File: | tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp |
Location: | line 1115, column 45 |
Description: | Value stored to 'class_symfile' is never read |
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 "DWARFASTParserClang.h" |
11 | #include "DWARFCompileUnit.h" |
12 | #include "DWARFDebugInfo.h" |
13 | #include "DWARFDeclContext.h" |
14 | #include "DWARFDefines.h" |
15 | #include "DWARFDIE.h" |
16 | #include "DWARFDIECollection.h" |
17 | #include "SymbolFileDWARF.h" |
18 | #include "SymbolFileDWARFDebugMap.h" |
19 | #include "UniqueDWARFASTType.h" |
20 | |
21 | #include "lldb/Core/Log.h" |
22 | #include "lldb/Core/Module.h" |
23 | #include "lldb/Symbol/ClangExternalASTSourceCommon.h" |
24 | #include "lldb/Symbol/CompileUnit.h" |
25 | #include "lldb/Symbol/Function.h" |
26 | #include "lldb/Symbol/ObjectFile.h" |
27 | #include "lldb/Symbol/TypeList.h" |
28 | #include "lldb/Target/ObjCLanguageRuntime.h" |
29 | |
30 | #include "clang/AST/DeclCXX.h" |
31 | #include "clang/AST/DeclObjC.h" |
32 | |
33 | //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN |
34 | |
35 | #ifdef ENABLE_DEBUG_PRINTF |
36 | #include <stdio.h> |
37 | #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) |
38 | #else |
39 | #define DEBUG_PRINTF(fmt, ...) |
40 | #endif |
41 | |
42 | |
43 | using namespace lldb; |
44 | using namespace lldb_private; |
45 | DWARFASTParserClang::DWARFASTParserClang (ClangASTContext &ast) : |
46 | m_ast (ast), |
47 | m_die_to_decl_ctx (), |
48 | m_decl_ctx_to_die () |
49 | { |
50 | } |
51 | |
52 | DWARFASTParserClang::~DWARFASTParserClang () |
53 | { |
54 | } |
55 | |
56 | |
57 | static AccessType |
58 | DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) |
59 | { |
60 | switch (dwarf_accessibility) |
61 | { |
62 | case DW_ACCESS_public: return eAccessPublic; |
63 | case DW_ACCESS_private: return eAccessPrivate; |
64 | case DW_ACCESS_protected: return eAccessProtected; |
65 | default: break; |
66 | } |
67 | return eAccessNone; |
68 | } |
69 | |
70 | static bool |
71 | DeclKindIsCXXClass (clang::Decl::Kind decl_kind) |
72 | { |
73 | switch (decl_kind) |
74 | { |
75 | case clang::Decl::CXXRecord: |
76 | case clang::Decl::ClassTemplateSpecialization: |
77 | return true; |
78 | default: |
79 | break; |
80 | } |
81 | return false; |
82 | } |
83 | |
84 | struct BitfieldInfo |
85 | { |
86 | uint64_t bit_size; |
87 | uint64_t bit_offset; |
88 | |
89 | BitfieldInfo () : |
90 | bit_size (LLDB_INVALID_ADDRESS(18446744073709551615UL)), |
91 | bit_offset (LLDB_INVALID_ADDRESS(18446744073709551615UL)) |
92 | { |
93 | } |
94 | |
95 | void |
96 | Clear() |
97 | { |
98 | bit_size = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
99 | bit_offset = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
100 | } |
101 | |
102 | bool IsValid () |
103 | { |
104 | return (bit_size != LLDB_INVALID_ADDRESS(18446744073709551615UL)) && |
105 | (bit_offset != LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
106 | } |
107 | }; |
108 | |
109 | |
110 | TypeSP |
111 | DWARFASTParserClang::ParseTypeFromDWARF (const SymbolContext& sc, |
112 | const DWARFDIE &die, |
113 | Log *log, |
114 | bool *type_is_new_ptr) |
115 | { |
116 | TypeSP type_sp; |
117 | |
118 | if (type_is_new_ptr) |
119 | *type_is_new_ptr = false; |
120 | |
121 | AccessType accessibility = eAccessNone; |
122 | if (die) |
123 | { |
124 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
125 | if (log) |
126 | { |
127 | DWARFDIE context_die; |
128 | clang::DeclContext *context = GetClangDeclContextContainingDIE (die, &context_die); |
129 | |
130 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')", |
131 | die.GetOffset(), |
132 | static_cast<void*>(context), |
133 | context_die.GetOffset(), |
134 | die.GetTagAsCString(), |
135 | die.GetName()); |
136 | |
137 | } |
138 | // |
139 | // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
140 | // if (log && dwarf_cu) |
141 | // { |
142 | // StreamString s; |
143 | // die->DumpLocation (this, dwarf_cu, s); |
144 | // dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); |
145 | // |
146 | // } |
147 | |
148 | Type *type_ptr = dwarf->m_die_to_type.lookup (die.GetDIE()); |
149 | TypeList* type_list = dwarf->GetTypeList(); |
150 | if (type_ptr == NULL__null) |
151 | { |
152 | if (type_is_new_ptr) |
153 | *type_is_new_ptr = true; |
154 | |
155 | const dw_tag_t tag = die.Tag(); |
156 | |
157 | bool is_forward_declaration = false; |
158 | DWARFAttributes attributes; |
159 | const char *type_name_cstr = NULL__null; |
160 | ConstString type_name_const_str; |
161 | Type::ResolveState resolve_state = Type::eResolveStateUnresolved; |
162 | uint64_t byte_size = 0; |
163 | Declaration decl; |
164 | |
165 | Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; |
166 | CompilerType clang_type; |
167 | DWARFFormValue form_value; |
168 | |
169 | dw_attr_t attr; |
170 | |
171 | switch (tag) |
172 | { |
173 | case DW_TAG_base_type: |
174 | case DW_TAG_pointer_type: |
175 | case DW_TAG_reference_type: |
176 | case DW_TAG_rvalue_reference_type: |
177 | case DW_TAG_typedef: |
178 | case DW_TAG_const_type: |
179 | case DW_TAG_restrict_type: |
180 | case DW_TAG_volatile_type: |
181 | case DW_TAG_unspecified_type: |
182 | { |
183 | // Set a bit that lets us know that we are currently parsing this |
184 | dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type*)1); |
185 | |
186 | const size_t num_attributes = die.GetAttributes (attributes); |
187 | uint32_t encoding = 0; |
188 | lldb::user_id_t encoding_uid = LLDB_INVALID_UID(18446744073709551615UL); |
189 | |
190 | if (num_attributes > 0) |
191 | { |
192 | uint32_t i; |
193 | for (i=0; i<num_attributes; ++i) |
194 | { |
195 | attr = attributes.AttributeAtIndex(i); |
196 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
197 | { |
198 | switch (attr) |
199 | { |
200 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
201 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
202 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
203 | case DW_AT_name: |
204 | |
205 | type_name_cstr = form_value.AsCString(); |
206 | // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't |
207 | // include the "&"... |
208 | if (tag == DW_TAG_reference_type) |
209 | { |
210 | if (strchr (type_name_cstr, '&') == NULL__null) |
211 | type_name_cstr = NULL__null; |
212 | } |
213 | if (type_name_cstr) |
214 | type_name_const_str.SetCString(type_name_cstr); |
215 | break; |
216 | case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; |
217 | case DW_AT_encoding: encoding = form_value.Unsigned(); break; |
218 | case DW_AT_type: encoding_uid = form_value.Reference(); break; |
219 | default: |
220 | case DW_AT_sibling: |
221 | break; |
222 | } |
223 | } |
224 | } |
225 | } |
226 | |
227 | DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid); |
228 | |
229 | switch (tag) |
230 | { |
231 | default: |
232 | break; |
233 | |
234 | case DW_TAG_unspecified_type: |
235 | if (strcmp(type_name_cstr, "nullptr_t") == 0 || |
236 | strcmp(type_name_cstr, "decltype(nullptr)") == 0 ) |
237 | { |
238 | resolve_state = Type::eResolveStateFull; |
239 | clang_type = m_ast.GetBasicType(eBasicTypeNullPtr); |
240 | break; |
241 | } |
242 | // Fall through to base type below in case we can handle the type there... |
243 | |
244 | case DW_TAG_base_type: |
245 | resolve_state = Type::eResolveStateFull; |
246 | clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, |
247 | encoding, |
248 | byte_size * 8); |
249 | break; |
250 | |
251 | case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; |
252 | case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; |
253 | case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break; |
254 | case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; |
255 | case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; |
256 | case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; |
257 | case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; |
258 | } |
259 | |
260 | if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL__null) |
261 | { |
262 | bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); |
263 | |
264 | if (translation_unit_is_objc) |
265 | { |
266 | if (type_name_cstr != NULL__null) |
267 | { |
268 | static ConstString g_objc_type_name_id("id"); |
269 | static ConstString g_objc_type_name_Class("Class"); |
270 | static ConstString g_objc_type_name_selector("SEL"); |
271 | |
272 | if (type_name_const_str == g_objc_type_name_id) |
273 | { |
274 | if (log) |
275 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
276 | "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.", |
277 | die.GetOffset(), |
278 | die.GetTagAsCString(), |
279 | die.GetName()); |
280 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
281 | encoding_data_type = Type::eEncodingIsUID; |
282 | encoding_uid = LLDB_INVALID_UID(18446744073709551615UL); |
283 | resolve_state = Type::eResolveStateFull; |
284 | |
285 | } |
286 | else if (type_name_const_str == g_objc_type_name_Class) |
287 | { |
288 | if (log) |
289 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
290 | "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.", |
291 | die.GetOffset(), |
292 | die.GetTagAsCString(), |
293 | die.GetName()); |
294 | clang_type = m_ast.GetBasicType(eBasicTypeObjCClass); |
295 | encoding_data_type = Type::eEncodingIsUID; |
296 | encoding_uid = LLDB_INVALID_UID(18446744073709551615UL); |
297 | resolve_state = Type::eResolveStateFull; |
298 | } |
299 | else if (type_name_const_str == g_objc_type_name_selector) |
300 | { |
301 | if (log) |
302 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
303 | "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.", |
304 | die.GetOffset(), |
305 | die.GetTagAsCString(), |
306 | die.GetName()); |
307 | clang_type = m_ast.GetBasicType(eBasicTypeObjCSel); |
308 | encoding_data_type = Type::eEncodingIsUID; |
309 | encoding_uid = LLDB_INVALID_UID(18446744073709551615UL); |
310 | resolve_state = Type::eResolveStateFull; |
311 | } |
312 | } |
313 | else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID(18446744073709551615UL)) |
314 | { |
315 | // Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id". |
316 | |
317 | const DWARFDIE encoding_die = die.GetDIE(encoding_uid); |
318 | |
319 | if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) |
320 | { |
321 | if (const char *struct_name = encoding_die.GetName()) |
322 | { |
323 | if (!strcmp(struct_name, "objc_object")) |
324 | { |
325 | if (log) |
326 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
327 | "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.", |
328 | die.GetOffset(), |
329 | die.GetTagAsCString(), |
330 | die.GetName()); |
331 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
332 | encoding_data_type = Type::eEncodingIsUID; |
333 | encoding_uid = LLDB_INVALID_UID(18446744073709551615UL); |
334 | resolve_state = Type::eResolveStateFull; |
335 | } |
336 | } |
337 | } |
338 | } |
339 | } |
340 | } |
341 | |
342 | type_sp.reset( new Type (die.GetID(), |
343 | dwarf, |
344 | type_name_const_str, |
345 | byte_size, |
346 | NULL__null, |
347 | encoding_uid, |
348 | encoding_data_type, |
349 | &decl, |
350 | clang_type, |
351 | resolve_state)); |
352 | |
353 | dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); |
354 | |
355 | // Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); |
356 | // if (encoding_type != NULL) |
357 | // { |
358 | // if (encoding_type != DIE_IS_BEING_PARSED) |
359 | // type_sp->SetEncodingType(encoding_type); |
360 | // else |
361 | // m_indirect_fixups.push_back(type_sp.get()); |
362 | // } |
363 | } |
364 | break; |
365 | |
366 | case DW_TAG_structure_type: |
367 | case DW_TAG_union_type: |
368 | case DW_TAG_class_type: |
369 | { |
370 | // Set a bit that lets us know that we are currently parsing this |
371 | dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type*)1); |
372 | bool byte_size_valid = false; |
373 | |
374 | LanguageType class_language = eLanguageTypeUnknown; |
375 | bool is_complete_objc_class = false; |
376 | //bool struct_is_class = false; |
377 | const size_t num_attributes = die.GetAttributes (attributes); |
378 | if (num_attributes > 0) |
379 | { |
380 | uint32_t i; |
381 | for (i=0; i<num_attributes; ++i) |
382 | { |
383 | attr = attributes.AttributeAtIndex(i); |
384 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
385 | { |
386 | switch (attr) |
387 | { |
388 | case DW_AT_decl_file: |
389 | if (die.GetCU()->DW_AT_decl_file_attributes_are_invalid()) |
390 | { |
391 | // llvm-gcc outputs invalid DW_AT_decl_file attributes that always |
392 | // point to the compile unit file, so we clear this invalid value |
393 | // so that we can still unique types efficiently. |
394 | decl.SetFile(FileSpec ("<invalid>", false)); |
395 | } |
396 | else |
397 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); |
398 | break; |
399 | |
400 | case DW_AT_decl_line: |
401 | decl.SetLine(form_value.Unsigned()); |
402 | break; |
403 | |
404 | case DW_AT_decl_column: |
405 | decl.SetColumn(form_value.Unsigned()); |
406 | break; |
407 | |
408 | case DW_AT_name: |
409 | type_name_cstr = form_value.AsCString(); |
410 | type_name_const_str.SetCString(type_name_cstr); |
411 | break; |
412 | |
413 | case DW_AT_byte_size: |
414 | byte_size = form_value.Unsigned(); |
415 | byte_size_valid = true; |
416 | break; |
417 | |
418 | case DW_AT_accessibility: |
419 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
420 | break; |
421 | |
422 | case DW_AT_declaration: |
423 | is_forward_declaration = form_value.Boolean(); |
424 | break; |
425 | |
426 | case DW_AT_APPLE_runtime_class: |
427 | class_language = (LanguageType)form_value.Signed(); |
428 | break; |
429 | |
430 | case DW_AT_APPLE_objc_complete_type: |
431 | is_complete_objc_class = form_value.Signed(); |
432 | break; |
433 | |
434 | case DW_AT_allocated: |
435 | case DW_AT_associated: |
436 | case DW_AT_data_location: |
437 | case DW_AT_description: |
438 | case DW_AT_start_scope: |
439 | case DW_AT_visibility: |
440 | default: |
441 | case DW_AT_sibling: |
442 | break; |
443 | } |
444 | } |
445 | } |
446 | } |
447 | |
448 | // UniqueDWARFASTType is large, so don't create a local variables on the |
449 | // stack, put it on the heap. This function is often called recursively |
450 | // and clang isn't good and sharing the stack space for variables in different blocks. |
451 | std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap(new UniqueDWARFASTType()); |
452 | |
453 | // Only try and unique the type if it has a name. |
454 | if (type_name_const_str && |
455 | dwarf->GetUniqueDWARFASTTypeMap().Find (type_name_const_str, |
456 | die, |
457 | decl, |
458 | byte_size_valid ? byte_size : -1, |
459 | *unique_ast_entry_ap)) |
460 | { |
461 | // We have already parsed this type or from another |
462 | // compile unit. GCC loves to use the "one definition |
463 | // rule" which can result in multiple definitions |
464 | // of the same class over and over in each compile |
465 | // unit. |
466 | type_sp = unique_ast_entry_ap->m_type_sp; |
467 | if (type_sp) |
468 | { |
469 | dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); |
470 | return type_sp; |
471 | } |
472 | } |
473 | |
474 | DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); |
475 | |
476 | int tag_decl_kind = -1; |
477 | AccessType default_accessibility = eAccessNone; |
478 | if (tag == DW_TAG_structure_type) |
479 | { |
480 | tag_decl_kind = clang::TTK_Struct; |
481 | default_accessibility = eAccessPublic; |
482 | } |
483 | else if (tag == DW_TAG_union_type) |
484 | { |
485 | tag_decl_kind = clang::TTK_Union; |
486 | default_accessibility = eAccessPublic; |
487 | } |
488 | else if (tag == DW_TAG_class_type) |
489 | { |
490 | tag_decl_kind = clang::TTK_Class; |
491 | default_accessibility = eAccessPrivate; |
492 | } |
493 | |
494 | if (byte_size_valid && byte_size == 0 && type_name_cstr && |
495 | die.HasChildren() == false && |
496 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC) |
497 | { |
498 | // Work around an issue with clang at the moment where |
499 | // forward declarations for objective C classes are emitted |
500 | // as: |
501 | // DW_TAG_structure_type [2] |
502 | // DW_AT_name( "ForwardObjcClass" ) |
503 | // DW_AT_byte_size( 0x00 ) |
504 | // DW_AT_decl_file( "..." ) |
505 | // DW_AT_decl_line( 1 ) |
506 | // |
507 | // Note that there is no DW_AT_declaration and there are |
508 | // no children, and the byte size is zero. |
509 | is_forward_declaration = true; |
510 | } |
511 | |
512 | if (class_language == eLanguageTypeObjC || |
513 | class_language == eLanguageTypeObjC_plus_plus) |
514 | { |
515 | if (!is_complete_objc_class && die.Supports_DW_AT_APPLE_objc_complete_type()) |
516 | { |
517 | // We have a valid eSymbolTypeObjCClass class symbol whose |
518 | // name matches the current objective C class that we |
519 | // are trying to find and this DIE isn't the complete |
520 | // definition (we checked is_complete_objc_class above and |
521 | // know it is false), so the real definition is in here somewhere |
522 | type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); |
523 | |
524 | if (!type_sp) |
525 | { |
526 | SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); |
527 | if (debug_map_symfile) |
528 | { |
529 | // We weren't able to find a full declaration in |
530 | // this DWARF, see if we have a declaration anywhere |
531 | // else... |
532 | type_sp = debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); |
533 | } |
534 | } |
535 | |
536 | if (type_sp) |
537 | { |
538 | if (log) |
539 | { |
540 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
541 | "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64"l" "x", |
542 | static_cast<void*>(this), |
543 | die.GetOffset(), |
544 | DW_TAG_value_to_name(tag), |
545 | type_name_cstr, |
546 | type_sp->GetID()); |
547 | } |
548 | |
549 | // We found a real definition for this type elsewhere |
550 | // so lets use it and cache the fact that we found |
551 | // a complete type for this die |
552 | dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); |
553 | return type_sp; |
554 | } |
555 | } |
556 | } |
557 | |
558 | |
559 | if (is_forward_declaration) |
560 | { |
561 | // We have a forward declaration to a type and we need |
562 | // to try and find a full declaration. We look in the |
563 | // current type index just in case we have a forward |
564 | // declaration followed by an actual declarations in the |
565 | // DWARF. If this fails, we need to look elsewhere... |
566 | if (log) |
567 | { |
568 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
569 | "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", |
570 | static_cast<void*>(this), |
571 | die.GetOffset(), |
572 | DW_TAG_value_to_name(tag), |
573 | type_name_cstr); |
574 | } |
575 | |
576 | DWARFDeclContext die_decl_ctx; |
577 | die.GetDWARFDeclContext(die_decl_ctx); |
578 | |
579 | //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); |
580 | type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); |
581 | |
582 | if (!type_sp) |
583 | { |
584 | SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); |
585 | if (debug_map_symfile) |
586 | { |
587 | // We weren't able to find a full declaration in |
588 | // this DWARF, see if we have a declaration anywhere |
589 | // else... |
590 | type_sp = debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); |
591 | } |
592 | } |
593 | |
594 | if (type_sp) |
595 | { |
596 | if (log) |
597 | { |
598 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
599 | "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
600 | static_cast<void*>(this), |
601 | die.GetOffset(), |
602 | DW_TAG_value_to_name(tag), |
603 | type_name_cstr, |
604 | type_sp->GetID()); |
605 | } |
606 | |
607 | // We found a real definition for this type elsewhere |
608 | // so lets use it and cache the fact that we found |
609 | // a complete type for this die |
610 | dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); |
611 | return type_sp; |
612 | } |
613 | } |
614 | assert (tag_decl_kind != -1)((tag_decl_kind != -1) ? static_cast<void> (0) : __assert_fail ("tag_decl_kind != -1", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 614, __PRETTY_FUNCTION__)); |
615 | bool clang_type_was_created = false; |
616 | clang_type.SetCompilerType(&m_ast, dwarf->m_forward_decl_die_to_clang_type.lookup (die.GetDIE())); |
617 | if (!clang_type) |
618 | { |
619 | clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); |
620 | if (accessibility == eAccessNone && decl_ctx) |
621 | { |
622 | // Check the decl context that contains this class/struct/union. |
623 | // If it is a class we must give it an accessibility. |
624 | const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); |
625 | if (DeclKindIsCXXClass (containing_decl_kind)) |
626 | accessibility = default_accessibility; |
627 | } |
628 | |
629 | ClangASTMetadata metadata; |
630 | metadata.SetUserID(die.GetID()); |
631 | metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual (die)); |
632 | |
633 | if (type_name_cstr && strchr (type_name_cstr, '<')) |
634 | { |
635 | ClangASTContext::TemplateParameterInfos template_param_infos; |
636 | if (ParseTemplateParameterInfos (die, template_param_infos)) |
637 | { |
638 | clang::ClassTemplateDecl *class_template_decl = m_ast.ParseClassTemplateDecl (decl_ctx, |
639 | accessibility, |
640 | type_name_cstr, |
641 | tag_decl_kind, |
642 | template_param_infos); |
643 | |
644 | clang::ClassTemplateSpecializationDecl *class_specialization_decl = m_ast.CreateClassTemplateSpecializationDecl (decl_ctx, |
645 | class_template_decl, |
646 | tag_decl_kind, |
647 | template_param_infos); |
648 | clang_type = m_ast.CreateClassTemplateSpecializationType (class_specialization_decl); |
649 | clang_type_was_created = true; |
650 | |
651 | m_ast.SetMetadata (class_template_decl, metadata); |
652 | m_ast.SetMetadata (class_specialization_decl, metadata); |
653 | } |
654 | } |
655 | |
656 | if (!clang_type_was_created) |
657 | { |
658 | clang_type_was_created = true; |
659 | clang_type = m_ast.CreateRecordType (decl_ctx, |
660 | accessibility, |
661 | type_name_cstr, |
662 | tag_decl_kind, |
663 | class_language, |
664 | &metadata); |
665 | } |
666 | } |
667 | |
668 | // Store a forward declaration to this class type in case any |
669 | // parameters in any class methods need it for the clang |
670 | // types for function prototypes. |
671 | LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die); |
672 | type_sp.reset (new Type (die.GetID(), |
673 | dwarf, |
674 | type_name_const_str, |
675 | byte_size, |
676 | NULL__null, |
677 | LLDB_INVALID_UID(18446744073709551615UL), |
678 | Type::eEncodingIsUID, |
679 | &decl, |
680 | clang_type, |
681 | Type::eResolveStateForward)); |
682 | |
683 | type_sp->SetIsCompleteObjCClass(is_complete_objc_class); |
684 | |
685 | |
686 | // Add our type to the unique type map so we don't |
687 | // end up creating many copies of the same type over |
688 | // and over in the ASTContext for our module |
689 | unique_ast_entry_ap->m_type_sp = type_sp; |
690 | unique_ast_entry_ap->m_die = die; |
691 | unique_ast_entry_ap->m_declaration = decl; |
692 | unique_ast_entry_ap->m_byte_size = byte_size; |
693 | dwarf->GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, |
694 | *unique_ast_entry_ap); |
695 | |
696 | if (is_forward_declaration && die.HasChildren()) |
697 | { |
698 | // Check to see if the DIE actually has a definition, some version of GCC will |
699 | // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram, |
700 | // members, or inheritance, so we can't trust it |
701 | DWARFDIE child_die = die.GetFirstChild(); |
702 | while (child_die) |
703 | { |
704 | switch (child_die.Tag()) |
705 | { |
706 | case DW_TAG_inheritance: |
707 | case DW_TAG_subprogram: |
708 | case DW_TAG_member: |
709 | case DW_TAG_APPLE_property: |
710 | case DW_TAG_class_type: |
711 | case DW_TAG_structure_type: |
712 | case DW_TAG_enumeration_type: |
713 | case DW_TAG_typedef: |
714 | case DW_TAG_union_type: |
715 | child_die.Clear(); |
716 | is_forward_declaration = false; |
717 | break; |
718 | default: |
719 | child_die = child_die.GetSibling(); |
720 | break; |
721 | } |
722 | } |
723 | } |
724 | |
725 | if (!is_forward_declaration) |
726 | { |
727 | // Always start the definition for a class type so that |
728 | // if the class has child classes or types that require |
729 | // the class to be created for use as their decl contexts |
730 | // the class will be ready to accept these child definitions. |
731 | if (die.HasChildren() == false) |
732 | { |
733 | // No children for this struct/union/class, lets finish it |
734 | ClangASTContext::StartTagDeclarationDefinition (clang_type); |
735 | ClangASTContext::CompleteTagDeclarationDefinition (clang_type); |
736 | |
737 | if (tag == DW_TAG_structure_type) // this only applies in C |
738 | { |
739 | clang::RecordDecl *record_decl = ClangASTContext::GetAsRecordDecl(clang_type); |
740 | |
741 | if (record_decl) |
742 | m_record_decl_to_layout_map.insert(std::make_pair(record_decl, LayoutInfo())); |
743 | } |
744 | } |
745 | else if (clang_type_was_created) |
746 | { |
747 | // Start the definition if the class is not objective C since |
748 | // the underlying decls respond to isCompleteDefinition(). Objective |
749 | // C decls don't respond to isCompleteDefinition() so we can't |
750 | // start the declaration definition right away. For C++ class/union/structs |
751 | // we want to start the definition in case the class is needed as the |
752 | // declaration context for a contained class or type without the need |
753 | // to complete that type.. |
754 | |
755 | if (class_language != eLanguageTypeObjC && |
756 | class_language != eLanguageTypeObjC_plus_plus) |
757 | ClangASTContext::StartTagDeclarationDefinition (clang_type); |
758 | |
759 | // Leave this as a forward declaration until we need |
760 | // to know the details of the type. lldb_private::Type |
761 | // will automatically call the SymbolFile virtual function |
762 | // "SymbolFileDWARF::CompleteType(Type *)" |
763 | // When the definition needs to be defined. |
764 | dwarf->m_forward_decl_die_to_clang_type[die.GetDIE()] = clang_type.GetOpaqueQualType(); |
765 | dwarf->m_forward_decl_clang_type_to_die[ClangASTContext::RemoveFastQualifiers(clang_type).GetOpaqueQualType()] = die.GetDIE(); |
766 | m_ast.SetHasExternalStorage (clang_type.GetOpaqueQualType(), true); |
767 | } |
768 | } |
769 | |
770 | } |
771 | break; |
772 | |
773 | case DW_TAG_enumeration_type: |
774 | { |
775 | // Set a bit that lets us know that we are currently parsing this |
776 | dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type*)1); |
777 | |
778 | lldb::user_id_t encoding_uid = DW_INVALID_OFFSET(~(dw_offset_t)0); |
779 | |
780 | const size_t num_attributes = die.GetAttributes (attributes); |
781 | if (num_attributes > 0) |
782 | { |
783 | uint32_t i; |
784 | |
785 | for (i=0; i<num_attributes; ++i) |
786 | { |
787 | attr = attributes.AttributeAtIndex(i); |
788 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
789 | { |
790 | switch (attr) |
791 | { |
792 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
793 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
794 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
795 | case DW_AT_name: |
796 | type_name_cstr = form_value.AsCString(); |
797 | type_name_const_str.SetCString(type_name_cstr); |
798 | break; |
799 | case DW_AT_type: encoding_uid = form_value.Reference(); break; |
800 | case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; |
801 | case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
802 | case DW_AT_declaration: break; //is_forward_declaration = form_value.Boolean(); break; |
803 | case DW_AT_allocated: |
804 | case DW_AT_associated: |
805 | case DW_AT_bit_stride: |
806 | case DW_AT_byte_stride: |
807 | case DW_AT_data_location: |
808 | case DW_AT_description: |
809 | case DW_AT_start_scope: |
810 | case DW_AT_visibility: |
811 | case DW_AT_specification: |
812 | case DW_AT_abstract_origin: |
813 | case DW_AT_sibling: |
814 | break; |
815 | } |
816 | } |
817 | } |
818 | |
819 | DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); |
820 | |
821 | CompilerType enumerator_clang_type; |
822 | clang_type.SetCompilerType (&m_ast, dwarf->m_forward_decl_die_to_clang_type.lookup (die.GetDIE())); |
823 | if (!clang_type) |
824 | { |
825 | if (encoding_uid != DW_INVALID_OFFSET(~(dw_offset_t)0)) |
826 | { |
827 | Type *enumerator_type = dwarf->ResolveTypeUID(encoding_uid); |
828 | if (enumerator_type) |
829 | enumerator_clang_type = enumerator_type->GetFullCompilerType (); |
830 | } |
831 | |
832 | if (!enumerator_clang_type) |
833 | enumerator_clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL__null, |
834 | DW_ATE_signed, |
835 | byte_size * 8); |
836 | |
837 | clang_type = m_ast.CreateEnumerationType (type_name_cstr, |
838 | GetClangDeclContextContainingDIE (die, nullptr), |
839 | decl, |
840 | enumerator_clang_type); |
841 | } |
842 | else |
843 | { |
844 | enumerator_clang_type = m_ast.GetEnumerationIntegerType (clang_type.GetOpaqueQualType()); |
845 | } |
846 | |
847 | LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die); |
848 | |
849 | type_sp.reset( new Type (die.GetID(), |
850 | dwarf, |
851 | type_name_const_str, |
852 | byte_size, |
853 | NULL__null, |
854 | encoding_uid, |
855 | Type::eEncodingIsUID, |
856 | &decl, |
857 | clang_type, |
858 | Type::eResolveStateForward)); |
859 | |
860 | ClangASTContext::StartTagDeclarationDefinition (clang_type); |
861 | if (die.HasChildren()) |
862 | { |
863 | SymbolContext cu_sc(die.GetLLDBCompileUnit()); |
864 | bool is_signed = false; |
865 | enumerator_clang_type.IsIntegerType(is_signed); |
866 | ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), die); |
867 | } |
868 | ClangASTContext::CompleteTagDeclarationDefinition (clang_type); |
869 | } |
870 | } |
871 | break; |
872 | |
873 | case DW_TAG_inlined_subroutine: |
874 | case DW_TAG_subprogram: |
875 | case DW_TAG_subroutine_type: |
876 | { |
877 | // Set a bit that lets us know that we are currently parsing this |
878 | dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type*)1); |
879 | |
880 | //const char *mangled = NULL; |
881 | dw_offset_t type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
882 | bool is_variadic = false; |
883 | bool is_inline = false; |
884 | bool is_static = false; |
885 | bool is_virtual = false; |
886 | bool is_explicit = false; |
887 | bool is_artificial = false; |
888 | dw_offset_t specification_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
889 | dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
890 | dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
891 | |
892 | unsigned type_quals = 0; |
893 | clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern |
894 | |
895 | |
896 | const size_t num_attributes = die.GetAttributes (attributes); |
897 | if (num_attributes > 0) |
898 | { |
899 | uint32_t i; |
900 | for (i=0; i<num_attributes; ++i) |
901 | { |
902 | attr = attributes.AttributeAtIndex(i); |
903 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
904 | { |
905 | switch (attr) |
906 | { |
907 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
908 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
909 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
910 | case DW_AT_name: |
911 | type_name_cstr = form_value.AsCString(); |
912 | type_name_const_str.SetCString(type_name_cstr); |
913 | break; |
914 | |
915 | case DW_AT_linkage_name: |
916 | case DW_AT_MIPS_linkage_name: break; // mangled = form_value.AsCString(&dwarf->get_debug_str_data()); break; |
917 | case DW_AT_type: type_die_offset = form_value.Reference(); break; |
918 | case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
919 | case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; |
920 | case DW_AT_inline: is_inline = form_value.Boolean(); break; |
921 | case DW_AT_virtuality: is_virtual = form_value.Boolean(); break; |
922 | case DW_AT_explicit: is_explicit = form_value.Boolean(); break; |
923 | case DW_AT_artificial: is_artificial = form_value.Boolean(); break; |
924 | |
925 | |
926 | case DW_AT_external: |
927 | if (form_value.Unsigned()) |
928 | { |
929 | if (storage == clang::SC_None) |
930 | storage = clang::SC_Extern; |
931 | else |
932 | storage = clang::SC_PrivateExtern; |
933 | } |
934 | break; |
935 | |
936 | case DW_AT_specification: |
937 | specification_die_offset = form_value.Reference(); |
938 | break; |
939 | |
940 | case DW_AT_abstract_origin: |
941 | abstract_origin_die_offset = form_value.Reference(); |
942 | break; |
943 | |
944 | case DW_AT_object_pointer: |
945 | object_pointer_die_offset = form_value.Reference(); |
946 | break; |
947 | |
948 | case DW_AT_allocated: |
949 | case DW_AT_associated: |
950 | case DW_AT_address_class: |
951 | case DW_AT_calling_convention: |
952 | case DW_AT_data_location: |
953 | case DW_AT_elemental: |
954 | case DW_AT_entry_pc: |
955 | case DW_AT_frame_base: |
956 | case DW_AT_high_pc: |
957 | case DW_AT_low_pc: |
958 | case DW_AT_prototyped: |
959 | case DW_AT_pure: |
960 | case DW_AT_ranges: |
961 | case DW_AT_recursive: |
962 | case DW_AT_return_addr: |
963 | case DW_AT_segment: |
964 | case DW_AT_start_scope: |
965 | case DW_AT_static_link: |
966 | case DW_AT_trampoline: |
967 | case DW_AT_visibility: |
968 | case DW_AT_vtable_elem_location: |
969 | case DW_AT_description: |
970 | case DW_AT_sibling: |
971 | break; |
972 | } |
973 | } |
974 | } |
975 | } |
976 | |
977 | std::string object_pointer_name; |
978 | if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) |
979 | { |
980 | DWARFDIE object_pointer_die = die.GetDIE (object_pointer_die_offset); |
981 | if (object_pointer_die) |
982 | { |
983 | const char *object_pointer_name_cstr = object_pointer_die.GetName(); |
984 | if (object_pointer_name_cstr) |
985 | object_pointer_name = object_pointer_name_cstr; |
986 | } |
987 | } |
988 | |
989 | DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); |
990 | |
991 | CompilerType return_clang_type; |
992 | Type *func_type = NULL__null; |
993 | |
994 | if (type_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) |
995 | func_type = dwarf->ResolveTypeUID(type_die_offset); |
996 | |
997 | if (func_type) |
998 | return_clang_type = func_type->GetForwardCompilerType (); |
999 | else |
1000 | return_clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
1001 | |
1002 | |
1003 | std::vector<CompilerType> function_param_types; |
1004 | std::vector<clang::ParmVarDecl*> function_param_decls; |
1005 | |
1006 | // Parse the function children for the parameters |
1007 | |
1008 | DWARFDIE decl_ctx_die; |
1009 | clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (die, &decl_ctx_die); |
1010 | const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); |
1011 | |
1012 | const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); |
1013 | // Start off static. This will be set to false in ParseChildParameters(...) |
1014 | // if we find a "this" parameters as the first parameter |
1015 | if (is_cxx_method) |
1016 | is_static = true; |
1017 | |
1018 | if (die.HasChildren()) |
1019 | { |
1020 | bool skip_artificial = true; |
1021 | ParseChildParameters (sc, |
1022 | containing_decl_ctx, |
1023 | die, |
1024 | skip_artificial, |
1025 | is_static, |
1026 | is_variadic, |
1027 | function_param_types, |
1028 | function_param_decls, |
1029 | type_quals); |
1030 | } |
1031 | |
1032 | // clang_type will get the function prototype clang type after this call |
1033 | clang_type = m_ast.CreateFunctionType (return_clang_type, |
1034 | function_param_types.data(), |
1035 | function_param_types.size(), |
1036 | is_variadic, |
1037 | type_quals); |
1038 | |
1039 | bool ignore_containing_context = false; |
1040 | |
1041 | if (type_name_cstr) |
1042 | { |
1043 | bool type_handled = false; |
1044 | if (tag == DW_TAG_subprogram || |
1045 | tag == DW_TAG_inlined_subroutine) |
1046 | { |
1047 | ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true); |
1048 | if (objc_method.IsValid(true)) |
1049 | { |
1050 | CompilerType class_opaque_type; |
1051 | ConstString class_name(objc_method.GetClassName()); |
1052 | if (class_name) |
1053 | { |
1054 | TypeSP complete_objc_class_type_sp (dwarf->FindCompleteObjCDefinitionTypeForDIE (DWARFDIE(), class_name, false)); |
1055 | |
1056 | if (complete_objc_class_type_sp) |
1057 | { |
1058 | CompilerType type_clang_forward_type = complete_objc_class_type_sp->GetForwardCompilerType (); |
1059 | if (ClangASTContext::IsObjCObjectOrInterfaceType(type_clang_forward_type)) |
1060 | class_opaque_type = type_clang_forward_type; |
1061 | } |
1062 | } |
1063 | |
1064 | if (class_opaque_type) |
1065 | { |
1066 | // If accessibility isn't set to anything valid, assume public for |
1067 | // now... |
1068 | if (accessibility == eAccessNone) |
1069 | accessibility = eAccessPublic; |
1070 | |
1071 | clang::ObjCMethodDecl *objc_method_decl = m_ast.AddMethodToObjCObjectType (class_opaque_type, |
1072 | type_name_cstr, |
1073 | clang_type, |
1074 | accessibility, |
1075 | is_artificial); |
1076 | type_handled = objc_method_decl != NULL__null; |
1077 | if (type_handled) |
1078 | { |
1079 | LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); |
1080 | m_ast.SetMetadataAsUserID (objc_method_decl, die.GetID()); |
1081 | } |
1082 | else |
1083 | { |
1084 | dwarf->GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", |
1085 | die.GetOffset(), |
1086 | tag, |
1087 | DW_TAG_value_to_name(tag)); |
1088 | } |
1089 | } |
1090 | } |
1091 | else if (is_cxx_method) |
1092 | { |
1093 | // Look at the parent of this DIE and see if is is |
1094 | // a class or struct and see if this is actually a |
1095 | // C++ method |
1096 | Type *class_type = dwarf->ResolveType (decl_ctx_die); |
1097 | if (class_type) |
1098 | { |
1099 | if (class_type->GetID() != decl_ctx_die.GetID()) |
1100 | { |
1101 | // We uniqued the parent class of this function to another class |
1102 | // so we now need to associate all dies under "decl_ctx_die" to |
1103 | // DIEs in the DIE for "class_type"... |
1104 | SymbolFileDWARF *class_symfile = NULL__null; |
1105 | DWARFDIE class_type_die; |
1106 | |
1107 | SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); |
1108 | if (debug_map_symfile) |
1109 | { |
1110 | class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID())); |
1111 | class_type_die = class_symfile->DebugInfo()->GetDIE (class_type->GetID()); |
1112 | } |
1113 | else |
1114 | { |
1115 | class_symfile = dwarf; |
Value stored to 'class_symfile' is never read | |
1116 | class_type_die = dwarf->DebugInfo()->GetDIE (class_type->GetID()); |
1117 | } |
1118 | if (class_type_die) |
1119 | { |
1120 | DWARFDIECollection failures; |
1121 | |
1122 | CopyUniqueClassMethodTypes (decl_ctx_die, |
1123 | class_type_die, |
1124 | class_type, |
1125 | failures); |
1126 | |
1127 | // FIXME do something with these failures that's smarter than |
1128 | // just dropping them on the ground. Unfortunately classes don't |
1129 | // like having stuff added to them after their definitions are |
1130 | // complete... |
1131 | |
1132 | type_ptr = dwarf->m_die_to_type[die.GetDIE()]; |
1133 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type*)1)) |
1134 | { |
1135 | type_sp = type_ptr->shared_from_this(); |
1136 | break; |
1137 | } |
1138 | } |
1139 | } |
1140 | |
1141 | if (specification_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) |
1142 | { |
1143 | // We have a specification which we are going to base our function |
1144 | // prototype off of, so we need this type to be completed so that the |
1145 | // m_die_to_decl_ctx for the method in the specification has a valid |
1146 | // clang decl context. |
1147 | class_type->GetForwardCompilerType (); |
1148 | // If we have a specification, then the function type should have been |
1149 | // made with the specification and not with this die. |
1150 | DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE(specification_die_offset); |
1151 | clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (spec_die); |
1152 | if (spec_clang_decl_ctx) |
1153 | { |
1154 | LinkDeclContextToDIE(spec_clang_decl_ctx, die); |
1155 | } |
1156 | else |
1157 | { |
1158 | dwarf->GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8x) has no decl\n", |
1159 | die.GetID(), |
1160 | specification_die_offset); |
1161 | } |
1162 | type_handled = true; |
1163 | } |
1164 | else if (abstract_origin_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) |
1165 | { |
1166 | // We have a specification which we are going to base our function |
1167 | // prototype off of, so we need this type to be completed so that the |
1168 | // m_die_to_decl_ctx for the method in the abstract origin has a valid |
1169 | // clang decl context. |
1170 | class_type->GetForwardCompilerType (); |
1171 | |
1172 | DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE (abstract_origin_die_offset); |
1173 | clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (abs_die); |
1174 | if (abs_clang_decl_ctx) |
1175 | { |
1176 | LinkDeclContextToDIE (abs_clang_decl_ctx, die); |
1177 | } |
1178 | else |
1179 | { |
1180 | dwarf->GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64"l" "x" ": DW_AT_abstract_origin(0x%8.8x) has no decl\n", |
1181 | die.GetID(), |
1182 | abstract_origin_die_offset); |
1183 | } |
1184 | type_handled = true; |
1185 | } |
1186 | else |
1187 | { |
1188 | CompilerType class_opaque_type = class_type->GetForwardCompilerType (); |
1189 | if (ClangASTContext::IsCXXClassType(class_opaque_type)) |
1190 | { |
1191 | if (class_opaque_type.IsBeingDefined ()) |
1192 | { |
1193 | // Neither GCC 4.2 nor clang++ currently set a valid accessibility |
1194 | // in the DWARF for C++ methods... Default to public for now... |
1195 | if (accessibility == eAccessNone) |
1196 | accessibility = eAccessPublic; |
1197 | |
1198 | if (!is_static && !die.HasChildren()) |
1199 | { |
1200 | // We have a C++ member function with no children (this pointer!) |
1201 | // and clang will get mad if we try and make a function that isn't |
1202 | // well formed in the DWARF, so we will just skip it... |
1203 | type_handled = true; |
1204 | } |
1205 | else |
1206 | { |
1207 | clang::CXXMethodDecl *cxx_method_decl; |
1208 | // REMOVE THE CRASH DESCRIPTION BELOW |
1209 | Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s", |
1210 | type_name_cstr, |
1211 | class_type->GetName().GetCString(), |
1212 | die.GetID(), |
1213 | dwarf->GetObjectFile()->GetFileSpec().GetPath().c_str()); |
1214 | |
1215 | const bool is_attr_used = false; |
1216 | |
1217 | cxx_method_decl = m_ast.AddMethodToCXXRecordType (class_opaque_type.GetOpaqueQualType(), |
1218 | type_name_cstr, |
1219 | clang_type, |
1220 | accessibility, |
1221 | is_virtual, |
1222 | is_static, |
1223 | is_inline, |
1224 | is_explicit, |
1225 | is_attr_used, |
1226 | is_artificial); |
1227 | |
1228 | type_handled = cxx_method_decl != NULL__null; |
1229 | |
1230 | if (type_handled) |
1231 | { |
1232 | LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); |
1233 | |
1234 | Host::SetCrashDescription (NULL__null); |
1235 | |
1236 | |
1237 | ClangASTMetadata metadata; |
1238 | metadata.SetUserID(die.GetID()); |
1239 | |
1240 | if (!object_pointer_name.empty()) |
1241 | { |
1242 | metadata.SetObjectPtrName(object_pointer_name.c_str()); |
1243 | if (log) |
1244 | log->Printf ("Setting object pointer name: %s on method object %p.\n", |
1245 | object_pointer_name.c_str(), |
1246 | static_cast<void*>(cxx_method_decl)); |
1247 | } |
1248 | m_ast.SetMetadata (cxx_method_decl, metadata); |
1249 | } |
1250 | else |
1251 | { |
1252 | ignore_containing_context = true; |
1253 | } |
1254 | } |
1255 | } |
1256 | else |
1257 | { |
1258 | // We were asked to parse the type for a method in a class, yet the |
1259 | // class hasn't been asked to complete itself through the |
1260 | // clang::ExternalASTSource protocol, so we need to just have the |
1261 | // class complete itself and do things the right way, then our |
1262 | // DIE should then have an entry in the dwarf->m_die_to_type map. First |
1263 | // we need to modify the dwarf->m_die_to_type so it doesn't think we are |
1264 | // trying to parse this DIE anymore... |
1265 | dwarf->m_die_to_type[die.GetDIE()] = NULL__null; |
1266 | |
1267 | // Now we get the full type to force our class type to complete itself |
1268 | // using the clang::ExternalASTSource protocol which will parse all |
1269 | // base classes and all methods (including the method for this DIE). |
1270 | class_type->GetFullCompilerType (); |
1271 | |
1272 | // The type for this DIE should have been filled in the function call above |
1273 | type_ptr = dwarf->m_die_to_type[die.GetDIE()]; |
1274 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type*)1)) |
1275 | { |
1276 | type_sp = type_ptr->shared_from_this(); |
1277 | break; |
1278 | } |
1279 | |
1280 | // FIXME This is fixing some even uglier behavior but we really need to |
1281 | // uniq the methods of each class as well as the class itself. |
1282 | // <rdar://problem/11240464> |
1283 | type_handled = true; |
1284 | } |
1285 | } |
1286 | } |
1287 | } |
1288 | } |
1289 | } |
1290 | |
1291 | if (!type_handled) |
1292 | { |
1293 | // We just have a function that isn't part of a class |
1294 | clang::FunctionDecl *function_decl = m_ast.CreateFunctionDeclaration (ignore_containing_context ? m_ast.GetTranslationUnitDecl() : containing_decl_ctx, |
1295 | type_name_cstr, |
1296 | clang_type, |
1297 | storage, |
1298 | is_inline); |
1299 | |
1300 | // if (template_param_infos.GetSize() > 0) |
1301 | // { |
1302 | // clang::FunctionTemplateDecl *func_template_decl = CreateFunctionTemplateDecl (containing_decl_ctx, |
1303 | // function_decl, |
1304 | // type_name_cstr, |
1305 | // template_param_infos); |
1306 | // |
1307 | // CreateFunctionTemplateSpecializationInfo (function_decl, |
1308 | // func_template_decl, |
1309 | // template_param_infos); |
1310 | // } |
1311 | // Add the decl to our DIE to decl context map |
1312 | assert (function_decl)((function_decl) ? static_cast<void> (0) : __assert_fail ("function_decl", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1312, __PRETTY_FUNCTION__)); |
1313 | LinkDeclContextToDIE(function_decl, die); |
1314 | if (!function_param_decls.empty()) |
1315 | m_ast.SetFunctionParameters (function_decl, |
1316 | &function_param_decls.front(), |
1317 | function_param_decls.size()); |
1318 | |
1319 | ClangASTMetadata metadata; |
1320 | metadata.SetUserID(die.GetID()); |
1321 | |
1322 | if (!object_pointer_name.empty()) |
1323 | { |
1324 | metadata.SetObjectPtrName(object_pointer_name.c_str()); |
1325 | if (log) |
1326 | log->Printf ("Setting object pointer name: %s on function object %p.", |
1327 | object_pointer_name.c_str(), |
1328 | static_cast<void*>(function_decl)); |
1329 | } |
1330 | m_ast.SetMetadata (function_decl, metadata); |
1331 | } |
1332 | } |
1333 | type_sp.reset( new Type (die.GetID(), |
1334 | dwarf, |
1335 | type_name_const_str, |
1336 | 0, |
1337 | NULL__null, |
1338 | LLDB_INVALID_UID(18446744073709551615UL), |
1339 | Type::eEncodingIsUID, |
1340 | &decl, |
1341 | clang_type, |
1342 | Type::eResolveStateFull)); |
1343 | assert(type_sp.get())((type_sp.get()) ? static_cast<void> (0) : __assert_fail ("type_sp.get()", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1343, __PRETTY_FUNCTION__)); |
1344 | } |
1345 | break; |
1346 | |
1347 | case DW_TAG_array_type: |
1348 | { |
1349 | // Set a bit that lets us know that we are currently parsing this |
1350 | dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type*)1); |
1351 | |
1352 | lldb::user_id_t type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
1353 | int64_t first_index = 0; |
1354 | uint32_t byte_stride = 0; |
1355 | uint32_t bit_stride = 0; |
1356 | bool is_vector = false; |
1357 | const size_t num_attributes = die.GetAttributes (attributes); |
1358 | |
1359 | if (num_attributes > 0) |
1360 | { |
1361 | uint32_t i; |
1362 | for (i=0; i<num_attributes; ++i) |
1363 | { |
1364 | attr = attributes.AttributeAtIndex(i); |
1365 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
1366 | { |
1367 | switch (attr) |
1368 | { |
1369 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
1370 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
1371 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
1372 | case DW_AT_name: |
1373 | type_name_cstr = form_value.AsCString(); |
1374 | type_name_const_str.SetCString(type_name_cstr); |
1375 | break; |
1376 | |
1377 | case DW_AT_type: type_die_offset = form_value.Reference(); break; |
1378 | case DW_AT_byte_size: break; // byte_size = form_value.Unsigned(); break; |
1379 | case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; |
1380 | case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; |
1381 | case DW_AT_GNU_vector: is_vector = form_value.Boolean(); break; |
1382 | case DW_AT_accessibility: break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
1383 | case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; |
1384 | case DW_AT_allocated: |
1385 | case DW_AT_associated: |
1386 | case DW_AT_data_location: |
1387 | case DW_AT_description: |
1388 | case DW_AT_ordering: |
1389 | case DW_AT_start_scope: |
1390 | case DW_AT_visibility: |
1391 | case DW_AT_specification: |
1392 | case DW_AT_abstract_origin: |
1393 | case DW_AT_sibling: |
1394 | break; |
1395 | } |
1396 | } |
1397 | } |
1398 | |
1399 | DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); |
1400 | |
1401 | Type *element_type = dwarf->ResolveTypeUID(type_die_offset); |
1402 | |
1403 | if (element_type) |
1404 | { |
1405 | std::vector<uint64_t> element_orders; |
1406 | ParseChildArrayInfo(sc, die, first_index, element_orders, byte_stride, bit_stride); |
1407 | if (byte_stride == 0 && bit_stride == 0) |
1408 | byte_stride = element_type->GetByteSize(); |
1409 | CompilerType array_element_type = element_type->GetForwardCompilerType (); |
1410 | uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; |
1411 | if (element_orders.size() > 0) |
1412 | { |
1413 | uint64_t num_elements = 0; |
1414 | std::vector<uint64_t>::const_reverse_iterator pos; |
1415 | std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend(); |
1416 | for (pos = element_orders.rbegin(); pos != end; ++pos) |
1417 | { |
1418 | num_elements = *pos; |
1419 | clang_type = m_ast.CreateArrayType (array_element_type, |
1420 | num_elements, |
1421 | is_vector); |
1422 | array_element_type = clang_type; |
1423 | array_element_bit_stride = num_elements ? |
1424 | array_element_bit_stride * num_elements : |
1425 | array_element_bit_stride; |
1426 | } |
1427 | } |
1428 | else |
1429 | { |
1430 | clang_type = m_ast.CreateArrayType (array_element_type, 0, is_vector); |
1431 | } |
1432 | ConstString empty_name; |
1433 | type_sp.reset( new Type (die.GetID(), |
1434 | dwarf, |
1435 | empty_name, |
1436 | array_element_bit_stride / 8, |
1437 | NULL__null, |
1438 | type_die_offset, |
1439 | Type::eEncodingIsUID, |
1440 | &decl, |
1441 | clang_type, |
1442 | Type::eResolveStateFull)); |
1443 | type_sp->SetEncodingType (element_type); |
1444 | } |
1445 | } |
1446 | } |
1447 | break; |
1448 | |
1449 | case DW_TAG_ptr_to_member_type: |
1450 | { |
1451 | dw_offset_t type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
1452 | dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
1453 | |
1454 | const size_t num_attributes = die.GetAttributes (attributes); |
1455 | |
1456 | if (num_attributes > 0) { |
1457 | uint32_t i; |
1458 | for (i=0; i<num_attributes; ++i) |
1459 | { |
1460 | attr = attributes.AttributeAtIndex(i); |
1461 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
1462 | { |
1463 | switch (attr) |
1464 | { |
1465 | case DW_AT_type: |
1466 | type_die_offset = form_value.Reference(); break; |
1467 | case DW_AT_containing_type: |
1468 | containing_type_die_offset = form_value.Reference(); break; |
1469 | } |
1470 | } |
1471 | } |
1472 | |
1473 | Type *pointee_type = dwarf->ResolveTypeUID(type_die_offset); |
1474 | Type *class_type = dwarf->ResolveTypeUID(containing_type_die_offset); |
1475 | |
1476 | CompilerType pointee_clang_type = pointee_type->GetForwardCompilerType (); |
1477 | CompilerType class_clang_type = class_type->GetLayoutCompilerType (); |
1478 | |
1479 | clang_type = ClangASTContext::CreateMemberPointerType(pointee_clang_type, class_clang_type); |
1480 | |
1481 | byte_size = clang_type.GetByteSize(nullptr); |
1482 | |
1483 | type_sp.reset( new Type (die.GetID(), |
1484 | dwarf, |
1485 | type_name_const_str, |
1486 | byte_size, |
1487 | NULL__null, |
1488 | LLDB_INVALID_UID(18446744073709551615UL), |
1489 | Type::eEncodingIsUID, |
1490 | NULL__null, |
1491 | clang_type, |
1492 | Type::eResolveStateForward)); |
1493 | } |
1494 | |
1495 | break; |
1496 | } |
1497 | default: |
1498 | dwarf->GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", |
1499 | die.GetOffset(), |
1500 | tag, |
1501 | DW_TAG_value_to_name(tag)); |
1502 | break; |
1503 | } |
1504 | |
1505 | if (type_sp.get()) |
1506 | { |
1507 | DWARFDIE sc_parent_die = SymbolFileDWARF::GetParentSymbolContextDIE(die); |
1508 | dw_tag_t sc_parent_tag = sc_parent_die.Tag(); |
1509 | |
1510 | SymbolContextScope * symbol_context_scope = NULL__null; |
1511 | if (sc_parent_tag == DW_TAG_compile_unit) |
1512 | { |
1513 | symbol_context_scope = sc.comp_unit; |
1514 | } |
1515 | else if (sc.function != NULL__null && sc_parent_die) |
1516 | { |
1517 | symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); |
1518 | if (symbol_context_scope == NULL__null) |
1519 | symbol_context_scope = sc.function; |
1520 | } |
1521 | |
1522 | if (symbol_context_scope != NULL__null) |
1523 | { |
1524 | type_sp->SetSymbolContextScope(symbol_context_scope); |
1525 | } |
1526 | |
1527 | // We are ready to put this type into the uniqued list up at the module level |
1528 | type_list->Insert (type_sp); |
1529 | |
1530 | dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); |
1531 | } |
1532 | } |
1533 | else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type*)1)) |
1534 | { |
1535 | type_sp = type_ptr->shared_from_this(); |
1536 | } |
1537 | } |
1538 | return type_sp; |
1539 | } |
1540 | |
1541 | // DWARF parsing functions |
1542 | |
1543 | class DWARFASTParserClang::DelayedAddObjCClassProperty |
1544 | { |
1545 | public: |
1546 | DelayedAddObjCClassProperty(const CompilerType &class_opaque_type, |
1547 | const char *property_name, |
1548 | const CompilerType &property_opaque_type, // The property type is only required if you don't have an ivar decl |
1549 | clang::ObjCIvarDecl *ivar_decl, |
1550 | const char *property_setter_name, |
1551 | const char *property_getter_name, |
1552 | uint32_t property_attributes, |
1553 | const ClangASTMetadata *metadata) : |
1554 | m_class_opaque_type (class_opaque_type), |
1555 | m_property_name (property_name), |
1556 | m_property_opaque_type (property_opaque_type), |
1557 | m_ivar_decl (ivar_decl), |
1558 | m_property_setter_name (property_setter_name), |
1559 | m_property_getter_name (property_getter_name), |
1560 | m_property_attributes (property_attributes) |
1561 | { |
1562 | if (metadata != NULL__null) |
1563 | { |
1564 | m_metadata_ap.reset(new ClangASTMetadata()); |
1565 | *m_metadata_ap = *metadata; |
1566 | } |
1567 | } |
1568 | |
1569 | DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs) |
1570 | { |
1571 | *this = rhs; |
1572 | } |
1573 | |
1574 | DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs) |
1575 | { |
1576 | m_class_opaque_type = rhs.m_class_opaque_type; |
1577 | m_property_name = rhs.m_property_name; |
1578 | m_property_opaque_type = rhs.m_property_opaque_type; |
1579 | m_ivar_decl = rhs.m_ivar_decl; |
1580 | m_property_setter_name = rhs.m_property_setter_name; |
1581 | m_property_getter_name = rhs.m_property_getter_name; |
1582 | m_property_attributes = rhs.m_property_attributes; |
1583 | |
1584 | if (rhs.m_metadata_ap.get()) |
1585 | { |
1586 | m_metadata_ap.reset (new ClangASTMetadata()); |
1587 | *m_metadata_ap = *rhs.m_metadata_ap; |
1588 | } |
1589 | return *this; |
1590 | } |
1591 | |
1592 | bool |
1593 | Finalize() |
1594 | { |
1595 | ClangASTContext* ast = m_class_opaque_type.GetTypeSystem()->AsClangASTContext(); |
1596 | assert(ast)((ast) ? static_cast<void> (0) : __assert_fail ("ast", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1596, __PRETTY_FUNCTION__)); |
1597 | return ast->AddObjCClassProperty (m_class_opaque_type, |
1598 | m_property_name, |
1599 | m_property_opaque_type, |
1600 | m_ivar_decl, |
1601 | m_property_setter_name, |
1602 | m_property_getter_name, |
1603 | m_property_attributes, |
1604 | m_metadata_ap.get()); |
1605 | } |
1606 | |
1607 | private: |
1608 | CompilerType m_class_opaque_type; |
1609 | const char *m_property_name; |
1610 | CompilerType m_property_opaque_type; |
1611 | clang::ObjCIvarDecl *m_ivar_decl; |
1612 | const char *m_property_setter_name; |
1613 | const char *m_property_getter_name; |
1614 | uint32_t m_property_attributes; |
1615 | std::unique_ptr<ClangASTMetadata> m_metadata_ap; |
1616 | }; |
1617 | |
1618 | bool |
1619 | DWARFASTParserClang::ParseTemplateDIE (const DWARFDIE &die, |
1620 | ClangASTContext::TemplateParameterInfos &template_param_infos) |
1621 | { |
1622 | const dw_tag_t tag = die.Tag(); |
1623 | |
1624 | switch (tag) |
1625 | { |
1626 | case DW_TAG_template_type_parameter: |
1627 | case DW_TAG_template_value_parameter: |
1628 | { |
1629 | DWARFAttributes attributes; |
1630 | const size_t num_attributes = die.GetAttributes (attributes); |
1631 | const char *name = NULL__null; |
1632 | Type *lldb_type = NULL__null; |
1633 | CompilerType clang_type; |
1634 | uint64_t uval64 = 0; |
1635 | bool uval64_valid = false; |
1636 | if (num_attributes > 0) |
1637 | { |
1638 | DWARFFormValue form_value; |
1639 | for (size_t i=0; i<num_attributes; ++i) |
1640 | { |
1641 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
1642 | |
1643 | switch (attr) |
1644 | { |
1645 | case DW_AT_name: |
1646 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
1647 | name = form_value.AsCString(); |
1648 | break; |
1649 | |
1650 | case DW_AT_type: |
1651 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
1652 | { |
1653 | const dw_offset_t type_die_offset = form_value.Reference(); |
1654 | lldb_type = die.ResolveTypeUID(type_die_offset); |
1655 | if (lldb_type) |
1656 | clang_type = lldb_type->GetForwardCompilerType (); |
1657 | } |
1658 | break; |
1659 | |
1660 | case DW_AT_const_value: |
1661 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
1662 | { |
1663 | uval64_valid = true; |
1664 | uval64 = form_value.Unsigned(); |
1665 | } |
1666 | break; |
1667 | default: |
1668 | break; |
1669 | } |
1670 | } |
1671 | |
1672 | clang::ASTContext *ast = m_ast.getASTContext(); |
1673 | if (!clang_type) |
1674 | clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
1675 | |
1676 | if (clang_type) |
1677 | { |
1678 | bool is_signed = false; |
1679 | if (name && name[0]) |
1680 | template_param_infos.names.push_back(name); |
1681 | else |
1682 | template_param_infos.names.push_back(NULL__null); |
1683 | |
1684 | if (tag == DW_TAG_template_value_parameter && |
1685 | lldb_type != NULL__null && |
1686 | clang_type.IsIntegerType (is_signed) && |
1687 | uval64_valid) |
1688 | { |
1689 | llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); |
1690 | template_param_infos.args.push_back (clang::TemplateArgument (*ast, |
1691 | llvm::APSInt(apint), |
1692 | ClangASTContext::GetQualType(clang_type))); |
1693 | } |
1694 | else |
1695 | { |
1696 | template_param_infos.args.push_back (clang::TemplateArgument (ClangASTContext::GetQualType(clang_type))); |
1697 | } |
1698 | } |
1699 | else |
1700 | { |
1701 | return false; |
1702 | } |
1703 | |
1704 | } |
1705 | } |
1706 | return true; |
1707 | |
1708 | default: |
1709 | break; |
1710 | } |
1711 | return false; |
1712 | } |
1713 | |
1714 | bool |
1715 | DWARFASTParserClang::ParseTemplateParameterInfos (const DWARFDIE &parent_die, |
1716 | ClangASTContext::TemplateParameterInfos &template_param_infos) |
1717 | { |
1718 | |
1719 | if (!parent_die) |
1720 | return false; |
1721 | |
1722 | Args template_parameter_names; |
1723 | for (DWARFDIE die = parent_die.GetFirstChild(); |
1724 | die.IsValid(); |
1725 | die = die.GetSibling()) |
1726 | { |
1727 | const dw_tag_t tag = die.Tag(); |
1728 | |
1729 | switch (tag) |
1730 | { |
1731 | case DW_TAG_template_type_parameter: |
1732 | case DW_TAG_template_value_parameter: |
1733 | ParseTemplateDIE (die, template_param_infos); |
1734 | break; |
1735 | |
1736 | default: |
1737 | break; |
1738 | } |
1739 | } |
1740 | if (template_param_infos.args.empty()) |
1741 | return false; |
1742 | return template_param_infos.args.size() == template_param_infos.names.size(); |
1743 | } |
1744 | |
1745 | bool |
1746 | DWARFASTParserClang::CompleteTypeFromDWARF (const DWARFDIE &die, |
1747 | lldb_private::Type *type, |
1748 | CompilerType &clang_type) |
1749 | { |
1750 | // Disable external storage for this type so we don't get anymore |
1751 | // clang::ExternalASTSource queries for this type. |
1752 | m_ast.SetHasExternalStorage (clang_type.GetOpaqueQualType(), false); |
1753 | |
1754 | if (!die) |
1755 | return false; |
1756 | |
1757 | const dw_tag_t tag = die.Tag(); |
1758 | |
1759 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
1760 | |
1761 | Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); |
1762 | if (log) |
1763 | dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log, |
1764 | "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...", |
1765 | die.GetID(), |
1766 | die.GetTagAsCString(), |
1767 | type->GetName().AsCString()); |
1768 | assert (clang_type)((clang_type) ? static_cast<void> (0) : __assert_fail ( "clang_type", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1768, __PRETTY_FUNCTION__)); |
1769 | DWARFAttributes attributes; |
1770 | |
1771 | switch (tag) |
1772 | { |
1773 | case DW_TAG_structure_type: |
1774 | case DW_TAG_union_type: |
1775 | case DW_TAG_class_type: |
1776 | { |
1777 | LayoutInfo layout_info; |
1778 | |
1779 | { |
1780 | if (die.HasChildren()) |
1781 | { |
1782 | LanguageType class_language = eLanguageTypeUnknown; |
1783 | if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) |
1784 | { |
1785 | class_language = eLanguageTypeObjC; |
1786 | // For objective C we don't start the definition when |
1787 | // the class is created. |
1788 | ClangASTContext::StartTagDeclarationDefinition (clang_type); |
1789 | } |
1790 | |
1791 | int tag_decl_kind = -1; |
1792 | AccessType default_accessibility = eAccessNone; |
1793 | if (tag == DW_TAG_structure_type) |
1794 | { |
1795 | tag_decl_kind = clang::TTK_Struct; |
1796 | default_accessibility = eAccessPublic; |
1797 | } |
1798 | else if (tag == DW_TAG_union_type) |
1799 | { |
1800 | tag_decl_kind = clang::TTK_Union; |
1801 | default_accessibility = eAccessPublic; |
1802 | } |
1803 | else if (tag == DW_TAG_class_type) |
1804 | { |
1805 | tag_decl_kind = clang::TTK_Class; |
1806 | default_accessibility = eAccessPrivate; |
1807 | } |
1808 | |
1809 | SymbolContext sc(die.GetLLDBCompileUnit()); |
1810 | std::vector<clang::CXXBaseSpecifier *> base_classes; |
1811 | std::vector<int> member_accessibilities; |
1812 | bool is_a_class = false; |
1813 | // Parse members and base classes first |
1814 | DWARFDIECollection member_function_dies; |
1815 | |
1816 | DelayedPropertyList delayed_properties; |
1817 | ParseChildMembers (sc, |
1818 | die, |
1819 | clang_type, |
1820 | class_language, |
1821 | base_classes, |
1822 | member_accessibilities, |
1823 | member_function_dies, |
1824 | delayed_properties, |
1825 | default_accessibility, |
1826 | is_a_class, |
1827 | layout_info); |
1828 | |
1829 | // Now parse any methods if there were any... |
1830 | size_t num_functions = member_function_dies.Size(); |
1831 | if (num_functions > 0) |
1832 | { |
1833 | for (size_t i=0; i<num_functions; ++i) |
1834 | { |
1835 | dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i)); |
1836 | } |
1837 | } |
1838 | |
1839 | if (class_language == eLanguageTypeObjC) |
1840 | { |
1841 | ConstString class_name (clang_type.GetTypeName()); |
1842 | if (class_name) |
1843 | { |
1844 | DIEArray method_die_offsets; |
1845 | dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); |
1846 | |
1847 | if (!method_die_offsets.empty()) |
1848 | { |
1849 | DWARFDebugInfo* debug_info = dwarf->DebugInfo(); |
1850 | |
1851 | const size_t num_matches = method_die_offsets.size(); |
1852 | for (size_t i=0; i<num_matches; ++i) |
1853 | { |
1854 | const dw_offset_t die_offset = method_die_offsets[i]; |
1855 | DWARFDIE method_die = debug_info->GetDIE (die_offset); |
1856 | |
1857 | if (method_die) |
1858 | method_die.ResolveType (); |
1859 | } |
1860 | } |
1861 | |
1862 | for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end(); |
1863 | pi != pe; |
1864 | ++pi) |
1865 | pi->Finalize(); |
1866 | } |
1867 | } |
1868 | |
1869 | // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we |
1870 | // need to tell the clang type it is actually a class. |
1871 | if (class_language != eLanguageTypeObjC) |
1872 | { |
1873 | if (is_a_class && tag_decl_kind != clang::TTK_Class) |
1874 | m_ast.SetTagTypeKind (ClangASTContext::GetQualType(clang_type), clang::TTK_Class); |
1875 | } |
1876 | |
1877 | // Since DW_TAG_structure_type gets used for both classes |
1878 | // and structures, we may need to set any DW_TAG_member |
1879 | // fields to have a "private" access if none was specified. |
1880 | // When we parsed the child members we tracked that actual |
1881 | // accessibility value for each DW_TAG_member in the |
1882 | // "member_accessibilities" array. If the value for the |
1883 | // member is zero, then it was set to the "default_accessibility" |
1884 | // which for structs was "public". Below we correct this |
1885 | // by setting any fields to "private" that weren't correctly |
1886 | // set. |
1887 | if (is_a_class && !member_accessibilities.empty()) |
1888 | { |
1889 | // This is a class and all members that didn't have |
1890 | // their access specified are private. |
1891 | m_ast.SetDefaultAccessForRecordFields (m_ast.GetAsRecordDecl(clang_type), |
1892 | eAccessPrivate, |
1893 | &member_accessibilities.front(), |
1894 | member_accessibilities.size()); |
1895 | } |
1896 | |
1897 | if (!base_classes.empty()) |
1898 | { |
1899 | // Make sure all base classes refer to complete types and not |
1900 | // forward declarations. If we don't do this, clang will crash |
1901 | // with an assertion in the call to clang_type.SetBaseClassesForClassType() |
1902 | bool base_class_error = false; |
1903 | for (auto &base_class : base_classes) |
1904 | { |
1905 | clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo(); |
1906 | if (type_source_info) |
1907 | { |
1908 | CompilerType base_class_type (&m_ast, type_source_info->getType().getAsOpaquePtr()); |
1909 | if (base_class_type.GetCompleteType() == false) |
1910 | { |
1911 | if (!base_class_error) |
1912 | { |
1913 | dwarf->GetObjectFile()->GetModule()->ReportError ("DWARF DIE at 0x%8.8x for class '%s' has a base class '%s' that is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s", |
1914 | die.GetOffset(), |
1915 | die.GetName(), |
1916 | base_class_type.GetTypeName().GetCString(), |
1917 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file"); |
1918 | } |
1919 | // We have no choice other than to pretend that the base class |
1920 | // is complete. If we don't do this, clang will crash when we |
1921 | // call setBases() inside of "clang_type.SetBaseClassesForClassType()" |
1922 | // below. Since we provide layout assistance, all ivars in this |
1923 | // class and other classes will be fine, this is the best we can do |
1924 | // short of crashing. |
1925 | |
1926 | ClangASTContext::StartTagDeclarationDefinition (base_class_type); |
1927 | ClangASTContext::CompleteTagDeclarationDefinition (base_class_type); |
1928 | } |
1929 | } |
1930 | } |
1931 | m_ast.SetBaseClassesForClassType (clang_type.GetOpaqueQualType(), |
1932 | &base_classes.front(), |
1933 | base_classes.size()); |
1934 | |
1935 | // Clang will copy each CXXBaseSpecifier in "base_classes" |
1936 | // so we have to free them all. |
1937 | ClangASTContext::DeleteBaseClassSpecifiers (&base_classes.front(), |
1938 | base_classes.size()); |
1939 | } |
1940 | } |
1941 | } |
1942 | |
1943 | ClangASTContext::BuildIndirectFields (clang_type); |
1944 | ClangASTContext::CompleteTagDeclarationDefinition (clang_type); |
1945 | |
1946 | if (!layout_info.field_offsets.empty() || |
1947 | !layout_info.base_offsets.empty() || |
1948 | !layout_info.vbase_offsets.empty() ) |
1949 | { |
1950 | if (type) |
1951 | layout_info.bit_size = type->GetByteSize() * 8; |
1952 | if (layout_info.bit_size == 0) |
1953 | layout_info.bit_size = die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; |
1954 | |
1955 | clang::CXXRecordDecl *record_decl = m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); |
1956 | if (record_decl) |
1957 | { |
1958 | if (log) |
1959 | { |
1960 | ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); |
1961 | |
1962 | if (module_sp) |
1963 | { |
1964 | module_sp->LogMessage (log, |
1965 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u" ", alignment = %" PRIu64"l" "u" ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", |
1966 | static_cast<void*>(clang_type.GetOpaqueQualType()), |
1967 | static_cast<void*>(record_decl), |
1968 | layout_info.bit_size, |
1969 | layout_info.alignment, |
1970 | static_cast<uint32_t>(layout_info.field_offsets.size()), |
1971 | static_cast<uint32_t>(layout_info.base_offsets.size()), |
1972 | static_cast<uint32_t>(layout_info.vbase_offsets.size())); |
1973 | |
1974 | uint32_t idx; |
1975 | { |
1976 | llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator pos, |
1977 | end = layout_info.field_offsets.end(); |
1978 | for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx) |
1979 | { |
1980 | module_sp->LogMessage(log, |
1981 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }", |
1982 | static_cast<void *>(clang_type.GetOpaqueQualType()), |
1983 | idx, |
1984 | static_cast<uint32_t>(pos->second), |
1985 | pos->first->getNameAsString().c_str()); |
1986 | } |
1987 | } |
1988 | |
1989 | { |
1990 | llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator base_pos, |
1991 | base_end = layout_info.base_offsets.end(); |
1992 | for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx) |
1993 | { |
1994 | module_sp->LogMessage(log, |
1995 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }", |
1996 | clang_type.GetOpaqueQualType(), idx, (uint32_t)base_pos->second.getQuantity(), |
1997 | base_pos->first->getNameAsString().c_str()); |
1998 | } |
1999 | } |
2000 | { |
2001 | llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>::const_iterator vbase_pos, |
2002 | vbase_end = layout_info.vbase_offsets.end(); |
2003 | for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx) |
2004 | { |
2005 | module_sp->LogMessage(log, |
2006 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }", |
2007 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
2008 | static_cast<uint32_t>(vbase_pos->second.getQuantity()), |
2009 | vbase_pos->first->getNameAsString().c_str()); |
2010 | } |
2011 | } |
2012 | |
2013 | } |
2014 | } |
2015 | m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); |
2016 | } |
2017 | } |
2018 | } |
2019 | |
2020 | return (bool)clang_type; |
2021 | |
2022 | case DW_TAG_enumeration_type: |
2023 | ClangASTContext::StartTagDeclarationDefinition (clang_type); |
2024 | if (die.HasChildren()) |
2025 | { |
2026 | SymbolContext sc(die.GetLLDBCompileUnit()); |
2027 | bool is_signed = false; |
2028 | clang_type.IsIntegerType(is_signed); |
2029 | ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), die); |
2030 | } |
2031 | ClangASTContext::CompleteTagDeclarationDefinition (clang_type); |
2032 | return (bool)clang_type; |
2033 | |
2034 | default: |
2035 | assert(false && "not a forward clang type decl!")((false && "not a forward clang type decl!") ? static_cast <void> (0) : __assert_fail ("false && \"not a forward clang type decl!\"" , "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2035, __PRETTY_FUNCTION__)); |
2036 | break; |
2037 | } |
2038 | |
2039 | return false; |
2040 | } |
2041 | |
2042 | CompilerDeclContext |
2043 | DWARFASTParserClang::GetDeclContextForUIDFromDWARF (const DWARFDIE &die) |
2044 | { |
2045 | clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE (die); |
2046 | if (clang_decl_ctx) |
2047 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2048 | return CompilerDeclContext(); |
2049 | } |
2050 | |
2051 | CompilerDeclContext |
2052 | DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) |
2053 | { |
2054 | clang::DeclContext *clang_decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); |
2055 | if (clang_decl_ctx) |
2056 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
2057 | return CompilerDeclContext(); |
2058 | } |
2059 | |
2060 | size_t |
2061 | DWARFASTParserClang::ParseChildEnumerators (const SymbolContext& sc, |
2062 | lldb_private::CompilerType &clang_type, |
2063 | bool is_signed, |
2064 | uint32_t enumerator_byte_size, |
2065 | const DWARFDIE &parent_die) |
2066 | { |
2067 | if (!parent_die) |
2068 | return 0; |
2069 | |
2070 | size_t enumerators_added = 0; |
2071 | |
2072 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) |
2073 | { |
2074 | const dw_tag_t tag = die.Tag(); |
2075 | if (tag == DW_TAG_enumerator) |
2076 | { |
2077 | DWARFAttributes attributes; |
2078 | const size_t num_child_attributes = die.GetAttributes(attributes); |
2079 | if (num_child_attributes > 0) |
2080 | { |
2081 | const char *name = NULL__null; |
2082 | bool got_value = false; |
2083 | int64_t enum_value = 0; |
2084 | Declaration decl; |
2085 | |
2086 | uint32_t i; |
2087 | for (i=0; i<num_child_attributes; ++i) |
2088 | { |
2089 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2090 | DWARFFormValue form_value; |
2091 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2092 | { |
2093 | switch (attr) |
2094 | { |
2095 | case DW_AT_const_value: |
2096 | got_value = true; |
2097 | if (is_signed) |
2098 | enum_value = form_value.Signed(); |
2099 | else |
2100 | enum_value = form_value.Unsigned(); |
2101 | break; |
2102 | |
2103 | case DW_AT_name: |
2104 | name = form_value.AsCString(); |
2105 | break; |
2106 | |
2107 | case DW_AT_description: |
2108 | default: |
2109 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
2110 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
2111 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
2112 | case DW_AT_sibling: |
2113 | break; |
2114 | } |
2115 | } |
2116 | } |
2117 | |
2118 | if (name && name[0] && got_value) |
2119 | { |
2120 | m_ast.AddEnumerationValueToEnumerationType (clang_type.GetOpaqueQualType(), |
2121 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), |
2122 | decl, |
2123 | name, |
2124 | enum_value, |
2125 | enumerator_byte_size * 8); |
2126 | ++enumerators_added; |
2127 | } |
2128 | } |
2129 | } |
2130 | } |
2131 | return enumerators_added; |
2132 | } |
2133 | |
2134 | #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) |
2135 | |
2136 | class DIEStack |
2137 | { |
2138 | public: |
2139 | |
2140 | void Push (const DWARFDIE &die) |
2141 | { |
2142 | m_dies.push_back (die); |
2143 | } |
2144 | |
2145 | |
2146 | void LogDIEs (Log *log) |
2147 | { |
2148 | StreamString log_strm; |
2149 | const size_t n = m_dies.size(); |
2150 | log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n); |
2151 | for (size_t i=0; i<n; i++) |
2152 | { |
2153 | std::string qualified_name; |
2154 | const DWARFDIE &die = m_dies[i]; |
2155 | die.GetQualifiedName(qualified_name); |
2156 | log_strm.Printf ("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n", |
2157 | (uint64_t)i, |
2158 | die.GetOffset(), |
2159 | die.GetTagAsCString(), |
2160 | qualified_name.c_str()); |
2161 | } |
2162 | log->PutCString(log_strm.GetData()); |
2163 | } |
2164 | void Pop () |
2165 | { |
2166 | m_dies.pop_back(); |
2167 | } |
2168 | |
2169 | class ScopedPopper |
2170 | { |
2171 | public: |
2172 | ScopedPopper (DIEStack &die_stack) : |
2173 | m_die_stack (die_stack), |
2174 | m_valid (false) |
2175 | { |
2176 | } |
2177 | |
2178 | void |
2179 | Push (const DWARFDIE &die) |
2180 | { |
2181 | m_valid = true; |
2182 | m_die_stack.Push (die); |
2183 | } |
2184 | |
2185 | ~ScopedPopper () |
2186 | { |
2187 | if (m_valid) |
2188 | m_die_stack.Pop(); |
2189 | } |
2190 | |
2191 | |
2192 | |
2193 | protected: |
2194 | DIEStack &m_die_stack; |
2195 | bool m_valid; |
2196 | }; |
2197 | |
2198 | protected: |
2199 | typedef std::vector<DWARFDIE> Stack; |
2200 | Stack m_dies; |
2201 | }; |
2202 | #endif |
2203 | |
2204 | |
2205 | Function * |
2206 | DWARFASTParserClang::ParseFunctionFromDWARF (const SymbolContext& sc, |
2207 | const DWARFDIE &die) |
2208 | { |
2209 | DWARFRangeList func_ranges; |
2210 | const char *name = NULL__null; |
2211 | const char *mangled = NULL__null; |
2212 | int decl_file = 0; |
2213 | int decl_line = 0; |
2214 | int decl_column = 0; |
2215 | int call_file = 0; |
2216 | int call_line = 0; |
2217 | int call_column = 0; |
2218 | DWARFExpression frame_base(die.GetCU()); |
2219 | |
2220 | const dw_tag_t tag = die.Tag(); |
2221 | |
2222 | if (tag != DW_TAG_subprogram) |
2223 | return NULL__null; |
2224 | |
2225 | if (die.GetDIENamesAndRanges (name, |
2226 | mangled, |
2227 | func_ranges, |
2228 | decl_file, |
2229 | decl_line, |
2230 | decl_column, |
2231 | call_file, |
2232 | call_line, |
2233 | call_column, |
2234 | &frame_base)) |
2235 | { |
2236 | |
2237 | // Union of all ranges in the function DIE (if the function is discontiguous) |
2238 | AddressRange func_range; |
2239 | lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); |
2240 | lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); |
2241 | if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) && lowest_func_addr <= highest_func_addr) |
2242 | { |
2243 | ModuleSP module_sp (die.GetModule()); |
2244 | func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList()); |
2245 | if (func_range.GetBaseAddress().IsValid()) |
2246 | func_range.SetByteSize(highest_func_addr - lowest_func_addr); |
2247 | } |
2248 | |
2249 | if (func_range.GetBaseAddress().IsValid()) |
2250 | { |
2251 | Mangled func_name; |
2252 | if (mangled) |
2253 | func_name.SetValue(ConstString(mangled), true); |
2254 | else if (die.GetParent().Tag() == DW_TAG_compile_unit && |
2255 | LanguageRuntime::LanguageIsCPlusPlus(die.GetLanguage()) && |
2256 | name && strcmp(name, "main") != 0) |
2257 | { |
2258 | // If the mangled name is not present in the DWARF, generate the demangled name |
2259 | // using the decl context. We skip if the function is "main" as its name is |
2260 | // never mangled. |
2261 | bool is_static = false; |
2262 | bool is_variadic = false; |
2263 | unsigned type_quals = 0; |
2264 | std::vector<CompilerType> param_types; |
2265 | std::vector<clang::ParmVarDecl*> param_decls; |
2266 | DWARFDeclContext decl_ctx; |
2267 | StreamString sstr; |
2268 | |
2269 | die.GetDWARFDeclContext(decl_ctx); |
2270 | sstr << decl_ctx.GetQualifiedName(); |
2271 | |
2272 | clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE(die, nullptr); |
2273 | ParseChildParameters(sc, |
2274 | containing_decl_ctx, |
2275 | die, |
2276 | true, |
2277 | is_static, |
2278 | is_variadic, |
2279 | param_types, |
2280 | param_decls, |
2281 | type_quals); |
2282 | sstr << "("; |
2283 | for (size_t i = 0; i < param_types.size(); i++) |
2284 | { |
2285 | if (i > 0) |
2286 | sstr << ", "; |
2287 | sstr << param_types[i].GetTypeName(); |
2288 | } |
2289 | if (is_variadic) |
2290 | sstr << ", ..."; |
2291 | sstr << ")"; |
2292 | if (type_quals & clang::Qualifiers::Const) |
2293 | sstr << " const"; |
2294 | |
2295 | func_name.SetValue(ConstString(sstr.GetData()), false); |
2296 | } |
2297 | else |
2298 | func_name.SetValue(ConstString(name), false); |
2299 | |
2300 | FunctionSP func_sp; |
2301 | std::unique_ptr<Declaration> decl_ap; |
2302 | if (decl_file != 0 || decl_line != 0 || decl_column != 0) |
2303 | decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), |
2304 | decl_line, |
2305 | decl_column)); |
2306 | |
2307 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
2308 | // Supply the type _only_ if it has already been parsed |
2309 | Type *func_type = dwarf->m_die_to_type.lookup (die.GetDIE()); |
2310 | |
2311 | assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED)((func_type == __null || func_type != ((lldb_private::Type*)1 )) ? static_cast<void> (0) : __assert_fail ("func_type == __null || func_type != ((lldb_private::Type*)1)" , "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2311, __PRETTY_FUNCTION__)); |
2312 | |
2313 | if (dwarf->FixupAddress (func_range.GetBaseAddress())) |
2314 | { |
2315 | const user_id_t func_user_id = die.GetID(); |
2316 | func_sp.reset(new Function (sc.comp_unit, |
2317 | func_user_id, // UserID is the DIE offset |
2318 | func_user_id, |
2319 | func_name, |
2320 | func_type, |
2321 | func_range)); // first address range |
2322 | |
2323 | if (func_sp.get() != NULL__null) |
2324 | { |
2325 | if (frame_base.IsValid()) |
2326 | func_sp->GetFrameBaseExpression() = frame_base; |
2327 | sc.comp_unit->AddFunction(func_sp); |
2328 | return func_sp.get(); |
2329 | } |
2330 | } |
2331 | } |
2332 | } |
2333 | return NULL__null; |
2334 | } |
2335 | |
2336 | |
2337 | size_t |
2338 | DWARFASTParserClang::ParseChildMembers (const SymbolContext& sc, |
2339 | const DWARFDIE &parent_die, |
2340 | CompilerType &class_clang_type, |
2341 | const LanguageType class_language, |
2342 | std::vector<clang::CXXBaseSpecifier *>& base_classes, |
2343 | std::vector<int>& member_accessibilities, |
2344 | DWARFDIECollection& member_function_dies, |
2345 | DelayedPropertyList& delayed_properties, |
2346 | AccessType& default_accessibility, |
2347 | bool &is_a_class, |
2348 | LayoutInfo &layout_info) |
2349 | { |
2350 | if (!parent_die) |
2351 | return 0; |
2352 | |
2353 | size_t count = 0; |
2354 | uint32_t member_idx = 0; |
2355 | BitfieldInfo last_field_info; |
2356 | |
2357 | ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); |
2358 | ClangASTContext* ast = class_clang_type.GetTypeSystem()->AsClangASTContext(); |
2359 | if (ast == nullptr) |
2360 | return 0; |
2361 | |
2362 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) |
2363 | { |
2364 | dw_tag_t tag = die.Tag(); |
2365 | |
2366 | switch (tag) |
2367 | { |
2368 | case DW_TAG_member: |
2369 | case DW_TAG_APPLE_property: |
2370 | { |
2371 | DWARFAttributes attributes; |
2372 | const size_t num_attributes = die.GetAttributes (attributes); |
2373 | if (num_attributes > 0) |
2374 | { |
2375 | Declaration decl; |
2376 | //DWARFExpression location; |
2377 | const char *name = NULL__null; |
2378 | const char *prop_name = NULL__null; |
2379 | const char *prop_getter_name = NULL__null; |
2380 | const char *prop_setter_name = NULL__null; |
2381 | uint32_t prop_attributes = 0; |
2382 | |
2383 | |
2384 | bool is_artificial = false; |
2385 | lldb::user_id_t encoding_uid = LLDB_INVALID_UID(18446744073709551615UL); |
2386 | AccessType accessibility = eAccessNone; |
2387 | uint32_t member_byte_offset = UINT32_MAX(4294967295U); |
2388 | size_t byte_size = 0; |
2389 | size_t bit_offset = 0; |
2390 | size_t bit_size = 0; |
2391 | bool is_external = false; // On DW_TAG_members, this means the member is static |
2392 | uint32_t i; |
2393 | for (i=0; i<num_attributes && !is_artificial; ++i) |
2394 | { |
2395 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2396 | DWARFFormValue form_value; |
2397 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2398 | { |
2399 | switch (attr) |
2400 | { |
2401 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
2402 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
2403 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
2404 | case DW_AT_name: name = form_value.AsCString(); break; |
2405 | case DW_AT_type: encoding_uid = form_value.Reference(); break; |
2406 | case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; |
2407 | case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; |
2408 | case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; |
2409 | case DW_AT_data_member_location: |
2410 | if (form_value.BlockData()) |
2411 | { |
2412 | Value initialValue(0); |
2413 | Value memberOffset(0); |
2414 | const DWARFDataExtractor& debug_info_data = die.GetDWARF()->get_debug_info_data(); |
2415 | uint32_t block_length = form_value.Unsigned(); |
2416 | uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); |
2417 | if (DWARFExpression::Evaluate(NULL__null, // ExecutionContext * |
2418 | NULL__null, // ClangExpressionVariableList * |
2419 | NULL__null, // ClangExpressionDeclMap * |
2420 | NULL__null, // RegisterContext * |
2421 | module_sp, |
2422 | debug_info_data, |
2423 | die.GetCU(), |
2424 | block_offset, |
2425 | block_length, |
2426 | eRegisterKindDWARF, |
2427 | &initialValue, |
2428 | memberOffset, |
2429 | NULL__null)) |
2430 | { |
2431 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
2432 | } |
2433 | } |
2434 | else |
2435 | { |
2436 | // With DWARF 3 and later, if the value is an integer constant, |
2437 | // this form value is the offset in bytes from the beginning |
2438 | // of the containing entity. |
2439 | member_byte_offset = form_value.Unsigned(); |
2440 | } |
2441 | break; |
2442 | |
2443 | case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; |
2444 | case DW_AT_artificial: is_artificial = form_value.Boolean(); break; |
2445 | case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(); |
2446 | break; |
2447 | case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(); |
2448 | break; |
2449 | case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(); |
2450 | break; |
2451 | case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; |
2452 | case DW_AT_external: is_external = form_value.Boolean(); break; |
2453 | |
2454 | default: |
2455 | case DW_AT_declaration: |
2456 | case DW_AT_description: |
2457 | case DW_AT_mutable: |
2458 | case DW_AT_visibility: |
2459 | case DW_AT_sibling: |
2460 | break; |
2461 | } |
2462 | } |
2463 | } |
2464 | |
2465 | if (prop_name) |
2466 | { |
2467 | ConstString fixed_getter; |
2468 | ConstString fixed_setter; |
2469 | |
2470 | // Check if the property getter/setter were provided as full |
2471 | // names. We want basenames, so we extract them. |
2472 | |
2473 | if (prop_getter_name && prop_getter_name[0] == '-') |
2474 | { |
2475 | ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true); |
2476 | prop_getter_name = prop_getter_method.GetSelector().GetCString(); |
2477 | } |
2478 | |
2479 | if (prop_setter_name && prop_setter_name[0] == '-') |
2480 | { |
2481 | ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true); |
2482 | prop_setter_name = prop_setter_method.GetSelector().GetCString(); |
2483 | } |
2484 | |
2485 | // If the names haven't been provided, they need to be |
2486 | // filled in. |
2487 | |
2488 | if (!prop_getter_name) |
2489 | { |
2490 | prop_getter_name = prop_name; |
2491 | } |
2492 | if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly)) |
2493 | { |
2494 | StreamString ss; |
2495 | |
2496 | ss.Printf("set%c%s:", |
2497 | toupper(prop_name[0]), |
2498 | &prop_name[1]); |
2499 | |
2500 | fixed_setter.SetCString(ss.GetData()); |
2501 | prop_setter_name = fixed_setter.GetCString(); |
2502 | } |
2503 | } |
2504 | |
2505 | // Clang has a DWARF generation bug where sometimes it |
2506 | // represents fields that are references with bad byte size |
2507 | // and bit size/offset information such as: |
2508 | // |
2509 | // DW_AT_byte_size( 0x00 ) |
2510 | // DW_AT_bit_size( 0x40 ) |
2511 | // DW_AT_bit_offset( 0xffffffffffffffc0 ) |
2512 | // |
2513 | // So check the bit offset to make sure it is sane, and if |
2514 | // the values are not sane, remove them. If we don't do this |
2515 | // then we will end up with a crash if we try to use this |
2516 | // type in an expression when clang becomes unhappy with its |
2517 | // recycled debug info. |
2518 | |
2519 | if (bit_offset > 128) |
2520 | { |
2521 | bit_size = 0; |
2522 | bit_offset = 0; |
2523 | } |
2524 | |
2525 | // FIXME: Make Clang ignore Objective-C accessibility for expressions |
2526 | if (class_language == eLanguageTypeObjC || |
2527 | class_language == eLanguageTypeObjC_plus_plus) |
2528 | accessibility = eAccessNone; |
2529 | |
2530 | if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) |
2531 | { |
2532 | // Not all compilers will mark the vtable pointer |
2533 | // member as artificial (llvm-gcc). We can't have |
2534 | // the virtual members in our classes otherwise it |
2535 | // throws off all child offsets since we end up |
2536 | // having and extra pointer sized member in our |
2537 | // class layouts. |
2538 | is_artificial = true; |
2539 | } |
2540 | |
2541 | // Handle static members |
2542 | if (is_external && member_byte_offset == UINT32_MAX(4294967295U)) |
2543 | { |
2544 | Type *var_type = die.ResolveTypeUID(encoding_uid); |
2545 | |
2546 | if (var_type) |
2547 | { |
2548 | if (accessibility == eAccessNone) |
2549 | accessibility = eAccessPublic; |
2550 | ClangASTContext::AddVariableToRecordType (class_clang_type, |
2551 | name, |
2552 | var_type->GetLayoutCompilerType (), |
2553 | accessibility); |
2554 | } |
2555 | break; |
2556 | } |
2557 | |
2558 | if (is_artificial == false) |
2559 | { |
2560 | Type *member_type = die.ResolveTypeUID(encoding_uid); |
2561 | |
2562 | clang::FieldDecl *field_decl = NULL__null; |
2563 | if (tag == DW_TAG_member) |
2564 | { |
2565 | if (member_type) |
2566 | { |
2567 | if (accessibility == eAccessNone) |
2568 | accessibility = default_accessibility; |
2569 | member_accessibilities.push_back(accessibility); |
2570 | |
2571 | uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX(4294967295U) ? 0 : (member_byte_offset * 8)); |
2572 | if (bit_size > 0) |
2573 | { |
2574 | |
2575 | BitfieldInfo this_field_info; |
2576 | this_field_info.bit_offset = field_bit_offset; |
2577 | this_field_info.bit_size = bit_size; |
2578 | |
2579 | ///////////////////////////////////////////////////////////// |
2580 | // How to locate a field given the DWARF debug information |
2581 | // |
2582 | // AT_byte_size indicates the size of the word in which the |
2583 | // bit offset must be interpreted. |
2584 | // |
2585 | // AT_data_member_location indicates the byte offset of the |
2586 | // word from the base address of the structure. |
2587 | // |
2588 | // AT_bit_offset indicates how many bits into the word |
2589 | // (according to the host endianness) the low-order bit of |
2590 | // the field starts. AT_bit_offset can be negative. |
2591 | // |
2592 | // AT_bit_size indicates the size of the field in bits. |
2593 | ///////////////////////////////////////////////////////////// |
2594 | |
2595 | if (byte_size == 0) |
2596 | byte_size = member_type->GetByteSize(); |
2597 | |
2598 | if (die.GetDWARF()->GetObjectFile()->GetByteOrder() == eByteOrderLittle) |
2599 | { |
2600 | this_field_info.bit_offset += byte_size * 8; |
2601 | this_field_info.bit_offset -= (bit_offset + bit_size); |
2602 | } |
2603 | else |
2604 | { |
2605 | this_field_info.bit_offset += bit_offset; |
2606 | } |
2607 | |
2608 | // Update the field bit offset we will report for layout |
2609 | field_bit_offset = this_field_info.bit_offset; |
2610 | |
2611 | // If the member to be emitted did not start on a character boundary and there is |
2612 | // empty space between the last field and this one, then we need to emit an |
2613 | // anonymous member filling up the space up to its start. There are three cases |
2614 | // here: |
2615 | // |
2616 | // 1 If the previous member ended on a character boundary, then we can emit an |
2617 | // anonymous member starting at the most recent character boundary. |
2618 | // |
2619 | // 2 If the previous member did not end on a character boundary and the distance |
2620 | // from the end of the previous member to the current member is less than a |
2621 | // word width, then we can emit an anonymous member starting right after the |
2622 | // previous member and right before this member. |
2623 | // |
2624 | // 3 If the previous member did not end on a character boundary and the distance |
2625 | // from the end of the previous member to the current member is greater than |
2626 | // or equal a word width, then we act as in Case 1. |
2627 | |
2628 | const uint64_t character_width = 8; |
2629 | const uint64_t word_width = 32; |
2630 | |
2631 | // Objective-C has invalid DW_AT_bit_offset values in older versions |
2632 | // of clang, so we have to be careful and only insert unnamed bitfields |
2633 | // if we have a new enough clang. |
2634 | bool detect_unnamed_bitfields = true; |
2635 | |
2636 | if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus) |
2637 | detect_unnamed_bitfields = die.GetCU()->Supports_unnamed_objc_bitfields (); |
2638 | |
2639 | if (detect_unnamed_bitfields) |
2640 | { |
2641 | BitfieldInfo anon_field_info; |
2642 | |
2643 | if ((this_field_info.bit_offset % character_width) != 0) // not char aligned |
2644 | { |
2645 | uint64_t last_field_end = 0; |
2646 | |
2647 | if (last_field_info.IsValid()) |
2648 | last_field_end = last_field_info.bit_offset + last_field_info.bit_size; |
2649 | |
2650 | if (this_field_info.bit_offset != last_field_end) |
2651 | { |
2652 | if (((last_field_end % character_width) == 0) || // case 1 |
2653 | (this_field_info.bit_offset - last_field_end >= word_width)) // case 3 |
2654 | { |
2655 | anon_field_info.bit_size = this_field_info.bit_offset % character_width; |
2656 | anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size; |
2657 | } |
2658 | else // case 2 |
2659 | { |
2660 | anon_field_info.bit_size = this_field_info.bit_offset - last_field_end; |
2661 | anon_field_info.bit_offset = last_field_end; |
2662 | } |
2663 | } |
2664 | } |
2665 | |
2666 | if (anon_field_info.IsValid()) |
2667 | { |
2668 | clang::FieldDecl *unnamed_bitfield_decl = |
2669 | ClangASTContext::AddFieldToRecordType (class_clang_type, |
2670 | NULL__null, |
2671 | m_ast.GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width), |
2672 | accessibility, |
2673 | anon_field_info.bit_size); |
2674 | |
2675 | layout_info.field_offsets.insert( |
2676 | std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset)); |
2677 | } |
2678 | } |
2679 | last_field_info = this_field_info; |
2680 | } |
2681 | else |
2682 | { |
2683 | last_field_info.Clear(); |
2684 | } |
2685 | |
2686 | CompilerType member_clang_type = member_type->GetLayoutCompilerType (); |
2687 | |
2688 | { |
2689 | // Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>). |
2690 | // If the current field is at the end of the structure, then there is definitely no room for extra |
2691 | // elements and we override the type to array[0]. |
2692 | |
2693 | CompilerType member_array_element_type; |
2694 | uint64_t member_array_size; |
2695 | bool member_array_is_incomplete; |
2696 | |
2697 | if (member_clang_type.IsArrayType(&member_array_element_type, |
2698 | &member_array_size, |
2699 | &member_array_is_incomplete) && |
2700 | !member_array_is_incomplete) |
2701 | { |
2702 | uint64_t parent_byte_size = parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX(18446744073709551615UL)); |
2703 | |
2704 | if (member_byte_offset >= parent_byte_size) |
2705 | { |
2706 | if (member_array_size != 1) |
2707 | { |
2708 | module_sp->ReportError ("0x%8.8" PRIx64"l" "x" ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x", |
2709 | die.GetID(), |
2710 | name, |
2711 | encoding_uid, |
2712 | parent_die.GetID()); |
2713 | } |
2714 | |
2715 | member_clang_type = m_ast.CreateArrayType(member_array_element_type, 0, false); |
2716 | } |
2717 | } |
2718 | } |
2719 | |
2720 | field_decl = ClangASTContext::AddFieldToRecordType (class_clang_type, |
2721 | name, |
2722 | member_clang_type, |
2723 | accessibility, |
2724 | bit_size); |
2725 | |
2726 | m_ast.SetMetadataAsUserID (field_decl, die.GetID()); |
2727 | |
2728 | layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset)); |
2729 | } |
2730 | else |
2731 | { |
2732 | if (name) |
2733 | module_sp->ReportError ("0x%8.8" PRIx64"l" "x" ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" " which was unable to be parsed", |
2734 | die.GetID(), |
2735 | name, |
2736 | encoding_uid); |
2737 | else |
2738 | module_sp->ReportError ("0x%8.8" PRIx64"l" "x" ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x" " which was unable to be parsed", |
2739 | die.GetID(), |
2740 | encoding_uid); |
2741 | } |
2742 | } |
2743 | |
2744 | if (prop_name != NULL__null && member_type) |
2745 | { |
2746 | clang::ObjCIvarDecl *ivar_decl = NULL__null; |
2747 | |
2748 | if (field_decl) |
2749 | { |
2750 | ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); |
2751 | assert (ivar_decl != NULL)((ivar_decl != __null) ? static_cast<void> (0) : __assert_fail ("ivar_decl != __null", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2751, __PRETTY_FUNCTION__)); |
2752 | } |
2753 | |
2754 | ClangASTMetadata metadata; |
2755 | metadata.SetUserID (die.GetID()); |
2756 | delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type, |
2757 | prop_name, |
2758 | member_type->GetLayoutCompilerType (), |
2759 | ivar_decl, |
2760 | prop_setter_name, |
2761 | prop_getter_name, |
2762 | prop_attributes, |
2763 | &metadata)); |
2764 | |
2765 | if (ivar_decl) |
2766 | m_ast.SetMetadataAsUserID (ivar_decl, die.GetID()); |
2767 | } |
2768 | } |
2769 | } |
2770 | ++member_idx; |
2771 | } |
2772 | break; |
2773 | |
2774 | case DW_TAG_subprogram: |
2775 | // Let the type parsing code handle this one for us. |
2776 | member_function_dies.Append (die); |
2777 | break; |
2778 | |
2779 | case DW_TAG_inheritance: |
2780 | { |
2781 | is_a_class = true; |
2782 | if (default_accessibility == eAccessNone) |
2783 | default_accessibility = eAccessPrivate; |
2784 | // TODO: implement DW_TAG_inheritance type parsing |
2785 | DWARFAttributes attributes; |
2786 | const size_t num_attributes = die.GetAttributes (attributes); |
2787 | if (num_attributes > 0) |
2788 | { |
2789 | Declaration decl; |
2790 | DWARFExpression location(die.GetCU()); |
2791 | lldb::user_id_t encoding_uid = LLDB_INVALID_UID(18446744073709551615UL); |
2792 | AccessType accessibility = default_accessibility; |
2793 | bool is_virtual = false; |
2794 | bool is_base_of_class = true; |
2795 | off_t member_byte_offset = 0; |
2796 | uint32_t i; |
2797 | for (i=0; i<num_attributes; ++i) |
2798 | { |
2799 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2800 | DWARFFormValue form_value; |
2801 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2802 | { |
2803 | switch (attr) |
2804 | { |
2805 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
2806 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
2807 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
2808 | case DW_AT_type: encoding_uid = form_value.Reference(); break; |
2809 | case DW_AT_data_member_location: |
2810 | if (form_value.BlockData()) |
2811 | { |
2812 | Value initialValue(0); |
2813 | Value memberOffset(0); |
2814 | const DWARFDataExtractor& debug_info_data = die.GetDWARF()->get_debug_info_data(); |
2815 | uint32_t block_length = form_value.Unsigned(); |
2816 | uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); |
2817 | if (DWARFExpression::Evaluate (NULL__null, |
2818 | NULL__null, |
2819 | NULL__null, |
2820 | NULL__null, |
2821 | module_sp, |
2822 | debug_info_data, |
2823 | die.GetCU(), |
2824 | block_offset, |
2825 | block_length, |
2826 | eRegisterKindDWARF, |
2827 | &initialValue, |
2828 | memberOffset, |
2829 | NULL__null)) |
2830 | { |
2831 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
2832 | } |
2833 | } |
2834 | else |
2835 | { |
2836 | // With DWARF 3 and later, if the value is an integer constant, |
2837 | // this form value is the offset in bytes from the beginning |
2838 | // of the containing entity. |
2839 | member_byte_offset = form_value.Unsigned(); |
2840 | } |
2841 | break; |
2842 | |
2843 | case DW_AT_accessibility: |
2844 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
2845 | break; |
2846 | |
2847 | case DW_AT_virtuality: |
2848 | is_virtual = form_value.Boolean(); |
2849 | break; |
2850 | |
2851 | case DW_AT_sibling: |
2852 | break; |
2853 | |
2854 | default: |
2855 | break; |
2856 | } |
2857 | } |
2858 | } |
2859 | |
2860 | Type *base_class_type = die.ResolveTypeUID(encoding_uid); |
2861 | if (base_class_type == NULL__null) |
2862 | { |
2863 | module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to resolve the base class at 0x%8.8" PRIx64"l" "x" " from enclosing type 0x%8.8x. \nPlease file a bug and attach the file at the start of this error message", |
2864 | die.GetOffset(), |
2865 | encoding_uid, |
2866 | parent_die.GetOffset()); |
2867 | break; |
2868 | } |
2869 | |
2870 | CompilerType base_class_clang_type = base_class_type->GetFullCompilerType (); |
2871 | assert (base_class_clang_type)((base_class_clang_type) ? static_cast<void> (0) : __assert_fail ("base_class_clang_type", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2871, __PRETTY_FUNCTION__)); |
2872 | if (class_language == eLanguageTypeObjC) |
2873 | { |
2874 | ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); |
2875 | } |
2876 | else |
2877 | { |
2878 | base_classes.push_back (ast->CreateBaseClassSpecifier (base_class_clang_type.GetOpaqueQualType(), |
2879 | accessibility, |
2880 | is_virtual, |
2881 | is_base_of_class)); |
2882 | |
2883 | if (is_virtual) |
2884 | { |
2885 | // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't |
2886 | // give us a constant offset, but gives us a DWARF expressions that requires an actual object |
2887 | // in memory. the DW_AT_data_member_location for a virtual base class looks like: |
2888 | // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus ) |
2889 | // Given this, there is really no valid response we can give to clang for virtual base |
2890 | // class offsets, and this should eventually be removed from LayoutRecordType() in the external |
2891 | // AST source in clang. |
2892 | } |
2893 | else |
2894 | { |
2895 | layout_info.base_offsets.insert( |
2896 | std::make_pair(ast->GetAsCXXRecordDecl(base_class_clang_type.GetOpaqueQualType()), |
2897 | clang::CharUnits::fromQuantity(member_byte_offset))); |
2898 | } |
2899 | } |
2900 | } |
2901 | } |
2902 | break; |
2903 | |
2904 | default: |
2905 | break; |
2906 | } |
2907 | } |
2908 | |
2909 | return count; |
2910 | } |
2911 | |
2912 | |
2913 | size_t |
2914 | DWARFASTParserClang::ParseChildParameters (const SymbolContext& sc, |
2915 | clang::DeclContext *containing_decl_ctx, |
2916 | const DWARFDIE &parent_die, |
2917 | bool skip_artificial, |
2918 | bool &is_static, |
2919 | bool &is_variadic, |
2920 | std::vector<CompilerType>& function_param_types, |
2921 | std::vector<clang::ParmVarDecl*>& function_param_decls, |
2922 | unsigned &type_quals) |
2923 | { |
2924 | if (!parent_die) |
2925 | return 0; |
2926 | |
2927 | size_t arg_idx = 0; |
2928 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) |
2929 | { |
2930 | const dw_tag_t tag = die.Tag(); |
2931 | switch (tag) |
2932 | { |
2933 | case DW_TAG_formal_parameter: |
2934 | { |
2935 | DWARFAttributes attributes; |
2936 | const size_t num_attributes = die.GetAttributes(attributes); |
2937 | if (num_attributes > 0) |
2938 | { |
2939 | const char *name = NULL__null; |
2940 | Declaration decl; |
2941 | dw_offset_t param_type_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
2942 | bool is_artificial = false; |
2943 | // one of None, Auto, Register, Extern, Static, PrivateExtern |
2944 | |
2945 | clang::StorageClass storage = clang::SC_None; |
2946 | uint32_t i; |
2947 | for (i=0; i<num_attributes; ++i) |
2948 | { |
2949 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
2950 | DWARFFormValue form_value; |
2951 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
2952 | { |
2953 | switch (attr) |
2954 | { |
2955 | case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
2956 | case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
2957 | case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
2958 | case DW_AT_name: name = form_value.AsCString(); |
2959 | break; |
2960 | case DW_AT_type: param_type_die_offset = form_value.Reference(); break; |
2961 | case DW_AT_artificial: is_artificial = form_value.Boolean(); break; |
2962 | case DW_AT_location: |
2963 | // if (form_value.BlockData()) |
2964 | // { |
2965 | // const DWARFDataExtractor& debug_info_data = debug_info(); |
2966 | // uint32_t block_length = form_value.Unsigned(); |
2967 | // DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); |
2968 | // } |
2969 | // else |
2970 | // { |
2971 | // } |
2972 | // break; |
2973 | case DW_AT_const_value: |
2974 | case DW_AT_default_value: |
2975 | case DW_AT_description: |
2976 | case DW_AT_endianity: |
2977 | case DW_AT_is_optional: |
2978 | case DW_AT_segment: |
2979 | case DW_AT_variable_parameter: |
2980 | default: |
2981 | case DW_AT_abstract_origin: |
2982 | case DW_AT_sibling: |
2983 | break; |
2984 | } |
2985 | } |
2986 | } |
2987 | |
2988 | bool skip = false; |
2989 | if (skip_artificial) |
2990 | { |
2991 | if (is_artificial) |
2992 | { |
2993 | // In order to determine if a C++ member function is |
2994 | // "const" we have to look at the const-ness of "this"... |
2995 | // Ugly, but that |
2996 | if (arg_idx == 0) |
2997 | { |
2998 | if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) |
2999 | { |
3000 | // Often times compilers omit the "this" name for the |
3001 | // specification DIEs, so we can't rely upon the name |
3002 | // being in the formal parameter DIE... |
3003 | if (name == NULL__null || ::strcmp(name, "this")==0) |
3004 | { |
3005 | Type *this_type = die.ResolveTypeUID (param_type_die_offset); |
3006 | if (this_type) |
3007 | { |
3008 | uint32_t encoding_mask = this_type->GetEncodingMask(); |
3009 | if (encoding_mask & Type::eEncodingIsPointerUID) |
3010 | { |
3011 | is_static = false; |
3012 | |
3013 | if (encoding_mask & (1u << Type::eEncodingIsConstUID)) |
3014 | type_quals |= clang::Qualifiers::Const; |
3015 | if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) |
3016 | type_quals |= clang::Qualifiers::Volatile; |
3017 | } |
3018 | } |
3019 | } |
3020 | } |
3021 | } |
3022 | skip = true; |
3023 | } |
3024 | else |
3025 | { |
3026 | |
3027 | // HACK: Objective C formal parameters "self" and "_cmd" |
3028 | // are not marked as artificial in the DWARF... |
3029 | CompileUnit *comp_unit = die.GetLLDBCompileUnit(); |
3030 | if (comp_unit) |
3031 | { |
3032 | switch (comp_unit->GetLanguage()) |
3033 | { |
3034 | case eLanguageTypeObjC: |
3035 | case eLanguageTypeObjC_plus_plus: |
3036 | if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) |
3037 | skip = true; |
3038 | break; |
3039 | default: |
3040 | break; |
3041 | } |
3042 | } |
3043 | } |
3044 | } |
3045 | |
3046 | if (!skip) |
3047 | { |
3048 | Type *type = die.ResolveTypeUID(param_type_die_offset); |
3049 | if (type) |
3050 | { |
3051 | function_param_types.push_back (type->GetForwardCompilerType ()); |
3052 | |
3053 | clang::ParmVarDecl *param_var_decl = m_ast.CreateParameterDeclaration (name, |
3054 | type->GetForwardCompilerType (), |
3055 | storage); |
3056 | assert(param_var_decl)((param_var_decl) ? static_cast<void> (0) : __assert_fail ("param_var_decl", "/tmp/buildd/llvm-toolchain-snapshot-3.8~svn246424/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3056, __PRETTY_FUNCTION__)); |
3057 | function_param_decls.push_back(param_var_decl); |
3058 | |
3059 | m_ast.SetMetadataAsUserID (param_var_decl, die.GetID()); |
3060 | } |
3061 | } |
3062 | } |
3063 | arg_idx++; |
3064 | } |
3065 | break; |
3066 | |
3067 | case DW_TAG_unspecified_parameters: |
3068 | is_variadic = true; |
3069 | break; |
3070 | |
3071 | case DW_TAG_template_type_parameter: |
3072 | case DW_TAG_template_value_parameter: |
3073 | // The one caller of this was never using the template_param_infos, |
3074 | // and the local variable was taking up a large amount of stack space |
3075 | // in SymbolFileDWARF::ParseType() so this was removed. If we ever need |
3076 | // the template params back, we can add them back. |
3077 | // ParseTemplateDIE (dwarf_cu, die, template_param_infos); |
3078 | break; |
3079 | |
3080 | default: |
3081 | break; |
3082 | } |
3083 | } |
3084 | return arg_idx; |
3085 | } |
3086 | |
3087 | void |
3088 | DWARFASTParserClang::ParseChildArrayInfo (const SymbolContext& sc, |
3089 | const DWARFDIE &parent_die, |
3090 | int64_t& first_index, |
3091 | std::vector<uint64_t>& element_orders, |
3092 | uint32_t& byte_stride, |
3093 | uint32_t& bit_stride) |
3094 | { |
3095 | if (!parent_die) |
3096 | return; |
3097 | |
3098 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) |
3099 | { |
3100 | const dw_tag_t tag = die.Tag(); |
3101 | switch (tag) |
3102 | { |
3103 | case DW_TAG_subrange_type: |
3104 | { |
3105 | DWARFAttributes attributes; |
3106 | const size_t num_child_attributes = die.GetAttributes(attributes); |
3107 | if (num_child_attributes > 0) |
3108 | { |
3109 | uint64_t num_elements = 0; |
3110 | uint64_t lower_bound = 0; |
3111 | uint64_t upper_bound = 0; |
3112 | bool upper_bound_valid = false; |
3113 | uint32_t i; |
3114 | for (i=0; i<num_child_attributes; ++i) |
3115 | { |
3116 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
3117 | DWARFFormValue form_value; |
3118 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
3119 | { |
3120 | switch (attr) |
3121 | { |
3122 | case DW_AT_name: |
3123 | break; |
3124 | |
3125 | case DW_AT_count: |
3126 | num_elements = form_value.Unsigned(); |
3127 | break; |
3128 | |
3129 | case DW_AT_bit_stride: |
3130 | bit_stride = form_value.Unsigned(); |
3131 | break; |
3132 | |
3133 | case DW_AT_byte_stride: |
3134 | byte_stride = form_value.Unsigned(); |
3135 | break; |
3136 | |
3137 | case DW_AT_lower_bound: |
3138 | lower_bound = form_value.Unsigned(); |
3139 | break; |
3140 | |
3141 | case DW_AT_upper_bound: |
3142 | upper_bound_valid = true; |
3143 | upper_bound = form_value.Unsigned(); |
3144 | break; |
3145 | |
3146 | default: |
3147 | case DW_AT_abstract_origin: |
3148 | case DW_AT_accessibility: |
3149 | case DW_AT_allocated: |
3150 | case DW_AT_associated: |
3151 | case DW_AT_data_location: |
3152 | case DW_AT_declaration: |
3153 | case DW_AT_description: |
3154 | case DW_AT_sibling: |
3155 | case DW_AT_threads_scaled: |
3156 | case DW_AT_type: |
3157 | case DW_AT_visibility: |
3158 | break; |
3159 | } |
3160 | } |
3161 | } |
3162 | |
3163 | if (num_elements == 0) |
3164 | { |
3165 | if (upper_bound_valid && upper_bound >= lower_bound) |
3166 | num_elements = upper_bound - lower_bound + 1; |
3167 | } |
3168 | |
3169 | element_orders.push_back (num_elements); |
3170 | } |
3171 | } |
3172 | break; |
3173 | } |
3174 | } |
3175 | } |
3176 | |
3177 | clang::DeclContext * |
3178 | DWARFASTParserClang::GetClangDeclContextForDIE (const DWARFDIE &die) |
3179 | { |
3180 | if (die) |
3181 | { |
3182 | clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE (die); |
3183 | if (decl_ctx) |
3184 | return decl_ctx; |
3185 | |
3186 | bool try_parsing_type = true; |
3187 | switch (die.Tag()) |
3188 | { |
3189 | case DW_TAG_compile_unit: |
3190 | decl_ctx = m_ast.GetTranslationUnitDecl(); |
3191 | try_parsing_type = false; |
3192 | break; |
3193 | |
3194 | case DW_TAG_namespace: |
3195 | decl_ctx = ResolveNamespaceDIE (die); |
3196 | try_parsing_type = false; |
3197 | break; |
3198 | |
3199 | default: |
3200 | break; |
3201 | } |
3202 | |
3203 | if (decl_ctx == nullptr && try_parsing_type) |
3204 | { |
3205 | Type* type = die.GetDWARF()->ResolveType (die); |
3206 | if (type) |
3207 | decl_ctx = GetCachedClangDeclContextForDIE (die); |
3208 | } |
3209 | |
3210 | if (decl_ctx) |
3211 | { |
3212 | LinkDeclContextToDIE (decl_ctx, die); |
3213 | return decl_ctx; |
3214 | } |
3215 | } |
3216 | return nullptr; |
3217 | } |
3218 | |
3219 | clang::NamespaceDecl * |
3220 | DWARFASTParserClang::ResolveNamespaceDIE (const DWARFDIE &die) |
3221 | { |
3222 | if (die && die.Tag() == DW_TAG_namespace) |
3223 | { |
3224 | // See if we already parsed this namespace DIE and associated it with a |
3225 | // uniqued namespace declaration |
3226 | clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]); |
3227 | if (namespace_decl) |
3228 | return namespace_decl; |
3229 | else |
3230 | { |
3231 | const char *namespace_name = die.GetName(); |
3232 | clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); |
3233 | namespace_decl = m_ast.GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); |
3234 | Log *log = nullptr;// (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
3235 | if (log) |
3236 | { |
3237 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3238 | if (namespace_name) |
3239 | { |
3240 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
3241 | "ASTContext => %p: 0x%8.8" PRIx64"l" "x" ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", |
3242 | static_cast<void*>(m_ast.getASTContext()), |
3243 | die.GetID(), |
3244 | namespace_name, |
3245 | static_cast<void*>(namespace_decl), |
3246 | static_cast<void*>(namespace_decl->getOriginalNamespace())); |
3247 | } |
3248 | else |
3249 | { |
3250 | dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
3251 | "ASTContext => %p: 0x%8.8" PRIx64"l" "x" ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", |
3252 | static_cast<void*>(m_ast.getASTContext()), |
3253 | die.GetID(), |
3254 | static_cast<void*>(namespace_decl), |
3255 | static_cast<void*>(namespace_decl->getOriginalNamespace())); |
3256 | } |
3257 | } |
3258 | |
3259 | if (namespace_decl) |
3260 | LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); |
3261 | return namespace_decl; |
3262 | } |
3263 | } |
3264 | return nullptr; |
3265 | } |
3266 | |
3267 | clang::DeclContext * |
3268 | DWARFASTParserClang::GetClangDeclContextContainingDIE (const DWARFDIE &die, |
3269 | DWARFDIE *decl_ctx_die_copy) |
3270 | { |
3271 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
3272 | |
3273 | DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE (die); |
3274 | |
3275 | if (decl_ctx_die_copy) |
3276 | *decl_ctx_die_copy = decl_ctx_die; |
3277 | |
3278 | if (decl_ctx_die) |
3279 | { |
3280 | clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE (decl_ctx_die); |
3281 | if (clang_decl_ctx) |
3282 | return clang_decl_ctx; |
3283 | } |
3284 | return m_ast.GetTranslationUnitDecl(); |
3285 | } |
3286 | |
3287 | |
3288 | |
3289 | |
3290 | |
3291 | clang::DeclContext * |
3292 | DWARFASTParserClang::GetCachedClangDeclContextForDIE (const DWARFDIE &die) |
3293 | { |
3294 | if (die) |
3295 | { |
3296 | DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); |
3297 | if (pos != m_die_to_decl_ctx.end()) |
3298 | return pos->second; |
3299 | } |
3300 | return nullptr; |
3301 | } |
3302 | |
3303 | void |
3304 | DWARFASTParserClang::LinkDeclContextToDIE (clang::DeclContext *decl_ctx, const DWARFDIE &die) |
3305 | { |
3306 | m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; |
3307 | // There can be many DIEs for a single decl context |
3308 | m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); |
3309 | } |
3310 | |
3311 | bool |
3312 | DWARFASTParserClang::CopyUniqueClassMethodTypes (const DWARFDIE &src_class_die, |
3313 | const DWARFDIE &dst_class_die, |
3314 | lldb_private::Type *class_type, |
3315 | DWARFDIECollection &failures) |
3316 | { |
3317 | if (!class_type || !src_class_die || !dst_class_die) |
3318 | return false; |
3319 | if (src_class_die.Tag() != dst_class_die.Tag()) |
3320 | return false; |
3321 | |
3322 | // We need to complete the class type so we can get all of the method types |
3323 | // parsed so we can then unique those types to their equivalent counterparts |
3324 | // in "dst_cu" and "dst_class_die" |
3325 | class_type->GetFullCompilerType (); |
3326 | |
3327 | DWARFDIE src_die; |
3328 | DWARFDIE dst_die; |
3329 | UniqueCStringMap<DWARFDIE> src_name_to_die; |
3330 | UniqueCStringMap<DWARFDIE> dst_name_to_die; |
3331 | UniqueCStringMap<DWARFDIE> src_name_to_die_artificial; |
3332 | UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial; |
3333 | for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); src_die = src_die.GetSibling()) |
3334 | { |
3335 | if (src_die.Tag() == DW_TAG_subprogram) |
3336 | { |
3337 | // Make sure this is a declaration and not a concrete instance by looking |
3338 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
3339 | // are placed inside the class definitions and shouldn't be included in |
3340 | // the list of things are are tracking here. |
3341 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) |
3342 | { |
3343 | const char *src_name = src_die.GetMangledName (); |
3344 | if (src_name) |
3345 | { |
3346 | ConstString src_const_name(src_name); |
3347 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
3348 | src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die); |
3349 | else |
3350 | src_name_to_die.Append(src_const_name.GetCString(), src_die); |
3351 | } |
3352 | } |
3353 | } |
3354 | } |
3355 | for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); dst_die = dst_die.GetSibling()) |
3356 | { |
3357 | if (dst_die.Tag() == DW_TAG_subprogram) |
3358 | { |
3359 | // Make sure this is a declaration and not a concrete instance by looking |
3360 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
3361 | // are placed inside the class definitions and shouldn't be included in |
3362 | // the list of things are are tracking here. |
3363 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) |
3364 | { |
3365 | const char *dst_name = dst_die.GetMangledName (); |
3366 | if (dst_name) |
3367 | { |
3368 | ConstString dst_const_name(dst_name); |
3369 | if ( dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
3370 | dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die); |
3371 | else |
3372 | dst_name_to_die.Append(dst_const_name.GetCString(), dst_die); |
3373 | } |
3374 | } |
3375 | } |
3376 | } |
3377 | const uint32_t src_size = src_name_to_die.GetSize (); |
3378 | const uint32_t dst_size = dst_name_to_die.GetSize (); |
3379 | Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION)); |
3380 | |
3381 | // Is everything kosher so we can go through the members at top speed? |
3382 | bool fast_path = true; |
3383 | |
3384 | if (src_size != dst_size) |
3385 | { |
3386 | if (src_size != 0 && dst_size != 0) |
3387 | { |
3388 | if (log) |
3389 | log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, but they didn't have the same size (src=%d, dst=%d)", |
3390 | src_class_die.GetOffset(), |
3391 | dst_class_die.GetOffset(), |
3392 | src_size, |
3393 | dst_size); |
3394 | } |
3395 | |
3396 | fast_path = false; |
3397 | } |
3398 | |
3399 | uint32_t idx; |
3400 | |
3401 | if (fast_path) |
3402 | { |
3403 | for (idx = 0; idx < src_size; ++idx) |
3404 | { |
3405 | src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); |
3406 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); |
3407 | |
3408 | if (src_die.Tag() != dst_die.Tag()) |
3409 | { |
3410 | if (log) |
3411 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", |
3412 | src_class_die.GetOffset(), |
3413 | dst_class_die.GetOffset(), |
3414 | src_die.GetOffset(), |
3415 | src_die.GetTagAsCString(), |
3416 | dst_die.GetOffset(), |
3417 | dst_die.GetTagAsCString()); |
3418 | fast_path = false; |
3419 | } |
3420 | |
3421 | const char *src_name = src_die.GetMangledName (); |
3422 | const char *dst_name = dst_die.GetMangledName (); |
3423 | |
3424 | // Make sure the names match |
3425 | if (src_name == dst_name || (strcmp (src_name, dst_name) == 0)) |
3426 | continue; |
3427 | |
3428 | if (log) |
3429 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", |
3430 | src_class_die.GetOffset(), |
3431 | dst_class_die.GetOffset(), |
3432 | src_die.GetOffset(), |
3433 | src_name, |
3434 | dst_die.GetOffset(), |
3435 | dst_name); |
3436 | |
3437 | fast_path = false; |
3438 | } |
3439 | } |
3440 | |
3441 | DWARFASTParserClang *src_dwarf_ast_parser = (DWARFASTParserClang *)src_die.GetDWARFParser(); |
3442 | DWARFASTParserClang *dst_dwarf_ast_parser = (DWARFASTParserClang *)dst_die.GetDWARFParser(); |
3443 | |
3444 | // Now do the work of linking the DeclContexts and Types. |
3445 | if (fast_path) |
3446 | { |
3447 | // We can do this quickly. Just run across the tables index-for-index since |
3448 | // we know each node has matching names and tags. |
3449 | for (idx = 0; idx < src_size; ++idx) |
3450 | { |
3451 | src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); |
3452 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); |
3453 | |
3454 | clang::DeclContext *src_decl_ctx = src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
3455 | if (src_decl_ctx) |
3456 | { |
3457 | if (log) |
3458 | log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
3459 | static_cast<void*>(src_decl_ctx), |
3460 | src_die.GetOffset(), dst_die.GetOffset()); |
3461 | dst_dwarf_ast_parser->LinkDeclContextToDIE (src_decl_ctx, dst_die); |
3462 | } |
3463 | else |
3464 | { |
3465 | if (log) |
3466 | log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", |
3467 | src_die.GetOffset(), dst_die.GetOffset()); |
3468 | } |
3469 | |
3470 | Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; |
3471 | if (src_child_type) |
3472 | { |
3473 | if (log) |
3474 | log->Printf ("uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
3475 | static_cast<void*>(src_child_type), |
3476 | src_child_type->GetID(), |
3477 | src_die.GetOffset(), dst_die.GetOffset()); |
3478 | dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; |
3479 | } |
3480 | else |
3481 | { |
3482 | if (log) |
3483 | log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); |
3484 | } |
3485 | } |
3486 | } |
3487 | else |
3488 | { |
3489 | // We must do this slowly. For each member of the destination, look |
3490 | // up a member in the source with the same name, check its tag, and |
3491 | // unique them if everything matches up. Report failures. |
3492 | |
3493 | if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) |
3494 | { |
3495 | src_name_to_die.Sort(); |
3496 | |
3497 | for (idx = 0; idx < dst_size; ++idx) |
3498 | { |
3499 | const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx); |
3500 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
3501 | src_die = src_name_to_die.Find(dst_name, DWARFDIE()); |
3502 | |
3503 | if (src_die && (src_die.Tag() == dst_die.Tag())) |
3504 | { |
3505 | clang::DeclContext *src_decl_ctx = src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
3506 | if (src_decl_ctx) |
3507 | { |
3508 | if (log) |
3509 | log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
3510 | static_cast<void*>(src_decl_ctx), |
3511 | src_die.GetOffset(), |
3512 | dst_die.GetOffset()); |
3513 | dst_dwarf_ast_parser->LinkDeclContextToDIE (src_decl_ctx, dst_die); |
3514 | } |
3515 | else |
3516 | { |
3517 | if (log) |
3518 | log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); |
3519 | } |
3520 | |
3521 | Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; |
3522 | if (src_child_type) |
3523 | { |
3524 | if (log) |
3525 | log->Printf ("uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
3526 | static_cast<void*>(src_child_type), |
3527 | src_child_type->GetID(), |
3528 | src_die.GetOffset(), |
3529 | dst_die.GetOffset()); |
3530 | dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; |
3531 | } |
3532 | else |
3533 | { |
3534 | if (log) |
3535 | log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); |
3536 | } |
3537 | } |
3538 | else |
3539 | { |
3540 | if (log) |
3541 | log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die.GetOffset()); |
3542 | |
3543 | failures.Append(dst_die); |
3544 | } |
3545 | } |
3546 | } |
3547 | } |
3548 | |
3549 | const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize (); |
3550 | const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize (); |
3551 | |
3552 | if (src_size_artificial && dst_size_artificial) |
3553 | { |
3554 | dst_name_to_die_artificial.Sort(); |
3555 | |
3556 | for (idx = 0; idx < src_size_artificial; ++idx) |
3557 | { |
3558 | const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx); |
3559 | src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx); |
3560 | dst_die = dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); |
3561 | |
3562 | if (dst_die) |
3563 | { |
3564 | // Both classes have the artificial types, link them |
3565 | clang::DeclContext *src_decl_ctx = src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
3566 | if (src_decl_ctx) |
3567 | { |
3568 | if (log) |
3569 | log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
3570 | static_cast<void*>(src_decl_ctx), |
3571 | src_die.GetOffset(), dst_die.GetOffset()); |
3572 | dst_dwarf_ast_parser->LinkDeclContextToDIE (src_decl_ctx, dst_die); |
3573 | } |
3574 | else |
3575 | { |
3576 | if (log) |
3577 | log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); |
3578 | } |
3579 | |
3580 | Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; |
3581 | if (src_child_type) |
3582 | { |
3583 | if (log) |
3584 | log->Printf ("uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
3585 | static_cast<void*>(src_child_type), |
3586 | src_child_type->GetID(), |
3587 | src_die.GetOffset(), dst_die.GetOffset()); |
3588 | dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; |
3589 | } |
3590 | else |
3591 | { |
3592 | if (log) |
3593 | log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); |
3594 | } |
3595 | } |
3596 | } |
3597 | } |
3598 | |
3599 | if (dst_size_artificial) |
3600 | { |
3601 | for (idx = 0; idx < dst_size_artificial; ++idx) |
3602 | { |
3603 | const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx); |
3604 | dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx); |
3605 | if (log) |
3606 | log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die.GetOffset(), dst_name_artificial); |
3607 | |
3608 | failures.Append(dst_die); |
3609 | } |
3610 | } |
3611 | |
3612 | return (failures.Size() != 0); |
3613 | } |
3614 | |
3615 | |
3616 | bool |
3617 | DWARFASTParserClang::LayoutRecordType(const clang::RecordDecl *record_decl, |
3618 | uint64_t &bit_size, |
3619 | uint64_t &alignment, |
3620 | llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets, |
3621 | llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, |
3622 | llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) |
3623 | { |
3624 | RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl); |
3625 | bool success = false; |
3626 | base_offsets.clear(); |
3627 | vbase_offsets.clear(); |
3628 | if (pos != m_record_decl_to_layout_map.end()) |
3629 | { |
3630 | bit_size = pos->second.bit_size; |
3631 | alignment = pos->second.alignment; |
3632 | field_offsets.swap(pos->second.field_offsets); |
3633 | base_offsets.swap (pos->second.base_offsets); |
3634 | vbase_offsets.swap (pos->second.vbase_offsets); |
3635 | m_record_decl_to_layout_map.erase(pos); |
3636 | success = true; |
3637 | } |
3638 | else |
3639 | { |
3640 | bit_size = 0; |
3641 | alignment = 0; |
3642 | field_offsets.clear(); |
3643 | } |
3644 | return success; |
3645 | } |