File: | tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp |
Warning: | line 1400, 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 | |
45 | #include <map> |
46 | #include <vector> |
47 | |
48 | //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN |
49 | |
50 | #ifdef ENABLE_DEBUG_PRINTF |
51 | #include <stdio.h> |
52 | #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) |
53 | #else |
54 | #define DEBUG_PRINTF(fmt, ...) |
55 | #endif |
56 | |
57 | using namespace lldb; |
58 | using namespace lldb_private; |
59 | DWARFASTParserClang::DWARFASTParserClang(ClangASTContext &ast) |
60 | : m_ast(ast), m_die_to_decl_ctx(), m_decl_ctx_to_die() {} |
61 | |
62 | DWARFASTParserClang::~DWARFASTParserClang() {} |
63 | |
64 | static AccessType DW_ACCESS_to_AccessType(uint32_t dwarf_accessibility) { |
65 | switch (dwarf_accessibility) { |
66 | case DW_ACCESS_public: |
67 | return eAccessPublic; |
68 | case DW_ACCESS_private: |
69 | return eAccessPrivate; |
70 | case DW_ACCESS_protected: |
71 | return eAccessProtected; |
72 | default: |
73 | break; |
74 | } |
75 | return eAccessNone; |
76 | } |
77 | |
78 | static bool DeclKindIsCXXClass(clang::Decl::Kind decl_kind) { |
79 | switch (decl_kind) { |
80 | case clang::Decl::CXXRecord: |
81 | case clang::Decl::ClassTemplateSpecialization: |
82 | return true; |
83 | default: |
84 | break; |
85 | } |
86 | return false; |
87 | } |
88 | |
89 | struct BitfieldInfo { |
90 | uint64_t bit_size; |
91 | uint64_t bit_offset; |
92 | |
93 | BitfieldInfo() |
94 | : bit_size(LLDB_INVALID_ADDRESS(18446744073709551615UL)), bit_offset(LLDB_INVALID_ADDRESS(18446744073709551615UL)) {} |
95 | |
96 | void Clear() { |
97 | bit_size = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
98 | bit_offset = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
99 | } |
100 | |
101 | bool IsValid() const { |
102 | return (bit_size != LLDB_INVALID_ADDRESS(18446744073709551615UL)) && |
103 | (bit_offset != LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
104 | } |
105 | |
106 | bool NextBitfieldOffsetIsValid(const uint64_t next_bit_offset) const { |
107 | if (IsValid()) { |
108 | // This bitfield info is valid, so any subsequent bitfields |
109 | // must not overlap and must be at a higher bit offset than |
110 | // any previous bitfield + size. |
111 | return (bit_size + bit_offset) <= next_bit_offset; |
112 | } else { |
113 | // If the this BitfieldInfo is not valid, then any offset isOK |
114 | return true; |
115 | } |
116 | } |
117 | }; |
118 | |
119 | ClangASTImporter &DWARFASTParserClang::GetClangASTImporter() { |
120 | if (!m_clang_ast_importer_ap) { |
121 | m_clang_ast_importer_ap.reset(new ClangASTImporter); |
122 | } |
123 | return *m_clang_ast_importer_ap; |
124 | } |
125 | |
126 | /// Detect a forward declaration that is nested in a DW_TAG_module. |
127 | static bool isClangModuleFwdDecl(const DWARFDIE &Die) { |
128 | if (!Die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0)) |
129 | return false; |
130 | auto Parent = Die.GetParent(); |
131 | while (Parent.IsValid()) { |
132 | if (Parent.Tag() == DW_TAG_module) |
133 | return true; |
134 | Parent = Parent.GetParent(); |
135 | } |
136 | return false; |
137 | } |
138 | |
139 | TypeSP DWARFASTParserClang::ParseTypeFromDWO(const DWARFDIE &die, Log *log) { |
140 | ModuleSP dwo_module_sp = die.GetContainingDWOModule(); |
141 | if (!dwo_module_sp) |
142 | return TypeSP(); |
143 | |
144 | // This type comes from an external DWO module. |
145 | std::vector<CompilerContext> dwo_context; |
146 | die.GetDWOContext(dwo_context); |
147 | TypeMap dwo_types; |
148 | |
149 | if (!dwo_module_sp->GetSymbolVendor()->FindTypes(dwo_context, true, |
150 | dwo_types)) { |
151 | if (!isClangModuleFwdDecl(die)) |
152 | return TypeSP(); |
153 | |
154 | // Since this this type is defined in one of the Clang modules |
155 | // imported by this symbol file, search all of them. |
156 | auto *SymFile = die.GetCU()->GetSymbolFileDWARF(); |
157 | for (const auto &NameModule : SymFile->getExternalTypeModules()) { |
158 | if (!NameModule.second) |
159 | continue; |
160 | SymbolVendor *SymVendor = NameModule.second->GetSymbolVendor(); |
161 | if (SymVendor->FindTypes(dwo_context, true, dwo_types)) |
162 | break; |
163 | } |
164 | } |
165 | |
166 | const size_t num_dwo_types = dwo_types.GetSize(); |
167 | if (num_dwo_types != 1) |
168 | return TypeSP(); |
169 | |
170 | // We found a real definition for this type in the Clang module, so |
171 | // lets use it and cache the fact that we found a complete type for |
172 | // 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 | // printf ("copied_qual_type: ast = %p, clang_type = %p, name = |
183 | // '%s'\n", m_ast, copied_qual_type.getAsOpaquePtr(), |
184 | // external_type->GetName().GetCString()); |
185 | if (!type) |
186 | return TypeSP(); |
187 | |
188 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
189 | TypeSP type_sp(new Type( |
190 | die.GetID(), dwarf, dwo_type_sp->GetName(), dwo_type_sp->GetByteSize(), |
191 | NULL__null, LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingInvalid, |
192 | &dwo_type_sp->GetDeclaration(), type, Type::eResolveStateForward)); |
193 | |
194 | dwarf->GetTypeList()->Insert(type_sp); |
195 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
196 | clang::TagDecl *tag_decl = ClangASTContext::GetAsTagDecl(type); |
197 | if (tag_decl) |
198 | LinkDeclContextToDIE(tag_decl, die); |
199 | else { |
200 | clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(die); |
201 | if (defn_decl_ctx) |
202 | LinkDeclContextToDIE(defn_decl_ctx, die); |
203 | } |
204 | |
205 | return type_sp; |
206 | } |
207 | |
208 | TypeSP DWARFASTParserClang::ParseTypeFromDWARF(const SymbolContext &sc, |
209 | const DWARFDIE &die, Log *log, |
210 | bool *type_is_new_ptr) { |
211 | TypeSP type_sp; |
212 | |
213 | if (type_is_new_ptr) |
214 | *type_is_new_ptr = false; |
215 | |
216 | AccessType accessibility = eAccessNone; |
217 | if (die) { |
218 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
219 | if (log) { |
220 | DWARFDIE context_die; |
221 | clang::DeclContext *context = |
222 | GetClangDeclContextContainingDIE(die, &context_die); |
223 | |
224 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
225 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die " |
226 | "0x%8.8x)) %s name = '%s')", |
227 | die.GetOffset(), static_cast<void *>(context), |
228 | context_die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
229 | } |
230 | // |
231 | // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
232 | // if (log && dwarf_cu) |
233 | // { |
234 | // StreamString s; |
235 | // die->DumpLocation (this, dwarf_cu, s); |
236 | // dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
237 | // "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); |
238 | // |
239 | // } |
240 | |
241 | Type *type_ptr = dwarf->GetDIEToType().lookup(die.GetDIE()); |
242 | TypeList *type_list = dwarf->GetTypeList(); |
243 | if (type_ptr == NULL__null) { |
244 | if (type_is_new_ptr) |
245 | *type_is_new_ptr = true; |
246 | |
247 | const dw_tag_t tag = die.Tag(); |
248 | |
249 | bool is_forward_declaration = false; |
250 | DWARFAttributes attributes; |
251 | const char *type_name_cstr = NULL__null; |
252 | ConstString type_name_const_str; |
253 | Type::ResolveState resolve_state = Type::eResolveStateUnresolved; |
254 | uint64_t byte_size = 0; |
255 | Declaration decl; |
256 | |
257 | Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; |
258 | CompilerType clang_type; |
259 | DWARFFormValue form_value; |
260 | |
261 | dw_attr_t attr; |
262 | |
263 | switch (tag) { |
264 | case DW_TAG_typedef: |
265 | case DW_TAG_base_type: |
266 | case DW_TAG_pointer_type: |
267 | case DW_TAG_reference_type: |
268 | case DW_TAG_rvalue_reference_type: |
269 | case DW_TAG_const_type: |
270 | case DW_TAG_restrict_type: |
271 | case DW_TAG_volatile_type: |
272 | case DW_TAG_unspecified_type: { |
273 | // Set a bit that lets us know that we are currently parsing this |
274 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
275 | |
276 | const size_t num_attributes = die.GetAttributes(attributes); |
277 | uint32_t encoding = 0; |
278 | DWARFFormValue encoding_uid; |
279 | |
280 | if (num_attributes > 0) { |
281 | uint32_t i; |
282 | for (i = 0; i < num_attributes; ++i) { |
283 | attr = attributes.AttributeAtIndex(i); |
284 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
285 | switch (attr) { |
286 | case DW_AT_decl_file: |
287 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
288 | form_value.Unsigned())); |
289 | break; |
290 | case DW_AT_decl_line: |
291 | decl.SetLine(form_value.Unsigned()); |
292 | break; |
293 | case DW_AT_decl_column: |
294 | decl.SetColumn(form_value.Unsigned()); |
295 | break; |
296 | case DW_AT_name: |
297 | |
298 | type_name_cstr = form_value.AsCString(); |
299 | // Work around a bug in llvm-gcc where they give a name to a |
300 | // reference type which doesn't |
301 | // include the "&"... |
302 | if (tag == DW_TAG_reference_type) { |
303 | if (strchr(type_name_cstr, '&') == NULL__null) |
304 | type_name_cstr = NULL__null; |
305 | } |
306 | if (type_name_cstr) |
307 | type_name_const_str.SetCString(type_name_cstr); |
308 | break; |
309 | case DW_AT_byte_size: |
310 | byte_size = form_value.Unsigned(); |
311 | break; |
312 | case DW_AT_encoding: |
313 | encoding = form_value.Unsigned(); |
314 | break; |
315 | case DW_AT_type: |
316 | encoding_uid = form_value; |
317 | break; |
318 | default: |
319 | case DW_AT_sibling: |
320 | break; |
321 | } |
322 | } |
323 | } |
324 | } |
325 | |
326 | if (tag == DW_TAG_typedef && encoding_uid.IsValid()) { |
327 | // Try to parse a typedef from the DWO file first as modules |
328 | // can contain typedef'ed structures that have no names like: |
329 | // |
330 | // typedef struct { int a; } Foo; |
331 | // |
332 | // In this case we will have a structure with no name and a |
333 | // typedef named "Foo" that points to this unnamed structure. |
334 | // The name in the typedef is the only identifier for the struct, |
335 | // so always try to get typedefs from DWO files if possible. |
336 | // |
337 | // The type_sp returned will be empty if the typedef doesn't exist |
338 | // in a DWO file, so it is cheap to call this function just to check. |
339 | // |
340 | // If we don't do this we end up creating a TypeSP that says this |
341 | // is a typedef to type 0x123 (the DW_AT_type value would be 0x123 |
342 | // in the DW_TAG_typedef), and this is the unnamed structure type. |
343 | // We will have a hard time tracking down an unnammed structure |
344 | // type in the module DWO file, so we make sure we don't get into |
345 | // this situation by always resolving typedefs from the DWO file. |
346 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
347 | |
348 | // First make sure that the die that this is typedef'ed to _is_ |
349 | // just a declaration (DW_AT_declaration == 1), not a full definition |
350 | // since template types can't be represented in modules since only |
351 | // concrete instances of templates are ever emitted and modules |
352 | // won't contain those |
353 | if (encoding_die && |
354 | encoding_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == |
355 | 1) { |
356 | type_sp = ParseTypeFromDWO(die, log); |
357 | if (type_sp) |
358 | return type_sp; |
359 | } |
360 | } |
361 | |
362 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", |
363 | die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, |
364 | encoding_uid.Reference()); |
365 | |
366 | switch (tag) { |
367 | default: |
368 | break; |
369 | |
370 | case DW_TAG_unspecified_type: |
371 | if (strcmp(type_name_cstr, "nullptr_t") == 0 || |
372 | strcmp(type_name_cstr, "decltype(nullptr)") == 0) { |
373 | resolve_state = Type::eResolveStateFull; |
374 | clang_type = m_ast.GetBasicType(eBasicTypeNullPtr); |
375 | break; |
376 | } |
377 | // Fall through to base type below in case we can handle the type |
378 | // there... |
379 | LLVM_FALLTHROUGH[[clang::fallthrough]]; |
380 | |
381 | case DW_TAG_base_type: |
382 | resolve_state = Type::eResolveStateFull; |
383 | clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
384 | type_name_cstr, encoding, byte_size * 8); |
385 | break; |
386 | |
387 | case DW_TAG_pointer_type: |
388 | encoding_data_type = Type::eEncodingIsPointerUID; |
389 | break; |
390 | case DW_TAG_reference_type: |
391 | encoding_data_type = Type::eEncodingIsLValueReferenceUID; |
392 | break; |
393 | case DW_TAG_rvalue_reference_type: |
394 | encoding_data_type = Type::eEncodingIsRValueReferenceUID; |
395 | break; |
396 | case DW_TAG_typedef: |
397 | encoding_data_type = Type::eEncodingIsTypedefUID; |
398 | break; |
399 | case DW_TAG_const_type: |
400 | encoding_data_type = Type::eEncodingIsConstUID; |
401 | break; |
402 | case DW_TAG_restrict_type: |
403 | encoding_data_type = Type::eEncodingIsRestrictUID; |
404 | break; |
405 | case DW_TAG_volatile_type: |
406 | encoding_data_type = Type::eEncodingIsVolatileUID; |
407 | break; |
408 | } |
409 | |
410 | if (!clang_type && |
411 | (encoding_data_type == Type::eEncodingIsPointerUID || |
412 | encoding_data_type == Type::eEncodingIsTypedefUID) && |
413 | sc.comp_unit != NULL__null) { |
414 | if (tag == DW_TAG_pointer_type) { |
415 | DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type); |
416 | |
417 | if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0)) { |
418 | // Blocks have a __FuncPtr inside them which is a pointer to a |
419 | // function of the proper type. |
420 | |
421 | for (DWARFDIE child_die = target_die.GetFirstChild(); |
422 | child_die.IsValid(); child_die = child_die.GetSibling()) { |
423 | if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""), |
424 | "__FuncPtr")) { |
425 | DWARFDIE function_pointer_type = |
426 | child_die.GetReferencedDIE(DW_AT_type); |
427 | |
428 | if (function_pointer_type) { |
429 | DWARFDIE function_type = |
430 | function_pointer_type.GetReferencedDIE(DW_AT_type); |
431 | |
432 | bool function_type_is_new_pointer; |
433 | TypeSP lldb_function_type_sp = ParseTypeFromDWARF( |
434 | sc, function_type, log, &function_type_is_new_pointer); |
435 | |
436 | if (lldb_function_type_sp) { |
437 | clang_type = m_ast.CreateBlockPointerType( |
438 | lldb_function_type_sp->GetForwardCompilerType()); |
439 | encoding_data_type = Type::eEncodingIsUID; |
440 | encoding_uid.Clear(); |
441 | resolve_state = Type::eResolveStateFull; |
442 | } |
443 | } |
444 | |
445 | break; |
446 | } |
447 | } |
448 | } |
449 | } |
450 | |
451 | bool translation_unit_is_objc = |
452 | (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || |
453 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); |
454 | |
455 | if (translation_unit_is_objc) { |
456 | if (type_name_cstr != NULL__null) { |
457 | static ConstString g_objc_type_name_id("id"); |
458 | static ConstString g_objc_type_name_Class("Class"); |
459 | static ConstString g_objc_type_name_selector("SEL"); |
460 | |
461 | if (type_name_const_str == g_objc_type_name_id) { |
462 | if (log) |
463 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
464 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
465 | "is Objective C 'id' built-in type.", |
466 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
467 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
468 | encoding_data_type = Type::eEncodingIsUID; |
469 | encoding_uid.Clear(); |
470 | resolve_state = Type::eResolveStateFull; |
471 | |
472 | } else if (type_name_const_str == g_objc_type_name_Class) { |
473 | if (log) |
474 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
475 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
476 | "is Objective C 'Class' built-in type.", |
477 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
478 | clang_type = m_ast.GetBasicType(eBasicTypeObjCClass); |
479 | encoding_data_type = Type::eEncodingIsUID; |
480 | encoding_uid.Clear(); |
481 | resolve_state = Type::eResolveStateFull; |
482 | } else if (type_name_const_str == g_objc_type_name_selector) { |
483 | if (log) |
484 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
485 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
486 | "is Objective C 'selector' built-in type.", |
487 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
488 | clang_type = m_ast.GetBasicType(eBasicTypeObjCSel); |
489 | encoding_data_type = Type::eEncodingIsUID; |
490 | encoding_uid.Clear(); |
491 | resolve_state = Type::eResolveStateFull; |
492 | } |
493 | } else if (encoding_data_type == Type::eEncodingIsPointerUID && |
494 | encoding_uid.IsValid()) { |
495 | // Clang sometimes erroneously emits id as objc_object*. In that |
496 | // case we fix up the type to "id". |
497 | |
498 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
499 | |
500 | if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) { |
501 | if (const char *struct_name = encoding_die.GetName()) { |
502 | if (!strcmp(struct_name, "objc_object")) { |
503 | if (log) |
504 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
505 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s " |
506 | "'%s' is 'objc_object*', which we overrode to " |
507 | "'id'.", |
508 | die.GetOffset(), die.GetTagAsCString(), |
509 | die.GetName()); |
510 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
511 | encoding_data_type = Type::eEncodingIsUID; |
512 | encoding_uid.Clear(); |
513 | resolve_state = Type::eResolveStateFull; |
514 | } |
515 | } |
516 | } |
517 | } |
518 | } |
519 | } |
520 | |
521 | type_sp.reset( |
522 | new Type(die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
523 | DIERef(encoding_uid).GetUID(dwarf), encoding_data_type, |
524 | &decl, clang_type, resolve_state)); |
525 | |
526 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
527 | |
528 | // Type* encoding_type = |
529 | // GetUniquedTypeForDIEOffset(encoding_uid, type_sp, |
530 | // NULL, 0, 0, false); |
531 | // if (encoding_type != NULL) |
532 | // { |
533 | // if (encoding_type != DIE_IS_BEING_PARSED) |
534 | // type_sp->SetEncodingType(encoding_type); |
535 | // else |
536 | // m_indirect_fixups.push_back(type_sp.get()); |
537 | // } |
538 | } break; |
539 | |
540 | case DW_TAG_structure_type: |
541 | case DW_TAG_union_type: |
542 | case DW_TAG_class_type: { |
543 | // Set a bit that lets us know that we are currently parsing this |
544 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
545 | bool byte_size_valid = false; |
546 | |
547 | LanguageType class_language = eLanguageTypeUnknown; |
548 | bool is_complete_objc_class = false; |
549 | // bool struct_is_class = false; |
550 | const size_t num_attributes = die.GetAttributes(attributes); |
551 | if (num_attributes > 0) { |
552 | uint32_t i; |
553 | for (i = 0; i < num_attributes; ++i) { |
554 | attr = attributes.AttributeAtIndex(i); |
555 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
556 | switch (attr) { |
557 | case DW_AT_decl_file: |
558 | if (die.GetCU()->DW_AT_decl_file_attributes_are_invalid()) { |
559 | // llvm-gcc outputs invalid DW_AT_decl_file attributes that |
560 | // always |
561 | // point to the compile unit file, so we clear this invalid |
562 | // value |
563 | // so that we can still unique types efficiently. |
564 | decl.SetFile(FileSpec("<invalid>", false)); |
565 | } else |
566 | decl.SetFile( |
567 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
568 | form_value.Unsigned())); |
569 | break; |
570 | |
571 | case DW_AT_decl_line: |
572 | decl.SetLine(form_value.Unsigned()); |
573 | break; |
574 | |
575 | case DW_AT_decl_column: |
576 | decl.SetColumn(form_value.Unsigned()); |
577 | break; |
578 | |
579 | case DW_AT_name: |
580 | type_name_cstr = form_value.AsCString(); |
581 | type_name_const_str.SetCString(type_name_cstr); |
582 | break; |
583 | |
584 | case DW_AT_byte_size: |
585 | byte_size = form_value.Unsigned(); |
586 | byte_size_valid = true; |
587 | break; |
588 | |
589 | case DW_AT_accessibility: |
590 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
591 | break; |
592 | |
593 | case DW_AT_declaration: |
594 | is_forward_declaration = form_value.Boolean(); |
595 | break; |
596 | |
597 | case DW_AT_APPLE_runtime_class: |
598 | class_language = (LanguageType)form_value.Signed(); |
599 | break; |
600 | |
601 | case DW_AT_APPLE_objc_complete_type: |
602 | is_complete_objc_class = form_value.Signed(); |
603 | break; |
604 | |
605 | case DW_AT_allocated: |
606 | case DW_AT_associated: |
607 | case DW_AT_data_location: |
608 | case DW_AT_description: |
609 | case DW_AT_start_scope: |
610 | case DW_AT_visibility: |
611 | default: |
612 | case DW_AT_sibling: |
613 | break; |
614 | } |
615 | } |
616 | } |
617 | } |
618 | |
619 | // UniqueDWARFASTType is large, so don't create a local variables on the |
620 | // stack, put it on the heap. This function is often called recursively |
621 | // and clang isn't good and sharing the stack space for variables in |
622 | // different blocks. |
623 | std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap( |
624 | new UniqueDWARFASTType()); |
625 | |
626 | ConstString unique_typename(type_name_const_str); |
627 | Declaration unique_decl(decl); |
628 | |
629 | if (type_name_const_str) { |
630 | LanguageType die_language = die.GetLanguage(); |
631 | if (Language::LanguageIsCPlusPlus(die_language)) { |
632 | // For C++, we rely solely upon the one definition rule that says |
633 | // only |
634 | // one thing can exist at a given decl context. We ignore the file |
635 | // and |
636 | // line that things are declared on. |
637 | std::string qualified_name; |
638 | if (die.GetQualifiedName(qualified_name)) |
639 | unique_typename = ConstString(qualified_name); |
640 | unique_decl.Clear(); |
641 | } |
642 | |
643 | if (dwarf->GetUniqueDWARFASTTypeMap().Find( |
644 | unique_typename, die, unique_decl, |
645 | byte_size_valid ? byte_size : -1, *unique_ast_entry_ap)) { |
646 | type_sp = unique_ast_entry_ap->m_type_sp; |
647 | if (type_sp) { |
648 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
649 | return type_sp; |
650 | } |
651 | } |
652 | } |
653 | |
654 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
655 | DW_TAG_value_to_name(tag), type_name_cstr); |
656 | |
657 | int tag_decl_kind = -1; |
658 | AccessType default_accessibility = eAccessNone; |
659 | if (tag == DW_TAG_structure_type) { |
660 | tag_decl_kind = clang::TTK_Struct; |
661 | default_accessibility = eAccessPublic; |
662 | } else if (tag == DW_TAG_union_type) { |
663 | tag_decl_kind = clang::TTK_Union; |
664 | default_accessibility = eAccessPublic; |
665 | } else if (tag == DW_TAG_class_type) { |
666 | tag_decl_kind = clang::TTK_Class; |
667 | default_accessibility = eAccessPrivate; |
668 | } |
669 | |
670 | if (byte_size_valid && byte_size == 0 && type_name_cstr && |
671 | die.HasChildren() == false && |
672 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC) { |
673 | // Work around an issue with clang at the moment where |
674 | // forward declarations for objective C classes are emitted |
675 | // as: |
676 | // DW_TAG_structure_type [2] |
677 | // DW_AT_name( "ForwardObjcClass" ) |
678 | // DW_AT_byte_size( 0x00 ) |
679 | // DW_AT_decl_file( "..." ) |
680 | // DW_AT_decl_line( 1 ) |
681 | // |
682 | // Note that there is no DW_AT_declaration and there are |
683 | // no children, and the byte size is zero. |
684 | is_forward_declaration = true; |
685 | } |
686 | |
687 | if (class_language == eLanguageTypeObjC || |
688 | class_language == eLanguageTypeObjC_plus_plus) { |
689 | if (!is_complete_objc_class && |
690 | die.Supports_DW_AT_APPLE_objc_complete_type()) { |
691 | // We have a valid eSymbolTypeObjCClass class symbol whose |
692 | // name matches the current objective C class that we |
693 | // are trying to find and this DIE isn't the complete |
694 | // definition (we checked is_complete_objc_class above and |
695 | // know it is false), so the real definition is in here somewhere |
696 | type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE( |
697 | die, type_name_const_str, true); |
698 | |
699 | if (!type_sp) { |
700 | SymbolFileDWARFDebugMap *debug_map_symfile = |
701 | dwarf->GetDebugMapSymfile(); |
702 | if (debug_map_symfile) { |
703 | // We weren't able to find a full declaration in |
704 | // this DWARF, see if we have a declaration anywhere |
705 | // else... |
706 | type_sp = |
707 | debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE( |
708 | die, type_name_const_str, true); |
709 | } |
710 | } |
711 | |
712 | if (type_sp) { |
713 | if (log) { |
714 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
715 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an " |
716 | "incomplete objc type, complete type is 0x%8.8" PRIx64"l" "x", |
717 | static_cast<void *>(this), die.GetOffset(), |
718 | DW_TAG_value_to_name(tag), type_name_cstr, |
719 | type_sp->GetID()); |
720 | } |
721 | |
722 | // We found a real definition for this type elsewhere |
723 | // so lets use it and cache the fact that we found |
724 | // a complete type for this die |
725 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
726 | return type_sp; |
727 | } |
728 | } |
729 | } |
730 | |
731 | if (is_forward_declaration) { |
732 | // We have a forward declaration to a type and we need |
733 | // to try and find a full declaration. We look in the |
734 | // current type index just in case we have a forward |
735 | // declaration followed by an actual declarations in the |
736 | // DWARF. If this fails, we need to look elsewhere... |
737 | if (log) { |
738 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
739 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
740 | "forward declaration, trying to find complete type", |
741 | static_cast<void *>(this), die.GetOffset(), |
742 | DW_TAG_value_to_name(tag), type_name_cstr); |
743 | } |
744 | |
745 | // See if the type comes from a DWO module and if so, track down that |
746 | // type. |
747 | type_sp = ParseTypeFromDWO(die, log); |
748 | if (type_sp) |
749 | return type_sp; |
750 | |
751 | DWARFDeclContext die_decl_ctx; |
752 | die.GetDWARFDeclContext(die_decl_ctx); |
753 | |
754 | // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, |
755 | // type_name_const_str); |
756 | type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
757 | |
758 | if (!type_sp) { |
759 | SymbolFileDWARFDebugMap *debug_map_symfile = |
760 | dwarf->GetDebugMapSymfile(); |
761 | if (debug_map_symfile) { |
762 | // We weren't able to find a full declaration in |
763 | // this DWARF, see if we have a declaration anywhere |
764 | // 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 |
781 | // so lets use it and cache the fact that we found |
782 | // a complete type for this die |
783 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
784 | clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE( |
785 | dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf))); |
786 | if (defn_decl_ctx) |
787 | LinkDeclContextToDIE(defn_decl_ctx, die); |
788 | return type_sp; |
789 | } |
790 | } |
791 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 791, __extension__ __PRETTY_FUNCTION__)); |
792 | bool clang_type_was_created = false; |
793 | clang_type.SetCompilerType( |
794 | &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
795 | if (!clang_type) { |
796 | clang::DeclContext *decl_ctx = |
797 | GetClangDeclContextContainingDIE(die, nullptr); |
798 | if (accessibility == eAccessNone && decl_ctx) { |
799 | // Check the decl context that contains this class/struct/union. |
800 | // If it is a class we must give it an accessibility. |
801 | const clang::Decl::Kind containing_decl_kind = |
802 | decl_ctx->getDeclKind(); |
803 | if (DeclKindIsCXXClass(containing_decl_kind)) |
804 | accessibility = default_accessibility; |
805 | } |
806 | |
807 | ClangASTMetadata metadata; |
808 | metadata.SetUserID(die.GetID()); |
809 | metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die)); |
810 | |
811 | if (type_name_cstr && strchr(type_name_cstr, '<')) { |
812 | ClangASTContext::TemplateParameterInfos template_param_infos; |
813 | if (ParseTemplateParameterInfos(die, template_param_infos)) { |
814 | clang::ClassTemplateDecl *class_template_decl = |
815 | m_ast.ParseClassTemplateDecl(decl_ctx, accessibility, |
816 | type_name_cstr, tag_decl_kind, |
817 | template_param_infos); |
818 | if (!class_template_decl) { |
819 | if (log) { |
820 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
821 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" " |
822 | "clang::ClassTemplateDecl failed to return a decl.", |
823 | static_cast<void *>(this), die.GetOffset(), |
824 | DW_TAG_value_to_name(tag), type_name_cstr); |
825 | } |
826 | return TypeSP(); |
827 | } |
828 | |
829 | clang::ClassTemplateSpecializationDecl |
830 | *class_specialization_decl = |
831 | m_ast.CreateClassTemplateSpecializationDecl( |
832 | decl_ctx, class_template_decl, tag_decl_kind, |
833 | template_param_infos); |
834 | clang_type = m_ast.CreateClassTemplateSpecializationType( |
835 | class_specialization_decl); |
836 | clang_type_was_created = true; |
837 | |
838 | m_ast.SetMetadata(class_template_decl, metadata); |
839 | m_ast.SetMetadata(class_specialization_decl, metadata); |
840 | } |
841 | } |
842 | |
843 | if (!clang_type_was_created) { |
844 | clang_type_was_created = true; |
845 | clang_type = m_ast.CreateRecordType(decl_ctx, accessibility, |
846 | type_name_cstr, tag_decl_kind, |
847 | class_language, &metadata); |
848 | } |
849 | } |
850 | |
851 | // Store a forward declaration to this class type in case any |
852 | // parameters in any class methods need it for the clang |
853 | // types for function prototypes. |
854 | LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die); |
855 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
856 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
857 | Type::eEncodingIsUID, &decl, clang_type, |
858 | Type::eResolveStateForward)); |
859 | |
860 | type_sp->SetIsCompleteObjCClass(is_complete_objc_class); |
861 | |
862 | // Add our type to the unique type map so we don't |
863 | // end up creating many copies of the same type over |
864 | // and over in the ASTContext for our module |
865 | unique_ast_entry_ap->m_type_sp = type_sp; |
866 | unique_ast_entry_ap->m_die = die; |
867 | unique_ast_entry_ap->m_declaration = unique_decl; |
868 | unique_ast_entry_ap->m_byte_size = byte_size; |
869 | dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename, |
870 | *unique_ast_entry_ap); |
871 | |
872 | if (is_forward_declaration && die.HasChildren()) { |
873 | // Check to see if the DIE actually has a definition, some version of |
874 | // GCC will |
875 | // emit DIEs with DW_AT_declaration set to true, but yet still have |
876 | // subprogram, |
877 | // members, or inheritance, so we can't trust it |
878 | DWARFDIE child_die = die.GetFirstChild(); |
879 | while (child_die) { |
880 | switch (child_die.Tag()) { |
881 | case DW_TAG_inheritance: |
882 | case DW_TAG_subprogram: |
883 | case DW_TAG_member: |
884 | case DW_TAG_APPLE_property: |
885 | case DW_TAG_class_type: |
886 | case DW_TAG_structure_type: |
887 | case DW_TAG_enumeration_type: |
888 | case DW_TAG_typedef: |
889 | case DW_TAG_union_type: |
890 | child_die.Clear(); |
891 | is_forward_declaration = false; |
892 | break; |
893 | default: |
894 | child_die = child_die.GetSibling(); |
895 | break; |
896 | } |
897 | } |
898 | } |
899 | |
900 | if (!is_forward_declaration) { |
901 | // Always start the definition for a class type so that |
902 | // if the class has child classes or types that require |
903 | // the class to be created for use as their decl contexts |
904 | // the class will be ready to accept these child definitions. |
905 | if (die.HasChildren() == false) { |
906 | // No children for this struct/union/class, lets finish it |
907 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
908 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
909 | } else { |
910 | dwarf->GetObjectFile()->GetModule()->ReportError( |
911 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
912 | "definition.\nPlease file a bug and attach the file at the " |
913 | "start of this error message", |
914 | die.GetOffset(), type_name_cstr); |
915 | } |
916 | |
917 | if (tag == DW_TAG_structure_type) // this only applies in C |
918 | { |
919 | clang::RecordDecl *record_decl = |
920 | ClangASTContext::GetAsRecordDecl(clang_type); |
921 | |
922 | if (record_decl) { |
923 | GetClangASTImporter().InsertRecordDecl( |
924 | record_decl, ClangASTImporter::LayoutInfo()); |
925 | } |
926 | } |
927 | } else if (clang_type_was_created) { |
928 | // Start the definition if the class is not objective C since |
929 | // the underlying decls respond to isCompleteDefinition(). Objective |
930 | // C decls don't respond to isCompleteDefinition() so we can't |
931 | // start the declaration definition right away. For C++ |
932 | // class/union/structs |
933 | // we want to start the definition in case the class is needed as |
934 | // the |
935 | // declaration context for a contained class or type without the |
936 | // need |
937 | // to complete that type.. |
938 | |
939 | if (class_language != eLanguageTypeObjC && |
940 | class_language != eLanguageTypeObjC_plus_plus) |
941 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
942 | |
943 | // Leave this as a forward declaration until we need |
944 | // to know the details of the type. lldb_private::Type |
945 | // will automatically call the SymbolFile virtual function |
946 | // "SymbolFileDWARF::CompleteType(Type *)" |
947 | // When the definition needs to be defined. |
948 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 951, __extension__ __PRETTY_FUNCTION__)) |
949 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 951, __extension__ __PRETTY_FUNCTION__)) |
950 | .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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 951, __extension__ __PRETTY_FUNCTION__)) |
951 | "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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 951, __extension__ __PRETTY_FUNCTION__)); |
952 | // Can't assume m_ast.GetSymbolFile() is actually a SymbolFileDWARF, |
953 | // it can be a |
954 | // SymbolFileDWARFDebugMap for Apple binaries. |
955 | dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] = |
956 | clang_type.GetOpaqueQualType(); |
957 | dwarf->GetForwardDeclClangTypeToDie() |
958 | [ClangUtil::RemoveFastQualifiers(clang_type) |
959 | .GetOpaqueQualType()] = die.GetDIERef(); |
960 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true); |
961 | } |
962 | } |
963 | } break; |
964 | |
965 | case DW_TAG_enumeration_type: { |
966 | // Set a bit that lets us know that we are currently parsing this |
967 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
968 | |
969 | bool is_scoped = false; |
970 | DWARFFormValue encoding_form; |
971 | |
972 | const size_t num_attributes = die.GetAttributes(attributes); |
973 | if (num_attributes > 0) { |
974 | uint32_t i; |
975 | |
976 | for (i = 0; i < num_attributes; ++i) { |
977 | attr = attributes.AttributeAtIndex(i); |
978 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
979 | switch (attr) { |
980 | case DW_AT_decl_file: |
981 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
982 | form_value.Unsigned())); |
983 | break; |
984 | case DW_AT_decl_line: |
985 | decl.SetLine(form_value.Unsigned()); |
986 | break; |
987 | case DW_AT_decl_column: |
988 | decl.SetColumn(form_value.Unsigned()); |
989 | break; |
990 | case DW_AT_name: |
991 | type_name_cstr = form_value.AsCString(); |
992 | type_name_const_str.SetCString(type_name_cstr); |
993 | break; |
994 | case DW_AT_type: |
995 | encoding_form = form_value; |
996 | break; |
997 | case DW_AT_byte_size: |
998 | byte_size = form_value.Unsigned(); |
999 | break; |
1000 | case DW_AT_accessibility: |
1001 | break; // accessibility = |
1002 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
1003 | case DW_AT_declaration: |
1004 | is_forward_declaration = form_value.Boolean(); |
1005 | break; |
1006 | case DW_AT_enum_class: |
1007 | is_scoped = form_value.Boolean(); |
1008 | break; |
1009 | case DW_AT_allocated: |
1010 | case DW_AT_associated: |
1011 | case DW_AT_bit_stride: |
1012 | case DW_AT_byte_stride: |
1013 | case DW_AT_data_location: |
1014 | case DW_AT_description: |
1015 | case DW_AT_start_scope: |
1016 | case DW_AT_visibility: |
1017 | case DW_AT_specification: |
1018 | case DW_AT_abstract_origin: |
1019 | case DW_AT_sibling: |
1020 | break; |
1021 | } |
1022 | } |
1023 | } |
1024 | |
1025 | if (is_forward_declaration) { |
1026 | type_sp = ParseTypeFromDWO(die, log); |
1027 | if (type_sp) |
1028 | return type_sp; |
1029 | |
1030 | DWARFDeclContext die_decl_ctx; |
1031 | die.GetDWARFDeclContext(die_decl_ctx); |
1032 | |
1033 | type_sp = |
1034 | dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
1035 | |
1036 | if (!type_sp) { |
1037 | SymbolFileDWARFDebugMap *debug_map_symfile = |
1038 | dwarf->GetDebugMapSymfile(); |
1039 | if (debug_map_symfile) { |
1040 | // We weren't able to find a full declaration in |
1041 | // this DWARF, see if we have a declaration anywhere |
1042 | // else... |
1043 | type_sp = |
1044 | debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( |
1045 | die_decl_ctx); |
1046 | } |
1047 | } |
1048 | |
1049 | if (type_sp) { |
1050 | if (log) { |
1051 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
1052 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
1053 | "forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
1054 | static_cast<void *>(this), die.GetOffset(), |
1055 | DW_TAG_value_to_name(tag), type_name_cstr, |
1056 | type_sp->GetID()); |
1057 | } |
1058 | |
1059 | // We found a real definition for this type elsewhere |
1060 | // so lets use it and cache the fact that we found |
1061 | // a complete type for this die |
1062 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
1063 | clang::DeclContext *defn_decl_ctx = |
1064 | GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE( |
1065 | DIERef(type_sp->GetID(), dwarf))); |
1066 | if (defn_decl_ctx) |
1067 | LinkDeclContextToDIE(defn_decl_ctx, die); |
1068 | return type_sp; |
1069 | } |
1070 | } |
1071 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1072 | DW_TAG_value_to_name(tag), type_name_cstr); |
1073 | |
1074 | CompilerType enumerator_clang_type; |
1075 | clang_type.SetCompilerType( |
1076 | &m_ast, |
1077 | dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
1078 | if (!clang_type) { |
1079 | if (encoding_form.IsValid()) { |
1080 | Type *enumerator_type = |
1081 | dwarf->ResolveTypeUID(DIERef(encoding_form)); |
1082 | if (enumerator_type) |
1083 | enumerator_clang_type = enumerator_type->GetFullCompilerType(); |
1084 | } |
1085 | |
1086 | if (!enumerator_clang_type) { |
1087 | if (byte_size > 0) { |
1088 | enumerator_clang_type = |
1089 | m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
1090 | NULL__null, DW_ATE_signed, byte_size * 8); |
1091 | } else { |
1092 | enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt); |
1093 | } |
1094 | } |
1095 | |
1096 | clang_type = m_ast.CreateEnumerationType( |
1097 | type_name_cstr, GetClangDeclContextContainingDIE(die, nullptr), |
1098 | decl, enumerator_clang_type, is_scoped); |
1099 | } else { |
1100 | enumerator_clang_type = |
1101 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()); |
1102 | } |
1103 | |
1104 | LinkDeclContextToDIE( |
1105 | ClangASTContext::GetDeclContextForType(clang_type), die); |
1106 | |
1107 | type_sp.reset(new Type( |
1108 | die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
1109 | DIERef(encoding_form).GetUID(dwarf), Type::eEncodingIsUID, &decl, |
1110 | clang_type, Type::eResolveStateForward)); |
1111 | |
1112 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
1113 | if (die.HasChildren()) { |
1114 | SymbolContext cu_sc(die.GetLLDBCompileUnit()); |
1115 | bool is_signed = false; |
1116 | enumerator_clang_type.IsIntegerType(is_signed); |
1117 | ParseChildEnumerators(cu_sc, clang_type, is_signed, |
1118 | type_sp->GetByteSize(), die); |
1119 | } |
1120 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
1121 | } else { |
1122 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1123 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
1124 | "definition.\nPlease file a bug and attach the file at the " |
1125 | "start of this error message", |
1126 | die.GetOffset(), type_name_cstr); |
1127 | } |
1128 | } |
1129 | } break; |
1130 | |
1131 | case DW_TAG_inlined_subroutine: |
1132 | case DW_TAG_subprogram: |
1133 | case DW_TAG_subroutine_type: { |
1134 | // Set a bit that lets us know that we are currently parsing this |
1135 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
1136 | |
1137 | DWARFFormValue type_die_form; |
1138 | bool is_variadic = false; |
1139 | bool is_inline = false; |
1140 | bool is_static = false; |
1141 | bool is_virtual = false; |
1142 | bool is_explicit = false; |
1143 | bool is_artificial = false; |
1144 | bool has_template_params = false; |
1145 | DWARFFormValue specification_die_form; |
1146 | DWARFFormValue abstract_origin_die_form; |
1147 | dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
1148 | |
1149 | unsigned type_quals = 0; |
1150 | clang::StorageClass storage = |
1151 | clang::SC_None; //, Extern, Static, PrivateExtern |
1152 | |
1153 | const size_t num_attributes = die.GetAttributes(attributes); |
1154 | if (num_attributes > 0) { |
1155 | uint32_t i; |
1156 | for (i = 0; i < num_attributes; ++i) { |
1157 | attr = attributes.AttributeAtIndex(i); |
1158 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1159 | switch (attr) { |
1160 | case DW_AT_decl_file: |
1161 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
1162 | form_value.Unsigned())); |
1163 | break; |
1164 | case DW_AT_decl_line: |
1165 | decl.SetLine(form_value.Unsigned()); |
1166 | break; |
1167 | case DW_AT_decl_column: |
1168 | decl.SetColumn(form_value.Unsigned()); |
1169 | break; |
1170 | case DW_AT_name: |
1171 | type_name_cstr = form_value.AsCString(); |
1172 | type_name_const_str.SetCString(type_name_cstr); |
1173 | break; |
1174 | |
1175 | case DW_AT_linkage_name: |
1176 | case DW_AT_MIPS_linkage_name: |
1177 | break; // mangled = |
1178 | // form_value.AsCString(&dwarf->get_debug_str_data()); |
1179 | // break; |
1180 | case DW_AT_type: |
1181 | type_die_form = form_value; |
1182 | break; |
1183 | case DW_AT_accessibility: |
1184 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
1185 | break; |
1186 | case DW_AT_declaration: |
1187 | break; // is_forward_declaration = form_value.Boolean(); break; |
1188 | case DW_AT_inline: |
1189 | is_inline = form_value.Boolean(); |
1190 | break; |
1191 | case DW_AT_virtuality: |
1192 | is_virtual = form_value.Boolean(); |
1193 | break; |
1194 | case DW_AT_explicit: |
1195 | is_explicit = form_value.Boolean(); |
1196 | break; |
1197 | case DW_AT_artificial: |
1198 | is_artificial = form_value.Boolean(); |
1199 | break; |
1200 | |
1201 | case DW_AT_external: |
1202 | if (form_value.Unsigned()) { |
1203 | if (storage == clang::SC_None) |
1204 | storage = clang::SC_Extern; |
1205 | else |
1206 | storage = clang::SC_PrivateExtern; |
1207 | } |
1208 | break; |
1209 | |
1210 | case DW_AT_specification: |
1211 | specification_die_form = form_value; |
1212 | break; |
1213 | |
1214 | case DW_AT_abstract_origin: |
1215 | abstract_origin_die_form = form_value; |
1216 | break; |
1217 | |
1218 | case DW_AT_object_pointer: |
1219 | object_pointer_die_offset = form_value.Reference(); |
1220 | break; |
1221 | |
1222 | case DW_AT_allocated: |
1223 | case DW_AT_associated: |
1224 | case DW_AT_address_class: |
1225 | case DW_AT_calling_convention: |
1226 | case DW_AT_data_location: |
1227 | case DW_AT_elemental: |
1228 | case DW_AT_entry_pc: |
1229 | case DW_AT_frame_base: |
1230 | case DW_AT_high_pc: |
1231 | case DW_AT_low_pc: |
1232 | case DW_AT_prototyped: |
1233 | case DW_AT_pure: |
1234 | case DW_AT_ranges: |
1235 | case DW_AT_recursive: |
1236 | case DW_AT_return_addr: |
1237 | case DW_AT_segment: |
1238 | case DW_AT_start_scope: |
1239 | case DW_AT_static_link: |
1240 | case DW_AT_trampoline: |
1241 | case DW_AT_visibility: |
1242 | case DW_AT_vtable_elem_location: |
1243 | case DW_AT_description: |
1244 | case DW_AT_sibling: |
1245 | break; |
1246 | } |
1247 | } |
1248 | } |
1249 | } |
1250 | |
1251 | std::string object_pointer_name; |
1252 | if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) { |
1253 | DWARFDIE object_pointer_die = die.GetDIE(object_pointer_die_offset); |
1254 | if (object_pointer_die) { |
1255 | const char *object_pointer_name_cstr = object_pointer_die.GetName(); |
1256 | if (object_pointer_name_cstr) |
1257 | object_pointer_name = object_pointer_name_cstr; |
1258 | } |
1259 | } |
1260 | |
1261 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1262 | DW_TAG_value_to_name(tag), type_name_cstr); |
1263 | |
1264 | CompilerType return_clang_type; |
1265 | Type *func_type = NULL__null; |
1266 | |
1267 | if (type_die_form.IsValid()) |
1268 | func_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
1269 | |
1270 | if (func_type) |
1271 | return_clang_type = func_type->GetForwardCompilerType(); |
1272 | else |
1273 | return_clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
1274 | |
1275 | std::vector<CompilerType> function_param_types; |
1276 | std::vector<clang::ParmVarDecl *> function_param_decls; |
1277 | |
1278 | // Parse the function children for the parameters |
1279 | |
1280 | DWARFDIE decl_ctx_die; |
1281 | clang::DeclContext *containing_decl_ctx = |
1282 | GetClangDeclContextContainingDIE(die, &decl_ctx_die); |
1283 | const clang::Decl::Kind containing_decl_kind = |
1284 | containing_decl_ctx->getDeclKind(); |
1285 | |
1286 | bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind); |
1287 | // Start off static. This will be set to false in |
1288 | // ParseChildParameters(...) |
1289 | // if we find a "this" parameters as the first parameter |
1290 | if (is_cxx_method) { |
1291 | is_static = true; |
1292 | } |
1293 | |
1294 | if (die.HasChildren()) { |
1295 | bool skip_artificial = true; |
1296 | ParseChildParameters(sc, containing_decl_ctx, die, skip_artificial, |
1297 | is_static, is_variadic, has_template_params, |
1298 | function_param_types, function_param_decls, |
1299 | type_quals); |
1300 | } |
1301 | |
1302 | bool ignore_containing_context = false; |
1303 | // Check for templatized class member functions. If we had any |
1304 | // DW_TAG_template_type_parameter |
1305 | // or DW_TAG_template_value_parameter the DW_TAG_subprogram DIE, then we |
1306 | // can't let this become |
1307 | // a method in a class. Why? Because templatized functions are only |
1308 | // emitted if one of the |
1309 | // templatized methods is used in the current compile unit and we will |
1310 | // end up with classes |
1311 | // that may or may not include these member functions and this means one |
1312 | // class won't match another |
1313 | // class definition and it affects our ability to use a class in the |
1314 | // clang expression parser. So |
1315 | // for the greater good, we currently must not allow any template member |
1316 | // functions in a class definition. |
1317 | if (is_cxx_method && has_template_params) { |
1318 | ignore_containing_context = true; |
1319 | is_cxx_method = false; |
1320 | } |
1321 | |
1322 | // clang_type will get the function prototype clang type after this call |
1323 | clang_type = m_ast.CreateFunctionType( |
1324 | return_clang_type, function_param_types.data(), |
1325 | function_param_types.size(), is_variadic, type_quals); |
1326 | |
1327 | if (type_name_cstr) { |
1328 | bool type_handled = false; |
1329 | if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) { |
1330 | ObjCLanguage::MethodName objc_method(type_name_cstr, true); |
1331 | if (objc_method.IsValid(true)) { |
1332 | CompilerType class_opaque_type; |
1333 | ConstString class_name(objc_method.GetClassName()); |
1334 | if (class_name) { |
1335 | TypeSP complete_objc_class_type_sp( |
1336 | dwarf->FindCompleteObjCDefinitionTypeForDIE( |
1337 | DWARFDIE(), class_name, false)); |
1338 | |
1339 | if (complete_objc_class_type_sp) { |
1340 | CompilerType type_clang_forward_type = |
1341 | complete_objc_class_type_sp->GetForwardCompilerType(); |
1342 | if (ClangASTContext::IsObjCObjectOrInterfaceType( |
1343 | type_clang_forward_type)) |
1344 | class_opaque_type = type_clang_forward_type; |
1345 | } |
1346 | } |
1347 | |
1348 | if (class_opaque_type) { |
1349 | // If accessibility isn't set to anything valid, assume public |
1350 | // for |
1351 | // now... |
1352 | if (accessibility == eAccessNone) |
1353 | accessibility = eAccessPublic; |
1354 | |
1355 | clang::ObjCMethodDecl *objc_method_decl = |
1356 | m_ast.AddMethodToObjCObjectType( |
1357 | class_opaque_type, type_name_cstr, clang_type, |
1358 | accessibility, is_artificial, is_variadic); |
1359 | type_handled = objc_method_decl != NULL__null; |
1360 | if (type_handled) { |
1361 | LinkDeclContextToDIE( |
1362 | ClangASTContext::GetAsDeclContext(objc_method_decl), die); |
1363 | m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID()); |
1364 | } else { |
1365 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1366 | "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), " |
1367 | "please file a bug and attach the file at the start of " |
1368 | "this error message", |
1369 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
1370 | } |
1371 | } |
1372 | } else if (is_cxx_method) { |
1373 | // Look at the parent of this DIE and see if is is |
1374 | // a class or struct and see if this is actually a |
1375 | // C++ method |
1376 | Type *class_type = dwarf->ResolveType(decl_ctx_die); |
1377 | if (class_type) { |
1378 | bool alternate_defn = false; |
1379 | if (class_type->GetID() != decl_ctx_die.GetID() || |
1380 | decl_ctx_die.GetContainingDWOModuleDIE()) { |
1381 | alternate_defn = true; |
1382 | |
1383 | // We uniqued the parent class of this function to another |
1384 | // class |
1385 | // so we now need to associate all dies under "decl_ctx_die" |
1386 | // to |
1387 | // DIEs in the DIE for "class_type"... |
1388 | SymbolFileDWARF *class_symfile = NULL__null; |
1389 | DWARFDIE class_type_die; |
1390 | |
1391 | SymbolFileDWARFDebugMap *debug_map_symfile = |
1392 | dwarf->GetDebugMapSymfile(); |
1393 | if (debug_map_symfile) { |
1394 | class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex( |
1395 | SymbolFileDWARFDebugMap::GetOSOIndexFromUserID( |
1396 | class_type->GetID())); |
1397 | class_type_die = class_symfile->DebugInfo()->GetDIE( |
1398 | DIERef(class_type->GetID(), dwarf)); |
1399 | } else { |
1400 | class_symfile = dwarf; |
Value stored to 'class_symfile' is never read | |
1401 | class_type_die = dwarf->DebugInfo()->GetDIE( |
1402 | DIERef(class_type->GetID(), dwarf)); |
1403 | } |
1404 | if (class_type_die) { |
1405 | DWARFDIECollection failures; |
1406 | |
1407 | CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die, |
1408 | class_type, failures); |
1409 | |
1410 | // FIXME do something with these failures that's smarter |
1411 | // than |
1412 | // just dropping them on the ground. Unfortunately classes |
1413 | // don't |
1414 | // like having stuff added to them after their definitions |
1415 | // are |
1416 | // complete... |
1417 | |
1418 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
1419 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1420 | type_sp = type_ptr->shared_from_this(); |
1421 | break; |
1422 | } |
1423 | } |
1424 | } |
1425 | |
1426 | if (specification_die_form.IsValid()) { |
1427 | // We have a specification which we are going to base our |
1428 | // function |
1429 | // prototype off of, so we need this type to be completed so |
1430 | // that the |
1431 | // m_die_to_decl_ctx for the method in the specification has a |
1432 | // valid |
1433 | // clang decl context. |
1434 | class_type->GetForwardCompilerType(); |
1435 | // If we have a specification, then the function type should |
1436 | // have been |
1437 | // made with the specification and not with this die. |
1438 | DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE( |
1439 | DIERef(specification_die_form)); |
1440 | clang::DeclContext *spec_clang_decl_ctx = |
1441 | GetClangDeclContextForDIE(spec_die); |
1442 | if (spec_clang_decl_ctx) { |
1443 | LinkDeclContextToDIE(spec_clang_decl_ctx, die); |
1444 | } else { |
1445 | dwarf->GetObjectFile()->GetModule()->ReportWarning( |
1446 | "0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8" PRIx64"l" "x" |
1447 | ") has no decl\n", |
1448 | die.GetID(), specification_die_form.Reference()); |
1449 | } |
1450 | type_handled = true; |
1451 | } else if (abstract_origin_die_form.IsValid()) { |
1452 | // We have a specification which we are going to base our |
1453 | // function |
1454 | // prototype off of, so we need this type to be completed so |
1455 | // that the |
1456 | // m_die_to_decl_ctx for the method in the abstract origin has |
1457 | // a valid |
1458 | // 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!) |
1482 | // and clang will get mad if we try and make a function |
1483 | // that isn't |
1484 | // well formed in the DWARF, so we will just skip it... |
1485 | type_handled = true; |
1486 | } else { |
1487 | bool add_method = true; |
1488 | if (alternate_defn) { |
1489 | // If an alternate definition for the class exists, |
1490 | // then add the method only if an |
1491 | // equivalent is not already present. |
1492 | clang::CXXRecordDecl *record_decl = |
1493 | m_ast.GetAsCXXRecordDecl( |
1494 | class_opaque_type.GetOpaqueQualType()); |
1495 | if (record_decl) { |
1496 | for (auto method_iter = record_decl->method_begin(); |
1497 | method_iter != record_decl->method_end(); |
1498 | method_iter++) { |
1499 | clang::CXXMethodDecl *method_decl = *method_iter; |
1500 | if (method_decl->getNameInfo().getAsString() == |
1501 | std::string(type_name_cstr)) { |
1502 | if (method_decl->getType() == |
1503 | ClangUtil::GetQualType(clang_type)) { |
1504 | add_method = false; |
1505 | LinkDeclContextToDIE( |
1506 | ClangASTContext::GetAsDeclContext( |
1507 | method_decl), |
1508 | die); |
1509 | type_handled = true; |
1510 | |
1511 | break; |
1512 | } |
1513 | } |
1514 | } |
1515 | } |
1516 | } |
1517 | |
1518 | if (add_method) { |
1519 | llvm::PrettyStackTraceFormat stack_trace( |
1520 | "SymbolFileDWARF::ParseType() is adding a method " |
1521 | "%s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s", |
1522 | type_name_cstr, |
1523 | class_type->GetName().GetCString(), die.GetID(), |
1524 | dwarf->GetObjectFile() |
1525 | ->GetFileSpec() |
1526 | .GetPath() |
1527 | .c_str()); |
1528 | |
1529 | const bool is_attr_used = false; |
1530 | // Neither GCC 4.2 nor clang++ currently set a valid |
1531 | // accessibility |
1532 | // in the DWARF for C++ methods... Default to public |
1533 | // for now... |
1534 | if (accessibility == eAccessNone) |
1535 | accessibility = eAccessPublic; |
1536 | |
1537 | clang::CXXMethodDecl *cxx_method_decl = |
1538 | m_ast.AddMethodToCXXRecordType( |
1539 | class_opaque_type.GetOpaqueQualType(), |
1540 | type_name_cstr, clang_type, accessibility, |
1541 | is_virtual, is_static, is_inline, is_explicit, |
1542 | is_attr_used, is_artificial); |
1543 | |
1544 | type_handled = cxx_method_decl != NULL__null; |
1545 | |
1546 | if (type_handled) { |
1547 | LinkDeclContextToDIE( |
1548 | ClangASTContext::GetAsDeclContext( |
1549 | cxx_method_decl), |
1550 | die); |
1551 | |
1552 | ClangASTMetadata metadata; |
1553 | metadata.SetUserID(die.GetID()); |
1554 | |
1555 | if (!object_pointer_name.empty()) { |
1556 | metadata.SetObjectPtrName( |
1557 | object_pointer_name.c_str()); |
1558 | if (log) |
1559 | log->Printf( |
1560 | "Setting object pointer name: %s on method " |
1561 | "object %p.\n", |
1562 | object_pointer_name.c_str(), |
1563 | static_cast<void *>(cxx_method_decl)); |
1564 | } |
1565 | m_ast.SetMetadata(cxx_method_decl, metadata); |
1566 | } else { |
1567 | ignore_containing_context = true; |
1568 | } |
1569 | } |
1570 | } |
1571 | } else { |
1572 | // We were asked to parse the type for a method in a |
1573 | // class, yet the |
1574 | // class hasn't been asked to complete itself through the |
1575 | // clang::ExternalASTSource protocol, so we need to just |
1576 | // have the |
1577 | // class complete itself and do things the right way, then |
1578 | // our |
1579 | // DIE should then have an entry in the |
1580 | // dwarf->GetDIEToType() map. First |
1581 | // we need to modify the dwarf->GetDIEToType() so it |
1582 | // doesn't think we are |
1583 | // trying to parse this DIE anymore... |
1584 | dwarf->GetDIEToType()[die.GetDIE()] = NULL__null; |
1585 | |
1586 | // Now we get the full type to force our class type to |
1587 | // complete itself |
1588 | // using the clang::ExternalASTSource protocol which will |
1589 | // parse all |
1590 | // base classes and all methods (including the method for |
1591 | // this DIE). |
1592 | class_type->GetFullCompilerType(); |
1593 | |
1594 | // The type for this DIE should have been filled in the |
1595 | // function call above |
1596 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
1597 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1598 | type_sp = type_ptr->shared_from_this(); |
1599 | break; |
1600 | } |
1601 | |
1602 | // FIXME This is fixing some even uglier behavior but we |
1603 | // really need to |
1604 | // uniq the methods of each class as well as the class |
1605 | // itself. |
1606 | // <rdar://problem/11240464> |
1607 | type_handled = true; |
1608 | } |
1609 | } |
1610 | } |
1611 | } |
1612 | } |
1613 | } |
1614 | |
1615 | if (!type_handled) { |
1616 | clang::FunctionDecl *function_decl = nullptr; |
1617 | |
1618 | if (abstract_origin_die_form.IsValid()) { |
1619 | DWARFDIE abs_die = |
1620 | dwarf->DebugInfo()->GetDIE(DIERef(abstract_origin_die_form)); |
1621 | |
1622 | SymbolContext sc; |
1623 | |
1624 | if (dwarf->ResolveType(abs_die)) { |
1625 | function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>( |
1626 | GetCachedClangDeclContextForDIE(abs_die)); |
1627 | |
1628 | if (function_decl) { |
1629 | LinkDeclContextToDIE(function_decl, die); |
1630 | } |
1631 | } |
1632 | } |
1633 | |
1634 | if (!function_decl) { |
1635 | // We just have a function that isn't part of a class |
1636 | function_decl = m_ast.CreateFunctionDeclaration( |
1637 | ignore_containing_context ? m_ast.GetTranslationUnitDecl() |
1638 | : containing_decl_ctx, |
1639 | type_name_cstr, clang_type, storage, is_inline); |
1640 | |
1641 | if (has_template_params) { |
1642 | ClangASTContext::TemplateParameterInfos template_param_infos; |
1643 | ParseTemplateParameterInfos(die, template_param_infos); |
1644 | clang::FunctionTemplateDecl *func_template_decl = |
1645 | m_ast.CreateFunctionTemplateDecl( |
1646 | containing_decl_ctx, function_decl, type_name_cstr, |
1647 | template_param_infos); |
1648 | m_ast.CreateFunctionTemplateSpecializationInfo( |
1649 | function_decl, func_template_decl, template_param_infos); |
1650 | } |
1651 | |
1652 | lldbassert(function_decl)lldb_private::lldb_assert(function_decl, "function_decl", __FUNCTION__ , "/build/llvm-toolchain-snapshot-7~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1652); |
1653 | |
1654 | if (function_decl) { |
1655 | LinkDeclContextToDIE(function_decl, die); |
1656 | |
1657 | if (!function_param_decls.empty()) |
1658 | m_ast.SetFunctionParameters(function_decl, |
1659 | &function_param_decls.front(), |
1660 | function_param_decls.size()); |
1661 | |
1662 | ClangASTMetadata metadata; |
1663 | metadata.SetUserID(die.GetID()); |
1664 | |
1665 | if (!object_pointer_name.empty()) { |
1666 | metadata.SetObjectPtrName(object_pointer_name.c_str()); |
1667 | if (log) |
1668 | log->Printf("Setting object pointer name: %s on function " |
1669 | "object %p.", |
1670 | object_pointer_name.c_str(), |
1671 | static_cast<void *>(function_decl)); |
1672 | } |
1673 | m_ast.SetMetadata(function_decl, metadata); |
1674 | } |
1675 | } |
1676 | } |
1677 | } |
1678 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 0, NULL__null, |
1679 | LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingIsUID, &decl, |
1680 | clang_type, Type::eResolveStateFull)); |
1681 | assert(type_sp.get())(static_cast <bool> (type_sp.get()) ? void (0) : __assert_fail ("type_sp.get()", "/build/llvm-toolchain-snapshot-7~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1681, __extension__ __PRETTY_FUNCTION__)); |
1682 | } break; |
1683 | |
1684 | case DW_TAG_array_type: { |
1685 | // Set a bit that lets us know that we are currently parsing this |
1686 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
1687 | |
1688 | DWARFFormValue type_die_form; |
1689 | int64_t first_index = 0; |
1690 | uint32_t byte_stride = 0; |
1691 | uint32_t bit_stride = 0; |
1692 | bool is_vector = false; |
1693 | const size_t num_attributes = die.GetAttributes(attributes); |
1694 | |
1695 | if (num_attributes > 0) { |
1696 | uint32_t i; |
1697 | for (i = 0; i < num_attributes; ++i) { |
1698 | attr = attributes.AttributeAtIndex(i); |
1699 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1700 | switch (attr) { |
1701 | case DW_AT_decl_file: |
1702 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
1703 | form_value.Unsigned())); |
1704 | break; |
1705 | case DW_AT_decl_line: |
1706 | decl.SetLine(form_value.Unsigned()); |
1707 | break; |
1708 | case DW_AT_decl_column: |
1709 | decl.SetColumn(form_value.Unsigned()); |
1710 | break; |
1711 | case DW_AT_name: |
1712 | type_name_cstr = form_value.AsCString(); |
1713 | type_name_const_str.SetCString(type_name_cstr); |
1714 | break; |
1715 | |
1716 | case DW_AT_type: |
1717 | type_die_form = form_value; |
1718 | break; |
1719 | case DW_AT_byte_size: |
1720 | break; // byte_size = form_value.Unsigned(); break; |
1721 | case DW_AT_byte_stride: |
1722 | byte_stride = form_value.Unsigned(); |
1723 | break; |
1724 | case DW_AT_bit_stride: |
1725 | bit_stride = form_value.Unsigned(); |
1726 | break; |
1727 | case DW_AT_GNU_vector: |
1728 | is_vector = form_value.Boolean(); |
1729 | break; |
1730 | case DW_AT_accessibility: |
1731 | break; // accessibility = |
1732 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
1733 | case DW_AT_declaration: |
1734 | break; // is_forward_declaration = form_value.Boolean(); break; |
1735 | case DW_AT_allocated: |
1736 | case DW_AT_associated: |
1737 | case DW_AT_data_location: |
1738 | case DW_AT_description: |
1739 | case DW_AT_ordering: |
1740 | case DW_AT_start_scope: |
1741 | case DW_AT_visibility: |
1742 | case DW_AT_specification: |
1743 | case DW_AT_abstract_origin: |
1744 | case DW_AT_sibling: |
1745 | break; |
1746 | } |
1747 | } |
1748 | } |
1749 | |
1750 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
1751 | DW_TAG_value_to_name(tag), type_name_cstr); |
1752 | |
1753 | DIERef type_die_ref(type_die_form); |
1754 | Type *element_type = dwarf->ResolveTypeUID(type_die_ref); |
1755 | |
1756 | if (element_type) { |
1757 | std::vector<uint64_t> element_orders; |
1758 | ParseChildArrayInfo(sc, die, first_index, element_orders, |
1759 | byte_stride, bit_stride); |
1760 | if (byte_stride == 0 && bit_stride == 0) |
1761 | byte_stride = element_type->GetByteSize(); |
1762 | CompilerType array_element_type = |
1763 | element_type->GetForwardCompilerType(); |
1764 | |
1765 | if (ClangASTContext::IsCXXClassType(array_element_type) && |
1766 | array_element_type.GetCompleteType() == false) { |
1767 | ModuleSP module_sp = die.GetModule(); |
1768 | if (module_sp) { |
1769 | if (die.GetCU()->GetProducer() == eProducerClang) |
1770 | module_sp->ReportError( |
1771 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
1772 | "class/union/struct element type DIE 0x%8.8x that is a " |
1773 | "forward declaration, not a complete definition.\nTry " |
1774 | "compiling the source file with -fstandalone-debug or " |
1775 | "disable -gmodules", |
1776 | die.GetOffset(), type_die_ref.die_offset); |
1777 | else |
1778 | module_sp->ReportError( |
1779 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
1780 | "class/union/struct element type DIE 0x%8.8x that is a " |
1781 | "forward declaration, not a complete definition.\nPlease " |
1782 | "file a bug against the compiler and include the " |
1783 | "preprocessed output for %s", |
1784 | die.GetOffset(), type_die_ref.die_offset, |
1785 | die.GetLLDBCompileUnit() |
1786 | ? die.GetLLDBCompileUnit()->GetPath().c_str() |
1787 | : "the source file"); |
1788 | } |
1789 | |
1790 | // We have no choice other than to pretend that the element class |
1791 | // type |
1792 | // is complete. If we don't do this, clang will crash when trying |
1793 | // to layout the class. Since we provide layout assistance, all |
1794 | // ivars in this class and other classes will be fine, this is |
1795 | // the best we can do short of crashing. |
1796 | if (ClangASTContext::StartTagDeclarationDefinition( |
1797 | array_element_type)) { |
1798 | ClangASTContext::CompleteTagDeclarationDefinition( |
1799 | array_element_type); |
1800 | } else { |
1801 | module_sp->ReportError("DWARF DIE at 0x%8.8x was not able to " |
1802 | "start its definition.\nPlease file a " |
1803 | "bug and attach the file at the start " |
1804 | "of this error message", |
1805 | type_die_ref.die_offset); |
1806 | } |
1807 | } |
1808 | |
1809 | uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; |
1810 | if (element_orders.size() > 0) { |
1811 | uint64_t num_elements = 0; |
1812 | std::vector<uint64_t>::const_reverse_iterator pos; |
1813 | std::vector<uint64_t>::const_reverse_iterator end = |
1814 | element_orders.rend(); |
1815 | for (pos = element_orders.rbegin(); pos != end; ++pos) { |
1816 | num_elements = *pos; |
1817 | clang_type = m_ast.CreateArrayType(array_element_type, |
1818 | num_elements, is_vector); |
1819 | array_element_type = clang_type; |
1820 | array_element_bit_stride = |
1821 | num_elements ? array_element_bit_stride * num_elements |
1822 | : array_element_bit_stride; |
1823 | } |
1824 | } else { |
1825 | clang_type = |
1826 | m_ast.CreateArrayType(array_element_type, 0, is_vector); |
1827 | } |
1828 | ConstString empty_name; |
1829 | type_sp.reset(new Type( |
1830 | die.GetID(), dwarf, empty_name, array_element_bit_stride / 8, |
1831 | NULL__null, DIERef(type_die_form).GetUID(dwarf), Type::eEncodingIsUID, |
1832 | &decl, clang_type, Type::eResolveStateFull)); |
1833 | type_sp->SetEncodingType(element_type); |
1834 | } |
1835 | } |
1836 | } break; |
1837 | |
1838 | case DW_TAG_ptr_to_member_type: { |
1839 | DWARFFormValue type_die_form; |
1840 | DWARFFormValue containing_type_die_form; |
1841 | |
1842 | const size_t num_attributes = die.GetAttributes(attributes); |
1843 | |
1844 | if (num_attributes > 0) { |
1845 | uint32_t i; |
1846 | for (i = 0; i < num_attributes; ++i) { |
1847 | attr = attributes.AttributeAtIndex(i); |
1848 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
1849 | switch (attr) { |
1850 | case DW_AT_type: |
1851 | type_die_form = form_value; |
1852 | break; |
1853 | case DW_AT_containing_type: |
1854 | containing_type_die_form = form_value; |
1855 | break; |
1856 | } |
1857 | } |
1858 | } |
1859 | |
1860 | Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
1861 | Type *class_type = |
1862 | dwarf->ResolveTypeUID(DIERef(containing_type_die_form)); |
1863 | |
1864 | CompilerType pointee_clang_type = |
1865 | pointee_type->GetForwardCompilerType(); |
1866 | CompilerType class_clang_type = class_type->GetLayoutCompilerType(); |
1867 | |
1868 | clang_type = ClangASTContext::CreateMemberPointerType( |
1869 | class_clang_type, pointee_clang_type); |
1870 | |
1871 | byte_size = clang_type.GetByteSize(nullptr); |
1872 | |
1873 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
1874 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
1875 | Type::eEncodingIsUID, NULL__null, clang_type, |
1876 | Type::eResolveStateForward)); |
1877 | } |
1878 | |
1879 | break; |
1880 | } |
1881 | default: |
1882 | dwarf->GetObjectFile()->GetModule()->ReportError( |
1883 | "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and " |
1884 | "attach the file at the start of this error message", |
1885 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
1886 | break; |
1887 | } |
1888 | |
1889 | if (type_sp.get()) { |
1890 | DWARFDIE sc_parent_die = |
1891 | SymbolFileDWARF::GetParentSymbolContextDIE(die); |
1892 | dw_tag_t sc_parent_tag = sc_parent_die.Tag(); |
1893 | |
1894 | SymbolContextScope *symbol_context_scope = NULL__null; |
1895 | if (sc_parent_tag == DW_TAG_compile_unit) { |
1896 | symbol_context_scope = sc.comp_unit; |
1897 | } else if (sc.function != NULL__null && sc_parent_die) { |
1898 | symbol_context_scope = |
1899 | sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); |
1900 | if (symbol_context_scope == NULL__null) |
1901 | symbol_context_scope = sc.function; |
1902 | } |
1903 | |
1904 | if (symbol_context_scope != NULL__null) { |
1905 | type_sp->SetSymbolContextScope(symbol_context_scope); |
1906 | } |
1907 | |
1908 | // We are ready to put this type into the uniqued list up at the module |
1909 | // level |
1910 | type_list->Insert(type_sp); |
1911 | |
1912 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
1913 | } |
1914 | } else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
1915 | type_sp = type_ptr->shared_from_this(); |
1916 | } |
1917 | } |
1918 | return type_sp; |
1919 | } |
1920 | |
1921 | // DWARF parsing functions |
1922 | |
1923 | class DWARFASTParserClang::DelayedAddObjCClassProperty { |
1924 | public: |
1925 | DelayedAddObjCClassProperty( |
1926 | const CompilerType &class_opaque_type, const char *property_name, |
1927 | const CompilerType &property_opaque_type, // The property type is only |
1928 | // required if you don't have an |
1929 | // ivar decl |
1930 | clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name, |
1931 | const char *property_getter_name, uint32_t property_attributes, |
1932 | const ClangASTMetadata *metadata) |
1933 | : m_class_opaque_type(class_opaque_type), m_property_name(property_name), |
1934 | m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl), |
1935 | m_property_setter_name(property_setter_name), |
1936 | m_property_getter_name(property_getter_name), |
1937 | m_property_attributes(property_attributes) { |
1938 | if (metadata != NULL__null) { |
1939 | m_metadata_ap.reset(new ClangASTMetadata()); |
1940 | *m_metadata_ap = *metadata; |
1941 | } |
1942 | } |
1943 | |
1944 | DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs) { |
1945 | *this = rhs; |
1946 | } |
1947 | |
1948 | DelayedAddObjCClassProperty & |
1949 | operator=(const DelayedAddObjCClassProperty &rhs) { |
1950 | m_class_opaque_type = rhs.m_class_opaque_type; |
1951 | m_property_name = rhs.m_property_name; |
1952 | m_property_opaque_type = rhs.m_property_opaque_type; |
1953 | m_ivar_decl = rhs.m_ivar_decl; |
1954 | m_property_setter_name = rhs.m_property_setter_name; |
1955 | m_property_getter_name = rhs.m_property_getter_name; |
1956 | m_property_attributes = rhs.m_property_attributes; |
1957 | |
1958 | if (rhs.m_metadata_ap.get()) { |
1959 | m_metadata_ap.reset(new ClangASTMetadata()); |
1960 | *m_metadata_ap = *rhs.m_metadata_ap; |
1961 | } |
1962 | return *this; |
1963 | } |
1964 | |
1965 | bool Finalize() { |
1966 | return ClangASTContext::AddObjCClassProperty( |
1967 | m_class_opaque_type, m_property_name, m_property_opaque_type, |
1968 | m_ivar_decl, m_property_setter_name, m_property_getter_name, |
1969 | m_property_attributes, m_metadata_ap.get()); |
1970 | } |
1971 | |
1972 | private: |
1973 | CompilerType m_class_opaque_type; |
1974 | const char *m_property_name; |
1975 | CompilerType m_property_opaque_type; |
1976 | clang::ObjCIvarDecl *m_ivar_decl; |
1977 | const char *m_property_setter_name; |
1978 | const char *m_property_getter_name; |
1979 | uint32_t m_property_attributes; |
1980 | std::unique_ptr<ClangASTMetadata> m_metadata_ap; |
1981 | }; |
1982 | |
1983 | bool DWARFASTParserClang::ParseTemplateDIE( |
1984 | const DWARFDIE &die, |
1985 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
1986 | const dw_tag_t tag = die.Tag(); |
1987 | |
1988 | switch (tag) { |
1989 | case DW_TAG_GNU_template_parameter_pack: { |
1990 | template_param_infos.packed_args.reset( |
1991 | new ClangASTContext::TemplateParameterInfos); |
1992 | for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid(); |
1993 | child_die = child_die.GetSibling()) { |
1994 | if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args)) |
1995 | return false; |
1996 | } |
1997 | if (const char *name = die.GetName()) { |
1998 | template_param_infos.pack_name = name; |
1999 | } |
2000 | return true; |
2001 | } |
2002 | case DW_TAG_template_type_parameter: |
2003 | case DW_TAG_template_value_parameter: { |
2004 | DWARFAttributes attributes; |
2005 | const size_t num_attributes = die.GetAttributes(attributes); |
2006 | const char *name = nullptr; |
2007 | CompilerType clang_type; |
2008 | uint64_t uval64 = 0; |
2009 | bool uval64_valid = false; |
2010 | if (num_attributes > 0) { |
2011 | DWARFFormValue form_value; |
2012 | for (size_t i = 0; i < num_attributes; ++i) { |
2013 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2014 | |
2015 | switch (attr) { |
2016 | case DW_AT_name: |
2017 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2018 | name = form_value.AsCString(); |
2019 | break; |
2020 | |
2021 | case DW_AT_type: |
2022 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2023 | Type *lldb_type = die.ResolveTypeUID(DIERef(form_value)); |
2024 | if (lldb_type) |
2025 | clang_type = lldb_type->GetForwardCompilerType(); |
2026 | } |
2027 | break; |
2028 | |
2029 | case DW_AT_const_value: |
2030 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2031 | uval64_valid = true; |
2032 | uval64 = form_value.Unsigned(); |
2033 | } |
2034 | break; |
2035 | default: |
2036 | break; |
2037 | } |
2038 | } |
2039 | |
2040 | clang::ASTContext *ast = m_ast.getASTContext(); |
2041 | if (!clang_type) |
2042 | clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
2043 | |
2044 | if (clang_type) { |
2045 | bool is_signed = false; |
2046 | if (name && name[0]) |
2047 | template_param_infos.names.push_back(name); |
2048 | else |
2049 | template_param_infos.names.push_back(NULL__null); |
2050 | |
2051 | // Get the signed value for any integer or enumeration if available |
2052 | clang_type.IsIntegerOrEnumerationType(is_signed); |
2053 | |
2054 | if (tag == DW_TAG_template_value_parameter && uval64_valid) { |
2055 | llvm::APInt apint(clang_type.GetBitSize(nullptr), uval64, is_signed); |
2056 | template_param_infos.args.push_back( |
2057 | clang::TemplateArgument(*ast, llvm::APSInt(apint, !is_signed), |
2058 | ClangUtil::GetQualType(clang_type))); |
2059 | } else { |
2060 | template_param_infos.args.push_back( |
2061 | clang::TemplateArgument(ClangUtil::GetQualType(clang_type))); |
2062 | } |
2063 | } else { |
2064 | return false; |
2065 | } |
2066 | } |
2067 | } |
2068 | return true; |
2069 | |
2070 | default: |
2071 | break; |
2072 | } |
2073 | return false; |
2074 | } |
2075 | |
2076 | bool DWARFASTParserClang::ParseTemplateParameterInfos( |
2077 | const DWARFDIE &parent_die, |
2078 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
2079 | |
2080 | if (!parent_die) |
2081 | return false; |
2082 | |
2083 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2084 | die = die.GetSibling()) { |
2085 | const dw_tag_t tag = die.Tag(); |
2086 | |
2087 | switch (tag) { |
2088 | case DW_TAG_template_type_parameter: |
2089 | case DW_TAG_template_value_parameter: |
2090 | case DW_TAG_GNU_template_parameter_pack: |
2091 | ParseTemplateDIE(die, template_param_infos); |
2092 | break; |
2093 | |
2094 | default: |
2095 | break; |
2096 | } |
2097 | } |
2098 | if (template_param_infos.args.empty()) |
2099 | return false; |
2100 | return template_param_infos.args.size() == template_param_infos.names.size(); |
2101 | } |
2102 | |
2103 | // Checks whether m1 is an overload of m2 (as opposed to an override). |
2104 | // This is called by addOverridesForMethod to distinguish overrides (which share |
2105 | // a vtable entry) from overloads (which require distinct entries). |
2106 | static bool isOverload(clang::CXXMethodDecl *m1, clang::CXXMethodDecl *m2) { |
2107 | // FIXME: This should detect covariant return types, but currently doesn't. |
2108 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2109) |
2109 | "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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2109); |
2110 | clang::ASTContext &context = m1->getASTContext(); |
2111 | |
2112 | const auto *m1Type = |
2113 | llvm::cast<clang::FunctionProtoType>( |
2114 | context.getCanonicalType(m1->getType())); |
2115 | |
2116 | const auto *m2Type = |
2117 | llvm::cast<clang::FunctionProtoType>( |
2118 | context.getCanonicalType(m2->getType())); |
2119 | |
2120 | auto compareArgTypes = |
2121 | [&context](const clang::QualType &m1p, const clang::QualType &m2p) { |
2122 | return context.hasSameType(m1p.getUnqualifiedType(), |
2123 | m2p.getUnqualifiedType()); |
2124 | }; |
2125 | |
2126 | return !std::equal(m1Type->param_type_begin(), m1Type->param_type_end(), |
2127 | m2Type->param_type_begin(), compareArgTypes); |
2128 | } |
2129 | |
2130 | // If decl is a virtual method, walk the base classes looking for methods that |
2131 | // decl overrides. This table of overridden methods is used by IRGen to determine |
2132 | // the vtable layout for decl's parent class. |
2133 | static void addOverridesForMethod(clang::CXXMethodDecl *decl) { |
2134 | if (!decl->isVirtual()) |
2135 | return; |
2136 | |
2137 | clang::CXXBasePaths paths; |
2138 | |
2139 | auto find_overridden_methods = |
2140 | [decl](const clang::CXXBaseSpecifier *specifier, clang::CXXBasePath &path) { |
2141 | if (auto *base_record = |
2142 | llvm::dyn_cast<clang::CXXRecordDecl>( |
2143 | specifier->getType()->getAs<clang::RecordType>()->getDecl())) { |
2144 | |
2145 | clang::DeclarationName name = decl->getDeclName(); |
2146 | |
2147 | // If this is a destructor, check whether the base class destructor is |
2148 | // virtual. |
2149 | if (name.getNameKind() == clang::DeclarationName::CXXDestructorName) |
2150 | if (auto *baseDtorDecl = base_record->getDestructor()) { |
2151 | if (baseDtorDecl->isVirtual()) { |
2152 | path.Decls = baseDtorDecl; |
2153 | return true; |
2154 | } else |
2155 | return false; |
2156 | } |
2157 | |
2158 | // Otherwise, search for name in the base class. |
2159 | for (path.Decls = base_record->lookup(name); !path.Decls.empty(); |
2160 | path.Decls = path.Decls.slice(1)) { |
2161 | if (auto *method_decl = |
2162 | llvm::dyn_cast<clang::CXXMethodDecl>(path.Decls.front())) |
2163 | if (method_decl->isVirtual() && !isOverload(decl, method_decl)) { |
2164 | path.Decls = method_decl; |
2165 | return true; |
2166 | } |
2167 | } |
2168 | } |
2169 | |
2170 | return false; |
2171 | }; |
2172 | |
2173 | if (decl->getParent()->lookupInBases(find_overridden_methods, paths)) { |
2174 | for (auto *overridden_decl : paths.found_decls()) |
2175 | decl->addOverriddenMethod( |
2176 | llvm::cast<clang::CXXMethodDecl>(overridden_decl)); |
2177 | } |
2178 | } |
2179 | |
2180 | // If clang_type is a CXXRecordDecl, builds the method override list for each |
2181 | // of its virtual methods. |
2182 | static void addMethodOverrides(ClangASTContext &ast, CompilerType &clang_type) { |
2183 | if (auto *record = |
2184 | ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType())) |
2185 | for (auto *method : record->methods()) |
2186 | addOverridesForMethod(method); |
2187 | } |
2188 | |
2189 | bool DWARFASTParserClang::CompleteTypeFromDWARF(const DWARFDIE &die, |
2190 | lldb_private::Type *type, |
2191 | CompilerType &clang_type) { |
2192 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
2193 | |
2194 | std::lock_guard<std::recursive_mutex> guard( |
2195 | dwarf->GetObjectFile()->GetModule()->GetMutex()); |
2196 | |
2197 | // Disable external storage for this type so we don't get anymore |
2198 | // clang::ExternalASTSource queries for this type. |
2199 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false); |
2200 | |
2201 | if (!die) |
2202 | return false; |
2203 | |
2204 | #if defined LLDB_CONFIGURATION_DEBUG |
2205 | //---------------------------------------------------------------------- |
2206 | // For debugging purposes, the LLDB_DWARF_DONT_COMPLETE_TYPENAMES |
2207 | // environment variable can be set with one or more typenames separated |
2208 | // by ';' characters. This will cause this function to not complete any |
2209 | // types whose names match. |
2210 | // |
2211 | // Examples of setting this environment variable: |
2212 | // |
2213 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo |
2214 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo;Bar;Baz |
2215 | //---------------------------------------------------------------------- |
2216 | const char *dont_complete_typenames_cstr = |
2217 | getenv("LLDB_DWARF_DONT_COMPLETE_TYPENAMES"); |
2218 | if (dont_complete_typenames_cstr && dont_complete_typenames_cstr[0]) { |
2219 | const char *die_name = die.GetName(); |
2220 | if (die_name && die_name[0]) { |
2221 | const char *match = strstr(dont_complete_typenames_cstr, die_name); |
2222 | if (match) { |
2223 | size_t die_name_length = strlen(die_name); |
2224 | while (match) { |
2225 | const char separator_char = ';'; |
2226 | const char next_char = match[die_name_length]; |
2227 | if (next_char == '\0' || next_char == separator_char) { |
2228 | if (match == dont_complete_typenames_cstr || |
2229 | match[-1] == separator_char) |
2230 | return false; |
2231 | } |
2232 | match = strstr(match + 1, die_name); |
2233 | } |
2234 | } |
2235 | } |
2236 | } |
2237 | #endif |
2238 | |
2239 | const dw_tag_t tag = die.Tag(); |
2240 | |
2241 | Log *log = |
2242 | nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); |
2243 | if (log) |
2244 | dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( |
2245 | log, "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...", |
2246 | die.GetID(), die.GetTagAsCString(), type->GetName().AsCString()); |
2247 | assert(clang_type)(static_cast <bool> (clang_type) ? void (0) : __assert_fail ("clang_type", "/build/llvm-toolchain-snapshot-7~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2247, __extension__ __PRETTY_FUNCTION__)); |
2248 | DWARFAttributes attributes; |
2249 | switch (tag) { |
2250 | case DW_TAG_structure_type: |
2251 | case DW_TAG_union_type: |
2252 | case DW_TAG_class_type: { |
2253 | ClangASTImporter::LayoutInfo layout_info; |
2254 | |
2255 | { |
2256 | if (die.HasChildren()) { |
2257 | LanguageType class_language = eLanguageTypeUnknown; |
2258 | if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) { |
2259 | class_language = eLanguageTypeObjC; |
2260 | // For objective C we don't start the definition when |
2261 | // the class is created. |
2262 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
2263 | } |
2264 | |
2265 | int tag_decl_kind = -1; |
2266 | AccessType default_accessibility = eAccessNone; |
2267 | if (tag == DW_TAG_structure_type) { |
2268 | tag_decl_kind = clang::TTK_Struct; |
2269 | default_accessibility = eAccessPublic; |
2270 | } else if (tag == DW_TAG_union_type) { |
2271 | tag_decl_kind = clang::TTK_Union; |
2272 | default_accessibility = eAccessPublic; |
2273 | } else if (tag == DW_TAG_class_type) { |
2274 | tag_decl_kind = clang::TTK_Class; |
2275 | default_accessibility = eAccessPrivate; |
2276 | } |
2277 | |
2278 | SymbolContext sc(die.GetLLDBCompileUnit()); |
2279 | std::vector<clang::CXXBaseSpecifier *> base_classes; |
2280 | std::vector<int> member_accessibilities; |
2281 | bool is_a_class = false; |
2282 | // Parse members and base classes first |
2283 | DWARFDIECollection member_function_dies; |
2284 | |
2285 | DelayedPropertyList delayed_properties; |
2286 | ParseChildMembers(sc, die, clang_type, class_language, base_classes, |
2287 | member_accessibilities, member_function_dies, |
2288 | delayed_properties, default_accessibility, is_a_class, |
2289 | layout_info); |
2290 | |
2291 | // Now parse any methods if there were any... |
2292 | size_t num_functions = member_function_dies.Size(); |
2293 | if (num_functions > 0) { |
2294 | for (size_t i = 0; i < num_functions; ++i) { |
2295 | dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i)); |
2296 | } |
2297 | } |
2298 | |
2299 | if (class_language == eLanguageTypeObjC) { |
2300 | ConstString class_name(clang_type.GetTypeName()); |
2301 | if (class_name) { |
2302 | DIEArray method_die_offsets; |
2303 | dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); |
2304 | |
2305 | if (!method_die_offsets.empty()) { |
2306 | DWARFDebugInfo *debug_info = dwarf->DebugInfo(); |
2307 | |
2308 | const size_t num_matches = method_die_offsets.size(); |
2309 | for (size_t i = 0; i < num_matches; ++i) { |
2310 | const DIERef &die_ref = method_die_offsets[i]; |
2311 | DWARFDIE method_die = debug_info->GetDIE(die_ref); |
2312 | |
2313 | if (method_die) |
2314 | method_die.ResolveType(); |
2315 | } |
2316 | } |
2317 | |
2318 | for (DelayedPropertyList::iterator pi = delayed_properties.begin(), |
2319 | pe = delayed_properties.end(); |
2320 | pi != pe; ++pi) |
2321 | pi->Finalize(); |
2322 | } |
2323 | } |
2324 | |
2325 | // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we |
2326 | // need to tell the clang type it is actually a class. |
2327 | if (class_language != eLanguageTypeObjC) { |
2328 | if (is_a_class && tag_decl_kind != clang::TTK_Class) |
2329 | m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type), |
2330 | clang::TTK_Class); |
2331 | } |
2332 | |
2333 | // Since DW_TAG_structure_type gets used for both classes |
2334 | // and structures, we may need to set any DW_TAG_member |
2335 | // fields to have a "private" access if none was specified. |
2336 | // When we parsed the child members we tracked that actual |
2337 | // accessibility value for each DW_TAG_member in the |
2338 | // "member_accessibilities" array. If the value for the |
2339 | // member is zero, then it was set to the "default_accessibility" |
2340 | // which for structs was "public". Below we correct this |
2341 | // by setting any fields to "private" that weren't correctly |
2342 | // set. |
2343 | if (is_a_class && !member_accessibilities.empty()) { |
2344 | // This is a class and all members that didn't have |
2345 | // their access specified are private. |
2346 | m_ast.SetDefaultAccessForRecordFields( |
2347 | m_ast.GetAsRecordDecl(clang_type), eAccessPrivate, |
2348 | &member_accessibilities.front(), member_accessibilities.size()); |
2349 | } |
2350 | |
2351 | if (!base_classes.empty()) { |
2352 | // Make sure all base classes refer to complete types and not |
2353 | // forward declarations. If we don't do this, clang will crash |
2354 | // with an assertion in the call to |
2355 | // clang_type.SetBaseClassesForClassType() |
2356 | for (auto &base_class : base_classes) { |
2357 | clang::TypeSourceInfo *type_source_info = |
2358 | base_class->getTypeSourceInfo(); |
2359 | if (type_source_info) { |
2360 | CompilerType base_class_type( |
2361 | &m_ast, type_source_info->getType().getAsOpaquePtr()); |
2362 | if (base_class_type.GetCompleteType() == false) { |
2363 | auto module = dwarf->GetObjectFile()->GetModule(); |
2364 | module->ReportError(":: Class '%s' has a base class '%s' which " |
2365 | "does not have a complete definition.", |
2366 | die.GetName(), |
2367 | base_class_type.GetTypeName().GetCString()); |
2368 | if (die.GetCU()->GetProducer() == eProducerClang) |
2369 | module->ReportError(":: Try compiling the source file with " |
2370 | "-fstandalone-debug."); |
2371 | |
2372 | // We have no choice other than to pretend that the base class |
2373 | // is complete. If we don't do this, clang will crash when we |
2374 | // call setBases() inside of |
2375 | // "clang_type.SetBaseClassesForClassType()" |
2376 | // below. Since we provide layout assistance, all ivars in this |
2377 | // class and other classes will be fine, this is the best we can |
2378 | // do |
2379 | // short of crashing. |
2380 | if (ClangASTContext::StartTagDeclarationDefinition( |
2381 | base_class_type)) { |
2382 | ClangASTContext::CompleteTagDeclarationDefinition( |
2383 | base_class_type); |
2384 | } |
2385 | } |
2386 | } |
2387 | } |
2388 | m_ast.SetBaseClassesForClassType(clang_type.GetOpaqueQualType(), |
2389 | &base_classes.front(), |
2390 | base_classes.size()); |
2391 | |
2392 | // Clang will copy each CXXBaseSpecifier in "base_classes" |
2393 | // so we have to free them all. |
2394 | ClangASTContext::DeleteBaseClassSpecifiers(&base_classes.front(), |
2395 | base_classes.size()); |
2396 | } |
2397 | } |
2398 | } |
2399 | |
2400 | addMethodOverrides(m_ast, clang_type); |
2401 | ClangASTContext::BuildIndirectFields(clang_type); |
2402 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
2403 | |
2404 | if (!layout_info.field_offsets.empty() || |
2405 | !layout_info.base_offsets.empty() || |
2406 | !layout_info.vbase_offsets.empty()) { |
2407 | if (type) |
2408 | layout_info.bit_size = type->GetByteSize() * 8; |
2409 | if (layout_info.bit_size == 0) |
2410 | layout_info.bit_size = |
2411 | die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; |
2412 | |
2413 | clang::CXXRecordDecl *record_decl = |
2414 | m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); |
2415 | if (record_decl) { |
2416 | if (log) { |
2417 | ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); |
2418 | |
2419 | if (module_sp) { |
2420 | module_sp->LogMessage( |
2421 | log, |
2422 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) " |
2423 | "caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u" |
2424 | ", alignment = %" PRIu64"l" "u" |
2425 | ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", |
2426 | static_cast<void *>(clang_type.GetOpaqueQualType()), |
2427 | static_cast<void *>(record_decl), layout_info.bit_size, |
2428 | layout_info.alignment, |
2429 | static_cast<uint32_t>(layout_info.field_offsets.size()), |
2430 | static_cast<uint32_t>(layout_info.base_offsets.size()), |
2431 | static_cast<uint32_t>(layout_info.vbase_offsets.size())); |
2432 | |
2433 | uint32_t idx; |
2434 | { |
2435 | llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator |
2436 | pos, |
2437 | end = layout_info.field_offsets.end(); |
2438 | for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; |
2439 | ++pos, ++idx) { |
2440 | module_sp->LogMessage( |
2441 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2442 | "%p) field[%u] = { bit_offset=%u, name='%s' }", |
2443 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
2444 | static_cast<uint32_t>(pos->second), |
2445 | pos->first->getNameAsString().c_str()); |
2446 | } |
2447 | } |
2448 | |
2449 | { |
2450 | llvm::DenseMap<const clang::CXXRecordDecl *, |
2451 | clang::CharUnits>::const_iterator base_pos, |
2452 | base_end = layout_info.base_offsets.end(); |
2453 | for (idx = 0, base_pos = layout_info.base_offsets.begin(); |
2454 | base_pos != base_end; ++base_pos, ++idx) { |
2455 | module_sp->LogMessage( |
2456 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2457 | "%p) base[%u] = { byte_offset=%u, name='%s' }", |
2458 | clang_type.GetOpaqueQualType(), idx, |
2459 | (uint32_t)base_pos->second.getQuantity(), |
2460 | base_pos->first->getNameAsString().c_str()); |
2461 | } |
2462 | } |
2463 | { |
2464 | llvm::DenseMap<const clang::CXXRecordDecl *, |
2465 | clang::CharUnits>::const_iterator vbase_pos, |
2466 | vbase_end = layout_info.vbase_offsets.end(); |
2467 | for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); |
2468 | vbase_pos != vbase_end; ++vbase_pos, ++idx) { |
2469 | module_sp->LogMessage( |
2470 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
2471 | "%p) vbase[%u] = { byte_offset=%u, name='%s' }", |
2472 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
2473 | static_cast<uint32_t>(vbase_pos->second.getQuantity()), |
2474 | vbase_pos->first->getNameAsString().c_str()); |
2475 | } |
2476 | } |
2477 | } |
2478 | } |
2479 | GetClangASTImporter().InsertRecordDecl(record_decl, layout_info); |
2480 | } |
2481 | } |
2482 | } |
2483 | |
2484 | return (bool)clang_type; |
2485 | |
2486 | case DW_TAG_enumeration_type: |
2487 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
2488 | if (die.HasChildren()) { |
2489 | SymbolContext sc(die.GetLLDBCompileUnit()); |
2490 | bool is_signed = false; |
2491 | clang_type.IsIntegerType(is_signed); |
2492 | ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), |
2493 | die); |
2494 | } |
2495 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
2496 | } |
2497 | return (bool)clang_type; |
2498 | |
2499 | default: |
2500 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2500, __extension__ __PRETTY_FUNCTION__)); |
2501 | break; |
2502 | } |
2503 | |
2504 | return false; |
2505 | } |
2506 | |
2507 | std::vector<DWARFDIE> DWARFASTParserClang::GetDIEForDeclContext( |
2508 | lldb_private::CompilerDeclContext decl_context) { |
2509 | std::vector<DWARFDIE> result; |
2510 | for (auto it = m_decl_ctx_to_die.find( |
2511 | (clang::DeclContext *)decl_context.GetOpaqueDeclContext()); |
2512 | it != m_decl_ctx_to_die.end(); it++) |
2513 | result.push_back(it->second); |
2514 | return result; |
2515 | } |
2516 | |
2517 | CompilerDecl DWARFASTParserClang::GetDeclForUIDFromDWARF(const DWARFDIE &die) { |
2518 | clang::Decl *clang_decl = GetClangDeclForDIE(die); |
2519 | if (clang_decl != nullptr) |
2520 | return CompilerDecl(&m_ast, clang_decl); |
2521 | return CompilerDecl(); |
2522 | } |
2523 | |
2524 | CompilerDeclContext |
2525 | DWARFASTParserClang::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) { |
2526 | clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die); |
2527 | if (clang_decl_ctx) |
2528 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2529 | return CompilerDeclContext(); |
2530 | } |
2531 | |
2532 | CompilerDeclContext |
2533 | DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) { |
2534 | clang::DeclContext *clang_decl_ctx = |
2535 | GetClangDeclContextContainingDIE(die, nullptr); |
2536 | if (clang_decl_ctx) |
2537 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2538 | return CompilerDeclContext(); |
2539 | } |
2540 | |
2541 | size_t DWARFASTParserClang::ParseChildEnumerators( |
2542 | const SymbolContext &sc, lldb_private::CompilerType &clang_type, |
2543 | bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die) { |
2544 | if (!parent_die) |
2545 | return 0; |
2546 | |
2547 | size_t enumerators_added = 0; |
2548 | |
2549 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2550 | die = die.GetSibling()) { |
2551 | const dw_tag_t tag = die.Tag(); |
2552 | if (tag == DW_TAG_enumerator) { |
2553 | DWARFAttributes attributes; |
2554 | const size_t num_child_attributes = die.GetAttributes(attributes); |
2555 | if (num_child_attributes > 0) { |
2556 | const char *name = NULL__null; |
2557 | bool got_value = false; |
2558 | int64_t enum_value = 0; |
2559 | Declaration decl; |
2560 | |
2561 | uint32_t i; |
2562 | for (i = 0; i < num_child_attributes; ++i) { |
2563 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2564 | DWARFFormValue form_value; |
2565 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2566 | switch (attr) { |
2567 | case DW_AT_const_value: |
2568 | got_value = true; |
2569 | if (is_signed) |
2570 | enum_value = form_value.Signed(); |
2571 | else |
2572 | enum_value = form_value.Unsigned(); |
2573 | break; |
2574 | |
2575 | case DW_AT_name: |
2576 | name = form_value.AsCString(); |
2577 | break; |
2578 | |
2579 | case DW_AT_description: |
2580 | default: |
2581 | case DW_AT_decl_file: |
2582 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
2583 | form_value.Unsigned())); |
2584 | break; |
2585 | case DW_AT_decl_line: |
2586 | decl.SetLine(form_value.Unsigned()); |
2587 | break; |
2588 | case DW_AT_decl_column: |
2589 | decl.SetColumn(form_value.Unsigned()); |
2590 | break; |
2591 | case DW_AT_sibling: |
2592 | break; |
2593 | } |
2594 | } |
2595 | } |
2596 | |
2597 | if (name && name[0] && got_value) { |
2598 | m_ast.AddEnumerationValueToEnumerationType( |
2599 | clang_type.GetOpaqueQualType(), |
2600 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), |
2601 | decl, name, enum_value, enumerator_byte_size * 8); |
2602 | ++enumerators_added; |
2603 | } |
2604 | } |
2605 | } |
2606 | } |
2607 | return enumerators_added; |
2608 | } |
2609 | |
2610 | #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE1) |
2611 | |
2612 | class DIEStack { |
2613 | public: |
2614 | void Push(const DWARFDIE &die) { m_dies.push_back(die); } |
2615 | |
2616 | void LogDIEs(Log *log) { |
2617 | StreamString log_strm; |
2618 | const size_t n = m_dies.size(); |
2619 | log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n); |
2620 | for (size_t i = 0; i < n; i++) { |
2621 | std::string qualified_name; |
2622 | const DWARFDIE &die = m_dies[i]; |
2623 | die.GetQualifiedName(qualified_name); |
2624 | log_strm.Printf("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n", (uint64_t)i, |
2625 | die.GetOffset(), die.GetTagAsCString(), |
2626 | qualified_name.c_str()); |
2627 | } |
2628 | log->PutCString(log_strm.GetData()); |
2629 | } |
2630 | void Pop() { m_dies.pop_back(); } |
2631 | |
2632 | class ScopedPopper { |
2633 | public: |
2634 | ScopedPopper(DIEStack &die_stack) |
2635 | : m_die_stack(die_stack), m_valid(false) {} |
2636 | |
2637 | void Push(const DWARFDIE &die) { |
2638 | m_valid = true; |
2639 | m_die_stack.Push(die); |
2640 | } |
2641 | |
2642 | ~ScopedPopper() { |
2643 | if (m_valid) |
2644 | m_die_stack.Pop(); |
2645 | } |
2646 | |
2647 | protected: |
2648 | DIEStack &m_die_stack; |
2649 | bool m_valid; |
2650 | }; |
2651 | |
2652 | protected: |
2653 | typedef std::vector<DWARFDIE> Stack; |
2654 | Stack m_dies; |
2655 | }; |
2656 | #endif |
2657 | |
2658 | Function *DWARFASTParserClang::ParseFunctionFromDWARF(const SymbolContext &sc, |
2659 | const DWARFDIE &die) { |
2660 | DWARFRangeList func_ranges; |
2661 | const char *name = NULL__null; |
2662 | const char *mangled = NULL__null; |
2663 | int decl_file = 0; |
2664 | int decl_line = 0; |
2665 | int decl_column = 0; |
2666 | int call_file = 0; |
2667 | int call_line = 0; |
2668 | int call_column = 0; |
2669 | DWARFExpression frame_base(die.GetCU()); |
2670 | |
2671 | const dw_tag_t tag = die.Tag(); |
2672 | |
2673 | if (tag != DW_TAG_subprogram) |
2674 | return NULL__null; |
2675 | |
2676 | if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line, |
2677 | decl_column, call_file, call_line, call_column, |
2678 | &frame_base)) { |
2679 | |
2680 | // Union of all ranges in the function DIE (if the function is |
2681 | // discontiguous) |
2682 | AddressRange func_range; |
2683 | lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0); |
2684 | lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0); |
2685 | if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) && |
2686 | lowest_func_addr <= highest_func_addr) { |
2687 | ModuleSP module_sp(die.GetModule()); |
2688 | func_range.GetBaseAddress().ResolveAddressUsingFileSections( |
2689 | lowest_func_addr, module_sp->GetSectionList()); |
2690 | if (func_range.GetBaseAddress().IsValid()) |
2691 | func_range.SetByteSize(highest_func_addr - lowest_func_addr); |
2692 | } |
2693 | |
2694 | if (func_range.GetBaseAddress().IsValid()) { |
2695 | Mangled func_name; |
2696 | if (mangled) |
2697 | func_name.SetValue(ConstString(mangled), true); |
2698 | else if (die.GetParent().Tag() == DW_TAG_compile_unit && |
2699 | Language::LanguageIsCPlusPlus(die.GetLanguage()) && name && |
2700 | strcmp(name, "main") != 0) { |
2701 | // If the mangled name is not present in the DWARF, generate the |
2702 | // demangled name |
2703 | // using the decl context. We skip if the function is "main" as its name |
2704 | // is |
2705 | // never mangled. |
2706 | bool is_static = false; |
2707 | bool is_variadic = false; |
2708 | bool has_template_params = false; |
2709 | unsigned type_quals = 0; |
2710 | std::vector<CompilerType> param_types; |
2711 | std::vector<clang::ParmVarDecl *> param_decls; |
2712 | DWARFDeclContext decl_ctx; |
2713 | StreamString sstr; |
2714 | |
2715 | die.GetDWARFDeclContext(decl_ctx); |
2716 | sstr << decl_ctx.GetQualifiedName(); |
2717 | |
2718 | clang::DeclContext *containing_decl_ctx = |
2719 | GetClangDeclContextContainingDIE(die, nullptr); |
2720 | ParseChildParameters(sc, containing_decl_ctx, die, true, is_static, |
2721 | is_variadic, has_template_params, param_types, |
2722 | param_decls, type_quals); |
2723 | sstr << "("; |
2724 | for (size_t i = 0; i < param_types.size(); i++) { |
2725 | if (i > 0) |
2726 | sstr << ", "; |
2727 | sstr << param_types[i].GetTypeName(); |
2728 | } |
2729 | if (is_variadic) |
2730 | sstr << ", ..."; |
2731 | sstr << ")"; |
2732 | if (type_quals & clang::Qualifiers::Const) |
2733 | sstr << " const"; |
2734 | |
2735 | func_name.SetValue(ConstString(sstr.GetString()), false); |
2736 | } else |
2737 | func_name.SetValue(ConstString(name), false); |
2738 | |
2739 | FunctionSP func_sp; |
2740 | std::unique_ptr<Declaration> decl_ap; |
2741 | if (decl_file != 0 || decl_line != 0 || decl_column != 0) |
2742 | decl_ap.reset(new Declaration( |
2743 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), |
2744 | decl_line, decl_column)); |
2745 | |
2746 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
2747 | // Supply the type _only_ if it has already been parsed |
2748 | Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE()); |
2749 | |
2750 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2750, __extension__ __PRETTY_FUNCTION__)); |
2751 | |
2752 | if (dwarf->FixupAddress(func_range.GetBaseAddress())) { |
2753 | const user_id_t func_user_id = die.GetID(); |
2754 | func_sp.reset(new Function(sc.comp_unit, |
2755 | func_user_id, // UserID is the DIE offset |
2756 | func_user_id, func_name, func_type, |
2757 | func_range)); // first address range |
2758 | |
2759 | if (func_sp.get() != NULL__null) { |
2760 | if (frame_base.IsValid()) |
2761 | func_sp->GetFrameBaseExpression() = frame_base; |
2762 | sc.comp_unit->AddFunction(func_sp); |
2763 | return func_sp.get(); |
2764 | } |
2765 | } |
2766 | } |
2767 | } |
2768 | return NULL__null; |
2769 | } |
2770 | |
2771 | bool DWARFASTParserClang::ParseChildMembers( |
2772 | const SymbolContext &sc, const DWARFDIE &parent_die, |
2773 | CompilerType &class_clang_type, const LanguageType class_language, |
2774 | std::vector<clang::CXXBaseSpecifier *> &base_classes, |
2775 | std::vector<int> &member_accessibilities, |
2776 | DWARFDIECollection &member_function_dies, |
2777 | DelayedPropertyList &delayed_properties, AccessType &default_accessibility, |
2778 | bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) { |
2779 | if (!parent_die) |
2780 | return 0; |
2781 | |
2782 | // Get the parent byte size so we can verify any members will fit |
2783 | const uint64_t parent_byte_size = |
2784 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX(18446744073709551615UL)); |
2785 | const uint64_t parent_bit_size = |
2786 | parent_byte_size == UINT64_MAX(18446744073709551615UL) ? UINT64_MAX(18446744073709551615UL) : parent_byte_size * 8; |
2787 | |
2788 | uint32_t member_idx = 0; |
2789 | BitfieldInfo last_field_info; |
2790 | |
2791 | ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); |
2792 | ClangASTContext *ast = |
2793 | llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem()); |
2794 | if (ast == nullptr) |
2795 | return 0; |
2796 | |
2797 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
2798 | die = die.GetSibling()) { |
2799 | dw_tag_t tag = die.Tag(); |
2800 | |
2801 | switch (tag) { |
2802 | case DW_TAG_member: |
2803 | case DW_TAG_APPLE_property: { |
2804 | DWARFAttributes attributes; |
2805 | const size_t num_attributes = die.GetAttributes(attributes); |
2806 | if (num_attributes > 0) { |
2807 | Declaration decl; |
2808 | // DWARFExpression location; |
2809 | const char *name = NULL__null; |
2810 | const char *prop_name = NULL__null; |
2811 | const char *prop_getter_name = NULL__null; |
2812 | const char *prop_setter_name = NULL__null; |
2813 | uint32_t prop_attributes = 0; |
2814 | |
2815 | bool is_artificial = false; |
2816 | DWARFFormValue encoding_form; |
2817 | AccessType accessibility = eAccessNone; |
2818 | uint32_t member_byte_offset = |
2819 | (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX(4294967295U); |
2820 | size_t byte_size = 0; |
2821 | int64_t bit_offset = 0; |
2822 | uint64_t data_bit_offset = UINT64_MAX(18446744073709551615UL); |
2823 | size_t bit_size = 0; |
2824 | bool is_external = |
2825 | false; // On DW_TAG_members, this means the member is static |
2826 | uint32_t i; |
2827 | for (i = 0; i < num_attributes && !is_artificial; ++i) { |
2828 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2829 | DWARFFormValue form_value; |
2830 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
2831 | switch (attr) { |
2832 | case DW_AT_decl_file: |
2833 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
2834 | form_value.Unsigned())); |
2835 | break; |
2836 | case DW_AT_decl_line: |
2837 | decl.SetLine(form_value.Unsigned()); |
2838 | break; |
2839 | case DW_AT_decl_column: |
2840 | decl.SetColumn(form_value.Unsigned()); |
2841 | break; |
2842 | case DW_AT_name: |
2843 | name = form_value.AsCString(); |
2844 | break; |
2845 | case DW_AT_type: |
2846 | encoding_form = form_value; |
2847 | break; |
2848 | case DW_AT_bit_offset: |
2849 | bit_offset = form_value.Signed(); |
2850 | break; |
2851 | case DW_AT_bit_size: |
2852 | bit_size = form_value.Unsigned(); |
2853 | break; |
2854 | case DW_AT_byte_size: |
2855 | byte_size = form_value.Unsigned(); |
2856 | break; |
2857 | case DW_AT_data_bit_offset: |
2858 | data_bit_offset = form_value.Unsigned(); |
2859 | break; |
2860 | case DW_AT_data_member_location: |
2861 | if (form_value.BlockData()) { |
2862 | Value initialValue(0); |
2863 | Value memberOffset(0); |
2864 | const DWARFDataExtractor &debug_info_data = |
2865 | die.GetDWARF()->get_debug_info_data(); |
2866 | uint32_t block_length = form_value.Unsigned(); |
2867 | uint32_t block_offset = |
2868 | form_value.BlockData() - debug_info_data.GetDataStart(); |
2869 | if (DWARFExpression::Evaluate( |
2870 | nullptr, // ExecutionContext * |
2871 | nullptr, // RegisterContext * |
2872 | module_sp, debug_info_data, die.GetCU(), block_offset, |
2873 | block_length, eRegisterKindDWARF, &initialValue, |
2874 | nullptr, memberOffset, nullptr)) { |
2875 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
2876 | } |
2877 | } else { |
2878 | // With DWARF 3 and later, if the value is an integer constant, |
2879 | // this form value is the offset in bytes from the beginning |
2880 | // of the containing entity. |
2881 | member_byte_offset = form_value.Unsigned(); |
2882 | } |
2883 | break; |
2884 | |
2885 | case DW_AT_accessibility: |
2886 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
2887 | break; |
2888 | case DW_AT_artificial: |
2889 | is_artificial = form_value.Boolean(); |
2890 | break; |
2891 | case DW_AT_APPLE_property_name: |
2892 | prop_name = form_value.AsCString(); |
2893 | break; |
2894 | case DW_AT_APPLE_property_getter: |
2895 | prop_getter_name = form_value.AsCString(); |
2896 | break; |
2897 | case DW_AT_APPLE_property_setter: |
2898 | prop_setter_name = form_value.AsCString(); |
2899 | break; |
2900 | case DW_AT_APPLE_property_attribute: |
2901 | prop_attributes = form_value.Unsigned(); |
2902 | break; |
2903 | case DW_AT_external: |
2904 | is_external = form_value.Boolean(); |
2905 | break; |
2906 | |
2907 | default: |
2908 | case DW_AT_declaration: |
2909 | case DW_AT_description: |
2910 | case DW_AT_mutable: |
2911 | case DW_AT_visibility: |
2912 | case DW_AT_sibling: |
2913 | break; |
2914 | } |
2915 | } |
2916 | } |
2917 | |
2918 | if (prop_name) { |
2919 | ConstString fixed_getter; |
2920 | ConstString fixed_setter; |
2921 | |
2922 | // Check if the property getter/setter were provided as full |
2923 | // names. We want basenames, so we extract them. |
2924 | |
2925 | if (prop_getter_name && prop_getter_name[0] == '-') { |
2926 | ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true); |
2927 | prop_getter_name = prop_getter_method.GetSelector().GetCString(); |
2928 | } |
2929 | |
2930 | if (prop_setter_name && prop_setter_name[0] == '-') { |
2931 | ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true); |
2932 | prop_setter_name = prop_setter_method.GetSelector().GetCString(); |
2933 | } |
2934 | |
2935 | // If the names haven't been provided, they need to be |
2936 | // filled in. |
2937 | |
2938 | if (!prop_getter_name) { |
2939 | prop_getter_name = prop_name; |
2940 | } |
2941 | if (!prop_setter_name && prop_name[0] && |
2942 | !(prop_attributes & DW_APPLE_PROPERTY_readonly)) { |
2943 | StreamString ss; |
2944 | |
2945 | ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]); |
2946 | |
2947 | fixed_setter.SetString(ss.GetString()); |
2948 | prop_setter_name = fixed_setter.GetCString(); |
2949 | } |
2950 | } |
2951 | |
2952 | // Clang has a DWARF generation bug where sometimes it |
2953 | // represents fields that are references with bad byte size |
2954 | // and bit size/offset information such as: |
2955 | // |
2956 | // DW_AT_byte_size( 0x00 ) |
2957 | // DW_AT_bit_size( 0x40 ) |
2958 | // DW_AT_bit_offset( 0xffffffffffffffc0 ) |
2959 | // |
2960 | // So check the bit offset to make sure it is sane, and if |
2961 | // the values are not sane, remove them. If we don't do this |
2962 | // then we will end up with a crash if we try to use this |
2963 | // type in an expression when clang becomes unhappy with its |
2964 | // recycled debug info. |
2965 | |
2966 | if (byte_size == 0 && bit_offset < 0) { |
2967 | bit_size = 0; |
2968 | bit_offset = 0; |
2969 | } |
2970 | |
2971 | // FIXME: Make Clang ignore Objective-C accessibility for expressions |
2972 | if (class_language == eLanguageTypeObjC || |
2973 | class_language == eLanguageTypeObjC_plus_plus) |
2974 | accessibility = eAccessNone; |
2975 | |
2976 | if (member_idx == 0 && !is_artificial && name && |
2977 | (strstr(name, "_vptr$") == name)) { |
2978 | // Not all compilers will mark the vtable pointer |
2979 | // member as artificial (llvm-gcc). We can't have |
2980 | // the virtual members in our classes otherwise it |
2981 | // throws off all child offsets since we end up |
2982 | // having and extra pointer sized member in our |
2983 | // class layouts. |
2984 | is_artificial = true; |
2985 | } |
2986 | |
2987 | // Handle static members |
2988 | if (is_external && member_byte_offset == UINT32_MAX(4294967295U)) { |
2989 | Type *var_type = die.ResolveTypeUID(DIERef(encoding_form)); |
2990 | |
2991 | if (var_type) { |
2992 | if (accessibility == eAccessNone) |
2993 | accessibility = eAccessPublic; |
2994 | ClangASTContext::AddVariableToRecordType( |
2995 | class_clang_type, name, var_type->GetLayoutCompilerType(), |
2996 | accessibility); |
2997 | } |
2998 | break; |
2999 | } |
3000 | |
3001 | if (is_artificial == false) { |
3002 | Type *member_type = die.ResolveTypeUID(DIERef(encoding_form)); |
3003 | |
3004 | clang::FieldDecl *field_decl = NULL__null; |
3005 | if (tag == DW_TAG_member) { |
3006 | if (member_type) { |
3007 | if (accessibility == eAccessNone) |
3008 | accessibility = default_accessibility; |
3009 | member_accessibilities.push_back(accessibility); |
3010 | |
3011 | uint64_t field_bit_offset = |
3012 | (member_byte_offset == UINT32_MAX(4294967295U) ? 0 |
3013 | : (member_byte_offset * 8)); |
3014 | if (bit_size > 0) { |
3015 | |
3016 | BitfieldInfo this_field_info; |
3017 | this_field_info.bit_offset = field_bit_offset; |
3018 | this_field_info.bit_size = bit_size; |
3019 | |
3020 | ///////////////////////////////////////////////////////////// |
3021 | // How to locate a field given the DWARF debug information |
3022 | // |
3023 | // AT_byte_size indicates the size of the word in which the |
3024 | // bit offset must be interpreted. |
3025 | // |
3026 | // AT_data_member_location indicates the byte offset of the |
3027 | // word from the base address of the structure. |
3028 | // |
3029 | // AT_bit_offset indicates how many bits into the word |
3030 | // (according to the host endianness) the low-order bit of |
3031 | // the field starts. AT_bit_offset can be negative. |
3032 | // |
3033 | // AT_bit_size indicates the size of the field in bits. |
3034 | ///////////////////////////////////////////////////////////// |
3035 | |
3036 | if (data_bit_offset != UINT64_MAX(18446744073709551615UL)) { |
3037 | this_field_info.bit_offset = data_bit_offset; |
3038 | } else { |
3039 | if (byte_size == 0) |
3040 | byte_size = member_type->GetByteSize(); |
3041 | |
3042 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
3043 | if (objfile->GetByteOrder() == eByteOrderLittle) { |
3044 | this_field_info.bit_offset += byte_size * 8; |
3045 | this_field_info.bit_offset -= (bit_offset + bit_size); |
3046 | } else { |
3047 | this_field_info.bit_offset += bit_offset; |
3048 | } |
3049 | } |
3050 | |
3051 | if ((this_field_info.bit_offset >= parent_bit_size) || |
3052 | !last_field_info.NextBitfieldOffsetIsValid( |
3053 | this_field_info.bit_offset)) { |
3054 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
3055 | objfile->GetModule()->ReportWarning( |
3056 | "0x%8.8" PRIx64"l" "x" ": %s bitfield named \"%s\" has invalid " |
3057 | "bit offset (0x%8.8" PRIx64"l" "x" |
3058 | ") member will be ignored. Please file a bug against the " |
3059 | "compiler and include the preprocessed output for %s\n", |
3060 | die.GetID(), DW_TAG_value_to_name(tag), name, |
3061 | this_field_info.bit_offset, |
3062 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
3063 | : "the source file"); |
3064 | this_field_info.Clear(); |
3065 | continue; |
3066 | } |
3067 | |
3068 | // Update the field bit offset we will report for layout |
3069 | field_bit_offset = this_field_info.bit_offset; |
3070 | |
3071 | // If the member to be emitted did not start on a character |
3072 | // boundary and there is |
3073 | // empty space between the last field and this one, then we need |
3074 | // to emit an |
3075 | // anonymous member filling up the space up to its start. There |
3076 | // are three cases |
3077 | // here: |
3078 | // |
3079 | // 1 If the previous member ended on a character boundary, then |
3080 | // we can emit an |
3081 | // anonymous member starting at the most recent character |
3082 | // boundary. |
3083 | // |
3084 | // 2 If the previous member did not end on a character boundary |
3085 | // and the distance |
3086 | // from the end of the previous member to the current member |
3087 | // is less than a |
3088 | // word width, then we can emit an anonymous member starting |
3089 | // right after the |
3090 | // previous member and right before this member. |
3091 | // |
3092 | // 3 If the previous member did not end on a character boundary |
3093 | // and the distance |
3094 | // from the end of the previous member to the current member |
3095 | // is greater than |
3096 | // or equal a word width, then we act as in Case 1. |
3097 | |
3098 | const uint64_t character_width = 8; |
3099 | const uint64_t word_width = 32; |
3100 | |
3101 | // Objective-C has invalid DW_AT_bit_offset values in older |
3102 | // versions |
3103 | // of clang, so we have to be careful and only insert unnamed |
3104 | // bitfields |
3105 | // if we have a new enough clang. |
3106 | bool detect_unnamed_bitfields = true; |
3107 | |
3108 | if (class_language == eLanguageTypeObjC || |
3109 | class_language == eLanguageTypeObjC_plus_plus) |
3110 | detect_unnamed_bitfields = |
3111 | die.GetCU()->Supports_unnamed_objc_bitfields(); |
3112 | |
3113 | if (detect_unnamed_bitfields) { |
3114 | BitfieldInfo anon_field_info; |
3115 | |
3116 | if ((this_field_info.bit_offset % character_width) != |
3117 | 0) // not char aligned |
3118 | { |
3119 | uint64_t last_field_end = 0; |
3120 | |
3121 | if (last_field_info.IsValid()) |
3122 | last_field_end = |
3123 | last_field_info.bit_offset + last_field_info.bit_size; |
3124 | |
3125 | if (this_field_info.bit_offset != last_field_end) { |
3126 | if (((last_field_end % character_width) == 0) || // case 1 |
3127 | (this_field_info.bit_offset - last_field_end >= |
3128 | word_width)) // case 3 |
3129 | { |
3130 | anon_field_info.bit_size = |
3131 | this_field_info.bit_offset % character_width; |
3132 | anon_field_info.bit_offset = |
3133 | this_field_info.bit_offset - |
3134 | anon_field_info.bit_size; |
3135 | } else // case 2 |
3136 | { |
3137 | anon_field_info.bit_size = |
3138 | this_field_info.bit_offset - last_field_end; |
3139 | anon_field_info.bit_offset = last_field_end; |
3140 | } |
3141 | } |
3142 | } |
3143 | |
3144 | if (anon_field_info.IsValid()) { |
3145 | clang::FieldDecl *unnamed_bitfield_decl = |
3146 | ClangASTContext::AddFieldToRecordType( |
3147 | class_clang_type, NULL__null, |
3148 | m_ast.GetBuiltinTypeForEncodingAndBitSize( |
3149 | eEncodingSint, word_width), |
3150 | accessibility, anon_field_info.bit_size); |
3151 | |
3152 | layout_info.field_offsets.insert(std::make_pair( |
3153 | unnamed_bitfield_decl, anon_field_info.bit_offset)); |
3154 | } |
3155 | } |
3156 | last_field_info = this_field_info; |
3157 | } else { |
3158 | last_field_info.Clear(); |
3159 | } |
3160 | |
3161 | CompilerType member_clang_type = |
3162 | member_type->GetLayoutCompilerType(); |
3163 | if (!member_clang_type.IsCompleteType()) |
3164 | member_clang_type.GetCompleteType(); |
3165 | |
3166 | { |
3167 | // Older versions of clang emit array[0] and array[1] in the |
3168 | // same way (<rdar://problem/12566646>). |
3169 | // If the current field is at the end of the structure, then |
3170 | // there is definitely no room for extra |
3171 | // elements and we override the type to array[0]. |
3172 | |
3173 | CompilerType member_array_element_type; |
3174 | uint64_t member_array_size; |
3175 | bool member_array_is_incomplete; |
3176 | |
3177 | if (member_clang_type.IsArrayType( |
3178 | &member_array_element_type, &member_array_size, |
3179 | &member_array_is_incomplete) && |
3180 | !member_array_is_incomplete) { |
3181 | uint64_t parent_byte_size = |
3182 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, |
3183 | UINT64_MAX(18446744073709551615UL)); |
3184 | |
3185 | if (member_byte_offset >= parent_byte_size) { |
3186 | if (member_array_size != 1 && |
3187 | (member_array_size != 0 || |
3188 | member_byte_offset > parent_byte_size)) { |
3189 | module_sp->ReportError( |
3190 | "0x%8.8" PRIx64"l" "x" |
3191 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
3192 | " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x", |
3193 | die.GetID(), name, encoding_form.Reference(), |
3194 | parent_die.GetID()); |
3195 | } |
3196 | |
3197 | member_clang_type = m_ast.CreateArrayType( |
3198 | member_array_element_type, 0, false); |
3199 | } |
3200 | } |
3201 | } |
3202 | |
3203 | if (ClangASTContext::IsCXXClassType(member_clang_type) && |
3204 | member_clang_type.GetCompleteType() == false) { |
3205 | if (die.GetCU()->GetProducer() == eProducerClang) |
3206 | module_sp->ReportError( |
3207 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3208 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
3209 | "complete definition.\nTry compiling the source file " |
3210 | "with -fstandalone-debug", |
3211 | parent_die.GetOffset(), parent_die.GetName(), |
3212 | die.GetOffset(), name); |
3213 | else |
3214 | module_sp->ReportError( |
3215 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3216 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
3217 | "complete definition.\nPlease file a bug against the " |
3218 | "compiler and include the preprocessed output for %s", |
3219 | parent_die.GetOffset(), parent_die.GetName(), |
3220 | die.GetOffset(), name, |
3221 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
3222 | : "the source file"); |
3223 | // We have no choice other than to pretend that the member class |
3224 | // is complete. If we don't do this, clang will crash when |
3225 | // trying |
3226 | // to layout the class. Since we provide layout assistance, all |
3227 | // ivars in this class and other classes will be fine, this is |
3228 | // the best we can do short of crashing. |
3229 | if (ClangASTContext::StartTagDeclarationDefinition( |
3230 | member_clang_type)) { |
3231 | ClangASTContext::CompleteTagDeclarationDefinition( |
3232 | member_clang_type); |
3233 | } else { |
3234 | module_sp->ReportError( |
3235 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
3236 | "0x%8.8x (%s) whose type claims to be a C++ class but we " |
3237 | "were not able to start its definition.\nPlease file a " |
3238 | "bug and attach the file at the start of this error " |
3239 | "message", |
3240 | parent_die.GetOffset(), parent_die.GetName(), |
3241 | die.GetOffset(), name); |
3242 | } |
3243 | } |
3244 | |
3245 | field_decl = ClangASTContext::AddFieldToRecordType( |
3246 | class_clang_type, name, member_clang_type, accessibility, |
3247 | bit_size); |
3248 | |
3249 | m_ast.SetMetadataAsUserID(field_decl, die.GetID()); |
3250 | |
3251 | layout_info.field_offsets.insert( |
3252 | std::make_pair(field_decl, field_bit_offset)); |
3253 | } else { |
3254 | if (name) |
3255 | module_sp->ReportError( |
3256 | "0x%8.8" PRIx64"l" "x" |
3257 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
3258 | " which was unable to be parsed", |
3259 | die.GetID(), name, encoding_form.Reference()); |
3260 | else |
3261 | module_sp->ReportError( |
3262 | "0x%8.8" PRIx64"l" "x" |
3263 | ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x" |
3264 | " which was unable to be parsed", |
3265 | die.GetID(), encoding_form.Reference()); |
3266 | } |
3267 | } |
3268 | |
3269 | if (prop_name != NULL__null && member_type) { |
3270 | clang::ObjCIvarDecl *ivar_decl = NULL__null; |
3271 | |
3272 | if (field_decl) { |
3273 | ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); |
3274 | assert(ivar_decl != NULL)(static_cast <bool> (ivar_decl != __null) ? void (0) : __assert_fail ("ivar_decl != NULL", "/build/llvm-toolchain-snapshot-7~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3274, __extension__ __PRETTY_FUNCTION__)); |
3275 | } |
3276 | |
3277 | ClangASTMetadata metadata; |
3278 | metadata.SetUserID(die.GetID()); |
3279 | delayed_properties.push_back(DelayedAddObjCClassProperty( |
3280 | class_clang_type, prop_name, |
3281 | member_type->GetLayoutCompilerType(), ivar_decl, |
3282 | prop_setter_name, prop_getter_name, prop_attributes, |
3283 | &metadata)); |
3284 | |
3285 | if (ivar_decl) |
3286 | m_ast.SetMetadataAsUserID(ivar_decl, die.GetID()); |
3287 | } |
3288 | } |
3289 | } |
3290 | ++member_idx; |
3291 | } break; |
3292 | |
3293 | case DW_TAG_subprogram: |
3294 | // Let the type parsing code handle this one for us. |
3295 | member_function_dies.Append(die); |
3296 | break; |
3297 | |
3298 | case DW_TAG_inheritance: { |
3299 | is_a_class = true; |
3300 | if (default_accessibility == eAccessNone) |
3301 | default_accessibility = eAccessPrivate; |
3302 | // TODO: implement DW_TAG_inheritance type parsing |
3303 | DWARFAttributes attributes; |
3304 | const size_t num_attributes = die.GetAttributes(attributes); |
3305 | if (num_attributes > 0) { |
3306 | Declaration decl; |
3307 | DWARFExpression location(die.GetCU()); |
3308 | DWARFFormValue encoding_form; |
3309 | AccessType accessibility = default_accessibility; |
3310 | bool is_virtual = false; |
3311 | bool is_base_of_class = true; |
3312 | off_t member_byte_offset = 0; |
3313 | uint32_t i; |
3314 | for (i = 0; i < num_attributes; ++i) { |
3315 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3316 | DWARFFormValue form_value; |
3317 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3318 | switch (attr) { |
3319 | case DW_AT_decl_file: |
3320 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
3321 | form_value.Unsigned())); |
3322 | break; |
3323 | case DW_AT_decl_line: |
3324 | decl.SetLine(form_value.Unsigned()); |
3325 | break; |
3326 | case DW_AT_decl_column: |
3327 | decl.SetColumn(form_value.Unsigned()); |
3328 | break; |
3329 | case DW_AT_type: |
3330 | encoding_form = form_value; |
3331 | break; |
3332 | case DW_AT_data_member_location: |
3333 | if (form_value.BlockData()) { |
3334 | Value initialValue(0); |
3335 | Value memberOffset(0); |
3336 | const DWARFDataExtractor &debug_info_data = |
3337 | die.GetDWARF()->get_debug_info_data(); |
3338 | uint32_t block_length = form_value.Unsigned(); |
3339 | uint32_t block_offset = |
3340 | form_value.BlockData() - debug_info_data.GetDataStart(); |
3341 | if (DWARFExpression::Evaluate(nullptr, nullptr, module_sp, |
3342 | debug_info_data, die.GetCU(), |
3343 | block_offset, block_length, |
3344 | eRegisterKindDWARF, &initialValue, |
3345 | nullptr, memberOffset, nullptr)) { |
3346 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
3347 | } |
3348 | } else { |
3349 | // With DWARF 3 and later, if the value is an integer constant, |
3350 | // this form value is the offset in bytes from the beginning |
3351 | // of the containing entity. |
3352 | member_byte_offset = form_value.Unsigned(); |
3353 | } |
3354 | break; |
3355 | |
3356 | case DW_AT_accessibility: |
3357 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
3358 | break; |
3359 | |
3360 | case DW_AT_virtuality: |
3361 | is_virtual = form_value.Boolean(); |
3362 | break; |
3363 | |
3364 | case DW_AT_sibling: |
3365 | break; |
3366 | |
3367 | default: |
3368 | break; |
3369 | } |
3370 | } |
3371 | } |
3372 | |
3373 | Type *base_class_type = die.ResolveTypeUID(DIERef(encoding_form)); |
3374 | if (base_class_type == NULL__null) { |
3375 | module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to " |
3376 | "resolve the base class at 0x%8.8" PRIx64"l" "x" |
3377 | " from enclosing type 0x%8.8x. \nPlease file " |
3378 | "a bug and attach the file at the start of " |
3379 | "this error message", |
3380 | die.GetOffset(), encoding_form.Reference(), |
3381 | parent_die.GetOffset()); |
3382 | break; |
3383 | } |
3384 | |
3385 | CompilerType base_class_clang_type = |
3386 | base_class_type->GetFullCompilerType(); |
3387 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3387, __extension__ __PRETTY_FUNCTION__)); |
3388 | if (class_language == eLanguageTypeObjC) { |
3389 | ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); |
3390 | } else { |
3391 | base_classes.push_back(ast->CreateBaseClassSpecifier( |
3392 | base_class_clang_type.GetOpaqueQualType(), accessibility, |
3393 | is_virtual, is_base_of_class)); |
3394 | |
3395 | if (is_virtual) { |
3396 | // Do not specify any offset for virtual inheritance. The DWARF |
3397 | // produced by clang doesn't |
3398 | // give us a constant offset, but gives us a DWARF expressions that |
3399 | // requires an actual object |
3400 | // in memory. the DW_AT_data_member_location for a virtual base |
3401 | // class looks like: |
3402 | // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, |
3403 | // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, |
3404 | // DW_OP_plus ) |
3405 | // Given this, there is really no valid response we can give to |
3406 | // clang for virtual base |
3407 | // class offsets, and this should eventually be removed from |
3408 | // LayoutRecordType() in the external |
3409 | // AST source in clang. |
3410 | } else { |
3411 | layout_info.base_offsets.insert(std::make_pair( |
3412 | ast->GetAsCXXRecordDecl( |
3413 | base_class_clang_type.GetOpaqueQualType()), |
3414 | clang::CharUnits::fromQuantity(member_byte_offset))); |
3415 | } |
3416 | } |
3417 | } |
3418 | } break; |
3419 | |
3420 | default: |
3421 | break; |
3422 | } |
3423 | } |
3424 | |
3425 | return true; |
3426 | } |
3427 | |
3428 | size_t DWARFASTParserClang::ParseChildParameters( |
3429 | const SymbolContext &sc, clang::DeclContext *containing_decl_ctx, |
3430 | const DWARFDIE &parent_die, bool skip_artificial, bool &is_static, |
3431 | bool &is_variadic, bool &has_template_params, |
3432 | std::vector<CompilerType> &function_param_types, |
3433 | std::vector<clang::ParmVarDecl *> &function_param_decls, |
3434 | unsigned &type_quals) { |
3435 | if (!parent_die) |
3436 | return 0; |
3437 | |
3438 | size_t arg_idx = 0; |
3439 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
3440 | die = die.GetSibling()) { |
3441 | const dw_tag_t tag = die.Tag(); |
3442 | switch (tag) { |
3443 | case DW_TAG_formal_parameter: { |
3444 | DWARFAttributes attributes; |
3445 | const size_t num_attributes = die.GetAttributes(attributes); |
3446 | if (num_attributes > 0) { |
3447 | const char *name = NULL__null; |
3448 | Declaration decl; |
3449 | DWARFFormValue param_type_die_form; |
3450 | bool is_artificial = false; |
3451 | // one of None, Auto, Register, Extern, Static, PrivateExtern |
3452 | |
3453 | clang::StorageClass storage = clang::SC_None; |
3454 | uint32_t i; |
3455 | for (i = 0; i < num_attributes; ++i) { |
3456 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3457 | DWARFFormValue form_value; |
3458 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3459 | switch (attr) { |
3460 | case DW_AT_decl_file: |
3461 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
3462 | form_value.Unsigned())); |
3463 | break; |
3464 | case DW_AT_decl_line: |
3465 | decl.SetLine(form_value.Unsigned()); |
3466 | break; |
3467 | case DW_AT_decl_column: |
3468 | decl.SetColumn(form_value.Unsigned()); |
3469 | break; |
3470 | case DW_AT_name: |
3471 | name = form_value.AsCString(); |
3472 | break; |
3473 | case DW_AT_type: |
3474 | param_type_die_form = form_value; |
3475 | break; |
3476 | case DW_AT_artificial: |
3477 | is_artificial = form_value.Boolean(); |
3478 | break; |
3479 | case DW_AT_location: |
3480 | // if (form_value.BlockData()) |
3481 | // { |
3482 | // const DWARFDataExtractor& |
3483 | // debug_info_data = debug_info(); |
3484 | // uint32_t block_length = |
3485 | // form_value.Unsigned(); |
3486 | // DWARFDataExtractor |
3487 | // location(debug_info_data, |
3488 | // form_value.BlockData() - |
3489 | // debug_info_data.GetDataStart(), |
3490 | // block_length); |
3491 | // } |
3492 | // else |
3493 | // { |
3494 | // } |
3495 | // break; |
3496 | case DW_AT_const_value: |
3497 | case DW_AT_default_value: |
3498 | case DW_AT_description: |
3499 | case DW_AT_endianity: |
3500 | case DW_AT_is_optional: |
3501 | case DW_AT_segment: |
3502 | case DW_AT_variable_parameter: |
3503 | default: |
3504 | case DW_AT_abstract_origin: |
3505 | case DW_AT_sibling: |
3506 | break; |
3507 | } |
3508 | } |
3509 | } |
3510 | |
3511 | bool skip = false; |
3512 | if (skip_artificial) { |
3513 | if (is_artificial) { |
3514 | // In order to determine if a C++ member function is |
3515 | // "const" we have to look at the const-ness of "this"... |
3516 | // Ugly, but that |
3517 | if (arg_idx == 0) { |
3518 | if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) { |
3519 | // Often times compilers omit the "this" name for the |
3520 | // specification DIEs, so we can't rely upon the name |
3521 | // being in the formal parameter DIE... |
3522 | if (name == NULL__null || ::strcmp(name, "this") == 0) { |
3523 | Type *this_type = |
3524 | die.ResolveTypeUID(DIERef(param_type_die_form)); |
3525 | if (this_type) { |
3526 | uint32_t encoding_mask = this_type->GetEncodingMask(); |
3527 | if (encoding_mask & Type::eEncodingIsPointerUID) { |
3528 | is_static = false; |
3529 | |
3530 | if (encoding_mask & (1u << Type::eEncodingIsConstUID)) |
3531 | type_quals |= clang::Qualifiers::Const; |
3532 | if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) |
3533 | type_quals |= clang::Qualifiers::Volatile; |
3534 | } |
3535 | } |
3536 | } |
3537 | } |
3538 | } |
3539 | skip = true; |
3540 | } else { |
3541 | |
3542 | // HACK: Objective C formal parameters "self" and "_cmd" |
3543 | // are not marked as artificial in the DWARF... |
3544 | CompileUnit *comp_unit = die.GetLLDBCompileUnit(); |
3545 | if (comp_unit) { |
3546 | switch (comp_unit->GetLanguage()) { |
3547 | case eLanguageTypeObjC: |
3548 | case eLanguageTypeObjC_plus_plus: |
3549 | if (name && name[0] && |
3550 | (strcmp(name, "self") == 0 || strcmp(name, "_cmd") == 0)) |
3551 | skip = true; |
3552 | break; |
3553 | default: |
3554 | break; |
3555 | } |
3556 | } |
3557 | } |
3558 | } |
3559 | |
3560 | if (!skip) { |
3561 | Type *type = die.ResolveTypeUID(DIERef(param_type_die_form)); |
3562 | if (type) { |
3563 | function_param_types.push_back(type->GetForwardCompilerType()); |
3564 | |
3565 | clang::ParmVarDecl *param_var_decl = |
3566 | m_ast.CreateParameterDeclaration( |
3567 | name, type->GetForwardCompilerType(), storage); |
3568 | assert(param_var_decl)(static_cast <bool> (param_var_decl) ? void (0) : __assert_fail ("param_var_decl", "/build/llvm-toolchain-snapshot-7~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3568, __extension__ __PRETTY_FUNCTION__)); |
3569 | function_param_decls.push_back(param_var_decl); |
3570 | |
3571 | m_ast.SetMetadataAsUserID(param_var_decl, die.GetID()); |
3572 | } |
3573 | } |
3574 | } |
3575 | arg_idx++; |
3576 | } break; |
3577 | |
3578 | case DW_TAG_unspecified_parameters: |
3579 | is_variadic = true; |
3580 | break; |
3581 | |
3582 | case DW_TAG_template_type_parameter: |
3583 | case DW_TAG_template_value_parameter: |
3584 | case DW_TAG_GNU_template_parameter_pack: |
3585 | // The one caller of this was never using the template_param_infos, |
3586 | // and the local variable was taking up a large amount of stack space |
3587 | // in SymbolFileDWARF::ParseType() so this was removed. If we ever need |
3588 | // the template params back, we can add them back. |
3589 | // ParseTemplateDIE (dwarf_cu, die, template_param_infos); |
3590 | has_template_params = true; |
3591 | break; |
3592 | |
3593 | default: |
3594 | break; |
3595 | } |
3596 | } |
3597 | return arg_idx; |
3598 | } |
3599 | |
3600 | void DWARFASTParserClang::ParseChildArrayInfo( |
3601 | const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index, |
3602 | std::vector<uint64_t> &element_orders, uint32_t &byte_stride, |
3603 | uint32_t &bit_stride) { |
3604 | if (!parent_die) |
3605 | return; |
3606 | |
3607 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
3608 | die = die.GetSibling()) { |
3609 | const dw_tag_t tag = die.Tag(); |
3610 | switch (tag) { |
3611 | case DW_TAG_subrange_type: { |
3612 | DWARFAttributes attributes; |
3613 | const size_t num_child_attributes = die.GetAttributes(attributes); |
3614 | if (num_child_attributes > 0) { |
3615 | uint64_t num_elements = 0; |
3616 | uint64_t lower_bound = 0; |
3617 | uint64_t upper_bound = 0; |
3618 | bool upper_bound_valid = false; |
3619 | uint32_t i; |
3620 | for (i = 0; i < num_child_attributes; ++i) { |
3621 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3622 | DWARFFormValue form_value; |
3623 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
3624 | switch (attr) { |
3625 | case DW_AT_name: |
3626 | break; |
3627 | |
3628 | case DW_AT_count: |
3629 | num_elements = form_value.Unsigned(); |
3630 | break; |
3631 | |
3632 | case DW_AT_bit_stride: |
3633 | bit_stride = form_value.Unsigned(); |
3634 | break; |
3635 | |
3636 | case DW_AT_byte_stride: |
3637 | byte_stride = form_value.Unsigned(); |
3638 | break; |
3639 | |
3640 | case DW_AT_lower_bound: |
3641 | lower_bound = form_value.Unsigned(); |
3642 | break; |
3643 | |
3644 | case DW_AT_upper_bound: |
3645 | upper_bound_valid = true; |
3646 | upper_bound = form_value.Unsigned(); |
3647 | break; |
3648 | |
3649 | default: |
3650 | case DW_AT_abstract_origin: |
3651 | case DW_AT_accessibility: |
3652 | case DW_AT_allocated: |
3653 | case DW_AT_associated: |
3654 | case DW_AT_data_location: |
3655 | case DW_AT_declaration: |
3656 | case DW_AT_description: |
3657 | case DW_AT_sibling: |
3658 | case DW_AT_threads_scaled: |
3659 | case DW_AT_type: |
3660 | case DW_AT_visibility: |
3661 | break; |
3662 | } |
3663 | } |
3664 | } |
3665 | |
3666 | if (num_elements == 0) { |
3667 | if (upper_bound_valid && upper_bound >= lower_bound) |
3668 | num_elements = upper_bound - lower_bound + 1; |
3669 | } |
3670 | |
3671 | element_orders.push_back(num_elements); |
3672 | } |
3673 | } break; |
3674 | } |
3675 | } |
3676 | } |
3677 | |
3678 | Type *DWARFASTParserClang::GetTypeForDIE(const DWARFDIE &die) { |
3679 | if (die) { |
3680 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3681 | DWARFAttributes attributes; |
3682 | const size_t num_attributes = die.GetAttributes(attributes); |
3683 | if (num_attributes > 0) { |
3684 | DWARFFormValue type_die_form; |
3685 | for (size_t i = 0; i < num_attributes; ++i) { |
3686 | dw_attr_t attr = attributes.AttributeAtIndex(i); |
3687 | DWARFFormValue form_value; |
3688 | |
3689 | if (attr == DW_AT_type && |
3690 | attributes.ExtractFormValueAtIndex(i, form_value)) |
3691 | return dwarf->ResolveTypeUID(dwarf->GetDIE(DIERef(form_value)), true); |
3692 | } |
3693 | } |
3694 | } |
3695 | |
3696 | return nullptr; |
3697 | } |
3698 | |
3699 | clang::Decl *DWARFASTParserClang::GetClangDeclForDIE(const DWARFDIE &die) { |
3700 | if (!die) |
3701 | return nullptr; |
3702 | |
3703 | switch (die.Tag()) { |
3704 | case DW_TAG_variable: |
3705 | case DW_TAG_constant: |
3706 | case DW_TAG_formal_parameter: |
3707 | case DW_TAG_imported_declaration: |
3708 | case DW_TAG_imported_module: |
3709 | break; |
3710 | default: |
3711 | return nullptr; |
3712 | } |
3713 | |
3714 | DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE()); |
3715 | if (cache_pos != m_die_to_decl.end()) |
3716 | return cache_pos->second; |
3717 | |
3718 | if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) { |
3719 | clang::Decl *decl = GetClangDeclForDIE(spec_die); |
3720 | m_die_to_decl[die.GetDIE()] = decl; |
3721 | m_decl_to_die[decl].insert(die.GetDIE()); |
3722 | return decl; |
3723 | } |
3724 | |
3725 | if (DWARFDIE abstract_origin_die = |
3726 | die.GetReferencedDIE(DW_AT_abstract_origin)) { |
3727 | clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die); |
3728 | m_die_to_decl[die.GetDIE()] = decl; |
3729 | m_decl_to_die[decl].insert(die.GetDIE()); |
3730 | return decl; |
3731 | } |
3732 | |
3733 | clang::Decl *decl = nullptr; |
3734 | switch (die.Tag()) { |
3735 | case DW_TAG_variable: |
3736 | case DW_TAG_constant: |
3737 | case DW_TAG_formal_parameter: { |
3738 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3739 | Type *type = GetTypeForDIE(die); |
3740 | if (dwarf && type) { |
3741 | const char *name = die.GetName(); |
3742 | clang::DeclContext *decl_context = |
3743 | ClangASTContext::DeclContextGetAsDeclContext( |
3744 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3745 | decl = m_ast.CreateVariableDeclaration( |
3746 | decl_context, name, |
3747 | ClangUtil::GetQualType(type->GetForwardCompilerType())); |
3748 | } |
3749 | break; |
3750 | } |
3751 | case DW_TAG_imported_declaration: { |
3752 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3753 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
3754 | if (imported_uid) { |
3755 | CompilerDecl imported_decl = imported_uid.GetDecl(); |
3756 | if (imported_decl) { |
3757 | clang::DeclContext *decl_context = |
3758 | ClangASTContext::DeclContextGetAsDeclContext( |
3759 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3760 | if (clang::NamedDecl *clang_imported_decl = |
3761 | llvm::dyn_cast<clang::NamedDecl>( |
3762 | (clang::Decl *)imported_decl.GetOpaqueDecl())) |
3763 | decl = |
3764 | m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl); |
3765 | } |
3766 | } |
3767 | break; |
3768 | } |
3769 | case DW_TAG_imported_module: { |
3770 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3771 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
3772 | |
3773 | if (imported_uid) { |
3774 | CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext(); |
3775 | if (imported_decl_ctx) { |
3776 | clang::DeclContext *decl_context = |
3777 | ClangASTContext::DeclContextGetAsDeclContext( |
3778 | dwarf->GetDeclContextContainingUID(die.GetID())); |
3779 | if (clang::NamespaceDecl *ns_decl = |
3780 | ClangASTContext::DeclContextGetAsNamespaceDecl( |
3781 | imported_decl_ctx)) |
3782 | decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl); |
3783 | } |
3784 | } |
3785 | break; |
3786 | } |
3787 | default: |
3788 | break; |
3789 | } |
3790 | |
3791 | m_die_to_decl[die.GetDIE()] = decl; |
3792 | m_decl_to_die[decl].insert(die.GetDIE()); |
3793 | |
3794 | return decl; |
3795 | } |
3796 | |
3797 | clang::DeclContext * |
3798 | DWARFASTParserClang::GetClangDeclContextForDIE(const DWARFDIE &die) { |
3799 | if (die) { |
3800 | clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die); |
3801 | if (decl_ctx) |
3802 | return decl_ctx; |
3803 | |
3804 | bool try_parsing_type = true; |
3805 | switch (die.Tag()) { |
3806 | case DW_TAG_compile_unit: |
3807 | decl_ctx = m_ast.GetTranslationUnitDecl(); |
3808 | try_parsing_type = false; |
3809 | break; |
3810 | |
3811 | case DW_TAG_namespace: |
3812 | decl_ctx = ResolveNamespaceDIE(die); |
3813 | try_parsing_type = false; |
3814 | break; |
3815 | |
3816 | case DW_TAG_lexical_block: |
3817 | decl_ctx = GetDeclContextForBlock(die); |
3818 | try_parsing_type = false; |
3819 | break; |
3820 | |
3821 | default: |
3822 | break; |
3823 | } |
3824 | |
3825 | if (decl_ctx == nullptr && try_parsing_type) { |
3826 | Type *type = die.GetDWARF()->ResolveType(die); |
3827 | if (type) |
3828 | decl_ctx = GetCachedClangDeclContextForDIE(die); |
3829 | } |
3830 | |
3831 | if (decl_ctx) { |
3832 | LinkDeclContextToDIE(decl_ctx, die); |
3833 | return decl_ctx; |
3834 | } |
3835 | } |
3836 | return nullptr; |
3837 | } |
3838 | |
3839 | static bool IsSubroutine(const DWARFDIE &die) { |
3840 | switch (die.Tag()) { |
3841 | case DW_TAG_subprogram: |
3842 | case DW_TAG_inlined_subroutine: |
3843 | return true; |
3844 | default: |
3845 | return false; |
3846 | } |
3847 | } |
3848 | |
3849 | static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die) { |
3850 | for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) { |
3851 | if (IsSubroutine(candidate)) { |
3852 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
3853 | return candidate; |
3854 | } else { |
3855 | return DWARFDIE(); |
3856 | } |
3857 | } |
3858 | } |
3859 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3860, __extension__ __PRETTY_FUNCTION__)) |
3860 | "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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3860, __extension__ __PRETTY_FUNCTION__)); |
3861 | return DWARFDIE(); |
3862 | } |
3863 | |
3864 | static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context) { |
3865 | for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid(); |
3866 | candidate = candidate.GetSibling()) { |
3867 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
3868 | return candidate; |
3869 | } |
3870 | } |
3871 | return DWARFDIE(); |
3872 | } |
3873 | |
3874 | static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block, |
3875 | const DWARFDIE &function) { |
3876 | assert(IsSubroutine(function))(static_cast <bool> (IsSubroutine(function)) ? void (0) : __assert_fail ("IsSubroutine(function)", "/build/llvm-toolchain-snapshot-7~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3876, __extension__ __PRETTY_FUNCTION__)); |
3877 | for (DWARFDIE context = block; context != function.GetParent(); |
3878 | context = context.GetParent()) { |
3879 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3879, __extension__ __PRETTY_FUNCTION__)); |
3880 | if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) { |
3881 | return child; |
3882 | } |
3883 | } |
3884 | return DWARFDIE(); |
3885 | } |
3886 | |
3887 | clang::DeclContext * |
3888 | DWARFASTParserClang::GetDeclContextForBlock(const DWARFDIE &die) { |
3889 | 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~svn326551/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3889, __extension__ __PRETTY_FUNCTION__)); |
3890 | DWARFDIE containing_function_with_abstract_origin = |
3891 | GetContainingFunctionWithAbstractOrigin(die); |
3892 | if (!containing_function_with_abstract_origin) { |
3893 | return (clang::DeclContext *)ResolveBlockDIE(die); |
3894 | } |
3895 | DWARFDIE child = FindFirstChildWithAbstractOrigin( |
3896 | die, containing_function_with_abstract_origin); |
3897 | CompilerDeclContext decl_context = |
3898 | GetDeclContextContainingUIDFromDWARF(child); |
3899 | return (clang::DeclContext *)decl_context.GetOpaqueDeclContext(); |
3900 | } |
3901 | |
3902 | clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) { |
3903 | if (die && die.Tag() == DW_TAG_lexical_block) { |
3904 | clang::BlockDecl *decl = |
3905 | llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]); |
3906 | |
3907 | if (!decl) { |
3908 | DWARFDIE decl_context_die; |
3909 | clang::DeclContext *decl_context = |
3910 | GetClangDeclContextContainingDIE(die, &decl_context_die); |
3911 | decl = m_ast.CreateBlockDeclaration(decl_context); |
3912 | |
3913 | if (decl) |
3914 | LinkDeclContextToDIE((clang::DeclContext *)decl, die); |
3915 | } |
3916 | |
3917 | return decl; |
3918 | } |
3919 | return nullptr; |
3920 | } |
3921 | |
3922 | clang::NamespaceDecl * |
3923 | DWARFASTParserClang::ResolveNamespaceDIE(const DWARFDIE &die) { |
3924 | if (die && die.Tag() == DW_TAG_namespace) { |
3925 | // See if we already parsed this namespace DIE and associated it with a |
3926 | // uniqued namespace declaration |
3927 | clang::NamespaceDecl *namespace_decl = |
3928 | static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]); |
3929 | if (namespace_decl) |
3930 | return namespace_decl; |
3931 | else { |
3932 | const char *namespace_name = die.GetName(); |
3933 | clang::DeclContext *containing_decl_ctx = |
3934 | GetClangDeclContextContainingDIE(die, nullptr); |
3935 | namespace_decl = m_ast.GetUniqueNamespaceDeclaration(namespace_name, |
3936 | containing_decl_ctx); |
3937 | Log *log = |
3938 | nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
3939 | if (log) { |
3940 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3941 | if (namespace_name) { |
3942 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
3943 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
3944 | ": DW_TAG_namespace with DW_AT_name(\"%s\") => " |
3945 | "clang::NamespaceDecl *%p (original = %p)", |
3946 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
3947 | namespace_name, static_cast<void *>(namespace_decl), |
3948 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
3949 | } else { |
3950 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
3951 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
3952 | ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p " |
3953 | "(original = %p)", |
3954 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
3955 | static_cast<void *>(namespace_decl), |
3956 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
3957 | } |
3958 | } |
3959 | |
3960 | if (namespace_decl) |
3961 | LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die); |
3962 | return namespace_decl; |
3963 | } |
3964 | } |
3965 | return nullptr; |
3966 | } |
3967 | |
3968 | clang::DeclContext *DWARFASTParserClang::GetClangDeclContextContainingDIE( |
3969 | const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) { |
3970 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3971 | |
3972 | DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die); |
3973 | |
3974 | if (decl_ctx_die_copy) |
3975 | *decl_ctx_die_copy = decl_ctx_die; |
3976 | |
3977 | if (decl_ctx_die) { |
3978 | clang::DeclContext *clang_decl_ctx = |
3979 | GetClangDeclContextForDIE(decl_ctx_die); |
3980 | if (clang_decl_ctx) |
3981 | return clang_decl_ctx; |
3982 | } |
3983 | return m_ast.GetTranslationUnitDecl(); |
3984 | } |
3985 | |
3986 | clang::DeclContext * |
3987 | DWARFASTParserClang::GetCachedClangDeclContextForDIE(const DWARFDIE &die) { |
3988 | if (die) { |
3989 | DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); |
3990 | if (pos != m_die_to_decl_ctx.end()) |
3991 | return pos->second; |
3992 | } |
3993 | return nullptr; |
3994 | } |
3995 | |
3996 | void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx, |
3997 | const DWARFDIE &die) { |
3998 | m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; |
3999 | // There can be many DIEs for a single decl context |
4000 | // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); |
4001 | m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die)); |
4002 | } |
4003 | |
4004 | bool DWARFASTParserClang::CopyUniqueClassMethodTypes( |
4005 | const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die, |
4006 | lldb_private::Type *class_type, DWARFDIECollection &failures) { |
4007 | if (!class_type || !src_class_die || !dst_class_die) |
4008 | return false; |
4009 | if (src_class_die.Tag() != dst_class_die.Tag()) |
4010 | return false; |
4011 | |
4012 | // We need to complete the class type so we can get all of the method types |
4013 | // parsed so we can then unique those types to their equivalent counterparts |
4014 | // in "dst_cu" and "dst_class_die" |
4015 | class_type->GetFullCompilerType(); |
4016 | |
4017 | DWARFDIE src_die; |
4018 | DWARFDIE dst_die; |
4019 | UniqueCStringMap<DWARFDIE> src_name_to_die; |
4020 | UniqueCStringMap<DWARFDIE> dst_name_to_die; |
4021 | UniqueCStringMap<DWARFDIE> src_name_to_die_artificial; |
4022 | UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial; |
4023 | for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); |
4024 | src_die = src_die.GetSibling()) { |
4025 | if (src_die.Tag() == DW_TAG_subprogram) { |
4026 | // Make sure this is a declaration and not a concrete instance by looking |
4027 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
4028 | // are placed inside the class definitions and shouldn't be included in |
4029 | // the list of things are are tracking here. |
4030 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
4031 | const char *src_name = src_die.GetMangledName(); |
4032 | if (src_name) { |
4033 | ConstString src_const_name(src_name); |
4034 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
4035 | src_name_to_die_artificial.Append(src_const_name, src_die); |
4036 | else |
4037 | src_name_to_die.Append(src_const_name, src_die); |
4038 | } |
4039 | } |
4040 | } |
4041 | } |
4042 | for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); |
4043 | dst_die = dst_die.GetSibling()) { |
4044 | if (dst_die.Tag() == DW_TAG_subprogram) { |
4045 | // Make sure this is a declaration and not a concrete instance by looking |
4046 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
4047 | // are placed inside the class definitions and shouldn't be included in |
4048 | // the list of things are are tracking here. |
4049 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
4050 | const char *dst_name = dst_die.GetMangledName(); |
4051 | if (dst_name) { |
4052 | ConstString dst_const_name(dst_name); |
4053 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
4054 | dst_name_to_die_artificial.Append(dst_const_name, dst_die); |
4055 | else |
4056 | dst_name_to_die.Append(dst_const_name, dst_die); |
4057 | } |
4058 | } |
4059 | } |
4060 | } |
4061 | const uint32_t src_size = src_name_to_die.GetSize(); |
4062 | const uint32_t dst_size = dst_name_to_die.GetSize(); |
4063 | Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | |
4064 | // DWARF_LOG_TYPE_COMPLETION)); |
4065 | |
4066 | // Is everything kosher so we can go through the members at top speed? |
4067 | bool fast_path = true; |
4068 | |
4069 | if (src_size != dst_size) { |
4070 | if (src_size != 0 && dst_size != 0) { |
4071 | if (log) |
4072 | log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, " |
4073 | "but they didn't have the same size (src=%d, dst=%d)", |
4074 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
4075 | src_size, dst_size); |
4076 | } |
4077 | |
4078 | fast_path = false; |
4079 | } |
4080 | |
4081 | uint32_t idx; |
4082 | |
4083 | if (fast_path) { |
4084 | for (idx = 0; idx < src_size; ++idx) { |
4085 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
4086 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
4087 | |
4088 | if (src_die.Tag() != dst_die.Tag()) { |
4089 | if (log) |
4090 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
4091 | "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", |
4092 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
4093 | src_die.GetOffset(), src_die.GetTagAsCString(), |
4094 | dst_die.GetOffset(), dst_die.GetTagAsCString()); |
4095 | fast_path = false; |
4096 | } |
4097 | |
4098 | const char *src_name = src_die.GetMangledName(); |
4099 | const char *dst_name = dst_die.GetMangledName(); |
4100 | |
4101 | // Make sure the names match |
4102 | if (src_name == dst_name || (strcmp(src_name, dst_name) == 0)) |
4103 | continue; |
4104 | |
4105 | if (log) |
4106 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
4107 | "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", |
4108 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
4109 | src_die.GetOffset(), src_name, dst_die.GetOffset(), |
4110 | dst_name); |
4111 | |
4112 | fast_path = false; |
4113 | } |
4114 | } |
4115 | |
4116 | DWARFASTParserClang *src_dwarf_ast_parser = |
4117 | (DWARFASTParserClang *)src_die.GetDWARFParser(); |
4118 | DWARFASTParserClang *dst_dwarf_ast_parser = |
4119 | (DWARFASTParserClang *)dst_die.GetDWARFParser(); |
4120 | |
4121 | // Now do the work of linking the DeclContexts and Types. |
4122 | if (fast_path) { |
4123 | // We can do this quickly. Just run across the tables index-for-index since |
4124 | // we know each node has matching names and tags. |
4125 | for (idx = 0; idx < src_size; ++idx) { |
4126 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
4127 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
4128 | |
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), src_die.GetOffset(), |
4135 | 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 for " |
4140 | "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( |
4149 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
4150 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
4151 | src_die.GetOffset(), dst_die.GetOffset()); |
4152 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
4153 | } else { |
4154 | if (log) |
4155 | log->Printf("warning: tried to unique lldb_private::Type from " |
4156 | "0x%8.8x for 0x%8.8x, but none was found", |
4157 | src_die.GetOffset(), dst_die.GetOffset()); |
4158 | } |
4159 | } |
4160 | } else { |
4161 | // We must do this slowly. For each member of the destination, look |
4162 | // up a member in the source with the same name, check its tag, and |
4163 | // unique them if everything matches up. Report failures. |
4164 | |
4165 | if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) { |
4166 | src_name_to_die.Sort(); |
4167 | |
4168 | for (idx = 0; idx < dst_size; ++idx) { |
4169 | ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx); |
4170 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
4171 | src_die = src_name_to_die.Find(dst_name, DWARFDIE()); |
4172 | |
4173 | if (src_die && (src_die.Tag() == dst_die.Tag())) { |
4174 | clang::DeclContext *src_decl_ctx = |
4175 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
4176 | if (src_decl_ctx) { |
4177 | if (log) |
4178 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
4179 | static_cast<void *>(src_decl_ctx), |
4180 | src_die.GetOffset(), dst_die.GetOffset()); |
4181 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
4182 | } else { |
4183 | if (log) |
4184 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
4185 | "for 0x%8.8x, but none was found", |
4186 | src_die.GetOffset(), dst_die.GetOffset()); |
4187 | } |
4188 | |
4189 | Type *src_child_type = |
4190 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
4191 | if (src_child_type) { |
4192 | if (log) |
4193 | log->Printf("uniquing type %p (uid=0x%" PRIx64"l" "x" |
4194 | ") from 0x%8.8x for 0x%8.8x", |
4195 | static_cast<void *>(src_child_type), |
4196 | src_child_type->GetID(), src_die.GetOffset(), |
4197 | dst_die.GetOffset()); |
4198 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = |
4199 | src_child_type; |
4200 | } else { |
4201 | if (log) |
4202 | log->Printf("warning: tried to unique lldb_private::Type from " |
4203 | "0x%8.8x for 0x%8.8x, but none was found", |
4204 | src_die.GetOffset(), dst_die.GetOffset()); |
4205 | } |
4206 | } else { |
4207 | if (log) |
4208 | log->Printf("warning: couldn't find a match for 0x%8.8x", |
4209 | dst_die.GetOffset()); |
4210 | |
4211 | failures.Append(dst_die); |
4212 | } |
4213 | } |
4214 | } |
4215 | } |
4216 | |
4217 | const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize(); |
4218 | const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize(); |
4219 | |
4220 | if (src_size_artificial && dst_size_artificial) { |
4221 | dst_name_to_die_artificial.Sort(); |
4222 | |
4223 | for (idx = 0; idx < src_size_artificial; ++idx) { |
4224 | ConstString src_name_artificial = |
4225 | src_name_to_die_artificial.GetCStringAtIndex(idx); |
4226 | src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
4227 | dst_die = |
4228 | dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); |
4229 | |
4230 | if (dst_die) { |
4231 | // Both classes have the artificial types, link them |
4232 | clang::DeclContext *src_decl_ctx = |
4233 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
4234 | if (src_decl_ctx) { |
4235 | if (log) |
4236 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
4237 | static_cast<void *>(src_decl_ctx), src_die.GetOffset(), |
4238 | dst_die.GetOffset()); |
4239 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
4240 | } else { |
4241 | if (log) |
4242 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
4243 | "for 0x%8.8x, but none was found", |
4244 | src_die.GetOffset(), dst_die.GetOffset()); |
4245 | } |
4246 | |
4247 | Type *src_child_type = |
4248 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
4249 | if (src_child_type) { |
4250 | if (log) |
4251 | log->Printf( |
4252 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
4253 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
4254 | src_die.GetOffset(), dst_die.GetOffset()); |
4255 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
4256 | } else { |
4257 | if (log) |
4258 | log->Printf("warning: tried to unique lldb_private::Type from " |
4259 | "0x%8.8x for 0x%8.8x, but none was found", |
4260 | src_die.GetOffset(), dst_die.GetOffset()); |
4261 | } |
4262 | } |
4263 | } |
4264 | } |
4265 | |
4266 | if (dst_size_artificial) { |
4267 | for (idx = 0; idx < dst_size_artificial; ++idx) { |
4268 | ConstString dst_name_artificial = |
4269 | dst_name_to_die_artificial.GetCStringAtIndex(idx); |
4270 | dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
4271 | if (log) |
4272 | log->Printf("warning: need to create artificial method for 0x%8.8x for " |
4273 | "method '%s'", |
4274 | dst_die.GetOffset(), dst_name_artificial.GetCString()); |
4275 | |
4276 | failures.Append(dst_die); |
4277 | } |
4278 | } |
4279 | |
4280 | return (failures.Size() != 0); |
4281 | } |