| File: | tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp |
| Warning: | line 1357, column 21 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 <stdlib.h> |
| 11 | |
| 12 | #include "DWARFASTParserClang.h" |
| 13 | #include "DWARFCompileUnit.h" |
| 14 | #include "DWARFDIE.h" |
| 15 | #include "DWARFDIECollection.h" |
| 16 | #include "DWARFDebugInfo.h" |
| 17 | #include "DWARFDeclContext.h" |
| 18 | #include "DWARFDefines.h" |
| 19 | #include "SymbolFileDWARF.h" |
| 20 | #include "SymbolFileDWARFDebugMap.h" |
| 21 | #include "UniqueDWARFASTType.h" |
| 22 | |
| 23 | #include "Plugins/Language/ObjC/ObjCLanguage.h" |
| 24 | #include "lldb/Core/Module.h" |
| 25 | #include "lldb/Core/Value.h" |
| 26 | #include "lldb/Host/Host.h" |
| 27 | #include "lldb/Interpreter/Args.h" |
| 28 | #include "lldb/Symbol/ClangASTImporter.h" |
| 29 | #include "lldb/Symbol/ClangExternalASTSourceCommon.h" |
| 30 | #include "lldb/Symbol/ClangUtil.h" |
| 31 | #include "lldb/Symbol/CompileUnit.h" |
| 32 | #include "lldb/Symbol/Function.h" |
| 33 | #include "lldb/Symbol/ObjectFile.h" |
| 34 | #include "lldb/Symbol/SymbolVendor.h" |
| 35 | #include "lldb/Symbol/TypeList.h" |
| 36 | #include "lldb/Symbol/TypeMap.h" |
| 37 | #include "lldb/Target/Language.h" |
| 38 | #include "lldb/Utility/LLDBAssert.h" |
| 39 | #include "lldb/Utility/Log.h" |
| 40 | #include "lldb/Utility/StreamString.h" |
| 41 | |
| 42 | #include "clang/AST/DeclCXX.h" |
| 43 | #include "clang/AST/DeclObjC.h" |
| 44 | |
| 45 | #include <map> |
| 46 | #include <vector> |
| 47 | |
| 48 | //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN |
| 49 | |
| 50 | #ifdef ENABLE_DEBUG_PRINTF |
| 51 | #include <stdio.h> |
| 52 | #define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) |
| 53 | #else |
| 54 | #define DEBUG_PRINTF(fmt, ...) |
| 55 | #endif |
| 56 | |
| 57 | using namespace lldb; |
| 58 | using namespace lldb_private; |
| 59 | DWARFASTParserClang::DWARFASTParserClang(ClangASTContext &ast) |
| 60 | : m_ast(ast), m_die_to_decl_ctx(), m_decl_ctx_to_die() {} |
| 61 | |
| 62 | DWARFASTParserClang::~DWARFASTParserClang() {} |
| 63 | |
| 64 | static AccessType DW_ACCESS_to_AccessType(uint32_t dwarf_accessibility) { |
| 65 | switch (dwarf_accessibility) { |
| 66 | case DW_ACCESS_public: |
| 67 | return eAccessPublic; |
| 68 | case DW_ACCESS_private: |
| 69 | return eAccessPrivate; |
| 70 | case DW_ACCESS_protected: |
| 71 | return eAccessProtected; |
| 72 | default: |
| 73 | break; |
| 74 | } |
| 75 | return eAccessNone; |
| 76 | } |
| 77 | |
| 78 | static bool DeclKindIsCXXClass(clang::Decl::Kind decl_kind) { |
| 79 | switch (decl_kind) { |
| 80 | case clang::Decl::CXXRecord: |
| 81 | case clang::Decl::ClassTemplateSpecialization: |
| 82 | return true; |
| 83 | default: |
| 84 | break; |
| 85 | } |
| 86 | return false; |
| 87 | } |
| 88 | |
| 89 | struct BitfieldInfo { |
| 90 | uint64_t bit_size; |
| 91 | uint64_t bit_offset; |
| 92 | |
| 93 | BitfieldInfo() |
| 94 | : bit_size(LLDB_INVALID_ADDRESS(18446744073709551615UL)), bit_offset(LLDB_INVALID_ADDRESS(18446744073709551615UL)) {} |
| 95 | |
| 96 | void Clear() { |
| 97 | bit_size = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 98 | bit_offset = LLDB_INVALID_ADDRESS(18446744073709551615UL); |
| 99 | } |
| 100 | |
| 101 | bool IsValid() const { |
| 102 | return (bit_size != LLDB_INVALID_ADDRESS(18446744073709551615UL)) && |
| 103 | (bit_offset != LLDB_INVALID_ADDRESS(18446744073709551615UL)); |
| 104 | } |
| 105 | |
| 106 | bool NextBitfieldOffsetIsValid(const uint64_t next_bit_offset) const { |
| 107 | if (IsValid()) { |
| 108 | // This bitfield info is valid, so any subsequent bitfields |
| 109 | // must not overlap and must be at a higher bit offset than |
| 110 | // any previous bitfield + size. |
| 111 | return (bit_size + bit_offset) <= next_bit_offset; |
| 112 | } else { |
| 113 | // If the this BitfieldInfo is not valid, then any offset isOK |
| 114 | return true; |
| 115 | } |
| 116 | } |
| 117 | }; |
| 118 | |
| 119 | ClangASTImporter &DWARFASTParserClang::GetClangASTImporter() { |
| 120 | if (!m_clang_ast_importer_ap) { |
| 121 | m_clang_ast_importer_ap.reset(new ClangASTImporter); |
| 122 | } |
| 123 | return *m_clang_ast_importer_ap; |
| 124 | } |
| 125 | |
| 126 | TypeSP DWARFASTParserClang::ParseTypeFromDWO(const DWARFDIE &die, Log *log) { |
| 127 | ModuleSP dwo_module_sp = die.GetContainingDWOModule(); |
| 128 | if (dwo_module_sp) { |
| 129 | // This type comes from an external DWO module |
| 130 | std::vector<CompilerContext> dwo_context; |
| 131 | die.GetDWOContext(dwo_context); |
| 132 | TypeMap dwo_types; |
| 133 | if (dwo_module_sp->GetSymbolVendor()->FindTypes(dwo_context, true, |
| 134 | dwo_types)) { |
| 135 | const size_t num_dwo_types = dwo_types.GetSize(); |
| 136 | if (num_dwo_types == 1) { |
| 137 | // We found a real definition for this type elsewhere |
| 138 | // so lets use it and cache the fact that we found |
| 139 | // a complete type for this die |
| 140 | TypeSP dwo_type_sp = dwo_types.GetTypeAtIndex(0); |
| 141 | if (dwo_type_sp) { |
| 142 | lldb_private::CompilerType dwo_type = |
| 143 | dwo_type_sp->GetForwardCompilerType(); |
| 144 | |
| 145 | lldb_private::CompilerType type = |
| 146 | GetClangASTImporter().CopyType(m_ast, dwo_type); |
| 147 | |
| 148 | // printf ("copied_qual_type: ast = %p, clang_type = %p, name = |
| 149 | // '%s'\n", m_ast, copied_qual_type.getAsOpaquePtr(), |
| 150 | // external_type->GetName().GetCString()); |
| 151 | if (type) { |
| 152 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 153 | TypeSP type_sp(new Type(die.GetID(), dwarf, dwo_type_sp->GetName(), |
| 154 | dwo_type_sp->GetByteSize(), NULL__null, |
| 155 | LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingInvalid, |
| 156 | &dwo_type_sp->GetDeclaration(), type, |
| 157 | Type::eResolveStateForward)); |
| 158 | |
| 159 | dwarf->GetTypeList()->Insert(type_sp); |
| 160 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
| 161 | clang::TagDecl *tag_decl = ClangASTContext::GetAsTagDecl(type); |
| 162 | if (tag_decl) |
| 163 | LinkDeclContextToDIE(tag_decl, die); |
| 164 | else { |
| 165 | clang::DeclContext *defn_decl_ctx = |
| 166 | GetCachedClangDeclContextForDIE(die); |
| 167 | if (defn_decl_ctx) |
| 168 | LinkDeclContextToDIE(defn_decl_ctx, die); |
| 169 | } |
| 170 | return type_sp; |
| 171 | } |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | return TypeSP(); |
| 177 | } |
| 178 | |
| 179 | TypeSP DWARFASTParserClang::ParseTypeFromDWARF(const SymbolContext &sc, |
| 180 | const DWARFDIE &die, Log *log, |
| 181 | bool *type_is_new_ptr) { |
| 182 | TypeSP type_sp; |
| 183 | |
| 184 | if (type_is_new_ptr) |
| 185 | *type_is_new_ptr = false; |
| 186 | |
| 187 | AccessType accessibility = eAccessNone; |
| 188 | if (die) { |
| 189 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 190 | if (log) { |
| 191 | DWARFDIE context_die; |
| 192 | clang::DeclContext *context = |
| 193 | GetClangDeclContextContainingDIE(die, &context_die); |
| 194 | |
| 195 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 196 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die " |
| 197 | "0x%8.8x)) %s name = '%s')", |
| 198 | die.GetOffset(), static_cast<void *>(context), |
| 199 | context_die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
| 200 | } |
| 201 | // |
| 202 | // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| 203 | // if (log && dwarf_cu) |
| 204 | // { |
| 205 | // StreamString s; |
| 206 | // die->DumpLocation (this, dwarf_cu, s); |
| 207 | // dwarf->GetObjectFile()->GetModule()->LogMessage (log, |
| 208 | // "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); |
| 209 | // |
| 210 | // } |
| 211 | |
| 212 | Type *type_ptr = dwarf->GetDIEToType().lookup(die.GetDIE()); |
| 213 | TypeList *type_list = dwarf->GetTypeList(); |
| 214 | if (type_ptr == NULL__null) { |
| 215 | if (type_is_new_ptr) |
| 216 | *type_is_new_ptr = true; |
| 217 | |
| 218 | const dw_tag_t tag = die.Tag(); |
| 219 | |
| 220 | bool is_forward_declaration = false; |
| 221 | DWARFAttributes attributes; |
| 222 | const char *type_name_cstr = NULL__null; |
| 223 | ConstString type_name_const_str; |
| 224 | Type::ResolveState resolve_state = Type::eResolveStateUnresolved; |
| 225 | uint64_t byte_size = 0; |
| 226 | Declaration decl; |
| 227 | |
| 228 | Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; |
| 229 | CompilerType clang_type; |
| 230 | DWARFFormValue form_value; |
| 231 | |
| 232 | dw_attr_t attr; |
| 233 | |
| 234 | switch (tag) { |
| 235 | case DW_TAG_typedef: |
| 236 | case DW_TAG_base_type: |
| 237 | case DW_TAG_pointer_type: |
| 238 | case DW_TAG_reference_type: |
| 239 | case DW_TAG_rvalue_reference_type: |
| 240 | case DW_TAG_const_type: |
| 241 | case DW_TAG_restrict_type: |
| 242 | case DW_TAG_volatile_type: |
| 243 | case DW_TAG_unspecified_type: { |
| 244 | // Set a bit that lets us know that we are currently parsing this |
| 245 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
| 246 | |
| 247 | const size_t num_attributes = die.GetAttributes(attributes); |
| 248 | uint32_t encoding = 0; |
| 249 | DWARFFormValue encoding_uid; |
| 250 | |
| 251 | if (num_attributes > 0) { |
| 252 | uint32_t i; |
| 253 | for (i = 0; i < num_attributes; ++i) { |
| 254 | attr = attributes.AttributeAtIndex(i); |
| 255 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 256 | switch (attr) { |
| 257 | case DW_AT_decl_file: |
| 258 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 259 | form_value.Unsigned())); |
| 260 | break; |
| 261 | case DW_AT_decl_line: |
| 262 | decl.SetLine(form_value.Unsigned()); |
| 263 | break; |
| 264 | case DW_AT_decl_column: |
| 265 | decl.SetColumn(form_value.Unsigned()); |
| 266 | break; |
| 267 | case DW_AT_name: |
| 268 | |
| 269 | type_name_cstr = form_value.AsCString(); |
| 270 | // Work around a bug in llvm-gcc where they give a name to a |
| 271 | // reference type which doesn't |
| 272 | // include the "&"... |
| 273 | if (tag == DW_TAG_reference_type) { |
| 274 | if (strchr(type_name_cstr, '&') == NULL__null) |
| 275 | type_name_cstr = NULL__null; |
| 276 | } |
| 277 | if (type_name_cstr) |
| 278 | type_name_const_str.SetCString(type_name_cstr); |
| 279 | break; |
| 280 | case DW_AT_byte_size: |
| 281 | byte_size = form_value.Unsigned(); |
| 282 | break; |
| 283 | case DW_AT_encoding: |
| 284 | encoding = form_value.Unsigned(); |
| 285 | break; |
| 286 | case DW_AT_type: |
| 287 | encoding_uid = form_value; |
| 288 | break; |
| 289 | default: |
| 290 | case DW_AT_sibling: |
| 291 | break; |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | if (tag == DW_TAG_typedef && encoding_uid.IsValid()) { |
| 298 | // Try to parse a typedef from the DWO file first as modules |
| 299 | // can contain typedef'ed structures that have no names like: |
| 300 | // |
| 301 | // typedef struct { int a; } Foo; |
| 302 | // |
| 303 | // In this case we will have a structure with no name and a |
| 304 | // typedef named "Foo" that points to this unnamed structure. |
| 305 | // The name in the typedef is the only identifier for the struct, |
| 306 | // so always try to get typedefs from DWO files if possible. |
| 307 | // |
| 308 | // The type_sp returned will be empty if the typedef doesn't exist |
| 309 | // in a DWO file, so it is cheap to call this function just to check. |
| 310 | // |
| 311 | // If we don't do this we end up creating a TypeSP that says this |
| 312 | // is a typedef to type 0x123 (the DW_AT_type value would be 0x123 |
| 313 | // in the DW_TAG_typedef), and this is the unnamed structure type. |
| 314 | // We will have a hard time tracking down an unnammed structure |
| 315 | // type in the module DWO file, so we make sure we don't get into |
| 316 | // this situation by always resolving typedefs from the DWO file. |
| 317 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
| 318 | |
| 319 | // First make sure that the die that this is typedef'ed to _is_ |
| 320 | // just a declaration (DW_AT_declaration == 1), not a full definition |
| 321 | // since template types can't be represented in modules since only |
| 322 | // concrete instances of templates are ever emitted and modules |
| 323 | // won't contain those |
| 324 | if (encoding_die && |
| 325 | encoding_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == |
| 326 | 1) { |
| 327 | type_sp = ParseTypeFromDWO(die, log); |
| 328 | if (type_sp) |
| 329 | return type_sp; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", |
| 334 | die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, |
| 335 | encoding_uid.Reference()); |
| 336 | |
| 337 | switch (tag) { |
| 338 | default: |
| 339 | break; |
| 340 | |
| 341 | case DW_TAG_unspecified_type: |
| 342 | if (strcmp(type_name_cstr, "nullptr_t") == 0 || |
| 343 | strcmp(type_name_cstr, "decltype(nullptr)") == 0) { |
| 344 | resolve_state = Type::eResolveStateFull; |
| 345 | clang_type = m_ast.GetBasicType(eBasicTypeNullPtr); |
| 346 | break; |
| 347 | } |
| 348 | // Fall through to base type below in case we can handle the type |
| 349 | // there... |
| 350 | LLVM_FALLTHROUGH[[clang::fallthrough]]; |
| 351 | |
| 352 | case DW_TAG_base_type: |
| 353 | resolve_state = Type::eResolveStateFull; |
| 354 | clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
| 355 | type_name_cstr, encoding, byte_size * 8); |
| 356 | break; |
| 357 | |
| 358 | case DW_TAG_pointer_type: |
| 359 | encoding_data_type = Type::eEncodingIsPointerUID; |
| 360 | break; |
| 361 | case DW_TAG_reference_type: |
| 362 | encoding_data_type = Type::eEncodingIsLValueReferenceUID; |
| 363 | break; |
| 364 | case DW_TAG_rvalue_reference_type: |
| 365 | encoding_data_type = Type::eEncodingIsRValueReferenceUID; |
| 366 | break; |
| 367 | case DW_TAG_typedef: |
| 368 | encoding_data_type = Type::eEncodingIsTypedefUID; |
| 369 | break; |
| 370 | case DW_TAG_const_type: |
| 371 | encoding_data_type = Type::eEncodingIsConstUID; |
| 372 | break; |
| 373 | case DW_TAG_restrict_type: |
| 374 | encoding_data_type = Type::eEncodingIsRestrictUID; |
| 375 | break; |
| 376 | case DW_TAG_volatile_type: |
| 377 | encoding_data_type = Type::eEncodingIsVolatileUID; |
| 378 | break; |
| 379 | } |
| 380 | |
| 381 | if (!clang_type && |
| 382 | (encoding_data_type == Type::eEncodingIsPointerUID || |
| 383 | encoding_data_type == Type::eEncodingIsTypedefUID) && |
| 384 | sc.comp_unit != NULL__null) { |
| 385 | if (tag == DW_TAG_pointer_type) { |
| 386 | DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type); |
| 387 | |
| 388 | if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0)) { |
| 389 | // Blocks have a __FuncPtr inside them which is a pointer to a |
| 390 | // function of the proper type. |
| 391 | |
| 392 | for (DWARFDIE child_die = target_die.GetFirstChild(); |
| 393 | child_die.IsValid(); child_die = child_die.GetSibling()) { |
| 394 | if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""), |
| 395 | "__FuncPtr")) { |
| 396 | DWARFDIE function_pointer_type = |
| 397 | child_die.GetReferencedDIE(DW_AT_type); |
| 398 | |
| 399 | if (function_pointer_type) { |
| 400 | DWARFDIE function_type = |
| 401 | function_pointer_type.GetReferencedDIE(DW_AT_type); |
| 402 | |
| 403 | bool function_type_is_new_pointer; |
| 404 | TypeSP lldb_function_type_sp = ParseTypeFromDWARF( |
| 405 | sc, function_type, log, &function_type_is_new_pointer); |
| 406 | |
| 407 | if (lldb_function_type_sp) { |
| 408 | clang_type = m_ast.CreateBlockPointerType( |
| 409 | lldb_function_type_sp->GetForwardCompilerType()); |
| 410 | encoding_data_type = Type::eEncodingIsUID; |
| 411 | encoding_uid.Clear(); |
| 412 | resolve_state = Type::eResolveStateFull; |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | break; |
| 417 | } |
| 418 | } |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | bool translation_unit_is_objc = |
| 423 | (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || |
| 424 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); |
| 425 | |
| 426 | if (translation_unit_is_objc) { |
| 427 | if (type_name_cstr != NULL__null) { |
| 428 | static ConstString g_objc_type_name_id("id"); |
| 429 | static ConstString g_objc_type_name_Class("Class"); |
| 430 | static ConstString g_objc_type_name_selector("SEL"); |
| 431 | |
| 432 | if (type_name_const_str == g_objc_type_name_id) { |
| 433 | if (log) |
| 434 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 435 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
| 436 | "is Objective C 'id' built-in type.", |
| 437 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
| 438 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
| 439 | encoding_data_type = Type::eEncodingIsUID; |
| 440 | encoding_uid.Clear(); |
| 441 | resolve_state = Type::eResolveStateFull; |
| 442 | |
| 443 | } else if (type_name_const_str == g_objc_type_name_Class) { |
| 444 | if (log) |
| 445 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 446 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
| 447 | "is Objective C 'Class' built-in type.", |
| 448 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
| 449 | clang_type = m_ast.GetBasicType(eBasicTypeObjCClass); |
| 450 | encoding_data_type = Type::eEncodingIsUID; |
| 451 | encoding_uid.Clear(); |
| 452 | resolve_state = Type::eResolveStateFull; |
| 453 | } else if (type_name_const_str == g_objc_type_name_selector) { |
| 454 | if (log) |
| 455 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 456 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' " |
| 457 | "is Objective C 'selector' built-in type.", |
| 458 | die.GetOffset(), die.GetTagAsCString(), die.GetName()); |
| 459 | clang_type = m_ast.GetBasicType(eBasicTypeObjCSel); |
| 460 | encoding_data_type = Type::eEncodingIsUID; |
| 461 | encoding_uid.Clear(); |
| 462 | resolve_state = Type::eResolveStateFull; |
| 463 | } |
| 464 | } else if (encoding_data_type == Type::eEncodingIsPointerUID && |
| 465 | encoding_uid.IsValid()) { |
| 466 | // Clang sometimes erroneously emits id as objc_object*. In that |
| 467 | // case we fix up the type to "id". |
| 468 | |
| 469 | const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid)); |
| 470 | |
| 471 | if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) { |
| 472 | if (const char *struct_name = encoding_die.GetName()) { |
| 473 | if (!strcmp(struct_name, "objc_object")) { |
| 474 | if (log) |
| 475 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 476 | log, "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s " |
| 477 | "'%s' is 'objc_object*', which we overrode to " |
| 478 | "'id'.", |
| 479 | die.GetOffset(), die.GetTagAsCString(), |
| 480 | die.GetName()); |
| 481 | clang_type = m_ast.GetBasicType(eBasicTypeObjCID); |
| 482 | encoding_data_type = Type::eEncodingIsUID; |
| 483 | encoding_uid.Clear(); |
| 484 | resolve_state = Type::eResolveStateFull; |
| 485 | } |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | type_sp.reset( |
| 493 | new Type(die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
| 494 | DIERef(encoding_uid).GetUID(dwarf), encoding_data_type, |
| 495 | &decl, clang_type, resolve_state)); |
| 496 | |
| 497 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
| 498 | |
| 499 | // Type* encoding_type = |
| 500 | // GetUniquedTypeForDIEOffset(encoding_uid, type_sp, |
| 501 | // NULL, 0, 0, false); |
| 502 | // if (encoding_type != NULL) |
| 503 | // { |
| 504 | // if (encoding_type != DIE_IS_BEING_PARSED) |
| 505 | // type_sp->SetEncodingType(encoding_type); |
| 506 | // else |
| 507 | // m_indirect_fixups.push_back(type_sp.get()); |
| 508 | // } |
| 509 | } break; |
| 510 | |
| 511 | case DW_TAG_structure_type: |
| 512 | case DW_TAG_union_type: |
| 513 | case DW_TAG_class_type: { |
| 514 | // Set a bit that lets us know that we are currently parsing this |
| 515 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
| 516 | bool byte_size_valid = false; |
| 517 | |
| 518 | LanguageType class_language = eLanguageTypeUnknown; |
| 519 | bool is_complete_objc_class = false; |
| 520 | // bool struct_is_class = false; |
| 521 | const size_t num_attributes = die.GetAttributes(attributes); |
| 522 | if (num_attributes > 0) { |
| 523 | uint32_t i; |
| 524 | for (i = 0; i < num_attributes; ++i) { |
| 525 | attr = attributes.AttributeAtIndex(i); |
| 526 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 527 | switch (attr) { |
| 528 | case DW_AT_decl_file: |
| 529 | if (die.GetCU()->DW_AT_decl_file_attributes_are_invalid()) { |
| 530 | // llvm-gcc outputs invalid DW_AT_decl_file attributes that |
| 531 | // always |
| 532 | // point to the compile unit file, so we clear this invalid |
| 533 | // value |
| 534 | // so that we can still unique types efficiently. |
| 535 | decl.SetFile(FileSpec("<invalid>", false)); |
| 536 | } else |
| 537 | decl.SetFile( |
| 538 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 539 | form_value.Unsigned())); |
| 540 | break; |
| 541 | |
| 542 | case DW_AT_decl_line: |
| 543 | decl.SetLine(form_value.Unsigned()); |
| 544 | break; |
| 545 | |
| 546 | case DW_AT_decl_column: |
| 547 | decl.SetColumn(form_value.Unsigned()); |
| 548 | break; |
| 549 | |
| 550 | case DW_AT_name: |
| 551 | type_name_cstr = form_value.AsCString(); |
| 552 | type_name_const_str.SetCString(type_name_cstr); |
| 553 | break; |
| 554 | |
| 555 | case DW_AT_byte_size: |
| 556 | byte_size = form_value.Unsigned(); |
| 557 | byte_size_valid = true; |
| 558 | break; |
| 559 | |
| 560 | case DW_AT_accessibility: |
| 561 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
| 562 | break; |
| 563 | |
| 564 | case DW_AT_declaration: |
| 565 | is_forward_declaration = form_value.Boolean(); |
| 566 | break; |
| 567 | |
| 568 | case DW_AT_APPLE_runtime_class: |
| 569 | class_language = (LanguageType)form_value.Signed(); |
| 570 | break; |
| 571 | |
| 572 | case DW_AT_APPLE_objc_complete_type: |
| 573 | is_complete_objc_class = form_value.Signed(); |
| 574 | break; |
| 575 | |
| 576 | case DW_AT_allocated: |
| 577 | case DW_AT_associated: |
| 578 | case DW_AT_data_location: |
| 579 | case DW_AT_description: |
| 580 | case DW_AT_start_scope: |
| 581 | case DW_AT_visibility: |
| 582 | default: |
| 583 | case DW_AT_sibling: |
| 584 | break; |
| 585 | } |
| 586 | } |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | // UniqueDWARFASTType is large, so don't create a local variables on the |
| 591 | // stack, put it on the heap. This function is often called recursively |
| 592 | // and clang isn't good and sharing the stack space for variables in |
| 593 | // different blocks. |
| 594 | std::unique_ptr<UniqueDWARFASTType> unique_ast_entry_ap( |
| 595 | new UniqueDWARFASTType()); |
| 596 | |
| 597 | ConstString unique_typename(type_name_const_str); |
| 598 | Declaration unique_decl(decl); |
| 599 | |
| 600 | if (type_name_const_str) { |
| 601 | LanguageType die_language = die.GetLanguage(); |
| 602 | if (Language::LanguageIsCPlusPlus(die_language)) { |
| 603 | // For C++, we rely solely upon the one definition rule that says |
| 604 | // only |
| 605 | // one thing can exist at a given decl context. We ignore the file |
| 606 | // and |
| 607 | // line that things are declared on. |
| 608 | std::string qualified_name; |
| 609 | if (die.GetQualifiedName(qualified_name)) |
| 610 | unique_typename = ConstString(qualified_name); |
| 611 | unique_decl.Clear(); |
| 612 | } |
| 613 | |
| 614 | if (dwarf->GetUniqueDWARFASTTypeMap().Find( |
| 615 | unique_typename, die, unique_decl, |
| 616 | byte_size_valid ? byte_size : -1, *unique_ast_entry_ap)) { |
| 617 | type_sp = unique_ast_entry_ap->m_type_sp; |
| 618 | if (type_sp) { |
| 619 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
| 620 | return type_sp; |
| 621 | } |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
| 626 | DW_TAG_value_to_name(tag), type_name_cstr); |
| 627 | |
| 628 | int tag_decl_kind = -1; |
| 629 | AccessType default_accessibility = eAccessNone; |
| 630 | if (tag == DW_TAG_structure_type) { |
| 631 | tag_decl_kind = clang::TTK_Struct; |
| 632 | default_accessibility = eAccessPublic; |
| 633 | } else if (tag == DW_TAG_union_type) { |
| 634 | tag_decl_kind = clang::TTK_Union; |
| 635 | default_accessibility = eAccessPublic; |
| 636 | } else if (tag == DW_TAG_class_type) { |
| 637 | tag_decl_kind = clang::TTK_Class; |
| 638 | default_accessibility = eAccessPrivate; |
| 639 | } |
| 640 | |
| 641 | if (byte_size_valid && byte_size == 0 && type_name_cstr && |
| 642 | die.HasChildren() == false && |
| 643 | sc.comp_unit->GetLanguage() == eLanguageTypeObjC) { |
| 644 | // Work around an issue with clang at the moment where |
| 645 | // forward declarations for objective C classes are emitted |
| 646 | // as: |
| 647 | // DW_TAG_structure_type [2] |
| 648 | // DW_AT_name( "ForwardObjcClass" ) |
| 649 | // DW_AT_byte_size( 0x00 ) |
| 650 | // DW_AT_decl_file( "..." ) |
| 651 | // DW_AT_decl_line( 1 ) |
| 652 | // |
| 653 | // Note that there is no DW_AT_declaration and there are |
| 654 | // no children, and the byte size is zero. |
| 655 | is_forward_declaration = true; |
| 656 | } |
| 657 | |
| 658 | if (class_language == eLanguageTypeObjC || |
| 659 | class_language == eLanguageTypeObjC_plus_plus) { |
| 660 | if (!is_complete_objc_class && |
| 661 | die.Supports_DW_AT_APPLE_objc_complete_type()) { |
| 662 | // We have a valid eSymbolTypeObjCClass class symbol whose |
| 663 | // name matches the current objective C class that we |
| 664 | // are trying to find and this DIE isn't the complete |
| 665 | // definition (we checked is_complete_objc_class above and |
| 666 | // know it is false), so the real definition is in here somewhere |
| 667 | type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE( |
| 668 | die, type_name_const_str, true); |
| 669 | |
| 670 | if (!type_sp) { |
| 671 | SymbolFileDWARFDebugMap *debug_map_symfile = |
| 672 | dwarf->GetDebugMapSymfile(); |
| 673 | if (debug_map_symfile) { |
| 674 | // We weren't able to find a full declaration in |
| 675 | // this DWARF, see if we have a declaration anywhere |
| 676 | // else... |
| 677 | type_sp = |
| 678 | debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE( |
| 679 | die, type_name_const_str, true); |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | if (type_sp) { |
| 684 | if (log) { |
| 685 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 686 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an " |
| 687 | "incomplete objc type, complete type is 0x%8.8" PRIx64"l" "x", |
| 688 | static_cast<void *>(this), die.GetOffset(), |
| 689 | DW_TAG_value_to_name(tag), type_name_cstr, |
| 690 | type_sp->GetID()); |
| 691 | } |
| 692 | |
| 693 | // We found a real definition for this type elsewhere |
| 694 | // so lets use it and cache the fact that we found |
| 695 | // a complete type for this die |
| 696 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
| 697 | return type_sp; |
| 698 | } |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | if (is_forward_declaration) { |
| 703 | // We have a forward declaration to a type and we need |
| 704 | // to try and find a full declaration. We look in the |
| 705 | // current type index just in case we have a forward |
| 706 | // declaration followed by an actual declarations in the |
| 707 | // DWARF. If this fails, we need to look elsewhere... |
| 708 | if (log) { |
| 709 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 710 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
| 711 | "forward declaration, trying to find complete type", |
| 712 | static_cast<void *>(this), die.GetOffset(), |
| 713 | DW_TAG_value_to_name(tag), type_name_cstr); |
| 714 | } |
| 715 | |
| 716 | // See if the type comes from a DWO module and if so, track down that |
| 717 | // type. |
| 718 | type_sp = ParseTypeFromDWO(die, log); |
| 719 | if (type_sp) |
| 720 | return type_sp; |
| 721 | |
| 722 | DWARFDeclContext die_decl_ctx; |
| 723 | die.GetDWARFDeclContext(die_decl_ctx); |
| 724 | |
| 725 | // type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, |
| 726 | // type_name_const_str); |
| 727 | type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
| 728 | |
| 729 | if (!type_sp) { |
| 730 | SymbolFileDWARFDebugMap *debug_map_symfile = |
| 731 | dwarf->GetDebugMapSymfile(); |
| 732 | if (debug_map_symfile) { |
| 733 | // We weren't able to find a full declaration in |
| 734 | // this DWARF, see if we have a declaration anywhere |
| 735 | // else... |
| 736 | type_sp = |
| 737 | debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( |
| 738 | die_decl_ctx); |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | if (type_sp) { |
| 743 | if (log) { |
| 744 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 745 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
| 746 | "forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
| 747 | static_cast<void *>(this), die.GetOffset(), |
| 748 | DW_TAG_value_to_name(tag), type_name_cstr, type_sp->GetID()); |
| 749 | } |
| 750 | |
| 751 | // We found a real definition for this type elsewhere |
| 752 | // so lets use it and cache the fact that we found |
| 753 | // a complete type for this die |
| 754 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
| 755 | clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE( |
| 756 | dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf))); |
| 757 | if (defn_decl_ctx) |
| 758 | LinkDeclContextToDIE(defn_decl_ctx, die); |
| 759 | return type_sp; |
| 760 | } |
| 761 | } |
| 762 | assert(tag_decl_kind != -1)((tag_decl_kind != -1) ? static_cast<void> (0) : __assert_fail ("tag_decl_kind != -1", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 762, __PRETTY_FUNCTION__)); |
| 763 | bool clang_type_was_created = false; |
| 764 | clang_type.SetCompilerType( |
| 765 | &m_ast, dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
| 766 | if (!clang_type) { |
| 767 | clang::DeclContext *decl_ctx = |
| 768 | GetClangDeclContextContainingDIE(die, nullptr); |
| 769 | if (accessibility == eAccessNone && decl_ctx) { |
| 770 | // Check the decl context that contains this class/struct/union. |
| 771 | // If it is a class we must give it an accessibility. |
| 772 | const clang::Decl::Kind containing_decl_kind = |
| 773 | decl_ctx->getDeclKind(); |
| 774 | if (DeclKindIsCXXClass(containing_decl_kind)) |
| 775 | accessibility = default_accessibility; |
| 776 | } |
| 777 | |
| 778 | ClangASTMetadata metadata; |
| 779 | metadata.SetUserID(die.GetID()); |
| 780 | metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual(die)); |
| 781 | |
| 782 | if (type_name_cstr && strchr(type_name_cstr, '<')) { |
| 783 | ClangASTContext::TemplateParameterInfos template_param_infos; |
| 784 | if (ParseTemplateParameterInfos(die, template_param_infos)) { |
| 785 | clang::ClassTemplateDecl *class_template_decl = |
| 786 | m_ast.ParseClassTemplateDecl(decl_ctx, accessibility, |
| 787 | type_name_cstr, tag_decl_kind, |
| 788 | template_param_infos); |
| 789 | |
| 790 | clang::ClassTemplateSpecializationDecl |
| 791 | *class_specialization_decl = |
| 792 | m_ast.CreateClassTemplateSpecializationDecl( |
| 793 | decl_ctx, class_template_decl, tag_decl_kind, |
| 794 | template_param_infos); |
| 795 | clang_type = m_ast.CreateClassTemplateSpecializationType( |
| 796 | class_specialization_decl); |
| 797 | clang_type_was_created = true; |
| 798 | |
| 799 | m_ast.SetMetadata(class_template_decl, metadata); |
| 800 | m_ast.SetMetadata(class_specialization_decl, metadata); |
| 801 | } |
| 802 | } |
| 803 | |
| 804 | if (!clang_type_was_created) { |
| 805 | clang_type_was_created = true; |
| 806 | clang_type = m_ast.CreateRecordType(decl_ctx, accessibility, |
| 807 | type_name_cstr, tag_decl_kind, |
| 808 | class_language, &metadata); |
| 809 | } |
| 810 | } |
| 811 | |
| 812 | // Store a forward declaration to this class type in case any |
| 813 | // parameters in any class methods need it for the clang |
| 814 | // types for function prototypes. |
| 815 | LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die); |
| 816 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
| 817 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
| 818 | Type::eEncodingIsUID, &decl, clang_type, |
| 819 | Type::eResolveStateForward)); |
| 820 | |
| 821 | type_sp->SetIsCompleteObjCClass(is_complete_objc_class); |
| 822 | |
| 823 | // Add our type to the unique type map so we don't |
| 824 | // end up creating many copies of the same type over |
| 825 | // and over in the ASTContext for our module |
| 826 | unique_ast_entry_ap->m_type_sp = type_sp; |
| 827 | unique_ast_entry_ap->m_die = die; |
| 828 | unique_ast_entry_ap->m_declaration = unique_decl; |
| 829 | unique_ast_entry_ap->m_byte_size = byte_size; |
| 830 | dwarf->GetUniqueDWARFASTTypeMap().Insert(unique_typename, |
| 831 | *unique_ast_entry_ap); |
| 832 | |
| 833 | if (is_forward_declaration && die.HasChildren()) { |
| 834 | // Check to see if the DIE actually has a definition, some version of |
| 835 | // GCC will |
| 836 | // emit DIEs with DW_AT_declaration set to true, but yet still have |
| 837 | // subprogram, |
| 838 | // members, or inheritance, so we can't trust it |
| 839 | DWARFDIE child_die = die.GetFirstChild(); |
| 840 | while (child_die) { |
| 841 | switch (child_die.Tag()) { |
| 842 | case DW_TAG_inheritance: |
| 843 | case DW_TAG_subprogram: |
| 844 | case DW_TAG_member: |
| 845 | case DW_TAG_APPLE_property: |
| 846 | case DW_TAG_class_type: |
| 847 | case DW_TAG_structure_type: |
| 848 | case DW_TAG_enumeration_type: |
| 849 | case DW_TAG_typedef: |
| 850 | case DW_TAG_union_type: |
| 851 | child_die.Clear(); |
| 852 | is_forward_declaration = false; |
| 853 | break; |
| 854 | default: |
| 855 | child_die = child_die.GetSibling(); |
| 856 | break; |
| 857 | } |
| 858 | } |
| 859 | } |
| 860 | |
| 861 | if (!is_forward_declaration) { |
| 862 | // Always start the definition for a class type so that |
| 863 | // if the class has child classes or types that require |
| 864 | // the class to be created for use as their decl contexts |
| 865 | // the class will be ready to accept these child definitions. |
| 866 | if (die.HasChildren() == false) { |
| 867 | // No children for this struct/union/class, lets finish it |
| 868 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
| 869 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
| 870 | } else { |
| 871 | dwarf->GetObjectFile()->GetModule()->ReportError( |
| 872 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
| 873 | "definition.\nPlease file a bug and attach the file at the " |
| 874 | "start of this error message", |
| 875 | die.GetOffset(), type_name_cstr); |
| 876 | } |
| 877 | |
| 878 | if (tag == DW_TAG_structure_type) // this only applies in C |
| 879 | { |
| 880 | clang::RecordDecl *record_decl = |
| 881 | ClangASTContext::GetAsRecordDecl(clang_type); |
| 882 | |
| 883 | if (record_decl) { |
| 884 | GetClangASTImporter().InsertRecordDecl( |
| 885 | record_decl, ClangASTImporter::LayoutInfo()); |
| 886 | } |
| 887 | } |
| 888 | } else if (clang_type_was_created) { |
| 889 | // Start the definition if the class is not objective C since |
| 890 | // the underlying decls respond to isCompleteDefinition(). Objective |
| 891 | // C decls don't respond to isCompleteDefinition() so we can't |
| 892 | // start the declaration definition right away. For C++ |
| 893 | // class/union/structs |
| 894 | // we want to start the definition in case the class is needed as |
| 895 | // the |
| 896 | // declaration context for a contained class or type without the |
| 897 | // need |
| 898 | // to complete that type.. |
| 899 | |
| 900 | if (class_language != eLanguageTypeObjC && |
| 901 | class_language != eLanguageTypeObjC_plus_plus) |
| 902 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
| 903 | |
| 904 | // Leave this as a forward declaration until we need |
| 905 | // to know the details of the type. lldb_private::Type |
| 906 | // will automatically call the SymbolFile virtual function |
| 907 | // "SymbolFileDWARF::CompleteType(Type *)" |
| 908 | // When the definition needs to be defined. |
| 909 | assert(!dwarf->GetForwardDeclClangTypeToDie().count(((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 912, __PRETTY_FUNCTION__)) |
| 910 | ClangUtil::RemoveFastQualifiers(clang_type)((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 912, __PRETTY_FUNCTION__)) |
| 911 | .GetOpaqueQualType()) &&((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 912, __PRETTY_FUNCTION__)) |
| 912 | "Type already in the forward declaration map!")((!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil:: RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && "Type already in the forward declaration map!") ? static_cast <void> (0) : __assert_fail ("!dwarf->GetForwardDeclClangTypeToDie().count( ClangUtil::RemoveFastQualifiers(clang_type) .GetOpaqueQualType()) && \"Type already in the forward declaration map!\"" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 912, __PRETTY_FUNCTION__)); |
| 913 | // Can't assume m_ast.GetSymbolFile() is actually a SymbolFileDWARF, |
| 914 | // it can be a |
| 915 | // SymbolFileDWARFDebugMap for Apple binaries. |
| 916 | dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] = |
| 917 | clang_type.GetOpaqueQualType(); |
| 918 | dwarf->GetForwardDeclClangTypeToDie() |
| 919 | [ClangUtil::RemoveFastQualifiers(clang_type) |
| 920 | .GetOpaqueQualType()] = die.GetDIERef(); |
| 921 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), true); |
| 922 | } |
| 923 | } |
| 924 | } break; |
| 925 | |
| 926 | case DW_TAG_enumeration_type: { |
| 927 | // Set a bit that lets us know that we are currently parsing this |
| 928 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
| 929 | |
| 930 | DWARFFormValue encoding_form; |
| 931 | |
| 932 | const size_t num_attributes = die.GetAttributes(attributes); |
| 933 | if (num_attributes > 0) { |
| 934 | uint32_t i; |
| 935 | |
| 936 | for (i = 0; i < num_attributes; ++i) { |
| 937 | attr = attributes.AttributeAtIndex(i); |
| 938 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 939 | switch (attr) { |
| 940 | case DW_AT_decl_file: |
| 941 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 942 | form_value.Unsigned())); |
| 943 | break; |
| 944 | case DW_AT_decl_line: |
| 945 | decl.SetLine(form_value.Unsigned()); |
| 946 | break; |
| 947 | case DW_AT_decl_column: |
| 948 | decl.SetColumn(form_value.Unsigned()); |
| 949 | break; |
| 950 | case DW_AT_name: |
| 951 | type_name_cstr = form_value.AsCString(); |
| 952 | type_name_const_str.SetCString(type_name_cstr); |
| 953 | break; |
| 954 | case DW_AT_type: |
| 955 | encoding_form = form_value; |
| 956 | break; |
| 957 | case DW_AT_byte_size: |
| 958 | byte_size = form_value.Unsigned(); |
| 959 | break; |
| 960 | case DW_AT_accessibility: |
| 961 | break; // accessibility = |
| 962 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
| 963 | case DW_AT_declaration: |
| 964 | is_forward_declaration = form_value.Boolean(); |
| 965 | break; |
| 966 | case DW_AT_allocated: |
| 967 | case DW_AT_associated: |
| 968 | case DW_AT_bit_stride: |
| 969 | case DW_AT_byte_stride: |
| 970 | case DW_AT_data_location: |
| 971 | case DW_AT_description: |
| 972 | case DW_AT_start_scope: |
| 973 | case DW_AT_visibility: |
| 974 | case DW_AT_specification: |
| 975 | case DW_AT_abstract_origin: |
| 976 | case DW_AT_sibling: |
| 977 | break; |
| 978 | } |
| 979 | } |
| 980 | } |
| 981 | |
| 982 | if (is_forward_declaration) { |
| 983 | type_sp = ParseTypeFromDWO(die, log); |
| 984 | if (type_sp) |
| 985 | return type_sp; |
| 986 | |
| 987 | DWARFDeclContext die_decl_ctx; |
| 988 | die.GetDWARFDeclContext(die_decl_ctx); |
| 989 | |
| 990 | type_sp = |
| 991 | dwarf->FindDefinitionTypeForDWARFDeclContext(die_decl_ctx); |
| 992 | |
| 993 | if (!type_sp) { |
| 994 | SymbolFileDWARFDebugMap *debug_map_symfile = |
| 995 | dwarf->GetDebugMapSymfile(); |
| 996 | if (debug_map_symfile) { |
| 997 | // We weren't able to find a full declaration in |
| 998 | // this DWARF, see if we have a declaration anywhere |
| 999 | // else... |
| 1000 | type_sp = |
| 1001 | debug_map_symfile->FindDefinitionTypeForDWARFDeclContext( |
| 1002 | die_decl_ctx); |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | if (type_sp) { |
| 1007 | if (log) { |
| 1008 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 1009 | log, "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a " |
| 1010 | "forward declaration, complete type is 0x%8.8" PRIx64"l" "x", |
| 1011 | static_cast<void *>(this), die.GetOffset(), |
| 1012 | DW_TAG_value_to_name(tag), type_name_cstr, |
| 1013 | type_sp->GetID()); |
| 1014 | } |
| 1015 | |
| 1016 | // We found a real definition for this type elsewhere |
| 1017 | // so lets use it and cache the fact that we found |
| 1018 | // a complete type for this die |
| 1019 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
| 1020 | clang::DeclContext *defn_decl_ctx = |
| 1021 | GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE( |
| 1022 | DIERef(type_sp->GetID(), dwarf))); |
| 1023 | if (defn_decl_ctx) |
| 1024 | LinkDeclContextToDIE(defn_decl_ctx, die); |
| 1025 | return type_sp; |
| 1026 | } |
| 1027 | } |
| 1028 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
| 1029 | DW_TAG_value_to_name(tag), type_name_cstr); |
| 1030 | |
| 1031 | CompilerType enumerator_clang_type; |
| 1032 | clang_type.SetCompilerType( |
| 1033 | &m_ast, |
| 1034 | dwarf->GetForwardDeclDieToClangType().lookup(die.GetDIE())); |
| 1035 | if (!clang_type) { |
| 1036 | if (encoding_form.IsValid()) { |
| 1037 | Type *enumerator_type = |
| 1038 | dwarf->ResolveTypeUID(DIERef(encoding_form)); |
| 1039 | if (enumerator_type) |
| 1040 | enumerator_clang_type = enumerator_type->GetFullCompilerType(); |
| 1041 | } |
| 1042 | |
| 1043 | if (!enumerator_clang_type) { |
| 1044 | if (byte_size > 0) { |
| 1045 | enumerator_clang_type = |
| 1046 | m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize( |
| 1047 | NULL__null, DW_ATE_signed, byte_size * 8); |
| 1048 | } else { |
| 1049 | enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt); |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | clang_type = m_ast.CreateEnumerationType( |
| 1054 | type_name_cstr, GetClangDeclContextContainingDIE(die, nullptr), |
| 1055 | decl, enumerator_clang_type); |
| 1056 | } else { |
| 1057 | enumerator_clang_type = |
| 1058 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()); |
| 1059 | } |
| 1060 | |
| 1061 | LinkDeclContextToDIE( |
| 1062 | ClangASTContext::GetDeclContextForType(clang_type), die); |
| 1063 | |
| 1064 | type_sp.reset(new Type( |
| 1065 | die.GetID(), dwarf, type_name_const_str, byte_size, NULL__null, |
| 1066 | DIERef(encoding_form).GetUID(dwarf), Type::eEncodingIsUID, &decl, |
| 1067 | clang_type, Type::eResolveStateForward)); |
| 1068 | |
| 1069 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
| 1070 | if (die.HasChildren()) { |
| 1071 | SymbolContext cu_sc(die.GetLLDBCompileUnit()); |
| 1072 | bool is_signed = false; |
| 1073 | enumerator_clang_type.IsIntegerType(is_signed); |
| 1074 | ParseChildEnumerators(cu_sc, clang_type, is_signed, |
| 1075 | type_sp->GetByteSize(), die); |
| 1076 | } |
| 1077 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
| 1078 | } else { |
| 1079 | dwarf->GetObjectFile()->GetModule()->ReportError( |
| 1080 | "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its " |
| 1081 | "definition.\nPlease file a bug and attach the file at the " |
| 1082 | "start of this error message", |
| 1083 | die.GetOffset(), type_name_cstr); |
| 1084 | } |
| 1085 | } |
| 1086 | } break; |
| 1087 | |
| 1088 | case DW_TAG_inlined_subroutine: |
| 1089 | case DW_TAG_subprogram: |
| 1090 | case DW_TAG_subroutine_type: { |
| 1091 | // Set a bit that lets us know that we are currently parsing this |
| 1092 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
| 1093 | |
| 1094 | DWARFFormValue type_die_form; |
| 1095 | bool is_variadic = false; |
| 1096 | bool is_inline = false; |
| 1097 | bool is_static = false; |
| 1098 | bool is_virtual = false; |
| 1099 | bool is_explicit = false; |
| 1100 | bool is_artificial = false; |
| 1101 | bool has_template_params = false; |
| 1102 | DWARFFormValue specification_die_form; |
| 1103 | DWARFFormValue abstract_origin_die_form; |
| 1104 | dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET(~(dw_offset_t)0); |
| 1105 | |
| 1106 | unsigned type_quals = 0; |
| 1107 | clang::StorageClass storage = |
| 1108 | clang::SC_None; //, Extern, Static, PrivateExtern |
| 1109 | |
| 1110 | const size_t num_attributes = die.GetAttributes(attributes); |
| 1111 | if (num_attributes > 0) { |
| 1112 | uint32_t i; |
| 1113 | for (i = 0; i < num_attributes; ++i) { |
| 1114 | attr = attributes.AttributeAtIndex(i); |
| 1115 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 1116 | switch (attr) { |
| 1117 | case DW_AT_decl_file: |
| 1118 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 1119 | form_value.Unsigned())); |
| 1120 | break; |
| 1121 | case DW_AT_decl_line: |
| 1122 | decl.SetLine(form_value.Unsigned()); |
| 1123 | break; |
| 1124 | case DW_AT_decl_column: |
| 1125 | decl.SetColumn(form_value.Unsigned()); |
| 1126 | break; |
| 1127 | case DW_AT_name: |
| 1128 | type_name_cstr = form_value.AsCString(); |
| 1129 | type_name_const_str.SetCString(type_name_cstr); |
| 1130 | break; |
| 1131 | |
| 1132 | case DW_AT_linkage_name: |
| 1133 | case DW_AT_MIPS_linkage_name: |
| 1134 | break; // mangled = |
| 1135 | // form_value.AsCString(&dwarf->get_debug_str_data()); |
| 1136 | // break; |
| 1137 | case DW_AT_type: |
| 1138 | type_die_form = form_value; |
| 1139 | break; |
| 1140 | case DW_AT_accessibility: |
| 1141 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
| 1142 | break; |
| 1143 | case DW_AT_declaration: |
| 1144 | break; // is_forward_declaration = form_value.Boolean(); break; |
| 1145 | case DW_AT_inline: |
| 1146 | is_inline = form_value.Boolean(); |
| 1147 | break; |
| 1148 | case DW_AT_virtuality: |
| 1149 | is_virtual = form_value.Boolean(); |
| 1150 | break; |
| 1151 | case DW_AT_explicit: |
| 1152 | is_explicit = form_value.Boolean(); |
| 1153 | break; |
| 1154 | case DW_AT_artificial: |
| 1155 | is_artificial = form_value.Boolean(); |
| 1156 | break; |
| 1157 | |
| 1158 | case DW_AT_external: |
| 1159 | if (form_value.Unsigned()) { |
| 1160 | if (storage == clang::SC_None) |
| 1161 | storage = clang::SC_Extern; |
| 1162 | else |
| 1163 | storage = clang::SC_PrivateExtern; |
| 1164 | } |
| 1165 | break; |
| 1166 | |
| 1167 | case DW_AT_specification: |
| 1168 | specification_die_form = form_value; |
| 1169 | break; |
| 1170 | |
| 1171 | case DW_AT_abstract_origin: |
| 1172 | abstract_origin_die_form = form_value; |
| 1173 | break; |
| 1174 | |
| 1175 | case DW_AT_object_pointer: |
| 1176 | object_pointer_die_offset = form_value.Reference(); |
| 1177 | break; |
| 1178 | |
| 1179 | case DW_AT_allocated: |
| 1180 | case DW_AT_associated: |
| 1181 | case DW_AT_address_class: |
| 1182 | case DW_AT_calling_convention: |
| 1183 | case DW_AT_data_location: |
| 1184 | case DW_AT_elemental: |
| 1185 | case DW_AT_entry_pc: |
| 1186 | case DW_AT_frame_base: |
| 1187 | case DW_AT_high_pc: |
| 1188 | case DW_AT_low_pc: |
| 1189 | case DW_AT_prototyped: |
| 1190 | case DW_AT_pure: |
| 1191 | case DW_AT_ranges: |
| 1192 | case DW_AT_recursive: |
| 1193 | case DW_AT_return_addr: |
| 1194 | case DW_AT_segment: |
| 1195 | case DW_AT_start_scope: |
| 1196 | case DW_AT_static_link: |
| 1197 | case DW_AT_trampoline: |
| 1198 | case DW_AT_visibility: |
| 1199 | case DW_AT_vtable_elem_location: |
| 1200 | case DW_AT_description: |
| 1201 | case DW_AT_sibling: |
| 1202 | break; |
| 1203 | } |
| 1204 | } |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | std::string object_pointer_name; |
| 1209 | if (object_pointer_die_offset != DW_INVALID_OFFSET(~(dw_offset_t)0)) { |
| 1210 | DWARFDIE object_pointer_die = die.GetDIE(object_pointer_die_offset); |
| 1211 | if (object_pointer_die) { |
| 1212 | const char *object_pointer_name_cstr = object_pointer_die.GetName(); |
| 1213 | if (object_pointer_name_cstr) |
| 1214 | object_pointer_name = object_pointer_name_cstr; |
| 1215 | } |
| 1216 | } |
| 1217 | |
| 1218 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
| 1219 | DW_TAG_value_to_name(tag), type_name_cstr); |
| 1220 | |
| 1221 | CompilerType return_clang_type; |
| 1222 | Type *func_type = NULL__null; |
| 1223 | |
| 1224 | if (type_die_form.IsValid()) |
| 1225 | func_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
| 1226 | |
| 1227 | if (func_type) |
| 1228 | return_clang_type = func_type->GetForwardCompilerType(); |
| 1229 | else |
| 1230 | return_clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
| 1231 | |
| 1232 | std::vector<CompilerType> function_param_types; |
| 1233 | std::vector<clang::ParmVarDecl *> function_param_decls; |
| 1234 | |
| 1235 | // Parse the function children for the parameters |
| 1236 | |
| 1237 | DWARFDIE decl_ctx_die; |
| 1238 | clang::DeclContext *containing_decl_ctx = |
| 1239 | GetClangDeclContextContainingDIE(die, &decl_ctx_die); |
| 1240 | const clang::Decl::Kind containing_decl_kind = |
| 1241 | containing_decl_ctx->getDeclKind(); |
| 1242 | |
| 1243 | bool is_cxx_method = DeclKindIsCXXClass(containing_decl_kind); |
| 1244 | // Start off static. This will be set to false in |
| 1245 | // ParseChildParameters(...) |
| 1246 | // if we find a "this" parameters as the first parameter |
| 1247 | if (is_cxx_method) { |
| 1248 | is_static = true; |
| 1249 | } |
| 1250 | |
| 1251 | if (die.HasChildren()) { |
| 1252 | bool skip_artificial = true; |
| 1253 | ParseChildParameters(sc, containing_decl_ctx, die, skip_artificial, |
| 1254 | is_static, is_variadic, has_template_params, |
| 1255 | function_param_types, function_param_decls, |
| 1256 | type_quals); |
| 1257 | } |
| 1258 | |
| 1259 | bool ignore_containing_context = false; |
| 1260 | // Check for templatized class member functions. If we had any |
| 1261 | // DW_TAG_template_type_parameter |
| 1262 | // or DW_TAG_template_value_parameter the DW_TAG_subprogram DIE, then we |
| 1263 | // can't let this become |
| 1264 | // a method in a class. Why? Because templatized functions are only |
| 1265 | // emitted if one of the |
| 1266 | // templatized methods is used in the current compile unit and we will |
| 1267 | // end up with classes |
| 1268 | // that may or may not include these member functions and this means one |
| 1269 | // class won't match another |
| 1270 | // class definition and it affects our ability to use a class in the |
| 1271 | // clang expression parser. So |
| 1272 | // for the greater good, we currently must not allow any template member |
| 1273 | // functions in a class definition. |
| 1274 | if (is_cxx_method && has_template_params) { |
| 1275 | ignore_containing_context = true; |
| 1276 | is_cxx_method = false; |
| 1277 | } |
| 1278 | |
| 1279 | // clang_type will get the function prototype clang type after this call |
| 1280 | clang_type = m_ast.CreateFunctionType( |
| 1281 | return_clang_type, function_param_types.data(), |
| 1282 | function_param_types.size(), is_variadic, type_quals); |
| 1283 | |
| 1284 | if (type_name_cstr) { |
| 1285 | bool type_handled = false; |
| 1286 | if (tag == DW_TAG_subprogram || tag == DW_TAG_inlined_subroutine) { |
| 1287 | ObjCLanguage::MethodName objc_method(type_name_cstr, true); |
| 1288 | if (objc_method.IsValid(true)) { |
| 1289 | CompilerType class_opaque_type; |
| 1290 | ConstString class_name(objc_method.GetClassName()); |
| 1291 | if (class_name) { |
| 1292 | TypeSP complete_objc_class_type_sp( |
| 1293 | dwarf->FindCompleteObjCDefinitionTypeForDIE( |
| 1294 | DWARFDIE(), class_name, false)); |
| 1295 | |
| 1296 | if (complete_objc_class_type_sp) { |
| 1297 | CompilerType type_clang_forward_type = |
| 1298 | complete_objc_class_type_sp->GetForwardCompilerType(); |
| 1299 | if (ClangASTContext::IsObjCObjectOrInterfaceType( |
| 1300 | type_clang_forward_type)) |
| 1301 | class_opaque_type = type_clang_forward_type; |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | if (class_opaque_type) { |
| 1306 | // If accessibility isn't set to anything valid, assume public |
| 1307 | // for |
| 1308 | // now... |
| 1309 | if (accessibility == eAccessNone) |
| 1310 | accessibility = eAccessPublic; |
| 1311 | |
| 1312 | clang::ObjCMethodDecl *objc_method_decl = |
| 1313 | m_ast.AddMethodToObjCObjectType( |
| 1314 | class_opaque_type, type_name_cstr, clang_type, |
| 1315 | accessibility, is_artificial, is_variadic); |
| 1316 | type_handled = objc_method_decl != NULL__null; |
| 1317 | if (type_handled) { |
| 1318 | LinkDeclContextToDIE( |
| 1319 | ClangASTContext::GetAsDeclContext(objc_method_decl), die); |
| 1320 | m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID()); |
| 1321 | } else { |
| 1322 | dwarf->GetObjectFile()->GetModule()->ReportError( |
| 1323 | "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), " |
| 1324 | "please file a bug and attach the file at the start of " |
| 1325 | "this error message", |
| 1326 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
| 1327 | } |
| 1328 | } |
| 1329 | } else if (is_cxx_method) { |
| 1330 | // Look at the parent of this DIE and see if is is |
| 1331 | // a class or struct and see if this is actually a |
| 1332 | // C++ method |
| 1333 | Type *class_type = dwarf->ResolveType(decl_ctx_die); |
| 1334 | if (class_type) { |
| 1335 | bool alternate_defn = false; |
| 1336 | if (class_type->GetID() != decl_ctx_die.GetID() || |
| 1337 | decl_ctx_die.GetContainingDWOModuleDIE()) { |
| 1338 | alternate_defn = true; |
| 1339 | |
| 1340 | // We uniqued the parent class of this function to another |
| 1341 | // class |
| 1342 | // so we now need to associate all dies under "decl_ctx_die" |
| 1343 | // to |
| 1344 | // DIEs in the DIE for "class_type"... |
| 1345 | SymbolFileDWARF *class_symfile = NULL__null; |
| 1346 | DWARFDIE class_type_die; |
| 1347 | |
| 1348 | SymbolFileDWARFDebugMap *debug_map_symfile = |
| 1349 | dwarf->GetDebugMapSymfile(); |
| 1350 | if (debug_map_symfile) { |
| 1351 | class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex( |
| 1352 | SymbolFileDWARFDebugMap::GetOSOIndexFromUserID( |
| 1353 | class_type->GetID())); |
| 1354 | class_type_die = class_symfile->DebugInfo()->GetDIE( |
| 1355 | DIERef(class_type->GetID(), dwarf)); |
| 1356 | } else { |
| 1357 | class_symfile = dwarf; |
Value stored to 'class_symfile' is never read | |
| 1358 | class_type_die = dwarf->DebugInfo()->GetDIE( |
| 1359 | DIERef(class_type->GetID(), dwarf)); |
| 1360 | } |
| 1361 | if (class_type_die) { |
| 1362 | DWARFDIECollection failures; |
| 1363 | |
| 1364 | CopyUniqueClassMethodTypes(decl_ctx_die, class_type_die, |
| 1365 | class_type, failures); |
| 1366 | |
| 1367 | // FIXME do something with these failures that's smarter |
| 1368 | // than |
| 1369 | // just dropping them on the ground. Unfortunately classes |
| 1370 | // don't |
| 1371 | // like having stuff added to them after their definitions |
| 1372 | // are |
| 1373 | // complete... |
| 1374 | |
| 1375 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
| 1376 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
| 1377 | type_sp = type_ptr->shared_from_this(); |
| 1378 | break; |
| 1379 | } |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | if (specification_die_form.IsValid()) { |
| 1384 | // We have a specification which we are going to base our |
| 1385 | // function |
| 1386 | // prototype off of, so we need this type to be completed so |
| 1387 | // that the |
| 1388 | // m_die_to_decl_ctx for the method in the specification has a |
| 1389 | // valid |
| 1390 | // clang decl context. |
| 1391 | class_type->GetForwardCompilerType(); |
| 1392 | // If we have a specification, then the function type should |
| 1393 | // have been |
| 1394 | // made with the specification and not with this die. |
| 1395 | DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE( |
| 1396 | DIERef(specification_die_form)); |
| 1397 | clang::DeclContext *spec_clang_decl_ctx = |
| 1398 | GetClangDeclContextForDIE(spec_die); |
| 1399 | if (spec_clang_decl_ctx) { |
| 1400 | LinkDeclContextToDIE(spec_clang_decl_ctx, die); |
| 1401 | } else { |
| 1402 | dwarf->GetObjectFile()->GetModule()->ReportWarning( |
| 1403 | "0x%8.8" PRIx64"l" "x" ": DW_AT_specification(0x%8.8" PRIx64"l" "x" |
| 1404 | ") has no decl\n", |
| 1405 | die.GetID(), specification_die_form.Reference()); |
| 1406 | } |
| 1407 | type_handled = true; |
| 1408 | } else if (abstract_origin_die_form.IsValid()) { |
| 1409 | // We have a specification which we are going to base our |
| 1410 | // function |
| 1411 | // prototype off of, so we need this type to be completed so |
| 1412 | // that the |
| 1413 | // m_die_to_decl_ctx for the method in the abstract origin has |
| 1414 | // a valid |
| 1415 | // clang decl context. |
| 1416 | class_type->GetForwardCompilerType(); |
| 1417 | |
| 1418 | DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE( |
| 1419 | DIERef(abstract_origin_die_form)); |
| 1420 | clang::DeclContext *abs_clang_decl_ctx = |
| 1421 | GetClangDeclContextForDIE(abs_die); |
| 1422 | if (abs_clang_decl_ctx) { |
| 1423 | LinkDeclContextToDIE(abs_clang_decl_ctx, die); |
| 1424 | } else { |
| 1425 | dwarf->GetObjectFile()->GetModule()->ReportWarning( |
| 1426 | "0x%8.8" PRIx64"l" "x" ": DW_AT_abstract_origin(0x%8.8" PRIx64"l" "x" |
| 1427 | ") has no decl\n", |
| 1428 | die.GetID(), abstract_origin_die_form.Reference()); |
| 1429 | } |
| 1430 | type_handled = true; |
| 1431 | } else { |
| 1432 | CompilerType class_opaque_type = |
| 1433 | class_type->GetForwardCompilerType(); |
| 1434 | if (ClangASTContext::IsCXXClassType(class_opaque_type)) { |
| 1435 | if (class_opaque_type.IsBeingDefined() || alternate_defn) { |
| 1436 | if (!is_static && !die.HasChildren()) { |
| 1437 | // We have a C++ member function with no children (this |
| 1438 | // pointer!) |
| 1439 | // and clang will get mad if we try and make a function |
| 1440 | // that isn't |
| 1441 | // well formed in the DWARF, so we will just skip it... |
| 1442 | type_handled = true; |
| 1443 | } else { |
| 1444 | bool add_method = true; |
| 1445 | if (alternate_defn) { |
| 1446 | // If an alternate definition for the class exists, |
| 1447 | // then add the method only if an |
| 1448 | // equivalent is not already present. |
| 1449 | clang::CXXRecordDecl *record_decl = |
| 1450 | m_ast.GetAsCXXRecordDecl( |
| 1451 | class_opaque_type.GetOpaqueQualType()); |
| 1452 | if (record_decl) { |
| 1453 | for (auto method_iter = record_decl->method_begin(); |
| 1454 | method_iter != record_decl->method_end(); |
| 1455 | method_iter++) { |
| 1456 | clang::CXXMethodDecl *method_decl = *method_iter; |
| 1457 | if (method_decl->getNameInfo().getAsString() == |
| 1458 | std::string(type_name_cstr)) { |
| 1459 | if (method_decl->getType() == |
| 1460 | ClangUtil::GetQualType(clang_type)) { |
| 1461 | add_method = false; |
| 1462 | LinkDeclContextToDIE( |
| 1463 | ClangASTContext::GetAsDeclContext( |
| 1464 | method_decl), |
| 1465 | die); |
| 1466 | type_handled = true; |
| 1467 | |
| 1468 | break; |
| 1469 | } |
| 1470 | } |
| 1471 | } |
| 1472 | } |
| 1473 | } |
| 1474 | |
| 1475 | if (add_method) { |
| 1476 | llvm::PrettyStackTraceFormat stack_trace( |
| 1477 | "SymbolFileDWARF::ParseType() is adding a method " |
| 1478 | "%s to class %s in DIE 0x%8.8" PRIx64"l" "x" " from %s", |
| 1479 | type_name_cstr, |
| 1480 | class_type->GetName().GetCString(), die.GetID(), |
| 1481 | dwarf->GetObjectFile() |
| 1482 | ->GetFileSpec() |
| 1483 | .GetPath() |
| 1484 | .c_str()); |
| 1485 | |
| 1486 | const bool is_attr_used = false; |
| 1487 | // Neither GCC 4.2 nor clang++ currently set a valid |
| 1488 | // accessibility |
| 1489 | // in the DWARF for C++ methods... Default to public |
| 1490 | // for now... |
| 1491 | if (accessibility == eAccessNone) |
| 1492 | accessibility = eAccessPublic; |
| 1493 | |
| 1494 | clang::CXXMethodDecl *cxx_method_decl = |
| 1495 | m_ast.AddMethodToCXXRecordType( |
| 1496 | class_opaque_type.GetOpaqueQualType(), |
| 1497 | type_name_cstr, clang_type, accessibility, |
| 1498 | is_virtual, is_static, is_inline, is_explicit, |
| 1499 | is_attr_used, is_artificial); |
| 1500 | |
| 1501 | type_handled = cxx_method_decl != NULL__null; |
| 1502 | |
| 1503 | if (type_handled) { |
| 1504 | LinkDeclContextToDIE( |
| 1505 | ClangASTContext::GetAsDeclContext( |
| 1506 | cxx_method_decl), |
| 1507 | die); |
| 1508 | |
| 1509 | ClangASTMetadata metadata; |
| 1510 | metadata.SetUserID(die.GetID()); |
| 1511 | |
| 1512 | if (!object_pointer_name.empty()) { |
| 1513 | metadata.SetObjectPtrName( |
| 1514 | object_pointer_name.c_str()); |
| 1515 | if (log) |
| 1516 | log->Printf( |
| 1517 | "Setting object pointer name: %s on method " |
| 1518 | "object %p.\n", |
| 1519 | object_pointer_name.c_str(), |
| 1520 | static_cast<void *>(cxx_method_decl)); |
| 1521 | } |
| 1522 | m_ast.SetMetadata(cxx_method_decl, metadata); |
| 1523 | } else { |
| 1524 | ignore_containing_context = true; |
| 1525 | } |
| 1526 | } |
| 1527 | } |
| 1528 | } else { |
| 1529 | // We were asked to parse the type for a method in a |
| 1530 | // class, yet the |
| 1531 | // class hasn't been asked to complete itself through the |
| 1532 | // clang::ExternalASTSource protocol, so we need to just |
| 1533 | // have the |
| 1534 | // class complete itself and do things the right way, then |
| 1535 | // our |
| 1536 | // DIE should then have an entry in the |
| 1537 | // dwarf->GetDIEToType() map. First |
| 1538 | // we need to modify the dwarf->GetDIEToType() so it |
| 1539 | // doesn't think we are |
| 1540 | // trying to parse this DIE anymore... |
| 1541 | dwarf->GetDIEToType()[die.GetDIE()] = NULL__null; |
| 1542 | |
| 1543 | // Now we get the full type to force our class type to |
| 1544 | // complete itself |
| 1545 | // using the clang::ExternalASTSource protocol which will |
| 1546 | // parse all |
| 1547 | // base classes and all methods (including the method for |
| 1548 | // this DIE). |
| 1549 | class_type->GetFullCompilerType(); |
| 1550 | |
| 1551 | // The type for this DIE should have been filled in the |
| 1552 | // function call above |
| 1553 | type_ptr = dwarf->GetDIEToType()[die.GetDIE()]; |
| 1554 | if (type_ptr && type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
| 1555 | type_sp = type_ptr->shared_from_this(); |
| 1556 | break; |
| 1557 | } |
| 1558 | |
| 1559 | // FIXME This is fixing some even uglier behavior but we |
| 1560 | // really need to |
| 1561 | // uniq the methods of each class as well as the class |
| 1562 | // itself. |
| 1563 | // <rdar://problem/11240464> |
| 1564 | type_handled = true; |
| 1565 | } |
| 1566 | } |
| 1567 | } |
| 1568 | } |
| 1569 | } |
| 1570 | } |
| 1571 | |
| 1572 | if (!type_handled) { |
| 1573 | clang::FunctionDecl *function_decl = nullptr; |
| 1574 | |
| 1575 | if (abstract_origin_die_form.IsValid()) { |
| 1576 | DWARFDIE abs_die = |
| 1577 | dwarf->DebugInfo()->GetDIE(DIERef(abstract_origin_die_form)); |
| 1578 | |
| 1579 | SymbolContext sc; |
| 1580 | |
| 1581 | if (dwarf->ResolveType(abs_die)) { |
| 1582 | function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>( |
| 1583 | GetCachedClangDeclContextForDIE(abs_die)); |
| 1584 | |
| 1585 | if (function_decl) { |
| 1586 | LinkDeclContextToDIE(function_decl, die); |
| 1587 | } |
| 1588 | } |
| 1589 | } |
| 1590 | |
| 1591 | if (!function_decl) { |
| 1592 | // We just have a function that isn't part of a class |
| 1593 | function_decl = m_ast.CreateFunctionDeclaration( |
| 1594 | ignore_containing_context ? m_ast.GetTranslationUnitDecl() |
| 1595 | : containing_decl_ctx, |
| 1596 | type_name_cstr, clang_type, storage, is_inline); |
| 1597 | |
| 1598 | if (has_template_params) { |
| 1599 | ClangASTContext::TemplateParameterInfos template_param_infos; |
| 1600 | ParseTemplateParameterInfos(die, template_param_infos); |
| 1601 | clang::FunctionTemplateDecl *func_template_decl = |
| 1602 | m_ast.CreateFunctionTemplateDecl( |
| 1603 | containing_decl_ctx, function_decl, type_name_cstr, |
| 1604 | template_param_infos); |
| 1605 | m_ast.CreateFunctionTemplateSpecializationInfo( |
| 1606 | function_decl, func_template_decl, template_param_infos); |
| 1607 | } |
| 1608 | |
| 1609 | lldbassert(function_decl)lldb_private::lldb_assert(function_decl, "function_decl", __FUNCTION__ , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1609); |
| 1610 | |
| 1611 | if (function_decl) { |
| 1612 | LinkDeclContextToDIE(function_decl, die); |
| 1613 | |
| 1614 | if (!function_param_decls.empty()) |
| 1615 | m_ast.SetFunctionParameters(function_decl, |
| 1616 | &function_param_decls.front(), |
| 1617 | function_param_decls.size()); |
| 1618 | |
| 1619 | ClangASTMetadata metadata; |
| 1620 | metadata.SetUserID(die.GetID()); |
| 1621 | |
| 1622 | if (!object_pointer_name.empty()) { |
| 1623 | metadata.SetObjectPtrName(object_pointer_name.c_str()); |
| 1624 | if (log) |
| 1625 | log->Printf("Setting object pointer name: %s on function " |
| 1626 | "object %p.", |
| 1627 | object_pointer_name.c_str(), |
| 1628 | static_cast<void *>(function_decl)); |
| 1629 | } |
| 1630 | m_ast.SetMetadata(function_decl, metadata); |
| 1631 | } |
| 1632 | } |
| 1633 | } |
| 1634 | } |
| 1635 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, 0, NULL__null, |
| 1636 | LLDB_INVALID_UID(18446744073709551615UL), Type::eEncodingIsUID, &decl, |
| 1637 | clang_type, Type::eResolveStateFull)); |
| 1638 | assert(type_sp.get())((type_sp.get()) ? static_cast<void> (0) : __assert_fail ("type_sp.get()", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 1638, __PRETTY_FUNCTION__)); |
| 1639 | } break; |
| 1640 | |
| 1641 | case DW_TAG_array_type: { |
| 1642 | // Set a bit that lets us know that we are currently parsing this |
| 1643 | dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED((lldb_private::Type *)1); |
| 1644 | |
| 1645 | DWARFFormValue type_die_form; |
| 1646 | int64_t first_index = 0; |
| 1647 | uint32_t byte_stride = 0; |
| 1648 | uint32_t bit_stride = 0; |
| 1649 | bool is_vector = false; |
| 1650 | const size_t num_attributes = die.GetAttributes(attributes); |
| 1651 | |
| 1652 | if (num_attributes > 0) { |
| 1653 | uint32_t i; |
| 1654 | for (i = 0; i < num_attributes; ++i) { |
| 1655 | attr = attributes.AttributeAtIndex(i); |
| 1656 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 1657 | switch (attr) { |
| 1658 | case DW_AT_decl_file: |
| 1659 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 1660 | form_value.Unsigned())); |
| 1661 | break; |
| 1662 | case DW_AT_decl_line: |
| 1663 | decl.SetLine(form_value.Unsigned()); |
| 1664 | break; |
| 1665 | case DW_AT_decl_column: |
| 1666 | decl.SetColumn(form_value.Unsigned()); |
| 1667 | break; |
| 1668 | case DW_AT_name: |
| 1669 | type_name_cstr = form_value.AsCString(); |
| 1670 | type_name_const_str.SetCString(type_name_cstr); |
| 1671 | break; |
| 1672 | |
| 1673 | case DW_AT_type: |
| 1674 | type_die_form = form_value; |
| 1675 | break; |
| 1676 | case DW_AT_byte_size: |
| 1677 | break; // byte_size = form_value.Unsigned(); break; |
| 1678 | case DW_AT_byte_stride: |
| 1679 | byte_stride = form_value.Unsigned(); |
| 1680 | break; |
| 1681 | case DW_AT_bit_stride: |
| 1682 | bit_stride = form_value.Unsigned(); |
| 1683 | break; |
| 1684 | case DW_AT_GNU_vector: |
| 1685 | is_vector = form_value.Boolean(); |
| 1686 | break; |
| 1687 | case DW_AT_accessibility: |
| 1688 | break; // accessibility = |
| 1689 | // DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
| 1690 | case DW_AT_declaration: |
| 1691 | break; // is_forward_declaration = form_value.Boolean(); break; |
| 1692 | case DW_AT_allocated: |
| 1693 | case DW_AT_associated: |
| 1694 | case DW_AT_data_location: |
| 1695 | case DW_AT_description: |
| 1696 | case DW_AT_ordering: |
| 1697 | case DW_AT_start_scope: |
| 1698 | case DW_AT_visibility: |
| 1699 | case DW_AT_specification: |
| 1700 | case DW_AT_abstract_origin: |
| 1701 | case DW_AT_sibling: |
| 1702 | break; |
| 1703 | } |
| 1704 | } |
| 1705 | } |
| 1706 | |
| 1707 | DEBUG_PRINTF("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), |
| 1708 | DW_TAG_value_to_name(tag), type_name_cstr); |
| 1709 | |
| 1710 | DIERef type_die_ref(type_die_form); |
| 1711 | Type *element_type = dwarf->ResolveTypeUID(type_die_ref); |
| 1712 | |
| 1713 | if (element_type) { |
| 1714 | std::vector<uint64_t> element_orders; |
| 1715 | ParseChildArrayInfo(sc, die, first_index, element_orders, |
| 1716 | byte_stride, bit_stride); |
| 1717 | if (byte_stride == 0 && bit_stride == 0) |
| 1718 | byte_stride = element_type->GetByteSize(); |
| 1719 | CompilerType array_element_type = |
| 1720 | element_type->GetForwardCompilerType(); |
| 1721 | |
| 1722 | if (ClangASTContext::IsCXXClassType(array_element_type) && |
| 1723 | array_element_type.GetCompleteType() == false) { |
| 1724 | ModuleSP module_sp = die.GetModule(); |
| 1725 | if (module_sp) { |
| 1726 | if (die.GetCU()->GetProducer() == |
| 1727 | DWARFCompileUnit::eProducerClang) |
| 1728 | module_sp->ReportError( |
| 1729 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
| 1730 | "class/union/struct element type DIE 0x%8.8x that is a " |
| 1731 | "forward declaration, not a complete definition.\nTry " |
| 1732 | "compiling the source file with -fno-limit-debug-info or " |
| 1733 | "disable -gmodule", |
| 1734 | die.GetOffset(), type_die_ref.die_offset); |
| 1735 | else |
| 1736 | module_sp->ReportError( |
| 1737 | "DWARF DW_TAG_array_type DIE at 0x%8.8x has a " |
| 1738 | "class/union/struct element type DIE 0x%8.8x that is a " |
| 1739 | "forward declaration, not a complete definition.\nPlease " |
| 1740 | "file a bug against the compiler and include the " |
| 1741 | "preprocessed output for %s", |
| 1742 | die.GetOffset(), type_die_ref.die_offset, |
| 1743 | die.GetLLDBCompileUnit() |
| 1744 | ? die.GetLLDBCompileUnit()->GetPath().c_str() |
| 1745 | : "the source file"); |
| 1746 | } |
| 1747 | |
| 1748 | // We have no choice other than to pretend that the element class |
| 1749 | // type |
| 1750 | // is complete. If we don't do this, clang will crash when trying |
| 1751 | // to layout the class. Since we provide layout assistance, all |
| 1752 | // ivars in this class and other classes will be fine, this is |
| 1753 | // the best we can do short of crashing. |
| 1754 | if (ClangASTContext::StartTagDeclarationDefinition( |
| 1755 | array_element_type)) { |
| 1756 | ClangASTContext::CompleteTagDeclarationDefinition( |
| 1757 | array_element_type); |
| 1758 | } else { |
| 1759 | module_sp->ReportError("DWARF DIE at 0x%8.8x was not able to " |
| 1760 | "start its definition.\nPlease file a " |
| 1761 | "bug and attach the file at the start " |
| 1762 | "of this error message", |
| 1763 | type_die_ref.die_offset); |
| 1764 | } |
| 1765 | } |
| 1766 | |
| 1767 | uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; |
| 1768 | if (element_orders.size() > 0) { |
| 1769 | uint64_t num_elements = 0; |
| 1770 | std::vector<uint64_t>::const_reverse_iterator pos; |
| 1771 | std::vector<uint64_t>::const_reverse_iterator end = |
| 1772 | element_orders.rend(); |
| 1773 | for (pos = element_orders.rbegin(); pos != end; ++pos) { |
| 1774 | num_elements = *pos; |
| 1775 | clang_type = m_ast.CreateArrayType(array_element_type, |
| 1776 | num_elements, is_vector); |
| 1777 | array_element_type = clang_type; |
| 1778 | array_element_bit_stride = |
| 1779 | num_elements ? array_element_bit_stride * num_elements |
| 1780 | : array_element_bit_stride; |
| 1781 | } |
| 1782 | } else { |
| 1783 | clang_type = |
| 1784 | m_ast.CreateArrayType(array_element_type, 0, is_vector); |
| 1785 | } |
| 1786 | ConstString empty_name; |
| 1787 | type_sp.reset(new Type( |
| 1788 | die.GetID(), dwarf, empty_name, array_element_bit_stride / 8, |
| 1789 | NULL__null, DIERef(type_die_form).GetUID(dwarf), Type::eEncodingIsUID, |
| 1790 | &decl, clang_type, Type::eResolveStateFull)); |
| 1791 | type_sp->SetEncodingType(element_type); |
| 1792 | } |
| 1793 | } |
| 1794 | } break; |
| 1795 | |
| 1796 | case DW_TAG_ptr_to_member_type: { |
| 1797 | DWARFFormValue type_die_form; |
| 1798 | DWARFFormValue containing_type_die_form; |
| 1799 | |
| 1800 | const size_t num_attributes = die.GetAttributes(attributes); |
| 1801 | |
| 1802 | if (num_attributes > 0) { |
| 1803 | uint32_t i; |
| 1804 | for (i = 0; i < num_attributes; ++i) { |
| 1805 | attr = attributes.AttributeAtIndex(i); |
| 1806 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 1807 | switch (attr) { |
| 1808 | case DW_AT_type: |
| 1809 | type_die_form = form_value; |
| 1810 | break; |
| 1811 | case DW_AT_containing_type: |
| 1812 | containing_type_die_form = form_value; |
| 1813 | break; |
| 1814 | } |
| 1815 | } |
| 1816 | } |
| 1817 | |
| 1818 | Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form)); |
| 1819 | Type *class_type = |
| 1820 | dwarf->ResolveTypeUID(DIERef(containing_type_die_form)); |
| 1821 | |
| 1822 | CompilerType pointee_clang_type = |
| 1823 | pointee_type->GetForwardCompilerType(); |
| 1824 | CompilerType class_clang_type = class_type->GetLayoutCompilerType(); |
| 1825 | |
| 1826 | clang_type = ClangASTContext::CreateMemberPointerType( |
| 1827 | class_clang_type, pointee_clang_type); |
| 1828 | |
| 1829 | byte_size = clang_type.GetByteSize(nullptr); |
| 1830 | |
| 1831 | type_sp.reset(new Type(die.GetID(), dwarf, type_name_const_str, |
| 1832 | byte_size, NULL__null, LLDB_INVALID_UID(18446744073709551615UL), |
| 1833 | Type::eEncodingIsUID, NULL__null, clang_type, |
| 1834 | Type::eResolveStateForward)); |
| 1835 | } |
| 1836 | |
| 1837 | break; |
| 1838 | } |
| 1839 | default: |
| 1840 | dwarf->GetObjectFile()->GetModule()->ReportError( |
| 1841 | "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and " |
| 1842 | "attach the file at the start of this error message", |
| 1843 | die.GetOffset(), tag, DW_TAG_value_to_name(tag)); |
| 1844 | break; |
| 1845 | } |
| 1846 | |
| 1847 | if (type_sp.get()) { |
| 1848 | DWARFDIE sc_parent_die = |
| 1849 | SymbolFileDWARF::GetParentSymbolContextDIE(die); |
| 1850 | dw_tag_t sc_parent_tag = sc_parent_die.Tag(); |
| 1851 | |
| 1852 | SymbolContextScope *symbol_context_scope = NULL__null; |
| 1853 | if (sc_parent_tag == DW_TAG_compile_unit) { |
| 1854 | symbol_context_scope = sc.comp_unit; |
| 1855 | } else if (sc.function != NULL__null && sc_parent_die) { |
| 1856 | symbol_context_scope = |
| 1857 | sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); |
| 1858 | if (symbol_context_scope == NULL__null) |
| 1859 | symbol_context_scope = sc.function; |
| 1860 | } |
| 1861 | |
| 1862 | if (symbol_context_scope != NULL__null) { |
| 1863 | type_sp->SetSymbolContextScope(symbol_context_scope); |
| 1864 | } |
| 1865 | |
| 1866 | // We are ready to put this type into the uniqued list up at the module |
| 1867 | // level |
| 1868 | type_list->Insert(type_sp); |
| 1869 | |
| 1870 | dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get(); |
| 1871 | } |
| 1872 | } else if (type_ptr != DIE_IS_BEING_PARSED((lldb_private::Type *)1)) { |
| 1873 | type_sp = type_ptr->shared_from_this(); |
| 1874 | } |
| 1875 | } |
| 1876 | return type_sp; |
| 1877 | } |
| 1878 | |
| 1879 | // DWARF parsing functions |
| 1880 | |
| 1881 | class DWARFASTParserClang::DelayedAddObjCClassProperty { |
| 1882 | public: |
| 1883 | DelayedAddObjCClassProperty( |
| 1884 | const CompilerType &class_opaque_type, const char *property_name, |
| 1885 | const CompilerType &property_opaque_type, // The property type is only |
| 1886 | // required if you don't have an |
| 1887 | // ivar decl |
| 1888 | clang::ObjCIvarDecl *ivar_decl, const char *property_setter_name, |
| 1889 | const char *property_getter_name, uint32_t property_attributes, |
| 1890 | const ClangASTMetadata *metadata) |
| 1891 | : m_class_opaque_type(class_opaque_type), m_property_name(property_name), |
| 1892 | m_property_opaque_type(property_opaque_type), m_ivar_decl(ivar_decl), |
| 1893 | m_property_setter_name(property_setter_name), |
| 1894 | m_property_getter_name(property_getter_name), |
| 1895 | m_property_attributes(property_attributes) { |
| 1896 | if (metadata != NULL__null) { |
| 1897 | m_metadata_ap.reset(new ClangASTMetadata()); |
| 1898 | *m_metadata_ap = *metadata; |
| 1899 | } |
| 1900 | } |
| 1901 | |
| 1902 | DelayedAddObjCClassProperty(const DelayedAddObjCClassProperty &rhs) { |
| 1903 | *this = rhs; |
| 1904 | } |
| 1905 | |
| 1906 | DelayedAddObjCClassProperty & |
| 1907 | operator=(const DelayedAddObjCClassProperty &rhs) { |
| 1908 | m_class_opaque_type = rhs.m_class_opaque_type; |
| 1909 | m_property_name = rhs.m_property_name; |
| 1910 | m_property_opaque_type = rhs.m_property_opaque_type; |
| 1911 | m_ivar_decl = rhs.m_ivar_decl; |
| 1912 | m_property_setter_name = rhs.m_property_setter_name; |
| 1913 | m_property_getter_name = rhs.m_property_getter_name; |
| 1914 | m_property_attributes = rhs.m_property_attributes; |
| 1915 | |
| 1916 | if (rhs.m_metadata_ap.get()) { |
| 1917 | m_metadata_ap.reset(new ClangASTMetadata()); |
| 1918 | *m_metadata_ap = *rhs.m_metadata_ap; |
| 1919 | } |
| 1920 | return *this; |
| 1921 | } |
| 1922 | |
| 1923 | bool Finalize() { |
| 1924 | return ClangASTContext::AddObjCClassProperty( |
| 1925 | m_class_opaque_type, m_property_name, m_property_opaque_type, |
| 1926 | m_ivar_decl, m_property_setter_name, m_property_getter_name, |
| 1927 | m_property_attributes, m_metadata_ap.get()); |
| 1928 | } |
| 1929 | |
| 1930 | private: |
| 1931 | CompilerType m_class_opaque_type; |
| 1932 | const char *m_property_name; |
| 1933 | CompilerType m_property_opaque_type; |
| 1934 | clang::ObjCIvarDecl *m_ivar_decl; |
| 1935 | const char *m_property_setter_name; |
| 1936 | const char *m_property_getter_name; |
| 1937 | uint32_t m_property_attributes; |
| 1938 | std::unique_ptr<ClangASTMetadata> m_metadata_ap; |
| 1939 | }; |
| 1940 | |
| 1941 | bool DWARFASTParserClang::ParseTemplateDIE( |
| 1942 | const DWARFDIE &die, |
| 1943 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
| 1944 | const dw_tag_t tag = die.Tag(); |
| 1945 | |
| 1946 | switch (tag) { |
| 1947 | case DW_TAG_GNU_template_parameter_pack: { |
| 1948 | template_param_infos.packed_args.reset( |
| 1949 | new ClangASTContext::TemplateParameterInfos); |
| 1950 | for (DWARFDIE child_die = die.GetFirstChild(); child_die.IsValid(); |
| 1951 | child_die = child_die.GetSibling()) { |
| 1952 | if (!ParseTemplateDIE(child_die, *template_param_infos.packed_args)) |
| 1953 | return false; |
| 1954 | } |
| 1955 | if (const char *name = die.GetName()) { |
| 1956 | template_param_infos.pack_name = name; |
| 1957 | } |
| 1958 | return true; |
| 1959 | } |
| 1960 | case DW_TAG_template_type_parameter: |
| 1961 | case DW_TAG_template_value_parameter: { |
| 1962 | DWARFAttributes attributes; |
| 1963 | const size_t num_attributes = die.GetAttributes(attributes); |
| 1964 | const char *name = nullptr; |
| 1965 | CompilerType clang_type; |
| 1966 | uint64_t uval64 = 0; |
| 1967 | bool uval64_valid = false; |
| 1968 | if (num_attributes > 0) { |
| 1969 | DWARFFormValue form_value; |
| 1970 | for (size_t i = 0; i < num_attributes; ++i) { |
| 1971 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| 1972 | |
| 1973 | switch (attr) { |
| 1974 | case DW_AT_name: |
| 1975 | if (attributes.ExtractFormValueAtIndex(i, form_value)) |
| 1976 | name = form_value.AsCString(); |
| 1977 | break; |
| 1978 | |
| 1979 | case DW_AT_type: |
| 1980 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 1981 | Type *lldb_type = die.ResolveTypeUID(DIERef(form_value)); |
| 1982 | if (lldb_type) |
| 1983 | clang_type = lldb_type->GetForwardCompilerType(); |
| 1984 | } |
| 1985 | break; |
| 1986 | |
| 1987 | case DW_AT_const_value: |
| 1988 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 1989 | uval64_valid = true; |
| 1990 | uval64 = form_value.Unsigned(); |
| 1991 | } |
| 1992 | break; |
| 1993 | default: |
| 1994 | break; |
| 1995 | } |
| 1996 | } |
| 1997 | |
| 1998 | clang::ASTContext *ast = m_ast.getASTContext(); |
| 1999 | if (!clang_type) |
| 2000 | clang_type = m_ast.GetBasicType(eBasicTypeVoid); |
| 2001 | |
| 2002 | if (clang_type) { |
| 2003 | bool is_signed = false; |
| 2004 | if (name && name[0]) |
| 2005 | template_param_infos.names.push_back(name); |
| 2006 | else |
| 2007 | template_param_infos.names.push_back(NULL__null); |
| 2008 | |
| 2009 | // Get the signed value for any integer or enumeration if available |
| 2010 | clang_type.IsIntegerOrEnumerationType(is_signed); |
| 2011 | |
| 2012 | if (tag == DW_TAG_template_value_parameter && uval64_valid) { |
| 2013 | llvm::APInt apint(clang_type.GetBitSize(nullptr), uval64, is_signed); |
| 2014 | template_param_infos.args.push_back( |
| 2015 | clang::TemplateArgument(*ast, llvm::APSInt(apint, !is_signed), |
| 2016 | ClangUtil::GetQualType(clang_type))); |
| 2017 | } else { |
| 2018 | template_param_infos.args.push_back( |
| 2019 | clang::TemplateArgument(ClangUtil::GetQualType(clang_type))); |
| 2020 | } |
| 2021 | } else { |
| 2022 | return false; |
| 2023 | } |
| 2024 | } |
| 2025 | } |
| 2026 | return true; |
| 2027 | |
| 2028 | default: |
| 2029 | break; |
| 2030 | } |
| 2031 | return false; |
| 2032 | } |
| 2033 | |
| 2034 | bool DWARFASTParserClang::ParseTemplateParameterInfos( |
| 2035 | const DWARFDIE &parent_die, |
| 2036 | ClangASTContext::TemplateParameterInfos &template_param_infos) { |
| 2037 | |
| 2038 | if (!parent_die) |
| 2039 | return false; |
| 2040 | |
| 2041 | Args template_parameter_names; |
| 2042 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
| 2043 | die = die.GetSibling()) { |
| 2044 | const dw_tag_t tag = die.Tag(); |
| 2045 | |
| 2046 | switch (tag) { |
| 2047 | case DW_TAG_template_type_parameter: |
| 2048 | case DW_TAG_template_value_parameter: |
| 2049 | case DW_TAG_GNU_template_parameter_pack: |
| 2050 | ParseTemplateDIE(die, template_param_infos); |
| 2051 | break; |
| 2052 | |
| 2053 | default: |
| 2054 | break; |
| 2055 | } |
| 2056 | } |
| 2057 | if (template_param_infos.args.empty()) |
| 2058 | return false; |
| 2059 | return template_param_infos.args.size() == template_param_infos.names.size(); |
| 2060 | } |
| 2061 | |
| 2062 | bool DWARFASTParserClang::CompleteTypeFromDWARF(const DWARFDIE &die, |
| 2063 | lldb_private::Type *type, |
| 2064 | CompilerType &clang_type) { |
| 2065 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 2066 | |
| 2067 | std::lock_guard<std::recursive_mutex> guard( |
| 2068 | dwarf->GetObjectFile()->GetModule()->GetMutex()); |
| 2069 | |
| 2070 | // Disable external storage for this type so we don't get anymore |
| 2071 | // clang::ExternalASTSource queries for this type. |
| 2072 | m_ast.SetHasExternalStorage(clang_type.GetOpaqueQualType(), false); |
| 2073 | |
| 2074 | if (!die) |
| 2075 | return false; |
| 2076 | |
| 2077 | #if defined LLDB_CONFIGURATION_DEBUG |
| 2078 | //---------------------------------------------------------------------- |
| 2079 | // For debugging purposes, the LLDB_DWARF_DONT_COMPLETE_TYPENAMES |
| 2080 | // environment variable can be set with one or more typenames separated |
| 2081 | // by ';' characters. This will cause this function to not complete any |
| 2082 | // types whose names match. |
| 2083 | // |
| 2084 | // Examples of setting this environment variable: |
| 2085 | // |
| 2086 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo |
| 2087 | // LLDB_DWARF_DONT_COMPLETE_TYPENAMES=Foo;Bar;Baz |
| 2088 | //---------------------------------------------------------------------- |
| 2089 | const char *dont_complete_typenames_cstr = |
| 2090 | getenv("LLDB_DWARF_DONT_COMPLETE_TYPENAMES"); |
| 2091 | if (dont_complete_typenames_cstr && dont_complete_typenames_cstr[0]) { |
| 2092 | const char *die_name = die.GetName(); |
| 2093 | if (die_name && die_name[0]) { |
| 2094 | const char *match = strstr(dont_complete_typenames_cstr, die_name); |
| 2095 | if (match) { |
| 2096 | size_t die_name_length = strlen(die_name); |
| 2097 | while (match) { |
| 2098 | const char separator_char = ';'; |
| 2099 | const char next_char = match[die_name_length]; |
| 2100 | if (next_char == '\0' || next_char == separator_char) { |
| 2101 | if (match == dont_complete_typenames_cstr || |
| 2102 | match[-1] == separator_char) |
| 2103 | return false; |
| 2104 | } |
| 2105 | match = strstr(match + 1, die_name); |
| 2106 | } |
| 2107 | } |
| 2108 | } |
| 2109 | } |
| 2110 | #endif |
| 2111 | |
| 2112 | const dw_tag_t tag = die.Tag(); |
| 2113 | |
| 2114 | Log *log = |
| 2115 | nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); |
| 2116 | if (log) |
| 2117 | dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace( |
| 2118 | log, "0x%8.8" PRIx64"l" "x" ": %s '%s' resolving forward declaration...", |
| 2119 | die.GetID(), die.GetTagAsCString(), type->GetName().AsCString()); |
| 2120 | assert(clang_type)((clang_type) ? static_cast<void> (0) : __assert_fail ( "clang_type", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2120, __PRETTY_FUNCTION__)); |
| 2121 | DWARFAttributes attributes; |
| 2122 | switch (tag) { |
| 2123 | case DW_TAG_structure_type: |
| 2124 | case DW_TAG_union_type: |
| 2125 | case DW_TAG_class_type: { |
| 2126 | ClangASTImporter::LayoutInfo layout_info; |
| 2127 | |
| 2128 | { |
| 2129 | if (die.HasChildren()) { |
| 2130 | LanguageType class_language = eLanguageTypeUnknown; |
| 2131 | if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) { |
| 2132 | class_language = eLanguageTypeObjC; |
| 2133 | // For objective C we don't start the definition when |
| 2134 | // the class is created. |
| 2135 | ClangASTContext::StartTagDeclarationDefinition(clang_type); |
| 2136 | } |
| 2137 | |
| 2138 | int tag_decl_kind = -1; |
| 2139 | AccessType default_accessibility = eAccessNone; |
| 2140 | if (tag == DW_TAG_structure_type) { |
| 2141 | tag_decl_kind = clang::TTK_Struct; |
| 2142 | default_accessibility = eAccessPublic; |
| 2143 | } else if (tag == DW_TAG_union_type) { |
| 2144 | tag_decl_kind = clang::TTK_Union; |
| 2145 | default_accessibility = eAccessPublic; |
| 2146 | } else if (tag == DW_TAG_class_type) { |
| 2147 | tag_decl_kind = clang::TTK_Class; |
| 2148 | default_accessibility = eAccessPrivate; |
| 2149 | } |
| 2150 | |
| 2151 | SymbolContext sc(die.GetLLDBCompileUnit()); |
| 2152 | std::vector<clang::CXXBaseSpecifier *> base_classes; |
| 2153 | std::vector<int> member_accessibilities; |
| 2154 | bool is_a_class = false; |
| 2155 | // Parse members and base classes first |
| 2156 | DWARFDIECollection member_function_dies; |
| 2157 | |
| 2158 | DelayedPropertyList delayed_properties; |
| 2159 | ParseChildMembers(sc, die, clang_type, class_language, base_classes, |
| 2160 | member_accessibilities, member_function_dies, |
| 2161 | delayed_properties, default_accessibility, is_a_class, |
| 2162 | layout_info); |
| 2163 | |
| 2164 | // Now parse any methods if there were any... |
| 2165 | size_t num_functions = member_function_dies.Size(); |
| 2166 | if (num_functions > 0) { |
| 2167 | for (size_t i = 0; i < num_functions; ++i) { |
| 2168 | dwarf->ResolveType(member_function_dies.GetDIEAtIndex(i)); |
| 2169 | } |
| 2170 | } |
| 2171 | |
| 2172 | if (class_language == eLanguageTypeObjC) { |
| 2173 | ConstString class_name(clang_type.GetTypeName()); |
| 2174 | if (class_name) { |
| 2175 | DIEArray method_die_offsets; |
| 2176 | dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); |
| 2177 | |
| 2178 | if (!method_die_offsets.empty()) { |
| 2179 | DWARFDebugInfo *debug_info = dwarf->DebugInfo(); |
| 2180 | |
| 2181 | const size_t num_matches = method_die_offsets.size(); |
| 2182 | for (size_t i = 0; i < num_matches; ++i) { |
| 2183 | const DIERef &die_ref = method_die_offsets[i]; |
| 2184 | DWARFDIE method_die = debug_info->GetDIE(die_ref); |
| 2185 | |
| 2186 | if (method_die) |
| 2187 | method_die.ResolveType(); |
| 2188 | } |
| 2189 | } |
| 2190 | |
| 2191 | for (DelayedPropertyList::iterator pi = delayed_properties.begin(), |
| 2192 | pe = delayed_properties.end(); |
| 2193 | pi != pe; ++pi) |
| 2194 | pi->Finalize(); |
| 2195 | } |
| 2196 | } |
| 2197 | |
| 2198 | // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we |
| 2199 | // need to tell the clang type it is actually a class. |
| 2200 | if (class_language != eLanguageTypeObjC) { |
| 2201 | if (is_a_class && tag_decl_kind != clang::TTK_Class) |
| 2202 | m_ast.SetTagTypeKind(ClangUtil::GetQualType(clang_type), |
| 2203 | clang::TTK_Class); |
| 2204 | } |
| 2205 | |
| 2206 | // Since DW_TAG_structure_type gets used for both classes |
| 2207 | // and structures, we may need to set any DW_TAG_member |
| 2208 | // fields to have a "private" access if none was specified. |
| 2209 | // When we parsed the child members we tracked that actual |
| 2210 | // accessibility value for each DW_TAG_member in the |
| 2211 | // "member_accessibilities" array. If the value for the |
| 2212 | // member is zero, then it was set to the "default_accessibility" |
| 2213 | // which for structs was "public". Below we correct this |
| 2214 | // by setting any fields to "private" that weren't correctly |
| 2215 | // set. |
| 2216 | if (is_a_class && !member_accessibilities.empty()) { |
| 2217 | // This is a class and all members that didn't have |
| 2218 | // their access specified are private. |
| 2219 | m_ast.SetDefaultAccessForRecordFields( |
| 2220 | m_ast.GetAsRecordDecl(clang_type), eAccessPrivate, |
| 2221 | &member_accessibilities.front(), member_accessibilities.size()); |
| 2222 | } |
| 2223 | |
| 2224 | if (!base_classes.empty()) { |
| 2225 | // Make sure all base classes refer to complete types and not |
| 2226 | // forward declarations. If we don't do this, clang will crash |
| 2227 | // with an assertion in the call to |
| 2228 | // clang_type.SetBaseClassesForClassType() |
| 2229 | for (auto &base_class : base_classes) { |
| 2230 | clang::TypeSourceInfo *type_source_info = |
| 2231 | base_class->getTypeSourceInfo(); |
| 2232 | if (type_source_info) { |
| 2233 | CompilerType base_class_type( |
| 2234 | &m_ast, type_source_info->getType().getAsOpaquePtr()); |
| 2235 | if (base_class_type.GetCompleteType() == false) { |
| 2236 | auto module = dwarf->GetObjectFile()->GetModule(); |
| 2237 | module->ReportError(":: Class '%s' has a base class '%s' which " |
| 2238 | "does not have a complete definition.", |
| 2239 | die.GetName(), |
| 2240 | base_class_type.GetTypeName().GetCString()); |
| 2241 | if (die.GetCU()->GetProducer() == |
| 2242 | DWARFCompileUnit::eProducerClang) |
| 2243 | module->ReportError(":: Try compiling the source file with " |
| 2244 | "-fno-limit-debug-info."); |
| 2245 | |
| 2246 | // We have no choice other than to pretend that the base class |
| 2247 | // is complete. If we don't do this, clang will crash when we |
| 2248 | // call setBases() inside of |
| 2249 | // "clang_type.SetBaseClassesForClassType()" |
| 2250 | // below. Since we provide layout assistance, all ivars in this |
| 2251 | // class and other classes will be fine, this is the best we can |
| 2252 | // do |
| 2253 | // short of crashing. |
| 2254 | if (ClangASTContext::StartTagDeclarationDefinition( |
| 2255 | base_class_type)) { |
| 2256 | ClangASTContext::CompleteTagDeclarationDefinition( |
| 2257 | base_class_type); |
| 2258 | } |
| 2259 | } |
| 2260 | } |
| 2261 | } |
| 2262 | m_ast.SetBaseClassesForClassType(clang_type.GetOpaqueQualType(), |
| 2263 | &base_classes.front(), |
| 2264 | base_classes.size()); |
| 2265 | |
| 2266 | // Clang will copy each CXXBaseSpecifier in "base_classes" |
| 2267 | // so we have to free them all. |
| 2268 | ClangASTContext::DeleteBaseClassSpecifiers(&base_classes.front(), |
| 2269 | base_classes.size()); |
| 2270 | } |
| 2271 | } |
| 2272 | } |
| 2273 | |
| 2274 | ClangASTContext::BuildIndirectFields(clang_type); |
| 2275 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
| 2276 | |
| 2277 | if (!layout_info.field_offsets.empty() || |
| 2278 | !layout_info.base_offsets.empty() || |
| 2279 | !layout_info.vbase_offsets.empty()) { |
| 2280 | if (type) |
| 2281 | layout_info.bit_size = type->GetByteSize() * 8; |
| 2282 | if (layout_info.bit_size == 0) |
| 2283 | layout_info.bit_size = |
| 2284 | die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; |
| 2285 | |
| 2286 | clang::CXXRecordDecl *record_decl = |
| 2287 | m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); |
| 2288 | if (record_decl) { |
| 2289 | if (log) { |
| 2290 | ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); |
| 2291 | |
| 2292 | if (module_sp) { |
| 2293 | module_sp->LogMessage( |
| 2294 | log, |
| 2295 | "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) " |
| 2296 | "caching layout info for record_decl = %p, bit_size = %" PRIu64"l" "u" |
| 2297 | ", alignment = %" PRIu64"l" "u" |
| 2298 | ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", |
| 2299 | static_cast<void *>(clang_type.GetOpaqueQualType()), |
| 2300 | static_cast<void *>(record_decl), layout_info.bit_size, |
| 2301 | layout_info.alignment, |
| 2302 | static_cast<uint32_t>(layout_info.field_offsets.size()), |
| 2303 | static_cast<uint32_t>(layout_info.base_offsets.size()), |
| 2304 | static_cast<uint32_t>(layout_info.vbase_offsets.size())); |
| 2305 | |
| 2306 | uint32_t idx; |
| 2307 | { |
| 2308 | llvm::DenseMap<const clang::FieldDecl *, uint64_t>::const_iterator |
| 2309 | pos, |
| 2310 | end = layout_info.field_offsets.end(); |
| 2311 | for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; |
| 2312 | ++pos, ++idx) { |
| 2313 | module_sp->LogMessage( |
| 2314 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
| 2315 | "%p) field[%u] = { bit_offset=%u, name='%s' }", |
| 2316 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
| 2317 | static_cast<uint32_t>(pos->second), |
| 2318 | pos->first->getNameAsString().c_str()); |
| 2319 | } |
| 2320 | } |
| 2321 | |
| 2322 | { |
| 2323 | llvm::DenseMap<const clang::CXXRecordDecl *, |
| 2324 | clang::CharUnits>::const_iterator base_pos, |
| 2325 | base_end = layout_info.base_offsets.end(); |
| 2326 | for (idx = 0, base_pos = layout_info.base_offsets.begin(); |
| 2327 | base_pos != base_end; ++base_pos, ++idx) { |
| 2328 | module_sp->LogMessage( |
| 2329 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
| 2330 | "%p) base[%u] = { byte_offset=%u, name='%s' }", |
| 2331 | clang_type.GetOpaqueQualType(), idx, |
| 2332 | (uint32_t)base_pos->second.getQuantity(), |
| 2333 | base_pos->first->getNameAsString().c_str()); |
| 2334 | } |
| 2335 | } |
| 2336 | { |
| 2337 | llvm::DenseMap<const clang::CXXRecordDecl *, |
| 2338 | clang::CharUnits>::const_iterator vbase_pos, |
| 2339 | vbase_end = layout_info.vbase_offsets.end(); |
| 2340 | for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); |
| 2341 | vbase_pos != vbase_end; ++vbase_pos, ++idx) { |
| 2342 | module_sp->LogMessage( |
| 2343 | log, "ClangASTContext::CompleteTypeFromDWARF (clang_type = " |
| 2344 | "%p) vbase[%u] = { byte_offset=%u, name='%s' }", |
| 2345 | static_cast<void *>(clang_type.GetOpaqueQualType()), idx, |
| 2346 | static_cast<uint32_t>(vbase_pos->second.getQuantity()), |
| 2347 | vbase_pos->first->getNameAsString().c_str()); |
| 2348 | } |
| 2349 | } |
| 2350 | } |
| 2351 | } |
| 2352 | GetClangASTImporter().InsertRecordDecl(record_decl, layout_info); |
| 2353 | } |
| 2354 | } |
| 2355 | } |
| 2356 | |
| 2357 | return (bool)clang_type; |
| 2358 | |
| 2359 | case DW_TAG_enumeration_type: |
| 2360 | if (ClangASTContext::StartTagDeclarationDefinition(clang_type)) { |
| 2361 | if (die.HasChildren()) { |
| 2362 | SymbolContext sc(die.GetLLDBCompileUnit()); |
| 2363 | bool is_signed = false; |
| 2364 | clang_type.IsIntegerType(is_signed); |
| 2365 | ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), |
| 2366 | die); |
| 2367 | } |
| 2368 | ClangASTContext::CompleteTagDeclarationDefinition(clang_type); |
| 2369 | } |
| 2370 | return (bool)clang_type; |
| 2371 | |
| 2372 | default: |
| 2373 | assert(false && "not a forward clang type decl!")((false && "not a forward clang type decl!") ? static_cast <void> (0) : __assert_fail ("false && \"not a forward clang type decl!\"" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2373, __PRETTY_FUNCTION__)); |
| 2374 | break; |
| 2375 | } |
| 2376 | |
| 2377 | return false; |
| 2378 | } |
| 2379 | |
| 2380 | std::vector<DWARFDIE> DWARFASTParserClang::GetDIEForDeclContext( |
| 2381 | lldb_private::CompilerDeclContext decl_context) { |
| 2382 | std::vector<DWARFDIE> result; |
| 2383 | for (auto it = m_decl_ctx_to_die.find( |
| 2384 | (clang::DeclContext *)decl_context.GetOpaqueDeclContext()); |
| 2385 | it != m_decl_ctx_to_die.end(); it++) |
| 2386 | result.push_back(it->second); |
| 2387 | return result; |
| 2388 | } |
| 2389 | |
| 2390 | CompilerDecl DWARFASTParserClang::GetDeclForUIDFromDWARF(const DWARFDIE &die) { |
| 2391 | clang::Decl *clang_decl = GetClangDeclForDIE(die); |
| 2392 | if (clang_decl != nullptr) |
| 2393 | return CompilerDecl(&m_ast, clang_decl); |
| 2394 | return CompilerDecl(); |
| 2395 | } |
| 2396 | |
| 2397 | CompilerDeclContext |
| 2398 | DWARFASTParserClang::GetDeclContextForUIDFromDWARF(const DWARFDIE &die) { |
| 2399 | clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE(die); |
| 2400 | if (clang_decl_ctx) |
| 2401 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
| 2402 | return CompilerDeclContext(); |
| 2403 | } |
| 2404 | |
| 2405 | CompilerDeclContext |
| 2406 | DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF(const DWARFDIE &die) { |
| 2407 | clang::DeclContext *clang_decl_ctx = |
| 2408 | GetClangDeclContextContainingDIE(die, nullptr); |
| 2409 | if (clang_decl_ctx) |
| 2410 | return CompilerDeclContext(&m_ast, clang_decl_ctx); |
| 2411 | return CompilerDeclContext(); |
| 2412 | } |
| 2413 | |
| 2414 | size_t DWARFASTParserClang::ParseChildEnumerators( |
| 2415 | const SymbolContext &sc, lldb_private::CompilerType &clang_type, |
| 2416 | bool is_signed, uint32_t enumerator_byte_size, const DWARFDIE &parent_die) { |
| 2417 | if (!parent_die) |
| 2418 | return 0; |
| 2419 | |
| 2420 | size_t enumerators_added = 0; |
| 2421 | |
| 2422 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
| 2423 | die = die.GetSibling()) { |
| 2424 | const dw_tag_t tag = die.Tag(); |
| 2425 | if (tag == DW_TAG_enumerator) { |
| 2426 | DWARFAttributes attributes; |
| 2427 | const size_t num_child_attributes = die.GetAttributes(attributes); |
| 2428 | if (num_child_attributes > 0) { |
| 2429 | const char *name = NULL__null; |
| 2430 | bool got_value = false; |
| 2431 | int64_t enum_value = 0; |
| 2432 | Declaration decl; |
| 2433 | |
| 2434 | uint32_t i; |
| 2435 | for (i = 0; i < num_child_attributes; ++i) { |
| 2436 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| 2437 | DWARFFormValue form_value; |
| 2438 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 2439 | switch (attr) { |
| 2440 | case DW_AT_const_value: |
| 2441 | got_value = true; |
| 2442 | if (is_signed) |
| 2443 | enum_value = form_value.Signed(); |
| 2444 | else |
| 2445 | enum_value = form_value.Unsigned(); |
| 2446 | break; |
| 2447 | |
| 2448 | case DW_AT_name: |
| 2449 | name = form_value.AsCString(); |
| 2450 | break; |
| 2451 | |
| 2452 | case DW_AT_description: |
| 2453 | default: |
| 2454 | case DW_AT_decl_file: |
| 2455 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 2456 | form_value.Unsigned())); |
| 2457 | break; |
| 2458 | case DW_AT_decl_line: |
| 2459 | decl.SetLine(form_value.Unsigned()); |
| 2460 | break; |
| 2461 | case DW_AT_decl_column: |
| 2462 | decl.SetColumn(form_value.Unsigned()); |
| 2463 | break; |
| 2464 | case DW_AT_sibling: |
| 2465 | break; |
| 2466 | } |
| 2467 | } |
| 2468 | } |
| 2469 | |
| 2470 | if (name && name[0] && got_value) { |
| 2471 | m_ast.AddEnumerationValueToEnumerationType( |
| 2472 | clang_type.GetOpaqueQualType(), |
| 2473 | m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), |
| 2474 | decl, name, enum_value, enumerator_byte_size * 8); |
| 2475 | ++enumerators_added; |
| 2476 | } |
| 2477 | } |
| 2478 | } |
| 2479 | } |
| 2480 | return enumerators_added; |
| 2481 | } |
| 2482 | |
| 2483 | #if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE1) |
| 2484 | |
| 2485 | class DIEStack { |
| 2486 | public: |
| 2487 | void Push(const DWARFDIE &die) { m_dies.push_back(die); } |
| 2488 | |
| 2489 | void LogDIEs(Log *log) { |
| 2490 | StreamString log_strm; |
| 2491 | const size_t n = m_dies.size(); |
| 2492 | log_strm.Printf("DIEStack[%" PRIu64"l" "u" "]:\n", (uint64_t)n); |
| 2493 | for (size_t i = 0; i < n; i++) { |
| 2494 | std::string qualified_name; |
| 2495 | const DWARFDIE &die = m_dies[i]; |
| 2496 | die.GetQualifiedName(qualified_name); |
| 2497 | log_strm.Printf("[%" PRIu64"l" "u" "] 0x%8.8x: %s name='%s'\n", (uint64_t)i, |
| 2498 | die.GetOffset(), die.GetTagAsCString(), |
| 2499 | qualified_name.c_str()); |
| 2500 | } |
| 2501 | log->PutCString(log_strm.GetData()); |
| 2502 | } |
| 2503 | void Pop() { m_dies.pop_back(); } |
| 2504 | |
| 2505 | class ScopedPopper { |
| 2506 | public: |
| 2507 | ScopedPopper(DIEStack &die_stack) |
| 2508 | : m_die_stack(die_stack), m_valid(false) {} |
| 2509 | |
| 2510 | void Push(const DWARFDIE &die) { |
| 2511 | m_valid = true; |
| 2512 | m_die_stack.Push(die); |
| 2513 | } |
| 2514 | |
| 2515 | ~ScopedPopper() { |
| 2516 | if (m_valid) |
| 2517 | m_die_stack.Pop(); |
| 2518 | } |
| 2519 | |
| 2520 | protected: |
| 2521 | DIEStack &m_die_stack; |
| 2522 | bool m_valid; |
| 2523 | }; |
| 2524 | |
| 2525 | protected: |
| 2526 | typedef std::vector<DWARFDIE> Stack; |
| 2527 | Stack m_dies; |
| 2528 | }; |
| 2529 | #endif |
| 2530 | |
| 2531 | Function *DWARFASTParserClang::ParseFunctionFromDWARF(const SymbolContext &sc, |
| 2532 | const DWARFDIE &die) { |
| 2533 | DWARFRangeList func_ranges; |
| 2534 | const char *name = NULL__null; |
| 2535 | const char *mangled = NULL__null; |
| 2536 | int decl_file = 0; |
| 2537 | int decl_line = 0; |
| 2538 | int decl_column = 0; |
| 2539 | int call_file = 0; |
| 2540 | int call_line = 0; |
| 2541 | int call_column = 0; |
| 2542 | DWARFExpression frame_base(die.GetCU()); |
| 2543 | |
| 2544 | const dw_tag_t tag = die.Tag(); |
| 2545 | |
| 2546 | if (tag != DW_TAG_subprogram) |
| 2547 | return NULL__null; |
| 2548 | |
| 2549 | if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line, |
| 2550 | decl_column, call_file, call_line, call_column, |
| 2551 | &frame_base)) { |
| 2552 | |
| 2553 | // Union of all ranges in the function DIE (if the function is |
| 2554 | // discontiguous) |
| 2555 | AddressRange func_range; |
| 2556 | lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase(0); |
| 2557 | lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd(0); |
| 2558 | if (lowest_func_addr != LLDB_INVALID_ADDRESS(18446744073709551615UL) && |
| 2559 | lowest_func_addr <= highest_func_addr) { |
| 2560 | ModuleSP module_sp(die.GetModule()); |
| 2561 | func_range.GetBaseAddress().ResolveAddressUsingFileSections( |
| 2562 | lowest_func_addr, module_sp->GetSectionList()); |
| 2563 | if (func_range.GetBaseAddress().IsValid()) |
| 2564 | func_range.SetByteSize(highest_func_addr - lowest_func_addr); |
| 2565 | } |
| 2566 | |
| 2567 | if (func_range.GetBaseAddress().IsValid()) { |
| 2568 | Mangled func_name; |
| 2569 | if (mangled) |
| 2570 | func_name.SetValue(ConstString(mangled), true); |
| 2571 | else if (die.GetParent().Tag() == DW_TAG_compile_unit && |
| 2572 | Language::LanguageIsCPlusPlus(die.GetLanguage()) && name && |
| 2573 | strcmp(name, "main") != 0) { |
| 2574 | // If the mangled name is not present in the DWARF, generate the |
| 2575 | // demangled name |
| 2576 | // using the decl context. We skip if the function is "main" as its name |
| 2577 | // is |
| 2578 | // never mangled. |
| 2579 | bool is_static = false; |
| 2580 | bool is_variadic = false; |
| 2581 | bool has_template_params = false; |
| 2582 | unsigned type_quals = 0; |
| 2583 | std::vector<CompilerType> param_types; |
| 2584 | std::vector<clang::ParmVarDecl *> param_decls; |
| 2585 | DWARFDeclContext decl_ctx; |
| 2586 | StreamString sstr; |
| 2587 | |
| 2588 | die.GetDWARFDeclContext(decl_ctx); |
| 2589 | sstr << decl_ctx.GetQualifiedName(); |
| 2590 | |
| 2591 | clang::DeclContext *containing_decl_ctx = |
| 2592 | GetClangDeclContextContainingDIE(die, nullptr); |
| 2593 | ParseChildParameters(sc, containing_decl_ctx, die, true, is_static, |
| 2594 | is_variadic, has_template_params, param_types, |
| 2595 | param_decls, type_quals); |
| 2596 | sstr << "("; |
| 2597 | for (size_t i = 0; i < param_types.size(); i++) { |
| 2598 | if (i > 0) |
| 2599 | sstr << ", "; |
| 2600 | sstr << param_types[i].GetTypeName(); |
| 2601 | } |
| 2602 | if (is_variadic) |
| 2603 | sstr << ", ..."; |
| 2604 | sstr << ")"; |
| 2605 | if (type_quals & clang::Qualifiers::Const) |
| 2606 | sstr << " const"; |
| 2607 | |
| 2608 | func_name.SetValue(ConstString(sstr.GetString()), false); |
| 2609 | } else |
| 2610 | func_name.SetValue(ConstString(name), false); |
| 2611 | |
| 2612 | FunctionSP func_sp; |
| 2613 | std::unique_ptr<Declaration> decl_ap; |
| 2614 | if (decl_file != 0 || decl_line != 0 || decl_column != 0) |
| 2615 | decl_ap.reset(new Declaration( |
| 2616 | sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), |
| 2617 | decl_line, decl_column)); |
| 2618 | |
| 2619 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 2620 | // Supply the type _only_ if it has already been parsed |
| 2621 | Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE()); |
| 2622 | |
| 2623 | assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED)((func_type == __null || func_type != ((lldb_private::Type *) 1)) ? static_cast<void> (0) : __assert_fail ("func_type == NULL || func_type != DIE_IS_BEING_PARSED" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 2623, __PRETTY_FUNCTION__)); |
| 2624 | |
| 2625 | if (dwarf->FixupAddress(func_range.GetBaseAddress())) { |
| 2626 | const user_id_t func_user_id = die.GetID(); |
| 2627 | func_sp.reset(new Function(sc.comp_unit, |
| 2628 | func_user_id, // UserID is the DIE offset |
| 2629 | func_user_id, func_name, func_type, |
| 2630 | func_range)); // first address range |
| 2631 | |
| 2632 | if (func_sp.get() != NULL__null) { |
| 2633 | if (frame_base.IsValid()) |
| 2634 | func_sp->GetFrameBaseExpression() = frame_base; |
| 2635 | sc.comp_unit->AddFunction(func_sp); |
| 2636 | return func_sp.get(); |
| 2637 | } |
| 2638 | } |
| 2639 | } |
| 2640 | } |
| 2641 | return NULL__null; |
| 2642 | } |
| 2643 | |
| 2644 | bool DWARFASTParserClang::ParseChildMembers( |
| 2645 | const SymbolContext &sc, const DWARFDIE &parent_die, |
| 2646 | CompilerType &class_clang_type, const LanguageType class_language, |
| 2647 | std::vector<clang::CXXBaseSpecifier *> &base_classes, |
| 2648 | std::vector<int> &member_accessibilities, |
| 2649 | DWARFDIECollection &member_function_dies, |
| 2650 | DelayedPropertyList &delayed_properties, AccessType &default_accessibility, |
| 2651 | bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info) { |
| 2652 | if (!parent_die) |
| 2653 | return 0; |
| 2654 | |
| 2655 | // Get the parent byte size so we can verify any members will fit |
| 2656 | const uint64_t parent_byte_size = |
| 2657 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX(18446744073709551615UL)); |
| 2658 | const uint64_t parent_bit_size = |
| 2659 | parent_byte_size == UINT64_MAX(18446744073709551615UL) ? UINT64_MAX(18446744073709551615UL) : parent_byte_size * 8; |
| 2660 | |
| 2661 | uint32_t member_idx = 0; |
| 2662 | BitfieldInfo last_field_info; |
| 2663 | |
| 2664 | ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); |
| 2665 | ClangASTContext *ast = |
| 2666 | llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem()); |
| 2667 | if (ast == nullptr) |
| 2668 | return 0; |
| 2669 | |
| 2670 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
| 2671 | die = die.GetSibling()) { |
| 2672 | dw_tag_t tag = die.Tag(); |
| 2673 | |
| 2674 | switch (tag) { |
| 2675 | case DW_TAG_member: |
| 2676 | case DW_TAG_APPLE_property: { |
| 2677 | DWARFAttributes attributes; |
| 2678 | const size_t num_attributes = die.GetAttributes(attributes); |
| 2679 | if (num_attributes > 0) { |
| 2680 | Declaration decl; |
| 2681 | // DWARFExpression location; |
| 2682 | const char *name = NULL__null; |
| 2683 | const char *prop_name = NULL__null; |
| 2684 | const char *prop_getter_name = NULL__null; |
| 2685 | const char *prop_setter_name = NULL__null; |
| 2686 | uint32_t prop_attributes = 0; |
| 2687 | |
| 2688 | bool is_artificial = false; |
| 2689 | DWARFFormValue encoding_form; |
| 2690 | AccessType accessibility = eAccessNone; |
| 2691 | uint32_t member_byte_offset = |
| 2692 | (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX(4294967295U); |
| 2693 | size_t byte_size = 0; |
| 2694 | int64_t bit_offset = 0; |
| 2695 | uint64_t data_bit_offset = UINT64_MAX(18446744073709551615UL); |
| 2696 | size_t bit_size = 0; |
| 2697 | bool is_external = |
| 2698 | false; // On DW_TAG_members, this means the member is static |
| 2699 | uint32_t i; |
| 2700 | for (i = 0; i < num_attributes && !is_artificial; ++i) { |
| 2701 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| 2702 | DWARFFormValue form_value; |
| 2703 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 2704 | switch (attr) { |
| 2705 | case DW_AT_decl_file: |
| 2706 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 2707 | form_value.Unsigned())); |
| 2708 | break; |
| 2709 | case DW_AT_decl_line: |
| 2710 | decl.SetLine(form_value.Unsigned()); |
| 2711 | break; |
| 2712 | case DW_AT_decl_column: |
| 2713 | decl.SetColumn(form_value.Unsigned()); |
| 2714 | break; |
| 2715 | case DW_AT_name: |
| 2716 | name = form_value.AsCString(); |
| 2717 | break; |
| 2718 | case DW_AT_type: |
| 2719 | encoding_form = form_value; |
| 2720 | break; |
| 2721 | case DW_AT_bit_offset: |
| 2722 | bit_offset = form_value.Signed(); |
| 2723 | break; |
| 2724 | case DW_AT_bit_size: |
| 2725 | bit_size = form_value.Unsigned(); |
| 2726 | break; |
| 2727 | case DW_AT_byte_size: |
| 2728 | byte_size = form_value.Unsigned(); |
| 2729 | break; |
| 2730 | case DW_AT_data_bit_offset: |
| 2731 | data_bit_offset = form_value.Unsigned(); |
| 2732 | break; |
| 2733 | case DW_AT_data_member_location: |
| 2734 | if (form_value.BlockData()) { |
| 2735 | Value initialValue(0); |
| 2736 | Value memberOffset(0); |
| 2737 | const DWARFDataExtractor &debug_info_data = |
| 2738 | die.GetDWARF()->get_debug_info_data(); |
| 2739 | uint32_t block_length = form_value.Unsigned(); |
| 2740 | uint32_t block_offset = |
| 2741 | form_value.BlockData() - debug_info_data.GetDataStart(); |
| 2742 | if (DWARFExpression::Evaluate( |
| 2743 | nullptr, // ExecutionContext * |
| 2744 | nullptr, // RegisterContext * |
| 2745 | module_sp, debug_info_data, die.GetCU(), block_offset, |
| 2746 | block_length, eRegisterKindDWARF, &initialValue, |
| 2747 | nullptr, memberOffset, nullptr)) { |
| 2748 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
| 2749 | } |
| 2750 | } else { |
| 2751 | // With DWARF 3 and later, if the value is an integer constant, |
| 2752 | // this form value is the offset in bytes from the beginning |
| 2753 | // of the containing entity. |
| 2754 | member_byte_offset = form_value.Unsigned(); |
| 2755 | } |
| 2756 | break; |
| 2757 | |
| 2758 | case DW_AT_accessibility: |
| 2759 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
| 2760 | break; |
| 2761 | case DW_AT_artificial: |
| 2762 | is_artificial = form_value.Boolean(); |
| 2763 | break; |
| 2764 | case DW_AT_APPLE_property_name: |
| 2765 | prop_name = form_value.AsCString(); |
| 2766 | break; |
| 2767 | case DW_AT_APPLE_property_getter: |
| 2768 | prop_getter_name = form_value.AsCString(); |
| 2769 | break; |
| 2770 | case DW_AT_APPLE_property_setter: |
| 2771 | prop_setter_name = form_value.AsCString(); |
| 2772 | break; |
| 2773 | case DW_AT_APPLE_property_attribute: |
| 2774 | prop_attributes = form_value.Unsigned(); |
| 2775 | break; |
| 2776 | case DW_AT_external: |
| 2777 | is_external = form_value.Boolean(); |
| 2778 | break; |
| 2779 | |
| 2780 | default: |
| 2781 | case DW_AT_declaration: |
| 2782 | case DW_AT_description: |
| 2783 | case DW_AT_mutable: |
| 2784 | case DW_AT_visibility: |
| 2785 | case DW_AT_sibling: |
| 2786 | break; |
| 2787 | } |
| 2788 | } |
| 2789 | } |
| 2790 | |
| 2791 | if (prop_name) { |
| 2792 | ConstString fixed_getter; |
| 2793 | ConstString fixed_setter; |
| 2794 | |
| 2795 | // Check if the property getter/setter were provided as full |
| 2796 | // names. We want basenames, so we extract them. |
| 2797 | |
| 2798 | if (prop_getter_name && prop_getter_name[0] == '-') { |
| 2799 | ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true); |
| 2800 | prop_getter_name = prop_getter_method.GetSelector().GetCString(); |
| 2801 | } |
| 2802 | |
| 2803 | if (prop_setter_name && prop_setter_name[0] == '-') { |
| 2804 | ObjCLanguage::MethodName prop_setter_method(prop_setter_name, true); |
| 2805 | prop_setter_name = prop_setter_method.GetSelector().GetCString(); |
| 2806 | } |
| 2807 | |
| 2808 | // If the names haven't been provided, they need to be |
| 2809 | // filled in. |
| 2810 | |
| 2811 | if (!prop_getter_name) { |
| 2812 | prop_getter_name = prop_name; |
| 2813 | } |
| 2814 | if (!prop_setter_name && prop_name[0] && |
| 2815 | !(prop_attributes & DW_APPLE_PROPERTY_readonly)) { |
| 2816 | StreamString ss; |
| 2817 | |
| 2818 | ss.Printf("set%c%s:", toupper(prop_name[0]), &prop_name[1]); |
| 2819 | |
| 2820 | fixed_setter.SetString(ss.GetString()); |
| 2821 | prop_setter_name = fixed_setter.GetCString(); |
| 2822 | } |
| 2823 | } |
| 2824 | |
| 2825 | // Clang has a DWARF generation bug where sometimes it |
| 2826 | // represents fields that are references with bad byte size |
| 2827 | // and bit size/offset information such as: |
| 2828 | // |
| 2829 | // DW_AT_byte_size( 0x00 ) |
| 2830 | // DW_AT_bit_size( 0x40 ) |
| 2831 | // DW_AT_bit_offset( 0xffffffffffffffc0 ) |
| 2832 | // |
| 2833 | // So check the bit offset to make sure it is sane, and if |
| 2834 | // the values are not sane, remove them. If we don't do this |
| 2835 | // then we will end up with a crash if we try to use this |
| 2836 | // type in an expression when clang becomes unhappy with its |
| 2837 | // recycled debug info. |
| 2838 | |
| 2839 | if (byte_size == 0 && bit_offset < 0) { |
| 2840 | bit_size = 0; |
| 2841 | bit_offset = 0; |
| 2842 | } |
| 2843 | |
| 2844 | // FIXME: Make Clang ignore Objective-C accessibility for expressions |
| 2845 | if (class_language == eLanguageTypeObjC || |
| 2846 | class_language == eLanguageTypeObjC_plus_plus) |
| 2847 | accessibility = eAccessNone; |
| 2848 | |
| 2849 | if (member_idx == 0 && !is_artificial && name && |
| 2850 | (strstr(name, "_vptr$") == name)) { |
| 2851 | // Not all compilers will mark the vtable pointer |
| 2852 | // member as artificial (llvm-gcc). We can't have |
| 2853 | // the virtual members in our classes otherwise it |
| 2854 | // throws off all child offsets since we end up |
| 2855 | // having and extra pointer sized member in our |
| 2856 | // class layouts. |
| 2857 | is_artificial = true; |
| 2858 | } |
| 2859 | |
| 2860 | // Handle static members |
| 2861 | if (is_external && member_byte_offset == UINT32_MAX(4294967295U)) { |
| 2862 | Type *var_type = die.ResolveTypeUID(DIERef(encoding_form)); |
| 2863 | |
| 2864 | if (var_type) { |
| 2865 | if (accessibility == eAccessNone) |
| 2866 | accessibility = eAccessPublic; |
| 2867 | ClangASTContext::AddVariableToRecordType( |
| 2868 | class_clang_type, name, var_type->GetLayoutCompilerType(), |
| 2869 | accessibility); |
| 2870 | } |
| 2871 | break; |
| 2872 | } |
| 2873 | |
| 2874 | if (is_artificial == false) { |
| 2875 | Type *member_type = die.ResolveTypeUID(DIERef(encoding_form)); |
| 2876 | |
| 2877 | clang::FieldDecl *field_decl = NULL__null; |
| 2878 | if (tag == DW_TAG_member) { |
| 2879 | if (member_type) { |
| 2880 | if (accessibility == eAccessNone) |
| 2881 | accessibility = default_accessibility; |
| 2882 | member_accessibilities.push_back(accessibility); |
| 2883 | |
| 2884 | uint64_t field_bit_offset = |
| 2885 | (member_byte_offset == UINT32_MAX(4294967295U) ? 0 |
| 2886 | : (member_byte_offset * 8)); |
| 2887 | if (bit_size > 0) { |
| 2888 | |
| 2889 | BitfieldInfo this_field_info; |
| 2890 | this_field_info.bit_offset = field_bit_offset; |
| 2891 | this_field_info.bit_size = bit_size; |
| 2892 | |
| 2893 | ///////////////////////////////////////////////////////////// |
| 2894 | // How to locate a field given the DWARF debug information |
| 2895 | // |
| 2896 | // AT_byte_size indicates the size of the word in which the |
| 2897 | // bit offset must be interpreted. |
| 2898 | // |
| 2899 | // AT_data_member_location indicates the byte offset of the |
| 2900 | // word from the base address of the structure. |
| 2901 | // |
| 2902 | // AT_bit_offset indicates how many bits into the word |
| 2903 | // (according to the host endianness) the low-order bit of |
| 2904 | // the field starts. AT_bit_offset can be negative. |
| 2905 | // |
| 2906 | // AT_bit_size indicates the size of the field in bits. |
| 2907 | ///////////////////////////////////////////////////////////// |
| 2908 | |
| 2909 | if (data_bit_offset != UINT64_MAX(18446744073709551615UL)) { |
| 2910 | this_field_info.bit_offset = data_bit_offset; |
| 2911 | } else { |
| 2912 | if (byte_size == 0) |
| 2913 | byte_size = member_type->GetByteSize(); |
| 2914 | |
| 2915 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
| 2916 | if (objfile->GetByteOrder() == eByteOrderLittle) { |
| 2917 | this_field_info.bit_offset += byte_size * 8; |
| 2918 | this_field_info.bit_offset -= (bit_offset + bit_size); |
| 2919 | } else { |
| 2920 | this_field_info.bit_offset += bit_offset; |
| 2921 | } |
| 2922 | } |
| 2923 | |
| 2924 | if ((this_field_info.bit_offset >= parent_bit_size) || |
| 2925 | !last_field_info.NextBitfieldOffsetIsValid( |
| 2926 | this_field_info.bit_offset)) { |
| 2927 | ObjectFile *objfile = die.GetDWARF()->GetObjectFile(); |
| 2928 | objfile->GetModule()->ReportWarning( |
| 2929 | "0x%8.8" PRIx64"l" "x" ": %s bitfield named \"%s\" has invalid " |
| 2930 | "bit offset (0x%8.8" PRIx64"l" "x" |
| 2931 | ") member will be ignored. Please file a bug against the " |
| 2932 | "compiler and include the preprocessed output for %s\n", |
| 2933 | die.GetID(), DW_TAG_value_to_name(tag), name, |
| 2934 | this_field_info.bit_offset, |
| 2935 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
| 2936 | : "the source file"); |
| 2937 | this_field_info.Clear(); |
| 2938 | continue; |
| 2939 | } |
| 2940 | |
| 2941 | // Update the field bit offset we will report for layout |
| 2942 | field_bit_offset = this_field_info.bit_offset; |
| 2943 | |
| 2944 | // If the member to be emitted did not start on a character |
| 2945 | // boundary and there is |
| 2946 | // empty space between the last field and this one, then we need |
| 2947 | // to emit an |
| 2948 | // anonymous member filling up the space up to its start. There |
| 2949 | // are three cases |
| 2950 | // here: |
| 2951 | // |
| 2952 | // 1 If the previous member ended on a character boundary, then |
| 2953 | // we can emit an |
| 2954 | // anonymous member starting at the most recent character |
| 2955 | // boundary. |
| 2956 | // |
| 2957 | // 2 If the previous member did not end on a character boundary |
| 2958 | // and the distance |
| 2959 | // from the end of the previous member to the current member |
| 2960 | // is less than a |
| 2961 | // word width, then we can emit an anonymous member starting |
| 2962 | // right after the |
| 2963 | // previous member and right before this member. |
| 2964 | // |
| 2965 | // 3 If the previous member did not end on a character boundary |
| 2966 | // and the distance |
| 2967 | // from the end of the previous member to the current member |
| 2968 | // is greater than |
| 2969 | // or equal a word width, then we act as in Case 1. |
| 2970 | |
| 2971 | const uint64_t character_width = 8; |
| 2972 | const uint64_t word_width = 32; |
| 2973 | |
| 2974 | // Objective-C has invalid DW_AT_bit_offset values in older |
| 2975 | // versions |
| 2976 | // of clang, so we have to be careful and only insert unnamed |
| 2977 | // bitfields |
| 2978 | // if we have a new enough clang. |
| 2979 | bool detect_unnamed_bitfields = true; |
| 2980 | |
| 2981 | if (class_language == eLanguageTypeObjC || |
| 2982 | class_language == eLanguageTypeObjC_plus_plus) |
| 2983 | detect_unnamed_bitfields = |
| 2984 | die.GetCU()->Supports_unnamed_objc_bitfields(); |
| 2985 | |
| 2986 | if (detect_unnamed_bitfields) { |
| 2987 | BitfieldInfo anon_field_info; |
| 2988 | |
| 2989 | if ((this_field_info.bit_offset % character_width) != |
| 2990 | 0) // not char aligned |
| 2991 | { |
| 2992 | uint64_t last_field_end = 0; |
| 2993 | |
| 2994 | if (last_field_info.IsValid()) |
| 2995 | last_field_end = |
| 2996 | last_field_info.bit_offset + last_field_info.bit_size; |
| 2997 | |
| 2998 | if (this_field_info.bit_offset != last_field_end) { |
| 2999 | if (((last_field_end % character_width) == 0) || // case 1 |
| 3000 | (this_field_info.bit_offset - last_field_end >= |
| 3001 | word_width)) // case 3 |
| 3002 | { |
| 3003 | anon_field_info.bit_size = |
| 3004 | this_field_info.bit_offset % character_width; |
| 3005 | anon_field_info.bit_offset = |
| 3006 | this_field_info.bit_offset - |
| 3007 | anon_field_info.bit_size; |
| 3008 | } else // case 2 |
| 3009 | { |
| 3010 | anon_field_info.bit_size = |
| 3011 | this_field_info.bit_offset - last_field_end; |
| 3012 | anon_field_info.bit_offset = last_field_end; |
| 3013 | } |
| 3014 | } |
| 3015 | } |
| 3016 | |
| 3017 | if (anon_field_info.IsValid()) { |
| 3018 | clang::FieldDecl *unnamed_bitfield_decl = |
| 3019 | ClangASTContext::AddFieldToRecordType( |
| 3020 | class_clang_type, NULL__null, |
| 3021 | m_ast.GetBuiltinTypeForEncodingAndBitSize( |
| 3022 | eEncodingSint, word_width), |
| 3023 | accessibility, anon_field_info.bit_size); |
| 3024 | |
| 3025 | layout_info.field_offsets.insert(std::make_pair( |
| 3026 | unnamed_bitfield_decl, anon_field_info.bit_offset)); |
| 3027 | } |
| 3028 | } |
| 3029 | last_field_info = this_field_info; |
| 3030 | } else { |
| 3031 | last_field_info.Clear(); |
| 3032 | } |
| 3033 | |
| 3034 | CompilerType member_clang_type = |
| 3035 | member_type->GetLayoutCompilerType(); |
| 3036 | if (!member_clang_type.IsCompleteType()) |
| 3037 | member_clang_type.GetCompleteType(); |
| 3038 | |
| 3039 | { |
| 3040 | // Older versions of clang emit array[0] and array[1] in the |
| 3041 | // same way (<rdar://problem/12566646>). |
| 3042 | // If the current field is at the end of the structure, then |
| 3043 | // there is definitely no room for extra |
| 3044 | // elements and we override the type to array[0]. |
| 3045 | |
| 3046 | CompilerType member_array_element_type; |
| 3047 | uint64_t member_array_size; |
| 3048 | bool member_array_is_incomplete; |
| 3049 | |
| 3050 | if (member_clang_type.IsArrayType( |
| 3051 | &member_array_element_type, &member_array_size, |
| 3052 | &member_array_is_incomplete) && |
| 3053 | !member_array_is_incomplete) { |
| 3054 | uint64_t parent_byte_size = |
| 3055 | parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, |
| 3056 | UINT64_MAX(18446744073709551615UL)); |
| 3057 | |
| 3058 | if (member_byte_offset >= parent_byte_size) { |
| 3059 | if (member_array_size != 1 && |
| 3060 | (member_array_size != 0 || |
| 3061 | member_byte_offset > parent_byte_size)) { |
| 3062 | module_sp->ReportError( |
| 3063 | "0x%8.8" PRIx64"l" "x" |
| 3064 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
| 3065 | " which extends beyond the bounds of 0x%8.8" PRIx64"l" "x", |
| 3066 | die.GetID(), name, encoding_form.Reference(), |
| 3067 | parent_die.GetID()); |
| 3068 | } |
| 3069 | |
| 3070 | member_clang_type = m_ast.CreateArrayType( |
| 3071 | member_array_element_type, 0, false); |
| 3072 | } |
| 3073 | } |
| 3074 | } |
| 3075 | |
| 3076 | if (ClangASTContext::IsCXXClassType(member_clang_type) && |
| 3077 | member_clang_type.GetCompleteType() == false) { |
| 3078 | if (die.GetCU()->GetProducer() == |
| 3079 | DWARFCompileUnit::eProducerClang) |
| 3080 | module_sp->ReportError( |
| 3081 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
| 3082 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
| 3083 | "complete definition.\nTry compiling the source file " |
| 3084 | "with -fno-limit-debug-info", |
| 3085 | parent_die.GetOffset(), parent_die.GetName(), |
| 3086 | die.GetOffset(), name); |
| 3087 | else |
| 3088 | module_sp->ReportError( |
| 3089 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
| 3090 | "0x%8.8x (%s) whose type is a forward declaration, not a " |
| 3091 | "complete definition.\nPlease file a bug against the " |
| 3092 | "compiler and include the preprocessed output for %s", |
| 3093 | parent_die.GetOffset(), parent_die.GetName(), |
| 3094 | die.GetOffset(), name, |
| 3095 | sc.comp_unit ? sc.comp_unit->GetPath().c_str() |
| 3096 | : "the source file"); |
| 3097 | // We have no choice other than to pretend that the member class |
| 3098 | // is complete. If we don't do this, clang will crash when |
| 3099 | // trying |
| 3100 | // to layout the class. Since we provide layout assistance, all |
| 3101 | // ivars in this class and other classes will be fine, this is |
| 3102 | // the best we can do short of crashing. |
| 3103 | if (ClangASTContext::StartTagDeclarationDefinition( |
| 3104 | member_clang_type)) { |
| 3105 | ClangASTContext::CompleteTagDeclarationDefinition( |
| 3106 | member_clang_type); |
| 3107 | } else { |
| 3108 | module_sp->ReportError( |
| 3109 | "DWARF DIE at 0x%8.8x (class %s) has a member variable " |
| 3110 | "0x%8.8x (%s) whose type claims to be a C++ class but we " |
| 3111 | "were not able to start its definition.\nPlease file a " |
| 3112 | "bug and attach the file at the start of this error " |
| 3113 | "message", |
| 3114 | parent_die.GetOffset(), parent_die.GetName(), |
| 3115 | die.GetOffset(), name); |
| 3116 | } |
| 3117 | } |
| 3118 | |
| 3119 | field_decl = ClangASTContext::AddFieldToRecordType( |
| 3120 | class_clang_type, name, member_clang_type, accessibility, |
| 3121 | bit_size); |
| 3122 | |
| 3123 | m_ast.SetMetadataAsUserID(field_decl, die.GetID()); |
| 3124 | |
| 3125 | layout_info.field_offsets.insert( |
| 3126 | std::make_pair(field_decl, field_bit_offset)); |
| 3127 | } else { |
| 3128 | if (name) |
| 3129 | module_sp->ReportError( |
| 3130 | "0x%8.8" PRIx64"l" "x" |
| 3131 | ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64"l" "x" |
| 3132 | " which was unable to be parsed", |
| 3133 | die.GetID(), name, encoding_form.Reference()); |
| 3134 | else |
| 3135 | module_sp->ReportError( |
| 3136 | "0x%8.8" PRIx64"l" "x" |
| 3137 | ": DW_TAG_member refers to type 0x%8.8" PRIx64"l" "x" |
| 3138 | " which was unable to be parsed", |
| 3139 | die.GetID(), encoding_form.Reference()); |
| 3140 | } |
| 3141 | } |
| 3142 | |
| 3143 | if (prop_name != NULL__null && member_type) { |
| 3144 | clang::ObjCIvarDecl *ivar_decl = NULL__null; |
| 3145 | |
| 3146 | if (field_decl) { |
| 3147 | ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); |
| 3148 | assert(ivar_decl != NULL)((ivar_decl != __null) ? static_cast<void> (0) : __assert_fail ("ivar_decl != NULL", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3148, __PRETTY_FUNCTION__)); |
| 3149 | } |
| 3150 | |
| 3151 | ClangASTMetadata metadata; |
| 3152 | metadata.SetUserID(die.GetID()); |
| 3153 | delayed_properties.push_back(DelayedAddObjCClassProperty( |
| 3154 | class_clang_type, prop_name, |
| 3155 | member_type->GetLayoutCompilerType(), ivar_decl, |
| 3156 | prop_setter_name, prop_getter_name, prop_attributes, |
| 3157 | &metadata)); |
| 3158 | |
| 3159 | if (ivar_decl) |
| 3160 | m_ast.SetMetadataAsUserID(ivar_decl, die.GetID()); |
| 3161 | } |
| 3162 | } |
| 3163 | } |
| 3164 | ++member_idx; |
| 3165 | } break; |
| 3166 | |
| 3167 | case DW_TAG_subprogram: |
| 3168 | // Let the type parsing code handle this one for us. |
| 3169 | member_function_dies.Append(die); |
| 3170 | break; |
| 3171 | |
| 3172 | case DW_TAG_inheritance: { |
| 3173 | is_a_class = true; |
| 3174 | if (default_accessibility == eAccessNone) |
| 3175 | default_accessibility = eAccessPrivate; |
| 3176 | // TODO: implement DW_TAG_inheritance type parsing |
| 3177 | DWARFAttributes attributes; |
| 3178 | const size_t num_attributes = die.GetAttributes(attributes); |
| 3179 | if (num_attributes > 0) { |
| 3180 | Declaration decl; |
| 3181 | DWARFExpression location(die.GetCU()); |
| 3182 | DWARFFormValue encoding_form; |
| 3183 | AccessType accessibility = default_accessibility; |
| 3184 | bool is_virtual = false; |
| 3185 | bool is_base_of_class = true; |
| 3186 | off_t member_byte_offset = 0; |
| 3187 | uint32_t i; |
| 3188 | for (i = 0; i < num_attributes; ++i) { |
| 3189 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| 3190 | DWARFFormValue form_value; |
| 3191 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 3192 | switch (attr) { |
| 3193 | case DW_AT_decl_file: |
| 3194 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 3195 | form_value.Unsigned())); |
| 3196 | break; |
| 3197 | case DW_AT_decl_line: |
| 3198 | decl.SetLine(form_value.Unsigned()); |
| 3199 | break; |
| 3200 | case DW_AT_decl_column: |
| 3201 | decl.SetColumn(form_value.Unsigned()); |
| 3202 | break; |
| 3203 | case DW_AT_type: |
| 3204 | encoding_form = form_value; |
| 3205 | break; |
| 3206 | case DW_AT_data_member_location: |
| 3207 | if (form_value.BlockData()) { |
| 3208 | Value initialValue(0); |
| 3209 | Value memberOffset(0); |
| 3210 | const DWARFDataExtractor &debug_info_data = |
| 3211 | die.GetDWARF()->get_debug_info_data(); |
| 3212 | uint32_t block_length = form_value.Unsigned(); |
| 3213 | uint32_t block_offset = |
| 3214 | form_value.BlockData() - debug_info_data.GetDataStart(); |
| 3215 | if (DWARFExpression::Evaluate(nullptr, nullptr, module_sp, |
| 3216 | debug_info_data, die.GetCU(), |
| 3217 | block_offset, block_length, |
| 3218 | eRegisterKindDWARF, &initialValue, |
| 3219 | nullptr, memberOffset, nullptr)) { |
| 3220 | member_byte_offset = memberOffset.ResolveValue(NULL__null).UInt(); |
| 3221 | } |
| 3222 | } else { |
| 3223 | // With DWARF 3 and later, if the value is an integer constant, |
| 3224 | // this form value is the offset in bytes from the beginning |
| 3225 | // of the containing entity. |
| 3226 | member_byte_offset = form_value.Unsigned(); |
| 3227 | } |
| 3228 | break; |
| 3229 | |
| 3230 | case DW_AT_accessibility: |
| 3231 | accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
| 3232 | break; |
| 3233 | |
| 3234 | case DW_AT_virtuality: |
| 3235 | is_virtual = form_value.Boolean(); |
| 3236 | break; |
| 3237 | |
| 3238 | case DW_AT_sibling: |
| 3239 | break; |
| 3240 | |
| 3241 | default: |
| 3242 | break; |
| 3243 | } |
| 3244 | } |
| 3245 | } |
| 3246 | |
| 3247 | Type *base_class_type = die.ResolveTypeUID(DIERef(encoding_form)); |
| 3248 | if (base_class_type == NULL__null) { |
| 3249 | module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to " |
| 3250 | "resolve the base class at 0x%8.8" PRIx64"l" "x" |
| 3251 | " from enclosing type 0x%8.8x. \nPlease file " |
| 3252 | "a bug and attach the file at the start of " |
| 3253 | "this error message", |
| 3254 | die.GetOffset(), encoding_form.Reference(), |
| 3255 | parent_die.GetOffset()); |
| 3256 | break; |
| 3257 | } |
| 3258 | |
| 3259 | CompilerType base_class_clang_type = |
| 3260 | base_class_type->GetFullCompilerType(); |
| 3261 | assert(base_class_clang_type)((base_class_clang_type) ? static_cast<void> (0) : __assert_fail ("base_class_clang_type", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3261, __PRETTY_FUNCTION__)); |
| 3262 | if (class_language == eLanguageTypeObjC) { |
| 3263 | ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); |
| 3264 | } else { |
| 3265 | base_classes.push_back(ast->CreateBaseClassSpecifier( |
| 3266 | base_class_clang_type.GetOpaqueQualType(), accessibility, |
| 3267 | is_virtual, is_base_of_class)); |
| 3268 | |
| 3269 | if (is_virtual) { |
| 3270 | // Do not specify any offset for virtual inheritance. The DWARF |
| 3271 | // produced by clang doesn't |
| 3272 | // give us a constant offset, but gives us a DWARF expressions that |
| 3273 | // requires an actual object |
| 3274 | // in memory. the DW_AT_data_member_location for a virtual base |
| 3275 | // class looks like: |
| 3276 | // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, |
| 3277 | // DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, |
| 3278 | // DW_OP_plus ) |
| 3279 | // Given this, there is really no valid response we can give to |
| 3280 | // clang for virtual base |
| 3281 | // class offsets, and this should eventually be removed from |
| 3282 | // LayoutRecordType() in the external |
| 3283 | // AST source in clang. |
| 3284 | } else { |
| 3285 | layout_info.base_offsets.insert(std::make_pair( |
| 3286 | ast->GetAsCXXRecordDecl( |
| 3287 | base_class_clang_type.GetOpaqueQualType()), |
| 3288 | clang::CharUnits::fromQuantity(member_byte_offset))); |
| 3289 | } |
| 3290 | } |
| 3291 | } |
| 3292 | } break; |
| 3293 | |
| 3294 | default: |
| 3295 | break; |
| 3296 | } |
| 3297 | } |
| 3298 | |
| 3299 | return true; |
| 3300 | } |
| 3301 | |
| 3302 | size_t DWARFASTParserClang::ParseChildParameters( |
| 3303 | const SymbolContext &sc, clang::DeclContext *containing_decl_ctx, |
| 3304 | const DWARFDIE &parent_die, bool skip_artificial, bool &is_static, |
| 3305 | bool &is_variadic, bool &has_template_params, |
| 3306 | std::vector<CompilerType> &function_param_types, |
| 3307 | std::vector<clang::ParmVarDecl *> &function_param_decls, |
| 3308 | unsigned &type_quals) { |
| 3309 | if (!parent_die) |
| 3310 | return 0; |
| 3311 | |
| 3312 | size_t arg_idx = 0; |
| 3313 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
| 3314 | die = die.GetSibling()) { |
| 3315 | const dw_tag_t tag = die.Tag(); |
| 3316 | switch (tag) { |
| 3317 | case DW_TAG_formal_parameter: { |
| 3318 | DWARFAttributes attributes; |
| 3319 | const size_t num_attributes = die.GetAttributes(attributes); |
| 3320 | if (num_attributes > 0) { |
| 3321 | const char *name = NULL__null; |
| 3322 | Declaration decl; |
| 3323 | DWARFFormValue param_type_die_form; |
| 3324 | bool is_artificial = false; |
| 3325 | // one of None, Auto, Register, Extern, Static, PrivateExtern |
| 3326 | |
| 3327 | clang::StorageClass storage = clang::SC_None; |
| 3328 | uint32_t i; |
| 3329 | for (i = 0; i < num_attributes; ++i) { |
| 3330 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| 3331 | DWARFFormValue form_value; |
| 3332 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 3333 | switch (attr) { |
| 3334 | case DW_AT_decl_file: |
| 3335 | decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex( |
| 3336 | form_value.Unsigned())); |
| 3337 | break; |
| 3338 | case DW_AT_decl_line: |
| 3339 | decl.SetLine(form_value.Unsigned()); |
| 3340 | break; |
| 3341 | case DW_AT_decl_column: |
| 3342 | decl.SetColumn(form_value.Unsigned()); |
| 3343 | break; |
| 3344 | case DW_AT_name: |
| 3345 | name = form_value.AsCString(); |
| 3346 | break; |
| 3347 | case DW_AT_type: |
| 3348 | param_type_die_form = form_value; |
| 3349 | break; |
| 3350 | case DW_AT_artificial: |
| 3351 | is_artificial = form_value.Boolean(); |
| 3352 | break; |
| 3353 | case DW_AT_location: |
| 3354 | // if (form_value.BlockData()) |
| 3355 | // { |
| 3356 | // const DWARFDataExtractor& |
| 3357 | // debug_info_data = debug_info(); |
| 3358 | // uint32_t block_length = |
| 3359 | // form_value.Unsigned(); |
| 3360 | // DWARFDataExtractor |
| 3361 | // location(debug_info_data, |
| 3362 | // form_value.BlockData() - |
| 3363 | // debug_info_data.GetDataStart(), |
| 3364 | // block_length); |
| 3365 | // } |
| 3366 | // else |
| 3367 | // { |
| 3368 | // } |
| 3369 | // break; |
| 3370 | case DW_AT_const_value: |
| 3371 | case DW_AT_default_value: |
| 3372 | case DW_AT_description: |
| 3373 | case DW_AT_endianity: |
| 3374 | case DW_AT_is_optional: |
| 3375 | case DW_AT_segment: |
| 3376 | case DW_AT_variable_parameter: |
| 3377 | default: |
| 3378 | case DW_AT_abstract_origin: |
| 3379 | case DW_AT_sibling: |
| 3380 | break; |
| 3381 | } |
| 3382 | } |
| 3383 | } |
| 3384 | |
| 3385 | bool skip = false; |
| 3386 | if (skip_artificial) { |
| 3387 | if (is_artificial) { |
| 3388 | // In order to determine if a C++ member function is |
| 3389 | // "const" we have to look at the const-ness of "this"... |
| 3390 | // Ugly, but that |
| 3391 | if (arg_idx == 0) { |
| 3392 | if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) { |
| 3393 | // Often times compilers omit the "this" name for the |
| 3394 | // specification DIEs, so we can't rely upon the name |
| 3395 | // being in the formal parameter DIE... |
| 3396 | if (name == NULL__null || ::strcmp(name, "this") == 0) { |
| 3397 | Type *this_type = |
| 3398 | die.ResolveTypeUID(DIERef(param_type_die_form)); |
| 3399 | if (this_type) { |
| 3400 | uint32_t encoding_mask = this_type->GetEncodingMask(); |
| 3401 | if (encoding_mask & Type::eEncodingIsPointerUID) { |
| 3402 | is_static = false; |
| 3403 | |
| 3404 | if (encoding_mask & (1u << Type::eEncodingIsConstUID)) |
| 3405 | type_quals |= clang::Qualifiers::Const; |
| 3406 | if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) |
| 3407 | type_quals |= clang::Qualifiers::Volatile; |
| 3408 | } |
| 3409 | } |
| 3410 | } |
| 3411 | } |
| 3412 | } |
| 3413 | skip = true; |
| 3414 | } else { |
| 3415 | |
| 3416 | // HACK: Objective C formal parameters "self" and "_cmd" |
| 3417 | // are not marked as artificial in the DWARF... |
| 3418 | CompileUnit *comp_unit = die.GetLLDBCompileUnit(); |
| 3419 | if (comp_unit) { |
| 3420 | switch (comp_unit->GetLanguage()) { |
| 3421 | case eLanguageTypeObjC: |
| 3422 | case eLanguageTypeObjC_plus_plus: |
| 3423 | if (name && name[0] && |
| 3424 | (strcmp(name, "self") == 0 || strcmp(name, "_cmd") == 0)) |
| 3425 | skip = true; |
| 3426 | break; |
| 3427 | default: |
| 3428 | break; |
| 3429 | } |
| 3430 | } |
| 3431 | } |
| 3432 | } |
| 3433 | |
| 3434 | if (!skip) { |
| 3435 | Type *type = die.ResolveTypeUID(DIERef(param_type_die_form)); |
| 3436 | if (type) { |
| 3437 | function_param_types.push_back(type->GetForwardCompilerType()); |
| 3438 | |
| 3439 | clang::ParmVarDecl *param_var_decl = |
| 3440 | m_ast.CreateParameterDeclaration( |
| 3441 | name, type->GetForwardCompilerType(), storage); |
| 3442 | assert(param_var_decl)((param_var_decl) ? static_cast<void> (0) : __assert_fail ("param_var_decl", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3442, __PRETTY_FUNCTION__)); |
| 3443 | function_param_decls.push_back(param_var_decl); |
| 3444 | |
| 3445 | m_ast.SetMetadataAsUserID(param_var_decl, die.GetID()); |
| 3446 | } |
| 3447 | } |
| 3448 | } |
| 3449 | arg_idx++; |
| 3450 | } break; |
| 3451 | |
| 3452 | case DW_TAG_unspecified_parameters: |
| 3453 | is_variadic = true; |
| 3454 | break; |
| 3455 | |
| 3456 | case DW_TAG_template_type_parameter: |
| 3457 | case DW_TAG_template_value_parameter: |
| 3458 | case DW_TAG_GNU_template_parameter_pack: |
| 3459 | // The one caller of this was never using the template_param_infos, |
| 3460 | // and the local variable was taking up a large amount of stack space |
| 3461 | // in SymbolFileDWARF::ParseType() so this was removed. If we ever need |
| 3462 | // the template params back, we can add them back. |
| 3463 | // ParseTemplateDIE (dwarf_cu, die, template_param_infos); |
| 3464 | has_template_params = true; |
| 3465 | break; |
| 3466 | |
| 3467 | default: |
| 3468 | break; |
| 3469 | } |
| 3470 | } |
| 3471 | return arg_idx; |
| 3472 | } |
| 3473 | |
| 3474 | void DWARFASTParserClang::ParseChildArrayInfo( |
| 3475 | const SymbolContext &sc, const DWARFDIE &parent_die, int64_t &first_index, |
| 3476 | std::vector<uint64_t> &element_orders, uint32_t &byte_stride, |
| 3477 | uint32_t &bit_stride) { |
| 3478 | if (!parent_die) |
| 3479 | return; |
| 3480 | |
| 3481 | for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); |
| 3482 | die = die.GetSibling()) { |
| 3483 | const dw_tag_t tag = die.Tag(); |
| 3484 | switch (tag) { |
| 3485 | case DW_TAG_subrange_type: { |
| 3486 | DWARFAttributes attributes; |
| 3487 | const size_t num_child_attributes = die.GetAttributes(attributes); |
| 3488 | if (num_child_attributes > 0) { |
| 3489 | uint64_t num_elements = 0; |
| 3490 | uint64_t lower_bound = 0; |
| 3491 | uint64_t upper_bound = 0; |
| 3492 | bool upper_bound_valid = false; |
| 3493 | uint32_t i; |
| 3494 | for (i = 0; i < num_child_attributes; ++i) { |
| 3495 | const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| 3496 | DWARFFormValue form_value; |
| 3497 | if (attributes.ExtractFormValueAtIndex(i, form_value)) { |
| 3498 | switch (attr) { |
| 3499 | case DW_AT_name: |
| 3500 | break; |
| 3501 | |
| 3502 | case DW_AT_count: |
| 3503 | num_elements = form_value.Unsigned(); |
| 3504 | break; |
| 3505 | |
| 3506 | case DW_AT_bit_stride: |
| 3507 | bit_stride = form_value.Unsigned(); |
| 3508 | break; |
| 3509 | |
| 3510 | case DW_AT_byte_stride: |
| 3511 | byte_stride = form_value.Unsigned(); |
| 3512 | break; |
| 3513 | |
| 3514 | case DW_AT_lower_bound: |
| 3515 | lower_bound = form_value.Unsigned(); |
| 3516 | break; |
| 3517 | |
| 3518 | case DW_AT_upper_bound: |
| 3519 | upper_bound_valid = true; |
| 3520 | upper_bound = form_value.Unsigned(); |
| 3521 | break; |
| 3522 | |
| 3523 | default: |
| 3524 | case DW_AT_abstract_origin: |
| 3525 | case DW_AT_accessibility: |
| 3526 | case DW_AT_allocated: |
| 3527 | case DW_AT_associated: |
| 3528 | case DW_AT_data_location: |
| 3529 | case DW_AT_declaration: |
| 3530 | case DW_AT_description: |
| 3531 | case DW_AT_sibling: |
| 3532 | case DW_AT_threads_scaled: |
| 3533 | case DW_AT_type: |
| 3534 | case DW_AT_visibility: |
| 3535 | break; |
| 3536 | } |
| 3537 | } |
| 3538 | } |
| 3539 | |
| 3540 | if (num_elements == 0) { |
| 3541 | if (upper_bound_valid && upper_bound >= lower_bound) |
| 3542 | num_elements = upper_bound - lower_bound + 1; |
| 3543 | } |
| 3544 | |
| 3545 | element_orders.push_back(num_elements); |
| 3546 | } |
| 3547 | } break; |
| 3548 | } |
| 3549 | } |
| 3550 | } |
| 3551 | |
| 3552 | Type *DWARFASTParserClang::GetTypeForDIE(const DWARFDIE &die) { |
| 3553 | if (die) { |
| 3554 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 3555 | DWARFAttributes attributes; |
| 3556 | const size_t num_attributes = die.GetAttributes(attributes); |
| 3557 | if (num_attributes > 0) { |
| 3558 | DWARFFormValue type_die_form; |
| 3559 | for (size_t i = 0; i < num_attributes; ++i) { |
| 3560 | dw_attr_t attr = attributes.AttributeAtIndex(i); |
| 3561 | DWARFFormValue form_value; |
| 3562 | |
| 3563 | if (attr == DW_AT_type && |
| 3564 | attributes.ExtractFormValueAtIndex(i, form_value)) |
| 3565 | return dwarf->ResolveTypeUID(dwarf->GetDIE(DIERef(form_value)), true); |
| 3566 | } |
| 3567 | } |
| 3568 | } |
| 3569 | |
| 3570 | return nullptr; |
| 3571 | } |
| 3572 | |
| 3573 | clang::Decl *DWARFASTParserClang::GetClangDeclForDIE(const DWARFDIE &die) { |
| 3574 | if (!die) |
| 3575 | return nullptr; |
| 3576 | |
| 3577 | switch (die.Tag()) { |
| 3578 | case DW_TAG_variable: |
| 3579 | case DW_TAG_constant: |
| 3580 | case DW_TAG_formal_parameter: |
| 3581 | case DW_TAG_imported_declaration: |
| 3582 | case DW_TAG_imported_module: |
| 3583 | break; |
| 3584 | default: |
| 3585 | return nullptr; |
| 3586 | } |
| 3587 | |
| 3588 | DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE()); |
| 3589 | if (cache_pos != m_die_to_decl.end()) |
| 3590 | return cache_pos->second; |
| 3591 | |
| 3592 | if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification)) { |
| 3593 | clang::Decl *decl = GetClangDeclForDIE(spec_die); |
| 3594 | m_die_to_decl[die.GetDIE()] = decl; |
| 3595 | m_decl_to_die[decl].insert(die.GetDIE()); |
| 3596 | return decl; |
| 3597 | } |
| 3598 | |
| 3599 | if (DWARFDIE abstract_origin_die = |
| 3600 | die.GetReferencedDIE(DW_AT_abstract_origin)) { |
| 3601 | clang::Decl *decl = GetClangDeclForDIE(abstract_origin_die); |
| 3602 | m_die_to_decl[die.GetDIE()] = decl; |
| 3603 | m_decl_to_die[decl].insert(die.GetDIE()); |
| 3604 | return decl; |
| 3605 | } |
| 3606 | |
| 3607 | clang::Decl *decl = nullptr; |
| 3608 | switch (die.Tag()) { |
| 3609 | case DW_TAG_variable: |
| 3610 | case DW_TAG_constant: |
| 3611 | case DW_TAG_formal_parameter: { |
| 3612 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 3613 | Type *type = GetTypeForDIE(die); |
| 3614 | if (dwarf && type) { |
| 3615 | const char *name = die.GetName(); |
| 3616 | clang::DeclContext *decl_context = |
| 3617 | ClangASTContext::DeclContextGetAsDeclContext( |
| 3618 | dwarf->GetDeclContextContainingUID(die.GetID())); |
| 3619 | decl = m_ast.CreateVariableDeclaration( |
| 3620 | decl_context, name, |
| 3621 | ClangUtil::GetQualType(type->GetForwardCompilerType())); |
| 3622 | } |
| 3623 | break; |
| 3624 | } |
| 3625 | case DW_TAG_imported_declaration: { |
| 3626 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 3627 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
| 3628 | if (imported_uid) { |
| 3629 | CompilerDecl imported_decl = imported_uid.GetDecl(); |
| 3630 | if (imported_decl) { |
| 3631 | clang::DeclContext *decl_context = |
| 3632 | ClangASTContext::DeclContextGetAsDeclContext( |
| 3633 | dwarf->GetDeclContextContainingUID(die.GetID())); |
| 3634 | if (clang::NamedDecl *clang_imported_decl = |
| 3635 | llvm::dyn_cast<clang::NamedDecl>( |
| 3636 | (clang::Decl *)imported_decl.GetOpaqueDecl())) |
| 3637 | decl = |
| 3638 | m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl); |
| 3639 | } |
| 3640 | } |
| 3641 | break; |
| 3642 | } |
| 3643 | case DW_TAG_imported_module: { |
| 3644 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 3645 | DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import); |
| 3646 | |
| 3647 | if (imported_uid) { |
| 3648 | CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext(); |
| 3649 | if (imported_decl_ctx) { |
| 3650 | clang::DeclContext *decl_context = |
| 3651 | ClangASTContext::DeclContextGetAsDeclContext( |
| 3652 | dwarf->GetDeclContextContainingUID(die.GetID())); |
| 3653 | if (clang::NamespaceDecl *ns_decl = |
| 3654 | ClangASTContext::DeclContextGetAsNamespaceDecl( |
| 3655 | imported_decl_ctx)) |
| 3656 | decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl); |
| 3657 | } |
| 3658 | } |
| 3659 | break; |
| 3660 | } |
| 3661 | default: |
| 3662 | break; |
| 3663 | } |
| 3664 | |
| 3665 | m_die_to_decl[die.GetDIE()] = decl; |
| 3666 | m_decl_to_die[decl].insert(die.GetDIE()); |
| 3667 | |
| 3668 | return decl; |
| 3669 | } |
| 3670 | |
| 3671 | clang::DeclContext * |
| 3672 | DWARFASTParserClang::GetClangDeclContextForDIE(const DWARFDIE &die) { |
| 3673 | if (die) { |
| 3674 | clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE(die); |
| 3675 | if (decl_ctx) |
| 3676 | return decl_ctx; |
| 3677 | |
| 3678 | bool try_parsing_type = true; |
| 3679 | switch (die.Tag()) { |
| 3680 | case DW_TAG_compile_unit: |
| 3681 | decl_ctx = m_ast.GetTranslationUnitDecl(); |
| 3682 | try_parsing_type = false; |
| 3683 | break; |
| 3684 | |
| 3685 | case DW_TAG_namespace: |
| 3686 | decl_ctx = ResolveNamespaceDIE(die); |
| 3687 | try_parsing_type = false; |
| 3688 | break; |
| 3689 | |
| 3690 | case DW_TAG_lexical_block: |
| 3691 | decl_ctx = GetDeclContextForBlock(die); |
| 3692 | try_parsing_type = false; |
| 3693 | break; |
| 3694 | |
| 3695 | default: |
| 3696 | break; |
| 3697 | } |
| 3698 | |
| 3699 | if (decl_ctx == nullptr && try_parsing_type) { |
| 3700 | Type *type = die.GetDWARF()->ResolveType(die); |
| 3701 | if (type) |
| 3702 | decl_ctx = GetCachedClangDeclContextForDIE(die); |
| 3703 | } |
| 3704 | |
| 3705 | if (decl_ctx) { |
| 3706 | LinkDeclContextToDIE(decl_ctx, die); |
| 3707 | return decl_ctx; |
| 3708 | } |
| 3709 | } |
| 3710 | return nullptr; |
| 3711 | } |
| 3712 | |
| 3713 | static bool IsSubroutine(const DWARFDIE &die) { |
| 3714 | switch (die.Tag()) { |
| 3715 | case DW_TAG_subprogram: |
| 3716 | case DW_TAG_inlined_subroutine: |
| 3717 | return true; |
| 3718 | default: |
| 3719 | return false; |
| 3720 | } |
| 3721 | } |
| 3722 | |
| 3723 | static DWARFDIE GetContainingFunctionWithAbstractOrigin(const DWARFDIE &die) { |
| 3724 | for (DWARFDIE candidate = die; candidate; candidate = candidate.GetParent()) { |
| 3725 | if (IsSubroutine(candidate)) { |
| 3726 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
| 3727 | return candidate; |
| 3728 | } else { |
| 3729 | return DWARFDIE(); |
| 3730 | } |
| 3731 | } |
| 3732 | } |
| 3733 | assert(0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on "((0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on " "something not in a function") ? static_cast<void> (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\"" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3734, __PRETTY_FUNCTION__)) |
| 3734 | "something not in a function")((0 && "Shouldn't call GetContainingFunctionWithAbstractOrigin on " "something not in a function") ? static_cast<void> (0) : __assert_fail ("0 && \"Shouldn't call GetContainingFunctionWithAbstractOrigin on \" \"something not in a function\"" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3734, __PRETTY_FUNCTION__)); |
| 3735 | return DWARFDIE(); |
| 3736 | } |
| 3737 | |
| 3738 | static DWARFDIE FindAnyChildWithAbstractOrigin(const DWARFDIE &context) { |
| 3739 | for (DWARFDIE candidate = context.GetFirstChild(); candidate.IsValid(); |
| 3740 | candidate = candidate.GetSibling()) { |
| 3741 | if (candidate.GetReferencedDIE(DW_AT_abstract_origin)) { |
| 3742 | return candidate; |
| 3743 | } |
| 3744 | } |
| 3745 | return DWARFDIE(); |
| 3746 | } |
| 3747 | |
| 3748 | static DWARFDIE FindFirstChildWithAbstractOrigin(const DWARFDIE &block, |
| 3749 | const DWARFDIE &function) { |
| 3750 | assert(IsSubroutine(function))((IsSubroutine(function)) ? static_cast<void> (0) : __assert_fail ("IsSubroutine(function)", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3750, __PRETTY_FUNCTION__)); |
| 3751 | for (DWARFDIE context = block; context != function.GetParent(); |
| 3752 | context = context.GetParent()) { |
| 3753 | assert(!IsSubroutine(context) || context == function)((!IsSubroutine(context) || context == function) ? static_cast <void> (0) : __assert_fail ("!IsSubroutine(context) || context == function" , "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3753, __PRETTY_FUNCTION__)); |
| 3754 | if (DWARFDIE child = FindAnyChildWithAbstractOrigin(context)) { |
| 3755 | return child; |
| 3756 | } |
| 3757 | } |
| 3758 | return DWARFDIE(); |
| 3759 | } |
| 3760 | |
| 3761 | clang::DeclContext * |
| 3762 | DWARFASTParserClang::GetDeclContextForBlock(const DWARFDIE &die) { |
| 3763 | assert(die.Tag() == DW_TAG_lexical_block)((die.Tag() == DW_TAG_lexical_block) ? static_cast<void> (0) : __assert_fail ("die.Tag() == DW_TAG_lexical_block", "/build/llvm-toolchain-snapshot-6.0~svn317508/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp" , 3763, __PRETTY_FUNCTION__)); |
| 3764 | DWARFDIE containing_function_with_abstract_origin = |
| 3765 | GetContainingFunctionWithAbstractOrigin(die); |
| 3766 | if (!containing_function_with_abstract_origin) { |
| 3767 | return (clang::DeclContext *)ResolveBlockDIE(die); |
| 3768 | } |
| 3769 | DWARFDIE child = FindFirstChildWithAbstractOrigin( |
| 3770 | die, containing_function_with_abstract_origin); |
| 3771 | CompilerDeclContext decl_context = |
| 3772 | GetDeclContextContainingUIDFromDWARF(child); |
| 3773 | return (clang::DeclContext *)decl_context.GetOpaqueDeclContext(); |
| 3774 | } |
| 3775 | |
| 3776 | clang::BlockDecl *DWARFASTParserClang::ResolveBlockDIE(const DWARFDIE &die) { |
| 3777 | if (die && die.Tag() == DW_TAG_lexical_block) { |
| 3778 | clang::BlockDecl *decl = |
| 3779 | llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]); |
| 3780 | |
| 3781 | if (!decl) { |
| 3782 | DWARFDIE decl_context_die; |
| 3783 | clang::DeclContext *decl_context = |
| 3784 | GetClangDeclContextContainingDIE(die, &decl_context_die); |
| 3785 | decl = m_ast.CreateBlockDeclaration(decl_context); |
| 3786 | |
| 3787 | if (decl) |
| 3788 | LinkDeclContextToDIE((clang::DeclContext *)decl, die); |
| 3789 | } |
| 3790 | |
| 3791 | return decl; |
| 3792 | } |
| 3793 | return nullptr; |
| 3794 | } |
| 3795 | |
| 3796 | clang::NamespaceDecl * |
| 3797 | DWARFASTParserClang::ResolveNamespaceDIE(const DWARFDIE &die) { |
| 3798 | if (die && die.Tag() == DW_TAG_namespace) { |
| 3799 | // See if we already parsed this namespace DIE and associated it with a |
| 3800 | // uniqued namespace declaration |
| 3801 | clang::NamespaceDecl *namespace_decl = |
| 3802 | static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die.GetDIE()]); |
| 3803 | if (namespace_decl) |
| 3804 | return namespace_decl; |
| 3805 | else { |
| 3806 | const char *namespace_name = die.GetName(); |
| 3807 | clang::DeclContext *containing_decl_ctx = |
| 3808 | GetClangDeclContextContainingDIE(die, nullptr); |
| 3809 | namespace_decl = m_ast.GetUniqueNamespaceDeclaration(namespace_name, |
| 3810 | containing_decl_ctx); |
| 3811 | Log *log = |
| 3812 | nullptr; // (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| 3813 | if (log) { |
| 3814 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 3815 | if (namespace_name) { |
| 3816 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 3817 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
| 3818 | ": DW_TAG_namespace with DW_AT_name(\"%s\") => " |
| 3819 | "clang::NamespaceDecl *%p (original = %p)", |
| 3820 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
| 3821 | namespace_name, static_cast<void *>(namespace_decl), |
| 3822 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
| 3823 | } else { |
| 3824 | dwarf->GetObjectFile()->GetModule()->LogMessage( |
| 3825 | log, "ASTContext => %p: 0x%8.8" PRIx64"l" "x" |
| 3826 | ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p " |
| 3827 | "(original = %p)", |
| 3828 | static_cast<void *>(m_ast.getASTContext()), die.GetID(), |
| 3829 | static_cast<void *>(namespace_decl), |
| 3830 | static_cast<void *>(namespace_decl->getOriginalNamespace())); |
| 3831 | } |
| 3832 | } |
| 3833 | |
| 3834 | if (namespace_decl) |
| 3835 | LinkDeclContextToDIE((clang::DeclContext *)namespace_decl, die); |
| 3836 | return namespace_decl; |
| 3837 | } |
| 3838 | } |
| 3839 | return nullptr; |
| 3840 | } |
| 3841 | |
| 3842 | clang::DeclContext *DWARFASTParserClang::GetClangDeclContextContainingDIE( |
| 3843 | const DWARFDIE &die, DWARFDIE *decl_ctx_die_copy) { |
| 3844 | SymbolFileDWARF *dwarf = die.GetDWARF(); |
| 3845 | |
| 3846 | DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE(die); |
| 3847 | |
| 3848 | if (decl_ctx_die_copy) |
| 3849 | *decl_ctx_die_copy = decl_ctx_die; |
| 3850 | |
| 3851 | if (decl_ctx_die) { |
| 3852 | clang::DeclContext *clang_decl_ctx = |
| 3853 | GetClangDeclContextForDIE(decl_ctx_die); |
| 3854 | if (clang_decl_ctx) |
| 3855 | return clang_decl_ctx; |
| 3856 | } |
| 3857 | return m_ast.GetTranslationUnitDecl(); |
| 3858 | } |
| 3859 | |
| 3860 | clang::DeclContext * |
| 3861 | DWARFASTParserClang::GetCachedClangDeclContextForDIE(const DWARFDIE &die) { |
| 3862 | if (die) { |
| 3863 | DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); |
| 3864 | if (pos != m_die_to_decl_ctx.end()) |
| 3865 | return pos->second; |
| 3866 | } |
| 3867 | return nullptr; |
| 3868 | } |
| 3869 | |
| 3870 | void DWARFASTParserClang::LinkDeclContextToDIE(clang::DeclContext *decl_ctx, |
| 3871 | const DWARFDIE &die) { |
| 3872 | m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; |
| 3873 | // There can be many DIEs for a single decl context |
| 3874 | // m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); |
| 3875 | m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die)); |
| 3876 | } |
| 3877 | |
| 3878 | bool DWARFASTParserClang::CopyUniqueClassMethodTypes( |
| 3879 | const DWARFDIE &src_class_die, const DWARFDIE &dst_class_die, |
| 3880 | lldb_private::Type *class_type, DWARFDIECollection &failures) { |
| 3881 | if (!class_type || !src_class_die || !dst_class_die) |
| 3882 | return false; |
| 3883 | if (src_class_die.Tag() != dst_class_die.Tag()) |
| 3884 | return false; |
| 3885 | |
| 3886 | // We need to complete the class type so we can get all of the method types |
| 3887 | // parsed so we can then unique those types to their equivalent counterparts |
| 3888 | // in "dst_cu" and "dst_class_die" |
| 3889 | class_type->GetFullCompilerType(); |
| 3890 | |
| 3891 | DWARFDIE src_die; |
| 3892 | DWARFDIE dst_die; |
| 3893 | UniqueCStringMap<DWARFDIE> src_name_to_die; |
| 3894 | UniqueCStringMap<DWARFDIE> dst_name_to_die; |
| 3895 | UniqueCStringMap<DWARFDIE> src_name_to_die_artificial; |
| 3896 | UniqueCStringMap<DWARFDIE> dst_name_to_die_artificial; |
| 3897 | for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); |
| 3898 | src_die = src_die.GetSibling()) { |
| 3899 | if (src_die.Tag() == DW_TAG_subprogram) { |
| 3900 | // Make sure this is a declaration and not a concrete instance by looking |
| 3901 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
| 3902 | // are placed inside the class definitions and shouldn't be included in |
| 3903 | // the list of things are are tracking here. |
| 3904 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
| 3905 | const char *src_name = src_die.GetMangledName(); |
| 3906 | if (src_name) { |
| 3907 | ConstString src_const_name(src_name); |
| 3908 | if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
| 3909 | src_name_to_die_artificial.Append(src_const_name, src_die); |
| 3910 | else |
| 3911 | src_name_to_die.Append(src_const_name, src_die); |
| 3912 | } |
| 3913 | } |
| 3914 | } |
| 3915 | } |
| 3916 | for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); |
| 3917 | dst_die = dst_die.GetSibling()) { |
| 3918 | if (dst_die.Tag() == DW_TAG_subprogram) { |
| 3919 | // Make sure this is a declaration and not a concrete instance by looking |
| 3920 | // for DW_AT_declaration set to 1. Sometimes concrete function instances |
| 3921 | // are placed inside the class definitions and shouldn't be included in |
| 3922 | // the list of things are are tracking here. |
| 3923 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) { |
| 3924 | const char *dst_name = dst_die.GetMangledName(); |
| 3925 | if (dst_name) { |
| 3926 | ConstString dst_const_name(dst_name); |
| 3927 | if (dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) |
| 3928 | dst_name_to_die_artificial.Append(dst_const_name, dst_die); |
| 3929 | else |
| 3930 | dst_name_to_die.Append(dst_const_name, dst_die); |
| 3931 | } |
| 3932 | } |
| 3933 | } |
| 3934 | } |
| 3935 | const uint32_t src_size = src_name_to_die.GetSize(); |
| 3936 | const uint32_t dst_size = dst_name_to_die.GetSize(); |
| 3937 | Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | |
| 3938 | // DWARF_LOG_TYPE_COMPLETION)); |
| 3939 | |
| 3940 | // Is everything kosher so we can go through the members at top speed? |
| 3941 | bool fast_path = true; |
| 3942 | |
| 3943 | if (src_size != dst_size) { |
| 3944 | if (src_size != 0 && dst_size != 0) { |
| 3945 | if (log) |
| 3946 | log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, " |
| 3947 | "but they didn't have the same size (src=%d, dst=%d)", |
| 3948 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
| 3949 | src_size, dst_size); |
| 3950 | } |
| 3951 | |
| 3952 | fast_path = false; |
| 3953 | } |
| 3954 | |
| 3955 | uint32_t idx; |
| 3956 | |
| 3957 | if (fast_path) { |
| 3958 | for (idx = 0; idx < src_size; ++idx) { |
| 3959 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
| 3960 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
| 3961 | |
| 3962 | if (src_die.Tag() != dst_die.Tag()) { |
| 3963 | if (log) |
| 3964 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
| 3965 | "but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", |
| 3966 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
| 3967 | src_die.GetOffset(), src_die.GetTagAsCString(), |
| 3968 | dst_die.GetOffset(), dst_die.GetTagAsCString()); |
| 3969 | fast_path = false; |
| 3970 | } |
| 3971 | |
| 3972 | const char *src_name = src_die.GetMangledName(); |
| 3973 | const char *dst_name = dst_die.GetMangledName(); |
| 3974 | |
| 3975 | // Make sure the names match |
| 3976 | if (src_name == dst_name || (strcmp(src_name, dst_name) == 0)) |
| 3977 | continue; |
| 3978 | |
| 3979 | if (log) |
| 3980 | log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, " |
| 3981 | "but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", |
| 3982 | src_class_die.GetOffset(), dst_class_die.GetOffset(), |
| 3983 | src_die.GetOffset(), src_name, dst_die.GetOffset(), |
| 3984 | dst_name); |
| 3985 | |
| 3986 | fast_path = false; |
| 3987 | } |
| 3988 | } |
| 3989 | |
| 3990 | DWARFASTParserClang *src_dwarf_ast_parser = |
| 3991 | (DWARFASTParserClang *)src_die.GetDWARFParser(); |
| 3992 | DWARFASTParserClang *dst_dwarf_ast_parser = |
| 3993 | (DWARFASTParserClang *)dst_die.GetDWARFParser(); |
| 3994 | |
| 3995 | // Now do the work of linking the DeclContexts and Types. |
| 3996 | if (fast_path) { |
| 3997 | // We can do this quickly. Just run across the tables index-for-index since |
| 3998 | // we know each node has matching names and tags. |
| 3999 | for (idx = 0; idx < src_size; ++idx) { |
| 4000 | src_die = src_name_to_die.GetValueAtIndexUnchecked(idx); |
| 4001 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
| 4002 | |
| 4003 | clang::DeclContext *src_decl_ctx = |
| 4004 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
| 4005 | if (src_decl_ctx) { |
| 4006 | if (log) |
| 4007 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
| 4008 | static_cast<void *>(src_decl_ctx), src_die.GetOffset(), |
| 4009 | dst_die.GetOffset()); |
| 4010 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
| 4011 | } else { |
| 4012 | if (log) |
| 4013 | log->Printf("warning: tried to unique decl context from 0x%8.8x for " |
| 4014 | "0x%8.8x, but none was found", |
| 4015 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4016 | } |
| 4017 | |
| 4018 | Type *src_child_type = |
| 4019 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
| 4020 | if (src_child_type) { |
| 4021 | if (log) |
| 4022 | log->Printf( |
| 4023 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
| 4024 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
| 4025 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4026 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
| 4027 | } else { |
| 4028 | if (log) |
| 4029 | log->Printf("warning: tried to unique lldb_private::Type from " |
| 4030 | "0x%8.8x for 0x%8.8x, but none was found", |
| 4031 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4032 | } |
| 4033 | } |
| 4034 | } else { |
| 4035 | // We must do this slowly. For each member of the destination, look |
| 4036 | // up a member in the source with the same name, check its tag, and |
| 4037 | // unique them if everything matches up. Report failures. |
| 4038 | |
| 4039 | if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) { |
| 4040 | src_name_to_die.Sort(); |
| 4041 | |
| 4042 | for (idx = 0; idx < dst_size; ++idx) { |
| 4043 | ConstString dst_name = dst_name_to_die.GetCStringAtIndex(idx); |
| 4044 | dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); |
| 4045 | src_die = src_name_to_die.Find(dst_name, DWARFDIE()); |
| 4046 | |
| 4047 | if (src_die && (src_die.Tag() == dst_die.Tag())) { |
| 4048 | clang::DeclContext *src_decl_ctx = |
| 4049 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
| 4050 | if (src_decl_ctx) { |
| 4051 | if (log) |
| 4052 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
| 4053 | static_cast<void *>(src_decl_ctx), |
| 4054 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4055 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
| 4056 | } else { |
| 4057 | if (log) |
| 4058 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
| 4059 | "for 0x%8.8x, but none was found", |
| 4060 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4061 | } |
| 4062 | |
| 4063 | Type *src_child_type = |
| 4064 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
| 4065 | if (src_child_type) { |
| 4066 | if (log) |
| 4067 | log->Printf("uniquing type %p (uid=0x%" PRIx64"l" "x" |
| 4068 | ") from 0x%8.8x for 0x%8.8x", |
| 4069 | static_cast<void *>(src_child_type), |
| 4070 | src_child_type->GetID(), src_die.GetOffset(), |
| 4071 | dst_die.GetOffset()); |
| 4072 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = |
| 4073 | src_child_type; |
| 4074 | } else { |
| 4075 | if (log) |
| 4076 | log->Printf("warning: tried to unique lldb_private::Type from " |
| 4077 | "0x%8.8x for 0x%8.8x, but none was found", |
| 4078 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4079 | } |
| 4080 | } else { |
| 4081 | if (log) |
| 4082 | log->Printf("warning: couldn't find a match for 0x%8.8x", |
| 4083 | dst_die.GetOffset()); |
| 4084 | |
| 4085 | failures.Append(dst_die); |
| 4086 | } |
| 4087 | } |
| 4088 | } |
| 4089 | } |
| 4090 | |
| 4091 | const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize(); |
| 4092 | const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize(); |
| 4093 | |
| 4094 | if (src_size_artificial && dst_size_artificial) { |
| 4095 | dst_name_to_die_artificial.Sort(); |
| 4096 | |
| 4097 | for (idx = 0; idx < src_size_artificial; ++idx) { |
| 4098 | ConstString src_name_artificial = |
| 4099 | src_name_to_die_artificial.GetCStringAtIndex(idx); |
| 4100 | src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
| 4101 | dst_die = |
| 4102 | dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); |
| 4103 | |
| 4104 | if (dst_die) { |
| 4105 | // Both classes have the artificial types, link them |
| 4106 | clang::DeclContext *src_decl_ctx = |
| 4107 | src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; |
| 4108 | if (src_decl_ctx) { |
| 4109 | if (log) |
| 4110 | log->Printf("uniquing decl context %p from 0x%8.8x for 0x%8.8x", |
| 4111 | static_cast<void *>(src_decl_ctx), src_die.GetOffset(), |
| 4112 | dst_die.GetOffset()); |
| 4113 | dst_dwarf_ast_parser->LinkDeclContextToDIE(src_decl_ctx, dst_die); |
| 4114 | } else { |
| 4115 | if (log) |
| 4116 | log->Printf("warning: tried to unique decl context from 0x%8.8x " |
| 4117 | "for 0x%8.8x, but none was found", |
| 4118 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4119 | } |
| 4120 | |
| 4121 | Type *src_child_type = |
| 4122 | dst_die.GetDWARF()->GetDIEToType()[src_die.GetDIE()]; |
| 4123 | if (src_child_type) { |
| 4124 | if (log) |
| 4125 | log->Printf( |
| 4126 | "uniquing type %p (uid=0x%" PRIx64"l" "x" ") from 0x%8.8x for 0x%8.8x", |
| 4127 | static_cast<void *>(src_child_type), src_child_type->GetID(), |
| 4128 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4129 | dst_die.GetDWARF()->GetDIEToType()[dst_die.GetDIE()] = src_child_type; |
| 4130 | } else { |
| 4131 | if (log) |
| 4132 | log->Printf("warning: tried to unique lldb_private::Type from " |
| 4133 | "0x%8.8x for 0x%8.8x, but none was found", |
| 4134 | src_die.GetOffset(), dst_die.GetOffset()); |
| 4135 | } |
| 4136 | } |
| 4137 | } |
| 4138 | } |
| 4139 | |
| 4140 | if (dst_size_artificial) { |
| 4141 | for (idx = 0; idx < dst_size_artificial; ++idx) { |
| 4142 | ConstString dst_name_artificial = |
| 4143 | dst_name_to_die_artificial.GetCStringAtIndex(idx); |
| 4144 | dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked(idx); |
| 4145 | if (log) |
| 4146 | log->Printf("warning: need to create artificial method for 0x%8.8x for " |
| 4147 | "method '%s'", |
| 4148 | dst_die.GetOffset(), dst_name_artificial.GetCString()); |
| 4149 | |
| 4150 | failures.Append(dst_die); |
| 4151 | } |
| 4152 | } |
| 4153 | |
| 4154 | return (failures.Size() != 0); |
| 4155 | } |