diff --git a/lldb/include/lldb/Symbol/ClangASTContext.h b/lldb/include/lldb/Symbol/ClangASTContext.h index 5f3e33c98dcc..a629de1d2fd8 100644 --- a/lldb/include/lldb/Symbol/ClangASTContext.h +++ b/lldb/include/lldb/Symbol/ClangASTContext.h @@ -29,16 +29,9 @@ #include "lldb/lldb-enumerations.h" #include "lldb/Core/ClangForward.h" #include "lldb/Core/ConstString.h" -#include "lldb/Core/dwarf.h" #include "lldb/Symbol/CompilerType.h" #include "lldb/Symbol/TypeSystem.h" - -// Forward definitions for DWARF plug-in for type parsing -class DWARFDebugInfoEntry; -class DWARFDIE; -class DWARFDIECollection; - namespace lldb_private { class Declaration; @@ -499,27 +492,8 @@ public: return this; } - lldb::TypeSP - ParseTypeFromDWARF (const SymbolContext& sc, - const DWARFDIE &die, - Log *log, - bool *type_is_new_ptr) override; - - - Function * - ParseFunctionFromDWARF (const SymbolContext& sc, - const DWARFDIE &die) override; - - bool - CompleteTypeFromDWARF (const DWARFDIE &die, - lldb_private::Type *type, - CompilerType &clang_type) override; - - CompilerDeclContext - GetDeclContextForUIDFromDWARF (const DWARFDIE &die) override; - - CompilerDeclContext - GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) override; + DWARFASTParser * + GetDWARFParser () override; //------------------------------------------------------------------ // ClangASTContext callbacks for external source lookups. @@ -539,9 +513,6 @@ public: llvm::DenseMap &base_offsets, llvm::DenseMap &vbase_offsets); - clang::NamespaceDecl * - ResolveNamespaceDIE (const DWARFDIE &die); - //---------------------------------------------------------------------- // CompilerDeclContext override functions //---------------------------------------------------------------------- @@ -1089,6 +1060,13 @@ public: return clang::QualType(); } + clang::ClassTemplateDecl * + ParseClassTemplateDecl (clang::DeclContext *decl_ctx, + lldb::AccessType access_type, + const char *parent_name, + int tag_decl_kind, + const ClangASTContext::TemplateParameterInfos &template_param_infos); + protected: static clang::QualType GetQualType (void *type) @@ -1106,109 +1084,6 @@ protected: return clang::QualType(); } - struct LayoutInfo - { - LayoutInfo () : - bit_size(0), - alignment(0), - field_offsets(), - base_offsets(), - vbase_offsets() - { - } - uint64_t bit_size; - uint64_t alignment; - llvm::DenseMap field_offsets; - llvm::DenseMap base_offsets; - llvm::DenseMap vbase_offsets; - }; - - typedef llvm::DenseMap RecordDeclToLayoutMap; - - - // DWARF parsing functions - bool - ParseTemplateDIE (const DWARFDIE &die, - ClangASTContext::TemplateParameterInfos &template_param_infos); - bool - ParseTemplateParameterInfos (const DWARFDIE &parent_die, - ClangASTContext::TemplateParameterInfos &template_param_infos); - - clang::ClassTemplateDecl * - ParseClassTemplateDecl (clang::DeclContext *decl_ctx, - lldb::AccessType access_type, - const char *parent_name, - int tag_decl_kind, - const ClangASTContext::TemplateParameterInfos &template_param_infos); - - class DelayedAddObjCClassProperty; - typedef std::vector DelayedPropertyList; - - size_t - ParseChildMembers (const lldb_private::SymbolContext& sc, - const DWARFDIE &die, - lldb_private::CompilerType &class_clang_type, - const lldb::LanguageType class_language, - std::vector& base_classes, - std::vector& member_accessibilities, - DWARFDIECollection& member_function_dies, - DelayedPropertyList& delayed_properties, - lldb::AccessType &default_accessibility, - bool &is_a_class, - LayoutInfo &layout_info); - - size_t - ParseChildParameters (const lldb_private::SymbolContext& sc, - clang::DeclContext *containing_decl_ctx, - const DWARFDIE &parent_die, - bool skip_artificial, - bool &is_static, - bool &is_variadic, - std::vector& function_args, - std::vector& function_param_decls, - unsigned &type_quals); - - - void - ParseChildArrayInfo (const lldb_private::SymbolContext& sc, - const DWARFDIE &parent_die, - int64_t& first_index, - std::vector& element_orders, - uint32_t& byte_stride, - uint32_t& bit_stride); - - - size_t - ParseChildEnumerators (const SymbolContext& sc, - lldb_private::CompilerType &clang_type, - bool is_signed, - uint32_t enumerator_byte_size, - const DWARFDIE &parent_die); - - clang::DeclContext * - GetClangDeclContextForDIE (const DWARFDIE &die); - - clang::DeclContext * - GetClangDeclContextContainingDIE (const DWARFDIE &die, - DWARFDIE *decl_ctx_die); - - bool - CopyUniqueClassMethodTypes (const DWARFDIE &src_class_die, - const DWARFDIE &dst_class_die, - Type *class_type, - DWARFDIECollection &failures); - - clang::DeclContext * - GetCachedClangDeclContextForDIE (const DWARFDIE &die); - - void - LinkDeclContextToDIE (clang::DeclContext *decl_ctx, - const DWARFDIE &die); - - typedef llvm::SmallPtrSet DIEPointerSet; - typedef llvm::DenseMap DIEToDeclContextMap; - typedef llvm::DenseMap DeclContextToDIEMap; - //------------------------------------------------------------------ // Classes that inherit from ClangASTContext can see and modify these //------------------------------------------------------------------ @@ -1225,18 +1100,12 @@ protected: std::unique_ptr m_identifier_table_ap; std::unique_ptr m_selector_table_ap; std::unique_ptr m_builtins_ap; + std::unique_ptr m_dwarf_ast_parser_ap; CompleteTagDeclCallback m_callback_tag_decl; CompleteObjCInterfaceDeclCallback m_callback_objc_decl; void * m_callback_baton; uint32_t m_pointer_byte_size; bool m_ast_owned; - // DWARF Parsing related ivars - RecordDeclToLayoutMap m_record_decl_to_layout_map; - DIEToDeclContextMap m_die_to_decl_ctx; - DeclContextToDIEMap m_decl_ctx_to_die; - clang::TranslationUnitDecl * m_clang_tu_decl; - - private: //------------------------------------------------------------------ diff --git a/lldb/include/lldb/Symbol/TypeSystem.h b/lldb/include/lldb/Symbol/TypeSystem.h index 4bca3ea662e5..77e730f956bc 100644 --- a/lldb/include/lldb/Symbol/TypeSystem.h +++ b/lldb/include/lldb/Symbol/TypeSystem.h @@ -19,6 +19,7 @@ #include "clang/AST/Type.h" class DWARFDIE; +class DWARFASTParser; namespace lldb_private { @@ -38,37 +39,10 @@ public: virtual ClangASTContext * AsClangASTContext() = 0; - //---------------------------------------------------------------------- - // DWARF type parsing - //---------------------------------------------------------------------- - virtual lldb::TypeSP - ParseTypeFromDWARF (const SymbolContext& sc, - const DWARFDIE &die, - Log *log, - bool *type_is_new_ptr) = 0; - - virtual Function * - ParseFunctionFromDWARF (const SymbolContext& sc, - const DWARFDIE &die) = 0; - - virtual bool - CompleteTypeFromDWARF (const DWARFDIE &die, - lldb_private::Type *type, - CompilerType &clang_type) + virtual DWARFASTParser * + GetDWARFParser () { - return false; - } - - virtual CompilerDeclContext - GetDeclContextForUIDFromDWARF (const DWARFDIE &die) - { - return CompilerDeclContext(); - } - - virtual CompilerDeclContext - GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) - { - return CompilerDeclContext(); + return nullptr; } virtual SymbolFile * diff --git a/lldb/lldb.xcodeproj/project.pbxproj b/lldb/lldb.xcodeproj/project.pbxproj index 304a214a8fae..b3b236a9f07f 100644 --- a/lldb/lldb.xcodeproj/project.pbxproj +++ b/lldb/lldb.xcodeproj/project.pbxproj @@ -559,6 +559,7 @@ 2697A39315E404B1003E682C /* OptionValueArch.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 2697A39215E404B1003E682C /* OptionValueArch.cpp */; }; 2697A54D133A6305004E4240 /* PlatformDarwin.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 2697A54B133A6305004E4240 /* PlatformDarwin.cpp */; }; 2698699B15E6CBD0002415FF /* OperatingSystemPython.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 2698699815E6CBD0002415FF /* OperatingSystemPython.cpp */; }; + 269DDD4A1B8FD1C300D0DBD8 /* DWARFASTParserClang.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 269DDD481B8FD1C300D0DBD8 /* DWARFASTParserClang.cpp */; settings = {ASSET_TAGS = (); }; }; 26A527C114E24F5F00F3A14A /* ProcessMachCore.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 26A527BD14E24F5F00F3A14A /* ProcessMachCore.cpp */; }; 26A527C314E24F5F00F3A14A /* ThreadMachCore.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 26A527BF14E24F5F00F3A14A /* ThreadMachCore.cpp */; }; 26A69C5F137A17A500262477 /* RegisterValue.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 26C6886E137880C400407EDF /* RegisterValue.cpp */; }; @@ -1721,6 +1722,9 @@ 2697A54C133A6305004E4240 /* PlatformDarwin.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PlatformDarwin.h; sourceTree = ""; }; 2698699815E6CBD0002415FF /* OperatingSystemPython.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = OperatingSystemPython.cpp; sourceTree = ""; }; 2698699915E6CBD0002415FF /* OperatingSystemPython.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = OperatingSystemPython.h; sourceTree = ""; }; + 269DDD451B8FD01A00D0DBD8 /* DWARFASTParser.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DWARFASTParser.h; sourceTree = ""; }; + 269DDD481B8FD1C300D0DBD8 /* DWARFASTParserClang.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = DWARFASTParserClang.cpp; sourceTree = ""; }; + 269DDD491B8FD1C300D0DBD8 /* DWARFASTParserClang.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DWARFASTParserClang.h; sourceTree = ""; }; 269FF07D12494F7D00225026 /* FuncUnwinders.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = FuncUnwinders.h; path = include/lldb/Symbol/FuncUnwinders.h; sourceTree = ""; }; 269FF07F12494F8E00225026 /* UnwindPlan.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = UnwindPlan.h; path = include/lldb/Symbol/UnwindPlan.h; sourceTree = ""; }; 269FF08112494FC200225026 /* UnwindTable.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = UnwindTable.h; path = include/lldb/Symbol/UnwindTable.h; sourceTree = ""; }; @@ -3092,6 +3096,9 @@ children = ( 260C89B310F57C5600BB2B04 /* DWARFAbbreviationDeclaration.cpp */, 260C89B410F57C5600BB2B04 /* DWARFAbbreviationDeclaration.h */, + 269DDD451B8FD01A00D0DBD8 /* DWARFASTParser.h */, + 269DDD491B8FD1C300D0DBD8 /* DWARFASTParserClang.h */, + 269DDD481B8FD1C300D0DBD8 /* DWARFASTParserClang.cpp */, 260C89B610F57C5600BB2B04 /* DWARFAttribute.h */, 266E829C1B8E542C008FCA06 /* DWARFAttribute.cpp */, 260C89B710F57C5600BB2B04 /* DWARFCompileUnit.cpp */, @@ -6145,6 +6152,7 @@ 26B75B441AD6E29A001F7A57 /* MipsLinuxSignals.cpp in Sources */, 2689003E13353E0400698AC0 /* FileSpecList.cpp in Sources */, 2689004113353E0400698AC0 /* Listener.cpp in Sources */, + 269DDD4A1B8FD1C300D0DBD8 /* DWARFASTParserClang.cpp in Sources */, 2689004213353E0400698AC0 /* Log.cpp in Sources */, 2689004313353E0400698AC0 /* Mangled.cpp in Sources */, 2689004413353E0400698AC0 /* Module.cpp in Sources */, diff --git a/lldb/source/Plugins/SymbolFile/DWARF/CMakeLists.txt b/lldb/source/Plugins/SymbolFile/DWARF/CMakeLists.txt index b4ded6288a73..56e1bda140aa 100644 --- a/lldb/source/Plugins/SymbolFile/DWARF/CMakeLists.txt +++ b/lldb/source/Plugins/SymbolFile/DWARF/CMakeLists.txt @@ -2,6 +2,7 @@ set(LLVM_NO_RTTI 1) add_lldb_library(lldbPluginSymbolFileDWARF DWARFAbbreviationDeclaration.cpp + DWARFASTParserClang.cpp DWARFAttribute.cpp DWARFCompileUnit.cpp DWARFDataExtractor.cpp diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h new file mode 100644 index 000000000000..282524307f5f --- /dev/null +++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParser.h @@ -0,0 +1,48 @@ +//===-- DWARFASTParser.h ----------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef SymbolFileDWARF_DWARFASTParser_h_ +#define SymbolFileDWARF_DWARFASTParser_h_ + +#include "DWARFDefines.h" +#include "lldb/Core/PluginInterface.h" +#include "lldb/Symbol/CompilerDeclContext.h" + +class DWARFDIE; + +class DWARFASTParser +{ +public: + virtual ~DWARFASTParser() {} + + virtual lldb::TypeSP + ParseTypeFromDWARF (const lldb_private::SymbolContext& sc, + const DWARFDIE &die, + lldb_private::Log *log, + bool *type_is_new_ptr) = 0; + + + virtual lldb_private::Function * + ParseFunctionFromDWARF (const lldb_private::SymbolContext& sc, + const DWARFDIE &die) = 0; + + virtual bool + CompleteTypeFromDWARF (const DWARFDIE &die, + lldb_private::Type *type, + lldb_private::CompilerType &clang_type) = 0; + + virtual lldb_private::CompilerDeclContext + GetDeclContextForUIDFromDWARF (const DWARFDIE &die) = 0; + + virtual lldb_private::CompilerDeclContext + GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) = 0; + +}; + +#endif // SymbolFileDWARF_DWARFASTParser_h_ diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp new file mode 100644 index 000000000000..a1cff0f51cf8 --- /dev/null +++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp @@ -0,0 +1,3645 @@ +//===-- DWARFASTParserClang.cpp ---------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "DWARFASTParserClang.h" +#include "DWARFCompileUnit.h" +#include "DWARFDebugInfo.h" +#include "DWARFDeclContext.h" +#include "DWARFDefines.h" +#include "DWARFDIE.h" +#include "DWARFDIECollection.h" +#include "SymbolFileDWARF.h" +#include "SymbolFileDWARFDebugMap.h" +#include "UniqueDWARFASTType.h" + +#include "lldb/Core/Log.h" +#include "lldb/Core/Module.h" +#include "lldb/Symbol/ClangExternalASTSourceCommon.h" +#include "lldb/Symbol/CompileUnit.h" +#include "lldb/Symbol/Function.h" +#include "lldb/Symbol/ObjectFile.h" +#include "lldb/Symbol/TypeList.h" +#include "lldb/Target/ObjCLanguageRuntime.h" + +#include "clang/AST/DeclCXX.h" +#include "clang/AST/DeclObjC.h" + +//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN + +#ifdef ENABLE_DEBUG_PRINTF +#include +#define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) +#else +#define DEBUG_PRINTF(fmt, ...) +#endif + + +using namespace lldb; +using namespace lldb_private; +DWARFASTParserClang::DWARFASTParserClang (ClangASTContext &ast) : + m_ast (ast), + m_die_to_decl_ctx (), + m_decl_ctx_to_die () +{ +} + +DWARFASTParserClang::~DWARFASTParserClang () +{ +} + + +static AccessType +DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) +{ + switch (dwarf_accessibility) + { + case DW_ACCESS_public: return eAccessPublic; + case DW_ACCESS_private: return eAccessPrivate; + case DW_ACCESS_protected: return eAccessProtected; + default: break; + } + return eAccessNone; +} + +static bool +DeclKindIsCXXClass (clang::Decl::Kind decl_kind) +{ + switch (decl_kind) + { + case clang::Decl::CXXRecord: + case clang::Decl::ClassTemplateSpecialization: + return true; + default: + break; + } + return false; +} + +struct BitfieldInfo +{ + uint64_t bit_size; + uint64_t bit_offset; + + BitfieldInfo () : + bit_size (LLDB_INVALID_ADDRESS), + bit_offset (LLDB_INVALID_ADDRESS) + { + } + + void + Clear() + { + bit_size = LLDB_INVALID_ADDRESS; + bit_offset = LLDB_INVALID_ADDRESS; + } + + bool IsValid () + { + return (bit_size != LLDB_INVALID_ADDRESS) && + (bit_offset != LLDB_INVALID_ADDRESS); + } +}; + + +TypeSP +DWARFASTParserClang::ParseTypeFromDWARF (const SymbolContext& sc, + const DWARFDIE &die, + Log *log, + bool *type_is_new_ptr) +{ + TypeSP type_sp; + + if (type_is_new_ptr) + *type_is_new_ptr = false; + + AccessType accessibility = eAccessNone; + if (die) + { + SymbolFileDWARF *dwarf = die.GetDWARF(); + if (log) + { + DWARFDIE context_die; + clang::DeclContext *context = GetClangDeclContextContainingDIE (die, &context_die); + + dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')", + die.GetOffset(), + static_cast(context), + context_die.GetOffset(), + die.GetTagAsCString(), + die.GetName()); + + } + // + // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); + // if (log && dwarf_cu) + // { + // StreamString s; + // die->DumpLocation (this, dwarf_cu, s); + // dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); + // + // } + + Type *type_ptr = dwarf->m_die_to_type.lookup (die.GetDIE()); + TypeList* type_list = dwarf->GetTypeList(); + if (type_ptr == NULL) + { + if (type_is_new_ptr) + *type_is_new_ptr = true; + + const dw_tag_t tag = die.Tag(); + + bool is_forward_declaration = false; + DWARFAttributes attributes; + const char *type_name_cstr = NULL; + ConstString type_name_const_str; + Type::ResolveState resolve_state = Type::eResolveStateUnresolved; + uint64_t byte_size = 0; + Declaration decl; + + Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; + CompilerType clang_type; + DWARFFormValue form_value; + + dw_attr_t attr; + + switch (tag) + { + case DW_TAG_base_type: + case DW_TAG_pointer_type: + case DW_TAG_reference_type: + case DW_TAG_rvalue_reference_type: + case DW_TAG_typedef: + case DW_TAG_const_type: + case DW_TAG_restrict_type: + case DW_TAG_volatile_type: + case DW_TAG_unspecified_type: + { + // Set a bit that lets us know that we are currently parsing this + dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; + + const size_t num_attributes = die.GetAttributes (attributes); + uint32_t encoding = 0; + lldb::user_id_t encoding_uid = LLDB_INVALID_UID; + + if (num_attributes > 0) + { + uint32_t i; + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_name: + + type_name_cstr = form_value.AsCString(); + // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't + // include the "&"... + if (tag == DW_TAG_reference_type) + { + if (strchr (type_name_cstr, '&') == NULL) + type_name_cstr = NULL; + } + if (type_name_cstr) + type_name_const_str.SetCString(type_name_cstr); + break; + case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; + case DW_AT_encoding: encoding = form_value.Unsigned(); break; + case DW_AT_type: encoding_uid = form_value.Reference(); break; + default: + case DW_AT_sibling: + break; + } + } + } + } + + DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid); + + switch (tag) + { + default: + break; + + case DW_TAG_unspecified_type: + if (strcmp(type_name_cstr, "nullptr_t") == 0 || + strcmp(type_name_cstr, "decltype(nullptr)") == 0 ) + { + resolve_state = Type::eResolveStateFull; + clang_type = m_ast.GetBasicType(eBasicTypeNullPtr); + break; + } + // Fall through to base type below in case we can handle the type there... + + case DW_TAG_base_type: + resolve_state = Type::eResolveStateFull; + clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, + encoding, + byte_size * 8); + break; + + case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; + case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; + case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break; + case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; + case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; + case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; + case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; + } + + if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL) + { + bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); + + if (translation_unit_is_objc) + { + if (type_name_cstr != NULL) + { + static ConstString g_objc_type_name_id("id"); + static ConstString g_objc_type_name_Class("Class"); + static ConstString g_objc_type_name_selector("SEL"); + + if (type_name_const_str == g_objc_type_name_id) + { + if (log) + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.", + die.GetOffset(), + die.GetTagAsCString(), + die.GetName()); + clang_type = m_ast.GetBasicType(eBasicTypeObjCID); + encoding_data_type = Type::eEncodingIsUID; + encoding_uid = LLDB_INVALID_UID; + resolve_state = Type::eResolveStateFull; + + } + else if (type_name_const_str == g_objc_type_name_Class) + { + if (log) + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.", + die.GetOffset(), + die.GetTagAsCString(), + die.GetName()); + clang_type = m_ast.GetBasicType(eBasicTypeObjCClass); + encoding_data_type = Type::eEncodingIsUID; + encoding_uid = LLDB_INVALID_UID; + resolve_state = Type::eResolveStateFull; + } + else if (type_name_const_str == g_objc_type_name_selector) + { + if (log) + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.", + die.GetOffset(), + die.GetTagAsCString(), + die.GetName()); + clang_type = m_ast.GetBasicType(eBasicTypeObjCSel); + encoding_data_type = Type::eEncodingIsUID; + encoding_uid = LLDB_INVALID_UID; + resolve_state = Type::eResolveStateFull; + } + } + else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID) + { + // Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id". + + const DWARFDIE encoding_die = die.GetDIE(encoding_uid); + + if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) + { + if (const char *struct_name = encoding_die.GetName()) + { + if (!strcmp(struct_name, "objc_object")) + { + if (log) + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.", + die.GetOffset(), + die.GetTagAsCString(), + die.GetName()); + clang_type = m_ast.GetBasicType(eBasicTypeObjCID); + encoding_data_type = Type::eEncodingIsUID; + encoding_uid = LLDB_INVALID_UID; + resolve_state = Type::eResolveStateFull; + } + } + } + } + } + } + + type_sp.reset( new Type (die.GetID(), + dwarf, + type_name_const_str, + byte_size, + NULL, + encoding_uid, + encoding_data_type, + &decl, + clang_type, + resolve_state)); + + dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); + + // Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); + // if (encoding_type != NULL) + // { + // if (encoding_type != DIE_IS_BEING_PARSED) + // type_sp->SetEncodingType(encoding_type); + // else + // m_indirect_fixups.push_back(type_sp.get()); + // } + } + break; + + case DW_TAG_structure_type: + case DW_TAG_union_type: + case DW_TAG_class_type: + { + // Set a bit that lets us know that we are currently parsing this + dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; + bool byte_size_valid = false; + + LanguageType class_language = eLanguageTypeUnknown; + bool is_complete_objc_class = false; + //bool struct_is_class = false; + const size_t num_attributes = die.GetAttributes (attributes); + if (num_attributes > 0) + { + uint32_t i; + for (i=0; iDW_AT_decl_file_attributes_are_invalid()) + { + // llvm-gcc outputs invalid DW_AT_decl_file attributes that always + // point to the compile unit file, so we clear this invalid value + // so that we can still unique types efficiently. + decl.SetFile(FileSpec ("", false)); + } + else + decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); + break; + + case DW_AT_decl_line: + decl.SetLine(form_value.Unsigned()); + break; + + case DW_AT_decl_column: + decl.SetColumn(form_value.Unsigned()); + break; + + case DW_AT_name: + type_name_cstr = form_value.AsCString(); + type_name_const_str.SetCString(type_name_cstr); + break; + + case DW_AT_byte_size: + byte_size = form_value.Unsigned(); + byte_size_valid = true; + break; + + case DW_AT_accessibility: + accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); + break; + + case DW_AT_declaration: + is_forward_declaration = form_value.Boolean(); + break; + + case DW_AT_APPLE_runtime_class: + class_language = (LanguageType)form_value.Signed(); + break; + + case DW_AT_APPLE_objc_complete_type: + is_complete_objc_class = form_value.Signed(); + break; + + case DW_AT_allocated: + case DW_AT_associated: + case DW_AT_data_location: + case DW_AT_description: + case DW_AT_start_scope: + case DW_AT_visibility: + default: + case DW_AT_sibling: + break; + } + } + } + } + + // UniqueDWARFASTType is large, so don't create a local variables on the + // stack, put it on the heap. This function is often called recursively + // and clang isn't good and sharing the stack space for variables in different blocks. + std::unique_ptr unique_ast_entry_ap(new UniqueDWARFASTType()); + + // Only try and unique the type if it has a name. + if (type_name_const_str && + dwarf->GetUniqueDWARFASTTypeMap().Find (type_name_const_str, + die, + decl, + byte_size_valid ? byte_size : -1, + *unique_ast_entry_ap)) + { + // We have already parsed this type or from another + // compile unit. GCC loves to use the "one definition + // rule" which can result in multiple definitions + // of the same class over and over in each compile + // unit. + type_sp = unique_ast_entry_ap->m_type_sp; + if (type_sp) + { + dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); + return type_sp; + } + } + + DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); + + int tag_decl_kind = -1; + AccessType default_accessibility = eAccessNone; + if (tag == DW_TAG_structure_type) + { + tag_decl_kind = clang::TTK_Struct; + default_accessibility = eAccessPublic; + } + else if (tag == DW_TAG_union_type) + { + tag_decl_kind = clang::TTK_Union; + default_accessibility = eAccessPublic; + } + else if (tag == DW_TAG_class_type) + { + tag_decl_kind = clang::TTK_Class; + default_accessibility = eAccessPrivate; + } + + if (byte_size_valid && byte_size == 0 && type_name_cstr && + die.HasChildren() == false && + sc.comp_unit->GetLanguage() == eLanguageTypeObjC) + { + // Work around an issue with clang at the moment where + // forward declarations for objective C classes are emitted + // as: + // DW_TAG_structure_type [2] + // DW_AT_name( "ForwardObjcClass" ) + // DW_AT_byte_size( 0x00 ) + // DW_AT_decl_file( "..." ) + // DW_AT_decl_line( 1 ) + // + // Note that there is no DW_AT_declaration and there are + // no children, and the byte size is zero. + is_forward_declaration = true; + } + + if (class_language == eLanguageTypeObjC || + class_language == eLanguageTypeObjC_plus_plus) + { + if (!is_complete_objc_class && die.Supports_DW_AT_APPLE_objc_complete_type()) + { + // We have a valid eSymbolTypeObjCClass class symbol whose + // name matches the current objective C class that we + // are trying to find and this DIE isn't the complete + // definition (we checked is_complete_objc_class above and + // know it is false), so the real definition is in here somewhere + type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); + + if (!type_sp) + { + SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); + if (debug_map_symfile) + { + // We weren't able to find a full declaration in + // this DWARF, see if we have a declaration anywhere + // else... + type_sp = debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); + } + } + + if (type_sp) + { + if (log) + { + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64, + static_cast(this), + die.GetOffset(), + DW_TAG_value_to_name(tag), + type_name_cstr, + type_sp->GetID()); + } + + // We found a real definition for this type elsewhere + // so lets use it and cache the fact that we found + // a complete type for this die + dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); + return type_sp; + } + } + } + + + if (is_forward_declaration) + { + // We have a forward declaration to a type and we need + // to try and find a full declaration. We look in the + // current type index just in case we have a forward + // declaration followed by an actual declarations in the + // DWARF. If this fails, we need to look elsewhere... + if (log) + { + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", + static_cast(this), + die.GetOffset(), + DW_TAG_value_to_name(tag), + type_name_cstr); + } + + DWARFDeclContext die_decl_ctx; + die.GetDWARFDeclContext(die_decl_ctx); + + //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); + type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); + + if (!type_sp) + { + SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); + if (debug_map_symfile) + { + // We weren't able to find a full declaration in + // this DWARF, see if we have a declaration anywhere + // else... + type_sp = debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); + } + } + + if (type_sp) + { + if (log) + { + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64, + static_cast(this), + die.GetOffset(), + DW_TAG_value_to_name(tag), + type_name_cstr, + type_sp->GetID()); + } + + // We found a real definition for this type elsewhere + // so lets use it and cache the fact that we found + // a complete type for this die + dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); + return type_sp; + } + } + assert (tag_decl_kind != -1); + bool clang_type_was_created = false; + clang_type.SetCompilerType(&m_ast, dwarf->m_forward_decl_die_to_clang_type.lookup (die.GetDIE())); + if (!clang_type) + { + clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); + if (accessibility == eAccessNone && decl_ctx) + { + // Check the decl context that contains this class/struct/union. + // If it is a class we must give it an accessibility. + const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); + if (DeclKindIsCXXClass (containing_decl_kind)) + accessibility = default_accessibility; + } + + ClangASTMetadata metadata; + metadata.SetUserID(die.GetID()); + metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual (die)); + + if (type_name_cstr && strchr (type_name_cstr, '<')) + { + ClangASTContext::TemplateParameterInfos template_param_infos; + if (ParseTemplateParameterInfos (die, template_param_infos)) + { + clang::ClassTemplateDecl *class_template_decl = m_ast.ParseClassTemplateDecl (decl_ctx, + accessibility, + type_name_cstr, + tag_decl_kind, + template_param_infos); + + clang::ClassTemplateSpecializationDecl *class_specialization_decl = m_ast.CreateClassTemplateSpecializationDecl (decl_ctx, + class_template_decl, + tag_decl_kind, + template_param_infos); + clang_type = m_ast.CreateClassTemplateSpecializationType (class_specialization_decl); + clang_type_was_created = true; + + m_ast.SetMetadata (class_template_decl, metadata); + m_ast.SetMetadata (class_specialization_decl, metadata); + } + } + + if (!clang_type_was_created) + { + clang_type_was_created = true; + clang_type = m_ast.CreateRecordType (decl_ctx, + accessibility, + type_name_cstr, + tag_decl_kind, + class_language, + &metadata); + } + } + + // Store a forward declaration to this class type in case any + // parameters in any class methods need it for the clang + // types for function prototypes. + LinkDeclContextToDIE(m_ast.GetDeclContextForType(clang_type), die); + type_sp.reset (new Type (die.GetID(), + dwarf, + type_name_const_str, + byte_size, + NULL, + LLDB_INVALID_UID, + Type::eEncodingIsUID, + &decl, + clang_type, + Type::eResolveStateForward)); + + type_sp->SetIsCompleteObjCClass(is_complete_objc_class); + + + // Add our type to the unique type map so we don't + // end up creating many copies of the same type over + // and over in the ASTContext for our module + unique_ast_entry_ap->m_type_sp = type_sp; + unique_ast_entry_ap->m_die = die; + unique_ast_entry_ap->m_declaration = decl; + unique_ast_entry_ap->m_byte_size = byte_size; + dwarf->GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, + *unique_ast_entry_ap); + + if (is_forward_declaration && die.HasChildren()) + { + // Check to see if the DIE actually has a definition, some version of GCC will + // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram, + // members, or inheritance, so we can't trust it + DWARFDIE child_die = die.GetFirstChild(); + while (child_die) + { + switch (child_die.Tag()) + { + case DW_TAG_inheritance: + case DW_TAG_subprogram: + case DW_TAG_member: + case DW_TAG_APPLE_property: + case DW_TAG_class_type: + case DW_TAG_structure_type: + case DW_TAG_enumeration_type: + case DW_TAG_typedef: + case DW_TAG_union_type: + child_die.Clear(); + is_forward_declaration = false; + break; + default: + child_die = child_die.GetSibling(); + break; + } + } + } + + if (!is_forward_declaration) + { + // Always start the definition for a class type so that + // if the class has child classes or types that require + // the class to be created for use as their decl contexts + // the class will be ready to accept these child definitions. + if (die.HasChildren() == false) + { + // No children for this struct/union/class, lets finish it + ClangASTContext::StartTagDeclarationDefinition (clang_type); + ClangASTContext::CompleteTagDeclarationDefinition (clang_type); + + if (tag == DW_TAG_structure_type) // this only applies in C + { + clang::RecordDecl *record_decl = ClangASTContext::GetAsRecordDecl(clang_type); + + if (record_decl) + m_record_decl_to_layout_map.insert(std::make_pair(record_decl, LayoutInfo())); + } + } + else if (clang_type_was_created) + { + // Start the definition if the class is not objective C since + // the underlying decls respond to isCompleteDefinition(). Objective + // C decls don't respond to isCompleteDefinition() so we can't + // start the declaration definition right away. For C++ class/union/structs + // we want to start the definition in case the class is needed as the + // declaration context for a contained class or type without the need + // to complete that type.. + + if (class_language != eLanguageTypeObjC && + class_language != eLanguageTypeObjC_plus_plus) + ClangASTContext::StartTagDeclarationDefinition (clang_type); + + // Leave this as a forward declaration until we need + // to know the details of the type. lldb_private::Type + // will automatically call the SymbolFile virtual function + // "SymbolFileDWARF::CompleteType(Type *)" + // When the definition needs to be defined. + dwarf->m_forward_decl_die_to_clang_type[die.GetDIE()] = clang_type.GetOpaqueQualType(); + dwarf->m_forward_decl_clang_type_to_die[ClangASTContext::RemoveFastQualifiers(clang_type).GetOpaqueQualType()] = die.GetDIE(); + m_ast.SetHasExternalStorage (clang_type.GetOpaqueQualType(), true); + } + } + + } + break; + + case DW_TAG_enumeration_type: + { + // Set a bit that lets us know that we are currently parsing this + dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; + + lldb::user_id_t encoding_uid = DW_INVALID_OFFSET; + + const size_t num_attributes = die.GetAttributes (attributes); + if (num_attributes > 0) + { + uint32_t i; + + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_name: + type_name_cstr = form_value.AsCString(); + type_name_const_str.SetCString(type_name_cstr); + break; + case DW_AT_type: encoding_uid = form_value.Reference(); break; + case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; + case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; + case DW_AT_declaration: break; //is_forward_declaration = form_value.Boolean(); break; + case DW_AT_allocated: + case DW_AT_associated: + case DW_AT_bit_stride: + case DW_AT_byte_stride: + case DW_AT_data_location: + case DW_AT_description: + case DW_AT_start_scope: + case DW_AT_visibility: + case DW_AT_specification: + case DW_AT_abstract_origin: + case DW_AT_sibling: + break; + } + } + } + + DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); + + CompilerType enumerator_clang_type; + clang_type.SetCompilerType (&m_ast, dwarf->m_forward_decl_die_to_clang_type.lookup (die.GetDIE())); + if (!clang_type) + { + if (encoding_uid != DW_INVALID_OFFSET) + { + Type *enumerator_type = dwarf->ResolveTypeUID(encoding_uid); + if (enumerator_type) + enumerator_clang_type = enumerator_type->GetFullCompilerType (); + } + + if (!enumerator_clang_type) + enumerator_clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL, + DW_ATE_signed, + byte_size * 8); + + clang_type = m_ast.CreateEnumerationType (type_name_cstr, + GetClangDeclContextContainingDIE (die, nullptr), + decl, + enumerator_clang_type); + } + else + { + enumerator_clang_type = m_ast.GetEnumerationIntegerType (clang_type.GetOpaqueQualType()); + } + + LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die); + + type_sp.reset( new Type (die.GetID(), + dwarf, + type_name_const_str, + byte_size, + NULL, + encoding_uid, + Type::eEncodingIsUID, + &decl, + clang_type, + Type::eResolveStateForward)); + + ClangASTContext::StartTagDeclarationDefinition (clang_type); + if (die.HasChildren()) + { + SymbolContext cu_sc(die.GetLLDBCompileUnit()); + bool is_signed = false; + enumerator_clang_type.IsIntegerType(is_signed); + ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), die); + } + ClangASTContext::CompleteTagDeclarationDefinition (clang_type); + } + } + break; + + case DW_TAG_inlined_subroutine: + case DW_TAG_subprogram: + case DW_TAG_subroutine_type: + { + // Set a bit that lets us know that we are currently parsing this + dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; + + //const char *mangled = NULL; + dw_offset_t type_die_offset = DW_INVALID_OFFSET; + bool is_variadic = false; + bool is_inline = false; + bool is_static = false; + bool is_virtual = false; + bool is_explicit = false; + bool is_artificial = false; + dw_offset_t specification_die_offset = DW_INVALID_OFFSET; + dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET; + dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET; + + unsigned type_quals = 0; + clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern + + + const size_t num_attributes = die.GetAttributes (attributes); + if (num_attributes > 0) + { + uint32_t i; + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_name: + type_name_cstr = form_value.AsCString(); + type_name_const_str.SetCString(type_name_cstr); + break; + + case DW_AT_linkage_name: + case DW_AT_MIPS_linkage_name: break; // mangled = form_value.AsCString(&dwarf->get_debug_str_data()); break; + case DW_AT_type: type_die_offset = form_value.Reference(); break; + case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; + case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; + case DW_AT_inline: is_inline = form_value.Boolean(); break; + case DW_AT_virtuality: is_virtual = form_value.Boolean(); break; + case DW_AT_explicit: is_explicit = form_value.Boolean(); break; + case DW_AT_artificial: is_artificial = form_value.Boolean(); break; + + + case DW_AT_external: + if (form_value.Unsigned()) + { + if (storage == clang::SC_None) + storage = clang::SC_Extern; + else + storage = clang::SC_PrivateExtern; + } + break; + + case DW_AT_specification: + specification_die_offset = form_value.Reference(); + break; + + case DW_AT_abstract_origin: + abstract_origin_die_offset = form_value.Reference(); + break; + + case DW_AT_object_pointer: + object_pointer_die_offset = form_value.Reference(); + break; + + case DW_AT_allocated: + case DW_AT_associated: + case DW_AT_address_class: + case DW_AT_calling_convention: + case DW_AT_data_location: + case DW_AT_elemental: + case DW_AT_entry_pc: + case DW_AT_frame_base: + case DW_AT_high_pc: + case DW_AT_low_pc: + case DW_AT_prototyped: + case DW_AT_pure: + case DW_AT_ranges: + case DW_AT_recursive: + case DW_AT_return_addr: + case DW_AT_segment: + case DW_AT_start_scope: + case DW_AT_static_link: + case DW_AT_trampoline: + case DW_AT_visibility: + case DW_AT_vtable_elem_location: + case DW_AT_description: + case DW_AT_sibling: + break; + } + } + } + } + + std::string object_pointer_name; + if (object_pointer_die_offset != DW_INVALID_OFFSET) + { + DWARFDIE object_pointer_die = die.GetDIE (object_pointer_die_offset); + if (object_pointer_die) + { + const char *object_pointer_name_cstr = object_pointer_die.GetName(); + if (object_pointer_name_cstr) + object_pointer_name = object_pointer_name_cstr; + } + } + + DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); + + CompilerType return_clang_type; + Type *func_type = NULL; + + if (type_die_offset != DW_INVALID_OFFSET) + func_type = dwarf->ResolveTypeUID(type_die_offset); + + if (func_type) + return_clang_type = func_type->GetForwardCompilerType (); + else + return_clang_type = m_ast.GetBasicType(eBasicTypeVoid); + + + std::vector function_param_types; + std::vector function_param_decls; + + // Parse the function children for the parameters + + DWARFDIE decl_ctx_die; + clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (die, &decl_ctx_die); + const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); + + const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); + // Start off static. This will be set to false in ParseChildParameters(...) + // if we find a "this" parameters as the first parameter + if (is_cxx_method) + is_static = true; + + if (die.HasChildren()) + { + bool skip_artificial = true; + ParseChildParameters (sc, + containing_decl_ctx, + die, + skip_artificial, + is_static, + is_variadic, + function_param_types, + function_param_decls, + type_quals); + } + + // clang_type will get the function prototype clang type after this call + clang_type = m_ast.CreateFunctionType (return_clang_type, + function_param_types.data(), + function_param_types.size(), + is_variadic, + type_quals); + + bool ignore_containing_context = false; + + if (type_name_cstr) + { + bool type_handled = false; + if (tag == DW_TAG_subprogram || + tag == DW_TAG_inlined_subroutine) + { + ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true); + if (objc_method.IsValid(true)) + { + CompilerType class_opaque_type; + ConstString class_name(objc_method.GetClassName()); + if (class_name) + { + TypeSP complete_objc_class_type_sp (dwarf->FindCompleteObjCDefinitionTypeForDIE (DWARFDIE(), class_name, false)); + + if (complete_objc_class_type_sp) + { + CompilerType type_clang_forward_type = complete_objc_class_type_sp->GetForwardCompilerType (); + if (ClangASTContext::IsObjCObjectOrInterfaceType(type_clang_forward_type)) + class_opaque_type = type_clang_forward_type; + } + } + + if (class_opaque_type) + { + // If accessibility isn't set to anything valid, assume public for + // now... + if (accessibility == eAccessNone) + accessibility = eAccessPublic; + + clang::ObjCMethodDecl *objc_method_decl = m_ast.AddMethodToObjCObjectType (class_opaque_type, + type_name_cstr, + clang_type, + accessibility, + is_artificial); + type_handled = objc_method_decl != NULL; + if (type_handled) + { + LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); + m_ast.SetMetadataAsUserID (objc_method_decl, die.GetID()); + } + else + { + dwarf->GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", + die.GetOffset(), + tag, + DW_TAG_value_to_name(tag)); + } + } + } + else if (is_cxx_method) + { + // Look at the parent of this DIE and see if is is + // a class or struct and see if this is actually a + // C++ method + Type *class_type = dwarf->ResolveType (decl_ctx_die); + if (class_type) + { + if (class_type->GetID() != decl_ctx_die.GetID()) + { + // We uniqued the parent class of this function to another class + // so we now need to associate all dies under "decl_ctx_die" to + // DIEs in the DIE for "class_type"... + SymbolFileDWARF *class_symfile = NULL; + DWARFDIE class_type_die; + + SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); + if (debug_map_symfile) + { + class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID())); + class_type_die = class_symfile->DebugInfo()->GetDIE (class_type->GetID()); + } + else + { + class_symfile = dwarf; + class_type_die = dwarf->DebugInfo()->GetDIE (class_type->GetID()); + } + if (class_type_die) + { + DWARFDIECollection failures; + + CopyUniqueClassMethodTypes (decl_ctx_die, + class_type_die, + class_type, + failures); + + // FIXME do something with these failures that's smarter than + // just dropping them on the ground. Unfortunately classes don't + // like having stuff added to them after their definitions are + // complete... + + type_ptr = dwarf->m_die_to_type[die.GetDIE()]; + if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) + { + type_sp = type_ptr->shared_from_this(); + break; + } + } + } + + if (specification_die_offset != DW_INVALID_OFFSET) + { + // We have a specification which we are going to base our function + // prototype off of, so we need this type to be completed so that the + // m_die_to_decl_ctx for the method in the specification has a valid + // clang decl context. + class_type->GetForwardCompilerType (); + // If we have a specification, then the function type should have been + // made with the specification and not with this die. + DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE(specification_die_offset); + clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (spec_die); + if (spec_clang_decl_ctx) + { + LinkDeclContextToDIE(spec_clang_decl_ctx, die); + } + else + { + dwarf->GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n", + die.GetID(), + specification_die_offset); + } + type_handled = true; + } + else if (abstract_origin_die_offset != DW_INVALID_OFFSET) + { + // We have a specification which we are going to base our function + // prototype off of, so we need this type to be completed so that the + // m_die_to_decl_ctx for the method in the abstract origin has a valid + // clang decl context. + class_type->GetForwardCompilerType (); + + DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE (abstract_origin_die_offset); + clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (abs_die); + if (abs_clang_decl_ctx) + { + LinkDeclContextToDIE (abs_clang_decl_ctx, die); + } + else + { + dwarf->GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n", + die.GetID(), + abstract_origin_die_offset); + } + type_handled = true; + } + else + { + CompilerType class_opaque_type = class_type->GetForwardCompilerType (); + if (ClangASTContext::IsCXXClassType(class_opaque_type)) + { + if (class_opaque_type.IsBeingDefined ()) + { + // Neither GCC 4.2 nor clang++ currently set a valid accessibility + // in the DWARF for C++ methods... Default to public for now... + if (accessibility == eAccessNone) + accessibility = eAccessPublic; + + if (!is_static && !die.HasChildren()) + { + // We have a C++ member function with no children (this pointer!) + // and clang will get mad if we try and make a function that isn't + // well formed in the DWARF, so we will just skip it... + type_handled = true; + } + else + { + clang::CXXMethodDecl *cxx_method_decl; + // REMOVE THE CRASH DESCRIPTION BELOW + Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s", + type_name_cstr, + class_type->GetName().GetCString(), + die.GetID(), + dwarf->GetObjectFile()->GetFileSpec().GetPath().c_str()); + + const bool is_attr_used = false; + + cxx_method_decl = m_ast.AddMethodToCXXRecordType (class_opaque_type.GetOpaqueQualType(), + type_name_cstr, + clang_type, + accessibility, + is_virtual, + is_static, + is_inline, + is_explicit, + is_attr_used, + is_artificial); + + type_handled = cxx_method_decl != NULL; + + if (type_handled) + { + LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); + + Host::SetCrashDescription (NULL); + + + ClangASTMetadata metadata; + metadata.SetUserID(die.GetID()); + + if (!object_pointer_name.empty()) + { + metadata.SetObjectPtrName(object_pointer_name.c_str()); + if (log) + log->Printf ("Setting object pointer name: %s on method object %p.\n", + object_pointer_name.c_str(), + static_cast(cxx_method_decl)); + } + m_ast.SetMetadata (cxx_method_decl, metadata); + } + else + { + ignore_containing_context = true; + } + } + } + else + { + // We were asked to parse the type for a method in a class, yet the + // class hasn't been asked to complete itself through the + // clang::ExternalASTSource protocol, so we need to just have the + // class complete itself and do things the right way, then our + // DIE should then have an entry in the dwarf->m_die_to_type map. First + // we need to modify the dwarf->m_die_to_type so it doesn't think we are + // trying to parse this DIE anymore... + dwarf->m_die_to_type[die.GetDIE()] = NULL; + + // Now we get the full type to force our class type to complete itself + // using the clang::ExternalASTSource protocol which will parse all + // base classes and all methods (including the method for this DIE). + class_type->GetFullCompilerType (); + + // The type for this DIE should have been filled in the function call above + type_ptr = dwarf->m_die_to_type[die.GetDIE()]; + if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) + { + type_sp = type_ptr->shared_from_this(); + break; + } + + // FIXME This is fixing some even uglier behavior but we really need to + // uniq the methods of each class as well as the class itself. + // + type_handled = true; + } + } + } + } + } + } + + if (!type_handled) + { + // We just have a function that isn't part of a class + clang::FunctionDecl *function_decl = m_ast.CreateFunctionDeclaration (ignore_containing_context ? m_ast.GetTranslationUnitDecl() : containing_decl_ctx, + type_name_cstr, + clang_type, + storage, + is_inline); + + // if (template_param_infos.GetSize() > 0) + // { + // clang::FunctionTemplateDecl *func_template_decl = CreateFunctionTemplateDecl (containing_decl_ctx, + // function_decl, + // type_name_cstr, + // template_param_infos); + // + // CreateFunctionTemplateSpecializationInfo (function_decl, + // func_template_decl, + // template_param_infos); + // } + // Add the decl to our DIE to decl context map + assert (function_decl); + LinkDeclContextToDIE(function_decl, die); + if (!function_param_decls.empty()) + m_ast.SetFunctionParameters (function_decl, + &function_param_decls.front(), + function_param_decls.size()); + + ClangASTMetadata metadata; + metadata.SetUserID(die.GetID()); + + if (!object_pointer_name.empty()) + { + metadata.SetObjectPtrName(object_pointer_name.c_str()); + if (log) + log->Printf ("Setting object pointer name: %s on function object %p.", + object_pointer_name.c_str(), + static_cast(function_decl)); + } + m_ast.SetMetadata (function_decl, metadata); + } + } + type_sp.reset( new Type (die.GetID(), + dwarf, + type_name_const_str, + 0, + NULL, + LLDB_INVALID_UID, + Type::eEncodingIsUID, + &decl, + clang_type, + Type::eResolveStateFull)); + assert(type_sp.get()); + } + break; + + case DW_TAG_array_type: + { + // Set a bit that lets us know that we are currently parsing this + dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; + + lldb::user_id_t type_die_offset = DW_INVALID_OFFSET; + int64_t first_index = 0; + uint32_t byte_stride = 0; + uint32_t bit_stride = 0; + bool is_vector = false; + const size_t num_attributes = die.GetAttributes (attributes); + + if (num_attributes > 0) + { + uint32_t i; + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_name: + type_name_cstr = form_value.AsCString(); + type_name_const_str.SetCString(type_name_cstr); + break; + + case DW_AT_type: type_die_offset = form_value.Reference(); break; + case DW_AT_byte_size: break; // byte_size = form_value.Unsigned(); break; + case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; + case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; + case DW_AT_GNU_vector: is_vector = form_value.Boolean(); break; + case DW_AT_accessibility: break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; + case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; + case DW_AT_allocated: + case DW_AT_associated: + case DW_AT_data_location: + case DW_AT_description: + case DW_AT_ordering: + case DW_AT_start_scope: + case DW_AT_visibility: + case DW_AT_specification: + case DW_AT_abstract_origin: + case DW_AT_sibling: + break; + } + } + } + + DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); + + Type *element_type = dwarf->ResolveTypeUID(type_die_offset); + + if (element_type) + { + std::vector element_orders; + ParseChildArrayInfo(sc, die, first_index, element_orders, byte_stride, bit_stride); + if (byte_stride == 0 && bit_stride == 0) + byte_stride = element_type->GetByteSize(); + CompilerType array_element_type = element_type->GetForwardCompilerType (); + uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; + if (element_orders.size() > 0) + { + uint64_t num_elements = 0; + std::vector::const_reverse_iterator pos; + std::vector::const_reverse_iterator end = element_orders.rend(); + for (pos = element_orders.rbegin(); pos != end; ++pos) + { + num_elements = *pos; + clang_type = m_ast.CreateArrayType (array_element_type, + num_elements, + is_vector); + array_element_type = clang_type; + array_element_bit_stride = num_elements ? + array_element_bit_stride * num_elements : + array_element_bit_stride; + } + } + else + { + clang_type = m_ast.CreateArrayType (array_element_type, 0, is_vector); + } + ConstString empty_name; + type_sp.reset( new Type (die.GetID(), + dwarf, + empty_name, + array_element_bit_stride / 8, + NULL, + type_die_offset, + Type::eEncodingIsUID, + &decl, + clang_type, + Type::eResolveStateFull)); + type_sp->SetEncodingType (element_type); + } + } + } + break; + + case DW_TAG_ptr_to_member_type: + { + dw_offset_t type_die_offset = DW_INVALID_OFFSET; + dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET; + + const size_t num_attributes = die.GetAttributes (attributes); + + if (num_attributes > 0) { + uint32_t i; + for (i=0; iResolveTypeUID(type_die_offset); + Type *class_type = dwarf->ResolveTypeUID(containing_type_die_offset); + + CompilerType pointee_clang_type = pointee_type->GetForwardCompilerType (); + CompilerType class_clang_type = class_type->GetLayoutCompilerType (); + + clang_type = ClangASTContext::CreateMemberPointerType(pointee_clang_type, class_clang_type); + + byte_size = clang_type.GetByteSize(nullptr); + + type_sp.reset( new Type (die.GetID(), + dwarf, + type_name_const_str, + byte_size, + NULL, + LLDB_INVALID_UID, + Type::eEncodingIsUID, + NULL, + clang_type, + Type::eResolveStateForward)); + } + + break; + } + default: + dwarf->GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", + die.GetOffset(), + tag, + DW_TAG_value_to_name(tag)); + break; + } + + if (type_sp.get()) + { + DWARFDIE sc_parent_die = SymbolFileDWARF::GetParentSymbolContextDIE(die); + dw_tag_t sc_parent_tag = sc_parent_die.Tag(); + + SymbolContextScope * symbol_context_scope = NULL; + if (sc_parent_tag == DW_TAG_compile_unit) + { + symbol_context_scope = sc.comp_unit; + } + else if (sc.function != NULL && sc_parent_die) + { + symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); + if (symbol_context_scope == NULL) + symbol_context_scope = sc.function; + } + + if (symbol_context_scope != NULL) + { + type_sp->SetSymbolContextScope(symbol_context_scope); + } + + // We are ready to put this type into the uniqued list up at the module level + type_list->Insert (type_sp); + + dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); + } + } + else if (type_ptr != DIE_IS_BEING_PARSED) + { + type_sp = type_ptr->shared_from_this(); + } + } + return type_sp; +} + +// DWARF parsing functions + +class DWARFASTParserClang::DelayedAddObjCClassProperty +{ +public: + DelayedAddObjCClassProperty(const CompilerType &class_opaque_type, + const char *property_name, + const CompilerType &property_opaque_type, // The property type is only required if you don't have an ivar decl + clang::ObjCIvarDecl *ivar_decl, + const char *property_setter_name, + const char *property_getter_name, + uint32_t property_attributes, + const ClangASTMetadata *metadata) : + m_class_opaque_type (class_opaque_type), + m_property_name (property_name), + m_property_opaque_type (property_opaque_type), + m_ivar_decl (ivar_decl), + m_property_setter_name (property_setter_name), + m_property_getter_name (property_getter_name), + m_property_attributes (property_attributes) + { + if (metadata != NULL) + { + m_metadata_ap.reset(new ClangASTMetadata()); + *m_metadata_ap = *metadata; + } + } + + DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs) + { + *this = rhs; + } + + DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs) + { + m_class_opaque_type = rhs.m_class_opaque_type; + m_property_name = rhs.m_property_name; + m_property_opaque_type = rhs.m_property_opaque_type; + m_ivar_decl = rhs.m_ivar_decl; + m_property_setter_name = rhs.m_property_setter_name; + m_property_getter_name = rhs.m_property_getter_name; + m_property_attributes = rhs.m_property_attributes; + + if (rhs.m_metadata_ap.get()) + { + m_metadata_ap.reset (new ClangASTMetadata()); + *m_metadata_ap = *rhs.m_metadata_ap; + } + return *this; + } + + bool + Finalize() + { + ClangASTContext* ast = m_class_opaque_type.GetTypeSystem()->AsClangASTContext(); + assert(ast); + return ast->AddObjCClassProperty (m_class_opaque_type, + m_property_name, + m_property_opaque_type, + m_ivar_decl, + m_property_setter_name, + m_property_getter_name, + m_property_attributes, + m_metadata_ap.get()); + } + +private: + CompilerType m_class_opaque_type; + const char *m_property_name; + CompilerType m_property_opaque_type; + clang::ObjCIvarDecl *m_ivar_decl; + const char *m_property_setter_name; + const char *m_property_getter_name; + uint32_t m_property_attributes; + std::unique_ptr m_metadata_ap; +}; + +bool +DWARFASTParserClang::ParseTemplateDIE (const DWARFDIE &die, + ClangASTContext::TemplateParameterInfos &template_param_infos) +{ + const dw_tag_t tag = die.Tag(); + + switch (tag) + { + case DW_TAG_template_type_parameter: + case DW_TAG_template_value_parameter: + { + DWARFAttributes attributes; + const size_t num_attributes = die.GetAttributes (attributes); + const char *name = NULL; + Type *lldb_type = NULL; + CompilerType clang_type; + uint64_t uval64 = 0; + bool uval64_valid = false; + if (num_attributes > 0) + { + DWARFFormValue form_value; + for (size_t i=0; iGetForwardCompilerType (); + } + break; + + case DW_AT_const_value: + if (attributes.ExtractFormValueAtIndex(i, form_value)) + { + uval64_valid = true; + uval64 = form_value.Unsigned(); + } + break; + default: + break; + } + } + + clang::ASTContext *ast = m_ast.getASTContext(); + if (!clang_type) + clang_type = m_ast.GetBasicType(eBasicTypeVoid); + + if (clang_type) + { + bool is_signed = false; + if (name && name[0]) + template_param_infos.names.push_back(name); + else + template_param_infos.names.push_back(NULL); + + if (tag == DW_TAG_template_value_parameter && + lldb_type != NULL && + clang_type.IsIntegerType (is_signed) && + uval64_valid) + { + llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); + template_param_infos.args.push_back (clang::TemplateArgument (*ast, + llvm::APSInt(apint), + ClangASTContext::GetQualType(clang_type))); + } + else + { + template_param_infos.args.push_back (clang::TemplateArgument (ClangASTContext::GetQualType(clang_type))); + } + } + else + { + return false; + } + + } + } + return true; + + default: + break; + } + return false; +} + +bool +DWARFASTParserClang::ParseTemplateParameterInfos (const DWARFDIE &parent_die, + ClangASTContext::TemplateParameterInfos &template_param_infos) +{ + + if (!parent_die) + return false; + + Args template_parameter_names; + for (DWARFDIE die = parent_die.GetFirstChild(); + die.IsValid(); + die = die.GetSibling()) + { + const dw_tag_t tag = die.Tag(); + + switch (tag) + { + case DW_TAG_template_type_parameter: + case DW_TAG_template_value_parameter: + ParseTemplateDIE (die, template_param_infos); + break; + + default: + break; + } + } + if (template_param_infos.args.empty()) + return false; + return template_param_infos.args.size() == template_param_infos.names.size(); +} + +bool +DWARFASTParserClang::CompleteTypeFromDWARF (const DWARFDIE &die, + lldb_private::Type *type, + CompilerType &clang_type) +{ + // Disable external storage for this type so we don't get anymore + // clang::ExternalASTSource queries for this type. + m_ast.SetHasExternalStorage (clang_type.GetOpaqueQualType(), false); + + if (!die) + return false; + + const dw_tag_t tag = die.Tag(); + + SymbolFileDWARF *dwarf = die.GetDWARF(); + + Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); + if (log) + dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log, + "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...", + die.GetID(), + die.GetTagAsCString(), + type->GetName().AsCString()); + assert (clang_type); + DWARFAttributes attributes; + + switch (tag) + { + case DW_TAG_structure_type: + case DW_TAG_union_type: + case DW_TAG_class_type: + { + LayoutInfo layout_info; + + { + if (die.HasChildren()) + { + LanguageType class_language = eLanguageTypeUnknown; + if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) + { + class_language = eLanguageTypeObjC; + // For objective C we don't start the definition when + // the class is created. + ClangASTContext::StartTagDeclarationDefinition (clang_type); + } + + int tag_decl_kind = -1; + AccessType default_accessibility = eAccessNone; + if (tag == DW_TAG_structure_type) + { + tag_decl_kind = clang::TTK_Struct; + default_accessibility = eAccessPublic; + } + else if (tag == DW_TAG_union_type) + { + tag_decl_kind = clang::TTK_Union; + default_accessibility = eAccessPublic; + } + else if (tag == DW_TAG_class_type) + { + tag_decl_kind = clang::TTK_Class; + default_accessibility = eAccessPrivate; + } + + SymbolContext sc(die.GetLLDBCompileUnit()); + std::vector base_classes; + std::vector member_accessibilities; + bool is_a_class = false; + // Parse members and base classes first + DWARFDIECollection member_function_dies; + + DelayedPropertyList delayed_properties; + ParseChildMembers (sc, + die, + clang_type, + class_language, + base_classes, + member_accessibilities, + member_function_dies, + delayed_properties, + default_accessibility, + is_a_class, + layout_info); + + // Now parse any methods if there were any... + size_t num_functions = member_function_dies.Size(); + if (num_functions > 0) + { + for (size_t i=0; iResolveType(member_function_dies.GetDIEAtIndex(i)); + } + } + + if (class_language == eLanguageTypeObjC) + { + ConstString class_name (clang_type.GetTypeName()); + if (class_name) + { + DIEArray method_die_offsets; + dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); + + if (!method_die_offsets.empty()) + { + DWARFDebugInfo* debug_info = dwarf->DebugInfo(); + + const size_t num_matches = method_die_offsets.size(); + for (size_t i=0; iGetDIE (die_offset); + + if (method_die) + method_die.ResolveType (); + } + } + + for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end(); + pi != pe; + ++pi) + pi->Finalize(); + } + } + + // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we + // need to tell the clang type it is actually a class. + if (class_language != eLanguageTypeObjC) + { + if (is_a_class && tag_decl_kind != clang::TTK_Class) + m_ast.SetTagTypeKind (ClangASTContext::GetQualType(clang_type), clang::TTK_Class); + } + + // Since DW_TAG_structure_type gets used for both classes + // and structures, we may need to set any DW_TAG_member + // fields to have a "private" access if none was specified. + // When we parsed the child members we tracked that actual + // accessibility value for each DW_TAG_member in the + // "member_accessibilities" array. If the value for the + // member is zero, then it was set to the "default_accessibility" + // which for structs was "public". Below we correct this + // by setting any fields to "private" that weren't correctly + // set. + if (is_a_class && !member_accessibilities.empty()) + { + // This is a class and all members that didn't have + // their access specified are private. + m_ast.SetDefaultAccessForRecordFields (m_ast.GetAsRecordDecl(clang_type), + eAccessPrivate, + &member_accessibilities.front(), + member_accessibilities.size()); + } + + if (!base_classes.empty()) + { + // Make sure all base classes refer to complete types and not + // forward declarations. If we don't do this, clang will crash + // with an assertion in the call to clang_type.SetBaseClassesForClassType() + bool base_class_error = false; + for (auto &base_class : base_classes) + { + clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo(); + if (type_source_info) + { + CompilerType base_class_type (&m_ast, type_source_info->getType().getAsOpaquePtr()); + if (base_class_type.GetCompleteType() == false) + { + if (!base_class_error) + { + dwarf->GetObjectFile()->GetModule()->ReportError ("DWARF DIE at 0x%8.8x for class '%s' has a base class '%s' that is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s", + die.GetOffset(), + die.GetName(), + base_class_type.GetTypeName().GetCString(), + sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file"); + } + // We have no choice other than to pretend that the base class + // is complete. If we don't do this, clang will crash when we + // call setBases() inside of "clang_type.SetBaseClassesForClassType()" + // below. Since we provide layout assistance, all ivars in this + // class and other classes will be fine, this is the best we can do + // short of crashing. + + ClangASTContext::StartTagDeclarationDefinition (base_class_type); + ClangASTContext::CompleteTagDeclarationDefinition (base_class_type); + } + } + } + m_ast.SetBaseClassesForClassType (clang_type.GetOpaqueQualType(), + &base_classes.front(), + base_classes.size()); + + // Clang will copy each CXXBaseSpecifier in "base_classes" + // so we have to free them all. + ClangASTContext::DeleteBaseClassSpecifiers (&base_classes.front(), + base_classes.size()); + } + } + } + + ClangASTContext::BuildIndirectFields (clang_type); + ClangASTContext::CompleteTagDeclarationDefinition (clang_type); + + if (!layout_info.field_offsets.empty() || + !layout_info.base_offsets.empty() || + !layout_info.vbase_offsets.empty() ) + { + if (type) + layout_info.bit_size = type->GetByteSize() * 8; + if (layout_info.bit_size == 0) + layout_info.bit_size = die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; + + clang::CXXRecordDecl *record_decl = m_ast.GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); + if (record_decl) + { + if (log) + { + ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); + + if (module_sp) + { + module_sp->LogMessage (log, + "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) caching layout info for record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", + static_cast(clang_type.GetOpaqueQualType()), + static_cast(record_decl), + layout_info.bit_size, + layout_info.alignment, + static_cast(layout_info.field_offsets.size()), + static_cast(layout_info.base_offsets.size()), + static_cast(layout_info.vbase_offsets.size())); + + uint32_t idx; + { + llvm::DenseMap::const_iterator pos, + end = layout_info.field_offsets.end(); + for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx) + { + module_sp->LogMessage(log, + "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }", + static_cast(clang_type.GetOpaqueQualType()), + idx, + static_cast(pos->second), + pos->first->getNameAsString().c_str()); + } + } + + { + llvm::DenseMap::const_iterator base_pos, + base_end = layout_info.base_offsets.end(); + for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx) + { + module_sp->LogMessage(log, + "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }", + clang_type.GetOpaqueQualType(), idx, (uint32_t)base_pos->second.getQuantity(), + base_pos->first->getNameAsString().c_str()); + } + } + { + llvm::DenseMap::const_iterator vbase_pos, + vbase_end = layout_info.vbase_offsets.end(); + for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx) + { + module_sp->LogMessage(log, + "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }", + static_cast(clang_type.GetOpaqueQualType()), idx, + static_cast(vbase_pos->second.getQuantity()), + vbase_pos->first->getNameAsString().c_str()); + } + } + + } + } + m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); + } + } + } + + return (bool)clang_type; + + case DW_TAG_enumeration_type: + ClangASTContext::StartTagDeclarationDefinition (clang_type); + if (die.HasChildren()) + { + SymbolContext sc(die.GetLLDBCompileUnit()); + bool is_signed = false; + clang_type.IsIntegerType(is_signed); + ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), die); + } + ClangASTContext::CompleteTagDeclarationDefinition (clang_type); + return (bool)clang_type; + + default: + assert(false && "not a forward clang type decl!"); + break; + } + + return false; +} + +CompilerDeclContext +DWARFASTParserClang::GetDeclContextForUIDFromDWARF (const DWARFDIE &die) +{ + clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE (die); + if (clang_decl_ctx) + return CompilerDeclContext(&m_ast, clang_decl_ctx); + return CompilerDeclContext(); +} + +CompilerDeclContext +DWARFASTParserClang::GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) +{ + clang::DeclContext *clang_decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); + if (clang_decl_ctx) + return CompilerDeclContext(&m_ast, clang_decl_ctx); + return CompilerDeclContext(); +} + +size_t +DWARFASTParserClang::ParseChildEnumerators (const SymbolContext& sc, + lldb_private::CompilerType &clang_type, + bool is_signed, + uint32_t enumerator_byte_size, + const DWARFDIE &parent_die) +{ + if (!parent_die) + return 0; + + size_t enumerators_added = 0; + + for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) + { + const dw_tag_t tag = die.Tag(); + if (tag == DW_TAG_enumerator) + { + DWARFAttributes attributes; + const size_t num_child_attributes = die.GetAttributes(attributes); + if (num_child_attributes > 0) + { + const char *name = NULL; + bool got_value = false; + int64_t enum_value = 0; + Declaration decl; + + uint32_t i; + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_sibling: + break; + } + } + } + + if (name && name[0] && got_value) + { + m_ast.AddEnumerationValueToEnumerationType (clang_type.GetOpaqueQualType(), + m_ast.GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), + decl, + name, + enum_value, + enumerator_byte_size * 8); + ++enumerators_added; + } + } + } + } + return enumerators_added; +} + +#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) + +class DIEStack +{ +public: + + void Push (const DWARFDIE &die) + { + m_dies.push_back (die); + } + + + void LogDIEs (Log *log) + { + StreamString log_strm; + const size_t n = m_dies.size(); + log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n); + for (size_t i=0; iPutCString(log_strm.GetData()); + } + void Pop () + { + m_dies.pop_back(); + } + + class ScopedPopper + { + public: + ScopedPopper (DIEStack &die_stack) : + m_die_stack (die_stack), + m_valid (false) + { + } + + void + Push (const DWARFDIE &die) + { + m_valid = true; + m_die_stack.Push (die); + } + + ~ScopedPopper () + { + if (m_valid) + m_die_stack.Pop(); + } + + + + protected: + DIEStack &m_die_stack; + bool m_valid; + }; + +protected: + typedef std::vector Stack; + Stack m_dies; +}; +#endif + + +Function * +DWARFASTParserClang::ParseFunctionFromDWARF (const SymbolContext& sc, + const DWARFDIE &die) +{ + DWARFRangeList func_ranges; + const char *name = NULL; + const char *mangled = NULL; + int decl_file = 0; + int decl_line = 0; + int decl_column = 0; + int call_file = 0; + int call_line = 0; + int call_column = 0; + DWARFExpression frame_base(die.GetCU()); + + const dw_tag_t tag = die.Tag(); + + if (tag != DW_TAG_subprogram) + return NULL; + + if (die.GetDIENamesAndRanges (name, + mangled, + func_ranges, + decl_file, + decl_line, + decl_column, + call_file, + call_line, + call_column, + &frame_base)) + { + + // Union of all ranges in the function DIE (if the function is discontiguous) + AddressRange func_range; + lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); + lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); + if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr) + { + ModuleSP module_sp (die.GetModule()); + func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList()); + if (func_range.GetBaseAddress().IsValid()) + func_range.SetByteSize(highest_func_addr - lowest_func_addr); + } + + if (func_range.GetBaseAddress().IsValid()) + { + Mangled func_name; + if (mangled) + func_name.SetValue(ConstString(mangled), true); + else if (die.GetParent().Tag() == DW_TAG_compile_unit && + LanguageRuntime::LanguageIsCPlusPlus(die.GetLanguage()) && + name && strcmp(name, "main") != 0) + { + // If the mangled name is not present in the DWARF, generate the demangled name + // using the decl context. We skip if the function is "main" as its name is + // never mangled. + bool is_static = false; + bool is_variadic = false; + unsigned type_quals = 0; + std::vector param_types; + std::vector param_decls; + DWARFDeclContext decl_ctx; + StreamString sstr; + + die.GetDWARFDeclContext(decl_ctx); + sstr << decl_ctx.GetQualifiedName(); + + clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE(die, nullptr); + ParseChildParameters(sc, + containing_decl_ctx, + die, + true, + is_static, + is_variadic, + param_types, + param_decls, + type_quals); + sstr << "("; + for (size_t i = 0; i < param_types.size(); i++) + { + if (i > 0) + sstr << ", "; + sstr << param_types[i].GetTypeName(); + } + if (is_variadic) + sstr << ", ..."; + sstr << ")"; + if (type_quals & clang::Qualifiers::Const) + sstr << " const"; + + func_name.SetValue(ConstString(sstr.GetData()), false); + } + else + func_name.SetValue(ConstString(name), false); + + FunctionSP func_sp; + std::unique_ptr decl_ap; + if (decl_file != 0 || decl_line != 0 || decl_column != 0) + decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), + decl_line, + decl_column)); + + SymbolFileDWARF *dwarf = die.GetDWARF(); + // Supply the type _only_ if it has already been parsed + Type *func_type = dwarf->m_die_to_type.lookup (die.GetDIE()); + + assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); + + if (dwarf->FixupAddress (func_range.GetBaseAddress())) + { + const user_id_t func_user_id = die.GetID(); + func_sp.reset(new Function (sc.comp_unit, + func_user_id, // UserID is the DIE offset + func_user_id, + func_name, + func_type, + func_range)); // first address range + + if (func_sp.get() != NULL) + { + if (frame_base.IsValid()) + func_sp->GetFrameBaseExpression() = frame_base; + sc.comp_unit->AddFunction(func_sp); + return func_sp.get(); + } + } + } + } + return NULL; +} + + +size_t +DWARFASTParserClang::ParseChildMembers (const SymbolContext& sc, + const DWARFDIE &parent_die, + CompilerType &class_clang_type, + const LanguageType class_language, + std::vector& base_classes, + std::vector& member_accessibilities, + DWARFDIECollection& member_function_dies, + DelayedPropertyList& delayed_properties, + AccessType& default_accessibility, + bool &is_a_class, + LayoutInfo &layout_info) +{ + if (!parent_die) + return 0; + + size_t count = 0; + uint32_t member_idx = 0; + BitfieldInfo last_field_info; + + ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); + ClangASTContext* ast = class_clang_type.GetTypeSystem()->AsClangASTContext(); + if (ast == nullptr) + return 0; + + for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) + { + dw_tag_t tag = die.Tag(); + + switch (tag) + { + case DW_TAG_member: + case DW_TAG_APPLE_property: + { + DWARFAttributes attributes; + const size_t num_attributes = die.GetAttributes (attributes); + if (num_attributes > 0) + { + Declaration decl; + //DWARFExpression location; + const char *name = NULL; + const char *prop_name = NULL; + const char *prop_getter_name = NULL; + const char *prop_setter_name = NULL; + uint32_t prop_attributes = 0; + + + bool is_artificial = false; + lldb::user_id_t encoding_uid = LLDB_INVALID_UID; + AccessType accessibility = eAccessNone; + uint32_t member_byte_offset = UINT32_MAX; + size_t byte_size = 0; + size_t bit_offset = 0; + size_t bit_size = 0; + bool is_external = false; // On DW_TAG_members, this means the member is static + uint32_t i; + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_name: name = form_value.AsCString(); break; + case DW_AT_type: encoding_uid = form_value.Reference(); break; + case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; + case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; + case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; + case DW_AT_data_member_location: + if (form_value.BlockData()) + { + Value initialValue(0); + Value memberOffset(0); + const DWARFDataExtractor& debug_info_data = die.GetDWARF()->get_debug_info_data(); + uint32_t block_length = form_value.Unsigned(); + uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); + if (DWARFExpression::Evaluate(NULL, // ExecutionContext * + NULL, // ClangExpressionVariableList * + NULL, // ClangExpressionDeclMap * + NULL, // RegisterContext * + module_sp, + debug_info_data, + die.GetCU(), + block_offset, + block_length, + eRegisterKindDWARF, + &initialValue, + memberOffset, + NULL)) + { + member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); + } + } + else + { + // With DWARF 3 and later, if the value is an integer constant, + // this form value is the offset in bytes from the beginning + // of the containing entity. + member_byte_offset = form_value.Unsigned(); + } + break; + + case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; + case DW_AT_artificial: is_artificial = form_value.Boolean(); break; + case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(); + break; + case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(); + break; + case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(); + break; + case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; + case DW_AT_external: is_external = form_value.Boolean(); break; + + default: + case DW_AT_declaration: + case DW_AT_description: + case DW_AT_mutable: + case DW_AT_visibility: + case DW_AT_sibling: + break; + } + } + } + + if (prop_name) + { + ConstString fixed_getter; + ConstString fixed_setter; + + // Check if the property getter/setter were provided as full + // names. We want basenames, so we extract them. + + if (prop_getter_name && prop_getter_name[0] == '-') + { + ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true); + prop_getter_name = prop_getter_method.GetSelector().GetCString(); + } + + if (prop_setter_name && prop_setter_name[0] == '-') + { + ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true); + prop_setter_name = prop_setter_method.GetSelector().GetCString(); + } + + // If the names haven't been provided, they need to be + // filled in. + + if (!prop_getter_name) + { + prop_getter_name = prop_name; + } + if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly)) + { + StreamString ss; + + ss.Printf("set%c%s:", + toupper(prop_name[0]), + &prop_name[1]); + + fixed_setter.SetCString(ss.GetData()); + prop_setter_name = fixed_setter.GetCString(); + } + } + + // Clang has a DWARF generation bug where sometimes it + // represents fields that are references with bad byte size + // and bit size/offset information such as: + // + // DW_AT_byte_size( 0x00 ) + // DW_AT_bit_size( 0x40 ) + // DW_AT_bit_offset( 0xffffffffffffffc0 ) + // + // So check the bit offset to make sure it is sane, and if + // the values are not sane, remove them. If we don't do this + // then we will end up with a crash if we try to use this + // type in an expression when clang becomes unhappy with its + // recycled debug info. + + if (bit_offset > 128) + { + bit_size = 0; + bit_offset = 0; + } + + // FIXME: Make Clang ignore Objective-C accessibility for expressions + if (class_language == eLanguageTypeObjC || + class_language == eLanguageTypeObjC_plus_plus) + accessibility = eAccessNone; + + if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) + { + // Not all compilers will mark the vtable pointer + // member as artificial (llvm-gcc). We can't have + // the virtual members in our classes otherwise it + // throws off all child offsets since we end up + // having and extra pointer sized member in our + // class layouts. + is_artificial = true; + } + + // Handle static members + if (is_external && member_byte_offset == UINT32_MAX) + { + Type *var_type = die.ResolveTypeUID(encoding_uid); + + if (var_type) + { + if (accessibility == eAccessNone) + accessibility = eAccessPublic; + ClangASTContext::AddVariableToRecordType (class_clang_type, + name, + var_type->GetLayoutCompilerType (), + accessibility); + } + break; + } + + if (is_artificial == false) + { + Type *member_type = die.ResolveTypeUID(encoding_uid); + + clang::FieldDecl *field_decl = NULL; + if (tag == DW_TAG_member) + { + if (member_type) + { + if (accessibility == eAccessNone) + accessibility = default_accessibility; + member_accessibilities.push_back(accessibility); + + uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8)); + if (bit_size > 0) + { + + BitfieldInfo this_field_info; + this_field_info.bit_offset = field_bit_offset; + this_field_info.bit_size = bit_size; + + ///////////////////////////////////////////////////////////// + // How to locate a field given the DWARF debug information + // + // AT_byte_size indicates the size of the word in which the + // bit offset must be interpreted. + // + // AT_data_member_location indicates the byte offset of the + // word from the base address of the structure. + // + // AT_bit_offset indicates how many bits into the word + // (according to the host endianness) the low-order bit of + // the field starts. AT_bit_offset can be negative. + // + // AT_bit_size indicates the size of the field in bits. + ///////////////////////////////////////////////////////////// + + if (byte_size == 0) + byte_size = member_type->GetByteSize(); + + if (die.GetDWARF()->GetObjectFile()->GetByteOrder() == eByteOrderLittle) + { + this_field_info.bit_offset += byte_size * 8; + this_field_info.bit_offset -= (bit_offset + bit_size); + } + else + { + this_field_info.bit_offset += bit_offset; + } + + // Update the field bit offset we will report for layout + field_bit_offset = this_field_info.bit_offset; + + // If the member to be emitted did not start on a character boundary and there is + // empty space between the last field and this one, then we need to emit an + // anonymous member filling up the space up to its start. There are three cases + // here: + // + // 1 If the previous member ended on a character boundary, then we can emit an + // anonymous member starting at the most recent character boundary. + // + // 2 If the previous member did not end on a character boundary and the distance + // from the end of the previous member to the current member is less than a + // word width, then we can emit an anonymous member starting right after the + // previous member and right before this member. + // + // 3 If the previous member did not end on a character boundary and the distance + // from the end of the previous member to the current member is greater than + // or equal a word width, then we act as in Case 1. + + const uint64_t character_width = 8; + const uint64_t word_width = 32; + + // Objective-C has invalid DW_AT_bit_offset values in older versions + // of clang, so we have to be careful and only insert unnamed bitfields + // if we have a new enough clang. + bool detect_unnamed_bitfields = true; + + if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus) + detect_unnamed_bitfields = die.GetCU()->Supports_unnamed_objc_bitfields (); + + if (detect_unnamed_bitfields) + { + BitfieldInfo anon_field_info; + + if ((this_field_info.bit_offset % character_width) != 0) // not char aligned + { + uint64_t last_field_end = 0; + + if (last_field_info.IsValid()) + last_field_end = last_field_info.bit_offset + last_field_info.bit_size; + + if (this_field_info.bit_offset != last_field_end) + { + if (((last_field_end % character_width) == 0) || // case 1 + (this_field_info.bit_offset - last_field_end >= word_width)) // case 3 + { + anon_field_info.bit_size = this_field_info.bit_offset % character_width; + anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size; + } + else // case 2 + { + anon_field_info.bit_size = this_field_info.bit_offset - last_field_end; + anon_field_info.bit_offset = last_field_end; + } + } + } + + if (anon_field_info.IsValid()) + { + clang::FieldDecl *unnamed_bitfield_decl = + ClangASTContext::AddFieldToRecordType (class_clang_type, + NULL, + m_ast.GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width), + accessibility, + anon_field_info.bit_size); + + layout_info.field_offsets.insert( + std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset)); + } + } + last_field_info = this_field_info; + } + else + { + last_field_info.Clear(); + } + + CompilerType member_clang_type = member_type->GetLayoutCompilerType (); + + { + // Older versions of clang emit array[0] and array[1] in the same way (). + // If the current field is at the end of the structure, then there is definitely no room for extra + // elements and we override the type to array[0]. + + CompilerType member_array_element_type; + uint64_t member_array_size; + bool member_array_is_incomplete; + + if (member_clang_type.IsArrayType(&member_array_element_type, + &member_array_size, + &member_array_is_incomplete) && + !member_array_is_incomplete) + { + uint64_t parent_byte_size = parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX); + + if (member_byte_offset >= parent_byte_size) + { + if (member_array_size != 1) + { + module_sp->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which extends beyond the bounds of 0x%8.8" PRIx64, + die.GetID(), + name, + encoding_uid, + parent_die.GetID()); + } + + member_clang_type = m_ast.CreateArrayType(member_array_element_type, 0, false); + } + } + } + + field_decl = ClangASTContext::AddFieldToRecordType (class_clang_type, + name, + member_clang_type, + accessibility, + bit_size); + + m_ast.SetMetadataAsUserID (field_decl, die.GetID()); + + layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset)); + } + else + { + if (name) + module_sp->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed", + die.GetID(), + name, + encoding_uid); + else + module_sp->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed", + die.GetID(), + encoding_uid); + } + } + + if (prop_name != NULL && member_type) + { + clang::ObjCIvarDecl *ivar_decl = NULL; + + if (field_decl) + { + ivar_decl = clang::dyn_cast(field_decl); + assert (ivar_decl != NULL); + } + + ClangASTMetadata metadata; + metadata.SetUserID (die.GetID()); + delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type, + prop_name, + member_type->GetLayoutCompilerType (), + ivar_decl, + prop_setter_name, + prop_getter_name, + prop_attributes, + &metadata)); + + if (ivar_decl) + m_ast.SetMetadataAsUserID (ivar_decl, die.GetID()); + } + } + } + ++member_idx; + } + break; + + case DW_TAG_subprogram: + // Let the type parsing code handle this one for us. + member_function_dies.Append (die); + break; + + case DW_TAG_inheritance: + { + is_a_class = true; + if (default_accessibility == eAccessNone) + default_accessibility = eAccessPrivate; + // TODO: implement DW_TAG_inheritance type parsing + DWARFAttributes attributes; + const size_t num_attributes = die.GetAttributes (attributes); + if (num_attributes > 0) + { + Declaration decl; + DWARFExpression location(die.GetCU()); + lldb::user_id_t encoding_uid = LLDB_INVALID_UID; + AccessType accessibility = default_accessibility; + bool is_virtual = false; + bool is_base_of_class = true; + off_t member_byte_offset = 0; + uint32_t i; + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_type: encoding_uid = form_value.Reference(); break; + case DW_AT_data_member_location: + if (form_value.BlockData()) + { + Value initialValue(0); + Value memberOffset(0); + const DWARFDataExtractor& debug_info_data = die.GetDWARF()->get_debug_info_data(); + uint32_t block_length = form_value.Unsigned(); + uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); + if (DWARFExpression::Evaluate (NULL, + NULL, + NULL, + NULL, + module_sp, + debug_info_data, + die.GetCU(), + block_offset, + block_length, + eRegisterKindDWARF, + &initialValue, + memberOffset, + NULL)) + { + member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); + } + } + else + { + // With DWARF 3 and later, if the value is an integer constant, + // this form value is the offset in bytes from the beginning + // of the containing entity. + member_byte_offset = form_value.Unsigned(); + } + break; + + case DW_AT_accessibility: + accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); + break; + + case DW_AT_virtuality: + is_virtual = form_value.Boolean(); + break; + + case DW_AT_sibling: + break; + + default: + break; + } + } + } + + Type *base_class_type = die.ResolveTypeUID(encoding_uid); + if (base_class_type == NULL) + { + module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to resolve the base class at 0x%8.8" PRIx64 " from enclosing type 0x%8.8x. \nPlease file a bug and attach the file at the start of this error message", + die.GetOffset(), + encoding_uid, + parent_die.GetOffset()); + break; + } + + CompilerType base_class_clang_type = base_class_type->GetFullCompilerType (); + assert (base_class_clang_type); + if (class_language == eLanguageTypeObjC) + { + ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); + } + else + { + base_classes.push_back (ast->CreateBaseClassSpecifier (base_class_clang_type.GetOpaqueQualType(), + accessibility, + is_virtual, + is_base_of_class)); + + if (is_virtual) + { + // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't + // give us a constant offset, but gives us a DWARF expressions that requires an actual object + // in memory. the DW_AT_data_member_location for a virtual base class looks like: + // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus ) + // Given this, there is really no valid response we can give to clang for virtual base + // class offsets, and this should eventually be removed from LayoutRecordType() in the external + // AST source in clang. + } + else + { + layout_info.base_offsets.insert( + std::make_pair(ast->GetAsCXXRecordDecl(base_class_clang_type.GetOpaqueQualType()), + clang::CharUnits::fromQuantity(member_byte_offset))); + } + } + } + } + break; + + default: + break; + } + } + + return count; +} + + +size_t +DWARFASTParserClang::ParseChildParameters (const SymbolContext& sc, + clang::DeclContext *containing_decl_ctx, + const DWARFDIE &parent_die, + bool skip_artificial, + bool &is_static, + bool &is_variadic, + std::vector& function_param_types, + std::vector& function_param_decls, + unsigned &type_quals) +{ + if (!parent_die) + return 0; + + size_t arg_idx = 0; + for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) + { + const dw_tag_t tag = die.Tag(); + switch (tag) + { + case DW_TAG_formal_parameter: + { + DWARFAttributes attributes; + const size_t num_attributes = die.GetAttributes(attributes); + if (num_attributes > 0) + { + const char *name = NULL; + Declaration decl; + dw_offset_t param_type_die_offset = DW_INVALID_OFFSET; + bool is_artificial = false; + // one of None, Auto, Register, Extern, Static, PrivateExtern + + clang::StorageClass storage = clang::SC_None; + uint32_t i; + for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; + case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; + case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; + case DW_AT_name: name = form_value.AsCString(); + break; + case DW_AT_type: param_type_die_offset = form_value.Reference(); break; + case DW_AT_artificial: is_artificial = form_value.Boolean(); break; + case DW_AT_location: + // if (form_value.BlockData()) + // { + // const DWARFDataExtractor& debug_info_data = debug_info(); + // uint32_t block_length = form_value.Unsigned(); + // DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); + // } + // else + // { + // } + // break; + case DW_AT_const_value: + case DW_AT_default_value: + case DW_AT_description: + case DW_AT_endianity: + case DW_AT_is_optional: + case DW_AT_segment: + case DW_AT_variable_parameter: + default: + case DW_AT_abstract_origin: + case DW_AT_sibling: + break; + } + } + } + + bool skip = false; + if (skip_artificial) + { + if (is_artificial) + { + // In order to determine if a C++ member function is + // "const" we have to look at the const-ness of "this"... + // Ugly, but that + if (arg_idx == 0) + { + if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) + { + // Often times compilers omit the "this" name for the + // specification DIEs, so we can't rely upon the name + // being in the formal parameter DIE... + if (name == NULL || ::strcmp(name, "this")==0) + { + Type *this_type = die.ResolveTypeUID (param_type_die_offset); + if (this_type) + { + uint32_t encoding_mask = this_type->GetEncodingMask(); + if (encoding_mask & Type::eEncodingIsPointerUID) + { + is_static = false; + + if (encoding_mask & (1u << Type::eEncodingIsConstUID)) + type_quals |= clang::Qualifiers::Const; + if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) + type_quals |= clang::Qualifiers::Volatile; + } + } + } + } + } + skip = true; + } + else + { + + // HACK: Objective C formal parameters "self" and "_cmd" + // are not marked as artificial in the DWARF... + CompileUnit *comp_unit = die.GetLLDBCompileUnit(); + if (comp_unit) + { + switch (comp_unit->GetLanguage()) + { + case eLanguageTypeObjC: + case eLanguageTypeObjC_plus_plus: + if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) + skip = true; + break; + default: + break; + } + } + } + } + + if (!skip) + { + Type *type = die.ResolveTypeUID(param_type_die_offset); + if (type) + { + function_param_types.push_back (type->GetForwardCompilerType ()); + + clang::ParmVarDecl *param_var_decl = m_ast.CreateParameterDeclaration (name, + type->GetForwardCompilerType (), + storage); + assert(param_var_decl); + function_param_decls.push_back(param_var_decl); + + m_ast.SetMetadataAsUserID (param_var_decl, die.GetID()); + } + } + } + arg_idx++; + } + break; + + case DW_TAG_unspecified_parameters: + is_variadic = true; + break; + + case DW_TAG_template_type_parameter: + case DW_TAG_template_value_parameter: + // The one caller of this was never using the template_param_infos, + // and the local variable was taking up a large amount of stack space + // in SymbolFileDWARF::ParseType() so this was removed. If we ever need + // the template params back, we can add them back. + // ParseTemplateDIE (dwarf_cu, die, template_param_infos); + break; + + default: + break; + } + } + return arg_idx; +} + +void +DWARFASTParserClang::ParseChildArrayInfo (const SymbolContext& sc, + const DWARFDIE &parent_die, + int64_t& first_index, + std::vector& element_orders, + uint32_t& byte_stride, + uint32_t& bit_stride) +{ + if (!parent_die) + return; + + for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) + { + const dw_tag_t tag = die.Tag(); + switch (tag) + { + case DW_TAG_subrange_type: + { + DWARFAttributes attributes; + const size_t num_child_attributes = die.GetAttributes(attributes); + if (num_child_attributes > 0) + { + uint64_t num_elements = 0; + uint64_t lower_bound = 0; + uint64_t upper_bound = 0; + bool upper_bound_valid = false; + uint32_t i; + for (i=0; i= lower_bound) + num_elements = upper_bound - lower_bound + 1; + } + + element_orders.push_back (num_elements); + } + } + break; + } + } +} + +clang::DeclContext * +DWARFASTParserClang::GetClangDeclContextForDIE (const DWARFDIE &die) +{ + if (die) + { + clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE (die); + if (decl_ctx) + return decl_ctx; + + bool try_parsing_type = true; + switch (die.Tag()) + { + case DW_TAG_compile_unit: + decl_ctx = m_ast.GetTranslationUnitDecl(); + try_parsing_type = false; + break; + + case DW_TAG_namespace: + decl_ctx = ResolveNamespaceDIE (die); + try_parsing_type = false; + break; + + default: + break; + } + + if (decl_ctx == nullptr && try_parsing_type) + { + Type* type = die.GetDWARF()->ResolveType (die); + if (type) + decl_ctx = GetCachedClangDeclContextForDIE (die); + } + + if (decl_ctx) + { + LinkDeclContextToDIE (decl_ctx, die); + return decl_ctx; + } + } + return nullptr; +} + +clang::NamespaceDecl * +DWARFASTParserClang::ResolveNamespaceDIE (const DWARFDIE &die) +{ + if (die && die.Tag() == DW_TAG_namespace) + { + // See if we already parsed this namespace DIE and associated it with a + // uniqued namespace declaration + clang::NamespaceDecl *namespace_decl = static_cast(m_die_to_decl_ctx[die.GetDIE()]); + if (namespace_decl) + return namespace_decl; + else + { + const char *namespace_name = die.GetName(); + clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); + namespace_decl = m_ast.GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); + Log *log = nullptr;// (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); + if (log) + { + SymbolFileDWARF *dwarf = die.GetDWARF(); + if (namespace_name) + { + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", + static_cast(m_ast.getASTContext()), + die.GetID(), + namespace_name, + static_cast(namespace_decl), + static_cast(namespace_decl->getOriginalNamespace())); + } + else + { + dwarf->GetObjectFile()->GetModule()->LogMessage (log, + "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", + static_cast(m_ast.getASTContext()), + die.GetID(), + static_cast(namespace_decl), + static_cast(namespace_decl->getOriginalNamespace())); + } + } + + if (namespace_decl) + LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); + return namespace_decl; + } + } + return nullptr; +} + +clang::DeclContext * +DWARFASTParserClang::GetClangDeclContextContainingDIE (const DWARFDIE &die, + DWARFDIE *decl_ctx_die_copy) +{ + SymbolFileDWARF *dwarf = die.GetDWARF(); + + DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE (die); + + if (decl_ctx_die_copy) + *decl_ctx_die_copy = decl_ctx_die; + + if (decl_ctx_die) + { + clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE (decl_ctx_die); + if (clang_decl_ctx) + return clang_decl_ctx; + } + return m_ast.GetTranslationUnitDecl(); +} + + + + + +clang::DeclContext * +DWARFASTParserClang::GetCachedClangDeclContextForDIE (const DWARFDIE &die) +{ + if (die) + { + DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); + if (pos != m_die_to_decl_ctx.end()) + return pos->second; + } + return nullptr; +} + +void +DWARFASTParserClang::LinkDeclContextToDIE (clang::DeclContext *decl_ctx, const DWARFDIE &die) +{ + m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; + // There can be many DIEs for a single decl context + m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); +} + +bool +DWARFASTParserClang::CopyUniqueClassMethodTypes (const DWARFDIE &src_class_die, + const DWARFDIE &dst_class_die, + lldb_private::Type *class_type, + DWARFDIECollection &failures) +{ + if (!class_type || !src_class_die || !dst_class_die) + return false; + if (src_class_die.Tag() != dst_class_die.Tag()) + return false; + + // We need to complete the class type so we can get all of the method types + // parsed so we can then unique those types to their equivalent counterparts + // in "dst_cu" and "dst_class_die" + class_type->GetFullCompilerType (); + + DWARFDIE src_die; + DWARFDIE dst_die; + UniqueCStringMap src_name_to_die; + UniqueCStringMap dst_name_to_die; + UniqueCStringMap src_name_to_die_artificial; + UniqueCStringMap dst_name_to_die_artificial; + for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); src_die = src_die.GetSibling()) + { + if (src_die.Tag() == DW_TAG_subprogram) + { + // Make sure this is a declaration and not a concrete instance by looking + // for DW_AT_declaration set to 1. Sometimes concrete function instances + // are placed inside the class definitions and shouldn't be included in + // the list of things are are tracking here. + if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) + { + const char *src_name = src_die.GetMangledName (); + if (src_name) + { + ConstString src_const_name(src_name); + if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) + src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die); + else + src_name_to_die.Append(src_const_name.GetCString(), src_die); + } + } + } + } + for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); dst_die = dst_die.GetSibling()) + { + if (dst_die.Tag() == DW_TAG_subprogram) + { + // Make sure this is a declaration and not a concrete instance by looking + // for DW_AT_declaration set to 1. Sometimes concrete function instances + // are placed inside the class definitions and shouldn't be included in + // the list of things are are tracking here. + if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) + { + const char *dst_name = dst_die.GetMangledName (); + if (dst_name) + { + ConstString dst_const_name(dst_name); + if ( dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) + dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die); + else + dst_name_to_die.Append(dst_const_name.GetCString(), dst_die); + } + } + } + } + const uint32_t src_size = src_name_to_die.GetSize (); + const uint32_t dst_size = dst_name_to_die.GetSize (); + Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION)); + + // Is everything kosher so we can go through the members at top speed? + bool fast_path = true; + + if (src_size != dst_size) + { + if (src_size != 0 && dst_size != 0) + { + if (log) + log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, but they didn't have the same size (src=%d, dst=%d)", + src_class_die.GetOffset(), + dst_class_die.GetOffset(), + src_size, + dst_size); + } + + fast_path = false; + } + + uint32_t idx; + + if (fast_path) + { + for (idx = 0; idx < src_size; ++idx) + { + src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); + dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); + + if (src_die.Tag() != dst_die.Tag()) + { + if (log) + log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", + src_class_die.GetOffset(), + dst_class_die.GetOffset(), + src_die.GetOffset(), + src_die.GetTagAsCString(), + dst_die.GetOffset(), + dst_die.GetTagAsCString()); + fast_path = false; + } + + const char *src_name = src_die.GetMangledName (); + const char *dst_name = dst_die.GetMangledName (); + + // Make sure the names match + if (src_name == dst_name || (strcmp (src_name, dst_name) == 0)) + continue; + + if (log) + log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", + src_class_die.GetOffset(), + dst_class_die.GetOffset(), + src_die.GetOffset(), + src_name, + dst_die.GetOffset(), + dst_name); + + fast_path = false; + } + } + + DWARFASTParserClang *src_dwarf_ast_parser = (DWARFASTParserClang *)src_die.GetDWARFParser(); + DWARFASTParserClang *dst_dwarf_ast_parser = (DWARFASTParserClang *)dst_die.GetDWARFParser(); + + // Now do the work of linking the DeclContexts and Types. + if (fast_path) + { + // We can do this quickly. Just run across the tables index-for-index since + // we know each node has matching names and tags. + for (idx = 0; idx < src_size; ++idx) + { + src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); + dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); + + clang::DeclContext *src_decl_ctx = src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; + if (src_decl_ctx) + { + if (log) + log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", + static_cast(src_decl_ctx), + src_die.GetOffset(), dst_die.GetOffset()); + dst_dwarf_ast_parser->LinkDeclContextToDIE (src_decl_ctx, dst_die); + } + else + { + if (log) + log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", + src_die.GetOffset(), dst_die.GetOffset()); + } + + Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; + if (src_child_type) + { + if (log) + log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", + static_cast(src_child_type), + src_child_type->GetID(), + src_die.GetOffset(), dst_die.GetOffset()); + dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; + } + else + { + if (log) + log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); + } + } + } + else + { + // We must do this slowly. For each member of the destination, look + // up a member in the source with the same name, check its tag, and + // unique them if everything matches up. Report failures. + + if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) + { + src_name_to_die.Sort(); + + for (idx = 0; idx < dst_size; ++idx) + { + const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx); + dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); + src_die = src_name_to_die.Find(dst_name, DWARFDIE()); + + if (src_die && (src_die.Tag() == dst_die.Tag())) + { + clang::DeclContext *src_decl_ctx = src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; + if (src_decl_ctx) + { + if (log) + log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", + static_cast(src_decl_ctx), + src_die.GetOffset(), + dst_die.GetOffset()); + dst_dwarf_ast_parser->LinkDeclContextToDIE (src_decl_ctx, dst_die); + } + else + { + if (log) + log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); + } + + Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; + if (src_child_type) + { + if (log) + log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", + static_cast(src_child_type), + src_child_type->GetID(), + src_die.GetOffset(), + dst_die.GetOffset()); + dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; + } + else + { + if (log) + log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); + } + } + else + { + if (log) + log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die.GetOffset()); + + failures.Append(dst_die); + } + } + } + } + + const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize (); + const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize (); + + if (src_size_artificial && dst_size_artificial) + { + dst_name_to_die_artificial.Sort(); + + for (idx = 0; idx < src_size_artificial; ++idx) + { + const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx); + src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx); + dst_die = dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); + + if (dst_die) + { + // Both classes have the artificial types, link them + clang::DeclContext *src_decl_ctx = src_dwarf_ast_parser->m_die_to_decl_ctx[src_die.GetDIE()]; + if (src_decl_ctx) + { + if (log) + log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", + static_cast(src_decl_ctx), + src_die.GetOffset(), dst_die.GetOffset()); + dst_dwarf_ast_parser->LinkDeclContextToDIE (src_decl_ctx, dst_die); + } + else + { + if (log) + log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); + } + + Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; + if (src_child_type) + { + if (log) + log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", + static_cast(src_child_type), + src_child_type->GetID(), + src_die.GetOffset(), dst_die.GetOffset()); + dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; + } + else + { + if (log) + log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); + } + } + } + } + + if (dst_size_artificial) + { + for (idx = 0; idx < dst_size_artificial; ++idx) + { + const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx); + dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx); + if (log) + log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die.GetOffset(), dst_name_artificial); + + failures.Append(dst_die); + } + } + + return (failures.Size() != 0); +} + + +bool +DWARFASTParserClang::LayoutRecordType(const clang::RecordDecl *record_decl, + uint64_t &bit_size, + uint64_t &alignment, + llvm::DenseMap &field_offsets, + llvm::DenseMap &base_offsets, + llvm::DenseMap &vbase_offsets) +{ + RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl); + bool success = false; + base_offsets.clear(); + vbase_offsets.clear(); + if (pos != m_record_decl_to_layout_map.end()) + { + bit_size = pos->second.bit_size; + alignment = pos->second.alignment; + field_offsets.swap(pos->second.field_offsets); + base_offsets.swap (pos->second.base_offsets); + vbase_offsets.swap (pos->second.vbase_offsets); + m_record_decl_to_layout_map.erase(pos); + success = true; + } + else + { + bit_size = 0; + alignment = 0; + field_offsets.clear(); + } + return success; +} diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h new file mode 100644 index 000000000000..0ce260a89f29 --- /dev/null +++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h @@ -0,0 +1,169 @@ +//===-- DWARFASTParserClang.h -----------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef SymbolFileDWARF_DWARFASTParserClang_h_ +#define SymbolFileDWARF_DWARFASTParserClang_h_ + +#include "DWARFDefines.h" +#include "DWARFASTParser.h" + +#include "llvm/ADT/DenseMap.h" +#include "llvm/ADT/SmallPtrSet.h" +#include "llvm/ADT/SmallVector.h" +#include "clang/AST/CharUnits.h" + +#include "lldb/Core/ClangForward.h" +#include "lldb/Core/PluginInterface.h" +#include "lldb/Symbol/ClangASTContext.h" + +class DWARFDebugInfoEntry; +class DWARFDIECollection; + +class DWARFASTParserClang : public DWARFASTParser +{ +public: + DWARFASTParserClang (lldb_private::ClangASTContext &ast); + + virtual ~DWARFASTParserClang (); + + lldb::TypeSP + ParseTypeFromDWARF (const lldb_private::SymbolContext& sc, + const DWARFDIE &die, + lldb_private::Log *log, + bool *type_is_new_ptr) override; + + + virtual lldb_private::Function * + ParseFunctionFromDWARF (const lldb_private::SymbolContext& sc, + const DWARFDIE &die) override; + + virtual bool + CompleteTypeFromDWARF (const DWARFDIE &die, + lldb_private::Type *type, + lldb_private::CompilerType &clang_type) override; + + virtual lldb_private::CompilerDeclContext + GetDeclContextForUIDFromDWARF (const DWARFDIE &die) override; + + virtual lldb_private::CompilerDeclContext + GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) override; + + bool + LayoutRecordType(const clang::RecordDecl *record_decl, + uint64_t &bit_size, + uint64_t &alignment, + llvm::DenseMap &field_offsets, + llvm::DenseMap &base_offsets, + llvm::DenseMap &vbase_offsets); +protected: + + class DelayedAddObjCClassProperty; + typedef std::vector DelayedPropertyList; + + struct LayoutInfo + { + LayoutInfo () : + bit_size(0), + alignment(0), + field_offsets(), + base_offsets(), + vbase_offsets() + { + } + uint64_t bit_size; + uint64_t alignment; + llvm::DenseMap field_offsets; + llvm::DenseMap base_offsets; + llvm::DenseMap vbase_offsets; + }; + + clang::NamespaceDecl * + ResolveNamespaceDIE (const DWARFDIE &die); + + typedef llvm::DenseMap RecordDeclToLayoutMap; + + bool + ParseTemplateDIE (const DWARFDIE &die, + lldb_private::ClangASTContext::TemplateParameterInfos &template_param_infos); + bool + ParseTemplateParameterInfos (const DWARFDIE &parent_die, + lldb_private::ClangASTContext::TemplateParameterInfos &template_param_infos); + + size_t + ParseChildMembers (const lldb_private::SymbolContext& sc, + const DWARFDIE &die, + lldb_private::CompilerType &class_clang_type, + const lldb::LanguageType class_language, + std::vector& base_classes, + std::vector& member_accessibilities, + DWARFDIECollection& member_function_dies, + DelayedPropertyList& delayed_properties, + lldb::AccessType &default_accessibility, + bool &is_a_class, + LayoutInfo &layout_info); + + size_t + ParseChildParameters (const lldb_private::SymbolContext& sc, + clang::DeclContext *containing_decl_ctx, + const DWARFDIE &parent_die, + bool skip_artificial, + bool &is_static, + bool &is_variadic, + std::vector& function_args, + std::vector& function_param_decls, + unsigned &type_quals); + + + void + ParseChildArrayInfo (const lldb_private::SymbolContext& sc, + const DWARFDIE &parent_die, + int64_t& first_index, + std::vector& element_orders, + uint32_t& byte_stride, + uint32_t& bit_stride); + + + size_t + ParseChildEnumerators (const lldb_private::SymbolContext& sc, + lldb_private::CompilerType &clang_type, + bool is_signed, + uint32_t enumerator_byte_size, + const DWARFDIE &parent_die); + + clang::DeclContext * + GetClangDeclContextForDIE (const DWARFDIE &die); + + clang::DeclContext * + GetClangDeclContextContainingDIE (const DWARFDIE &die, + DWARFDIE *decl_ctx_die); + + bool + CopyUniqueClassMethodTypes (const DWARFDIE &src_class_die, + const DWARFDIE &dst_class_die, + lldb_private::Type *class_type, + DWARFDIECollection &failures); + + clang::DeclContext * + GetCachedClangDeclContextForDIE (const DWARFDIE &die); + + void + LinkDeclContextToDIE (clang::DeclContext *decl_ctx, + const DWARFDIE &die); + + typedef llvm::SmallPtrSet DIEPointerSet; + typedef llvm::DenseMap DIEToDeclContextMap; + typedef llvm::DenseMap DeclContextToDIEMap; + + lldb_private::ClangASTContext &m_ast; + DIEToDeclContextMap m_die_to_decl_ctx; + DeclContextToDIEMap m_decl_ctx_to_die; + RecordDeclToLayoutMap m_record_decl_to_layout_map; +}; + +#endif // SymbolFileDWARF_DWARFASTParserClang_h_ diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp index d2c898130f15..784d520e0559 100644 --- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp +++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp @@ -323,6 +323,16 @@ DWARFDIE::GetTypeSystem () const return nullptr; } +DWARFASTParser * +DWARFDIE::GetDWARFParser () const +{ + lldb_private::TypeSystem *type_system = GetTypeSystem (); + if (type_system) + return type_system->GetDWARFParser(); + else + return nullptr; +} + bool DWARFDIE::IsStructOrClass () const { diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h index c6e2f5b54fad..e6d83547a0e9 100644 --- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h +++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h @@ -13,6 +13,7 @@ #include "lldb/lldb-types.h" #include "lldb/Core/dwarf.h" +class DWARFASTParser; class DWARFAttributes; class DWARFCompileUnit; class DWARFDebugInfoEntry; @@ -97,6 +98,9 @@ public: lldb_private::TypeSystem * GetTypeSystem () const; + DWARFASTParser * + GetDWARFParser () const; + void Set (DWARFCompileUnit *cu, DWARFDebugInfoEntry *die) { diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp index 38dc94f65c7c..aabb09daf3b3 100644 --- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp +++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp @@ -57,6 +57,7 @@ #include "lldb/Target/ObjCLanguageRuntime.h" #include "lldb/Target/CPPLanguageRuntime.h" +#include "DWARFASTParser.h" #include "DWARFCompileUnit.h" #include "DWARFDebugAbbrev.h" #include "DWARFDebugAranges.h" @@ -1014,7 +1015,9 @@ SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, const DWARFD if (type_system) { - return type_system->ParseFunctionFromDWARF(sc, die); + DWARFASTParser *dwarf_ast = type_system->GetDWARFParser(); + if (dwarf_ast) + return dwarf_ast->ParseFunctionFromDWARF(sc, die); } } return nullptr; @@ -1381,9 +1384,9 @@ SymbolFileDWARF::GetDeclContextForUID (lldb::user_id_t type_uid) DWARFDIE die = debug_info->GetDIE(type_uid); if (die) { - TypeSystem *type_system = die.GetTypeSystem(); - if (type_system) - return type_system->GetDeclContextForUIDFromDWARF(die); + DWARFASTParser *dwarf_ast = die.GetDWARFParser(); + if (dwarf_ast) + return dwarf_ast->GetDeclContextForUIDFromDWARF(die); } } } @@ -1401,9 +1404,9 @@ SymbolFileDWARF::GetDeclContextContainingUID (lldb::user_id_t type_uid) DWARFDIE die = debug_info->GetDIE(type_uid); if (die) { - TypeSystem *type_system = die.GetTypeSystem(); - if (type_system) - return type_system->GetDeclContextContainingUIDFromDWARF(die); + DWARFASTParser *dwarf_ast = die.GetDWARFParser(); + if (dwarf_ast) + return dwarf_ast->GetDeclContextContainingUIDFromDWARF(die); } } } @@ -1521,10 +1524,9 @@ SymbolFileDWARF::CompleteType (CompilerType &clang_type) DWARFAttributes attributes; - TypeSystem *type_system = dwarf_die.GetTypeSystem(); - - if (type_system) - return type_system->CompleteTypeFromDWARF (dwarf_die, type, clang_type); + DWARFASTParser *dwarf_ast = dwarf_die.GetDWARFParser(); + if (dwarf_ast) + return dwarf_ast->CompleteTypeFromDWARF (dwarf_die, type, clang_type); return false; } @@ -2144,11 +2146,10 @@ SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const CompilerDec if (parent_decl_ctx) { - TypeSystem *type_system = die.GetTypeSystem(); - - if (type_system) + DWARFASTParser *dwarf_ast = die.GetDWARFParser(); + if (dwarf_ast) { - CompilerDeclContext actual_parent_decl_ctx = type_system->GetDeclContextContainingUIDFromDWARF (die); + CompilerDeclContext actual_parent_decl_ctx = dwarf_ast->GetDeclContextContainingUIDFromDWARF (die); if (!actual_parent_decl_ctx || actual_parent_decl_ctx != *parent_decl_ctx) continue; } @@ -2414,11 +2415,10 @@ SymbolFileDWARF::DIEInDeclContext (const CompilerDeclContext *decl_ctx, if (die) { - TypeSystem *type_system = die.GetTypeSystem(); - - if (type_system) + DWARFASTParser *dwarf_ast = die.GetDWARFParser(); + if (dwarf_ast) { - CompilerDeclContext actual_decl_ctx = type_system->GetDeclContextContainingUIDFromDWARF (die); + CompilerDeclContext actual_decl_ctx = dwarf_ast->GetDeclContextContainingUIDFromDWARF (die); if (actual_decl_ctx) return actual_decl_ctx == *decl_ctx; } @@ -2967,11 +2967,10 @@ SymbolFileDWARF::FindNamespace (const SymbolContext& sc, if (!DIEInDeclContext (parent_decl_ctx, die)) continue; // The containing decl contexts don't match - TypeSystem *type_system = die.GetTypeSystem(); - - if (type_system) + DWARFASTParser *dwarf_ast = die.GetDWARFParser(); + if (dwarf_ast) { - namespace_decl_ctx = type_system->GetDeclContextForUIDFromDWARF (die); + namespace_decl_ctx = dwarf_ast->GetDeclContextForUIDFromDWARF (die); if (namespace_decl_ctx) break; } @@ -3525,13 +3524,17 @@ SymbolFileDWARF::ParseType (const SymbolContext& sc, const DWARFDIE &die, bool * if (type_system) { - Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO); - type_sp = type_system->ParseTypeFromDWARF (sc, die, log, type_is_new_ptr); - if (type_sp) + DWARFASTParser *dwarf_ast = type_system->GetDWARFParser(); + if (dwarf_ast) { - TypeList* type_list = GetTypeList(); - if (type_list) - type_list->Insert(type_sp); + Log *log = LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO); + type_sp = dwarf_ast->ParseTypeFromDWARF (sc, die, log, type_is_new_ptr); + if (type_sp) + { + TypeList* type_list = GetTypeList(); + if (type_list) + type_list->Insert(type_sp); + } } } } diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h index d89d727381ee..8f09d8af1889 100644 --- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h +++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h @@ -21,8 +21,6 @@ #include "clang/AST/CharUnits.h" #include "clang/AST/ExternalASTSource.h" #include "llvm/ADT/DenseMap.h" -#include "llvm/ADT/SmallPtrSet.h" -#include "llvm/ADT/SmallVector.h" #include "lldb/lldb-private.h" #include "lldb/Core/ClangForward.h" @@ -69,7 +67,8 @@ public: friend class SymbolFileDWARFDebugMap; friend class DebugMapModule; friend class DWARFCompileUnit; - friend class lldb_private::ClangASTContext; + friend class DWARFASTParserClang; + //------------------------------------------------------------------ // Static Functions //------------------------------------------------------------------ diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h index fad93f7db7fd..3b5bec2c930b 100644 --- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h +++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h @@ -109,7 +109,7 @@ protected: friend class DWARFCompileUnit; friend class SymbolFileDWARF; friend class DebugMapModule; - friend class lldb_private::ClangASTContext; + friend class DWARFASTParserClang; struct OSOInfo { lldb::ModuleSP module_sp; diff --git a/lldb/source/Symbol/ClangASTContext.cpp b/lldb/source/Symbol/ClangASTContext.cpp index 235c3070b7a2..04d21eb71337 100644 --- a/lldb/source/Symbol/ClangASTContext.cpp +++ b/lldb/source/Symbol/ClangASTContext.cpp @@ -62,7 +62,6 @@ #include "llvm/Support/Signals.h" #include "lldb/Core/ArchSpec.h" -#include "lldb/Core/dwarf.h" #include "lldb/Core/Flags.h" #include "lldb/Core/Log.h" #include "lldb/Core/RegularExpression.h" @@ -73,25 +72,18 @@ #include "lldb/Symbol/ClangASTContext.h" #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" #include "lldb/Symbol/ClangExternalASTSourceCommon.h" +#include "lldb/Symbol/SymbolFile.h" #include "lldb/Symbol/VerifyDecl.h" #include "lldb/Target/ExecutionContext.h" #include "lldb/Target/Process.h" #include "lldb/Target/ObjCLanguageRuntime.h" +#include "Plugins/SymbolFile/DWARF/DWARFASTParserClang.h" + #include #include - -//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN - -#ifdef ENABLE_DEBUG_PRINTF -#include -#define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__) -#else -#define DEBUG_PRINTF(fmt, ...) -#endif - using namespace lldb; using namespace lldb_private; using namespace llvm; @@ -308,11 +300,7 @@ ClangASTContext::ClangASTContext (const char *target_triple) : m_callback_objc_decl (nullptr), m_callback_baton (nullptr), m_pointer_byte_size (0), - m_ast_owned (false), - m_record_decl_to_layout_map (), - m_die_to_decl_ctx (), - m_decl_ctx_to_die (), - m_clang_tu_decl (nullptr) + m_ast_owned (false) { if (target_triple && target_triple[0]) SetTargetTriple (target_triple); @@ -8750,228 +8738,6 @@ ClangASTContext::DumpTypeDescription (void* type, Stream *s) } } -// DWARF parsing functions -#pragma mark DWARF Parsing - -#include "lldb/Core/Module.h" -#include "lldb/Symbol/CompileUnit.h" -#include "lldb/Symbol/Function.h" -#include "lldb/Symbol/ObjectFile.h" -#include "lldb/Symbol/TypeList.h" - -#include "Plugins/SymbolFile/DWARF/DWARFCompileUnit.h" -#include "Plugins/SymbolFile/DWARF/DWARFDebugInfo.h" -#include "Plugins/SymbolFile/DWARF/DWARFDeclContext.h" -#include "Plugins/SymbolFile/DWARF/DWARFDefines.h" -#include "Plugins/SymbolFile/DWARF/DWARFDIE.h" -#include "Plugins/SymbolFile/DWARF/DWARFDIECollection.h" -#include "Plugins/SymbolFile/DWARF/SymbolFileDWARF.h" -#include "Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h" -#include "Plugins/SymbolFile/DWARF/UniqueDWARFASTType.h" - - -class ClangASTContext::DelayedAddObjCClassProperty -{ -public: - DelayedAddObjCClassProperty(const CompilerType &class_opaque_type, - const char *property_name, - const CompilerType &property_opaque_type, // The property type is only required if you don't have an ivar decl - clang::ObjCIvarDecl *ivar_decl, - const char *property_setter_name, - const char *property_getter_name, - uint32_t property_attributes, - const ClangASTMetadata *metadata) : - m_class_opaque_type (class_opaque_type), - m_property_name (property_name), - m_property_opaque_type (property_opaque_type), - m_ivar_decl (ivar_decl), - m_property_setter_name (property_setter_name), - m_property_getter_name (property_getter_name), - m_property_attributes (property_attributes) - { - if (metadata != NULL) - { - m_metadata_ap.reset(new ClangASTMetadata()); - *m_metadata_ap = *metadata; - } - } - - DelayedAddObjCClassProperty (const DelayedAddObjCClassProperty &rhs) - { - *this = rhs; - } - - DelayedAddObjCClassProperty& operator= (const DelayedAddObjCClassProperty &rhs) - { - m_class_opaque_type = rhs.m_class_opaque_type; - m_property_name = rhs.m_property_name; - m_property_opaque_type = rhs.m_property_opaque_type; - m_ivar_decl = rhs.m_ivar_decl; - m_property_setter_name = rhs.m_property_setter_name; - m_property_getter_name = rhs.m_property_getter_name; - m_property_attributes = rhs.m_property_attributes; - - if (rhs.m_metadata_ap.get()) - { - m_metadata_ap.reset (new ClangASTMetadata()); - *m_metadata_ap = *rhs.m_metadata_ap; - } - return *this; - } - - bool - Finalize() - { - ClangASTContext* ast = m_class_opaque_type.GetTypeSystem()->AsClangASTContext(); - assert(ast); - return ast->AddObjCClassProperty (m_class_opaque_type, - m_property_name, - m_property_opaque_type, - m_ivar_decl, - m_property_setter_name, - m_property_getter_name, - m_property_attributes, - m_metadata_ap.get()); - } - -private: - CompilerType m_class_opaque_type; - const char *m_property_name; - CompilerType m_property_opaque_type; - clang::ObjCIvarDecl *m_ivar_decl; - const char *m_property_setter_name; - const char *m_property_getter_name; - uint32_t m_property_attributes; - std::unique_ptr m_metadata_ap; -}; - -bool -ClangASTContext::ParseTemplateDIE (const DWARFDIE &die, - ClangASTContext::TemplateParameterInfos &template_param_infos) -{ - const dw_tag_t tag = die.Tag(); - - switch (tag) - { - case DW_TAG_template_type_parameter: - case DW_TAG_template_value_parameter: - { - DWARFAttributes attributes; - const size_t num_attributes = die.GetAttributes (attributes); - const char *name = NULL; - Type *lldb_type = NULL; - CompilerType clang_type; - uint64_t uval64 = 0; - bool uval64_valid = false; - if (num_attributes > 0) - { - DWARFFormValue form_value; - for (size_t i=0; iGetForwardCompilerType (); - } - break; - - case DW_AT_const_value: - if (attributes.ExtractFormValueAtIndex(i, form_value)) - { - uval64_valid = true; - uval64 = form_value.Unsigned(); - } - break; - default: - break; - } - } - - clang::ASTContext *ast = getASTContext(); - if (!clang_type) - clang_type = GetBasicType(eBasicTypeVoid); - - if (clang_type) - { - bool is_signed = false; - if (name && name[0]) - template_param_infos.names.push_back(name); - else - template_param_infos.names.push_back(NULL); - - if (tag == DW_TAG_template_value_parameter && - lldb_type != NULL && - clang_type.IsIntegerType (is_signed) && - uval64_valid) - { - llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); - template_param_infos.args.push_back (clang::TemplateArgument (*ast, - llvm::APSInt(apint), - ClangASTContext::GetQualType(clang_type))); - } - else - { - template_param_infos.args.push_back (clang::TemplateArgument (ClangASTContext::GetQualType(clang_type))); - } - } - else - { - return false; - } - - } - } - return true; - - default: - break; - } - return false; -} - -bool -ClangASTContext::ParseTemplateParameterInfos (const DWARFDIE &parent_die, - ClangASTContext::TemplateParameterInfos &template_param_infos) -{ - - if (!parent_die) - return false; - - Args template_parameter_names; - for (DWARFDIE die = parent_die.GetFirstChild(); - die.IsValid(); - die = die.GetSibling()) - { - const dw_tag_t tag = die.Tag(); - - switch (tag) - { - case DW_TAG_template_type_parameter: - case DW_TAG_template_value_parameter: - ParseTemplateDIE (die, template_param_infos); - break; - - default: - break; - } - } - if (template_param_infos.args.empty()) - return false; - return template_param_infos.args.size() == template_param_infos.names.size(); -} - clang::ClassTemplateDecl * ClangASTContext::ParseClassTemplateDecl (clang::DeclContext *decl_ctx, lldb::AccessType access_type, @@ -8993,321 +8759,6 @@ ClangASTContext::ParseClassTemplateDecl (clang::DeclContext *decl_ctx, return NULL; } -bool -ClangASTContext::CompleteTypeFromDWARF (const DWARFDIE &die, - lldb_private::Type *type, - CompilerType &clang_type) -{ - // Disable external storage for this type so we don't get anymore - // clang::ExternalASTSource queries for this type. - SetHasExternalStorage (clang_type.GetOpaqueQualType(), false); - - if (!die) - return false; - - const dw_tag_t tag = die.Tag(); - - SymbolFileDWARF *dwarf = die.GetDWARF(); - - Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION)); - if (log) - dwarf->GetObjectFile()->GetModule()->LogMessageVerboseBacktrace (log, - "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...", - die.GetID(), - die.GetTagAsCString(), - type->GetName().AsCString()); - assert (clang_type); - DWARFAttributes attributes; - - switch (tag) - { - case DW_TAG_structure_type: - case DW_TAG_union_type: - case DW_TAG_class_type: - { - LayoutInfo layout_info; - - { - if (die.HasChildren()) - { - LanguageType class_language = eLanguageTypeUnknown; - if (ClangASTContext::IsObjCObjectOrInterfaceType(clang_type)) - { - class_language = eLanguageTypeObjC; - // For objective C we don't start the definition when - // the class is created. - ClangASTContext::StartTagDeclarationDefinition (clang_type); - } - - int tag_decl_kind = -1; - AccessType default_accessibility = eAccessNone; - if (tag == DW_TAG_structure_type) - { - tag_decl_kind = clang::TTK_Struct; - default_accessibility = eAccessPublic; - } - else if (tag == DW_TAG_union_type) - { - tag_decl_kind = clang::TTK_Union; - default_accessibility = eAccessPublic; - } - else if (tag == DW_TAG_class_type) - { - tag_decl_kind = clang::TTK_Class; - default_accessibility = eAccessPrivate; - } - - SymbolContext sc(die.GetLLDBCompileUnit()); - std::vector base_classes; - std::vector member_accessibilities; - bool is_a_class = false; - // Parse members and base classes first - DWARFDIECollection member_function_dies; - - DelayedPropertyList delayed_properties; - ParseChildMembers (sc, - die, - clang_type, - class_language, - base_classes, - member_accessibilities, - member_function_dies, - delayed_properties, - default_accessibility, - is_a_class, - layout_info); - - // Now parse any methods if there were any... - size_t num_functions = member_function_dies.Size(); - if (num_functions > 0) - { - for (size_t i=0; iResolveType(member_function_dies.GetDIEAtIndex(i)); - } - } - - if (class_language == eLanguageTypeObjC) - { - ConstString class_name (clang_type.GetTypeName()); - if (class_name) - { - DIEArray method_die_offsets; - dwarf->GetObjCMethodDIEOffsets(class_name, method_die_offsets); - - if (!method_die_offsets.empty()) - { - DWARFDebugInfo* debug_info = dwarf->DebugInfo(); - - const size_t num_matches = method_die_offsets.size(); - for (size_t i=0; iGetDIE (die_offset); - - if (method_die) - method_die.ResolveType (); - } - } - - for (DelayedPropertyList::iterator pi = delayed_properties.begin(), pe = delayed_properties.end(); - pi != pe; - ++pi) - pi->Finalize(); - } - } - - // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we - // need to tell the clang type it is actually a class. - if (class_language != eLanguageTypeObjC) - { - if (is_a_class && tag_decl_kind != clang::TTK_Class) - SetTagTypeKind (ClangASTContext::GetQualType(clang_type), clang::TTK_Class); - } - - // Since DW_TAG_structure_type gets used for both classes - // and structures, we may need to set any DW_TAG_member - // fields to have a "private" access if none was specified. - // When we parsed the child members we tracked that actual - // accessibility value for each DW_TAG_member in the - // "member_accessibilities" array. If the value for the - // member is zero, then it was set to the "default_accessibility" - // which for structs was "public". Below we correct this - // by setting any fields to "private" that weren't correctly - // set. - if (is_a_class && !member_accessibilities.empty()) - { - // This is a class and all members that didn't have - // their access specified are private. - SetDefaultAccessForRecordFields (GetAsRecordDecl(clang_type), - eAccessPrivate, - &member_accessibilities.front(), - member_accessibilities.size()); - } - - if (!base_classes.empty()) - { - // Make sure all base classes refer to complete types and not - // forward declarations. If we don't do this, clang will crash - // with an assertion in the call to clang_type.SetBaseClassesForClassType() - bool base_class_error = false; - for (auto &base_class : base_classes) - { - clang::TypeSourceInfo *type_source_info = base_class->getTypeSourceInfo(); - if (type_source_info) - { - CompilerType base_class_type (this, type_source_info->getType().getAsOpaquePtr()); - if (base_class_type.GetCompleteType() == false) - { - if (!base_class_error) - { - dwarf->GetObjectFile()->GetModule()->ReportError ("DWARF DIE at 0x%8.8x for class '%s' has a base class '%s' that is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s", - die.GetOffset(), - die.GetName(), - base_class_type.GetTypeName().GetCString(), - sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file"); - } - // We have no choice other than to pretend that the base class - // is complete. If we don't do this, clang will crash when we - // call setBases() inside of "clang_type.SetBaseClassesForClassType()" - // below. Since we provide layout assistance, all ivars in this - // class and other classes will be fine, this is the best we can do - // short of crashing. - - ClangASTContext::StartTagDeclarationDefinition (base_class_type); - ClangASTContext::CompleteTagDeclarationDefinition (base_class_type); - } - } - } - SetBaseClassesForClassType (clang_type.GetOpaqueQualType(), - &base_classes.front(), - base_classes.size()); - - // Clang will copy each CXXBaseSpecifier in "base_classes" - // so we have to free them all. - ClangASTContext::DeleteBaseClassSpecifiers (&base_classes.front(), - base_classes.size()); - } - } - } - - ClangASTContext::BuildIndirectFields (clang_type); - ClangASTContext::CompleteTagDeclarationDefinition (clang_type); - - if (!layout_info.field_offsets.empty() || - !layout_info.base_offsets.empty() || - !layout_info.vbase_offsets.empty() ) - { - if (type) - layout_info.bit_size = type->GetByteSize() * 8; - if (layout_info.bit_size == 0) - layout_info.bit_size = die.GetAttributeValueAsUnsigned(DW_AT_byte_size, 0) * 8; - - clang::CXXRecordDecl *record_decl = GetAsCXXRecordDecl(clang_type.GetOpaqueQualType()); - if (record_decl) - { - if (log) - { - ModuleSP module_sp = dwarf->GetObjectFile()->GetModule(); - - if (module_sp) - { - module_sp->LogMessage (log, - "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) caching layout info for record_decl = %p, bit_size = %" PRIu64 ", alignment = %" PRIu64 ", field_offsets[%u], base_offsets[%u], vbase_offsets[%u])", - static_cast(clang_type.GetOpaqueQualType()), - static_cast(record_decl), - layout_info.bit_size, - layout_info.alignment, - static_cast(layout_info.field_offsets.size()), - static_cast(layout_info.base_offsets.size()), - static_cast(layout_info.vbase_offsets.size())); - - uint32_t idx; - { - llvm::DenseMap::const_iterator pos, - end = layout_info.field_offsets.end(); - for (idx = 0, pos = layout_info.field_offsets.begin(); pos != end; ++pos, ++idx) - { - module_sp->LogMessage(log, - "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) field[%u] = { bit_offset=%u, name='%s' }", - static_cast(clang_type.GetOpaqueQualType()), - idx, - static_cast(pos->second), - pos->first->getNameAsString().c_str()); - } - } - - { - llvm::DenseMap::const_iterator base_pos, - base_end = layout_info.base_offsets.end(); - for (idx = 0, base_pos = layout_info.base_offsets.begin(); base_pos != base_end; ++base_pos, ++idx) - { - module_sp->LogMessage(log, - "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) base[%u] = { byte_offset=%u, name='%s' }", - clang_type.GetOpaqueQualType(), idx, (uint32_t)base_pos->second.getQuantity(), - base_pos->first->getNameAsString().c_str()); - } - } - { - llvm::DenseMap::const_iterator vbase_pos, - vbase_end = layout_info.vbase_offsets.end(); - for (idx = 0, vbase_pos = layout_info.vbase_offsets.begin(); vbase_pos != vbase_end; ++vbase_pos, ++idx) - { - module_sp->LogMessage(log, - "ClangASTContext::CompleteTypeFromDWARF (clang_type = %p) vbase[%u] = { byte_offset=%u, name='%s' }", - static_cast(clang_type.GetOpaqueQualType()), idx, - static_cast(vbase_pos->second.getQuantity()), - vbase_pos->first->getNameAsString().c_str()); - } - } - - } - } - m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); - } - } - } - - return (bool)clang_type; - - case DW_TAG_enumeration_type: - ClangASTContext::StartTagDeclarationDefinition (clang_type); - if (die.HasChildren()) - { - SymbolContext sc(die.GetLLDBCompileUnit()); - bool is_signed = false; - clang_type.IsIntegerType(is_signed); - ParseChildEnumerators(sc, clang_type, is_signed, type->GetByteSize(), die); - } - ClangASTContext::CompleteTagDeclarationDefinition (clang_type); - return (bool)clang_type; - - default: - assert(false && "not a forward clang type decl!"); - break; - } - - return false; -} - -CompilerDeclContext -ClangASTContext::GetDeclContextForUIDFromDWARF (const DWARFDIE &die) -{ - clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE (die); - if (clang_decl_ctx) - return CompilerDeclContext(this, clang_decl_ctx); - return CompilerDeclContext(); -} - -CompilerDeclContext -ClangASTContext::GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) -{ - clang::DeclContext *clang_decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); - if (clang_decl_ctx) - return CompilerDeclContext(this, clang_decl_ctx); - return CompilerDeclContext(); -} - void ClangASTContext::CompleteTagDecl (void *baton, clang::TagDecl *decl) { @@ -9334,6 +8785,16 @@ ClangASTContext::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDec } } + +DWARFASTParser * +ClangASTContext::GetDWARFParser () +{ + if (!m_dwarf_ast_parser_ap) + m_dwarf_ast_parser_ap.reset(new DWARFASTParserClang(*this)); + return m_dwarf_ast_parser_ap.get(); +} + + bool ClangASTContext::LayoutRecordType(void *baton, const clang::RecordDecl *record_decl, @@ -9344,1198 +8805,8 @@ ClangASTContext::LayoutRecordType(void *baton, llvm::DenseMap &vbase_offsets) { ClangASTContext *ast = (ClangASTContext *)baton; - RecordDeclToLayoutMap::iterator pos = ast->m_record_decl_to_layout_map.find (record_decl); - bool success = false; - base_offsets.clear(); - vbase_offsets.clear(); - if (pos != ast->m_record_decl_to_layout_map.end()) - { - bit_size = pos->second.bit_size; - alignment = pos->second.alignment; - field_offsets.swap(pos->second.field_offsets); - base_offsets.swap (pos->second.base_offsets); - vbase_offsets.swap (pos->second.vbase_offsets); - ast->m_record_decl_to_layout_map.erase(pos); - success = true; - } - else - { - bit_size = 0; - alignment = 0; - field_offsets.clear(); - } - return success; -} - - -size_t -ClangASTContext::ParseChildEnumerators (const SymbolContext& sc, - lldb_private::CompilerType &clang_type, - bool is_signed, - uint32_t enumerator_byte_size, - const DWARFDIE &parent_die) -{ - if (!parent_die) - return 0; - - size_t enumerators_added = 0; - - for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) - { - const dw_tag_t tag = die.Tag(); - if (tag == DW_TAG_enumerator) - { - DWARFAttributes attributes; - const size_t num_child_attributes = die.GetAttributes(attributes); - if (num_child_attributes > 0) - { - const char *name = NULL; - bool got_value = false; - int64_t enum_value = 0; - Declaration decl; - - uint32_t i; - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_sibling: - break; - } - } - } - - if (name && name[0] && got_value) - { - AddEnumerationValueToEnumerationType (clang_type.GetOpaqueQualType(), - GetEnumerationIntegerType(clang_type.GetOpaqueQualType()), - decl, - name, - enum_value, - enumerator_byte_size * 8); - ++enumerators_added; - } - } - } - } - return enumerators_added; -} - -#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) - -class DIEStack -{ -public: - - void Push (const DWARFDIE &die) - { - m_dies.push_back (die); - } - - - void LogDIEs (Log *log) - { - StreamString log_strm; - const size_t n = m_dies.size(); - log_strm.Printf("DIEStack[%" PRIu64 "]:\n", (uint64_t)n); - for (size_t i=0; iPutCString(log_strm.GetData()); - } - void Pop () - { - m_dies.pop_back(); - } - - class ScopedPopper - { - public: - ScopedPopper (DIEStack &die_stack) : - m_die_stack (die_stack), - m_valid (false) - { - } - - void - Push (const DWARFDIE &die) - { - m_valid = true; - m_die_stack.Push (die); - } - - ~ScopedPopper () - { - if (m_valid) - m_die_stack.Pop(); - } - - - - protected: - DIEStack &m_die_stack; - bool m_valid; - }; - -protected: - typedef std::vector Stack; - Stack m_dies; -}; -#endif - - - -static AccessType -DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) -{ - switch (dwarf_accessibility) - { - case DW_ACCESS_public: return eAccessPublic; - case DW_ACCESS_private: return eAccessPrivate; - case DW_ACCESS_protected: return eAccessProtected; - default: break; - } - return eAccessNone; -} - -static bool -DeclKindIsCXXClass (clang::Decl::Kind decl_kind) -{ - switch (decl_kind) - { - case clang::Decl::CXXRecord: - case clang::Decl::ClassTemplateSpecialization: - return true; - default: - break; - } - return false; -} - -struct BitfieldInfo -{ - uint64_t bit_size; - uint64_t bit_offset; - - BitfieldInfo () : - bit_size (LLDB_INVALID_ADDRESS), - bit_offset (LLDB_INVALID_ADDRESS) - { - } - - void - Clear() - { - bit_size = LLDB_INVALID_ADDRESS; - bit_offset = LLDB_INVALID_ADDRESS; - } - - bool IsValid () - { - return (bit_size != LLDB_INVALID_ADDRESS) && - (bit_offset != LLDB_INVALID_ADDRESS); - } -}; - -Function * -ClangASTContext::ParseFunctionFromDWARF (const SymbolContext& sc, - const DWARFDIE &die) -{ - DWARFRangeList func_ranges; - const char *name = NULL; - const char *mangled = NULL; - int decl_file = 0; - int decl_line = 0; - int decl_column = 0; - int call_file = 0; - int call_line = 0; - int call_column = 0; - DWARFExpression frame_base(die.GetCU()); - - const dw_tag_t tag = die.Tag(); - - if (tag != DW_TAG_subprogram) - return NULL; - - if (die.GetDIENamesAndRanges (name, - mangled, - func_ranges, - decl_file, - decl_line, - decl_column, - call_file, - call_line, - call_column, - &frame_base)) - { - - // Union of all ranges in the function DIE (if the function is discontiguous) - AddressRange func_range; - lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); - lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); - if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr) - { - ModuleSP module_sp (die.GetModule()); - func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, module_sp->GetSectionList()); - if (func_range.GetBaseAddress().IsValid()) - func_range.SetByteSize(highest_func_addr - lowest_func_addr); - } - - if (func_range.GetBaseAddress().IsValid()) - { - Mangled func_name; - if (mangled) - func_name.SetValue(ConstString(mangled), true); - else if (die.GetParent().Tag() == DW_TAG_compile_unit && - LanguageRuntime::LanguageIsCPlusPlus(die.GetLanguage()) && - name && strcmp(name, "main") != 0) - { - // If the mangled name is not present in the DWARF, generate the demangled name - // using the decl context. We skip if the function is "main" as its name is - // never mangled. - bool is_static = false; - bool is_variadic = false; - unsigned type_quals = 0; - std::vector param_types; - std::vector param_decls; - DWARFDeclContext decl_ctx; - StreamString sstr; - - die.GetDWARFDeclContext(decl_ctx); - sstr << decl_ctx.GetQualifiedName(); - - clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE(die, nullptr); - ParseChildParameters(sc, - containing_decl_ctx, - die, - true, - is_static, - is_variadic, - param_types, - param_decls, - type_quals); - sstr << "("; - for (size_t i = 0; i < param_types.size(); i++) - { - if (i > 0) - sstr << ", "; - sstr << param_types[i].GetTypeName(); - } - if (is_variadic) - sstr << ", ..."; - sstr << ")"; - if (type_quals & clang::Qualifiers::Const) - sstr << " const"; - - func_name.SetValue(ConstString(sstr.GetData()), false); - } - else - func_name.SetValue(ConstString(name), false); - - FunctionSP func_sp; - std::unique_ptr decl_ap; - if (decl_file != 0 || decl_line != 0 || decl_column != 0) - decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), - decl_line, - decl_column)); - - SymbolFileDWARF *dwarf = die.GetDWARF(); - // Supply the type _only_ if it has already been parsed - Type *func_type = dwarf->m_die_to_type.lookup (die.GetDIE()); - - assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); - - if (dwarf->FixupAddress (func_range.GetBaseAddress())) - { - const user_id_t func_user_id = die.GetID(); - func_sp.reset(new Function (sc.comp_unit, - func_user_id, // UserID is the DIE offset - func_user_id, - func_name, - func_type, - func_range)); // first address range - - if (func_sp.get() != NULL) - { - if (frame_base.IsValid()) - func_sp->GetFrameBaseExpression() = frame_base; - sc.comp_unit->AddFunction(func_sp); - return func_sp.get(); - } - } - } - } - return NULL; -} - - -size_t -ClangASTContext::ParseChildMembers (const SymbolContext& sc, - const DWARFDIE &parent_die, - CompilerType &class_clang_type, - const LanguageType class_language, - std::vector& base_classes, - std::vector& member_accessibilities, - DWARFDIECollection& member_function_dies, - DelayedPropertyList& delayed_properties, - AccessType& default_accessibility, - bool &is_a_class, - LayoutInfo &layout_info) -{ - if (!parent_die) - return 0; - - size_t count = 0; - uint32_t member_idx = 0; - BitfieldInfo last_field_info; - - ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule(); - ClangASTContext* ast = class_clang_type.GetTypeSystem()->AsClangASTContext(); - if (ast == nullptr) - return 0; - - for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) - { - dw_tag_t tag = die.Tag(); - - switch (tag) - { - case DW_TAG_member: - case DW_TAG_APPLE_property: - { - DWARFAttributes attributes; - const size_t num_attributes = die.GetAttributes (attributes); - if (num_attributes > 0) - { - Declaration decl; - //DWARFExpression location; - const char *name = NULL; - const char *prop_name = NULL; - const char *prop_getter_name = NULL; - const char *prop_setter_name = NULL; - uint32_t prop_attributes = 0; - - - bool is_artificial = false; - lldb::user_id_t encoding_uid = LLDB_INVALID_UID; - AccessType accessibility = eAccessNone; - uint32_t member_byte_offset = UINT32_MAX; - size_t byte_size = 0; - size_t bit_offset = 0; - size_t bit_size = 0; - bool is_external = false; // On DW_TAG_members, this means the member is static - uint32_t i; - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_name: name = form_value.AsCString(); break; - case DW_AT_type: encoding_uid = form_value.Reference(); break; - case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; - case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; - case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; - case DW_AT_data_member_location: - if (form_value.BlockData()) - { - Value initialValue(0); - Value memberOffset(0); - const DWARFDataExtractor& debug_info_data = die.GetDWARF()->get_debug_info_data(); - uint32_t block_length = form_value.Unsigned(); - uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); - if (DWARFExpression::Evaluate(NULL, // ExecutionContext * - NULL, // ClangExpressionVariableList * - NULL, // ClangExpressionDeclMap * - NULL, // RegisterContext * - module_sp, - debug_info_data, - die.GetCU(), - block_offset, - block_length, - eRegisterKindDWARF, - &initialValue, - memberOffset, - NULL)) - { - member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); - } - } - else - { - // With DWARF 3 and later, if the value is an integer constant, - // this form value is the offset in bytes from the beginning - // of the containing entity. - member_byte_offset = form_value.Unsigned(); - } - break; - - case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; - case DW_AT_artificial: is_artificial = form_value.Boolean(); break; - case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(); - break; - case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(); - break; - case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(); - break; - case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; - case DW_AT_external: is_external = form_value.Boolean(); break; - - default: - case DW_AT_declaration: - case DW_AT_description: - case DW_AT_mutable: - case DW_AT_visibility: - case DW_AT_sibling: - break; - } - } - } - - if (prop_name) - { - ConstString fixed_getter; - ConstString fixed_setter; - - // Check if the property getter/setter were provided as full - // names. We want basenames, so we extract them. - - if (prop_getter_name && prop_getter_name[0] == '-') - { - ObjCLanguageRuntime::MethodName prop_getter_method(prop_getter_name, true); - prop_getter_name = prop_getter_method.GetSelector().GetCString(); - } - - if (prop_setter_name && prop_setter_name[0] == '-') - { - ObjCLanguageRuntime::MethodName prop_setter_method(prop_setter_name, true); - prop_setter_name = prop_setter_method.GetSelector().GetCString(); - } - - // If the names haven't been provided, they need to be - // filled in. - - if (!prop_getter_name) - { - prop_getter_name = prop_name; - } - if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly)) - { - StreamString ss; - - ss.Printf("set%c%s:", - toupper(prop_name[0]), - &prop_name[1]); - - fixed_setter.SetCString(ss.GetData()); - prop_setter_name = fixed_setter.GetCString(); - } - } - - // Clang has a DWARF generation bug where sometimes it - // represents fields that are references with bad byte size - // and bit size/offset information such as: - // - // DW_AT_byte_size( 0x00 ) - // DW_AT_bit_size( 0x40 ) - // DW_AT_bit_offset( 0xffffffffffffffc0 ) - // - // So check the bit offset to make sure it is sane, and if - // the values are not sane, remove them. If we don't do this - // then we will end up with a crash if we try to use this - // type in an expression when clang becomes unhappy with its - // recycled debug info. - - if (bit_offset > 128) - { - bit_size = 0; - bit_offset = 0; - } - - // FIXME: Make Clang ignore Objective-C accessibility for expressions - if (class_language == eLanguageTypeObjC || - class_language == eLanguageTypeObjC_plus_plus) - accessibility = eAccessNone; - - if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) - { - // Not all compilers will mark the vtable pointer - // member as artificial (llvm-gcc). We can't have - // the virtual members in our classes otherwise it - // throws off all child offsets since we end up - // having and extra pointer sized member in our - // class layouts. - is_artificial = true; - } - - // Handle static members - if (is_external && member_byte_offset == UINT32_MAX) - { - Type *var_type = die.ResolveTypeUID(encoding_uid); - - if (var_type) - { - if (accessibility == eAccessNone) - accessibility = eAccessPublic; - ClangASTContext::AddVariableToRecordType (class_clang_type, - name, - var_type->GetLayoutCompilerType (), - accessibility); - } - break; - } - - if (is_artificial == false) - { - Type *member_type = die.ResolveTypeUID(encoding_uid); - - clang::FieldDecl *field_decl = NULL; - if (tag == DW_TAG_member) - { - if (member_type) - { - if (accessibility == eAccessNone) - accessibility = default_accessibility; - member_accessibilities.push_back(accessibility); - - uint64_t field_bit_offset = (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8)); - if (bit_size > 0) - { - - BitfieldInfo this_field_info; - this_field_info.bit_offset = field_bit_offset; - this_field_info.bit_size = bit_size; - - ///////////////////////////////////////////////////////////// - // How to locate a field given the DWARF debug information - // - // AT_byte_size indicates the size of the word in which the - // bit offset must be interpreted. - // - // AT_data_member_location indicates the byte offset of the - // word from the base address of the structure. - // - // AT_bit_offset indicates how many bits into the word - // (according to the host endianness) the low-order bit of - // the field starts. AT_bit_offset can be negative. - // - // AT_bit_size indicates the size of the field in bits. - ///////////////////////////////////////////////////////////// - - if (byte_size == 0) - byte_size = member_type->GetByteSize(); - - if (die.GetDWARF()->GetObjectFile()->GetByteOrder() == eByteOrderLittle) - { - this_field_info.bit_offset += byte_size * 8; - this_field_info.bit_offset -= (bit_offset + bit_size); - } - else - { - this_field_info.bit_offset += bit_offset; - } - - // Update the field bit offset we will report for layout - field_bit_offset = this_field_info.bit_offset; - - // If the member to be emitted did not start on a character boundary and there is - // empty space between the last field and this one, then we need to emit an - // anonymous member filling up the space up to its start. There are three cases - // here: - // - // 1 If the previous member ended on a character boundary, then we can emit an - // anonymous member starting at the most recent character boundary. - // - // 2 If the previous member did not end on a character boundary and the distance - // from the end of the previous member to the current member is less than a - // word width, then we can emit an anonymous member starting right after the - // previous member and right before this member. - // - // 3 If the previous member did not end on a character boundary and the distance - // from the end of the previous member to the current member is greater than - // or equal a word width, then we act as in Case 1. - - const uint64_t character_width = 8; - const uint64_t word_width = 32; - - // Objective-C has invalid DW_AT_bit_offset values in older versions - // of clang, so we have to be careful and only insert unnamed bitfields - // if we have a new enough clang. - bool detect_unnamed_bitfields = true; - - if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus) - detect_unnamed_bitfields = die.GetCU()->Supports_unnamed_objc_bitfields (); - - if (detect_unnamed_bitfields) - { - BitfieldInfo anon_field_info; - - if ((this_field_info.bit_offset % character_width) != 0) // not char aligned - { - uint64_t last_field_end = 0; - - if (last_field_info.IsValid()) - last_field_end = last_field_info.bit_offset + last_field_info.bit_size; - - if (this_field_info.bit_offset != last_field_end) - { - if (((last_field_end % character_width) == 0) || // case 1 - (this_field_info.bit_offset - last_field_end >= word_width)) // case 3 - { - anon_field_info.bit_size = this_field_info.bit_offset % character_width; - anon_field_info.bit_offset = this_field_info.bit_offset - anon_field_info.bit_size; - } - else // case 2 - { - anon_field_info.bit_size = this_field_info.bit_offset - last_field_end; - anon_field_info.bit_offset = last_field_end; - } - } - } - - if (anon_field_info.IsValid()) - { - clang::FieldDecl *unnamed_bitfield_decl = - ClangASTContext::AddFieldToRecordType (class_clang_type, - NULL, - GetBuiltinTypeForEncodingAndBitSize(eEncodingSint, word_width), - accessibility, - anon_field_info.bit_size); - - layout_info.field_offsets.insert( - std::make_pair(unnamed_bitfield_decl, anon_field_info.bit_offset)); - } - } - last_field_info = this_field_info; - } - else - { - last_field_info.Clear(); - } - - CompilerType member_clang_type = member_type->GetLayoutCompilerType (); - - { - // Older versions of clang emit array[0] and array[1] in the same way (). - // If the current field is at the end of the structure, then there is definitely no room for extra - // elements and we override the type to array[0]. - - CompilerType member_array_element_type; - uint64_t member_array_size; - bool member_array_is_incomplete; - - if (member_clang_type.IsArrayType(&member_array_element_type, - &member_array_size, - &member_array_is_incomplete) && - !member_array_is_incomplete) - { - uint64_t parent_byte_size = parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX); - - if (member_byte_offset >= parent_byte_size) - { - if (member_array_size != 1) - { - module_sp->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which extends beyond the bounds of 0x%8.8" PRIx64, - die.GetID(), - name, - encoding_uid, - parent_die.GetID()); - } - - member_clang_type = CreateArrayType(member_array_element_type, 0, false); - } - } - } - - field_decl = ClangASTContext::AddFieldToRecordType (class_clang_type, - name, - member_clang_type, - accessibility, - bit_size); - - SetMetadataAsUserID (field_decl, die.GetID()); - - layout_info.field_offsets.insert(std::make_pair(field_decl, field_bit_offset)); - } - else - { - if (name) - module_sp->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8" PRIx64 " which was unable to be parsed", - die.GetID(), - name, - encoding_uid); - else - module_sp->ReportError ("0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8" PRIx64 " which was unable to be parsed", - die.GetID(), - encoding_uid); - } - } - - if (prop_name != NULL && member_type) - { - clang::ObjCIvarDecl *ivar_decl = NULL; - - if (field_decl) - { - ivar_decl = clang::dyn_cast(field_decl); - assert (ivar_decl != NULL); - } - - ClangASTMetadata metadata; - metadata.SetUserID (die.GetID()); - delayed_properties.push_back(DelayedAddObjCClassProperty(class_clang_type, - prop_name, - member_type->GetLayoutCompilerType (), - ivar_decl, - prop_setter_name, - prop_getter_name, - prop_attributes, - &metadata)); - - if (ivar_decl) - SetMetadataAsUserID (ivar_decl, die.GetID()); - } - } - } - ++member_idx; - } - break; - - case DW_TAG_subprogram: - // Let the type parsing code handle this one for us. - member_function_dies.Append (die); - break; - - case DW_TAG_inheritance: - { - is_a_class = true; - if (default_accessibility == eAccessNone) - default_accessibility = eAccessPrivate; - // TODO: implement DW_TAG_inheritance type parsing - DWARFAttributes attributes; - const size_t num_attributes = die.GetAttributes (attributes); - if (num_attributes > 0) - { - Declaration decl; - DWARFExpression location(die.GetCU()); - lldb::user_id_t encoding_uid = LLDB_INVALID_UID; - AccessType accessibility = default_accessibility; - bool is_virtual = false; - bool is_base_of_class = true; - off_t member_byte_offset = 0; - uint32_t i; - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_type: encoding_uid = form_value.Reference(); break; - case DW_AT_data_member_location: - if (form_value.BlockData()) - { - Value initialValue(0); - Value memberOffset(0); - const DWARFDataExtractor& debug_info_data = die.GetDWARF()->get_debug_info_data(); - uint32_t block_length = form_value.Unsigned(); - uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); - if (DWARFExpression::Evaluate (NULL, - NULL, - NULL, - NULL, - module_sp, - debug_info_data, - die.GetCU(), - block_offset, - block_length, - eRegisterKindDWARF, - &initialValue, - memberOffset, - NULL)) - { - member_byte_offset = memberOffset.ResolveValue(NULL).UInt(); - } - } - else - { - // With DWARF 3 and later, if the value is an integer constant, - // this form value is the offset in bytes from the beginning - // of the containing entity. - member_byte_offset = form_value.Unsigned(); - } - break; - - case DW_AT_accessibility: - accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); - break; - - case DW_AT_virtuality: - is_virtual = form_value.Boolean(); - break; - - case DW_AT_sibling: - break; - - default: - break; - } - } - } - - Type *base_class_type = die.ResolveTypeUID(encoding_uid); - if (base_class_type == NULL) - { - module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to resolve the base class at 0x%8.8" PRIx64 " from enclosing type 0x%8.8x. \nPlease file a bug and attach the file at the start of this error message", - die.GetOffset(), - encoding_uid, - parent_die.GetOffset()); - break; - } - - CompilerType base_class_clang_type = base_class_type->GetFullCompilerType (); - assert (base_class_clang_type); - if (class_language == eLanguageTypeObjC) - { - ast->SetObjCSuperClass(class_clang_type, base_class_clang_type); - } - else - { - base_classes.push_back (ast->CreateBaseClassSpecifier (base_class_clang_type.GetOpaqueQualType(), - accessibility, - is_virtual, - is_base_of_class)); - - if (is_virtual) - { - // Do not specify any offset for virtual inheritance. The DWARF produced by clang doesn't - // give us a constant offset, but gives us a DWARF expressions that requires an actual object - // in memory. the DW_AT_data_member_location for a virtual base class looks like: - // DW_AT_data_member_location( DW_OP_dup, DW_OP_deref, DW_OP_constu(0x00000018), DW_OP_minus, DW_OP_deref, DW_OP_plus ) - // Given this, there is really no valid response we can give to clang for virtual base - // class offsets, and this should eventually be removed from LayoutRecordType() in the external - // AST source in clang. - } - else - { - layout_info.base_offsets.insert( - std::make_pair(ast->GetAsCXXRecordDecl(base_class_clang_type.GetOpaqueQualType()), - clang::CharUnits::fromQuantity(member_byte_offset))); - } - } - } - } - break; - - default: - break; - } - } - - return count; -} - - -size_t -ClangASTContext::ParseChildParameters (const SymbolContext& sc, - clang::DeclContext *containing_decl_ctx, - const DWARFDIE &parent_die, - bool skip_artificial, - bool &is_static, - bool &is_variadic, - std::vector& function_param_types, - std::vector& function_param_decls, - unsigned &type_quals) -{ - if (!parent_die) - return 0; - - size_t arg_idx = 0; - for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) - { - const dw_tag_t tag = die.Tag(); - switch (tag) - { - case DW_TAG_formal_parameter: - { - DWARFAttributes attributes; - const size_t num_attributes = die.GetAttributes(attributes); - if (num_attributes > 0) - { - const char *name = NULL; - Declaration decl; - dw_offset_t param_type_die_offset = DW_INVALID_OFFSET; - bool is_artificial = false; - // one of None, Auto, Register, Extern, Static, PrivateExtern - - clang::StorageClass storage = clang::SC_None; - uint32_t i; - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_name: name = form_value.AsCString(); - break; - case DW_AT_type: param_type_die_offset = form_value.Reference(); break; - case DW_AT_artificial: is_artificial = form_value.Boolean(); break; - case DW_AT_location: - // if (form_value.BlockData()) - // { - // const DWARFDataExtractor& debug_info_data = debug_info(); - // uint32_t block_length = form_value.Unsigned(); - // DWARFDataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); - // } - // else - // { - // } - // break; - case DW_AT_const_value: - case DW_AT_default_value: - case DW_AT_description: - case DW_AT_endianity: - case DW_AT_is_optional: - case DW_AT_segment: - case DW_AT_variable_parameter: - default: - case DW_AT_abstract_origin: - case DW_AT_sibling: - break; - } - } - } - - bool skip = false; - if (skip_artificial) - { - if (is_artificial) - { - // In order to determine if a C++ member function is - // "const" we have to look at the const-ness of "this"... - // Ugly, but that - if (arg_idx == 0) - { - if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) - { - // Often times compilers omit the "this" name for the - // specification DIEs, so we can't rely upon the name - // being in the formal parameter DIE... - if (name == NULL || ::strcmp(name, "this")==0) - { - Type *this_type = die.ResolveTypeUID (param_type_die_offset); - if (this_type) - { - uint32_t encoding_mask = this_type->GetEncodingMask(); - if (encoding_mask & Type::eEncodingIsPointerUID) - { - is_static = false; - - if (encoding_mask & (1u << Type::eEncodingIsConstUID)) - type_quals |= clang::Qualifiers::Const; - if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) - type_quals |= clang::Qualifiers::Volatile; - } - } - } - } - } - skip = true; - } - else - { - - // HACK: Objective C formal parameters "self" and "_cmd" - // are not marked as artificial in the DWARF... - CompileUnit *comp_unit = die.GetLLDBCompileUnit(); - if (comp_unit) - { - switch (comp_unit->GetLanguage()) - { - case eLanguageTypeObjC: - case eLanguageTypeObjC_plus_plus: - if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) - skip = true; - break; - default: - break; - } - } - } - } - - if (!skip) - { - Type *type = die.ResolveTypeUID(param_type_die_offset); - if (type) - { - function_param_types.push_back (type->GetForwardCompilerType ()); - - clang::ParmVarDecl *param_var_decl = CreateParameterDeclaration (name, - type->GetForwardCompilerType (), - storage); - assert(param_var_decl); - function_param_decls.push_back(param_var_decl); - - SetMetadataAsUserID (param_var_decl, die.GetID()); - } - } - } - arg_idx++; - } - break; - - case DW_TAG_unspecified_parameters: - is_variadic = true; - break; - - case DW_TAG_template_type_parameter: - case DW_TAG_template_value_parameter: - // The one caller of this was never using the template_param_infos, - // and the local variable was taking up a large amount of stack space - // in SymbolFileDWARF::ParseType() so this was removed. If we ever need - // the template params back, we can add them back. - // ParseTemplateDIE (dwarf_cu, die, template_param_infos); - break; - - default: - break; - } - } - return arg_idx; -} - -void -ClangASTContext::ParseChildArrayInfo (const SymbolContext& sc, - const DWARFDIE &parent_die, - int64_t& first_index, - std::vector& element_orders, - uint32_t& byte_stride, - uint32_t& bit_stride) -{ - if (!parent_die) - return; - - for (DWARFDIE die = parent_die.GetFirstChild(); die.IsValid(); die = die.GetSibling()) - { - const dw_tag_t tag = die.Tag(); - switch (tag) - { - case DW_TAG_subrange_type: - { - DWARFAttributes attributes; - const size_t num_child_attributes = die.GetAttributes(attributes); - if (num_child_attributes > 0) - { - uint64_t num_elements = 0; - uint64_t lower_bound = 0; - uint64_t upper_bound = 0; - bool upper_bound_valid = false; - uint32_t i; - for (i=0; i= lower_bound) - num_elements = upper_bound - lower_bound + 1; - } - - element_orders.push_back (num_elements); - } - } - break; - } - } + DWARFASTParserClang *dwarf_ast_parser = (DWARFASTParserClang *)ast->GetDWARFParser(); + return dwarf_ast_parser->LayoutRecordType(record_decl, bit_size, alignment, field_offsets, base_offsets, vbase_offsets); } //---------------------------------------------------------------------- @@ -10673,1880 +8944,3 @@ ClangASTContext::DeclContextGetClangASTContext (const CompilerDeclContext &dc) return nullptr; } - -clang::DeclContext * -ClangASTContext::GetClangDeclContextForDIE (const DWARFDIE &die) -{ - if (die) - { - clang::DeclContext *decl_ctx = GetCachedClangDeclContextForDIE (die); - if (decl_ctx) - return decl_ctx; - - bool try_parsing_type = true; - switch (die.Tag()) - { - case DW_TAG_compile_unit: - decl_ctx = m_clang_tu_decl; - try_parsing_type = false; - break; - - case DW_TAG_namespace: - decl_ctx = ResolveNamespaceDIE (die); - try_parsing_type = false; - break; - - default: - break; - } - - if (decl_ctx == nullptr && try_parsing_type) - { - Type* type = die.GetDWARF()->ResolveType (die); - if (type) - decl_ctx = GetCachedClangDeclContextForDIE (die); - } - - if (decl_ctx) - { - LinkDeclContextToDIE (decl_ctx, die); - return decl_ctx; - } - } - return nullptr; -} - -clang::NamespaceDecl * -ClangASTContext::ResolveNamespaceDIE (const DWARFDIE &die) -{ - if (die && die.Tag() == DW_TAG_namespace) - { - // See if we already parsed this namespace DIE and associated it with a - // uniqued namespace declaration - clang::NamespaceDecl *namespace_decl = static_cast(m_die_to_decl_ctx[die.GetDIE()]); - if (namespace_decl) - return namespace_decl; - else - { - const char *namespace_name = die.GetName(); - clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); - namespace_decl = GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); - Log *log = nullptr;// (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); - if (log) - { - SymbolFileDWARF *dwarf = die.GetDWARF(); - if (namespace_name) - { - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", - static_cast(getASTContext()), - die.GetID(), - namespace_name, - static_cast(namespace_decl), - static_cast(namespace_decl->getOriginalNamespace())); - } - else - { - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "ASTContext => %p: 0x%8.8" PRIx64 ": DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", - static_cast(getASTContext()), - die.GetID(), - static_cast(namespace_decl), - static_cast(namespace_decl->getOriginalNamespace())); - } - } - - if (namespace_decl) - LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); - return namespace_decl; - } - } - return nullptr; -} - -clang::DeclContext * -ClangASTContext::GetClangDeclContextContainingDIE (const DWARFDIE &die, - DWARFDIE *decl_ctx_die_copy) -{ - if (m_clang_tu_decl == NULL) - m_clang_tu_decl = getASTContext()->getTranslationUnitDecl(); - - SymbolFileDWARF *dwarf = die.GetDWARF(); - - DWARFDIE decl_ctx_die = dwarf->GetDeclContextDIEContainingDIE (die); - - if (decl_ctx_die_copy) - *decl_ctx_die_copy = decl_ctx_die; - - if (decl_ctx_die) - { - clang::DeclContext *clang_decl_ctx = GetClangDeclContextForDIE (decl_ctx_die); - if (clang_decl_ctx) - return clang_decl_ctx; - } - return m_clang_tu_decl; -} - - - -TypeSP -ClangASTContext::ParseTypeFromDWARF (const SymbolContext& sc, - const DWARFDIE &die, - Log *log, - bool *type_is_new_ptr) -{ - TypeSP type_sp; - - if (type_is_new_ptr) - *type_is_new_ptr = false; - -#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) - static DIEStack g_die_stack; - DIEStack::ScopedPopper scoped_die_logger(g_die_stack); -#endif - - AccessType accessibility = eAccessNone; - if (die) - { - SymbolFileDWARF *dwarf = die.GetDWARF(); - if (log) - { - DWARFDIE context_die; - clang::DeclContext *context = GetClangDeclContextContainingDIE (die, &context_die); - - dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')", - die.GetOffset(), - static_cast(context), - context_die.GetOffset(), - die.GetTagAsCString(), - die.GetName()); - -#if defined(LLDB_CONFIGURATION_DEBUG) || defined(LLDB_CONFIGURATION_RELEASE) - scoped_die_logger.Push (die); - g_die_stack.LogDIEs(log); -#endif - } - // - // Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); - // if (log && dwarf_cu) - // { - // StreamString s; - // die->DumpLocation (this, dwarf_cu, s); - // dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); - // - // } - - Type *type_ptr = dwarf->m_die_to_type.lookup (die.GetDIE()); - TypeList* type_list = dwarf->GetTypeList(); - if (type_ptr == NULL) - { - if (type_is_new_ptr) - *type_is_new_ptr = true; - - const dw_tag_t tag = die.Tag(); - - bool is_forward_declaration = false; - DWARFAttributes attributes; - const char *type_name_cstr = NULL; - ConstString type_name_const_str; - Type::ResolveState resolve_state = Type::eResolveStateUnresolved; - uint64_t byte_size = 0; - Declaration decl; - - Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; - CompilerType clang_type; - DWARFFormValue form_value; - - dw_attr_t attr; - - switch (tag) - { - case DW_TAG_base_type: - case DW_TAG_pointer_type: - case DW_TAG_reference_type: - case DW_TAG_rvalue_reference_type: - case DW_TAG_typedef: - case DW_TAG_const_type: - case DW_TAG_restrict_type: - case DW_TAG_volatile_type: - case DW_TAG_unspecified_type: - { - // Set a bit that lets us know that we are currently parsing this - dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; - - const size_t num_attributes = die.GetAttributes (attributes); - uint32_t encoding = 0; - lldb::user_id_t encoding_uid = LLDB_INVALID_UID; - - if (num_attributes > 0) - { - uint32_t i; - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_name: - - type_name_cstr = form_value.AsCString(); - // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't - // include the "&"... - if (tag == DW_TAG_reference_type) - { - if (strchr (type_name_cstr, '&') == NULL) - type_name_cstr = NULL; - } - if (type_name_cstr) - type_name_const_str.SetCString(type_name_cstr); - break; - case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; - case DW_AT_encoding: encoding = form_value.Unsigned(); break; - case DW_AT_type: encoding_uid = form_value.Reference(); break; - default: - case DW_AT_sibling: - break; - } - } - } - } - - DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\") type => 0x%8.8lx\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid); - - switch (tag) - { - default: - break; - - case DW_TAG_unspecified_type: - if (strcmp(type_name_cstr, "nullptr_t") == 0 || - strcmp(type_name_cstr, "decltype(nullptr)") == 0 ) - { - resolve_state = Type::eResolveStateFull; - clang_type = GetBasicType(eBasicTypeNullPtr); - break; - } - // Fall through to base type below in case we can handle the type there... - - case DW_TAG_base_type: - resolve_state = Type::eResolveStateFull; - clang_type = GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, - encoding, - byte_size * 8); - break; - - case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; - case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; - case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break; - case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; - case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; - case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; - case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; - } - - if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL) - { - bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus); - - if (translation_unit_is_objc) - { - if (type_name_cstr != NULL) - { - static ConstString g_objc_type_name_id("id"); - static ConstString g_objc_type_name_Class("Class"); - static ConstString g_objc_type_name_selector("SEL"); - - if (type_name_const_str == g_objc_type_name_id) - { - if (log) - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.", - die.GetOffset(), - die.GetTagAsCString(), - die.GetName()); - clang_type = GetBasicType(eBasicTypeObjCID); - encoding_data_type = Type::eEncodingIsUID; - encoding_uid = LLDB_INVALID_UID; - resolve_state = Type::eResolveStateFull; - - } - else if (type_name_const_str == g_objc_type_name_Class) - { - if (log) - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.", - die.GetOffset(), - die.GetTagAsCString(), - die.GetName()); - clang_type = GetBasicType(eBasicTypeObjCClass); - encoding_data_type = Type::eEncodingIsUID; - encoding_uid = LLDB_INVALID_UID; - resolve_state = Type::eResolveStateFull; - } - else if (type_name_const_str == g_objc_type_name_selector) - { - if (log) - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.", - die.GetOffset(), - die.GetTagAsCString(), - die.GetName()); - clang_type = GetBasicType(eBasicTypeObjCSel); - encoding_data_type = Type::eEncodingIsUID; - encoding_uid = LLDB_INVALID_UID; - resolve_state = Type::eResolveStateFull; - } - } - else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid != LLDB_INVALID_UID) - { - // Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id". - - const DWARFDIE encoding_die = die.GetDIE(encoding_uid); - - if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type) - { - if (const char *struct_name = encoding_die.GetName()) - { - if (!strcmp(struct_name, "objc_object")) - { - if (log) - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.", - die.GetOffset(), - die.GetTagAsCString(), - die.GetName()); - clang_type = GetBasicType(eBasicTypeObjCID); - encoding_data_type = Type::eEncodingIsUID; - encoding_uid = LLDB_INVALID_UID; - resolve_state = Type::eResolveStateFull; - } - } - } - } - } - } - - type_sp.reset( new Type (die.GetID(), - dwarf, - type_name_const_str, - byte_size, - NULL, - encoding_uid, - encoding_data_type, - &decl, - clang_type, - resolve_state)); - - dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); - - // Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); - // if (encoding_type != NULL) - // { - // if (encoding_type != DIE_IS_BEING_PARSED) - // type_sp->SetEncodingType(encoding_type); - // else - // m_indirect_fixups.push_back(type_sp.get()); - // } - } - break; - - case DW_TAG_structure_type: - case DW_TAG_union_type: - case DW_TAG_class_type: - { - // Set a bit that lets us know that we are currently parsing this - dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; - bool byte_size_valid = false; - - LanguageType class_language = eLanguageTypeUnknown; - bool is_complete_objc_class = false; - //bool struct_is_class = false; - const size_t num_attributes = die.GetAttributes (attributes); - if (num_attributes > 0) - { - uint32_t i; - for (i=0; iDW_AT_decl_file_attributes_are_invalid()) - { - // llvm-gcc outputs invalid DW_AT_decl_file attributes that always - // point to the compile unit file, so we clear this invalid value - // so that we can still unique types efficiently. - decl.SetFile(FileSpec ("", false)); - } - else - decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); - break; - - case DW_AT_decl_line: - decl.SetLine(form_value.Unsigned()); - break; - - case DW_AT_decl_column: - decl.SetColumn(form_value.Unsigned()); - break; - - case DW_AT_name: - type_name_cstr = form_value.AsCString(); - type_name_const_str.SetCString(type_name_cstr); - break; - - case DW_AT_byte_size: - byte_size = form_value.Unsigned(); - byte_size_valid = true; - break; - - case DW_AT_accessibility: - accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); - break; - - case DW_AT_declaration: - is_forward_declaration = form_value.Boolean(); - break; - - case DW_AT_APPLE_runtime_class: - class_language = (LanguageType)form_value.Signed(); - break; - - case DW_AT_APPLE_objc_complete_type: - is_complete_objc_class = form_value.Signed(); - break; - - case DW_AT_allocated: - case DW_AT_associated: - case DW_AT_data_location: - case DW_AT_description: - case DW_AT_start_scope: - case DW_AT_visibility: - default: - case DW_AT_sibling: - break; - } - } - } - } - - // UniqueDWARFASTType is large, so don't create a local variables on the - // stack, put it on the heap. This function is often called recursively - // and clang isn't good and sharing the stack space for variables in different blocks. - std::unique_ptr unique_ast_entry_ap(new UniqueDWARFASTType()); - - // Only try and unique the type if it has a name. - if (type_name_const_str && - dwarf->GetUniqueDWARFASTTypeMap().Find (type_name_const_str, - die, - decl, - byte_size_valid ? byte_size : -1, - *unique_ast_entry_ap)) - { - // We have already parsed this type or from another - // compile unit. GCC loves to use the "one definition - // rule" which can result in multiple definitions - // of the same class over and over in each compile - // unit. - type_sp = unique_ast_entry_ap->m_type_sp; - if (type_sp) - { - dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); - return type_sp; - } - } - - DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); - - int tag_decl_kind = -1; - AccessType default_accessibility = eAccessNone; - if (tag == DW_TAG_structure_type) - { - tag_decl_kind = clang::TTK_Struct; - default_accessibility = eAccessPublic; - } - else if (tag == DW_TAG_union_type) - { - tag_decl_kind = clang::TTK_Union; - default_accessibility = eAccessPublic; - } - else if (tag == DW_TAG_class_type) - { - tag_decl_kind = clang::TTK_Class; - default_accessibility = eAccessPrivate; - } - - if (byte_size_valid && byte_size == 0 && type_name_cstr && - die.HasChildren() == false && - sc.comp_unit->GetLanguage() == eLanguageTypeObjC) - { - // Work around an issue with clang at the moment where - // forward declarations for objective C classes are emitted - // as: - // DW_TAG_structure_type [2] - // DW_AT_name( "ForwardObjcClass" ) - // DW_AT_byte_size( 0x00 ) - // DW_AT_decl_file( "..." ) - // DW_AT_decl_line( 1 ) - // - // Note that there is no DW_AT_declaration and there are - // no children, and the byte size is zero. - is_forward_declaration = true; - } - - if (class_language == eLanguageTypeObjC || - class_language == eLanguageTypeObjC_plus_plus) - { - if (!is_complete_objc_class && die.Supports_DW_AT_APPLE_objc_complete_type()) - { - // We have a valid eSymbolTypeObjCClass class symbol whose - // name matches the current objective C class that we - // are trying to find and this DIE isn't the complete - // definition (we checked is_complete_objc_class above and - // know it is false), so the real definition is in here somewhere - type_sp = dwarf->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); - - if (!type_sp) - { - SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); - if (debug_map_symfile) - { - // We weren't able to find a full declaration in - // this DWARF, see if we have a declaration anywhere - // else... - type_sp = debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); - } - } - - if (type_sp) - { - if (log) - { - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8" PRIx64, - static_cast(this), - die.GetOffset(), - DW_TAG_value_to_name(tag), - type_name_cstr, - type_sp->GetID()); - } - - // We found a real definition for this type elsewhere - // so lets use it and cache the fact that we found - // a complete type for this die - dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); - return type_sp; - } - } - } - - - if (is_forward_declaration) - { - // We have a forward declaration to a type and we need - // to try and find a full declaration. We look in the - // current type index just in case we have a forward - // declaration followed by an actual declarations in the - // DWARF. If this fails, we need to look elsewhere... - if (log) - { - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", - static_cast(this), - die.GetOffset(), - DW_TAG_value_to_name(tag), - type_name_cstr); - } - - DWARFDeclContext die_decl_ctx; - die.GetDWARFDeclContext(die_decl_ctx); - - //type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); - type_sp = dwarf->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); - - if (!type_sp) - { - SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); - if (debug_map_symfile) - { - // We weren't able to find a full declaration in - // this DWARF, see if we have a declaration anywhere - // else... - type_sp = debug_map_symfile->FindDefinitionTypeForDWARFDeclContext (die_decl_ctx); - } - } - - if (type_sp) - { - if (log) - { - dwarf->GetObjectFile()->GetModule()->LogMessage (log, - "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8" PRIx64, - static_cast(this), - die.GetOffset(), - DW_TAG_value_to_name(tag), - type_name_cstr, - type_sp->GetID()); - } - - // We found a real definition for this type elsewhere - // so lets use it and cache the fact that we found - // a complete type for this die - dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); - return type_sp; - } - } - assert (tag_decl_kind != -1); - bool clang_type_was_created = false; - clang_type.SetCompilerType(this, dwarf->m_forward_decl_die_to_clang_type.lookup (die.GetDIE())); - if (!clang_type) - { - clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (die, nullptr); - if (accessibility == eAccessNone && decl_ctx) - { - // Check the decl context that contains this class/struct/union. - // If it is a class we must give it an accessibility. - const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); - if (DeclKindIsCXXClass (containing_decl_kind)) - accessibility = default_accessibility; - } - - ClangASTMetadata metadata; - metadata.SetUserID(die.GetID()); - metadata.SetIsDynamicCXXType(dwarf->ClassOrStructIsVirtual (die)); - - if (type_name_cstr && strchr (type_name_cstr, '<')) - { - ClangASTContext::TemplateParameterInfos template_param_infos; - if (ParseTemplateParameterInfos (die, template_param_infos)) - { - clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx, - accessibility, - type_name_cstr, - tag_decl_kind, - template_param_infos); - - clang::ClassTemplateSpecializationDecl *class_specialization_decl = CreateClassTemplateSpecializationDecl (decl_ctx, - class_template_decl, - tag_decl_kind, - template_param_infos); - clang_type = CreateClassTemplateSpecializationType (class_specialization_decl); - clang_type_was_created = true; - - SetMetadata (class_template_decl, metadata); - SetMetadata (class_specialization_decl, metadata); - } - } - - if (!clang_type_was_created) - { - clang_type_was_created = true; - clang_type = CreateRecordType (decl_ctx, - accessibility, - type_name_cstr, - tag_decl_kind, - class_language, - &metadata); - } - } - - // Store a forward declaration to this class type in case any - // parameters in any class methods need it for the clang - // types for function prototypes. - LinkDeclContextToDIE(GetDeclContextForType(clang_type), die); - type_sp.reset (new Type (die.GetID(), - dwarf, - type_name_const_str, - byte_size, - NULL, - LLDB_INVALID_UID, - Type::eEncodingIsUID, - &decl, - clang_type, - Type::eResolveStateForward)); - - type_sp->SetIsCompleteObjCClass(is_complete_objc_class); - - - // Add our type to the unique type map so we don't - // end up creating many copies of the same type over - // and over in the ASTContext for our module - unique_ast_entry_ap->m_type_sp = type_sp; - unique_ast_entry_ap->m_die = die; - unique_ast_entry_ap->m_declaration = decl; - unique_ast_entry_ap->m_byte_size = byte_size; - dwarf->GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, - *unique_ast_entry_ap); - - if (is_forward_declaration && die.HasChildren()) - { - // Check to see if the DIE actually has a definition, some version of GCC will - // emit DIEs with DW_AT_declaration set to true, but yet still have subprogram, - // members, or inheritance, so we can't trust it - DWARFDIE child_die = die.GetFirstChild(); - while (child_die) - { - switch (child_die.Tag()) - { - case DW_TAG_inheritance: - case DW_TAG_subprogram: - case DW_TAG_member: - case DW_TAG_APPLE_property: - case DW_TAG_class_type: - case DW_TAG_structure_type: - case DW_TAG_enumeration_type: - case DW_TAG_typedef: - case DW_TAG_union_type: - child_die.Clear(); - is_forward_declaration = false; - break; - default: - child_die = child_die.GetSibling(); - break; - } - } - } - - if (!is_forward_declaration) - { - // Always start the definition for a class type so that - // if the class has child classes or types that require - // the class to be created for use as their decl contexts - // the class will be ready to accept these child definitions. - if (die.HasChildren() == false) - { - // No children for this struct/union/class, lets finish it - ClangASTContext::StartTagDeclarationDefinition (clang_type); - ClangASTContext::CompleteTagDeclarationDefinition (clang_type); - - if (tag == DW_TAG_structure_type) // this only applies in C - { - clang::RecordDecl *record_decl = ClangASTContext::GetAsRecordDecl(clang_type); - - if (record_decl) - m_record_decl_to_layout_map.insert(std::make_pair(record_decl, LayoutInfo())); - } - } - else if (clang_type_was_created) - { - // Start the definition if the class is not objective C since - // the underlying decls respond to isCompleteDefinition(). Objective - // C decls don't respond to isCompleteDefinition() so we can't - // start the declaration definition right away. For C++ class/union/structs - // we want to start the definition in case the class is needed as the - // declaration context for a contained class or type without the need - // to complete that type.. - - if (class_language != eLanguageTypeObjC && - class_language != eLanguageTypeObjC_plus_plus) - ClangASTContext::StartTagDeclarationDefinition (clang_type); - - // Leave this as a forward declaration until we need - // to know the details of the type. lldb_private::Type - // will automatically call the SymbolFile virtual function - // "SymbolFileDWARF::CompleteType(Type *)" - // When the definition needs to be defined. - dwarf->m_forward_decl_die_to_clang_type[die.GetDIE()] = clang_type.GetOpaqueQualType(); - dwarf->m_forward_decl_clang_type_to_die[ClangASTContext::RemoveFastQualifiers(clang_type).GetOpaqueQualType()] = die.GetDIE(); - SetHasExternalStorage (clang_type.GetOpaqueQualType(), true); - } - } - - } - break; - - case DW_TAG_enumeration_type: - { - // Set a bit that lets us know that we are currently parsing this - dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; - - lldb::user_id_t encoding_uid = DW_INVALID_OFFSET; - - const size_t num_attributes = die.GetAttributes (attributes); - if (num_attributes > 0) - { - uint32_t i; - - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_name: - type_name_cstr = form_value.AsCString(); - type_name_const_str.SetCString(type_name_cstr); - break; - case DW_AT_type: encoding_uid = form_value.Reference(); break; - case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; - case DW_AT_accessibility: break; //accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; - case DW_AT_declaration: break; //is_forward_declaration = form_value.Boolean(); break; - case DW_AT_allocated: - case DW_AT_associated: - case DW_AT_bit_stride: - case DW_AT_byte_stride: - case DW_AT_data_location: - case DW_AT_description: - case DW_AT_start_scope: - case DW_AT_visibility: - case DW_AT_specification: - case DW_AT_abstract_origin: - case DW_AT_sibling: - break; - } - } - } - - DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); - - CompilerType enumerator_clang_type; - clang_type.SetCompilerType (this, dwarf->m_forward_decl_die_to_clang_type.lookup (die.GetDIE())); - if (!clang_type) - { - if (encoding_uid != DW_INVALID_OFFSET) - { - Type *enumerator_type = dwarf->ResolveTypeUID(encoding_uid); - if (enumerator_type) - enumerator_clang_type = enumerator_type->GetFullCompilerType (); - } - - if (!enumerator_clang_type) - enumerator_clang_type = GetBuiltinTypeForDWARFEncodingAndBitSize (NULL, - DW_ATE_signed, - byte_size * 8); - - clang_type = CreateEnumerationType (type_name_cstr, - GetClangDeclContextContainingDIE (die, nullptr), - decl, - enumerator_clang_type); - } - else - { - enumerator_clang_type = GetEnumerationIntegerType (clang_type.GetOpaqueQualType()); - } - - LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die); - - type_sp.reset( new Type (die.GetID(), - dwarf, - type_name_const_str, - byte_size, - NULL, - encoding_uid, - Type::eEncodingIsUID, - &decl, - clang_type, - Type::eResolveStateForward)); - - ClangASTContext::StartTagDeclarationDefinition (clang_type); - if (die.HasChildren()) - { - SymbolContext cu_sc(die.GetLLDBCompileUnit()); - bool is_signed = false; - enumerator_clang_type.IsIntegerType(is_signed); - ParseChildEnumerators(cu_sc, clang_type, is_signed, type_sp->GetByteSize(), die); - } - ClangASTContext::CompleteTagDeclarationDefinition (clang_type); - } - } - break; - - case DW_TAG_inlined_subroutine: - case DW_TAG_subprogram: - case DW_TAG_subroutine_type: - { - // Set a bit that lets us know that we are currently parsing this - dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; - - //const char *mangled = NULL; - dw_offset_t type_die_offset = DW_INVALID_OFFSET; - bool is_variadic = false; - bool is_inline = false; - bool is_static = false; - bool is_virtual = false; - bool is_explicit = false; - bool is_artificial = false; - dw_offset_t specification_die_offset = DW_INVALID_OFFSET; - dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET; - dw_offset_t object_pointer_die_offset = DW_INVALID_OFFSET; - - unsigned type_quals = 0; - clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern - - - const size_t num_attributes = die.GetAttributes (attributes); - if (num_attributes > 0) - { - uint32_t i; - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_name: - type_name_cstr = form_value.AsCString(); - type_name_const_str.SetCString(type_name_cstr); - break; - - case DW_AT_linkage_name: - case DW_AT_MIPS_linkage_name: break; // mangled = form_value.AsCString(&dwarf->get_debug_str_data()); break; - case DW_AT_type: type_die_offset = form_value.Reference(); break; - case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; - case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; - case DW_AT_inline: is_inline = form_value.Boolean(); break; - case DW_AT_virtuality: is_virtual = form_value.Boolean(); break; - case DW_AT_explicit: is_explicit = form_value.Boolean(); break; - case DW_AT_artificial: is_artificial = form_value.Boolean(); break; - - - case DW_AT_external: - if (form_value.Unsigned()) - { - if (storage == clang::SC_None) - storage = clang::SC_Extern; - else - storage = clang::SC_PrivateExtern; - } - break; - - case DW_AT_specification: - specification_die_offset = form_value.Reference(); - break; - - case DW_AT_abstract_origin: - abstract_origin_die_offset = form_value.Reference(); - break; - - case DW_AT_object_pointer: - object_pointer_die_offset = form_value.Reference(); - break; - - case DW_AT_allocated: - case DW_AT_associated: - case DW_AT_address_class: - case DW_AT_calling_convention: - case DW_AT_data_location: - case DW_AT_elemental: - case DW_AT_entry_pc: - case DW_AT_frame_base: - case DW_AT_high_pc: - case DW_AT_low_pc: - case DW_AT_prototyped: - case DW_AT_pure: - case DW_AT_ranges: - case DW_AT_recursive: - case DW_AT_return_addr: - case DW_AT_segment: - case DW_AT_start_scope: - case DW_AT_static_link: - case DW_AT_trampoline: - case DW_AT_visibility: - case DW_AT_vtable_elem_location: - case DW_AT_description: - case DW_AT_sibling: - break; - } - } - } - } - - std::string object_pointer_name; - if (object_pointer_die_offset != DW_INVALID_OFFSET) - { - DWARFDIE object_pointer_die = die.GetDIE (object_pointer_die_offset); - if (object_pointer_die) - { - const char *object_pointer_name_cstr = object_pointer_die.GetName(); - if (object_pointer_name_cstr) - object_pointer_name = object_pointer_name_cstr; - } - } - - DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); - - CompilerType return_clang_type; - Type *func_type = NULL; - - if (type_die_offset != DW_INVALID_OFFSET) - func_type = dwarf->ResolveTypeUID(type_die_offset); - - if (func_type) - return_clang_type = func_type->GetForwardCompilerType (); - else - return_clang_type = GetBasicType(eBasicTypeVoid); - - - std::vector function_param_types; - std::vector function_param_decls; - - // Parse the function children for the parameters - - DWARFDIE decl_ctx_die; - clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (die, &decl_ctx_die); - const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); - - const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); - // Start off static. This will be set to false in ParseChildParameters(...) - // if we find a "this" parameters as the first parameter - if (is_cxx_method) - is_static = true; - - if (die.HasChildren()) - { - bool skip_artificial = true; - ParseChildParameters (sc, - containing_decl_ctx, - die, - skip_artificial, - is_static, - is_variadic, - function_param_types, - function_param_decls, - type_quals); - } - - // clang_type will get the function prototype clang type after this call - clang_type = CreateFunctionType (return_clang_type, - function_param_types.data(), - function_param_types.size(), - is_variadic, - type_quals); - - bool ignore_containing_context = false; - - if (type_name_cstr) - { - bool type_handled = false; - if (tag == DW_TAG_subprogram || - tag == DW_TAG_inlined_subroutine) - { - ObjCLanguageRuntime::MethodName objc_method (type_name_cstr, true); - if (objc_method.IsValid(true)) - { - CompilerType class_opaque_type; - ConstString class_name(objc_method.GetClassName()); - if (class_name) - { - TypeSP complete_objc_class_type_sp (dwarf->FindCompleteObjCDefinitionTypeForDIE (DWARFDIE(), class_name, false)); - - if (complete_objc_class_type_sp) - { - CompilerType type_clang_forward_type = complete_objc_class_type_sp->GetForwardCompilerType (); - if (ClangASTContext::IsObjCObjectOrInterfaceType(type_clang_forward_type)) - class_opaque_type = type_clang_forward_type; - } - } - - if (class_opaque_type) - { - // If accessibility isn't set to anything valid, assume public for - // now... - if (accessibility == eAccessNone) - accessibility = eAccessPublic; - - clang::ObjCMethodDecl *objc_method_decl = AddMethodToObjCObjectType (class_opaque_type, - type_name_cstr, - clang_type, - accessibility, - is_artificial); - type_handled = objc_method_decl != NULL; - if (type_handled) - { - LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); - SetMetadataAsUserID (objc_method_decl, die.GetID()); - } - else - { - dwarf->GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", - die.GetOffset(), - tag, - DW_TAG_value_to_name(tag)); - } - } - } - else if (is_cxx_method) - { - // Look at the parent of this DIE and see if is is - // a class or struct and see if this is actually a - // C++ method - Type *class_type = dwarf->ResolveType (decl_ctx_die); - if (class_type) - { - if (class_type->GetID() != decl_ctx_die.GetID()) - { - // We uniqued the parent class of this function to another class - // so we now need to associate all dies under "decl_ctx_die" to - // DIEs in the DIE for "class_type"... - SymbolFileDWARF *class_symfile = NULL; - DWARFDIE class_type_die; - - SymbolFileDWARFDebugMap *debug_map_symfile = dwarf->GetDebugMapSymfile(); - if (debug_map_symfile) - { - class_symfile = debug_map_symfile->GetSymbolFileByOSOIndex(SymbolFileDWARFDebugMap::GetOSOIndexFromUserID(class_type->GetID())); - class_type_die = class_symfile->DebugInfo()->GetDIE (class_type->GetID()); - } - else - { - class_symfile = dwarf; - class_type_die = dwarf->DebugInfo()->GetDIE (class_type->GetID()); - } - if (class_type_die) - { - DWARFDIECollection failures; - - CopyUniqueClassMethodTypes (decl_ctx_die, - class_type_die, - class_type, - failures); - - // FIXME do something with these failures that's smarter than - // just dropping them on the ground. Unfortunately classes don't - // like having stuff added to them after their definitions are - // complete... - - type_ptr = dwarf->m_die_to_type[die.GetDIE()]; - if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) - { - type_sp = type_ptr->shared_from_this(); - break; - } - } - } - - if (specification_die_offset != DW_INVALID_OFFSET) - { - // We have a specification which we are going to base our function - // prototype off of, so we need this type to be completed so that the - // m_die_to_decl_ctx for the method in the specification has a valid - // clang decl context. - class_type->GetForwardCompilerType (); - // If we have a specification, then the function type should have been - // made with the specification and not with this die. - DWARFDIE spec_die = dwarf->DebugInfo()->GetDIE(specification_die_offset); - clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (spec_die); - if (spec_clang_decl_ctx) - { - LinkDeclContextToDIE(spec_clang_decl_ctx, die); - } - else - { - dwarf->GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x) has no decl\n", - die.GetID(), - specification_die_offset); - } - type_handled = true; - } - else if (abstract_origin_die_offset != DW_INVALID_OFFSET) - { - // We have a specification which we are going to base our function - // prototype off of, so we need this type to be completed so that the - // m_die_to_decl_ctx for the method in the abstract origin has a valid - // clang decl context. - class_type->GetForwardCompilerType (); - - DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE (abstract_origin_die_offset); - clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (abs_die); - if (abs_clang_decl_ctx) - { - LinkDeclContextToDIE (abs_clang_decl_ctx, die); - } - else - { - dwarf->GetObjectFile()->GetModule()->ReportWarning ("0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x) has no decl\n", - die.GetID(), - abstract_origin_die_offset); - } - type_handled = true; - } - else - { - CompilerType class_opaque_type = class_type->GetForwardCompilerType (); - if (ClangASTContext::IsCXXClassType(class_opaque_type)) - { - if (class_opaque_type.IsBeingDefined ()) - { - // Neither GCC 4.2 nor clang++ currently set a valid accessibility - // in the DWARF for C++ methods... Default to public for now... - if (accessibility == eAccessNone) - accessibility = eAccessPublic; - - if (!is_static && !die.HasChildren()) - { - // We have a C++ member function with no children (this pointer!) - // and clang will get mad if we try and make a function that isn't - // well formed in the DWARF, so we will just skip it... - type_handled = true; - } - else - { - clang::CXXMethodDecl *cxx_method_decl; - // REMOVE THE CRASH DESCRIPTION BELOW - Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8" PRIx64 " from %s", - type_name_cstr, - class_type->GetName().GetCString(), - die.GetID(), - dwarf->GetObjectFile()->GetFileSpec().GetPath().c_str()); - - const bool is_attr_used = false; - - cxx_method_decl = AddMethodToCXXRecordType (class_opaque_type.GetOpaqueQualType(), - type_name_cstr, - clang_type, - accessibility, - is_virtual, - is_static, - is_inline, - is_explicit, - is_attr_used, - is_artificial); - - type_handled = cxx_method_decl != NULL; - - if (type_handled) - { - LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); - - Host::SetCrashDescription (NULL); - - - ClangASTMetadata metadata; - metadata.SetUserID(die.GetID()); - - if (!object_pointer_name.empty()) - { - metadata.SetObjectPtrName(object_pointer_name.c_str()); - if (log) - log->Printf ("Setting object pointer name: %s on method object %p.\n", - object_pointer_name.c_str(), - static_cast(cxx_method_decl)); - } - SetMetadata (cxx_method_decl, metadata); - } - else - { - ignore_containing_context = true; - } - } - } - else - { - // We were asked to parse the type for a method in a class, yet the - // class hasn't been asked to complete itself through the - // clang::ExternalASTSource protocol, so we need to just have the - // class complete itself and do things the right way, then our - // DIE should then have an entry in the dwarf->m_die_to_type map. First - // we need to modify the dwarf->m_die_to_type so it doesn't think we are - // trying to parse this DIE anymore... - dwarf->m_die_to_type[die.GetDIE()] = NULL; - - // Now we get the full type to force our class type to complete itself - // using the clang::ExternalASTSource protocol which will parse all - // base classes and all methods (including the method for this DIE). - class_type->GetFullCompilerType (); - - // The type for this DIE should have been filled in the function call above - type_ptr = dwarf->m_die_to_type[die.GetDIE()]; - if (type_ptr && type_ptr != DIE_IS_BEING_PARSED) - { - type_sp = type_ptr->shared_from_this(); - break; - } - - // FIXME This is fixing some even uglier behavior but we really need to - // uniq the methods of each class as well as the class itself. - // - type_handled = true; - } - } - } - } - } - } - - if (!type_handled) - { - // We just have a function that isn't part of a class - clang::FunctionDecl *function_decl = CreateFunctionDeclaration (ignore_containing_context ? GetTranslationUnitDecl() : containing_decl_ctx, - type_name_cstr, - clang_type, - storage, - is_inline); - - // if (template_param_infos.GetSize() > 0) - // { - // clang::FunctionTemplateDecl *func_template_decl = CreateFunctionTemplateDecl (containing_decl_ctx, - // function_decl, - // type_name_cstr, - // template_param_infos); - // - // CreateFunctionTemplateSpecializationInfo (function_decl, - // func_template_decl, - // template_param_infos); - // } - // Add the decl to our DIE to decl context map - assert (function_decl); - LinkDeclContextToDIE(function_decl, die); - if (!function_param_decls.empty()) - SetFunctionParameters (function_decl, - &function_param_decls.front(), - function_param_decls.size()); - - ClangASTMetadata metadata; - metadata.SetUserID(die.GetID()); - - if (!object_pointer_name.empty()) - { - metadata.SetObjectPtrName(object_pointer_name.c_str()); - if (log) - log->Printf ("Setting object pointer name: %s on function object %p.", - object_pointer_name.c_str(), - static_cast(function_decl)); - } - SetMetadata (function_decl, metadata); - } - } - type_sp.reset( new Type (die.GetID(), - dwarf, - type_name_const_str, - 0, - NULL, - LLDB_INVALID_UID, - Type::eEncodingIsUID, - &decl, - clang_type, - Type::eResolveStateFull)); - assert(type_sp.get()); - } - break; - - case DW_TAG_array_type: - { - // Set a bit that lets us know that we are currently parsing this - dwarf->m_die_to_type[die.GetDIE()] = DIE_IS_BEING_PARSED; - - lldb::user_id_t type_die_offset = DW_INVALID_OFFSET; - int64_t first_index = 0; - uint32_t byte_stride = 0; - uint32_t bit_stride = 0; - bool is_vector = false; - const size_t num_attributes = die.GetAttributes (attributes); - - if (num_attributes > 0) - { - uint32_t i; - for (i=0; iGetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; - case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; - case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; - case DW_AT_name: - type_name_cstr = form_value.AsCString(); - type_name_const_str.SetCString(type_name_cstr); - break; - - case DW_AT_type: type_die_offset = form_value.Reference(); break; - case DW_AT_byte_size: break; // byte_size = form_value.Unsigned(); break; - case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; - case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; - case DW_AT_GNU_vector: is_vector = form_value.Boolean(); break; - case DW_AT_accessibility: break; // accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; - case DW_AT_declaration: break; // is_forward_declaration = form_value.Boolean(); break; - case DW_AT_allocated: - case DW_AT_associated: - case DW_AT_data_location: - case DW_AT_description: - case DW_AT_ordering: - case DW_AT_start_scope: - case DW_AT_visibility: - case DW_AT_specification: - case DW_AT_abstract_origin: - case DW_AT_sibling: - break; - } - } - } - - DEBUG_PRINTF ("0x%8.8" PRIx64 ": %s (\"%s\")\n", die.GetID(), DW_TAG_value_to_name(tag), type_name_cstr); - - Type *element_type = dwarf->ResolveTypeUID(type_die_offset); - - if (element_type) - { - std::vector element_orders; - ParseChildArrayInfo(sc, die, first_index, element_orders, byte_stride, bit_stride); - if (byte_stride == 0 && bit_stride == 0) - byte_stride = element_type->GetByteSize(); - CompilerType array_element_type = element_type->GetForwardCompilerType (); - uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; - if (element_orders.size() > 0) - { - uint64_t num_elements = 0; - std::vector::const_reverse_iterator pos; - std::vector::const_reverse_iterator end = element_orders.rend(); - for (pos = element_orders.rbegin(); pos != end; ++pos) - { - num_elements = *pos; - clang_type = CreateArrayType (array_element_type, - num_elements, - is_vector); - array_element_type = clang_type; - array_element_bit_stride = num_elements ? - array_element_bit_stride * num_elements : - array_element_bit_stride; - } - } - else - { - clang_type = CreateArrayType (array_element_type, 0, is_vector); - } - ConstString empty_name; - type_sp.reset( new Type (die.GetID(), - dwarf, - empty_name, - array_element_bit_stride / 8, - NULL, - type_die_offset, - Type::eEncodingIsUID, - &decl, - clang_type, - Type::eResolveStateFull)); - type_sp->SetEncodingType (element_type); - } - } - } - break; - - case DW_TAG_ptr_to_member_type: - { - dw_offset_t type_die_offset = DW_INVALID_OFFSET; - dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET; - - const size_t num_attributes = die.GetAttributes (attributes); - - if (num_attributes > 0) { - uint32_t i; - for (i=0; iResolveTypeUID(type_die_offset); - Type *class_type = dwarf->ResolveTypeUID(containing_type_die_offset); - - CompilerType pointee_clang_type = pointee_type->GetForwardCompilerType (); - CompilerType class_clang_type = class_type->GetLayoutCompilerType (); - - clang_type = ClangASTContext::CreateMemberPointerType(pointee_clang_type, class_clang_type); - - byte_size = clang_type.GetByteSize(nullptr); - - type_sp.reset( new Type (die.GetID(), - dwarf, - type_name_const_str, - byte_size, - NULL, - LLDB_INVALID_UID, - Type::eEncodingIsUID, - NULL, - clang_type, - Type::eResolveStateForward)); - } - - break; - } - default: - dwarf->GetObjectFile()->GetModule()->ReportError ("{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and attach the file at the start of this error message", - die.GetOffset(), - tag, - DW_TAG_value_to_name(tag)); - break; - } - - if (type_sp.get()) - { - DWARFDIE sc_parent_die = SymbolFileDWARF::GetParentSymbolContextDIE(die); - dw_tag_t sc_parent_tag = sc_parent_die.Tag(); - - SymbolContextScope * symbol_context_scope = NULL; - if (sc_parent_tag == DW_TAG_compile_unit) - { - symbol_context_scope = sc.comp_unit; - } - else if (sc.function != NULL && sc_parent_die) - { - symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(sc_parent_die.GetID()); - if (symbol_context_scope == NULL) - symbol_context_scope = sc.function; - } - - if (symbol_context_scope != NULL) - { - type_sp->SetSymbolContextScope(symbol_context_scope); - } - - // We are ready to put this type into the uniqued list up at the module level - type_list->Insert (type_sp); - - dwarf->m_die_to_type[die.GetDIE()] = type_sp.get(); - } - } - else if (type_ptr != DIE_IS_BEING_PARSED) - { - type_sp = type_ptr->shared_from_this(); - } - } - return type_sp; -} - -clang::DeclContext * -ClangASTContext::GetCachedClangDeclContextForDIE (const DWARFDIE &die) -{ - if (die) - { - DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die.GetDIE()); - if (pos != m_die_to_decl_ctx.end()) - return pos->second; - } - return nullptr; -} - -void -ClangASTContext::LinkDeclContextToDIE (clang::DeclContext *decl_ctx, const DWARFDIE &die) -{ - m_die_to_decl_ctx[die.GetDIE()] = decl_ctx; - // There can be many DIEs for a single decl context - m_decl_ctx_to_die[decl_ctx].insert(die.GetDIE()); -} - -bool -ClangASTContext::CopyUniqueClassMethodTypes (const DWARFDIE &src_class_die, - const DWARFDIE &dst_class_die, - lldb_private::Type *class_type, - DWARFDIECollection &failures) -{ - if (!class_type || !src_class_die || !dst_class_die) - return false; - if (src_class_die.Tag() != dst_class_die.Tag()) - return false; - - // We need to complete the class type so we can get all of the method types - // parsed so we can then unique those types to their equivalent counterparts - // in "dst_cu" and "dst_class_die" - class_type->GetFullCompilerType (); - - DWARFDIE src_die; - DWARFDIE dst_die; - UniqueCStringMap src_name_to_die; - UniqueCStringMap dst_name_to_die; - UniqueCStringMap src_name_to_die_artificial; - UniqueCStringMap dst_name_to_die_artificial; - for (src_die = src_class_die.GetFirstChild(); src_die.IsValid(); src_die = src_die.GetSibling()) - { - if (src_die.Tag() == DW_TAG_subprogram) - { - // Make sure this is a declaration and not a concrete instance by looking - // for DW_AT_declaration set to 1. Sometimes concrete function instances - // are placed inside the class definitions and shouldn't be included in - // the list of things are are tracking here. - if (src_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) - { - const char *src_name = src_die.GetMangledName (); - if (src_name) - { - ConstString src_const_name(src_name); - if (src_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) - src_name_to_die_artificial.Append(src_const_name.GetCString(), src_die); - else - src_name_to_die.Append(src_const_name.GetCString(), src_die); - } - } - } - } - for (dst_die = dst_class_die.GetFirstChild(); dst_die.IsValid(); dst_die = dst_die.GetSibling()) - { - if (dst_die.Tag() == DW_TAG_subprogram) - { - // Make sure this is a declaration and not a concrete instance by looking - // for DW_AT_declaration set to 1. Sometimes concrete function instances - // are placed inside the class definitions and shouldn't be included in - // the list of things are are tracking here. - if (dst_die.GetAttributeValueAsUnsigned(DW_AT_declaration, 0) == 1) - { - const char *dst_name = dst_die.GetMangledName (); - if (dst_name) - { - ConstString dst_const_name(dst_name); - if ( dst_die.GetAttributeValueAsUnsigned(DW_AT_artificial, 0)) - dst_name_to_die_artificial.Append(dst_const_name.GetCString(), dst_die); - else - dst_name_to_die.Append(dst_const_name.GetCString(), dst_die); - } - } - } - } - const uint32_t src_size = src_name_to_die.GetSize (); - const uint32_t dst_size = dst_name_to_die.GetSize (); - Log *log = nullptr; // (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO | DWARF_LOG_TYPE_COMPLETION)); - - // Is everything kosher so we can go through the members at top speed? - bool fast_path = true; - - if (src_size != dst_size) - { - if (src_size != 0 && dst_size != 0) - { - if (log) - log->Printf("warning: trying to unique class DIE 0x%8.8x to 0x%8.8x, but they didn't have the same size (src=%d, dst=%d)", - src_class_die.GetOffset(), - dst_class_die.GetOffset(), - src_size, - dst_size); - } - - fast_path = false; - } - - uint32_t idx; - - if (fast_path) - { - for (idx = 0; idx < src_size; ++idx) - { - src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); - dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); - - if (src_die.Tag() != dst_die.Tag()) - { - if (log) - log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) tags didn't match 0x%8.8x (%s)", - src_class_die.GetOffset(), - dst_class_die.GetOffset(), - src_die.GetOffset(), - src_die.GetTagAsCString(), - dst_die.GetOffset(), - dst_die.GetTagAsCString()); - fast_path = false; - } - - const char *src_name = src_die.GetMangledName (); - const char *dst_name = dst_die.GetMangledName (); - - // Make sure the names match - if (src_name == dst_name || (strcmp (src_name, dst_name) == 0)) - continue; - - if (log) - log->Printf("warning: tried to unique class DIE 0x%8.8x to 0x%8.8x, but 0x%8.8x (%s) names didn't match 0x%8.8x (%s)", - src_class_die.GetOffset(), - dst_class_die.GetOffset(), - src_die.GetOffset(), - src_name, - dst_die.GetOffset(), - dst_name); - - fast_path = false; - } - } - - // Now do the work of linking the DeclContexts and Types. - if (fast_path) - { - // We can do this quickly. Just run across the tables index-for-index since - // we know each node has matching names and tags. - for (idx = 0; idx < src_size; ++idx) - { - src_die = src_name_to_die.GetValueAtIndexUnchecked (idx); - dst_die = dst_name_to_die.GetValueAtIndexUnchecked (idx); - - clang::DeclContext *src_decl_ctx = src_die.GetDWARF()->GetClangASTContext().m_die_to_decl_ctx[src_die.GetDIE()]; - if (src_decl_ctx) - { - if (log) - log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", - static_cast(src_decl_ctx), - src_die.GetOffset(), dst_die.GetOffset()); - dst_die.GetDWARF()->GetClangASTContext().LinkDeclContextToDIE (src_decl_ctx, dst_die); - } - else - { - if (log) - log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", - src_die.GetOffset(), dst_die.GetOffset()); - } - - Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; - if (src_child_type) - { - if (log) - log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", - static_cast(src_child_type), - src_child_type->GetID(), - src_die.GetOffset(), dst_die.GetOffset()); - dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; - } - else - { - if (log) - log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); - } - } - } - else - { - // We must do this slowly. For each member of the destination, look - // up a member in the source with the same name, check its tag, and - // unique them if everything matches up. Report failures. - - if (!src_name_to_die.IsEmpty() && !dst_name_to_die.IsEmpty()) - { - src_name_to_die.Sort(); - - for (idx = 0; idx < dst_size; ++idx) - { - const char *dst_name = dst_name_to_die.GetCStringAtIndex(idx); - dst_die = dst_name_to_die.GetValueAtIndexUnchecked(idx); - src_die = src_name_to_die.Find(dst_name, DWARFDIE()); - - if (src_die && (src_die.Tag() == dst_die.Tag())) - { - clang::DeclContext *src_decl_ctx = src_die.GetDWARF()->GetClangASTContext().m_die_to_decl_ctx[src_die.GetDIE()]; - if (src_decl_ctx) - { - if (log) - log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", - static_cast(src_decl_ctx), - src_die.GetOffset(), - dst_die.GetOffset()); - dst_die.GetDWARF()->GetClangASTContext().LinkDeclContextToDIE (src_decl_ctx, dst_die); - } - else - { - if (log) - log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); - } - - Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; - if (src_child_type) - { - if (log) - log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", - static_cast(src_child_type), - src_child_type->GetID(), - src_die.GetOffset(), - dst_die.GetOffset()); - dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; - } - else - { - if (log) - log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); - } - } - else - { - if (log) - log->Printf ("warning: couldn't find a match for 0x%8.8x", dst_die.GetOffset()); - - failures.Append(dst_die); - } - } - } - } - - const uint32_t src_size_artificial = src_name_to_die_artificial.GetSize (); - const uint32_t dst_size_artificial = dst_name_to_die_artificial.GetSize (); - - if (src_size_artificial && dst_size_artificial) - { - dst_name_to_die_artificial.Sort(); - - for (idx = 0; idx < src_size_artificial; ++idx) - { - const char *src_name_artificial = src_name_to_die_artificial.GetCStringAtIndex(idx); - src_die = src_name_to_die_artificial.GetValueAtIndexUnchecked (idx); - dst_die = dst_name_to_die_artificial.Find(src_name_artificial, DWARFDIE()); - - if (dst_die) - { - // Both classes have the artificial types, link them - clang::DeclContext *src_decl_ctx = dst_die.GetDWARF()->GetClangASTContext().m_die_to_decl_ctx[src_die.GetDIE()]; - if (src_decl_ctx) - { - if (log) - log->Printf ("uniquing decl context %p from 0x%8.8x for 0x%8.8x", - static_cast(src_decl_ctx), - src_die.GetOffset(), dst_die.GetOffset()); - dst_die.GetDWARF()->GetClangASTContext().LinkDeclContextToDIE (src_decl_ctx, dst_die); - } - else - { - if (log) - log->Printf ("warning: tried to unique decl context from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); - } - - Type *src_child_type = dst_die.GetDWARF()->m_die_to_type[src_die.GetDIE()]; - if (src_child_type) - { - if (log) - log->Printf ("uniquing type %p (uid=0x%" PRIx64 ") from 0x%8.8x for 0x%8.8x", - static_cast(src_child_type), - src_child_type->GetID(), - src_die.GetOffset(), dst_die.GetOffset()); - dst_die.GetDWARF()->m_die_to_type[dst_die.GetDIE()] = src_child_type; - } - else - { - if (log) - log->Printf ("warning: tried to unique lldb_private::Type from 0x%8.8x for 0x%8.8x, but none was found", src_die.GetOffset(), dst_die.GetOffset()); - } - } - } - } - - if (dst_size_artificial) - { - for (idx = 0; idx < dst_size_artificial; ++idx) - { - const char *dst_name_artificial = dst_name_to_die_artificial.GetCStringAtIndex(idx); - dst_die = dst_name_to_die_artificial.GetValueAtIndexUnchecked (idx); - if (log) - log->Printf ("warning: need to create artificial method for 0x%8.8x for method '%s'", dst_die.GetOffset(), dst_name_artificial); - - failures.Append(dst_die); - } - } - - return (failures.Size() != 0); -} -