4131 lines
213 KiB
C++
4131 lines
213 KiB
C++
//===-- DWARFASTParserClang.cpp ---------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "DWARFASTParserClang.h"
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#include "DWARFCompileUnit.h"
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#include "DWARFDebugInfo.h"
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#include "DWARFDeclContext.h"
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#include "DWARFDefines.h"
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#include "DWARFDIE.h"
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#include "DWARFDIECollection.h"
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#include "SymbolFileDWARF.h"
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#include "SymbolFileDWARFDebugMap.h"
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#include "UniqueDWARFASTType.h"
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#include "Plugins/Language/ObjC/ObjCLanguage.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/Value.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Symbol/ClangASTImporter.h"
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#include "lldb/Symbol/ClangExternalASTSourceCommon.h"
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#include "lldb/Symbol/ClangUtil.h"
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#include "lldb/Symbol/CompileUnit.h"
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#include "lldb/Symbol/Function.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/SymbolVendor.h"
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#include "lldb/Symbol/TypeList.h"
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#include "lldb/Symbol/TypeMap.h"
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#include "lldb/Target/Language.h"
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#include "lldb/Utility/LLDBAssert.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclObjC.h"
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#include <map>
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#include <vector>
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//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
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#ifdef ENABLE_DEBUG_PRINTF
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#include <stdio.h>
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#define DEBUG_PRINTF(fmt, ...) printf(fmt, __VA_ARGS__)
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#else
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#define DEBUG_PRINTF(fmt, ...)
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#endif
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using namespace lldb;
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using namespace lldb_private;
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DWARFASTParserClang::DWARFASTParserClang (ClangASTContext &ast) :
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m_ast (ast),
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m_die_to_decl_ctx (),
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m_decl_ctx_to_die ()
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{
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}
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DWARFASTParserClang::~DWARFASTParserClang ()
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{
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}
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static AccessType
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DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility)
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{
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switch (dwarf_accessibility)
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{
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case DW_ACCESS_public: return eAccessPublic;
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case DW_ACCESS_private: return eAccessPrivate;
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case DW_ACCESS_protected: return eAccessProtected;
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default: break;
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}
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return eAccessNone;
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}
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static bool
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DeclKindIsCXXClass (clang::Decl::Kind decl_kind)
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{
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switch (decl_kind)
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{
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case clang::Decl::CXXRecord:
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case clang::Decl::ClassTemplateSpecialization:
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return true;
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default:
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break;
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}
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return false;
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}
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struct BitfieldInfo
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{
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uint64_t bit_size;
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uint64_t bit_offset;
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BitfieldInfo () :
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bit_size (LLDB_INVALID_ADDRESS),
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bit_offset (LLDB_INVALID_ADDRESS)
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{
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}
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void
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Clear()
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{
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bit_size = LLDB_INVALID_ADDRESS;
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bit_offset = LLDB_INVALID_ADDRESS;
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}
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bool IsValid ()
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{
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return (bit_size != LLDB_INVALID_ADDRESS) &&
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(bit_offset != LLDB_INVALID_ADDRESS);
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}
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};
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ClangASTImporter &
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DWARFASTParserClang::GetClangASTImporter()
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{
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if (!m_clang_ast_importer_ap)
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{
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m_clang_ast_importer_ap.reset (new ClangASTImporter);
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}
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return *m_clang_ast_importer_ap;
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}
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TypeSP
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DWARFASTParserClang::ParseTypeFromDWO (const DWARFDIE &die, Log *log)
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{
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ModuleSP dwo_module_sp = die.GetContainingDWOModule();
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if (dwo_module_sp)
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{
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// This type comes from an external DWO module
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std::vector<CompilerContext> dwo_context;
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die.GetDWOContext(dwo_context);
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TypeMap dwo_types;
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if (dwo_module_sp->GetSymbolVendor()->FindTypes(dwo_context, true, dwo_types))
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{
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const size_t num_dwo_types = dwo_types.GetSize();
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if (num_dwo_types == 1)
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{
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// We found a real definition for this type elsewhere
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// so lets use it and cache the fact that we found
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// a complete type for this die
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TypeSP dwo_type_sp = dwo_types.GetTypeAtIndex(0);
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if (dwo_type_sp)
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{
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lldb_private::CompilerType dwo_type = dwo_type_sp->GetForwardCompilerType();
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lldb_private::CompilerType type = GetClangASTImporter().CopyType (m_ast, dwo_type);
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//printf ("copied_qual_type: ast = %p, clang_type = %p, name = '%s'\n", m_ast, copied_qual_type.getAsOpaquePtr(), external_type->GetName().GetCString());
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if (type)
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{
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SymbolFileDWARF *dwarf = die.GetDWARF();
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TypeSP type_sp (new Type (die.GetID(),
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dwarf,
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dwo_type_sp->GetName(),
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dwo_type_sp->GetByteSize(),
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NULL,
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LLDB_INVALID_UID,
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Type::eEncodingInvalid,
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&dwo_type_sp->GetDeclaration(),
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type,
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Type::eResolveStateForward));
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dwarf->GetTypeList()->Insert(type_sp);
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dwarf->GetDIEToType()[die.GetDIE()] = type_sp.get();
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clang::TagDecl *tag_decl = ClangASTContext::GetAsTagDecl(type);
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if (tag_decl)
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LinkDeclContextToDIE(tag_decl, die);
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else
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{
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clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(die);
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if (defn_decl_ctx)
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LinkDeclContextToDIE(defn_decl_ctx, die);
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}
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return type_sp;
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}
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}
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}
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}
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}
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return TypeSP();
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}
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TypeSP
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DWARFASTParserClang::ParseTypeFromDWARF (const SymbolContext& sc,
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const DWARFDIE &die,
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Log *log,
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bool *type_is_new_ptr)
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{
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TypeSP type_sp;
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if (type_is_new_ptr)
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*type_is_new_ptr = false;
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AccessType accessibility = eAccessNone;
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if (die)
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{
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SymbolFileDWARF *dwarf = die.GetDWARF();
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if (log)
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{
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DWARFDIE context_die;
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clang::DeclContext *context = GetClangDeclContextContainingDIE (die, &context_die);
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dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
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die.GetOffset(),
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static_cast<void*>(context),
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context_die.GetOffset(),
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die.GetTagAsCString(),
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die.GetName());
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}
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//
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// Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
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// if (log && dwarf_cu)
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// {
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// StreamString s;
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// die->DumpLocation (this, dwarf_cu, s);
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// dwarf->GetObjectFile()->GetModule()->LogMessage (log, "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
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//
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// }
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Type *type_ptr = dwarf->GetDIEToType().lookup (die.GetDIE());
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TypeList* type_list = dwarf->GetTypeList();
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if (type_ptr == NULL)
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{
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if (type_is_new_ptr)
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*type_is_new_ptr = true;
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const dw_tag_t tag = die.Tag();
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bool is_forward_declaration = false;
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DWARFAttributes attributes;
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const char *type_name_cstr = NULL;
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ConstString type_name_const_str;
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Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
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uint64_t byte_size = 0;
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Declaration decl;
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Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
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CompilerType clang_type;
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DWARFFormValue form_value;
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dw_attr_t attr;
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switch (tag)
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{
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case DW_TAG_typedef:
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// Try to parse a typedef from the DWO file first as modules
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// can contain typedef'ed structures that have no names like:
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//
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// typedef struct { int a; } Foo;
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//
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// In this case we will have a structure with no name and a
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// typedef named "Foo" that points to this unnamed structure.
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// The name in the typedef is the only identifier for the struct,
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// so always try to get typedefs from DWO files if possible.
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//
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// The type_sp returned will be empty if the typedef doesn't exist
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// in a DWO file, so it is cheap to call this function just to check.
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//
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// If we don't do this we end up creating a TypeSP that says this
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// is a typedef to type 0x123 (the DW_AT_type value would be 0x123
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// in the DW_TAG_typedef), and this is the unnamed structure type.
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// We will have a hard time tracking down an unnammed structure
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// type in the module DWO file, so we make sure we don't get into
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// this situation by always resolving typedefs from the DWO file.
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type_sp = ParseTypeFromDWO(die, log);
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if (type_sp)
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return type_sp;
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LLVM_FALLTHROUGH;
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case DW_TAG_base_type:
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case DW_TAG_pointer_type:
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case DW_TAG_reference_type:
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case DW_TAG_rvalue_reference_type:
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case DW_TAG_const_type:
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case DW_TAG_restrict_type:
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case DW_TAG_volatile_type:
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case DW_TAG_unspecified_type:
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{
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// Set a bit that lets us know that we are currently parsing this
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dwarf->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED;
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const size_t num_attributes = die.GetAttributes (attributes);
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uint32_t encoding = 0;
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DWARFFormValue encoding_uid;
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if (num_attributes > 0)
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{
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uint32_t i;
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for (i=0; i<num_attributes; ++i)
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{
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attr = attributes.AttributeAtIndex(i);
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if (attributes.ExtractFormValueAtIndex(i, form_value))
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{
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switch (attr)
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{
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case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break;
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case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break;
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case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break;
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case DW_AT_name:
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type_name_cstr = form_value.AsCString();
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// Work around a bug in llvm-gcc where they give a name to a reference type which doesn't
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// include the "&"...
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if (tag == DW_TAG_reference_type)
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{
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if (strchr (type_name_cstr, '&') == NULL)
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type_name_cstr = NULL;
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}
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if (type_name_cstr)
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type_name_const_str.SetCString(type_name_cstr);
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break;
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case DW_AT_byte_size: byte_size = form_value.Unsigned(); break;
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case DW_AT_encoding: encoding = form_value.Unsigned(); break;
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case DW_AT_type: encoding_uid = form_value; break;
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default:
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case DW_AT_sibling:
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break;
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}
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}
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}
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}
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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.Reference());
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switch (tag)
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{
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default:
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break;
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case DW_TAG_unspecified_type:
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if (strcmp(type_name_cstr, "nullptr_t") == 0 ||
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strcmp(type_name_cstr, "decltype(nullptr)") == 0 )
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{
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resolve_state = Type::eResolveStateFull;
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clang_type = m_ast.GetBasicType(eBasicTypeNullPtr);
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break;
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}
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// Fall through to base type below in case we can handle the type there...
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LLVM_FALLTHROUGH;
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case DW_TAG_base_type:
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resolve_state = Type::eResolveStateFull;
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clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr,
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encoding,
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byte_size * 8);
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break;
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case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break;
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case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break;
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case DW_TAG_rvalue_reference_type: encoding_data_type = Type::eEncodingIsRValueReferenceUID; break;
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case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break;
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case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break;
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case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break;
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case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break;
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}
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if (!clang_type && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID) && sc.comp_unit != NULL)
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{
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if (tag == DW_TAG_pointer_type)
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{
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DWARFDIE target_die = die.GetReferencedDIE(DW_AT_type);
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if (target_die.GetAttributeValueAsUnsigned(DW_AT_APPLE_block, 0))
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{
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// Blocks have a __FuncPtr inside them which is a pointer to a function of the proper type.
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for (DWARFDIE child_die = target_die.GetFirstChild();
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child_die.IsValid();
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child_die = child_die.GetSibling())
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{
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if (!strcmp(child_die.GetAttributeValueAsString(DW_AT_name, ""), "__FuncPtr"))
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{
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DWARFDIE function_pointer_type = child_die.GetReferencedDIE(DW_AT_type);
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if (function_pointer_type)
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{
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DWARFDIE function_type = function_pointer_type.GetReferencedDIE(DW_AT_type);
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bool function_type_is_new_pointer;
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TypeSP lldb_function_type_sp = ParseTypeFromDWARF(sc, function_type, log, &function_type_is_new_pointer);
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if (lldb_function_type_sp)
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{
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clang_type = m_ast.CreateBlockPointerType(lldb_function_type_sp->GetForwardCompilerType());
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encoding_data_type = Type::eEncodingIsUID;
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encoding_uid.Clear();
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resolve_state = Type::eResolveStateFull;
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}
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}
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break;
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}
|
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}
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}
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}
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bool translation_unit_is_objc = (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus);
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if (translation_unit_is_objc)
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{
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if (type_name_cstr != NULL)
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{
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static ConstString g_objc_type_name_id("id");
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static ConstString g_objc_type_name_Class("Class");
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static ConstString g_objc_type_name_selector("SEL");
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if (type_name_const_str == g_objc_type_name_id)
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{
|
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if (log)
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dwarf->GetObjectFile()->GetModule()->LogMessage (log,
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"SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.",
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die.GetOffset(),
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die.GetTagAsCString(),
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die.GetName());
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clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
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encoding_data_type = Type::eEncodingIsUID;
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encoding_uid.Clear();
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resolve_state = Type::eResolveStateFull;
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}
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else if (type_name_const_str == g_objc_type_name_Class)
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{
|
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if (log)
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dwarf->GetObjectFile()->GetModule()->LogMessage (log,
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"SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.",
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die.GetOffset(),
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die.GetTagAsCString(),
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die.GetName());
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clang_type = m_ast.GetBasicType(eBasicTypeObjCClass);
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encoding_data_type = Type::eEncodingIsUID;
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encoding_uid.Clear();
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resolve_state = Type::eResolveStateFull;
|
|
}
|
|
else if (type_name_const_str == g_objc_type_name_selector)
|
|
{
|
|
if (log)
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|
dwarf->GetObjectFile()->GetModule()->LogMessage (log,
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"SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.",
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die.GetOffset(),
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die.GetTagAsCString(),
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die.GetName());
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clang_type = m_ast.GetBasicType(eBasicTypeObjCSel);
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encoding_data_type = Type::eEncodingIsUID;
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encoding_uid.Clear();
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resolve_state = Type::eResolveStateFull;
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}
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}
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else if (encoding_data_type == Type::eEncodingIsPointerUID && encoding_uid.IsValid())
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{
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// Clang sometimes erroneously emits id as objc_object*. In that case we fix up the type to "id".
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const DWARFDIE encoding_die = dwarf->GetDIE(DIERef(encoding_uid));
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|
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if (encoding_die && encoding_die.Tag() == DW_TAG_structure_type)
|
|
{
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|
if (const char *struct_name = encoding_die.GetName())
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|
{
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|
if (!strcmp(struct_name, "objc_object"))
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|
{
|
|
if (log)
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|
dwarf->GetObjectFile()->GetModule()->LogMessage (log,
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|
"SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is 'objc_object*', which we overrode to 'id'.",
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die.GetOffset(),
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die.GetTagAsCString(),
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die.GetName());
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|
clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
|
|
encoding_data_type = Type::eEncodingIsUID;
|
|
encoding_uid.Clear();
|
|
resolve_state = Type::eResolveStateFull;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
type_sp.reset( new Type (die.GetID(),
|
|
dwarf,
|
|
type_name_const_str,
|
|
byte_size,
|
|
NULL,
|
|
DIERef(encoding_uid).GetUID(dwarf),
|
|
encoding_data_type,
|
|
&decl,
|
|
clang_type,
|
|
resolve_state));
|
|
|
|
dwarf->GetDIEToType()[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->GetDIEToType()[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; i<num_attributes; ++i)
|
|
{
|
|
attr = attributes.AttributeAtIndex(i);
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_decl_file:
|
|
if (die.GetCU()->DW_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 ("<invalid>", 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<UniqueDWARFASTType> unique_ast_entry_ap(new UniqueDWARFASTType());
|
|
|
|
ConstString unique_typename(type_name_const_str);
|
|
Declaration unique_decl(decl);
|
|
|
|
if (type_name_const_str)
|
|
{
|
|
LanguageType die_language = die.GetLanguage();
|
|
if (Language::LanguageIsCPlusPlus(die_language))
|
|
{
|
|
// For C++, we rely solely upon the one definition rule that says only
|
|
// one thing can exist at a given decl context. We ignore the file and
|
|
// line that things are declared on.
|
|
std::string qualified_name;
|
|
if (die.GetQualifiedName(qualified_name))
|
|
unique_typename = ConstString(qualified_name);
|
|
unique_decl.Clear();
|
|
}
|
|
|
|
if (dwarf->GetUniqueDWARFASTTypeMap().Find(unique_typename, die, unique_decl,
|
|
byte_size_valid ? byte_size : -1,
|
|
*unique_ast_entry_ap))
|
|
{
|
|
type_sp = unique_ast_entry_ap->m_type_sp;
|
|
if (type_sp)
|
|
{
|
|
dwarf->GetDIEToType()[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<void*>(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->GetDIEToType()[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<void*>(this),
|
|
die.GetOffset(),
|
|
DW_TAG_value_to_name(tag),
|
|
type_name_cstr);
|
|
}
|
|
|
|
// See if the type comes from a DWO module and if so, track down that type.
|
|
type_sp = ParseTypeFromDWO(die, log);
|
|
if (type_sp)
|
|
return type_sp;
|
|
|
|
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<void*>(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->GetDIEToType()[die.GetDIE()] = type_sp.get();
|
|
clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(
|
|
dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf)));
|
|
if (defn_decl_ctx)
|
|
LinkDeclContextToDIE(defn_decl_ctx, die);
|
|
return type_sp;
|
|
}
|
|
}
|
|
assert (tag_decl_kind != -1);
|
|
bool clang_type_was_created = false;
|
|
clang_type.SetCompilerType(&m_ast, dwarf->GetForwardDeclDieToClangType().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 = unique_decl;
|
|
unique_ast_entry_ap->m_byte_size = byte_size;
|
|
dwarf->GetUniqueDWARFASTTypeMap().Insert (unique_typename,
|
|
*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)
|
|
{
|
|
GetClangASTImporter().InsertRecordDecl(record_decl, ClangASTImporter::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.
|
|
assert(!dwarf->GetForwardDeclClangTypeToDie().count(
|
|
ClangUtil::RemoveFastQualifiers(clang_type).GetOpaqueQualType()) &&
|
|
"Type already in the forward declaration map!");
|
|
// Can't assume m_ast.GetSymbolFile() is actually a SymbolFileDWARF, it can be a
|
|
// SymbolFileDWARFDebugMap for Apple binaries.
|
|
dwarf->GetForwardDeclDieToClangType()[die.GetDIE()] = clang_type.GetOpaqueQualType();
|
|
dwarf->GetForwardDeclClangTypeToDie()[ClangUtil::RemoveFastQualifiers(clang_type)
|
|
.GetOpaqueQualType()] = die.GetDIERef();
|
|
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->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED;
|
|
|
|
DWARFFormValue encoding_form;
|
|
|
|
const size_t num_attributes = die.GetAttributes (attributes);
|
|
if (num_attributes > 0)
|
|
{
|
|
uint32_t i;
|
|
|
|
for (i=0; i<num_attributes; ++i)
|
|
{
|
|
attr = attributes.AttributeAtIndex(i);
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_decl_file: 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_type: encoding_form = form_value; 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: 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (is_forward_declaration)
|
|
{
|
|
type_sp = ParseTypeFromDWO(die, log);
|
|
if (type_sp)
|
|
return type_sp;
|
|
|
|
DWARFDeclContext die_decl_ctx;
|
|
die.GetDWARFDeclContext(die_decl_ctx);
|
|
|
|
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<void*>(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->GetDIEToType()[die.GetDIE()] = type_sp.get();
|
|
clang::DeclContext *defn_decl_ctx = GetCachedClangDeclContextForDIE(dwarf->DebugInfo()->GetDIE(DIERef(type_sp->GetID(), dwarf)));
|
|
if (defn_decl_ctx)
|
|
LinkDeclContextToDIE(defn_decl_ctx, die);
|
|
return type_sp;
|
|
}
|
|
|
|
}
|
|
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->GetForwardDeclDieToClangType().lookup (die.GetDIE()));
|
|
if (!clang_type)
|
|
{
|
|
if (encoding_form.IsValid())
|
|
{
|
|
Type *enumerator_type = dwarf->ResolveTypeUID(DIERef(encoding_form));
|
|
if (enumerator_type)
|
|
enumerator_clang_type = enumerator_type->GetFullCompilerType ();
|
|
}
|
|
|
|
if (!enumerator_clang_type)
|
|
{
|
|
if (byte_size > 0)
|
|
{
|
|
enumerator_clang_type = m_ast.GetBuiltinTypeForDWARFEncodingAndBitSize(NULL,
|
|
DW_ATE_signed,
|
|
byte_size * 8);
|
|
}
|
|
else
|
|
{
|
|
enumerator_clang_type = m_ast.GetBasicType(eBasicTypeInt);
|
|
}
|
|
}
|
|
|
|
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,
|
|
DIERef(encoding_form).GetUID(dwarf),
|
|
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->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED;
|
|
|
|
DWARFFormValue type_die_form;
|
|
bool is_variadic = false;
|
|
bool is_inline = false;
|
|
bool is_static = false;
|
|
bool is_virtual = false;
|
|
bool is_explicit = false;
|
|
bool is_artificial = false;
|
|
bool has_template_params = false;
|
|
DWARFFormValue specification_die_form;
|
|
DWARFFormValue abstract_origin_die_form;
|
|
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; i<num_attributes; ++i)
|
|
{
|
|
attr = attributes.AttributeAtIndex(i);
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_decl_file: 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_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_form = form_value; 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_form = form_value;
|
|
break;
|
|
|
|
case DW_AT_abstract_origin:
|
|
abstract_origin_die_form = form_value;
|
|
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_form.IsValid())
|
|
func_type = dwarf->ResolveTypeUID(DIERef(type_die_form));
|
|
|
|
if (func_type)
|
|
return_clang_type = func_type->GetForwardCompilerType ();
|
|
else
|
|
return_clang_type = m_ast.GetBasicType(eBasicTypeVoid);
|
|
|
|
|
|
std::vector<CompilerType> function_param_types;
|
|
std::vector<clang::ParmVarDecl*> 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();
|
|
|
|
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,
|
|
has_template_params,
|
|
function_param_types,
|
|
function_param_decls,
|
|
type_quals);
|
|
}
|
|
|
|
bool ignore_containing_context = false;
|
|
// Check for templatized class member functions. If we had any DW_TAG_template_type_parameter
|
|
// or DW_TAG_template_value_parameter the DW_TAG_subprogram DIE, then we can't let this become
|
|
// a method in a class. Why? Because templatized functions are only emitted if one of the
|
|
// templatized methods is used in the current compile unit and we will end up with classes
|
|
// that may or may not include these member functions and this means one class won't match another
|
|
// class definition and it affects our ability to use a class in the clang expression parser. So
|
|
// for the greater good, we currently must not allow any template member functions in a class definition.
|
|
if (is_cxx_method && has_template_params)
|
|
{
|
|
ignore_containing_context = true;
|
|
is_cxx_method = false;
|
|
}
|
|
|
|
// 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);
|
|
|
|
|
|
if (type_name_cstr)
|
|
{
|
|
bool type_handled = false;
|
|
if (tag == DW_TAG_subprogram ||
|
|
tag == DW_TAG_inlined_subroutine)
|
|
{
|
|
ObjCLanguage::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)
|
|
{
|
|
bool alternate_defn = false;
|
|
if (class_type->GetID() != decl_ctx_die.GetID() || decl_ctx_die.GetContainingDWOModuleDIE())
|
|
{
|
|
alternate_defn = true;
|
|
|
|
// 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 (DIERef(class_type->GetID(), dwarf));
|
|
}
|
|
else
|
|
{
|
|
class_symfile = dwarf;
|
|
class_type_die = dwarf->DebugInfo()->GetDIE (DIERef(class_type->GetID(), dwarf));
|
|
}
|
|
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->GetDIEToType()[die.GetDIE()];
|
|
if (type_ptr && type_ptr != DIE_IS_BEING_PARSED)
|
|
{
|
|
type_sp = type_ptr->shared_from_this();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (specification_die_form.IsValid())
|
|
{
|
|
// 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(DIERef(specification_die_form));
|
|
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%8.8" PRIx64 ") has no decl\n",
|
|
die.GetID(),
|
|
specification_die_form.Reference());
|
|
}
|
|
type_handled = true;
|
|
}
|
|
else if (abstract_origin_die_form.IsValid())
|
|
{
|
|
// 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 (DIERef(abstract_origin_die_form));
|
|
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%8.8" PRIx64 ") has no decl\n",
|
|
die.GetID(),
|
|
abstract_origin_die_form.Reference());
|
|
}
|
|
type_handled = true;
|
|
}
|
|
else
|
|
{
|
|
CompilerType class_opaque_type = class_type->GetForwardCompilerType ();
|
|
if (ClangASTContext::IsCXXClassType(class_opaque_type))
|
|
{
|
|
if (class_opaque_type.IsBeingDefined () || alternate_defn)
|
|
{
|
|
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
|
|
{
|
|
bool add_method = true;
|
|
if (alternate_defn)
|
|
{
|
|
// If an alternate definition for the class exists, then add the method only if an
|
|
// equivalent is not already present.
|
|
clang::CXXRecordDecl *record_decl = m_ast.GetAsCXXRecordDecl(class_opaque_type.GetOpaqueQualType());
|
|
if (record_decl)
|
|
{
|
|
for (auto method_iter = record_decl->method_begin();
|
|
method_iter != record_decl->method_end();
|
|
method_iter++)
|
|
{
|
|
clang::CXXMethodDecl *method_decl = *method_iter;
|
|
if (method_decl->getNameInfo().getAsString() == std::string(type_name_cstr))
|
|
{
|
|
if (method_decl->getType() ==
|
|
ClangUtil::GetQualType(clang_type))
|
|
{
|
|
add_method = false;
|
|
LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(method_decl), die);
|
|
type_handled = true;
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (add_method)
|
|
{
|
|
// 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;
|
|
// 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;
|
|
|
|
clang::CXXMethodDecl *cxx_method_decl;
|
|
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<void*>(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->GetDIEToType() map. First
|
|
// we need to modify the dwarf->GetDIEToType() so it doesn't think we are
|
|
// trying to parse this DIE anymore...
|
|
dwarf->GetDIEToType()[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->GetDIEToType()[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.
|
|
// <rdar://problem/11240464>
|
|
type_handled = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!type_handled)
|
|
{
|
|
clang::FunctionDecl *function_decl = nullptr;
|
|
|
|
if (abstract_origin_die_form.IsValid())
|
|
{
|
|
DWARFDIE abs_die = dwarf->DebugInfo()->GetDIE (DIERef(abstract_origin_die_form));
|
|
|
|
SymbolContext sc;
|
|
|
|
if (dwarf->ResolveType (abs_die))
|
|
{
|
|
function_decl = llvm::dyn_cast_or_null<clang::FunctionDecl>(GetCachedClangDeclContextForDIE(abs_die));
|
|
|
|
if (function_decl)
|
|
{
|
|
LinkDeclContextToDIE(function_decl, die);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!function_decl)
|
|
{
|
|
// We just have a function that isn't part of a class
|
|
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
|
|
|
|
lldbassert (function_decl);
|
|
|
|
if (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<void*>(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->GetDIEToType()[die.GetDIE()] = DIE_IS_BEING_PARSED;
|
|
|
|
DWARFFormValue type_die_form;
|
|
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; i<num_attributes; ++i)
|
|
{
|
|
attr = attributes.AttributeAtIndex(i);
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_decl_file: 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_type: type_die_form = form_value; 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);
|
|
|
|
DIERef type_die_ref(type_die_form);
|
|
Type *element_type = dwarf->ResolveTypeUID(type_die_ref);
|
|
|
|
if (element_type)
|
|
{
|
|
std::vector<uint64_t> 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 ();
|
|
|
|
if (ClangASTContext::IsCXXClassType(array_element_type) && array_element_type.GetCompleteType() == false)
|
|
{
|
|
ModuleSP module_sp = die.GetModule();
|
|
if (module_sp)
|
|
{
|
|
if (die.GetCU()->GetProducer() == DWARFCompileUnit::eProducerClang)
|
|
module_sp->ReportError ("DWARF DW_TAG_array_type DIE at 0x%8.8x has a class/union/struct element type DIE 0x%8.8x that is a forward declaration, not a complete definition.\nTry compiling the source file with -fno-limit-debug-info or disable -gmodule",
|
|
die.GetOffset(),
|
|
type_die_ref.die_offset);
|
|
else
|
|
module_sp->ReportError ("DWARF DW_TAG_array_type DIE at 0x%8.8x has a class/union/struct element type DIE 0x%8.8x 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(),
|
|
type_die_ref.die_offset,
|
|
die.GetLLDBCompileUnit() ? die.GetLLDBCompileUnit()->GetPath().c_str() : "the source file");
|
|
}
|
|
|
|
// We have no choice other than to pretend that the element class type
|
|
// is complete. If we don't do this, clang will crash when trying
|
|
// to layout the class. 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(array_element_type);
|
|
ClangASTContext::CompleteTagDeclarationDefinition(array_element_type);
|
|
}
|
|
|
|
uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
|
|
if (element_orders.size() > 0)
|
|
{
|
|
uint64_t num_elements = 0;
|
|
std::vector<uint64_t>::const_reverse_iterator pos;
|
|
std::vector<uint64_t>::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,
|
|
DIERef(type_die_form).GetUID(dwarf),
|
|
Type::eEncodingIsUID,
|
|
&decl,
|
|
clang_type,
|
|
Type::eResolveStateFull));
|
|
type_sp->SetEncodingType (element_type);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case DW_TAG_ptr_to_member_type:
|
|
{
|
|
DWARFFormValue type_die_form;
|
|
DWARFFormValue containing_type_die_form;
|
|
|
|
const size_t num_attributes = die.GetAttributes (attributes);
|
|
|
|
if (num_attributes > 0) {
|
|
uint32_t i;
|
|
for (i=0; i<num_attributes; ++i)
|
|
{
|
|
attr = attributes.AttributeAtIndex(i);
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_type:
|
|
type_die_form = form_value; break;
|
|
case DW_AT_containing_type:
|
|
containing_type_die_form = form_value; break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Type *pointee_type = dwarf->ResolveTypeUID(DIERef(type_die_form));
|
|
Type *class_type = dwarf->ResolveTypeUID(DIERef(containing_type_die_form));
|
|
|
|
CompilerType pointee_clang_type = pointee_type->GetForwardCompilerType ();
|
|
CompilerType class_clang_type = class_type->GetLayoutCompilerType ();
|
|
|
|
clang_type = ClangASTContext::CreateMemberPointerType(class_clang_type, pointee_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->GetDIEToType()[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()
|
|
{
|
|
return ClangASTContext::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<ClangASTMetadata> 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; i<num_attributes; ++i)
|
|
{
|
|
const dw_attr_t attr = attributes.AttributeAtIndex(i);
|
|
|
|
switch (attr)
|
|
{
|
|
case DW_AT_name:
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
name = form_value.AsCString();
|
|
break;
|
|
|
|
case DW_AT_type:
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
lldb_type = die.ResolveTypeUID(DIERef(form_value));
|
|
if (lldb_type)
|
|
clang_type = lldb_type->GetForwardCompilerType ();
|
|
}
|
|
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), ClangUtil::GetQualType(clang_type)));
|
|
}
|
|
else
|
|
{
|
|
template_param_infos.args.push_back(
|
|
clang::TemplateArgument(ClangUtil::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)
|
|
{
|
|
SymbolFileDWARF *dwarf = die.GetDWARF();
|
|
|
|
lldb_private::Mutex::Locker locker(dwarf->GetObjectFile()->GetModule()->GetMutex());
|
|
|
|
// 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();
|
|
|
|
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:
|
|
{
|
|
ClangASTImporter::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<clang::CXXBaseSpecifier *> base_classes;
|
|
std::vector<int> 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; i<num_functions; ++i)
|
|
{
|
|
dwarf->ResolveType(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; i<num_matches; ++i)
|
|
{
|
|
const DIERef& die_ref = method_die_offsets[i];
|
|
DWARFDIE method_die = debug_info->GetDIE (die_ref);
|
|
|
|
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(ClangUtil::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()
|
|
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)
|
|
{
|
|
auto module = dwarf->GetObjectFile()->GetModule();
|
|
module->ReportError (
|
|
":: Class '%s' has a base class '%s' which does not have a complete definition.",
|
|
die.GetName(),
|
|
base_class_type.GetTypeName().GetCString());
|
|
if (die.GetCU()->GetProducer() == DWARFCompileUnit::eProducerClang)
|
|
module->ReportError (":: Try compiling the source file with -fno-limit-debug-info.");
|
|
|
|
// 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<void*>(clang_type.GetOpaqueQualType()),
|
|
static_cast<void*>(record_decl),
|
|
layout_info.bit_size,
|
|
layout_info.alignment,
|
|
static_cast<uint32_t>(layout_info.field_offsets.size()),
|
|
static_cast<uint32_t>(layout_info.base_offsets.size()),
|
|
static_cast<uint32_t>(layout_info.vbase_offsets.size()));
|
|
|
|
uint32_t idx;
|
|
{
|
|
llvm::DenseMap<const clang::FieldDecl *, uint64_t>::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<void *>(clang_type.GetOpaqueQualType()),
|
|
idx,
|
|
static_cast<uint32_t>(pos->second),
|
|
pos->first->getNameAsString().c_str());
|
|
}
|
|
}
|
|
|
|
{
|
|
llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>::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 clang::CXXRecordDecl *, clang::CharUnits>::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<void *>(clang_type.GetOpaqueQualType()), idx,
|
|
static_cast<uint32_t>(vbase_pos->second.getQuantity()),
|
|
vbase_pos->first->getNameAsString().c_str());
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
GetClangASTImporter().InsertRecordDecl(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;
|
|
}
|
|
|
|
std::vector<DWARFDIE>
|
|
DWARFASTParserClang::GetDIEForDeclContext(lldb_private::CompilerDeclContext decl_context)
|
|
{
|
|
std::vector<DWARFDIE> result;
|
|
for (auto it = m_decl_ctx_to_die.find((clang::DeclContext *)decl_context.GetOpaqueDeclContext()); it != m_decl_ctx_to_die.end(); it++)
|
|
result.push_back(it->second);
|
|
return result;
|
|
}
|
|
|
|
CompilerDecl
|
|
DWARFASTParserClang::GetDeclForUIDFromDWARF (const DWARFDIE &die)
|
|
{
|
|
clang::Decl *clang_decl = GetClangDeclForDIE(die);
|
|
if (clang_decl != nullptr)
|
|
return CompilerDecl(&m_ast, clang_decl);
|
|
return CompilerDecl();
|
|
}
|
|
|
|
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; i<num_child_attributes; ++i)
|
|
{
|
|
const dw_attr_t attr = attributes.AttributeAtIndex(i);
|
|
DWARFFormValue form_value;
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_const_value:
|
|
got_value = true;
|
|
if (is_signed)
|
|
enum_value = form_value.Signed();
|
|
else
|
|
enum_value = form_value.Unsigned();
|
|
break;
|
|
|
|
case DW_AT_name:
|
|
name = form_value.AsCString();
|
|
break;
|
|
|
|
case DW_AT_description:
|
|
default:
|
|
case DW_AT_decl_file: 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_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; i<n; i++)
|
|
{
|
|
std::string qualified_name;
|
|
const DWARFDIE &die = m_dies[i];
|
|
die.GetQualifiedName(qualified_name);
|
|
log_strm.Printf ("[%" PRIu64 "] 0x%8.8x: %s name='%s'\n",
|
|
(uint64_t)i,
|
|
die.GetOffset(),
|
|
die.GetTagAsCString(),
|
|
qualified_name.c_str());
|
|
}
|
|
log->PutCString(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<DWARFDIE> 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 &&
|
|
Language::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;
|
|
bool has_template_params = false;
|
|
unsigned type_quals = 0;
|
|
std::vector<CompilerType> param_types;
|
|
std::vector<clang::ParmVarDecl*> 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,
|
|
has_template_params,
|
|
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<Declaration> 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->GetDIEToType().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;
|
|
}
|
|
|
|
bool
|
|
DWARFASTParserClang::ParseChildMembers(const SymbolContext &sc, const DWARFDIE &parent_die,
|
|
CompilerType &class_clang_type, const LanguageType class_language,
|
|
std::vector<clang::CXXBaseSpecifier *> &base_classes,
|
|
std::vector<int> &member_accessibilities,
|
|
DWARFDIECollection &member_function_dies,
|
|
DelayedPropertyList &delayed_properties, AccessType &default_accessibility,
|
|
bool &is_a_class, ClangASTImporter::LayoutInfo &layout_info)
|
|
{
|
|
if (!parent_die)
|
|
return 0;
|
|
|
|
// Get the parent byte size so we can verify any members will fit
|
|
const uint64_t parent_byte_size = parent_die.GetAttributeValueAsUnsigned(DW_AT_byte_size, UINT64_MAX) * 8;
|
|
const uint64_t parent_bit_size = parent_byte_size == UINT64_MAX ? UINT64_MAX : parent_byte_size * 8;
|
|
|
|
uint32_t member_idx = 0;
|
|
BitfieldInfo last_field_info;
|
|
|
|
ModuleSP module_sp = parent_die.GetDWARF()->GetObjectFile()->GetModule();
|
|
ClangASTContext *ast = llvm::dyn_cast_or_null<ClangASTContext>(class_clang_type.GetTypeSystem());
|
|
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;
|
|
DWARFFormValue encoding_form;
|
|
AccessType accessibility = eAccessNone;
|
|
uint32_t member_byte_offset = (parent_die.Tag() == DW_TAG_union_type) ? 0 : UINT32_MAX;
|
|
size_t byte_size = 0;
|
|
int64_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; i<num_attributes && !is_artificial; ++i)
|
|
{
|
|
const dw_attr_t attr = attributes.AttributeAtIndex(i);
|
|
DWARFFormValue form_value;
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_decl_file: 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: name = form_value.AsCString(); break;
|
|
case DW_AT_type: encoding_form = form_value; break;
|
|
case DW_AT_bit_offset: bit_offset = form_value.Signed(); 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(nullptr, // ExecutionContext *
|
|
nullptr, // ClangExpressionVariableList *
|
|
nullptr, // ClangExpressionDeclMap *
|
|
nullptr, // RegisterContext *
|
|
module_sp,
|
|
debug_info_data,
|
|
die.GetCU(),
|
|
block_offset,
|
|
block_length,
|
|
eRegisterKindDWARF,
|
|
&initialValue,
|
|
nullptr,
|
|
memberOffset,
|
|
nullptr))
|
|
{
|
|
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] == '-')
|
|
{
|
|
ObjCLanguage::MethodName prop_getter_method(prop_getter_name, true);
|
|
prop_getter_name = prop_getter_method.GetSelector().GetCString();
|
|
}
|
|
|
|
if (prop_setter_name && prop_setter_name[0] == '-')
|
|
{
|
|
ObjCLanguage::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 (byte_size == 0 && bit_offset < 0)
|
|
{
|
|
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(DIERef(encoding_form));
|
|
|
|
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(DIERef(encoding_form));
|
|
|
|
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();
|
|
|
|
ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
|
|
if (objfile->GetByteOrder() == eByteOrderLittle)
|
|
{
|
|
this_field_info.bit_offset += byte_size * 8;
|
|
this_field_info.bit_offset -= (bit_offset + bit_size);
|
|
|
|
if (this_field_info.bit_offset >= parent_bit_size)
|
|
{
|
|
objfile->GetModule()->ReportWarning("0x%8.8" PRIx64 ": %s bitfield named \"%s\" has invalid bit offset (0x%8.8" PRIx64 ") member will be ignored. Please file a bug against the compiler and include the preprocessed output for %s\n",
|
|
die.GetID(),
|
|
DW_TAG_value_to_name(tag),
|
|
name,
|
|
this_field_info.bit_offset,
|
|
sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file");
|
|
this_field_info.Clear();
|
|
continue;
|
|
}
|
|
}
|
|
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 ();
|
|
if (!member_clang_type.IsCompleteType())
|
|
member_clang_type.GetCompleteType();
|
|
|
|
{
|
|
// Older versions of clang emit array[0] and array[1] in the same way (<rdar://problem/12566646>).
|
|
// 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 && (member_array_size != 0 || member_byte_offset > parent_byte_size))
|
|
{
|
|
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_form.Reference(),
|
|
parent_die.GetID());
|
|
}
|
|
|
|
member_clang_type = m_ast.CreateArrayType(member_array_element_type, 0, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ClangASTContext::IsCXXClassType(member_clang_type) && member_clang_type.GetCompleteType() == false)
|
|
{
|
|
if (die.GetCU()->GetProducer() == DWARFCompileUnit::eProducerClang)
|
|
module_sp->ReportError ("DWARF DIE at 0x%8.8x (class %s) has a member variable 0x%8.8x (%s) whose type is a forward declaration, not a complete definition.\nTry compiling the source file with -fno-limit-debug-info",
|
|
parent_die.GetOffset(),
|
|
parent_die.GetName(),
|
|
die.GetOffset(),
|
|
name);
|
|
else
|
|
module_sp->ReportError ("DWARF DIE at 0x%8.8x (class %s) has a member variable 0x%8.8x (%s) whose type is a forward declaration, not a complete definition.\nPlease file a bug against the compiler and include the preprocessed output for %s",
|
|
parent_die.GetOffset(),
|
|
parent_die.GetName(),
|
|
die.GetOffset(),
|
|
name,
|
|
sc.comp_unit ? sc.comp_unit->GetPath().c_str() : "the source file");
|
|
// We have no choice other than to pretend that the member class
|
|
// is complete. If we don't do this, clang will crash when trying
|
|
// to layout the class. 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(member_clang_type);
|
|
ClangASTContext::CompleteTagDeclarationDefinition(member_clang_type);
|
|
}
|
|
|
|
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_form.Reference());
|
|
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_form.Reference());
|
|
}
|
|
}
|
|
|
|
if (prop_name != NULL && member_type)
|
|
{
|
|
clang::ObjCIvarDecl *ivar_decl = NULL;
|
|
|
|
if (field_decl)
|
|
{
|
|
ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(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());
|
|
DWARFFormValue encoding_form;
|
|
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; i<num_attributes; ++i)
|
|
{
|
|
const dw_attr_t attr = attributes.AttributeAtIndex(i);
|
|
DWARFFormValue form_value;
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_decl_file: 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_type: encoding_form = form_value; 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 (nullptr,
|
|
nullptr,
|
|
nullptr,
|
|
nullptr,
|
|
module_sp,
|
|
debug_info_data,
|
|
die.GetCU(),
|
|
block_offset,
|
|
block_length,
|
|
eRegisterKindDWARF,
|
|
&initialValue,
|
|
nullptr,
|
|
memberOffset,
|
|
nullptr))
|
|
{
|
|
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(DIERef(encoding_form));
|
|
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_form.Reference(),
|
|
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 true;
|
|
}
|
|
|
|
|
|
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,
|
|
bool &has_template_params,
|
|
std::vector<CompilerType>& function_param_types,
|
|
std::vector<clang::ParmVarDecl*>& 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;
|
|
DWARFFormValue param_type_die_form;
|
|
bool is_artificial = false;
|
|
// one of None, Auto, Register, Extern, Static, PrivateExtern
|
|
|
|
clang::StorageClass storage = clang::SC_None;
|
|
uint32_t i;
|
|
for (i=0; i<num_attributes; ++i)
|
|
{
|
|
const dw_attr_t attr = attributes.AttributeAtIndex(i);
|
|
DWARFFormValue form_value;
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_decl_file: 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: name = form_value.AsCString();
|
|
break;
|
|
case DW_AT_type: param_type_die_form = form_value; 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 (DIERef(param_type_die_form));
|
|
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(DIERef(param_type_die_form));
|
|
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);
|
|
has_template_params = true;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return arg_idx;
|
|
}
|
|
|
|
void
|
|
DWARFASTParserClang::ParseChildArrayInfo (const SymbolContext& sc,
|
|
const DWARFDIE &parent_die,
|
|
int64_t& first_index,
|
|
std::vector<uint64_t>& 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<num_child_attributes; ++i)
|
|
{
|
|
const dw_attr_t attr = attributes.AttributeAtIndex(i);
|
|
DWARFFormValue form_value;
|
|
if (attributes.ExtractFormValueAtIndex(i, form_value))
|
|
{
|
|
switch (attr)
|
|
{
|
|
case DW_AT_name:
|
|
break;
|
|
|
|
case DW_AT_count:
|
|
num_elements = form_value.Unsigned();
|
|
break;
|
|
|
|
case DW_AT_bit_stride:
|
|
bit_stride = form_value.Unsigned();
|
|
break;
|
|
|
|
case DW_AT_byte_stride:
|
|
byte_stride = form_value.Unsigned();
|
|
break;
|
|
|
|
case DW_AT_lower_bound:
|
|
lower_bound = form_value.Unsigned();
|
|
break;
|
|
|
|
case DW_AT_upper_bound:
|
|
upper_bound_valid = true;
|
|
upper_bound = form_value.Unsigned();
|
|
break;
|
|
|
|
default:
|
|
case DW_AT_abstract_origin:
|
|
case DW_AT_accessibility:
|
|
case DW_AT_allocated:
|
|
case DW_AT_associated:
|
|
case DW_AT_data_location:
|
|
case DW_AT_declaration:
|
|
case DW_AT_description:
|
|
case DW_AT_sibling:
|
|
case DW_AT_threads_scaled:
|
|
case DW_AT_type:
|
|
case DW_AT_visibility:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (num_elements == 0)
|
|
{
|
|
if (upper_bound_valid && upper_bound >= lower_bound)
|
|
num_elements = upper_bound - lower_bound + 1;
|
|
}
|
|
|
|
element_orders.push_back (num_elements);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Type *
|
|
DWARFASTParserClang::GetTypeForDIE (const DWARFDIE &die)
|
|
{
|
|
if (die)
|
|
{
|
|
SymbolFileDWARF *dwarf = die.GetDWARF();
|
|
DWARFAttributes attributes;
|
|
const size_t num_attributes = die.GetAttributes(attributes);
|
|
if (num_attributes > 0)
|
|
{
|
|
DWARFFormValue type_die_form;
|
|
for (size_t i = 0; i < num_attributes; ++i)
|
|
{
|
|
dw_attr_t attr = attributes.AttributeAtIndex(i);
|
|
DWARFFormValue form_value;
|
|
|
|
if (attr == DW_AT_type && attributes.ExtractFormValueAtIndex(i, form_value))
|
|
return dwarf->ResolveTypeUID(dwarf->GetDIE (DIERef(form_value)), true);
|
|
}
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
clang::Decl *
|
|
DWARFASTParserClang::GetClangDeclForDIE (const DWARFDIE &die)
|
|
{
|
|
if (!die)
|
|
return nullptr;
|
|
|
|
switch (die.Tag())
|
|
{
|
|
case DW_TAG_variable:
|
|
case DW_TAG_constant:
|
|
case DW_TAG_formal_parameter:
|
|
case DW_TAG_imported_declaration:
|
|
case DW_TAG_imported_module:
|
|
break;
|
|
default:
|
|
return nullptr;
|
|
}
|
|
|
|
DIEToDeclMap::iterator cache_pos = m_die_to_decl.find(die.GetDIE());
|
|
if (cache_pos != m_die_to_decl.end())
|
|
return cache_pos->second;
|
|
|
|
if (DWARFDIE spec_die = die.GetReferencedDIE(DW_AT_specification))
|
|
{
|
|
clang::Decl *decl = GetClangDeclForDIE(spec_die);
|
|
m_die_to_decl[die.GetDIE()] = decl;
|
|
m_decl_to_die[decl].insert(die.GetDIE());
|
|
return decl;
|
|
}
|
|
|
|
clang::Decl *decl = nullptr;
|
|
switch (die.Tag())
|
|
{
|
|
case DW_TAG_variable:
|
|
case DW_TAG_constant:
|
|
case DW_TAG_formal_parameter:
|
|
{
|
|
SymbolFileDWARF *dwarf = die.GetDWARF();
|
|
Type *type = GetTypeForDIE(die);
|
|
const char *name = die.GetName();
|
|
clang::DeclContext *decl_context = ClangASTContext::DeclContextGetAsDeclContext(dwarf->GetDeclContextContainingUID(die.GetID()));
|
|
decl = m_ast.CreateVariableDeclaration(decl_context, name,
|
|
ClangUtil::GetQualType(type->GetForwardCompilerType()));
|
|
break;
|
|
}
|
|
case DW_TAG_imported_declaration:
|
|
{
|
|
SymbolFileDWARF *dwarf = die.GetDWARF();
|
|
DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
|
|
if (imported_uid)
|
|
{
|
|
CompilerDecl imported_decl = imported_uid.GetDecl();
|
|
if (imported_decl)
|
|
{
|
|
clang::DeclContext *decl_context = ClangASTContext::DeclContextGetAsDeclContext(dwarf->GetDeclContextContainingUID(die.GetID()));
|
|
if (clang::NamedDecl *clang_imported_decl = llvm::dyn_cast<clang::NamedDecl>((clang::Decl *)imported_decl.GetOpaqueDecl()))
|
|
decl = m_ast.CreateUsingDeclaration(decl_context, clang_imported_decl);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case DW_TAG_imported_module:
|
|
{
|
|
SymbolFileDWARF *dwarf = die.GetDWARF();
|
|
DWARFDIE imported_uid = die.GetAttributeValueAsReferenceDIE(DW_AT_import);
|
|
|
|
if (imported_uid)
|
|
{
|
|
CompilerDeclContext imported_decl_ctx = imported_uid.GetDeclContext();
|
|
if (imported_decl_ctx)
|
|
{
|
|
clang::DeclContext *decl_context = ClangASTContext::DeclContextGetAsDeclContext(dwarf->GetDeclContextContainingUID(die.GetID()));
|
|
if (clang::NamespaceDecl *ns_decl = ClangASTContext::DeclContextGetAsNamespaceDecl(imported_decl_ctx))
|
|
decl = m_ast.CreateUsingDirectiveDeclaration(decl_context, ns_decl);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
m_die_to_decl[die.GetDIE()] = decl;
|
|
m_decl_to_die[decl].insert(die.GetDIE());
|
|
|
|
return decl;
|
|
}
|
|
|
|
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;
|
|
|
|
case DW_TAG_lexical_block:
|
|
decl_ctx = (clang::DeclContext *)ResolveBlockDIE(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::BlockDecl *
|
|
DWARFASTParserClang::ResolveBlockDIE (const DWARFDIE &die)
|
|
{
|
|
if (die && die.Tag() == DW_TAG_lexical_block)
|
|
{
|
|
clang::BlockDecl *decl = llvm::cast_or_null<clang::BlockDecl>(m_die_to_decl_ctx[die.GetDIE()]);
|
|
|
|
if (!decl)
|
|
{
|
|
DWARFDIE decl_context_die;
|
|
clang::DeclContext *decl_context = GetClangDeclContextContainingDIE(die, &decl_context_die);
|
|
decl = m_ast.CreateBlockDeclaration(decl_context);
|
|
|
|
if (decl)
|
|
LinkDeclContextToDIE((clang::DeclContext *)decl, die);
|
|
}
|
|
|
|
return decl;
|
|
}
|
|
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<clang::NamespaceDecl *>(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<void*>(m_ast.getASTContext()),
|
|
die.GetID(),
|
|
namespace_name,
|
|
static_cast<void*>(namespace_decl),
|
|
static_cast<void*>(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<void*>(m_ast.getASTContext()),
|
|
die.GetID(),
|
|
static_cast<void*>(namespace_decl),
|
|
static_cast<void*>(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());
|
|
m_decl_ctx_to_die.insert(std::make_pair(decl_ctx, die));
|
|
}
|
|
|
|
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<DWARFDIE> src_name_to_die;
|
|
UniqueCStringMap<DWARFDIE> dst_name_to_die;
|
|
UniqueCStringMap<DWARFDIE> src_name_to_die_artificial;
|
|
UniqueCStringMap<DWARFDIE> 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<void*>(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()->GetDIEToType()[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<void*>(src_child_type),
|
|
src_child_type->GetID(),
|
|
src_die.GetOffset(), dst_die.GetOffset());
|
|
dst_die.GetDWARF()->GetDIEToType()[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<void*>(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()->GetDIEToType()[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<void*>(src_child_type),
|
|
src_child_type->GetID(),
|
|
src_die.GetOffset(),
|
|
dst_die.GetOffset());
|
|
dst_die.GetDWARF()->GetDIEToType()[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<void*>(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()->GetDIEToType()[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<void*>(src_child_type),
|
|
src_child_type->GetID(),
|
|
src_die.GetOffset(), dst_die.GetOffset());
|
|
dst_die.GetDWARF()->GetDIEToType()[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);
|
|
}
|
|
|