 | if (num_attributes > 0) { |
1838 | uint32_t i; |
1839 | for (i = 0; i < num_attributes; ++i) { |
1840 | attr = attributes.AttributeAtIndex(i); |
1841 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1842 | switch (attr) { |
1843 | case DW_AT_type: |
1844 | type_die_form = form_value; |
1845 | break; |
1846 | case DW_AT_containing_type: |
1847 | containing_type_die_form = form_value; |
1848 | break; |
1849 | } |
1850 | } |
1851 | } |
1852 | |
1853 | Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
1854 | Type *class_type = |
1855 | dwarf->ResolveTypeUID(DIERef(containing_type_die_form)); |
1856 | |
1857 | CompilerType pointee_clang_type = |
1858 | pointee_type->GetForwardCompilerType(); |
1859 | CompilerType class_clang_type = class_type->GetLayoutCompilerType(); |
1860 | |
1861 | clang_type = ClangASTContext::CreateMemberPointerType( |
1862 | class_clang_type, pointee_clang_type); |
1863 | |
1864 | byte_size = clang_type.GetByteSize(nullptr); |
1865 | |
1866 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
1867 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
1868 | Type::eEncodingIsUID, NULL__null, clang_type, |
1869 | Type::eResolveStateForward)); |
1870 | } |
1871 | |
1872 | break; |
1873 | } |
1874 | default: |
1875 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1876 | "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and " |
1877 | "attach the file at the start of this error message", |
1878 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
1879 | break; |
1880 | } |
1881 | |
1882 | if (type_sp.get()) { |
1883 | DWARFDIE sc_parent_die = |
1884 | SymbolFileDWARF::GetParentSymbolContextDIE(die); |
1885 | dw_tag_t sc_parent_tag = sc_parent_die.Tag(); |
1886 | |
1887 | SymbolContextScope *symbol_context_scope = NULL__null; |
1888 | if (sc_parent_tag == DW_TAG_compile_unit || |
1889 | sc_parent_tag == DW_TAG_partial_unit) { |
1890 | symbol_context_scope = sc.comp_unit; |
1891 | } else if (sc.function != NULL__null && sc_parent_die) { |
1892 | symbol_context_scope = |
1893 | sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); |
1894 | if (symbol_context_scope == NULL__null) |
1895 | symbol_context_scope = sc.function; |
1896 | } |
1897 | |
1898 | if (symbol_context_scope != NULL__null) { |
1899 | type_sp->SetSymbolContextScope(symbol_context_scope); |
1900 | } |
1901 | |
1902 | // We are ready to put this type into the uniqued list up at the module |
1903 | // level |
1904 | type_list->Insert(type_sp); |
1905 | |
1906 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
1907 | } |
1908 | } else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1909 | type_sp = type_ptr->shared_from_this(); |
1910 | } |
1911 | } |
1912 | return type_sp; |
1913 | } |
1914 | |
1915 | // DWARF parsing functions |
1916 | |
1917 | class DWARFASTParserClang::DelayedAddObjCClassProperty { |
1918 | public: |
1919 | DelayedAddObjCClassProperty( |
1920 | const CompilerType &class_opaque_type, const char *property_name, |
1921 | const CompilerType &property_opaque_type, // The property type is only |
1922 | // required if you don't have an |
1923 | // ivar decl |
1924 | clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name, |
1925 | const char *property_getter_name, uint32_t property_attributes, |
1926 | const ClangASTMetadata *metadata) |
1927 | : m_class_opaque_type(class_opaque_type), m_property_name(property_name), |
1928 | m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl), |
1929 | m_property_setter_name(property_setter_name), |
1930 | m_property_getter_name(property_getter_name), |
1931 | m_property_attributes(property_attributes) { |
1932 | if (metadata != NULL__null) { |
1933 | m_metadata_ap.reset(new ClangASTMetadata()); |
1934 | *m_metadata_ap = *metadata; |
1935 | } |
1936 | } |
1937 | |
1938 | DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs) { |
1939 | *this = rhs; |
1940 | } |
1941 | |
1942 | DelayedAddObjCClassProperty & |
1943 | operator=(const DelayedAddObjCClassProperty &rhs) { |
1944 | m_class_opaque_type = rhs.m_class_opaque_type; |
1945 | m_property_name = rhs.m_property_name; |
1946 | m_property_opaque_type = rhs.m_property_opaque_type; |
1947 | m_ivar_decl = rhs.m_ivar_decl; |
1948 | m_property_setter_name = rhs.m_property_setter_name; |
1949 | m_property_getter_name = rhs.m_property_getter_name; |
1950 | m_property_attributes = rhs.m_property_attributes; |
1951 | |
1952 | if (rhs.m_metadata_ap.get()) { |
1953 | m_metadata_ap.reset(new ClangASTMetadata()); |
1954 | *m_metadata_ap = *rhs.m_metadata_ap; |
1955 | } |
1956 | return *this; |
1957 | } |
1958 | |
1959 | bool Finalize() { |
1960 | return ClangASTContext::AddObjCClassProperty( |
1961 | m_class_opaque_type, m_property_name, m_property_opaque_type, |
1962 | m_ivar_decl, m_property_setter_name, m_property_getter_name, |
1963 | m_property_attributes, m_metadata_ap.get()); |
1964 | } |
1965 | |
1966 | private: |
1967 | CompilerType m_class_opaque_type; |
1968 | const char *m_property_name; |
1969 | CompilerType m_property_opaque_type; |
1970 | clang::ObjCIvarDecl *m_ivar_decl; |
1971 | const char *m_property_setter_name; |
1972 | const char *m_property_getter_name; |
1973 | uint32_t m_property_attributes; |
1974 | std::unique_ptr<ClangASTMetadata> m_metadata_ap; |
1975 | }; |
1976 | |
1977 | bool DWARFASTParserClang::ParseTemplateDIE( |
1978 | const DWARFDIE &die, |
1979 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
1980 | const dw_tag_t tag = die.Tag(); |
1981 | bool is_template_template_argument = false; |
1982 | |
1983 | switch (tag) { |
1984 | case DW_TAG_GNU_template_parameter_pack: { |
1985 | template_param_infos.packed_args.reset( |
1986 | new ClangASTContext::TemplateParameterInfos); |
1987 | for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid(); |
1988 | child_die = child_die.GetSibling()) { |
1989 | if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args)) |
1990 | return false; |
1991 | } |
1992 | if (const char *name = die.GetName()) { |
1993 | template_param_infos.pack_name = name; |
1994 | } |
1995 | return true; |
1996 | } |
1997 | case DW_TAG_GNU_template_template_param: |
1998 | is_template_template_argument = true; |
1999 | LLVM_FALLTHROUGH[[clang::fallthrough]]; |
2000 | case DW_TAG_template_type_parameter: |
2001 | case DW_TAG_template_value_parameter: { |
2002 | DWARFAttributes attributes; |
2003 | const size_t num_attributes = die.GetAttributes(attributes); |
2004 | const char *name = nullptr; |
2005 | const char *template_name = nullptr; |
2006 | CompilerType clang_type; |
2007 | uint64_t uval64 = 0; |
2008 | bool uval64_valid = false; |
2009 | if (num_attributes > 0) { |
2010 | DWARFFormValue form_value; |
2011 | for (size_t i = 0; i < num_attributes; ++i) { |
2012 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2013 | |
2014 | switch (attr) { |
2015 | case DW_AT_name: |
2016 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2017 | name = form_value.AsCString(); |
2018 | break; |
2019 | |
2020 | case DW_AT_GNU_template_name: |
2021 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2022 | template_name = form_value.AsCString(); |
2023 | break; |
2024 | |
2025 | case DW_AT_type: |
2026 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2027 | Type *lldb_type = die.ResolveTypeUID(DIERef(form_value)); |
2028 | if (lldb_type) |
2029 | clang_type = lldb_type->GetForwardCompilerType(); |
2030 | } |
2031 | break; |
2032 | |
2033 | case DW_AT_const_value: |
2034 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2035 | uval64_valid = true; |
2036 | uval64 = form_value.Unsigned(); |
2037 | } |
2038 | break; |
2039 | default: |
2040 | break; |
2041 | } |
2042 | } |
2043 | |
2044 | clang::ASTContext *ast = m_ast.getASTContext(); |
2045 | if (!clang_type) |
2046 | clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
2047 | |
2048 | if (!is_template_template_argument) { |
2049 | bool is_signed = false; |
2050 | if (name && name[0]) |
2051 | template_param_infos.names.push_back(name); |
2052 | else |
2053 | template_param_infos.names.push_back(NULL__null); |
2054 | |
2055 | // Get the signed value for any integer or enumeration if available |
2056 | clang_type.IsIntegerOrEnumerationType(is_signed); |
2057 | |
2058 | if (tag == DW_TAG_template_value_parameter && uval64_valid) { |
2059 | llvm::APInt apint(clang_type.GetBitSize(nullptr), uval64, is_signed); |
2060 | template_param_infos.args.push_back( |
2061 | clang::TemplateArgument(*ast, llvm::APSInt(apint, !is_signed), |
2062 | ClangUtil::GetQualType(clang_type))); |
2063 | } else { |
2064 | template_param_infos.args.push_back( |
2065 | clang::TemplateArgument(ClangUtil::GetQualType(clang_type))); |
2066 | } |
2067 | } else { |
2068 | auto *tplt_type = m_ast.CreateTemplateTemplateParmDecl(template_name); |
2069 | template_param_infos.names.push_back(name); |
2070 | template_param_infos.args.push_back( |
2071 | clang::TemplateArgument(clang::TemplateName(tplt_type))); |
2072 | } |
2073 | } |
2074 | } |
2075 | return true; |
2076 | |
2077 | default: |
2078 | break; |
2079 | } |
2080 | return false; |
2081 | } |
2082 | |
2083 | bool DWARFASTParserClang::ParseTemplateParameterInfos( |
2084 | const DWARFDIE &parent_die, |
2085 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
2086 | |
2087 | if (!parent_die) |
2088 | return false; |
2089 | |
2090 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2091 | die = die.GetSibling()) { |
2092 | const dw_tag_t tag = die.Tag(); |
2093 | |
2094 | switch (tag) { |
2095 | case DW_TAG_template_type_parameter: |
2096 | case DW_TAG_template_value_parameter: |
2097 | case DW_TAG_GNU_template_parameter_pack: |
2098 | case DW_TAG_GNU_template_template_param: |
2099 | ParseTemplateDIE(die, template_param_infos); |
2100 | break; |
2101 | |
2102 | default: |
2103 | break; |
2104 | } |
2105 | } |
2106 | if (template_param_infos.args.empty()) |
2107 | return false; |
2108 | return template_param_infos.args.size() == template_param_infos.names.size(); |
2109 | } |
2110 | |
2111 | // Checks whether m1 is an overload of m2 (as opposed to an override). This is |
2112 | // called by addOverridesForMethod to distinguish overrides (which share a |
2113 | // vtable entry) from overloads (which require distinct entries). |
2114 | static bool isOverload(clang::CXXMethodDecl *m1, clang::CXXMethodDecl *m2) { |
2115 | // FIXME: This should detect covariant return types, but currently doesn't. |
2116 | lldbassert(&m1->getASTContext() == &m2->getASTContext() &&lldb_private::lldb_assert(&m1->getASTContext() == & m2->getASTContext() && "Methods should have the same AST context" , "&m1->getASTContext() == &m2->getASTContext() && \"Methods should have the same AST context\"" , __FUNCTION__, "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2117) |
2117 | "Methods should have the same AST context")lldb_private::lldb_assert(&m1->getASTContext() == & m2->getASTContext() && "Methods should have the same AST context" , "&m1->getASTContext() == &m2->getASTContext() && \"Methods should have the same AST context\"" , __FUNCTION__, "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2117); |
2118 | clang::ASTContext &context = m1->getASTContext(); |
2119 | |
2120 | const auto *m1Type = |
2121 | llvm::cast<clang::FunctionProtoType>( |
2122 | context.getCanonicalType(m1->getType())); |
2123 | |
2124 | const auto *m2Type = |
2125 | llvm::cast<clang::FunctionProtoType>( |
2126 | context.getCanonicalType(m2->getType())); |
2127 | |
2128 | auto compareArgTypes = |
2129 | [&context](const clang::QualType &m1p, const clang::QualType &m2p) { |
2130 | return context.hasSameType(m1p.getUnqualifiedType(), |
2131 | m2p.getUnqualifiedType()); |
2132 | }; |
2133 | |
2134 | // FIXME: In C++14 and later, we can just pass m2Type->param_type_end() |
2135 | // as a fourth parameter to std::equal(). |
2136 | return (m1->getNumParams() != m2->getNumParams()) || |
2137 | !std::equal(m1Type->param_type_begin(), m1Type->param_type_end(), |
2138 | m2Type->param_type_begin(), compareArgTypes); |
2139 | } |
2140 | |
2141 | // If decl is a virtual method, walk the base classes looking for methods that |
2142 | // decl overrides. This table of overridden methods is used by IRGen to |
2143 | // determine the vtable layout for decl's parent class. |
2144 | static void addOverridesForMethod(clang::CXXMethodDecl *decl) { |
2145 | if (!decl->isVirtual()) |
2146 | return; |
2147 | |
2148 | clang::CXXBasePaths paths; |
2149 | |
2150 | auto find_overridden_methods = |
2151 | [decl](const clang::CXXBaseSpecifier *specifier, clang::CXXBasePath &path) { |
2152 | if (auto *base_record = |
2153 | llvm::dyn_cast<clang::CXXRecordDecl>( |
2154 | specifier->getType()->getAs<clang::RecordType>()->getDecl())) { |
2155 | |
2156 | clang::DeclarationName name = decl->getDeclName(); |
2157 | |
2158 | // If this is a destructor, check whether the base class destructor is |
2159 | // virtual. |
2160 | if (name.getNameKind() == clang::DeclarationName::CXXDestructorName) |
2161 | if (auto *baseDtorDecl = base_record->getDestructor()) { |
2162 | if (baseDtorDecl->isVirtual()) { |
2163 | path.Decls = baseDtorDecl; |
2164 | return true; |
2165 | } else |
2166 | return false; |
2167 | } |
2168 | |
2169 | // Otherwise, search for name in the base class. |
2170 | for (path.Decls = base_record->lookup(name); !path.Decls.empty(); |
2171 | path.Decls = path.Decls.slice(1)) { |
2172 | if (auto *method_decl = |
2173 | llvm::dyn_cast<clang::CXXMethodDecl>(path.Decls.front())) |
2174 | if (method_decl->isVirtual() && !isOverload(decl, method_decl)) { |
2175 | path.Decls = method_decl; |
2176 | return true; |
2177 | } |
2178 | } |
2179 | } |
2180 | |
2181 | return false; |
2182 | }; |
2183 | |
2184 | if (decl->getParent()->lookupInBases(find_overridden_methods, paths)) { |
2185 | for (auto *overridden_decl : paths.found_decls()) |
2186 | decl->addOverriddenMethod( |
2187 | llvm::cast<clang::CXXMethodDecl>(overridden_decl)); |
2188 | } |
2189 | } |
2190 | |
2191 | // If clang_type is a CXXRecordDecl, builds the method override list for each |
2192 | // of its virtual methods. |
2193 | static void addMethodOverrides(ClangASTContext &ast, CompilerType &clang_type) { |
2194 | if (auto *record = |
2195 | ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType())) |
2196 | for (auto *method : record->methods()) |
2197 | addOverridesForMethod(method); |
2198 | } |
2199 | |
2200 | bool DWARFASTParserClang::CompleteTypeFromDWARF(const DWARFDIE &die, |
2201 | lldb_private::Type *type, |
2202 | CompilerType &clang_type) { |
2203 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
2204 | |
2205 | std::lock_guard<std::recursive_mutex> guard( |
2206 | dwarf->GetObjectFile()->GetModule()->GetMutex()); |
2207 | |
2208 | // Disable external storage for this type so we don't get anymore |
2209 | // clang::ExternalASTSource queries for this type. |
2210 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false); |
2211 | |
2212 | if (!die) |
2213 | return false; |
2214 | |
2215 | #if defined LLDB_CONFIGURATION_DEBUG |
2216 | //---------------------------------------------------------------------- |
2217 | // For debugging purposes, the LLDB_DWARF_DONT_COMPLETE_TYPENAMES environment |
2218 | // variable can be set with one or more typenames separated by ';' |
2219 | // characters. This will cause this function to not complete any types whose |
2220 | // names match. |
2221 | // |
2222 | // Examples of setting this environment variable: |
2223 | // |
2224 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo |
2225 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo;Bar;Baz |
2226 | //---------------------------------------------------------------------- |
2227 | const char *dont_complete_typenames_cstr = |
2228 | getenv("LLDB_DWARF_DONT_COMPLETE_TYPENAMES"); |
2229 | if (dont_complete_typenames_cstr && dont_complete_typenames_cstr[0]) { |
2230 | const char *die_name = die.GetName(); |
2231 | if (die_name && die_name[0]) { |
2232 | const char *match = strstr(dont_complete_typenames_cstr, die_name); |
2233 | if (match) { |
2234 | size_t die_name_length = strlen(die_name); |
2235 | while (match) { |
2236 | const char separator_char = ';'; |
2237 | const char next_char = match[die_name_length]; |
2238 | if (next_char == '\0' || next_char == separator_char) { |
2239 | if (match == dont_complete_typenames_cstr || |
2240 | match[-1] == separator_char) |
2241 | return false; |
2242 | } |
2243 | match = strstr(match + 1, die_name); |
2244 | } |
2245 | } |
2246 | } |
2247 | } |
2248 | #endif |
2249 | |
2250 | const dw_tag_t tag = die.Tag(); |
2251 | |
2252 | Log *log = |
2253 | nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); |
2254 | if (log) |
2255 | dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( |
2256 | log, "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...", |
2257 | die.GetID(), die.GetTagAsCString(), type->GetName().AsCString()); |
2258 | assert(clang_type)(static_cast <bool> (clang_type) ? void (0) : __assert_fail ("clang_type", "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2258, __extension__ __PRETTY_FUNCTION__)); |
2259 | DWARFAttributes attributes; |
2260 | switch (tag) { |
2261 | case DW_TAG_structure_type: |
2262 | case DW_TAG_union_type: |
2263 | case DW_TAG_class_type: { |
2264 | ClangASTImporter::LayoutInfo layout_info; |
2265 | |
2266 | { |
2267 | if (die.HasChildren()) { |
2268 | LanguageType class_language = eLanguageTypeUnknown; |
2269 | if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) { |
2270 | class_language = eLanguageTypeObjC; |
2271 | // For objective C we don't start the definition when the class is |
2272 | // created. |
2273 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
2274 | } |
2275 | |
2276 | int tag_decl_kind = -1; |
2277 | AccessType default_accessibility = eAccessNone; |
2278 | if (tag == DW_TAG_structure_type) { |
2279 | tag_decl_kind = clang::TTK_Struct; |
2280 | default_accessibility = eAccessPublic; |
2281 | } else if (tag == DW_TAG_union_type) { |
2282 | tag_decl_kind = clang::TTK_Union; |
2283 | default_accessibility = eAccessPublic; |
2284 | } else if (tag == DW_TAG_class_type) { |
2285 | tag_decl_kind = clang::TTK_Class; |
2286 | default_accessibility = eAccessPrivate; |
2287 | } |
2288 | |
2289 | SymbolContext sc(die.GetLLDBCompileUnit()); |
2290 | std::vector<clang::CXXBaseSpecifier *> base_classes; |
2291 | std::vector<int> member_accessibilities; |
2292 | bool is_a_class = false; |
2293 | // Parse members and base classes first |
2294 | DWARFDIECollection member_function_dies; |
2295 | |
2296 | DelayedPropertyList delayed_properties; |
2297 | ParseChildMembers(sc, die, clang_type, class_language, base_classes, |
2298 | member_accessibilities, member_function_dies, |
2299 | delayed_properties, default_accessibility, is_a_class, |
2300 | layout_info); |
2301 | |
2302 | // Now parse any methods if there were any... |
2303 | size_t num_functions = member_function_dies.Size(); |
2304 | if (num_functions > 0) { |
2305 | for (size_t i = 0; i < num_functions; ++i) { |
2306 | dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i)); |
2307 | } |
2308 | } |
2309 | |
2310 | if (class_language == eLanguageTypeObjC) { |
2311 | ConstString class_name(clang_type.GetTypeName()); |
2312 | if (class_name) { |
2313 | DIEArray method_die_offsets; |
2314 | dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); |
2315 | |
2316 | if (!method_die_offsets.empty()) { |
2317 | DWARFDebugInfo *debug_info = dwarf->DebugInfo(); |
2318 | |
2319 | const size_t num_matches = method_die_offsets.size(); |
2320 | for (size_t i = 0; i < num_matches; ++i) { |
2321 | const DIERef &die_ref = method_die_offsets[i]; |
2322 | DWARFDIE method_die = debug_info->GetDIE(die_ref); |
2323 | |
2324 | if (method_die) |
2325 | method_die.ResolveType(); |
2326 | } |
2327 | } |
2328 | |
2329 | for (DelayedPropertyList::iterator pi = delayed_properties.begin(), |
2330 | pe = delayed_properties.end(); |
2331 | pi != pe; ++pi) |
2332 | pi->Finalize(); |
2333 | } |
2334 | } |
2335 | |
2336 | // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we |
2337 | // need to tell the clang type it is actually a class. |
2338 | if (class_language != eLanguageTypeObjC) { |
2339 | if (is_a_class && tag_decl_kind != clang::TTK_Class) |
2340 | m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type), |
2341 | clang::TTK_Class); |
2342 | } |
2343 | |
2344 | // Since DW_TAG_structure_type gets used for both classes and |
2345 | // structures, we may need to set any DW_TAG_member fields to have a |
2346 | // "private" access if none was specified. When we parsed the child |
2347 | // members we tracked that actual accessibility value for each |
2348 | // DW_TAG_member in the "member_accessibilities" array. If the value |
2349 | // for the member is zero, then it was set to the |
2350 | // "default_accessibility" which for structs was "public". Below we |
2351 | // correct this by setting any fields to "private" that weren't |
2352 | // correctly set. |
2353 | if (is_a_class && !member_accessibilities.empty()) { |
2354 | // This is a class and all members that didn't have their access |
2355 | // specified are private. |
2356 | m_ast.SetDefaultAccessForRecordFields( |
2357 | m_ast.GetAsRecordDecl(clang_type), eAccessPrivate, |
2358 | &member_accessibilities.front(), member_accessibilities.size()); |
2359 | } |
2360 | |
2361 | if (!base_classes.empty()) { |
2362 | // Make sure all base classes refer to complete types and not forward |
2363 | // declarations. If we don't do this, clang will crash with an |
2364 | // assertion in the call to clang_type.SetBaseClassesForClassType() |
2365 | for (auto &base_class : base_classes) { |
2366 | clang::TypeSourceInfo *type_source_info = |
2367 | base_class->getTypeSourceInfo(); |
2368 | if (type_source_info) { |
2369 | CompilerType base_class_type( |
2370 | &m_ast, type_source_info->getType().getAsOpaquePtr()); |
2371 | if (base_class_type.GetCompleteType() == false) { |
2372 | auto module = dwarf->GetObjectFile()->GetModule(); |
2373 | module->ReportError(":: Class '%s' has a base class '%s' which " |
2374 | "does not have a complete definition.", |
2375 | die.GetName(), |
2376 | base_class_type.GetTypeName().GetCString()); |
2377 | if (die.GetCU()->GetProducer() == eProducerClang) |
2378 | module->ReportError(":: Try compiling the source file with " |
2379 | "-fstandalone-debug."); |
2380 | |
2381 | // We have no choice other than to pretend that the base class |
2382 | // is complete. If we don't do this, clang will crash when we |
2383 | // call setBases() inside of |
2384 | // "clang_type.SetBaseClassesForClassType()" below. Since we |
2385 | // provide layout assistance, all ivars in this class and other |
2386 | // classes will be fine, this is the best we can do short of |
2387 | // crashing. |
2388 | if (ClangASTContext::StartTagDeclarationDefinition( |
2389 | base_class_type)) { |
2390 | ClangASTContext::CompleteTagDeclarationDefinition( |
2391 | base_class_type); |
2392 | } |
2393 | } |
2394 | } |
2395 | } |
2396 | m_ast.SetBaseClassesForClassType(clang_type.GetOpaqueQualType(), |
2397 | &base_classes.front(), |
2398 | base_classes.size()); |
2399 | |
2400 | // Clang will copy each CXXBaseSpecifier in "base_classes" so we have |
2401 | // to free them all. |
2402 | ClangASTContext::DeleteBaseClassSpecifiers(&base_classes.front(), |
2403 | base_classes.size()); |
2404 | } |
2405 | } |
2406 | } |
2407 | |
2408 | addMethodOverrides(m_ast, clang_type); |
2409 | ClangASTContext::BuildIndirectFields(clang_type); |
2410 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
2411 | |
2412 | if (!layout_info.field_offsets.empty() || |
2413 | !layout_info.base_offsets.empty() || |
2414 | !layout_info.vbase_offsets.empty()) { |
2415 | if (type) |
2416 | layout_info.bit_size = type->GetByteSize() * 8; |
2417 | if (layout_info.bit_size == 0) |
2418 | layout_info.bit_size = |
2419 | die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; |
2420 | |
2421 | clang::CXXRecordDecl *record_decl = |
2422 | m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); |
2423 | if (record_decl) { |
2424 | if (log) { |
2425 | ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); |
2426 | |
2427 | if (module_sp) { |
2428 | module_sp->LogMessage( |
2429 | log, |
2430 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) " |
2431 | "caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u" |
2432 | ", alignment = %" PRIu64"l" "u" |
2433 | ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", |
2434 | static_cast<void *>(clang_type.GetOpaqueQualType()), |
2435 | static_cast<void *>(record_decl), layout_info.bit_size, |
2436 | layout_info.alignment, |
2437 | static_cast<uint32_t>(layout_info.field_offsets.size()), |
2438 | static_cast<uint32_t>(layout_info.base_offsets.size()), |
2439 | static_cast<uint32_t>(layout_info.vbase_offsets.size())); |
2440 | |
2441 | uint32_t idx; |
2442 | { |
2443 | llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator |
2444 | pos, |
2445 | end = layout_info.field_offsets.end(); |
2446 | for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; |
2447 | ++pos, ++idx) { |
2448 | module_sp->LogMessage( |
2449 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2450 | "%p) field[%u] = { bit_offset=%u, name='%s' }", |
2451 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
2452 | static_cast<uint32_t>(pos->second), |
2453 | pos->first->getNameAsString().c_str()); |
2454 | } |
2455 | } |
2456 | |
2457 | { |
2458 | llvm::DenseMap<const clang::CXXRecordDecl *, |
2459 | clang::CharUnits>::const_iterator base_pos, |
2460 | base_end = layout_info.base_offsets.end(); |
2461 | for (idx = 0, base_pos = layout_info.base_offsets.begin(); |
2462 | base_pos != base_end; ++base_pos, ++idx) { |
2463 | module_sp->LogMessage( |
2464 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2465 | "%p) base[%u] = { byte_offset=%u, name='%s' }", |
2466 | clang_type.GetOpaqueQualType(), idx, |
2467 | (uint32_t)base_pos->second.getQuantity(), |
2468 | base_pos->first->getNameAsString().c_str()); |
2469 | } |
2470 | } |
2471 | { |
2472 | llvm::DenseMap<const clang::CXXRecordDecl *, |
2473 | clang::CharUnits>::const_iterator vbase_pos, |
2474 | vbase_end = layout_info.vbase_offsets.end(); |
2475 | for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); |
2476 | vbase_pos != vbase_end; ++vbase_pos, ++idx) { |
2477 | module_sp->LogMessage( |
2478 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2479 | "%p) vbase[%u] = { byte_offset=%u, name='%s' }", |
2480 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
2481 | static_cast<uint32_t>(vbase_pos->second.getQuantity()), |
2482 | vbase_pos->first->getNameAsString().c_str()); |
2483 | } |
2484 | } |
2485 | } |
2486 | } |
2487 | GetClangASTImporter().InsertRecordDecl(record_decl, layout_info); |
2488 | } |
2489 | } |
2490 | } |
2491 | |
2492 | return (bool)clang_type; |
2493 | |
2494 | case DW_TAG_enumeration_type: |
2495 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
2496 | if (die.HasChildren()) { |
2497 | SymbolContext sc(die.GetLLDBCompileUnit()); |
2498 | bool is_signed = false; |
2499 | clang_type.IsIntegerType(is_signed); |
2500 | ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), |
2501 | die); |
2502 | } |
2503 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
2504 | } |
2505 | return (bool)clang_type; |
2506 | |
2507 | default: |
2508 | assert(false && "not a forward clang type decl!")(static_cast <bool> (false && "not a forward clang type decl!" ) ? void (0) : __assert_fail ("false && \"not a forward clang type decl!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2508, __extension__ __PRETTY_FUNCTION__)); |
2509 | break; |
2510 | } |
2511 | |
2512 | return false; |
2513 | } |
2514 | |
2515 | std::vector<DWARFDIE> DWARFASTParserClang::GetDIEForDeclContext( |
2516 | lldb_private::CompilerDeclContext decl_context) { |
2517 | std::vector<DWARFDIE> result; |
2518 | for (auto it = m_decl_ctx_to_die.find( |
2519 | (clang::DeclContext *)decl_context.GetOpaqueDeclContext()); |
2520 | it != m_decl_ctx_to_die.end(); it++) |
2521 | result.push_back(it->second); |
2522 | return result; |
2523 | } |
2524 | |
2525 | CompilerDecl DWARFASTParserClang::GetDeclForUIDFromDWARF(const DWARFDIE &die) { |
2526 | clang::Decl *clang_decl = GetClangDeclForDIE(die); |
2527 | if (clang_decl != nullptr) |
2528 | return CompilerDecl(&m_ast, clang_decl); |
2529 | return CompilerDecl(); |
2530 | } |
2531 | |
2532 | CompilerDeclContext |
2533 | DWARFASTParserClang::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) { |
2534 | clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die); |
2535 | if (clang_decl_ctx) |
2536 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2537 | return CompilerDeclContext(); |
2538 | } |
2539 | |
2540 | CompilerDeclContext |
2541 | DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) { |
2542 | clang::DeclContext *clang_decl_ctx = |
2543 | GetClangDeclContextContainingDIE(die, nullptr); |
2544 | if (clang_decl_ctx) |
2545 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2546 | return CompilerDeclContext(); |
2547 | } |
2548 | |
2549 | size_t DWARFASTParserClang::ParseChildEnumerators( |
2550 | const SymbolContext &sc, lldb_private::CompilerType &clang_type, |
2551 | bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die) { |
2552 | if (!parent_die) |
2553 | return 0; |
2554 | |
2555 | size_t enumerators_added = 0; |
2556 | |
2557 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2558 | die = die.GetSibling()) { |
2559 | const dw_tag_t tag = die.Tag(); |
2560 | if (tag == DW_TAG_enumerator) { |
2561 | DWARFAttributes attributes; |
2562 | const size_t num_child_attributes = die.GetAttributes(attributes); |
2563 | if (num_child_attributes > 0) { |
2564 | const char *name = NULL__null; |
2565 | bool got_value = false; |
2566 | int64_t enum_value = 0; |
2567 | Declaration decl; |
2568 | |
2569 | uint32_t i; |
2570 | for (i = 0; i < num_child_attributes; ++i) { |
2571 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2572 | DWARFFormValue form_value; |
2573 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2574 | switch (attr) { |
2575 | case DW_AT_const_value: |
2576 | got_value = true; |
2577 | if (is_signed) |
2578 | enum_value = form_value.Signed(); |
2579 | else |
2580 | enum_value = form_value.Unsigned(); |
2581 | break; |
2582 | |
2583 | case DW_AT_name: |
2584 | name = form_value.AsCString(); |
2585 | break; |
2586 | |
2587 | case DW_AT_description: |
2588 | default: |
2589 | case DW_AT_decl_file: |
2590 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
2591 | form_value.Unsigned())); |
2592 | break; |
2593 | case DW_AT_decl_line: |
2594 | decl.SetLine(form_value.Unsigned()); |
2595 | break; |
2596 | case DW_AT_decl_column: |
2597 | decl.SetColumn(form_value.Unsigned()); |
2598 | break; |
2599 | case DW_AT_sibling: |
2600 | break; |
2601 | } |
2602 | } |
2603 | } |
2604 | |
2605 | if (name && name[0] && got_value) { |
2606 | m_ast.AddEnumerationValueToEnumerationType( |
2607 | clang_type.GetOpaqueQualType(), |
2608 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), |
2609 | decl, name, enum_value, enumerator_byte_size * 8); |
2610 | ++enumerators_added; |
2611 | } |
2612 | } |
2613 | } |
2614 | } |
2615 | return enumerators_added; |
2616 | } |
2617 | |
2618 | #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE1) |
2619 | |
2620 | class DIEStack { |
2621 | public: |
2622 | void Push(const DWARFDIE &die) { m_dies.push_back(die); } |
2623 | |
2624 | void LogDIEs(Log *log) { |
2625 | StreamString log_strm; |
2626 | const size_t n = m_dies.size(); |
2627 | log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n); |
2628 | for (size_t i = 0; i < n; i++) { |
2629 | std::string qualified_name; |
2630 | const DWARFDIE &die = m_dies[i]; |
2631 | die.GetQualifiedName(qualified_name); |
2632 | log_strm.Printf("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n", (uint64_t)i, |
2633 | die.GetOffset(), die.GetTagAsCString(), |
2634 | qualified_name.c_str()); |
2635 | } |
2636 | log->PutCString(log_strm.GetData()); |
2637 | } |
2638 | void Pop() { m_dies.pop_back(); } |
2639 | |
2640 | class ScopedPopper { |
2641 | public: |
2642 | ScopedPopper(DIEStack &die_stack) |
2643 | : m_die_stack(die_stack), m_valid(false) {} |
2644 | |
2645 | void Push(const DWARFDIE &die) { |
2646 | m_valid = true; |
2647 | m_die_stack.Push(die); |
2648 | } |
2649 | |
2650 | ~ScopedPopper() { |
2651 | if (m_valid) |
2652 | m_die_stack.Pop(); |
2653 | } |
2654 | |
2655 | protected: |
2656 | DIEStack &m_die_stack; |
2657 | bool m_valid; |
2658 | }; |
2659 | |
2660 | protected: |
2661 | typedef std::vector<DWARFDIE> Stack; |
2662 | Stack m_dies; |
2663 | }; |
2664 | #endif |
2665 | |
2666 | Function *DWARFASTParserClang::ParseFunctionFromDWARF(const SymbolContext &sc, |
2667 | const DWARFDIE &die) { |
2668 | DWARFRangeList func_ranges; |
2669 | const char *name = NULL__null; |
2670 | const char *mangled = NULL__null; |
2671 | int decl_file = 0; |
2672 | int decl_line = 0; |
2673 | int decl_column = 0; |
2674 | int call_file = 0; |
2675 | int call_line = 0; |
2676 | int call_column = 0; |
2677 | DWARFExpression frame_base(die.GetCU()); |
2678 | |
2679 | const dw_tag_t tag = die.Tag(); |
2680 | |
2681 | if (tag != DW_TAG_subprogram) |
2682 | return NULL__null; |
2683 | |
2684 | if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line, |
2685 | decl_column, call_file, call_line, call_column, |
2686 | &frame_base)) { |
2687 | |
2688 | // Union of all ranges in the function DIE (if the function is |
2689 | // discontiguous) |
2690 | AddressRange func_range; |
2691 | lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0); |
2692 | lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0); |
2693 | if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) && |
2694 | lowest_func_addr <= highest_func_addr) { |
2695 | ModuleSP module_sp(die.GetModule()); |
2696 | func_range.GetBaseAddress().ResolveAddressUsingFileSections( |
2697 | lowest_func_addr, module_sp->GetSectionList()); |
2698 | if (func_range.GetBaseAddress().IsValid()) |
2699 | func_range.SetByteSize(highest_func_addr - lowest_func_addr); |
2700 | } |
2701 | |
2702 | if (func_range.GetBaseAddress().IsValid()) { |
2703 | Mangled func_name; |
2704 | if (mangled) |
2705 | func_name.SetValue(ConstString(mangled), true); |
2706 | else if ((die.GetParent().Tag() == DW_TAG_compile_unit || |
2707 | die.GetParent().Tag() == DW_TAG_partial_unit) && |
2708 | Language::LanguageIsCPlusPlus(die.GetLanguage()) && name && |
2709 | strcmp(name, "main") != 0) { |
2710 | // If the mangled name is not present in the DWARF, generate the |
2711 | // demangled name using the decl context. We skip if the function is |
2712 | // "main" as its name is never mangled. |
2713 | bool is_static = false; |
2714 | bool is_variadic = false; |
2715 | bool has_template_params = false; |
2716 | unsigned type_quals = 0; |
2717 | std::vector<CompilerType> param_types; |
2718 | std::vector<clang::ParmVarDecl *> param_decls; |
2719 | DWARFDeclContext decl_ctx; |
2720 | StreamString sstr; |
2721 | |
2722 | die.GetDWARFDeclContext(decl_ctx); |
2723 | sstr << decl_ctx.GetQualifiedName(); |
2724 | |
2725 | clang::DeclContext *containing_decl_ctx = |
2726 | GetClangDeclContextContainingDIE(die, nullptr); |
2727 | ParseChildParameters(sc, containing_decl_ctx, die, true, is_static, |
2728 | is_variadic, has_template_params, param_types, |
2729 | param_decls, type_quals); |
2730 | sstr << "("; |
2731 | for (size_t i = 0; i < param_types.size(); i++) { |
2732 | if (i > 0) |
2733 | sstr << ", "; |
2734 | sstr << param_types[i].GetTypeName(); |
2735 | } |
2736 | if (is_variadic) |
2737 | sstr << ", ..."; |
2738 | sstr << ")"; |
2739 | if (type_quals & clang::Qualifiers::Const) |
2740 | sstr << " const"; |
2741 | |
2742 | func_name.SetValue(ConstString(sstr.GetString()), false); |
2743 | } else |
2744 | func_name.SetValue(ConstString(name), false); |
2745 | |
2746 | FunctionSP func_sp; |
2747 | std::unique_ptr<Declaration> decl_ap; |
2748 | if (decl_file != 0 || decl_line != 0 || decl_column != 0) |
2749 | decl_ap.reset(new Declaration( |
2750 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), |
2751 | decl_line, decl_column)); |
2752 | |
2753 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
2754 | // Supply the type _only_ if it has already been parsed |
2755 | Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE()); |
2756 | |
2757 | assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED)(static_cast <bool> (func_type == __null || func_type != ((lldb_private::Type *)1)) ? void (0) : __assert_fail ("func_type == NULL || func_type != DIE_IS_BEING_PARSED" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2757, __extension__ __PRETTY_FUNCTION__)); |
2758 | |
2759 | if (dwarf->FixupAddress(func_range.GetBaseAddress())) { |
2760 | const user_id_t func_user_id = die.GetID(); |
2761 | func_sp.reset(new Function(sc.comp_unit, |
2762 | func_user_id, // UserID is the DIE offset |
2763 | func_user_id, func_name, func_type, |
2764 | func_range)); // first address range |
2765 | |
2766 | if (func_sp.get() != NULL__null) { |
2767 | if (frame_base.IsValid()) |
2768 | func_sp->GetFrameBaseExpression() = frame_base; |
2769 | sc.comp_unit->AddFunction(func_sp); |
2770 | return func_sp.get(); |
2771 | } |
2772 | } |
2773 | } |
2774 | } |
2775 | return NULL__null; |
2776 | } |
2777 | |
2778 | bool DWARFASTParserClang::ParseChildMembers( |
2779 | const SymbolContext &sc, const DWARFDIE &parent_die, |
2780 | CompilerType &class_clang_type, const LanguageType class_language, |
2781 | std::vector<clang::CXXBaseSpecifier *> &base_classes, |
2782 | std::vector<int> &member_accessibilities, |
2783 | DWARFDIECollection &member_function_dies, |
2784 | DelayedPropertyList &delayed_properties, AccessType &default_accessibility, |
2785 | bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) { |
2786 | if (!parent_die) |
2787 | return 0; |
2788 | |
2789 | // Get the parent byte size so we can verify any members will fit |
2790 | const uint64_t parent_byte_size = |
2791 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX(18446744073709551615UL)); |
2792 | const uint64_t parent_bit_size = |
2793 | parent_byte_size == UINT64_MAX(18446744073709551615UL) ? UINT64_MAX(18446744073709551615UL) : parent_byte_size * 8; |
2794 | |
2795 | uint32_t member_idx = 0; |
2796 | BitfieldInfo last_field_info; |
2797 | |
2798 | ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); |
2799 | ClangASTContext *ast = |
2800 | llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem()); |
2801 | if (ast == nullptr) |
2802 | return 0; |
2803 | |
2804 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2805 | die = die.GetSibling()) { |
2806 | dw_tag_t tag = die.Tag(); |
2807 | |
2808 | switch (tag) { |
2809 | case DW_TAG_member: |
2810 | case DW_TAG_APPLE_property: { |
2811 | DWARFAttributes attributes; |
2812 | const size_t num_attributes = die.GetAttributes(attributes); |
2813 | if (num_attributes > 0) { |
2814 | Declaration decl; |
2815 | // DWARFExpression location; |
2816 | const char *name = NULL__null; |
2817 | const char *prop_name = NULL__null; |
2818 | const char *prop_getter_name = NULL__null; |
2819 | const char *prop_setter_name = NULL__null; |
2820 | uint32_t prop_attributes = 0; |
2821 | |
2822 | bool is_artificial = false; |
2823 | DWARFFormValue encoding_form; |
2824 | AccessType accessibility = eAccessNone; |
2825 | uint32_t member_byte_offset = |
2826 | (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX(4294967295U); |
2827 | size_t byte_size = 0; |
2828 | int64_t bit_offset = 0; |
2829 | uint64_t data_bit_offset = UINT64_MAX(18446744073709551615UL); |
2830 | size_t bit_size = 0; |
2831 | bool is_external = |
2832 | false; // On DW_TAG_members, this means the member is static |
2833 | uint32_t i; |
2834 | for (i = 0; i < num_attributes && !is_artificial; ++i) { |
2835 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2836 | DWARFFormValue form_value; |
2837 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2838 | switch (attr) { |
2839 | case DW_AT_decl_file: |
2840 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
2841 | form_value.Unsigned())); |
2842 | break; |
2843 | case DW_AT_decl_line: |
2844 | decl.SetLine(form_value.Unsigned()); |
2845 | break; |
2846 | case DW_AT_decl_column: |
2847 | decl.SetColumn(form_value.Unsigned()); |
2848 | break; |
2849 | case DW_AT_name: |
2850 | name = form_value.AsCString(); |
2851 | break; |
2852 | case DW_AT_type: |
2853 | encoding_form = form_value; |
2854 | break; |
2855 | case DW_AT_bit_offset: |
2856 | bit_offset = form_value.Signed(); |
2857 | break; |
2858 | case DW_AT_bit_size: |
2859 | bit_size = form_value.Unsigned(); |
2860 | break; |
2861 | case DW_AT_byte_size: |
2862 | byte_size = form_value.Unsigned(); |
2863 | break; |
2864 | case DW_AT_data_bit_offset: |
2865 | data_bit_offset = form_value.Unsigned(); |
2866 | break; |
2867 | case DW_AT_data_member_location: |
2868 | if (form_value.BlockData()) { |
2869 | Value initialValue(0); |
2870 | Value memberOffset(0); |
2871 | const DWARFDataExtractor &debug_info_data = die.GetData(); |
2872 | uint32_t block_length = form_value.Unsigned(); |
2873 | uint32_t block_offset = |
2874 | form_value.BlockData() - debug_info_data.GetDataStart(); |
2875 | if (DWARFExpression::Evaluate( |
2876 | nullptr, // ExecutionContext * |
2877 | nullptr, // RegisterContext * |
2878 | module_sp, debug_info_data, die.GetCU(), block_offset, |
2879 | block_length, eRegisterKindDWARF, &initialValue, |
2880 | nullptr, memberOffset, nullptr)) { |
2881 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
2882 | } |
2883 | } else { |
2884 | // With DWARF 3 and later, if the value is an integer constant, |
2885 | // this form value is the offset in bytes from the beginning of |
2886 | // the containing entity. |
2887 | member_byte_offset = form_value.Unsigned(); |
2888 | } |
2889 | break; |
2890 | |
2891 | case DW_AT_accessibility: |
2892 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
2893 | break; |
2894 | case DW_AT_artificial: |
2895 | is_artificial = form_value.Boolean(); |
2896 | break; |
2897 | case DW_AT_APPLE_property_name: |
2898 | prop_name = form_value.AsCString(); |
2899 | break; |
2900 | case DW_AT_APPLE_property_getter: |
2901 | prop_getter_name = form_value.AsCString(); |
2902 | break; |
2903 | case DW_AT_APPLE_property_setter: |
2904 | prop_setter_name = form_value.AsCString(); |
2905 | break; |
2906 | case DW_AT_APPLE_property_attribute: |
2907 | prop_attributes = form_value.Unsigned(); |
2908 | break; |
2909 | case DW_AT_external: |
2910 | is_external = form_value.Boolean(); |
2911 | break; |
2912 | |
2913 | default: |
2914 | case DW_AT_declaration: |
2915 | case DW_AT_description: |
2916 | case DW_AT_mutable: |
2917 | case DW_AT_visibility: |
2918 | case DW_AT_sibling: |
2919 | break; |
2920 | } |
2921 | } |
2922 | } |
2923 | |
2924 | if (prop_name) { |
2925 | ConstString fixed_getter; |
2926 | ConstString fixed_setter; |
2927 | |
2928 | // Check if the property getter/setter were provided as full names. |
2929 | // We want basenames, so we extract them. |
2930 | |
2931 | if (prop_getter_name && prop_getter_name[0] == '-') { |
2932 | ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true); |
2933 | prop_getter_name = prop_getter_method.GetSelector().GetCString(); |
2934 | } |
2935 | |
2936 | if (prop_setter_name && prop_setter_name[0] == '-') { |
2937 | ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true); |
2938 | prop_setter_name = prop_setter_method.GetSelector().GetCString(); |
2939 | } |
2940 | |
2941 | // If the names haven't been provided, they need to be filled in. |
2942 | |
2943 | if (!prop_getter_name) { |
2944 | prop_getter_name = prop_name; |
2945 | } |
2946 | if (!prop_setter_name && prop_name[0] && |
2947 | !(prop_attributes & DW_APPLE_PROPERTY_readonly)) { |
2948 | StreamString ss; |
2949 | |
2950 | ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]); |
2951 | |
2952 | fixed_setter.SetString(ss.GetString()); |
2953 | prop_setter_name = fixed_setter.GetCString(); |
2954 | } |
2955 | } |
2956 | |
2957 | // Clang has a DWARF generation bug where sometimes it represents |
2958 | // fields that are references with bad byte size and bit size/offset |
2959 | // information such as: |
2960 | // |
2961 | // DW_AT_byte_size( 0x00 ) |
2962 | // DW_AT_bit_size( 0x40 ) |
2963 | // DW_AT_bit_offset( 0xffffffffffffffc0 ) |
2964 | // |
2965 | // So check the bit offset to make sure it is sane, and if the values |
2966 | // are not sane, remove them. If we don't do this then we will end up |
2967 | // with a crash if we try to use this type in an expression when clang |
2968 | // becomes unhappy with its recycled debug info. |
2969 | |
2970 | if (byte_size == 0 && bit_offset < 0) { |
2971 | bit_size = 0; |
2972 | bit_offset = 0; |
2973 | } |
2974 | |
2975 | // FIXME: Make Clang ignore Objective-C accessibility for expressions |
2976 | if (class_language == eLanguageTypeObjC || |
2977 | class_language == eLanguageTypeObjC_plus_plus) |
2978 | accessibility = eAccessNone; |
2979 | |
2980 | if (member_idx == 0 && !is_artificial && name && |
2981 | (strstr(name, "_vptr$") == name)) { |
2982 | // Not all compilers will mark the vtable pointer member as |
2983 | // artificial (llvm-gcc). We can't have the virtual members in our |
2984 | // classes otherwise it throws off all child offsets since we end up |
2985 | // having and extra pointer sized member in our class layouts. |
2986 | is_artificial = true; |
2987 | } |
2988 | |
2989 | // Handle static members |
2990 | if (is_external && member_byte_offset == UINT32_MAX(4294967295U)) { |
2991 | Type *var_type = die.ResolveTypeUID(DIERef(encoding_form)); |
2992 | |
2993 | if (var_type) { |
2994 | if (accessibility == eAccessNone) |
2995 | accessibility = eAccessPublic; |
2996 | ClangASTContext::AddVariableToRecordType( |
2997 | class_clang_type, name, var_type->GetLayoutCompilerType(), |
2998 | accessibility); |
2999 | } |
3000 | break; |
3001 | } |
3002 | |
3003 | if (is_artificial == false) { |
3004 | Type *member_type = die.ResolveTypeUID(DIERef(encoding_form)); |
3005 | |
3006 | clang::FieldDecl *field_decl = NULL__null; |
3007 | if (tag == DW_TAG_member) { |
3008 | if (member_type) { |
3009 | if (accessibility == eAccessNone) |
3010 | accessibility = default_accessibility; |
3011 | member_accessibilities.push_back(accessibility); |
3012 | |
3013 | uint64_t field_bit_offset = |
3014 | (member_byte_offset == UINT32_MAX(4294967295U) ? 0 |
3015 | : (member_byte_offset * 8)); |
3016 | if (bit_size > 0) { |
3017 | |
3018 | BitfieldInfo this_field_info; |
3019 | this_field_info.bit_offset = field_bit_offset; |
3020 | this_field_info.bit_size = bit_size; |
3021 | |
3022 | ///////////////////////////////////////////////////////////// |
3023 | // How to locate a field given the DWARF debug information |
3024 | // |
3025 | // AT_byte_size indicates the size of the word in which the bit |
3026 | // offset must be interpreted. |
3027 | // |
3028 | // AT_data_member_location indicates the byte offset of the |
3029 | // word from the base address of the structure. |
3030 | // |
3031 | // AT_bit_offset indicates how many bits into the word |
3032 | // (according to the host endianness) the low-order bit of the |
3033 | // field starts. AT_bit_offset can be negative. |
3034 | // |
3035 | // AT_bit_size indicates the size of the field in bits. |
3036 | ///////////////////////////////////////////////////////////// |
3037 | |
3038 | if (data_bit_offset != UINT64_MAX(18446744073709551615UL)) { |
3039 | this_field_info.bit_offset = data_bit_offset; |
3040 | } else { |
3041 | if (byte_size == 0) |
3042 | byte_size = member_type->GetByteSize(); |
3043 | |
3044 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
3045 | if (objfile->GetByteOrder() == eByteOrderLittle) { |
3046 | this_field_info.bit_offset += byte_size * 8; |
3047 | this_field_info.bit_offset -= (bit_offset + bit_size); |
3048 | } else { |
3049 | this_field_info.bit_offset += bit_offset; |
3050 | } |
3051 | } |
3052 | |
3053 | if ((this_field_info.bit_offset >= parent_bit_size) || |
3054 | !last_field_info.NextBitfieldOffsetIsValid( |
3055 | this_field_info.bit_offset)) { |
3056 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
3057 | objfile->GetModule()->ReportWarning( |
3058 | "0x%8.8" PRIx64"l" "x" ": %s bitfield named \"%s\" has invalid " |
3059 | "bit offset (0x%8.8" PRIx64"l" "x" |
3060 | ") member will be ignored. Please file a bug against the " |
3061 | "compiler and include the preprocessed output for %s\n", |
3062 | die.GetID(), DW_TAG_value_to_name(tag), name, |
3063 | this_field_info.bit_offset, |
3064 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
3065 | : "the source file"); |
3066 | this_field_info.Clear(); |
3067 | continue; |
3068 | } |
3069 | |
3070 | // Update the field bit offset we will report for layout |
3071 | field_bit_offset = this_field_info.bit_offset; |
3072 | |
3073 | // If the member to be emitted did not start on a character |
3074 | // boundary and there is empty space between the last field and |
3075 | // this one, then we need to emit an anonymous member filling |
3076 | // up the space up to its start. There are three cases here: |
3077 | // |
3078 | // 1 If the previous member ended on a character boundary, then |
3079 | // we can emit an |
3080 | // anonymous member starting at the most recent character |
3081 | // boundary. |
3082 | // |
3083 | // 2 If the previous member did not end on a character boundary |
3084 | // and the distance |
3085 | // from the end of the previous member to the current member |
3086 | // is less than a |
3087 | // word width, then we can emit an anonymous member starting |
3088 | // right after the |
3089 | // previous member and right before this member. |
3090 | // |
3091 | // 3 If the previous member did not end on a character boundary |
3092 | // and the distance |
3093 | // from the end of the previous member to the current member |
3094 | // is greater than |
3095 | // or equal a word width, then we act as in Case 1. |
3096 | |
3097 | const uint64_t character_width = 8; |
3098 | const uint64_t word_width = 32; |
3099 | |
3100 | // Objective-C has invalid DW_AT_bit_offset values in older |
3101 | // versions of clang, so we have to be careful and only insert |
3102 | // unnamed bitfields if we have a new enough clang. |
3103 | bool detect_unnamed_bitfields = true; |
3104 | |
3105 | if (class_language == eLanguageTypeObjC || |
3106 | class_language == eLanguageTypeObjC_plus_plus) |
3107 | detect_unnamed_bitfields = |
3108 | die.GetCU()->Supports_unnamed_objc_bitfields(); |
3109 | |
3110 | if (detect_unnamed_bitfields) { |
3111 | BitfieldInfo anon_field_info; |
3112 | |
3113 | if ((this_field_info.bit_offset % character_width) != |
3114 | 0) // not char aligned |
3115 | { |
3116 | uint64_t last_field_end = 0; |
3117 | |
3118 | if (last_field_info.IsValid()) |
3119 | last_field_end = |
3120 | last_field_info.bit_offset + last_field_info.bit_size; |
3121 | |
3122 | if (this_field_info.bit_offset != last_field_end) { |
3123 | if (((last_field_end % character_width) == 0) || // case 1 |
3124 | (this_field_info.bit_offset - last_field_end >= |
3125 | word_width)) // case 3 |
3126 | { |
3127 | anon_field_info.bit_size = |
3128 | this_field_info.bit_offset % character_width; |
3129 | anon_field_info.bit_offset = |
3130 | this_field_info.bit_offset - |
3131 | anon_field_info.bit_size; |
3132 | } else // case 2 |
3133 | { |
3134 | anon_field_info.bit_size = |
3135 | this_field_info.bit_offset - last_field_end; |
3136 | anon_field_info.bit_offset = last_field_end; |
3137 | } |
3138 | } |
3139 | } |
3140 | |
3141 | if (anon_field_info.IsValid()) { |
3142 | clang::FieldDecl *unnamed_bitfield_decl = |
3143 | ClangASTContext::AddFieldToRecordType( |
3144 | class_clang_type, NULL__null, |
3145 | m_ast.GetBuiltinTypeForEncodingAndBitSize( |
3146 | eEncodingSint, word_width), |
3147 | accessibility, anon_field_info.bit_size); |
3148 | |
3149 | layout_info.field_offsets.insert(std::make_pair( |
3150 | unnamed_bitfield_decl, anon_field_info.bit_offset)); |
3151 | } |
3152 | } |
3153 | last_field_info = this_field_info; |
3154 | } else { |
3155 | last_field_info.Clear(); |
3156 | } |
3157 | |
3158 | CompilerType member_clang_type = |
3159 | member_type->GetLayoutCompilerType(); |
3160 | if (!member_clang_type.IsCompleteType()) |
3161 | member_clang_type.GetCompleteType(); |
3162 | |
3163 | { |
3164 | // Older versions of clang emit array[0] and array[1] in the |
3165 | // same way (<rdar://problem/12566646>). If the current field |
3166 | // is at the end of the structure, then there is definitely no |
3167 | // room for extra elements and we override the type to |
3168 | // array[0]. |
3169 | |
3170 | CompilerType member_array_element_type; |
3171 | uint64_t member_array_size; |
3172 | bool member_array_is_incomplete; |
3173 | |
3174 | if (member_clang_type.IsArrayType( |
3175 | &member_array_element_type, &member_array_size, |
3176 | &member_array_is_incomplete) && |
3177 | !member_array_is_incomplete) { |
3178 | uint64_t parent_byte_size = |
3179 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, |
3180 | UINT64_MAX(18446744073709551615UL)); |
3181 | |
3182 | if (member_byte_offset >= parent_byte_size) { |
3183 | if (member_array_size != 1 && |
3184 | (member_array_size != 0 || |
3185 | member_byte_offset > parent_byte_size)) { |
3186 | module_sp->ReportError( |
3187 | "0x%8.8" PRIx64"l" "x" |
3188 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
3189 | " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x", |
3190 | die.GetID(), name, encoding_form.Reference(), |
3191 | parent_die.GetID()); |
3192 | } |
3193 | |
3194 | member_clang_type = m_ast.CreateArrayType( |
3195 | member_array_element_type, 0, false); |
3196 | } |
3197 | } |
3198 | } |
3199 | |
3200 | if (ClangASTContext::IsCXXClassType(member_clang_type) && |
3201 | member_clang_type.GetCompleteType() == false) { |
3202 | if (die.GetCU()->GetProducer() == eProducerClang) |
3203 | module_sp->ReportError( |
3204 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3205 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
3206 | "complete definition.\nTry compiling the source file " |
3207 | "with -fstandalone-debug", |
3208 | parent_die.GetOffset(), parent_die.GetName(), |
3209 | die.GetOffset(), name); |
3210 | else |
3211 | module_sp->ReportError( |
3212 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3213 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
3214 | "complete definition.\nPlease file a bug against the " |
3215 | "compiler and include the preprocessed output for %s", |
3216 | parent_die.GetOffset(), parent_die.GetName(), |
3217 | die.GetOffset(), name, |
3218 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
3219 | : "the source file"); |
3220 | // We have no choice other than to pretend that the member |
3221 | // class is complete. If we don't do this, clang will crash |
3222 | // when trying to layout the class. Since we provide layout |
3223 | // assistance, all ivars in this class and other classes will |
3224 | // be fine, this is the best we can do short of crashing. |
3225 | if (ClangASTContext::StartTagDeclarationDefinition( |
3226 | member_clang_type)) { |
3227 | ClangASTContext::CompleteTagDeclarationDefinition( |
3228 | member_clang_type); |
3229 | } else { |
3230 | module_sp->ReportError( |
3231 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3232 | "0x%8.8x (%s) whose type claims to be a C++ class but we " |
3233 | "were not able to start its definition.\nPlease file a " |
3234 | "bug and attach the file at the start of this error " |
3235 | "message", |
3236 | parent_die.GetOffset(), parent_die.GetName(), |
3237 | die.GetOffset(), name); |
3238 | } |
3239 | } |
3240 | |
3241 | field_decl = ClangASTContext::AddFieldToRecordType( |
3242 | class_clang_type, name, member_clang_type, accessibility, |
3243 | bit_size); |
3244 | |
3245 | m_ast.SetMetadataAsUserID(field_decl, die.GetID()); |
3246 | |
3247 | layout_info.field_offsets.insert( |
3248 | std::make_pair(field_decl, field_bit_offset)); |
3249 | } else { |
3250 | if (name) |
3251 | module_sp->ReportError( |
3252 | "0x%8.8" PRIx64"l" "x" |
3253 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
3254 | " which was unable to be parsed", |
3255 | die.GetID(), name, encoding_form.Reference()); |
3256 | else |
3257 | module_sp->ReportError( |
3258 | "0x%8.8" PRIx64"l" "x" |
3259 | ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x" |
3260 | " which was unable to be parsed", |
3261 | die.GetID(), encoding_form.Reference()); |
3262 | } |
3263 | } |
3264 | |
3265 | if (prop_name != NULL__null && member_type) { |
3266 | clang::ObjCIvarDecl *ivar_decl = NULL__null; |
3267 | |
3268 | if (field_decl) { |
3269 | ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); |
3270 | assert(ivar_decl != NULL)(static_cast <bool> (ivar_decl != __null) ? void (0) : __assert_fail ("ivar_decl != NULL", "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3270, __extension__ __PRETTY_FUNCTION__)); |
3271 | } |
3272 | |
3273 | ClangASTMetadata metadata; |
3274 | metadata.SetUserID(die.GetID()); |
3275 | delayed_properties.push_back(DelayedAddObjCClassProperty( |
3276 | class_clang_type, prop_name, |
3277 | member_type->GetLayoutCompilerType(), ivar_decl, |
3278 | prop_setter_name, prop_getter_name, prop_attributes, |
3279 | &metadata)); |
3280 | |
3281 | if (ivar_decl) |
3282 | m_ast.SetMetadataAsUserID(ivar_decl, die.GetID()); |
3283 | } |
3284 | } |
3285 | } |
3286 | ++member_idx; |
3287 | } break; |
3288 | |
3289 | case DW_TAG_subprogram: |
3290 | // Let the type parsing code handle this one for us. |
3291 | member_function_dies.Append(die); |
3292 | break; |
3293 | |
3294 | case DW_TAG_inheritance: { |
3295 | is_a_class = true; |
3296 | if (default_accessibility == eAccessNone) |
3297 | default_accessibility = eAccessPrivate; |
3298 | // TODO: implement DW_TAG_inheritance type parsing |
3299 | DWARFAttributes attributes; |
3300 | const size_t num_attributes = die.GetAttributes(attributes); |
3301 | if (num_attributes > 0) { |
3302 | Declaration decl; |
3303 | DWARFExpression location(die.GetCU()); |
3304 | DWARFFormValue encoding_form; |
3305 | AccessType accessibility = default_accessibility; |
3306 | bool is_virtual = false; |
3307 | bool is_base_of_class = true; |
3308 | off_t member_byte_offset = 0; |
3309 | uint32_t i; |
3310 | for (i = 0; i < num_attributes; ++i) { |
3311 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3312 | DWARFFormValue form_value; |
3313 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3314 | switch (attr) { |
3315 | case DW_AT_decl_file: |
3316 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
3317 | form_value.Unsigned())); |
3318 | break; |
3319 | case DW_AT_decl_line: |
3320 | decl.SetLine(form_value.Unsigned()); |
3321 | break; |
3322 | case DW_AT_decl_column: |
3323 | decl.SetColumn(form_value.Unsigned()); |
3324 | break; |
3325 | case DW_AT_type: |
3326 | encoding_form = form_value; |
3327 | break; |
3328 | case DW_AT_data_member_location: |
3329 | if (form_value.BlockData()) { |
3330 | Value initialValue(0); |
3331 | Value memberOffset(0); |
3332 | const DWARFDataExtractor &debug_info_data = die.GetData(); |
3333 | uint32_t block_length = form_value.Unsigned(); |
3334 | uint32_t block_offset = |
3335 | form_value.BlockData() - debug_info_data.GetDataStart(); |
3336 | if (DWARFExpression::Evaluate(nullptr, nullptr, module_sp, |
3337 | debug_info_data, die.GetCU(), |
3338 | block_offset, block_length, |
3339 | eRegisterKindDWARF, &initialValue, |
3340 | nullptr, memberOffset, nullptr)) { |
3341 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
3342 | } |
3343 | } else { |
3344 | // With DWARF 3 and later, if the value is an integer constant, |
3345 | // this form value is the offset in bytes from the beginning of |
3346 | // the containing entity. |
3347 | member_byte_offset = form_value.Unsigned(); |
3348 | } |
3349 | break; |
3350 | |
3351 | case DW_AT_accessibility: |
3352 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
3353 | break; |
3354 | |
3355 | case DW_AT_virtuality: |
3356 | is_virtual = form_value.Boolean(); |
3357 | break; |
3358 | |
3359 | case DW_AT_sibling: |
3360 | break; |
3361 | |
3362 | default: |
3363 | break; |
3364 | } |
3365 | } |
3366 | } |
3367 | |
3368 | Type *base_class_type = die.ResolveTypeUID(DIERef(encoding_form)); |
3369 | if (base_class_type == NULL__null) { |
3370 | module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to " |
3371 | "resolve the base class at 0x%8.8" PRIx64"l" "x" |
3372 | " from enclosing type 0x%8.8x. \nPlease file " |
3373 | "a bug and attach the file at the start of " |
3374 | "this error message", |
3375 | die.GetOffset(), encoding_form.Reference(), |
3376 | parent_die.GetOffset()); |
3377 | break; |
3378 | } |
3379 | |
3380 | CompilerType base_class_clang_type = |
3381 | base_class_type->GetFullCompilerType(); |
3382 | assert(base_class_clang_type)(static_cast <bool> (base_class_clang_type) ? void (0) : __assert_fail ("base_class_clang_type", "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3382, __extension__ __PRETTY_FUNCTION__)); |
3383 | if (class_language == eLanguageTypeObjC) { |
3384 | ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); |
3385 | } else { |
3386 | base_classes.push_back(ast->CreateBaseClassSpecifier( |
3387 | base_class_clang_type.GetOpaqueQualType(), accessibility, |
3388 | is_virtual, is_base_of_class)); |
3389 | |
3390 | if (is_virtual) { |
3391 | // Do not specify any offset for virtual inheritance. The DWARF |
3392 | // produced by clang doesn't give us a constant offset, but gives |
3393 | // us a DWARF expressions that requires an actual object in memory. |
3394 | // the DW_AT_data_member_location for a virtual base class looks |
3395 | // like: |
3396 | // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, |
3397 | // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, |
3398 | // DW_OP_plus ) |
3399 | // Given this, there is really no valid response we can give to |
3400 | // clang for virtual base class offsets, and this should eventually |
3401 | // be removed from LayoutRecordType() in the external |
3402 | // AST source in clang. |
3403 | } else { |
3404 | layout_info.base_offsets.insert(std::make_pair( |
3405 | ast->GetAsCXXRecordDecl( |
3406 | base_class_clang_type.GetOpaqueQualType()), |
3407 | clang::CharUnits::fromQuantity(member_byte_offset))); |
3408 | } |
3409 | } |
3410 | } |
3411 | } break; |
3412 | |
3413 | default: |
3414 | break; |
3415 | } |
3416 | } |
3417 | |
3418 | return true; |
3419 | } |
3420 | |
3421 | size_t DWARFASTParserClang::ParseChildParameters( |
3422 | const SymbolContext &sc, clang::DeclContext *containing_decl_ctx, |
3423 | const DWARFDIE &parent_die, bool skip_artificial, bool &is_static, |
3424 | bool &is_variadic, bool &has_template_params, |
3425 | std::vector<CompilerType> &function_param_types, |
3426 | std::vector<clang::ParmVarDecl *> &function_param_decls, |
3427 | unsigned &type_quals) { |
3428 | if (!parent_die) |
3429 | return 0; |
3430 | |
3431 | size_t arg_idx = 0; |
3432 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
3433 | die = die.GetSibling()) { |
3434 | const dw_tag_t tag = die.Tag(); |
3435 | switch (tag) { |
3436 | case DW_TAG_formal_parameter: { |
3437 | DWARFAttributes attributes; |
3438 | const size_t num_attributes = die.GetAttributes(attributes); |
3439 | if (num_attributes > 0) { |
3440 | const char *name = NULL__null; |
3441 | Declaration decl; |
3442 | DWARFFormValue param_type_die_form; |
3443 | bool is_artificial = false; |
3444 | // one of None, Auto, Register, Extern, Static, PrivateExtern |
3445 | |
3446 | clang::StorageClass storage = clang::SC_None; |
3447 | uint32_t i; |
3448 | for (i = 0; i < num_attributes; ++i) { |
3449 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3450 | DWARFFormValue form_value; |
3451 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3452 | switch (attr) { |
3453 | case DW_AT_decl_file: |
3454 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
3455 | form_value.Unsigned())); |
3456 | break; |
3457 | case DW_AT_decl_line: |
3458 | decl.SetLine(form_value.Unsigned()); |
3459 | break; |
3460 | case DW_AT_decl_column: |
3461 | decl.SetColumn(form_value.Unsigned()); |
3462 | break; |
3463 | case DW_AT_name: |
3464 | name = form_value.AsCString(); |
3465 | break; |
3466 | case DW_AT_type: |
3467 | param_type_die_form = form_value; |
3468 | break; |
3469 | case DW_AT_artificial: |
3470 | is_artificial = form_value.Boolean(); |
3471 | break; |
3472 | case DW_AT_location: |
3473 | case DW_AT_const_value: |
3474 | case DW_AT_default_value: |
3475 | case DW_AT_description: |
3476 | case DW_AT_endianity: |
3477 | case DW_AT_is_optional: |
3478 | case DW_AT_segment: |
3479 | case DW_AT_variable_parameter: |
3480 | default: |
3481 | case DW_AT_abstract_origin: |
3482 | case DW_AT_sibling: |
3483 | break; |
3484 | } |
3485 | } |
3486 | } |
3487 | |
3488 | bool skip = false; |
3489 | if (skip_artificial && is_artificial) { |
3490 | // In order to determine if a C++ member function is "const" we |
3491 | // have to look at the const-ness of "this"... |
3492 | if (arg_idx == 0 && |
3493 | DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()) && |
3494 | // Often times compilers omit the "this" name for the |
3495 | // specification DIEs, so we can't rely upon the name being in |
3496 | // the formal parameter DIE... |
3497 | (name == NULL__null || ::strcmp(name, "this") == 0)) { |
3498 | Type *this_type = die.ResolveTypeUID(DIERef(param_type_die_form)); |
3499 | if (this_type) { |
3500 | uint32_t encoding_mask = this_type->GetEncodingMask(); |
3501 | if (encoding_mask & Type::eEncodingIsPointerUID) { |
3502 | is_static = false; |
3503 | |
3504 | if (encoding_mask & (1u << Type::eEncodingIsConstUID)) |
3505 | type_quals |= clang::Qualifiers::Const; |
3506 | if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) |
3507 | type_quals |= clang::Qualifiers::Volatile; |
3508 | } |
3509 | } |
3510 | } |
3511 | skip = true; |
3512 | } |
3513 | |
3514 | if (!skip) { |
3515 | Type *type = die.ResolveTypeUID(DIERef(param_type_die_form)); |
3516 | if (type) { |
3517 | function_param_types.push_back(type->GetForwardCompilerType()); |
3518 | |
3519 | clang::ParmVarDecl *param_var_decl = |
3520 | m_ast.CreateParameterDeclaration( |
3521 | name, type->GetForwardCompilerType(), storage); |
3522 | assert(param_var_decl)(static_cast <bool> (param_var_decl) ? void (0) : __assert_fail ("param_var_decl", "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3522, __extension__ __PRETTY_FUNCTION__)); |
3523 | function_param_decls.push_back(param_var_decl); |
3524 | |
3525 | m_ast.SetMetadataAsUserID(param_var_decl, die.GetID()); |
3526 | } |
3527 | } |
3528 | } |
3529 | arg_idx++; |
3530 | } break; |
3531 | |
3532 | case DW_TAG_unspecified_parameters: |
3533 | is_variadic = true; |
3534 | break; |
3535 | |
3536 | case DW_TAG_template_type_parameter: |
3537 | case DW_TAG_template_value_parameter: |
3538 | case DW_TAG_GNU_template_parameter_pack: |
3539 | // The one caller of this was never using the template_param_infos, and |
3540 | // the local variable was taking up a large amount of stack space in |
3541 | // SymbolFileDWARF::ParseType() so this was removed. If we ever need the |
3542 | // template params back, we can add them back. |
3543 | // ParseTemplateDIE (dwarf_cu, die, template_param_infos); |
3544 | has_template_params = true; |
3545 | break; |
3546 | |
3547 | default: |
3548 | break; |
3549 | } |
3550 | } |
3551 | return arg_idx; |
3552 | } |
3553 | |
3554 | void DWARFASTParserClang::ParseChildArrayInfo( |
3555 | const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index, |
3556 | std::vector<uint64_t> &element_orders, uint32_t &byte_stride, |
3557 | uint32_t &bit_stride) { |
3558 | if (!parent_die) |
3559 | return; |
3560 | |
3561 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
3562 | die = die.GetSibling()) { |
3563 | const dw_tag_t tag = die.Tag(); |
3564 | switch (tag) { |
3565 | case DW_TAG_subrange_type: { |
3566 | DWARFAttributes attributes; |
3567 | const size_t num_child_attributes = die.GetAttributes(attributes); |
3568 | if (num_child_attributes > 0) { |
3569 | uint64_t num_elements = 0; |
3570 | uint64_t lower_bound = 0; |
3571 | uint64_t upper_bound = 0; |
3572 | bool upper_bound_valid = false; |
3573 | uint32_t i; |
3574 | for (i = 0; i < num_child_attributes; ++i) { |
3575 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3576 | DWARFFormValue form_value; |
3577 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3578 | switch (attr) { |
3579 | case DW_AT_name: |
3580 | break; |
3581 | |
3582 | case DW_AT_count: |
3583 | num_elements = form_value.Unsigned(); |
3584 | break; |
3585 | |
3586 | case DW_AT_bit_stride: |
3587 | bit_stride = form_value.Unsigned(); |
3588 | break; |
3589 | |
3590 | case DW_AT_byte_stride: |
3591 | byte_stride = form_value.Unsigned(); |
3592 | break; |
3593 | |
3594 | case DW_AT_lower_bound: |
3595 | lower_bound = form_value.Unsigned(); |
3596 | break; |
3597 | |
3598 | case DW_AT_upper_bound: |
3599 | upper_bound_valid = true; |
3600 | upper_bound = form_value.Unsigned(); |
3601 | break; |
3602 | |
3603 | default: |
3604 | case DW_AT_abstract_origin: |
3605 | case DW_AT_accessibility: |
3606 | case DW_AT_allocated: |
3607 | case DW_AT_associated: |
3608 | case DW_AT_data_location: |
3609 | case DW_AT_declaration: |
3610 | case DW_AT_description: |
3611 | case DW_AT_sibling: |
3612 | case DW_AT_threads_scaled: |
3613 | case DW_AT_type: |
3614 | case DW_AT_visibility: |
3615 | break; |
3616 | } |
3617 | } |
3618 | } |
3619 | |
3620 | if (num_elements == 0) { |
3621 | if (upper_bound_valid && upper_bound >= lower_bound) |
3622 | num_elements = upper_bound - lower_bound + 1; |
3623 | } |
3624 | |
3625 | element_orders.push_back(num_elements); |
3626 | } |
3627 | } break; |
3628 | } |
3629 | } |
3630 | } |
3631 | |
3632 | Type *DWARFASTParserClang::GetTypeForDIE(const DWARFDIE &die) { |
3633 | if (die) { |
3634 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3635 | DWARFAttributes attributes; |
3636 | const size_t num_attributes = die.GetAttributes(attributes); |
3637 | if (num_attributes > 0) { |
3638 | DWARFFormValue type_die_form; |
3639 | for (size_t i = 0; i < num_attributes; ++i) { |
3640 | dw_attr_t attr = attributes.AttributeAtIndex(i); |
3641 | DWARFFormValue form_value; |
3642 | |
3643 | if (attr == DW_AT_type && |
3644 | attributes.ExtractFormValueAtIndex(i, form_value)) |
3645 | return dwarf->ResolveTypeUID(dwarf->GetDIE(DIERef(form_value)), true); |
3646 | } |
3647 | } |
3648 | } |
3649 | |
3650 | return nullptr; |
3651 | } |
3652 | |
3653 | clang::Decl *DWARFASTParserClang::GetClangDeclForDIE(const DWARFDIE &die) { |
3654 | if (!die) |
3655 | return nullptr; |
3656 | |
3657 | switch (die.Tag()) { |
3658 | case DW_TAG_variable: |
3659 | case DW_TAG_constant: |
3660 | case DW_TAG_formal_parameter: |
3661 | case DW_TAG_imported_declaration: |
3662 | case DW_TAG_imported_module: |
3663 | break; |
3664 | default: |
3665 | return nullptr; |
3666 | } |
3667 | |
3668 | DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE()); |
3669 | if (cache_pos != m_die_to_decl.end()) |
3670 | return cache_pos->second; |
3671 | |
3672 | if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) { |
3673 | clang::Decl *decl = GetClangDeclForDIE(spec_die); |
3674 | m_die_to_decl[die.GetDIE()] = decl; |
3675 | m_decl_to_die[decl].insert(die.GetDIE()); |
3676 | return decl; |
3677 | } |
3678 | |
3679 | if (DWARFDIE abstract_origin_die = |
3680 | die.GetReferencedDIE(DW_AT_abstract_origin)) { |
3681 | clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die); |
3682 | m_die_to_decl[die.GetDIE()] = decl; |
3683 | m_decl_to_die[decl].insert(die.GetDIE()); |
3684 | return decl; |
3685 | } |
3686 | |
3687 | clang::Decl *decl = nullptr; |
3688 | switch (die.Tag()) { |
3689 | case DW_TAG_variable: |
3690 | case DW_TAG_constant: |
3691 | case DW_TAG_formal_parameter: { |
3692 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3693 | Type *type = GetTypeForDIE(die); |
3694 | if (dwarf && type) { |
3695 | const char *name = die.GetName(); |
3696 | clang::DeclContext *decl_context = |
3697 | ClangASTContext::DeclContextGetAsDeclContext( |
3698 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3699 | decl = m_ast.CreateVariableDeclaration( |
3700 | decl_context, name, |
3701 | ClangUtil::GetQualType(type->GetForwardCompilerType())); |
3702 | } |
3703 | break; |
3704 | } |
3705 | case DW_TAG_imported_declaration: { |
3706 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3707 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
3708 | if (imported_uid) { |
3709 | CompilerDecl imported_decl = imported_uid.GetDecl(); |
3710 | if (imported_decl) { |
3711 | clang::DeclContext *decl_context = |
3712 | ClangASTContext::DeclContextGetAsDeclContext( |
3713 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3714 | if (clang::NamedDecl *clang_imported_decl = |
3715 | llvm::dyn_cast<clang::NamedDecl>( |
3716 | (clang::Decl *)imported_decl.GetOpaqueDecl())) |
3717 | decl = |
3718 | m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl); |
3719 | } |
3720 | } |
3721 | break; |
3722 | } |
3723 | case DW_TAG_imported_module: { |
3724 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3725 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
3726 | |
3727 | if (imported_uid) { |
3728 | CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext(); |
3729 | if (imported_decl_ctx) { |
3730 | clang::DeclContext *decl_context = |
3731 | ClangASTContext::DeclContextGetAsDeclContext( |
3732 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3733 | if (clang::NamespaceDecl *ns_decl = |
3734 | ClangASTContext::DeclContextGetAsNamespaceDecl( |
3735 | imported_decl_ctx)) |
3736 | decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl); |
3737 | } |
3738 | } |
3739 | break; |
3740 | } |
3741 | default: |
3742 | break; |
3743 | } |
3744 | |
3745 | m_die_to_decl[die.GetDIE()] = decl; |
3746 | m_decl_to_die[decl].insert(die.GetDIE()); |
3747 | |
3748 | return decl; |
3749 | } |
3750 | |
3751 | clang::DeclContext * |
3752 | DWARFASTParserClang::GetClangDeclContextForDIE(const DWARFDIE &die) { |
3753 | if (die) { |
3754 | clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die); |
3755 | if (decl_ctx) |
3756 | return decl_ctx; |
3757 | |
3758 | bool try_parsing_type = true; |
3759 | switch (die.Tag()) { |
3760 | case DW_TAG_compile_unit: |
3761 | case DW_TAG_partial_unit: |
3762 | decl_ctx = m_ast.GetTranslationUnitDecl(); |
3763 | try_parsing_type = false; |
3764 | break; |
3765 | |
3766 | case DW_TAG_namespace: |
3767 | decl_ctx = ResolveNamespaceDIE(die); |
3768 | try_parsing_type = false; |
3769 | break; |
3770 | |
3771 | case DW_TAG_lexical_block: |
3772 | decl_ctx = GetDeclContextForBlock(die); |
3773 | try_parsing_type = false; |
3774 | break; |
3775 | |
3776 | default: |
3777 | break; |
3778 | } |
3779 | |
3780 | if (decl_ctx == nullptr && try_parsing_type) { |
3781 | Type *type = die.GetDWARF()->ResolveType(die); |
3782 | if (type) |
3783 | decl_ctx = GetCachedClangDeclContextForDIE(die); |
3784 | } |
3785 | |
3786 | if (decl_ctx) { |
3787 | LinkDeclContextToDIE(decl_ctx, die); |
3788 | return decl_ctx; |
3789 | } |
3790 | } |
3791 | return nullptr; |
3792 | } |
3793 | |
3794 | static bool IsSubroutine(const DWARFDIE &die) { |
3795 | switch (die.Tag()) { |
3796 | case DW_TAG_subprogram: |
3797 | case DW_TAG_inlined_subroutine: |
3798 | return true; |
3799 | default: |
3800 | return false; |
3801 | } |
3802 | } |
3803 | |
3804 | static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die) { |
3805 | for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) { |
3806 | if (IsSubroutine(candidate)) { |
3807 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
3808 | return candidate; |
3809 | } else { |
3810 | return DWARFDIE(); |
3811 | } |
3812 | } |
3813 | } |
3814 | assert(0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "(static_cast <bool> (0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on " "something not in a function") ? void (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3815, __extension__ __PRETTY_FUNCTION__)) |
3815 | "something not in a function")(static_cast <bool> (0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on " "something not in a function") ? void (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3815, __extension__ __PRETTY_FUNCTION__)); |
3816 | return DWARFDIE(); |
3817 | } |
3818 | |
3819 | static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context) { |
3820 | for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid(); |
3821 | candidate = candidate.GetSibling()) { |
3822 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
3823 | return candidate; |
3824 | } |
3825 | } |
3826 | return DWARFDIE(); |
3827 | } |
3828 | |
3829 | static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block, |
3830 | const DWARFDIE &function) { |
3831 | assert(IsSubroutine(function))(static_cast <bool> (IsSubroutine(function)) ? void (0) : __assert_fail ("IsSubroutine(function)", "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3831, __extension__ __PRETTY_FUNCTION__)); |
3832 | for (DWARFDIE context = block; context != function.GetParent(); |
3833 | context = context.GetParent()) { |
3834 | assert(!IsSubroutine(context) || context == function)(static_cast <bool> (!IsSubroutine(context) || context == function) ? void (0) : __assert_fail ("!IsSubroutine(context) || context == function" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3834, __extension__ __PRETTY_FUNCTION__)); |
3835 | if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) { |
3836 | return child; |
3837 | } |
3838 | } |
3839 | return DWARFDIE(); |
3840 | } |
3841 | |
3842 | clang::DeclContext * |
3843 | DWARFASTParserClang::GetDeclContextForBlock(const DWARFDIE &die) { |
3844 | assert(die.Tag() == DW_TAG_lexical_block)(static_cast <bool> (die.Tag() == DW_TAG_lexical_block) ? void (0) : __assert_fail ("die.Tag() == DW_TAG_lexical_block" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3844, __extension__ __PRETTY_FUNCTION__)); |
3845 | DWARFDIE containing_function_with_abstract_origin = |
3846 | GetContainingFunctionWithAbstractOrigin(die); |
3847 | if (!containing_function_with_abstract_origin) { |
3848 | return (clang::DeclContext *)ResolveBlockDIE(die); |
3849 | } |
3850 | DWARFDIE child = FindFirstChildWithAbstractOrigin( |
3851 | die, containing_function_with_abstract_origin); |
3852 | CompilerDeclContext decl_context = |
3853 | GetDeclContextContainingUIDFromDWARF(child); |
3854 | return (clang::DeclContext *)decl_context.GetOpaqueDeclContext(); |
3855 | } |
3856 | |
3857 | clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) { |
3858 | if (die && die.Tag() == DW_TAG_lexical_block) { |
3859 | clang::BlockDecl *decl = |
3860 | llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]); |
3861 | |
3862 | if (!decl) { |
3863 | DWARFDIE decl_context_die; |
3864 | clang::DeclContext *decl_context = |
3865 | GetClangDeclContextContainingDIE(die, &decl_context_die); |
3866 | decl = m_ast.CreateBlockDeclaration(decl_context); |
3867 | |
3868 | if (decl) |
3869 | LinkDeclContextToDIE((clang::DeclContext *)decl, die); |
3870 | } |
3871 | |
3872 | return decl; |
3873 | } |
3874 | return nullptr; |
3875 | } |
3876 | |
3877 | clang::NamespaceDecl * |
3878 | DWARFASTParserClang::ResolveNamespaceDIE(const DWARFDIE &die) { |
3879 | if (die && die.Tag() == DW_TAG_namespace) { |
3880 | // See if we already parsed this namespace DIE and associated it with a |
3881 | // uniqued namespace declaration |
3882 | clang::NamespaceDecl *namespace_decl = |
3883 | static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]); |
3884 | if (namespace_decl) |
3885 | return namespace_decl; |
3886 | else { |
3887 | const char *namespace_name = die.GetName(); |
3888 | clang::DeclContext *containing_decl_ctx = |
3889 | GetClangDeclContextContainingDIE(die, nullptr); |
3890 | namespace_decl = m_ast.GetUniqueNamespaceDeclaration(namespace_name, |
3891 | containing_decl_ctx); |
3892 | Log *log = |
3893 | nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
3894 | if (log) { |
3895 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3896 | if (namespace_name) { |
3897 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
3898 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
3899 | ": DW_TAG_namespace with DW_AT_name(\"%s\") => " |
3900 | "clang::NamespaceDecl *%p (original = %p)", |
3901 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
3902 | namespace_name, static_cast<void *>(namespace_decl), |
3903 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
3904 | } else { |
3905 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
3906 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
3907 | ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p " |
3908 | "(original = %p)", |
3909 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
3910 | static_cast<void *>(namespace_decl), |
3911 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
3912 | } |
3913 | } |
3914 | |
3915 | if (namespace_decl) |
3916 | LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die); |
3917 | return namespace_decl; |
3918 | } |
3919 | } |
3920 | return nullptr; |
3921 | } |
3922 | |
3923 | clang::DeclContext *DWARFASTParserClang::GetClangDeclContextContainingDIE( |
3924 | const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) { |
3925 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3926 | |
3927 | DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die); |
3928 | |
3929 | if (decl_ctx_die_copy) |
3930 | *decl_ctx_die_copy = decl_ctx_die; |
3931 | |
3932 | if (decl_ctx_die) { |
3933 | clang::DeclContext *clang_decl_ctx = |
3934 | GetClangDeclContextForDIE(decl_ctx_die); |
3935 | if (clang_decl_ctx) |
3936 | return clang_decl_ctx; |
3937 | } |
3938 | return m_ast.GetTranslationUnitDecl(); |
3939 | } |
3940 | |
3941 | clang::DeclContext * |
3942 | DWARFASTParserClang::GetCachedClangDeclContextForDIE(const DWARFDIE &die) { |
3943 | if (die) { |
3944 | DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); |
3945 | if (pos != m_die_to_decl_ctx.end()) |
3946 | return pos->second; |
3947 | } |
3948 | return nullptr; |
3949 | } |
3950 | |
3951 | void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx, |
3952 | const DWARFDIE &die) { |
3953 | m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; |
3954 | // There can be many DIEs for a single decl context |
3955 | // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); |
3956 | m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die)); |
3957 | } |
3958 | |
3959 | bool DWARFASTParserClang::CopyUniqueClassMethodTypes( |
3960 | const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die, |
3961 | lldb_private::Type *class_type, DWARFDIECollection &failures) { |
3962 | if (!class_type || !src_class_die || !dst_class_die) |
3963 | return false; |
3964 | if (src_class_die.Tag() != dst_class_die.Tag()) |
3965 | return false; |
3966 | |
3967 | // We need to complete the class type so we can get all of the method types |
3968 | // parsed so we can then unique those types to their equivalent counterparts |
3969 | // in "dst_cu" and "dst_class_die" |
3970 | class_type->GetFullCompilerType(); |
3971 | |
3972 | DWARFDIE src_die; |
3973 | DWARFDIE dst_die; |
3974 | UniqueCStringMap<DWARFDIE> src_name_to_die; |
3975 | UniqueCStringMap<DWARFDIE> dst_name_to_die; |
3976 | UniqueCStringMap<DWARFDIE> src_name_to_die_artificial; |
3977 | UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial; |
3978 | for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); |
3979 | src_die = src_die.GetSibling()) { |
3980 | if (src_die.Tag() == DW_TAG_subprogram) { |
3981 | // Make sure this is a declaration and not a concrete instance by looking |
3982 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
3983 | // are placed inside the class definitions and shouldn't be included in |
3984 | // the list of things are are tracking here. |
3985 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
3986 | const char *src_name = src_die.GetMangledName(); |
3987 | if (src_name) { |
3988 | ConstString src_const_name(src_name); |
3989 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
3990 | src_name_to_die_artificial.Append(src_const_name, src_die); |
3991 | else |
3992 | src_name_to_die.Append(src_const_name, src_die); |
3993 | } |
3994 | } |
3995 | } |
3996 | } |
3997 | for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); |
3998 | dst_die = dst_die.GetSibling()) { |
3999 | if (dst_die.Tag() == DW_TAG_subprogram) { |
4000 | // Make sure this is a declaration and not a concrete instance by looking |
4001 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
4002 | // are placed inside the class definitions and shouldn't be included in |
4003 | // the list of things are are tracking here. |
4004 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
4005 | const char *dst_name = dst_die.GetMangledName(); |
4006 | if (dst_name) { |
4007 | ConstString dst_const_name(dst_name); |
4008 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
4009 | dst_name_to_die_artificial.Append(dst_const_name, dst_die); |
4010 | else |
4011 | dst_name_to_die.Append(dst_const_name, dst_die); |
4012 | } |
4013 | } |
4014 | } |
4015 | } |
4016 | const uint32_t src_size = src_name_to_die.GetSize(); |
4017 | const uint32_t dst_size = dst_name_to_die.GetSize(); |
4018 | Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | |
4019 | // DWARF_LOG_TYPE_COMPLETION)); |
4020 | |
4021 | // Is everything kosher so we can go through the members at top speed? |
4022 | bool fast_path = true; |
4023 | |
4024 | if (src_size != dst_size) { |
4025 | if (src_size != 0 && dst_size != 0) { |
4026 | if (log) |
4027 | log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, " |
4028 | "but they didn't have the same size (src=%d, dst=%d)", |
4029 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
4030 | src_size, dst_size); |
4031 | } |
4032 | |
4033 | fast_path = false; |
4034 | } |
4035 | |
4036 | uint32_t idx; |
4037 | |
4038 | if (fast_path) { |
4039 | for (idx = 0; idx < src_size; ++idx) { |
4040 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
4041 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
4042 | |
4043 | if (src_die.Tag() != dst_die.Tag()) { |
4044 | if (log) |
4045 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
4046 | "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", |
4047 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
4048 | src_die.GetOffset(), src_die.GetTagAsCString(), |
4049 | dst_die.GetOffset(), dst_die.GetTagAsCString()); |
4050 | fast_path = false; |
4051 | } |
4052 | |
4053 | const char *src_name = src_die.GetMangledName(); |
4054 | const char *dst_name = dst_die.GetMangledName(); |
4055 | |
4056 | // Make sure the names match |
4057 | if (src_name == dst_name || (strcmp(src_name, dst_name) == 0)) |
4058 | continue; |
4059 | |
4060 | if (log) |
4061 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
4062 | "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", |
4063 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
4064 | src_die.GetOffset(), src_name, dst_die.GetOffset(), |
4065 | dst_name); |
4066 | |
4067 | fast_path = false; |
4068 | } |
4069 | } |
4070 | |
4071 | DWARFASTParserClang *src_dwarf_ast_parser = |
4072 | (DWARFASTParserClang *)src_die.GetDWARFParser(); |
4073 | DWARFASTParserClang *dst_dwarf_ast_parser = |
4074 | (DWARFASTParserClang *)dst_die.GetDWARFParser(); |
4075 | |
4076 | // Now do the work of linking the DeclContexts and Types. |
4077 | if (fast_path) { |
4078 | // We can do this quickly. Just run across the tables index-for-index |
4079 | // since we know each node has matching names and tags. |
4080 | for (idx = 0; idx < src_size; ++idx) { |
4081 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
4082 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
4083 | |
4084 | clang::DeclContext *src_decl_ctx = |
4085 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
4086 | if (src_decl_ctx) { |
4087 | if (log) |
4088 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
4089 | static_cast<void *>(src_decl_ctx), src_die.GetOffset(), |
4090 | dst_die.GetOffset()); |
4091 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
4092 | } else { |
4093 | if (log) |
4094 | log->Printf("warning: tried to unique decl context from 0x%8.8x for " |
4095 | "0x%8.8x, but none was found", |
4096 | src_die.GetOffset(), dst_die.GetOffset()); |
4097 | } |
4098 | |
4099 | Type *src_child_type = |
4100 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
4101 | if (src_child_type) { |
4102 | if (log) |
4103 | log->Printf( |
4104 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
4105 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
4106 | src_die.GetOffset(), dst_die.GetOffset()); |
4107 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
4108 | } else { |
4109 | if (log) |
4110 | log->Printf("warning: tried to unique lldb_private::Type from " |
4111 | "0x%8.8x for 0x%8.8x, but none was found", |
4112 | src_die.GetOffset(), dst_die.GetOffset()); |
4113 | } |
4114 | } |
4115 | } else { |
4116 | // We must do this slowly. For each member of the destination, look up a |
4117 | // member in the source with the same name, check its tag, and unique them |
4118 | // if everything matches up. Report failures. |
4119 | |
4120 | if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) { |
4121 | src_name_to_die.Sort(); |
4122 | |
4123 | for (idx = 0; idx < dst_size; ++idx) { |
4124 | ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx); |
4125 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
4126 | src_die = src_name_to_die.Find(dst_name, DWARFDIE()); |
4127 | |
4128 | if (src_die && (src_die.Tag() == dst_die.Tag())) { |
4129 | clang::DeclContext *src_decl_ctx = |
4130 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
4131 | if (src_decl_ctx) { |
4132 | if (log) |
4133 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
4134 | static_cast<void *>(src_decl_ctx), |
4135 | src_die.GetOffset(), dst_die.GetOffset()); |
4136 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
4137 | } else { |
4138 | if (log) |
4139 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
4140 | "for 0x%8.8x, but none was found", |
4141 | src_die.GetOffset(), dst_die.GetOffset()); |
4142 | } |
4143 | |
4144 | Type *src_child_type = |
4145 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
4146 | if (src_child_type) { |
4147 | if (log) |
4148 | log->Printf("uniquing type %p (uid=0x%" PRIx64"l" "x" |
4149 | ") from 0x%8.8x for 0x%8.8x", |
4150 | static_cast<void *>(src_child_type), |
4151 | src_child_type->GetID(), src_die.GetOffset(), |
4152 | dst_die.GetOffset()); |
4153 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = |
4154 | src_child_type; |
4155 | } else { |
4156 | if (log) |
4157 | log->Printf("warning: tried to unique lldb_private::Type from " |
4158 | "0x%8.8x for 0x%8.8x, but none was found", |
4159 | src_die.GetOffset(), dst_die.GetOffset()); |
4160 | } |
4161 | } else { |
4162 | if (log) |
4163 | log->Printf("warning: couldn't find a match for 0x%8.8x", |
4164 | dst_die.GetOffset()); |
4165 | |
4166 | failures.Append(dst_die); |
4167 | } |
4168 | } |
4169 | } |
4170 | } |
4171 | |
4172 | const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize(); |
4173 | const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize(); |
4174 | |
4175 | if (src_size_artificial && dst_size_artificial) { |
4176 | dst_name_to_die_artificial.Sort(); |
4177 | |
4178 | for (idx = 0; idx < src_size_artificial; ++idx) { |
4179 | ConstString src_name_artificial = |
4180 | src_name_to_die_artificial.GetCStringAtIndex(idx); |
4181 | src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
4182 | dst_die = |
4183 | dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); |
4184 | |
4185 | if (dst_die) { |
4186 | // Both classes have the artificial types, link them |
4187 | clang::DeclContext *src_decl_ctx = |
4188 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
4189 | if (src_decl_ctx) { |
4190 | if (log) |
4191 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
4192 | static_cast<void *>(src_decl_ctx), src_die.GetOffset(), |
4193 | dst_die.GetOffset()); |
4194 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
4195 | } else { |
4196 | if (log) |
4197 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
4198 | "for 0x%8.8x, but none was found", |
4199 | src_die.GetOffset(), dst_die.GetOffset()); |
4200 | } |
4201 | |
4202 | Type *src_child_type = |
4203 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
4204 | if (src_child_type) { |
4205 | if (log) |
4206 | log->Printf( |
4207 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
4208 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
4209 | src_die.GetOffset(), dst_die.GetOffset()); |
4210 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
4211 | } else { |
4212 | if (log) |
4213 | log->Printf("warning: tried to unique lldb_private::Type from " |
4214 | "0x%8.8x for 0x%8.8x, but none was found", |
4215 | src_die.GetOffset(), dst_die.GetOffset()); |
4216 | } |
4217 | } |
4218 | } |
4219 | } |
4220 | |
4221 | if (dst_size_artificial) { |
4222 | for (idx = 0; idx < dst_size_artificial; ++idx) { |
4223 | ConstString dst_name_artificial = |
4224 | dst_name_to_die_artificial.GetCStringAtIndex(idx); |
4225 | dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
4226 | if (log) |
4227 | log->Printf("warning: need to create artificial method for 0x%8.8x for " |
4228 | "method '%s'", |
4229 | dst_die.GetOffset(), dst_name_artificial.GetCString()); |
4230 | |
4231 | failures.Append(dst_die); |
4232 | } |
4233 | } |
4234 | |
4235 | return (failures.Size() != 0); |
4236 | } |