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llvm-project/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp

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//===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "SymbolFileDWARF.h"
// Other libraries and framework includes
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/Specifiers.h"
#include "clang/Sema/DeclSpec.h"
#include "llvm/Support/Casting.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/RegularExpression.h"
#include "lldb/Core/Scalar.h"
#include "lldb/Core/Section.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Core/Timer.h"
#include "lldb/Core/Value.h"
#include "lldb/Host/Host.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/ClangExternalASTSourceCallbacks.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/LineTable.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/ObjCLanguageRuntime.h"
#include "lldb/Target/CPPLanguageRuntime.h"
#include "DWARFCompileUnit.h"
#include "DWARFDebugAbbrev.h"
#include "DWARFDebugAranges.h"
#include "DWARFDebugInfo.h"
#include "DWARFDebugInfoEntry.h"
#include "DWARFDebugLine.h"
#include "DWARFDebugPubnames.h"
#include "DWARFDebugRanges.h"
#include "DWARFDIECollection.h"
#include "DWARFFormValue.h"
#include "DWARFLocationList.h"
#include "LogChannelDWARF.h"
#include "SymbolFileDWARFDebugMap.h"
#include <map>
//#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN
#ifdef ENABLE_DEBUG_PRINTF
#include <stdio.h>
#define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
#else
#define DEBUG_PRINTF(fmt, ...)
#endif
#define DIE_IS_BEING_PARSED ((lldb_private::Type*)1)
using namespace lldb;
using namespace lldb_private;
//static inline bool
//child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag)
//{
// switch (tag)
// {
// default:
// break;
// case DW_TAG_subprogram:
// case DW_TAG_inlined_subroutine:
// case DW_TAG_class_type:
// case DW_TAG_structure_type:
// case DW_TAG_union_type:
// return true;
// }
// return false;
//}
//
static AccessType
DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility)
{
switch (dwarf_accessibility)
{
case DW_ACCESS_public: return eAccessPublic;
case DW_ACCESS_private: return eAccessPrivate;
case DW_ACCESS_protected: return eAccessProtected;
default: break;
}
return eAccessNone;
}
#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
class DIEStack
{
public:
void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
{
m_dies.push_back (DIEInfo(cu, die));
}
void LogDIEs (Log *log, SymbolFileDWARF *dwarf)
{
StreamString log_strm;
const size_t n = m_dies.size();
log_strm.Printf("DIEStack[%zu]:\n", n);
for (size_t i=0; i<n; i++)
{
DWARFCompileUnit *cu = m_dies[i].cu;
const DWARFDebugInfoEntry *die = m_dies[i].die;
std::string qualified_name;
die->GetQualifiedName(dwarf, cu, qualified_name);
log_strm.Printf ("[%zu] 0x%8.8x: %s name='%s'\n",
i,
die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
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 (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
{
m_valid = true;
m_die_stack.Push (cu, die);
}
~ScopedPopper ()
{
if (m_valid)
m_die_stack.Pop();
}
protected:
DIEStack &m_die_stack;
bool m_valid;
};
protected:
struct DIEInfo {
DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) :
cu(c),
die(d)
{
}
DWARFCompileUnit *cu;
const DWARFDebugInfoEntry *die;
};
typedef std::vector<DIEInfo> Stack;
Stack m_dies;
};
#endif
void
SymbolFileDWARF::Initialize()
{
LogChannelDWARF::Initialize();
PluginManager::RegisterPlugin (GetPluginNameStatic(),
GetPluginDescriptionStatic(),
CreateInstance);
}
void
SymbolFileDWARF::Terminate()
{
PluginManager::UnregisterPlugin (CreateInstance);
LogChannelDWARF::Initialize();
}
const char *
SymbolFileDWARF::GetPluginNameStatic()
{
return "dwarf";
}
const char *
SymbolFileDWARF::GetPluginDescriptionStatic()
{
return "DWARF and DWARF3 debug symbol file reader.";
}
SymbolFile*
SymbolFileDWARF::CreateInstance (ObjectFile* obj_file)
{
return new SymbolFileDWARF(obj_file);
}
TypeList *
SymbolFileDWARF::GetTypeList ()
{
if (m_debug_map_symfile)
return m_debug_map_symfile->GetTypeList();
return m_obj_file->GetModule()->GetTypeList();
}
//----------------------------------------------------------------------
// Gets the first parent that is a lexical block, function or inlined
// subroutine, or compile unit.
//----------------------------------------------------------------------
static const DWARFDebugInfoEntry *
GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die)
{
const DWARFDebugInfoEntry *die;
for (die = child_die->GetParent(); die != NULL; die = die->GetParent())
{
dw_tag_t tag = die->Tag();
switch (tag)
{
case DW_TAG_compile_unit:
case DW_TAG_subprogram:
case DW_TAG_inlined_subroutine:
case DW_TAG_lexical_block:
return die;
}
}
return NULL;
}
SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) :
SymbolFile (objfile),
UserID (0), // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID
m_debug_map_symfile (NULL),
m_clang_tu_decl (NULL),
m_flags(),
m_data_debug_abbrev (),
m_data_debug_aranges (),
m_data_debug_frame (),
m_data_debug_info (),
m_data_debug_line (),
m_data_debug_loc (),
m_data_debug_ranges (),
m_data_debug_str (),
m_data_apple_names (),
m_data_apple_types (),
m_data_apple_namespaces (),
m_abbr(),
m_info(),
m_line(),
m_apple_names_ap (),
m_apple_types_ap (),
m_apple_namespaces_ap (),
m_apple_objc_ap (),
m_function_basename_index(),
m_function_fullname_index(),
m_function_method_index(),
m_function_selector_index(),
m_objc_class_selectors_index(),
m_global_index(),
m_type_index(),
m_namespace_index(),
m_indexed (false),
m_is_external_ast_source (false),
m_using_apple_tables (false),
m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate),
m_ranges(),
m_unique_ast_type_map ()
{
}
SymbolFileDWARF::~SymbolFileDWARF()
{
if (m_is_external_ast_source)
{
ModuleSP module_sp (m_obj_file->GetModule());
if (module_sp)
module_sp->GetClangASTContext().RemoveExternalSource ();
}
}
static const ConstString &
GetDWARFMachOSegmentName ()
{
static ConstString g_dwarf_section_name ("__DWARF");
return g_dwarf_section_name;
}
UniqueDWARFASTTypeMap &
SymbolFileDWARF::GetUniqueDWARFASTTypeMap ()
{
if (m_debug_map_symfile)
return m_debug_map_symfile->GetUniqueDWARFASTTypeMap ();
return m_unique_ast_type_map;
}
ClangASTContext &
SymbolFileDWARF::GetClangASTContext ()
{
if (m_debug_map_symfile)
return m_debug_map_symfile->GetClangASTContext ();
ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
if (!m_is_external_ast_source)
{
m_is_external_ast_source = true;
llvm::OwningPtr<clang::ExternalASTSource> ast_source_ap (
new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl,
SymbolFileDWARF::CompleteObjCInterfaceDecl,
SymbolFileDWARF::FindExternalVisibleDeclsByName,
SymbolFileDWARF::LayoutRecordType,
this));
ast.SetExternalSource (ast_source_ap);
}
return ast;
}
void
SymbolFileDWARF::InitializeObject()
{
// Install our external AST source callbacks so we can complete Clang types.
ModuleSP module_sp (m_obj_file->GetModule());
if (module_sp)
{
const SectionList *section_list = m_obj_file->GetSectionList();
const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
// Memory map the DWARF mach-o segment so we have everything mmap'ed
// to keep our heap memory usage down.
if (section)
m_obj_file->MemoryMapSectionData(section, m_dwarf_data);
}
get_apple_names_data();
if (m_data_apple_names.GetByteSize() > 0)
{
m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names"));
if (m_apple_names_ap->IsValid())
m_using_apple_tables = true;
else
m_apple_names_ap.reset();
}
get_apple_types_data();
if (m_data_apple_types.GetByteSize() > 0)
{
m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types"));
if (m_apple_types_ap->IsValid())
m_using_apple_tables = true;
else
m_apple_types_ap.reset();
}
get_apple_namespaces_data();
if (m_data_apple_namespaces.GetByteSize() > 0)
{
m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces"));
if (m_apple_namespaces_ap->IsValid())
m_using_apple_tables = true;
else
m_apple_namespaces_ap.reset();
}
get_apple_objc_data();
if (m_data_apple_objc.GetByteSize() > 0)
{
m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc"));
if (m_apple_objc_ap->IsValid())
m_using_apple_tables = true;
else
m_apple_objc_ap.reset();
}
}
bool
SymbolFileDWARF::SupportedVersion(uint16_t version)
{
return version == 2 || version == 3;
}
uint32_t
SymbolFileDWARF::CalculateAbilities ()
{
uint32_t abilities = 0;
if (m_obj_file != NULL)
{
const Section* section = NULL;
const SectionList *section_list = m_obj_file->GetSectionList();
if (section_list == NULL)
return 0;
uint64_t debug_abbrev_file_size = 0;
uint64_t debug_aranges_file_size = 0;
uint64_t debug_frame_file_size = 0;
uint64_t debug_info_file_size = 0;
uint64_t debug_line_file_size = 0;
uint64_t debug_loc_file_size = 0;
uint64_t debug_macinfo_file_size = 0;
uint64_t debug_pubnames_file_size = 0;
uint64_t debug_pubtypes_file_size = 0;
uint64_t debug_ranges_file_size = 0;
uint64_t debug_str_file_size = 0;
section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get();
if (section)
section_list = &section->GetChildren ();
section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get();
if (section != NULL)
{
debug_info_file_size = section->GetFileSize();
section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get();
if (section)
debug_abbrev_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugAbbrevData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get();
if (section)
debug_aranges_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugArangesData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get();
if (section)
debug_frame_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugFrameData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get();
if (section)
debug_line_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugLineData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get();
if (section)
debug_loc_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugLocData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get();
if (section)
debug_macinfo_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugMacInfoData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get();
if (section)
debug_pubnames_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugPubNamesData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get();
if (section)
debug_pubtypes_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugPubTypesData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get();
if (section)
debug_ranges_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugRangesData);
section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get();
if (section)
debug_str_file_size = section->GetFileSize();
else
m_flags.Set (flagsGotDebugStrData);
}
if (debug_abbrev_file_size > 0 && debug_info_file_size > 0)
abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes;
if (debug_line_file_size > 0)
abilities |= LineTables;
if (debug_aranges_file_size > 0)
abilities |= AddressAcceleratorTable;
if (debug_pubnames_file_size > 0)
abilities |= FunctionAcceleratorTable;
if (debug_pubtypes_file_size > 0)
abilities |= TypeAcceleratorTable;
if (debug_macinfo_file_size > 0)
abilities |= MacroInformation;
if (debug_frame_file_size > 0)
abilities |= CallFrameInformation;
}
return abilities;
}
const DataExtractor&
SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DataExtractor &data)
{
if (m_flags.IsClear (got_flag))
{
m_flags.Set (got_flag);
const SectionList *section_list = m_obj_file->GetSectionList();
if (section_list)
{
SectionSP section_sp (section_list->FindSectionByType(sect_type, true));
if (section_sp)
{
// See if we memory mapped the DWARF segment?
if (m_dwarf_data.GetByteSize())
{
data.SetData(m_dwarf_data, section_sp->GetOffset (), section_sp->GetFileSize());
}
else
{
if (m_obj_file->ReadSectionData (section_sp.get(), data) == 0)
data.Clear();
}
}
}
}
return data;
}
const DataExtractor&
SymbolFileDWARF::get_debug_abbrev_data()
{
return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev);
}
const DataExtractor&
SymbolFileDWARF::get_debug_aranges_data()
{
return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges);
}
const DataExtractor&
SymbolFileDWARF::get_debug_frame_data()
{
return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame);
}
const DataExtractor&
SymbolFileDWARF::get_debug_info_data()
{
return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info);
}
const DataExtractor&
SymbolFileDWARF::get_debug_line_data()
{
return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line);
}
const DataExtractor&
SymbolFileDWARF::get_debug_loc_data()
{
return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc);
}
const DataExtractor&
SymbolFileDWARF::get_debug_ranges_data()
{
return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges);
}
const DataExtractor&
SymbolFileDWARF::get_debug_str_data()
{
return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str);
}
const DataExtractor&
SymbolFileDWARF::get_apple_names_data()
{
return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names);
}
const DataExtractor&
SymbolFileDWARF::get_apple_types_data()
{
return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types);
}
const DataExtractor&
SymbolFileDWARF::get_apple_namespaces_data()
{
return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces);
}
const DataExtractor&
SymbolFileDWARF::get_apple_objc_data()
{
return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc);
}
DWARFDebugAbbrev*
SymbolFileDWARF::DebugAbbrev()
{
if (m_abbr.get() == NULL)
{
const DataExtractor &debug_abbrev_data = get_debug_abbrev_data();
if (debug_abbrev_data.GetByteSize() > 0)
{
m_abbr.reset(new DWARFDebugAbbrev());
if (m_abbr.get())
m_abbr->Parse(debug_abbrev_data);
}
}
return m_abbr.get();
}
const DWARFDebugAbbrev*
SymbolFileDWARF::DebugAbbrev() const
{
return m_abbr.get();
}
DWARFDebugInfo*
SymbolFileDWARF::DebugInfo()
{
if (m_info.get() == NULL)
{
Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
if (get_debug_info_data().GetByteSize() > 0)
{
m_info.reset(new DWARFDebugInfo());
if (m_info.get())
{
m_info->SetDwarfData(this);
}
}
}
return m_info.get();
}
const DWARFDebugInfo*
SymbolFileDWARF::DebugInfo() const
{
return m_info.get();
}
DWARFCompileUnit*
SymbolFileDWARF::GetDWARFCompileUnitForUID(lldb::user_id_t cu_uid)
{
DWARFDebugInfo* info = DebugInfo();
if (info && UserIDMatches(cu_uid))
return info->GetCompileUnit((dw_offset_t)cu_uid).get();
return NULL;
}
DWARFDebugRanges*
SymbolFileDWARF::DebugRanges()
{
if (m_ranges.get() == NULL)
{
Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this);
if (get_debug_ranges_data().GetByteSize() > 0)
{
m_ranges.reset(new DWARFDebugRanges());
if (m_ranges.get())
m_ranges->Extract(this);
}
}
return m_ranges.get();
}
const DWARFDebugRanges*
SymbolFileDWARF::DebugRanges() const
{
return m_ranges.get();
}
lldb::CompUnitSP
SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
{
CompUnitSP cu_sp;
if (dwarf_cu)
{
CompileUnit *comp_unit = (CompileUnit*)dwarf_cu->GetUserData();
if (comp_unit)
{
// We already parsed this compile unit, had out a shared pointer to it
cu_sp = comp_unit->shared_from_this();
}
else
{
ModuleSP module_sp (m_obj_file->GetModule());
if (module_sp)
{
const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly ();
if (cu_die)
{
const char * cu_die_name = cu_die->GetName(this, dwarf_cu);
const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_language, 0);
if (cu_die_name)
{
std::string ramapped_file;
FileSpec cu_file_spec;
if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0')
{
// If we have a full path to the compile unit, we don't need to resolve
// the file. This can be expensive e.g. when the source files are NFS mounted.
if (module_sp->RemapSourceFile(cu_die_name, ramapped_file))
cu_file_spec.SetFile (ramapped_file.c_str(), false);
else
cu_file_spec.SetFile (cu_die_name, false);
}
else
{
std::string fullpath(cu_comp_dir);
if (*fullpath.rbegin() != '/')
fullpath += '/';
fullpath += cu_die_name;
if (module_sp->RemapSourceFile (fullpath.c_str(), ramapped_file))
cu_file_spec.SetFile (ramapped_file.c_str(), false);
else
cu_file_spec.SetFile (fullpath.c_str(), false);
}
cu_sp.reset(new CompileUnit (module_sp,
dwarf_cu,
cu_file_spec,
MakeUserID(dwarf_cu->GetOffset()),
cu_language));
if (cu_sp)
{
dwarf_cu->SetUserData(cu_sp.get());
if (m_debug_map_symfile)
{
// Let the symbol file register the compile unit with
// the symbol vendor using its compile unit index
// when we are doing DWARF in .o files + debug map
m_debug_map_symfile->SetCompileUnit(this, cu_sp);
}
else
{
// Figure out the compile unit index if we weren't given one
if (cu_idx == UINT32_MAX)
DebugInfo()->GetCompileUnit(dwarf_cu->GetOffset(), &cu_idx);
m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(cu_idx, cu_sp);
}
}
}
}
}
}
}
return cu_sp;
}
uint32_t
SymbolFileDWARF::GetNumCompileUnits()
{
DWARFDebugInfo* info = DebugInfo();
if (info)
return info->GetNumCompileUnits();
return 0;
}
CompUnitSP
SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx)
{
CompUnitSP cu_sp;
DWARFDebugInfo* info = DebugInfo();
if (info)
{
DWARFCompileUnit* dwarf_cu = info->GetCompileUnitAtIndex(cu_idx);
if (dwarf_cu)
cu_sp = ParseCompileUnit(dwarf_cu, cu_idx);
}
return cu_sp;
}
static void
AddRangesToBlock (Block& block,
DWARFDebugRanges::RangeList& ranges,
addr_t block_base_addr)
{
const size_t num_ranges = ranges.GetSize();
for (size_t i = 0; i<num_ranges; ++i)
{
const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i);
const addr_t range_base = range.GetRangeBase();
assert (range_base >= block_base_addr);
block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));;
}
block.FinalizeRanges ();
}
Function *
SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die)
{
DWARFDebugRanges::RangeList 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;
assert (die->Tag() == DW_TAG_subprogram);
if (die->Tag() != DW_TAG_subprogram)
return NULL;
if (die->GetDIENamesAndRanges (this,
dwarf_cu,
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)
{
func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, m_obj_file->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(mangled, true);
else if (name)
func_name.SetValue(name, false);
FunctionSP func_sp;
std::auto_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));
// Supply the type _only_ if it has already been parsed
Type *func_type = m_die_to_type.lookup (die);
assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED);
func_range.GetBaseAddress().ResolveLinkedAddress();
const user_id_t func_user_id = MakeUserID(die->GetOffset());
func_sp.reset(new Function (sc.comp_unit,
func_user_id, // UserID is the DIE offset
func_user_id,
func_name,
func_type,
func_range)); // first address range
if (func_sp.get() != NULL)
{
if (frame_base.IsValid())
func_sp->GetFrameBaseExpression() = frame_base;
sc.comp_unit->AddFunction(func_sp);
return func_sp.get();
}
}
}
return NULL;
}
size_t
SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc)
{
assert (sc.comp_unit);
size_t functions_added = 0;
DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID());
if (dwarf_cu)
{
DWARFDIECollection function_dies;
const size_t num_funtions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies);
size_t func_idx;
for (func_idx = 0; func_idx < num_funtions; ++func_idx)
{
const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx);
if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL)
{
if (ParseCompileUnitFunction(sc, dwarf_cu, die))
++functions_added;
}
}
//FixupTypes();
}
return functions_added;
}
bool
SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files)
{
assert (sc.comp_unit);
DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID());
assert (dwarf_cu);
const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
if (cu_die)
{
const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
// All file indexes in DWARF are one based and a file of index zero is
// supposed to be the compile unit itself.
support_files.Append (*sc.comp_unit);
return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
}
return false;
}
struct ParseDWARFLineTableCallbackInfo
{
LineTable* line_table;
const SectionList *section_list;
lldb::addr_t prev_sect_file_base_addr;
lldb::addr_t curr_sect_file_base_addr;
bool is_oso_for_debug_map;
bool prev_in_final_executable;
DWARFDebugLine::Row prev_row;
SectionSP prev_section_sp;
SectionSP curr_section_sp;
};
//----------------------------------------------------------------------
// ParseStatementTableCallback
//----------------------------------------------------------------------
static void
ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData)
{
LineTable* line_table = ((ParseDWARFLineTableCallbackInfo*)userData)->line_table;
if (state.row == DWARFDebugLine::State::StartParsingLineTable)
{
// Just started parsing the line table
}
else if (state.row == DWARFDebugLine::State::DoneParsingLineTable)
{
// Done parsing line table, nothing to do for the cleanup
}
else
{
ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData;
// We have a new row, lets append it
if (info->curr_section_sp.get() == NULL || info->curr_section_sp->ContainsFileAddress(state.address) == false)
{
info->prev_section_sp = info->curr_section_sp;
info->prev_sect_file_base_addr = info->curr_sect_file_base_addr;
// If this is an end sequence entry, then we subtract one from the
// address to make sure we get an address that is not the end of
// a section.
if (state.end_sequence && state.address != 0)
info->curr_section_sp = info->section_list->FindSectionContainingFileAddress (state.address - 1);
else
info->curr_section_sp = info->section_list->FindSectionContainingFileAddress (state.address);
if (info->curr_section_sp.get())
info->curr_sect_file_base_addr = info->curr_section_sp->GetFileAddress ();
else
info->curr_sect_file_base_addr = 0;
}
if (info->curr_section_sp.get())
{
lldb::addr_t curr_line_section_offset = state.address - info->curr_sect_file_base_addr;
// Check for the fancy section magic to determine if we
if (info->is_oso_for_debug_map)
{
// When this is a debug map object file that contains DWARF
// (referenced from an N_OSO debug map nlist entry) we will have
// a file address in the file range for our section from the
// original .o file, and a load address in the executable that
// contains the debug map.
//
// If the sections for the file range and load range are
// different, we have a remapped section for the function and
// this address is resolved. If they are the same, then the
// function for this address didn't make it into the final
// executable.
bool curr_in_final_executable = info->curr_section_sp->GetLinkedSection () != NULL;
// If we are doing DWARF with debug map, then we need to carefully
// add each line table entry as there may be gaps as functions
// get moved around or removed.
if (!info->prev_row.end_sequence && info->prev_section_sp.get())
{
if (info->prev_in_final_executable)
{
bool terminate_previous_entry = false;
if (!curr_in_final_executable)
{
// Check for the case where the previous line entry
// in a function made it into the final executable,
// yet the current line entry falls in a function
// that didn't. The line table used to be contiguous
// through this address range but now it isn't. We
// need to terminate the previous line entry so
// that we can reconstruct the line range correctly
// for it and to keep the line table correct.
terminate_previous_entry = true;
}
else if (info->curr_section_sp.get() != info->prev_section_sp.get())
{
// Check for cases where the line entries used to be
// contiguous address ranges, but now they aren't.
// This can happen when order files specify the
// ordering of the functions.
lldb::addr_t prev_line_section_offset = info->prev_row.address - info->prev_sect_file_base_addr;
Section *curr_sect = info->curr_section_sp.get();
Section *prev_sect = info->prev_section_sp.get();
assert (curr_sect->GetLinkedSection());
assert (prev_sect->GetLinkedSection());
lldb::addr_t object_file_addr_delta = state.address - info->prev_row.address;
lldb::addr_t curr_linked_file_addr = curr_sect->GetLinkedFileAddress() + curr_line_section_offset;
lldb::addr_t prev_linked_file_addr = prev_sect->GetLinkedFileAddress() + prev_line_section_offset;
lldb::addr_t linked_file_addr_delta = curr_linked_file_addr - prev_linked_file_addr;
if (object_file_addr_delta != linked_file_addr_delta)
terminate_previous_entry = true;
}
if (terminate_previous_entry)
{
line_table->InsertLineEntry (info->prev_section_sp,
state.address - info->prev_sect_file_base_addr,
info->prev_row.line,
info->prev_row.column,
info->prev_row.file,
false, // is_stmt
false, // basic_block
false, // state.prologue_end
false, // state.epilogue_begin
true); // end_sequence);
}
}
}
if (curr_in_final_executable)
{
line_table->InsertLineEntry (info->curr_section_sp,
curr_line_section_offset,
state.line,
state.column,
state.file,
state.is_stmt,
state.basic_block,
state.prologue_end,
state.epilogue_begin,
state.end_sequence);
info->prev_section_sp = info->curr_section_sp;
}
else
{
// If the current address didn't make it into the final
// executable, the current section will be the __text
// segment in the .o file, so we need to clear this so
// we can catch the next function that did make it into
// the final executable.
info->prev_section_sp.reset();
info->curr_section_sp.reset();
}
info->prev_in_final_executable = curr_in_final_executable;
}
else
{
// We are not in an object file that contains DWARF for an
// N_OSO, this is just a normal DWARF file. The DWARF spec
// guarantees that the addresses will be in increasing order
// so, since we store line tables in file address order, we
// can always just append the line entry without needing to
// search for the correct insertion point (we don't need to
// use LineEntry::InsertLineEntry()).
line_table->AppendLineEntry (info->curr_section_sp,
curr_line_section_offset,
state.line,
state.column,
state.file,
state.is_stmt,
state.basic_block,
state.prologue_end,
state.epilogue_begin,
state.end_sequence);
}
}
info->prev_row = state;
}
}
bool
SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc)
{
assert (sc.comp_unit);
if (sc.comp_unit->GetLineTable() != NULL)
return true;
DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID());
if (dwarf_cu)
{
const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly();
if (dwarf_cu_die)
{
const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
if (cu_line_offset != DW_INVALID_OFFSET)
{
std::auto_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit));
if (line_table_ap.get())
{
ParseDWARFLineTableCallbackInfo info = {
line_table_ap.get(),
m_obj_file->GetSectionList(),
0,
0,
m_debug_map_symfile != NULL,
false,
DWARFDebugLine::Row(),
SectionSP(),
SectionSP()
};
uint32_t offset = cu_line_offset;
DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info);
sc.comp_unit->SetLineTable(line_table_ap.release());
return true;
}
}
}
}
return false;
}
size_t
SymbolFileDWARF::ParseFunctionBlocks
(
const SymbolContext& sc,
Block *parent_block,
DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *die,
addr_t subprogram_low_pc,
uint32_t depth
)
{
size_t blocks_added = 0;
while (die != NULL)
{
dw_tag_t tag = die->Tag();
switch (tag)
{
case DW_TAG_inlined_subroutine:
case DW_TAG_subprogram:
case DW_TAG_lexical_block:
{
Block *block = NULL;
if (tag == DW_TAG_subprogram)
{
// Skip any DW_TAG_subprogram DIEs that are inside
// of a normal or inlined functions. These will be
// parsed on their own as separate entities.
if (depth > 0)
break;
block = parent_block;
}
else
{
BlockSP block_sp(new Block (MakeUserID(die->GetOffset())));
parent_block->AddChild(block_sp);
block = block_sp.get();
}
DWARFDebugRanges::RangeList ranges;
const char *name = NULL;
const char *mangled_name = 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;
if (die->GetDIENamesAndRanges (this,
dwarf_cu,
name,
mangled_name,
ranges,
decl_file, decl_line, decl_column,
call_file, call_line, call_column))
{
if (tag == DW_TAG_subprogram)
{
assert (subprogram_low_pc == LLDB_INVALID_ADDRESS);
subprogram_low_pc = ranges.GetMinRangeBase(0);
}
else if (tag == DW_TAG_inlined_subroutine)
{
// We get called here for inlined subroutines in two ways.
// The first time is when we are making the Function object
// for this inlined concrete instance. Since we're creating a top level block at
// here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we need to
// adjust the containing address.
// The second time is when we are parsing the blocks inside the function that contains
// the inlined concrete instance. Since these will be blocks inside the containing "real"
// function the offset will be for that function.
if (subprogram_low_pc == LLDB_INVALID_ADDRESS)
{
subprogram_low_pc = ranges.GetMinRangeBase(0);
}
}
AddRangesToBlock (*block, ranges, subprogram_low_pc);
if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL))
{
std::auto_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));
std::auto_ptr<Declaration> call_ap;
if (call_file != 0 || call_line != 0 || call_column != 0)
call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file),
call_line, call_column));
block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get());
}
++blocks_added;
if (die->HasChildren())
{
blocks_added += ParseFunctionBlocks (sc,
block,
dwarf_cu,
die->GetFirstChild(),
subprogram_low_pc,
depth + 1);
}
}
}
break;
default:
break;
}
// Only parse siblings of the block if we are not at depth zero. A depth
// of zero indicates we are currently parsing the top level
// DW_TAG_subprogram DIE
if (depth == 0)
die = NULL;
else
die = die->GetSibling();
}
return blocks_added;
}
bool
SymbolFileDWARF::ParseTemplateDIE (DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *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:
{
const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_attributes = die->GetAttributes (this,
dwarf_cu,
fixed_form_sizes,
attributes);
const char *name = NULL;
Type *lldb_type = NULL;
clang_type_t clang_type = NULL;
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(this, i, form_value))
name = form_value.AsCString(&get_debug_str_data());
break;
case DW_AT_type:
if (attributes.ExtractFormValueAtIndex(this, i, form_value))
{
const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu);
lldb_type = ResolveTypeUID(type_die_offset);
if (lldb_type)
clang_type = lldb_type->GetClangForwardType();
}
break;
case DW_AT_const_value:
if (attributes.ExtractFormValueAtIndex(this, i, form_value))
{
uval64_valid = true;
uval64 = form_value.Unsigned();
}
break;
default:
break;
}
}
if (name && lldb_type && clang_type)
{
bool is_signed = false;
template_param_infos.names.push_back(name);
clang::QualType clang_qual_type (clang::QualType::getFromOpaquePtr (clang_type));
if (tag == DW_TAG_template_value_parameter && ClangASTContext::IsIntegerType (clang_type, is_signed) && uval64_valid)
{
llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed);
template_param_infos.args.push_back (clang::TemplateArgument (llvm::APSInt(apint), clang_qual_type));
}
else
{
template_param_infos.args.push_back (clang::TemplateArgument (clang_qual_type));
}
}
else
{
return false;
}
}
}
return true;
default:
break;
}
return false;
}
bool
SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *parent_die,
ClangASTContext::TemplateParameterInfos &template_param_infos)
{
if (parent_die == NULL)
return NULL;
Args template_parameter_names;
for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild();
die != NULL;
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 (dwarf_cu, die, template_param_infos);
break;
default:
break;
}
}
if (template_param_infos.args.empty())
return false;
return template_param_infos.args.size() == template_param_infos.names.size();
}
clang::ClassTemplateDecl *
SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx,
lldb::AccessType access_type,
const char *parent_name,
int tag_decl_kind,
const ClangASTContext::TemplateParameterInfos &template_param_infos)
{
if (template_param_infos.IsValid())
{
std::string template_basename(parent_name);
template_basename.erase (template_basename.find('<'));
ClangASTContext &ast = GetClangASTContext();
return ast.CreateClassTemplateDecl (decl_ctx,
access_type,
template_basename.c_str(),
tag_decl_kind,
template_param_infos);
}
return NULL;
}
size_t
SymbolFileDWARF::ParseChildMembers
(
const SymbolContext& sc,
DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *parent_die,
clang_type_t class_clang_type,
const LanguageType class_language,
std::vector<clang::CXXBaseSpecifier *>& base_classes,
std::vector<int>& member_accessibilities,
DWARFDIECollection& member_function_dies,
AccessType& default_accessibility,
bool &is_a_class,
LayoutInfo &layout_info
)
{
if (parent_die == NULL)
return 0;
size_t count = 0;
const DWARFDebugInfoEntry *die;
const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
uint32_t member_idx = 0;
for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
{
dw_tag_t tag = die->Tag();
switch (tag)
{
case DW_TAG_member:
case DW_TAG_APPLE_Property:
{
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_attributes = die->GetAttributes (this,
dwarf_cu,
fixed_form_sizes,
attributes);
if (num_attributes > 0)
{
Declaration decl;
//DWARFExpression location;
const char *name = NULL;
const char *prop_name = NULL;
const char *prop_getter_name = NULL;
const char *prop_setter_name = NULL;
uint32_t prop_attributes = 0;
bool is_artificial = false;
lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
AccessType accessibility = eAccessNone;
uint32_t member_byte_offset = UINT32_MAX;
size_t byte_size = 0;
size_t bit_offset = 0;
size_t bit_size = 0;
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(this, 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(&get_debug_str_data()); break;
case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break;
case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break;
case DW_AT_bit_size: bit_size = form_value.Unsigned(); break;
case DW_AT_byte_size: byte_size = form_value.Unsigned(); break;
case DW_AT_data_member_location:
if (form_value.BlockData())
{
Value initialValue(0);
Value memberOffset(0);
const DataExtractor& debug_info_data = get_debug_info_data();
uint32_t block_length = form_value.Unsigned();
uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
if (DWARFExpression::Evaluate(NULL, // ExecutionContext *
NULL, // clang::ASTContext *
NULL, // ClangExpressionVariableList *
NULL, // ClangExpressionDeclMap *
NULL, // RegisterContext *
debug_info_data,
block_offset,
block_length,
eRegisterKindDWARF,
&initialValue,
memberOffset,
NULL))
{
member_byte_offset = memberOffset.ResolveValue(NULL, NULL).UInt();
}
}
break;
case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break;
case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break;
case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(&get_debug_str_data()); break;
case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(&get_debug_str_data()); break;
case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(&get_debug_str_data()); break;
case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break;
default:
case DW_AT_declaration:
case DW_AT_description:
case DW_AT_mutable:
case DW_AT_visibility:
case DW_AT_sibling:
break;
}
}
}
if (prop_name)
{
ConstString fixed_getter;
ConstString fixed_setter;
// Check if the property getter/setter were provided as full
// names. We want basenames, so we extract them.
if (prop_getter_name && prop_getter_name[0] == '-')
{
ObjCLanguageRuntime::ParseMethodName (prop_getter_name,
NULL,
&fixed_getter,
NULL,
NULL);
prop_getter_name = fixed_getter.GetCString();
}
if (prop_setter_name && prop_setter_name[0] == '-')
{
ObjCLanguageRuntime::ParseMethodName (prop_setter_name,
NULL,
&fixed_setter,
NULL,
NULL);
prop_setter_name = fixed_setter.GetCString();
}
// If the names haven't been provided, they need to be
// filled in.
if (!prop_getter_name)
{
prop_getter_name = prop_name;
}
if (!prop_setter_name && prop_name[0] && !(prop_attributes & DW_APPLE_PROPERTY_readonly))
{
StreamString ss;
ss.Printf("set%c%s:",
toupper(prop_name[0]),
&prop_name[1]);
fixed_setter.SetCString(ss.GetData());
prop_setter_name = fixed_setter.GetCString();
}
}
// Clang has a DWARF generation bug where sometimes it
// represents fields that are references with bad byte size
// and bit size/offset information such as:
//
// DW_AT_byte_size( 0x00 )
// DW_AT_bit_size( 0x40 )
// DW_AT_bit_offset( 0xffffffffffffffc0 )
//
// So check the bit offset to make sure it is sane, and if
// the values are not sane, remove them. If we don't do this
// then we will end up with a crash if we try to use this
// type in an expression when clang becomes unhappy with its
// recycled debug info.
if (bit_offset > 128)
{
bit_size = 0;
bit_offset = 0;
}
// FIXME: Make Clang ignore Objective-C accessibility for expressions
if (class_language == eLanguageTypeObjC ||
class_language == eLanguageTypeObjC_plus_plus)
accessibility = eAccessNone;
if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name))
{
// Not all compilers will mark the vtable pointer
// member as artificial (llvm-gcc). We can't have
// the virtual members in our classes otherwise it
// throws off all child offsets since we end up
// having and extra pointer sized member in our
// class layouts.
is_artificial = true;
}
if (is_artificial == false)
{
Type *member_type = ResolveTypeUID(encoding_uid);
clang::FieldDecl *field_decl = NULL;
if (tag == DW_TAG_member)
{
if (member_type)
{
if (accessibility == eAccessNone)
accessibility = default_accessibility;
member_accessibilities.push_back(accessibility);
field_decl = GetClangASTContext().AddFieldToRecordType (class_clang_type,
name,
member_type->GetClangLayoutType(),
accessibility,
bit_size);
GetClangASTContext().SetMetadata((uintptr_t)field_decl, MakeUserID(die->GetOffset()));
}
else
{
if (name)
GetObjectFile()->GetModule()->ReportError ("0x%8.8llx: DW_TAG_member '%s' refers to type 0x%8.8llx which was unable to be parsed",
MakeUserID(die->GetOffset()),
name,
encoding_uid);
else
GetObjectFile()->GetModule()->ReportError ("0x%8.8llx: DW_TAG_member refers to type 0x%8.8llx which was unable to be parsed",
MakeUserID(die->GetOffset()),
encoding_uid);
}
if (member_byte_offset != UINT32_MAX || bit_size != 0)
{
/////////////////////////////////////////////////////////////
// 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.
/////////////////////////////////////////////////////////////
ByteOrder object_endian = GetObjectFile()->GetModule()->GetArchitecture().GetDefaultEndian();
uint64_t total_bit_offset = 0;
total_bit_offset += (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8));
if (object_endian == eByteOrderLittle)
{
total_bit_offset += byte_size * 8;
total_bit_offset -= (bit_offset + bit_size);
}
else
{
total_bit_offset += bit_offset;
}
layout_info.field_offsets.insert(std::make_pair(field_decl, total_bit_offset));
}
}
if (prop_name != NULL)
{
clang::ObjCIvarDecl *ivar_decl = NULL;
if (field_decl)
{
ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl);
assert (ivar_decl != NULL);
}
GetClangASTContext().AddObjCClassProperty (class_clang_type,
prop_name,
member_type->GetClangLayoutType(),
ivar_decl,
prop_setter_name,
prop_getter_name,
prop_attributes);
GetClangASTContext().SetMetadata((uintptr_t)ivar_decl, MakeUserID(die->GetOffset()));
}
}
}
++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
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_attributes = die->GetAttributes (this,
dwarf_cu,
fixed_form_sizes,
attributes);
if (num_attributes > 0)
{
Declaration decl;
DWARFExpression location;
lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
AccessType accessibility = default_accessibility;
bool is_virtual = false;
bool is_base_of_class = true;
off_t member_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(this, 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_uid = form_value.Reference(dwarf_cu); break;
case DW_AT_data_member_location:
if (form_value.BlockData())
{
Value initialValue(0);
Value memberOffset(0);
const DataExtractor& debug_info_data = get_debug_info_data();
uint32_t block_length = form_value.Unsigned();
uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
if (DWARFExpression::Evaluate (NULL,
NULL,
NULL,
NULL,
NULL,
debug_info_data,
block_offset,
block_length,
eRegisterKindDWARF,
&initialValue,
memberOffset,
NULL))
{
member_offset = memberOffset.ResolveValue(NULL, NULL).UInt();
}
}
break;
case DW_AT_accessibility:
accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned());
break;
case DW_AT_virtuality: is_virtual = form_value.Unsigned() != 0; break;
default:
case DW_AT_sibling:
break;
}
}
}
Type *base_class_type = ResolveTypeUID(encoding_uid);
assert(base_class_type);
clang_type_t base_class_clang_type = base_class_type->GetClangFullType();
assert (base_class_clang_type);
if (class_language == eLanguageTypeObjC)
{
GetClangASTContext().SetObjCSuperClass(class_clang_type, base_class_clang_type);
}
else
{
base_classes.push_back (GetClangASTContext().CreateBaseClassSpecifier (base_class_clang_type,
accessibility,
is_virtual,
is_base_of_class));
}
}
}
break;
default:
break;
}
}
return count;
}
clang::DeclContext*
SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid)
{
DWARFDebugInfo* debug_info = DebugInfo();
if (debug_info && UserIDMatches(type_uid))
{
DWARFCompileUnitSP cu_sp;
const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp);
if (die)
return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
}
return NULL;
}
clang::DeclContext*
SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid)
{
if (UserIDMatches(type_uid))
return GetClangDeclContextForDIEOffset (sc, type_uid);
return NULL;
}
Type*
SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
{
if (UserIDMatches(type_uid))
{
DWARFDebugInfo* debug_info = DebugInfo();
if (debug_info)
{
DWARFCompileUnitSP cu_sp;
const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp);
const bool assert_not_being_parsed = true;
return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed);
}
}
return NULL;
}
Type*
SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed)
{
if (die != NULL)
{
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
if (log)
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
die->GetName(this, cu));
// We might be coming in in the middle of a type tree (a class
// withing a class, an enum within a class), so parse any needed
// parent DIEs before we get to this one...
const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
switch (decl_ctx_die->Tag())
{
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_class_type:
{
// Get the type, which could be a forward declaration
if (log)
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x",
die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
die->GetName(this, cu),
decl_ctx_die->GetOffset());
//
// Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed);
// if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag()))
// {
// if (log)
// GetObjectFile()->GetModule()->LogMessage (log.get(),
// "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function",
// die->GetOffset(),
// DW_TAG_value_to_name(die->Tag()),
// die->GetName(this, cu),
// decl_ctx_die->GetOffset());
// // Ask the type to complete itself if it already hasn't since if we
// // want a function (method or static) from a class, the class must
// // create itself and add it's own methods and class functions.
// if (parent_type)
// parent_type->GetClangFullType();
// }
}
break;
default:
break;
}
return ResolveType (cu, die);
}
return NULL;
}
// This function is used when SymbolFileDWARFDebugMap owns a bunch of
// SymbolFileDWARF objects to detect if this DWARF file is the one that
// can resolve a clang_type.
bool
SymbolFileDWARF::HasForwardDeclForClangType (lldb::clang_type_t clang_type)
{
clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type);
const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers);
return die != NULL;
}
lldb::clang_type_t
SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (lldb::clang_type_t clang_type)
{
// We have a struct/union/class/enum that needs to be fully resolved.
clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type);
const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers);
if (die == NULL)
{
// We have already resolved this type...
return clang_type;
}
// Once we start resolving this type, remove it from the forward declaration
// map in case anyone child members or other types require this type to get resolved.
// The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition
// are done.
m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers);
// Disable external storage for this type so we don't get anymore
// clang::ExternalASTSource queries for this type.
ClangASTContext::SetHasExternalStorage (clang_type, false);
DWARFDebugInfo* debug_info = DebugInfo();
DWARFCompileUnit *dwarf_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get();
Type *type = m_die_to_type.lookup (die);
const dw_tag_t tag = die->Tag();
LogSP log (LogChannelDWARF::GetLogIfAny(DWARF_LOG_DEBUG_INFO|DWARF_LOG_TYPE_COMPLETION));
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"0x%8.8llx: %s '%s' resolving forward declaration...",
MakeUserID(die->GetOffset()),
DW_TAG_value_to_name(tag),
type->GetName().AsCString());
if (log->GetVerbose())
{
StreamString strm;
Host::Backtrace (strm, 1024);
if (strm.GetData())
log->PutCString(strm.GetData());
}
}
assert (clang_type);
DWARFDebugInfoEntry::Attributes attributes;
ClangASTContext &ast = GetClangASTContext();
switch (tag)
{
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_class_type:
{
LayoutInfo layout_info;
{
if (die->HasChildren())
{
LanguageType class_language = eLanguageTypeUnknown;
bool is_objc_class = ClangASTContext::IsObjCClassType (clang_type);
if (is_objc_class)
{
class_language = eLanguageTypeObjC;
// For objective C we don't start the definition when
// the class is created.
ast.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(GetCompUnitForDWARFCompUnit(dwarf_cu));
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;
ParseChildMembers (sc,
dwarf_cu,
die,
clang_type,
class_language,
base_classes,
member_accessibilities,
member_function_dies,
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)
{
ResolveType(dwarf_cu, member_function_dies.GetDIEPtrAtIndex(i));
}
}
if (class_language == eLanguageTypeObjC)
{
std::string class_str (ClangASTType::GetTypeNameForOpaqueQualType(ast.getASTContext(), clang_type));
if (!class_str.empty())
{
DIEArray method_die_offsets;
if (m_using_apple_tables)
{
if (m_apple_objc_ap.get())
m_apple_objc_ap->FindByName(class_str.c_str(), method_die_offsets);
}
else
{
if (!m_indexed)
Index ();
ConstString class_name (class_str.c_str());
m_objc_class_selectors_index.Find (class_name, method_die_offsets);
}
if (!method_die_offsets.empty())
{
DWARFDebugInfo* debug_info = DebugInfo();
DWARFCompileUnit* method_cu = NULL;
const size_t num_matches = method_die_offsets.size();
for (size_t i=0; i<num_matches; ++i)
{
const dw_offset_t die_offset = method_die_offsets[i];
DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu);
if (method_die)
ResolveType (method_cu, method_die);
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n",
die_offset, class_str.c_str());
}
}
}
}
}
}
// 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)
ast.SetTagTypeKind (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.
ast.SetDefaultAccessForRecordFields (clang_type,
eAccessPrivate,
&member_accessibilities.front(),
member_accessibilities.size());
}
if (!base_classes.empty())
{
ast.SetBaseClassesForClassType (clang_type,
&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());
}
}
}
ast.BuildIndirectFields (clang_type);
ast.CompleteTagDeclarationDefinition (clang_type);
if (!layout_info.field_offsets.empty())
{
if (type)
layout_info.bit_size = type->GetByteSize() * 8;
if (layout_info.bit_size == 0)
layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_byte_size, 0) * 8;
clang::QualType qual_type(clang::QualType::getFromOpaquePtr(clang_type));
const clang::RecordType *record_type = clang::dyn_cast<clang::RecordType>(qual_type.getTypePtr());
if (record_type)
{
const clang::RecordDecl *record_decl = record_type->getDecl();
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) caching layout info for record_decl = %p, bit_size = %llu, alignment = %llu, field_offsets[%u], base_offsets[0], vbase_offsets[0])",
clang_type,
record_decl,
layout_info.bit_size,
layout_info.alignment,
(uint32_t)layout_info.field_offsets.size());
llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end();
for (pos = layout_info.field_offsets.begin(); pos != end; ++pos)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field = { bit_offset=%u, name='%s' }",
clang_type,
(uint32_t)pos->second,
pos->first->getNameAsString().c_str());
}
}
m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info));
}
}
}
return clang_type;
case DW_TAG_enumeration_type:
ast.StartTagDeclarationDefinition (clang_type);
if (die->HasChildren())
{
SymbolContext sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
ParseChildEnumerators(sc, clang_type, type->GetByteSize(), dwarf_cu, die);
}
ast.CompleteTagDeclarationDefinition (clang_type);
return clang_type;
default:
assert(false && "not a forward clang type decl!");
break;
}
return NULL;
}
Type*
SymbolFileDWARF::ResolveType (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed)
{
if (type_die != NULL)
{
Type *type = m_die_to_type.lookup (type_die);
if (type == NULL)
type = GetTypeForDIE (dwarf_cu, type_die).get();
if (assert_not_being_parsed)
{
if (type != DIE_IS_BEING_PARSED)
return type;
GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s",
type_die->GetOffset(),
DW_TAG_value_to_name(type_die->Tag()),
type_die->GetName(this, dwarf_cu));
}
else
return type;
}
return NULL;
}
CompileUnit*
SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx)
{
// Check if the symbol vendor already knows about this compile unit?
if (dwarf_cu->GetUserData() == NULL)
{
// The symbol vendor doesn't know about this compile unit, we
// need to parse and add it to the symbol vendor object.
return ParseCompileUnit(dwarf_cu, cu_idx).get();
}
return (CompileUnit*)dwarf_cu->GetUserData();
}
bool
SymbolFileDWARF::GetFunction (DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc)
{
sc.Clear();
// Check if the symbol vendor already knows about this compile unit?
sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get();
if (sc.function == NULL)
sc.function = ParseCompileUnitFunction(sc, dwarf_cu, func_die);
if (sc.function)
{
sc.module_sp = sc.function->CalculateSymbolContextModule();
return true;
}
return false;
}
uint32_t
SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
{
Timer scoped_timer(__PRETTY_FUNCTION__,
"SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%llx }, resolve_scope = 0x%8.8x)",
so_addr.GetSection().get(),
so_addr.GetOffset(),
resolve_scope);
uint32_t resolved = 0;
if (resolve_scope & ( eSymbolContextCompUnit |
eSymbolContextFunction |
eSymbolContextBlock |
eSymbolContextLineEntry))
{
lldb::addr_t file_vm_addr = so_addr.GetFileAddress();
DWARFDebugInfo* debug_info = DebugInfo();
if (debug_info)
{
dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr);
if (cu_offset != DW_INVALID_OFFSET)
{
uint32_t cu_idx;
DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get();
if (dwarf_cu)
{
sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
assert(sc.comp_unit != NULL);
resolved |= eSymbolContextCompUnit;
if (resolve_scope & eSymbolContextLineEntry)
{
LineTable *line_table = sc.comp_unit->GetLineTable();
if (line_table != NULL)
{
if (so_addr.IsLinkedAddress())
{
Address linked_addr (so_addr);
linked_addr.ResolveLinkedAddress();
if (line_table->FindLineEntryByAddress (linked_addr, sc.line_entry))
{
resolved |= eSymbolContextLineEntry;
}
}
else if (line_table->FindLineEntryByAddress (so_addr, sc.line_entry))
{
resolved |= eSymbolContextLineEntry;
}
}
}
if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
{
DWARFDebugInfoEntry *function_die = NULL;
DWARFDebugInfoEntry *block_die = NULL;
if (resolve_scope & eSymbolContextBlock)
{
dwarf_cu->LookupAddress(file_vm_addr, &function_die, &block_die);
}
else
{
dwarf_cu->LookupAddress(file_vm_addr, &function_die, NULL);
}
if (function_die != NULL)
{
sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
if (sc.function == NULL)
sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
}
else
{
// We might have had a compile unit that had discontiguous
// address ranges where the gaps are symbols that don't have
// any debug info. Discontiguous compile unit address ranges
// should only happen when there aren't other functions from
// other compile units in these gaps. This helps keep the size
// of the aranges down.
sc.comp_unit = NULL;
resolved &= ~eSymbolContextCompUnit;
}
if (sc.function != NULL)
{
resolved |= eSymbolContextFunction;
if (resolve_scope & eSymbolContextBlock)
{
Block& block = sc.function->GetBlock (true);
if (block_die != NULL)
sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
else
sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
if (sc.block)
resolved |= eSymbolContextBlock;
}
}
}
}
}
}
}
return resolved;
}
uint32_t
SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
{
const uint32_t prev_size = sc_list.GetSize();
if (resolve_scope & eSymbolContextCompUnit)
{
DWARFDebugInfo* debug_info = DebugInfo();
if (debug_info)
{
uint32_t cu_idx;
DWARFCompileUnit* dwarf_cu = NULL;
for (cu_idx = 0; (dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx)
{
CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Compare(file_spec, *dc_cu, false) == 0;
if (check_inlines || file_spec_matches_cu_file_spec)
{
SymbolContext sc (m_obj_file->GetModule());
sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, cu_idx);
assert(sc.comp_unit != NULL);
uint32_t file_idx = UINT32_MAX;
// If we are looking for inline functions only and we don't
// find it in the support files, we are done.
if (check_inlines)
{
file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
if (file_idx == UINT32_MAX)
continue;
}
if (line != 0)
{
LineTable *line_table = sc.comp_unit->GetLineTable();
if (line_table != NULL && line != 0)
{
// We will have already looked up the file index if
// we are searching for inline entries.
if (!check_inlines)
file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true);
if (file_idx != UINT32_MAX)
{
uint32_t found_line;
uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry);
found_line = sc.line_entry.line;
while (line_idx != UINT32_MAX)
{
sc.function = NULL;
sc.block = NULL;
if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock))
{
const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress();
if (file_vm_addr != LLDB_INVALID_ADDRESS)
{
DWARFDebugInfoEntry *function_die = NULL;
DWARFDebugInfoEntry *block_die = NULL;
dwarf_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL);
if (function_die != NULL)
{
sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get();
if (sc.function == NULL)
sc.function = ParseCompileUnitFunction(sc, dwarf_cu, function_die);
}
if (sc.function != NULL)
{
Block& block = sc.function->GetBlock (true);
if (block_die != NULL)
sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset()));
else
sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset()));
}
}
}
sc_list.Append(sc);
line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry);
}
}
}
else if (file_spec_matches_cu_file_spec && !check_inlines)
{
// only append the context if we aren't looking for inline call sites
// by file and line and if the file spec matches that of the compile unit
sc_list.Append(sc);
}
}
else if (file_spec_matches_cu_file_spec && !check_inlines)
{
// only append the context if we aren't looking for inline call sites
// by file and line and if the file spec matches that of the compile unit
sc_list.Append(sc);
}
if (!check_inlines)
break;
}
}
}
}
return sc_list.GetSize() - prev_size;
}
void
SymbolFileDWARF::Index ()
{
if (m_indexed)
return;
m_indexed = true;
Timer scoped_timer (__PRETTY_FUNCTION__,
"SymbolFileDWARF::Index (%s)",
GetObjectFile()->GetFileSpec().GetFilename().AsCString());
DWARFDebugInfo* debug_info = DebugInfo();
if (debug_info)
{
uint32_t cu_idx = 0;
const uint32_t num_compile_units = GetNumCompileUnits();
for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
{
DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
bool clear_dies = dwarf_cu->ExtractDIEsIfNeeded (false) > 1;
dwarf_cu->Index (cu_idx,
m_function_basename_index,
m_function_fullname_index,
m_function_method_index,
m_function_selector_index,
m_objc_class_selectors_index,
m_global_index,
m_type_index,
m_namespace_index);
// Keep memory down by clearing DIEs if this generate function
// caused them to be parsed
if (clear_dies)
dwarf_cu->ClearDIEs (true);
}
m_function_basename_index.Finalize();
m_function_fullname_index.Finalize();
m_function_method_index.Finalize();
m_function_selector_index.Finalize();
m_objc_class_selectors_index.Finalize();
m_global_index.Finalize();
m_type_index.Finalize();
m_namespace_index.Finalize();
#if defined (ENABLE_DEBUG_PRINTF)
StreamFile s(stdout, false);
s.Printf ("DWARF index for '%s/%s':",
GetObjectFile()->GetFileSpec().GetDirectory().AsCString(),
GetObjectFile()->GetFileSpec().GetFilename().AsCString());
s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s);
s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s);
s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s);
s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s);
s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s);
s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s);
s.Printf("\nTypes:\n"); m_type_index.Dump (&s);
s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s);
#endif
}
}
bool
SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl)
{
if (namespace_decl == NULL)
{
// Invalid namespace decl which means we aren't matching only things
// in this symbol file, so return true to indicate it matches this
// symbol file.
return true;
}
clang::ASTContext *namespace_ast = namespace_decl->GetASTContext();
if (namespace_ast == NULL)
return true; // No AST in the "namespace_decl", return true since it
// could then match any symbol file, including this one
if (namespace_ast == GetClangASTContext().getASTContext())
return true; // The ASTs match, return true
// The namespace AST was valid, and it does not match...
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
if (log)
GetObjectFile()->GetModule()->LogMessage(log.get(), "Valid namespace does not match symbol file");
return false;
}
bool
SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl,
DWARFCompileUnit* cu,
const DWARFDebugInfoEntry* die)
{
// No namespace specified, so the answesr i
if (namespace_decl == NULL)
return true;
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
const DWARFDebugInfoEntry *decl_ctx_die = NULL;
clang::DeclContext *die_clang_decl_ctx = GetClangDeclContextContainingDIE (cu, die, &decl_ctx_die);
if (decl_ctx_die)
{
clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl();
if (clang_namespace_decl)
{
if (decl_ctx_die->Tag() != DW_TAG_namespace)
{
if (log)
GetObjectFile()->GetModule()->LogMessage(log.get(), "Found a match, but its parent is not a namespace");
return false;
}
if (clang_namespace_decl == die_clang_decl_ctx)
return true;
else
return false;
}
else
{
// We have a namespace_decl that was not NULL but it contained
// a NULL "clang::NamespaceDecl", so this means the global namespace
// So as long the the contained decl context DIE isn't a namespace
// we should be ok.
if (decl_ctx_die->Tag() != DW_TAG_namespace)
return true;
}
}
if (log)
GetObjectFile()->GetModule()->LogMessage(log.get(), "Found a match, but its parent doesn't exist");
return false;
}
uint32_t
SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
{
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)",
name.GetCString(),
namespace_decl,
append,
max_matches);
}
if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
return 0;
DWARFDebugInfo* info = DebugInfo();
if (info == NULL)
return 0;
// If we aren't appending the results to this list, then clear the list
if (!append)
variables.Clear();
// Remember how many variables are in the list before we search in case
// we are appending the results to a variable list.
const uint32_t original_size = variables.GetSize();
DIEArray die_offsets;
if (m_using_apple_tables)
{
if (m_apple_names_ap.get())
{
const char *name_cstr = name.GetCString();
const char *base_name_start;
const char *base_name_end = NULL;
if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end))
base_name_start = name_cstr;
m_apple_names_ap->FindByName (base_name_start, die_offsets);
}
}
else
{
// Index the DWARF if we haven't already
if (!m_indexed)
Index ();
m_global_index.Find (name, die_offsets);
}
const size_t num_die_matches = die_offsets.size();
if (num_die_matches)
{
SymbolContext sc;
sc.module_sp = m_obj_file->GetModule();
assert (sc.module_sp);
DWARFDebugInfo* debug_info = DebugInfo();
DWARFCompileUnit* dwarf_cu = NULL;
const DWARFDebugInfoEntry* die = NULL;
bool done = false;
for (size_t i=0; i<num_die_matches && !done; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die)
{
switch (die->Tag())
{
default:
case DW_TAG_subprogram:
case DW_TAG_inlined_subroutine:
case DW_TAG_try_block:
case DW_TAG_catch_block:
break;
case DW_TAG_variable:
{
sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
assert(sc.comp_unit != NULL);
if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
continue;
ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
if (variables.GetSize() - original_size >= max_matches)
done = true;
}
break;
}
}
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n",
die_offset, name.GetCString());
}
}
}
}
// Return the number of variable that were appended to the list
const uint32_t num_matches = variables.GetSize() - original_size;
if (log && num_matches > 0)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables) => %u",
name.GetCString(),
namespace_decl,
append,
max_matches,
num_matches);
}
return num_matches;
}
uint32_t
SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
{
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)",
regex.GetText(),
append,
max_matches);
}
DWARFDebugInfo* info = DebugInfo();
if (info == NULL)
return 0;
// If we aren't appending the results to this list, then clear the list
if (!append)
variables.Clear();
// Remember how many variables are in the list before we search in case
// we are appending the results to a variable list.
const uint32_t original_size = variables.GetSize();
DIEArray die_offsets;
if (m_using_apple_tables)
{
if (m_apple_names_ap.get())
{
DWARFMappedHash::DIEInfoArray hash_data_array;
if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
}
}
else
{
// Index the DWARF if we haven't already
if (!m_indexed)
Index ();
m_global_index.Find (regex, die_offsets);
}
SymbolContext sc;
sc.module_sp = m_obj_file->GetModule();
assert (sc.module_sp);
DWARFCompileUnit* dwarf_cu = NULL;
const DWARFDebugInfoEntry* die = NULL;
const size_t num_matches = die_offsets.size();
if (num_matches)
{
DWARFDebugInfo* debug_info = DebugInfo();
for (size_t i=0; i<num_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die)
{
sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables);
if (variables.GetSize() - original_size >= max_matches)
break;
}
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n",
die_offset, regex.GetText());
}
}
}
}
// Return the number of variable that were appended to the list
return variables.GetSize() - original_size;
}
bool
SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset,
DWARFCompileUnit *&dwarf_cu,
SymbolContextList& sc_list)
{
const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
return ResolveFunction (dwarf_cu, die, sc_list);
}
bool
SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu,
const DWARFDebugInfoEntry *die,
SymbolContextList& sc_list)
{
SymbolContext sc;
if (die == NULL)
return false;
// If we were passed a die that is not a function, just return false...
if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine)
return false;
const DWARFDebugInfoEntry* inlined_die = NULL;
if (die->Tag() == DW_TAG_inlined_subroutine)
{
inlined_die = die;
while ((die = die->GetParent()) != NULL)
{
if (die->Tag() == DW_TAG_subprogram)
break;
}
}
assert (die->Tag() == DW_TAG_subprogram);
if (GetFunction (cu, die, sc))
{
Address addr;
// Parse all blocks if needed
if (inlined_die)
{
sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset()));
assert (sc.block != NULL);
if (sc.block->GetStartAddress (addr) == false)
addr.Clear();
}
else
{
sc.block = NULL;
addr = sc.function->GetAddressRange().GetBaseAddress();
}
if (addr.IsValid())
{
sc_list.Append(sc);
return true;
}
}
return false;
}
void
SymbolFileDWARF::FindFunctions (const ConstString &name,
const NameToDIE &name_to_die,
SymbolContextList& sc_list)
{
DIEArray die_offsets;
if (name_to_die.Find (name, die_offsets))
{
ParseFunctions (die_offsets, sc_list);
}
}
void
SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
const NameToDIE &name_to_die,
SymbolContextList& sc_list)
{
DIEArray die_offsets;
if (name_to_die.Find (regex, die_offsets))
{
ParseFunctions (die_offsets, sc_list);
}
}
void
SymbolFileDWARF::FindFunctions (const RegularExpression &regex,
const DWARFMappedHash::MemoryTable &memory_table,
SymbolContextList& sc_list)
{
DIEArray die_offsets;
DWARFMappedHash::DIEInfoArray hash_data_array;
if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array))
{
DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
ParseFunctions (die_offsets, sc_list);
}
}
void
SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets,
SymbolContextList& sc_list)
{
const size_t num_matches = die_offsets.size();
if (num_matches)
{
SymbolContext sc;
DWARFCompileUnit* dwarf_cu = NULL;
for (size_t i=0; i<num_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
ResolveFunction (die_offset, dwarf_cu, sc_list);
}
}
}
bool
SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die,
const DWARFCompileUnit *dwarf_cu,
uint32_t name_type_mask,
const char *partial_name,
const char *base_name_start,
const char *base_name_end)
{
// If we are looking only for methods, throw away all the ones that aren't in C++ classes:
if (name_type_mask == eFunctionNameTypeMethod
|| name_type_mask == eFunctionNameTypeBase)
{
clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset());
if (!containing_decl_ctx)
return false;
bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind());
if (!is_cxx_method && name_type_mask == eFunctionNameTypeMethod)
return false;
if (is_cxx_method && name_type_mask == eFunctionNameTypeBase)
return false;
}
// Now we need to check whether the name we got back for this type matches the extra specifications
// that were in the name we're looking up:
if (base_name_start != partial_name || *base_name_end != '\0')
{
// First see if the stuff to the left matches the full name. To do that let's see if
// we can pull out the mips linkage name attribute:
Mangled best_name;
DWARFDebugInfoEntry::Attributes attributes;
die->GetAttributes(this, dwarf_cu, NULL, attributes);
uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name);
if (idx != UINT32_MAX)
{
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, idx, form_value))
{
const char *name = form_value.AsCString(&get_debug_str_data());
best_name.SetValue (name, true);
}
}
if (best_name)
{
const char *demangled = best_name.GetDemangledName().GetCString();
if (demangled)
{
std::string name_no_parens(partial_name, base_name_end - partial_name);
const char *partial_in_demangled = strstr (demangled, name_no_parens.c_str());
if (partial_in_demangled == NULL)
return false;
else
{
// Sort out the case where our name is something like "Process::Destroy" and the match is
// "SBProcess::Destroy" - that shouldn't be a match. We should really always match on
// namespace boundaries...
if (partial_name[0] == ':' && partial_name[1] == ':')
{
// The partial name was already on a namespace boundary so all matches are good.
return true;
}
else if (partial_in_demangled == demangled)
{
// They both start the same, so this is an good match.
return true;
}
else
{
if (partial_in_demangled - demangled == 1)
{
// Only one character difference, can't be a namespace boundary...
return false;
}
else if (*(partial_in_demangled - 1) == ':' && *(partial_in_demangled - 2) == ':')
{
// We are on a namespace boundary, so this is also good.
return true;
}
else
return false;
}
}
}
}
}
return true;
}
uint32_t
SymbolFileDWARF::FindFunctions (const ConstString &name,
const lldb_private::ClangNamespaceDecl *namespace_decl,
uint32_t name_type_mask,
bool include_inlines,
bool append,
SymbolContextList& sc_list)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"SymbolFileDWARF::FindFunctions (name = '%s')",
name.AsCString());
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)",
name.GetCString(),
name_type_mask,
append);
}
// If we aren't appending the results to this list, then clear the list
if (!append)
sc_list.Clear();
if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
return 0;
// If name is empty then we won't find anything.
if (name.IsEmpty())
return 0;
// Remember how many sc_list are in the list before we search in case
// we are appending the results to a variable list.
const uint32_t original_size = sc_list.GetSize();
const char *name_cstr = name.GetCString();
uint32_t effective_name_type_mask = eFunctionNameTypeNone;
const char *base_name_start = name_cstr;
const char *base_name_end = name_cstr + strlen(name_cstr);
if (name_type_mask & eFunctionNameTypeAuto)
{
if (CPPLanguageRuntime::IsCPPMangledName (name_cstr))
effective_name_type_mask = eFunctionNameTypeFull;
else if (ObjCLanguageRuntime::IsPossibleObjCMethodName (name_cstr))
effective_name_type_mask = eFunctionNameTypeFull;
else
{
if (ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr))
effective_name_type_mask |= eFunctionNameTypeSelector;
if (CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end))
effective_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase);
}
}
else
{
effective_name_type_mask = name_type_mask;
if (effective_name_type_mask & eFunctionNameTypeMethod || name_type_mask & eFunctionNameTypeBase)
{
// If they've asked for a CPP method or function name and it can't be that, we don't
// even need to search for CPP methods or names.
if (!CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end))
{
effective_name_type_mask &= ~(eFunctionNameTypeMethod | eFunctionNameTypeBase);
if (effective_name_type_mask == eFunctionNameTypeNone)
return 0;
}
}
if (effective_name_type_mask & eFunctionNameTypeSelector)
{
if (!ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr))
{
effective_name_type_mask &= ~(eFunctionNameTypeSelector);
if (effective_name_type_mask == eFunctionNameTypeNone)
return 0;
}
}
}
DWARFDebugInfo* info = DebugInfo();
if (info == NULL)
return 0;
DWARFCompileUnit *dwarf_cu = NULL;
if (m_using_apple_tables)
{
if (m_apple_names_ap.get())
{
DIEArray die_offsets;
uint32_t num_matches = 0;
if (effective_name_type_mask & eFunctionNameTypeFull)
{
// If they asked for the full name, match what they typed. At some point we may
// want to canonicalize this (strip double spaces, etc. For now, we just add all the
// dies that we find by exact match.
num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
for (uint32_t i = 0; i < num_matches; i++)
{
const dw_offset_t die_offset = die_offsets[i];
const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die)
{
if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
continue;
if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
continue;
ResolveFunction (dwarf_cu, die, sc_list);
}
else
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
die_offset, name_cstr);
}
}
}
else
{
if (effective_name_type_mask & eFunctionNameTypeSelector)
{
if (namespace_decl && *namespace_decl)
return 0; // no selectors in namespaces
num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets);
// Now make sure these are actually ObjC methods. In this case we can simply look up the name,
// and if it is an ObjC method name, we're good.
for (uint32_t i = 0; i < num_matches; i++)
{
const dw_offset_t die_offset = die_offsets[i];
const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die)
{
const char *die_name = die->GetName(this, dwarf_cu);
if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name))
{
if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
continue;
ResolveFunction (dwarf_cu, die, sc_list);
}
}
else
{
GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
die_offset, name_cstr);
}
}
die_offsets.clear();
}
if (effective_name_type_mask & eFunctionNameTypeMethod
|| effective_name_type_mask & eFunctionNameTypeBase)
{
if ((effective_name_type_mask & eFunctionNameTypeMethod) &&
(namespace_decl && *namespace_decl))
return 0; // no methods in namespaces
// The apple_names table stores just the "base name" of C++ methods in the table. So we have to
// extract the base name, look that up, and if there is any other information in the name we were
// passed in we have to post-filter based on that.
// FIXME: Arrange the logic above so that we don't calculate the base name twice:
std::string base_name(base_name_start, base_name_end - base_name_start);
num_matches = m_apple_names_ap->FindByName (base_name.c_str(), die_offsets);
for (uint32_t i = 0; i < num_matches; i++)
{
const dw_offset_t die_offset = die_offsets[i];
const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die)
{
if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
continue;
if (!FunctionDieMatchesPartialName(die,
dwarf_cu,
effective_name_type_mask,
name_cstr,
base_name_start,
base_name_end))
continue;
if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
continue;
// If we get to here, the die is good, and we should add it:
ResolveFunction (dwarf_cu, die, sc_list);
}
else
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')",
die_offset, name_cstr);
}
}
die_offsets.clear();
}
}
}
}
else
{
// Index the DWARF if we haven't already
if (!m_indexed)
Index ();
if (name_type_mask & eFunctionNameTypeFull)
FindFunctions (name, m_function_fullname_index, sc_list);
std::string base_name(base_name_start, base_name_end - base_name_start);
ConstString base_name_const(base_name.c_str());
DIEArray die_offsets;
DWARFCompileUnit *dwarf_cu = NULL;
if (effective_name_type_mask & eFunctionNameTypeBase)
{
uint32_t num_base = m_function_basename_index.Find(base_name_const, die_offsets);
for (uint32_t i = 0; i < num_base; i++)
{
const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
if (die)
{
if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
continue;
if (!FunctionDieMatchesPartialName(die,
dwarf_cu,
effective_name_type_mask,
name_cstr,
base_name_start,
base_name_end))
continue;
if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
continue;
// If we get to here, the die is good, and we should add it:
ResolveFunction (dwarf_cu, die, sc_list);
}
}
die_offsets.clear();
}
if (effective_name_type_mask & eFunctionNameTypeMethod)
{
if (namespace_decl && *namespace_decl)
return 0; // no methods in namespaces
uint32_t num_base = m_function_method_index.Find(base_name_const, die_offsets);
{
for (uint32_t i = 0; i < num_base; i++)
{
const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu);
if (die)
{
if (!FunctionDieMatchesPartialName(die,
dwarf_cu,
effective_name_type_mask,
name_cstr,
base_name_start,
base_name_end))
continue;
if (!include_inlines && die->Tag() == DW_TAG_inlined_subroutine)
continue;
// If we get to here, the die is good, and we should add it:
ResolveFunction (dwarf_cu, die, sc_list);
}
}
}
die_offsets.clear();
}
if ((effective_name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl))
{
FindFunctions (name, m_function_selector_index, sc_list);
}
}
// Return the number of variable that were appended to the list
const uint32_t num_matches = sc_list.GetSize() - original_size;
if (log && num_matches > 0)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list) => %u",
name.GetCString(),
name_type_mask,
append,
num_matches);
}
return num_matches;
}
uint32_t
SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"SymbolFileDWARF::FindFunctions (regex = '%s')",
regex.GetText());
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)",
regex.GetText(),
append);
}
// If we aren't appending the results to this list, then clear the list
if (!append)
sc_list.Clear();
// Remember how many sc_list are in the list before we search in case
// we are appending the results to a variable list.
uint32_t original_size = sc_list.GetSize();
if (m_using_apple_tables)
{
if (m_apple_names_ap.get())
FindFunctions (regex, *m_apple_names_ap, sc_list);
}
else
{
// Index the DWARF if we haven't already
if (!m_indexed)
Index ();
FindFunctions (regex, m_function_basename_index, sc_list);
FindFunctions (regex, m_function_fullname_index, sc_list);
}
// Return the number of variable that were appended to the list
return sc_list.GetSize() - original_size;
}
uint32_t
SymbolFileDWARF::FindTypes (const SymbolContext& sc,
const ConstString &name,
const lldb_private::ClangNamespaceDecl *namespace_decl,
bool append,
uint32_t max_matches,
TypeList& types)
{
DWARFDebugInfo* info = DebugInfo();
if (info == NULL)
return 0;
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
if (log)
{
if (namespace_decl)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list)",
name.GetCString(),
namespace_decl->GetNamespaceDecl(),
namespace_decl->GetQualifiedName().c_str(),
append,
max_matches);
}
else
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list)",
name.GetCString(),
append,
max_matches);
}
}
// If we aren't appending the results to this list, then clear the list
if (!append)
types.Clear();
if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl))
return 0;
DIEArray die_offsets;
if (m_using_apple_tables)
{
if (m_apple_types_ap.get())
{
const char *name_cstr = name.GetCString();
m_apple_types_ap->FindByName (name_cstr, die_offsets);
}
}
else
{
if (!m_indexed)
Index ();
m_type_index.Find (name, die_offsets);
}
const size_t num_die_matches = die_offsets.size();
if (num_die_matches)
{
const uint32_t initial_types_size = types.GetSize();
DWARFCompileUnit* dwarf_cu = NULL;
const DWARFDebugInfoEntry* die = NULL;
DWARFDebugInfo* debug_info = DebugInfo();
for (size_t i=0; i<num_die_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die)
{
if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die))
continue;
Type *matching_type = ResolveType (dwarf_cu, die);
if (matching_type)
{
// We found a type pointer, now find the shared pointer form our type list
types.InsertUnique (matching_type->shared_from_this());
if (types.GetSize() >= max_matches)
break;
}
}
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
die_offset, name.GetCString());
}
}
}
const uint32_t num_matches = types.GetSize() - initial_types_size;
if (log && num_matches)
{
if (namespace_decl)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(%p) \"%s\", append=%u, max_matches=%u, type_list) => %u",
name.GetCString(),
namespace_decl->GetNamespaceDecl(),
namespace_decl->GetQualifiedName().c_str(),
append,
max_matches,
num_matches);
}
else
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindTypes (sc, name=\"%s\", clang::NamespaceDecl(NULL), append=%u, max_matches=%u, type_list) => %u",
name.GetCString(),
append,
max_matches,
num_matches);
}
}
return num_matches;
}
return 0;
}
ClangNamespaceDecl
SymbolFileDWARF::FindNamespace (const SymbolContext& sc,
const ConstString &name,
const lldb_private::ClangNamespaceDecl *parent_namespace_decl)
{
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS));
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
name.GetCString());
}
if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl))
return ClangNamespaceDecl();
ClangNamespaceDecl namespace_decl;
DWARFDebugInfo* info = DebugInfo();
if (info)
{
DIEArray die_offsets;
// Index if we already haven't to make sure the compile units
// get indexed and make their global DIE index list
if (m_using_apple_tables)
{
if (m_apple_namespaces_ap.get())
{
const char *name_cstr = name.GetCString();
m_apple_namespaces_ap->FindByName (name_cstr, die_offsets);
}
}
else
{
if (!m_indexed)
Index ();
m_namespace_index.Find (name, die_offsets);
}
DWARFCompileUnit* dwarf_cu = NULL;
const DWARFDebugInfoEntry* die = NULL;
const size_t num_matches = die_offsets.size();
if (num_matches)
{
DWARFDebugInfo* debug_info = DebugInfo();
for (size_t i=0; i<num_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die)
{
if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die))
continue;
clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die);
if (clang_namespace_decl)
{
namespace_decl.SetASTContext (GetClangASTContext().getASTContext());
namespace_decl.SetNamespaceDecl (clang_namespace_decl);
break;
}
}
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n",
die_offset, name.GetCString());
}
}
}
}
}
if (log && namespace_decl.GetNamespaceDecl())
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => clang::NamespaceDecl(%p) \"%s\"",
name.GetCString(),
namespace_decl.GetNamespaceDecl(),
namespace_decl.GetQualifiedName().c_str());
}
return namespace_decl;
}
uint32_t
SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types)
{
// Remember how many sc_list are in the list before we search in case
// we are appending the results to a variable list.
uint32_t original_size = types.GetSize();
const uint32_t num_die_offsets = die_offsets.size();
// Parse all of the types we found from the pubtypes matches
uint32_t i;
uint32_t num_matches = 0;
for (i = 0; i < num_die_offsets; ++i)
{
Type *matching_type = ResolveTypeUID (die_offsets[i]);
if (matching_type)
{
// We found a type pointer, now find the shared pointer form our type list
types.InsertUnique (matching_type->shared_from_this());
++num_matches;
if (num_matches >= max_matches)
break;
}
}
// Return the number of variable that were appended to the list
return types.GetSize() - original_size;
}
size_t
SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc,
clang::DeclContext *containing_decl_ctx,
DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *parent_die,
bool skip_artificial,
bool &is_static,
TypeList* type_list,
std::vector<clang_type_t>& function_param_types,
std::vector<clang::ParmVarDecl*>& function_param_decls,
unsigned &type_quals,
ClangASTContext::TemplateParameterInfos &template_param_infos)
{
if (parent_die == NULL)
return 0;
const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
size_t arg_idx = 0;
const DWARFDebugInfoEntry *die;
for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
{
dw_tag_t tag = die->Tag();
switch (tag)
{
case DW_TAG_formal_parameter:
{
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
if (num_attributes > 0)
{
const char *name = NULL;
Declaration decl;
dw_offset_t param_type_die_offset = DW_INVALID_OFFSET;
bool is_artificial = false;
// one of None, Auto, Register, Extern, Static, PrivateExtern
clang::StorageClass storage = clang::SC_None;
uint32_t i;
for (i=0; i<num_attributes; ++i)
{
const dw_attr_t attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, 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(&get_debug_str_data()); break;
case DW_AT_type: param_type_die_offset = form_value.Reference(dwarf_cu); break;
case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break;
case DW_AT_location:
// if (form_value.BlockData())
// {
// const DataExtractor& debug_info_data = debug_info();
// uint32_t block_length = form_value.Unsigned();
// DataExtractor 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 = ResolveTypeUID (param_type_die_offset);
if (this_type)
{
uint32_t encoding_mask = this_type->GetEncodingMask();
if (encoding_mask & Type::eEncodingIsPointerUID)
{
is_static = false;
if (encoding_mask & (1u << Type::eEncodingIsConstUID))
type_quals |= clang::Qualifiers::Const;
if (encoding_mask & (1u << Type::eEncodingIsVolatileUID))
type_quals |= clang::Qualifiers::Volatile;
}
}
}
}
}
skip = true;
}
else
{
// HACK: Objective C formal parameters "self" and "_cmd"
// are not marked as artificial in the DWARF...
CompileUnit *comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX);
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 = ResolveTypeUID(param_type_die_offset);
if (type)
{
function_param_types.push_back (type->GetClangForwardType());
clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name,
type->GetClangForwardType(),
storage);
assert(param_var_decl);
function_param_decls.push_back(param_var_decl);
GetClangASTContext().SetMetadata((uintptr_t)param_var_decl, MakeUserID(die->GetOffset()));
}
}
}
arg_idx++;
}
break;
case DW_TAG_template_type_parameter:
case DW_TAG_template_value_parameter:
ParseTemplateDIE (dwarf_cu, die,template_param_infos);
break;
default:
break;
}
}
return arg_idx;
}
size_t
SymbolFileDWARF::ParseChildEnumerators
(
const SymbolContext& sc,
clang_type_t enumerator_clang_type,
uint32_t enumerator_byte_size,
DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *parent_die
)
{
if (parent_die == NULL)
return 0;
size_t enumerators_added = 0;
const DWARFDebugInfoEntry *die;
const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
{
const dw_tag_t tag = die->Tag();
if (tag == DW_TAG_enumerator)
{
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, 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(this, i, form_value))
{
switch (attr)
{
case DW_AT_const_value:
got_value = true;
enum_value = form_value.Unsigned();
break;
case DW_AT_name:
name = form_value.AsCString(&get_debug_str_data());
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)
{
GetClangASTContext().AddEnumerationValueToEnumerationType (enumerator_clang_type,
enumerator_clang_type,
decl,
name,
enum_value,
enumerator_byte_size * 8);
++enumerators_added;
}
}
}
}
return enumerators_added;
}
void
SymbolFileDWARF::ParseChildArrayInfo
(
const SymbolContext& sc,
DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *parent_die,
int64_t& first_index,
std::vector<uint64_t>& element_orders,
uint32_t& byte_stride,
uint32_t& bit_stride
)
{
if (parent_die == NULL)
return;
const DWARFDebugInfoEntry *die;
const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize());
for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling())
{
const dw_tag_t tag = die->Tag();
switch (tag)
{
case DW_TAG_enumerator:
{
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
if (num_child_attributes > 0)
{
const char *name = NULL;
bool got_value = false;
int64_t enum_value = 0;
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(this, i, form_value))
{
switch (attr)
{
case DW_AT_const_value:
got_value = true;
enum_value = form_value.Unsigned();
break;
case DW_AT_name:
name = form_value.AsCString(&get_debug_str_data());
break;
case DW_AT_description:
default:
case DW_AT_decl_file:
case DW_AT_decl_line:
case DW_AT_decl_column:
case DW_AT_sibling:
break;
}
}
}
}
}
break;
case DW_TAG_subrange_type:
{
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes);
if (num_child_attributes > 0)
{
const char *name = NULL;
bool got_value = false;
uint64_t byte_size = 0;
int64_t enum_value = 0;
uint64_t num_elements = 0;
uint64_t lower_bound = 0;
uint64_t upper_bound = 0;
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(this, i, form_value))
{
switch (attr)
{
case DW_AT_const_value:
got_value = true;
enum_value = form_value.Unsigned();
break;
case DW_AT_name:
name = form_value.AsCString(&get_debug_str_data());
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_byte_size:
byte_size = form_value.Unsigned();
break;
case DW_AT_lower_bound:
lower_bound = form_value.Unsigned();
break;
case DW_AT_upper_bound:
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 (upper_bound > lower_bound)
num_elements = upper_bound - lower_bound + 1;
if (num_elements > 0)
element_orders.push_back (num_elements);
}
}
break;
}
}
}
TypeSP
SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry* die)
{
TypeSP type_sp;
if (die != NULL)
{
assert(dwarf_cu != NULL);
Type *type_ptr = m_die_to_type.lookup (die);
if (type_ptr == NULL)
{
CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(dwarf_cu);
assert (lldb_cu);
SymbolContext sc(lldb_cu);
type_sp = ParseType(sc, dwarf_cu, die, NULL);
}
else if (type_ptr != DIE_IS_BEING_PARSED)
{
// Grab the existing type from the master types lists
type_sp = type_ptr->shared_from_this();
}
}
return type_sp;
}
clang::DeclContext *
SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset)
{
if (die_offset != DW_INVALID_OFFSET)
{
DWARFCompileUnitSP cu_sp;
const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp);
return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL);
}
return NULL;
}
clang::DeclContext *
SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset)
{
if (die_offset != DW_INVALID_OFFSET)
{
DWARFDebugInfo* debug_info = DebugInfo();
if (debug_info)
{
DWARFCompileUnitSP cu_sp;
const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp);
if (die)
return GetClangDeclContextForDIE (sc, cu_sp.get(), die);
}
}
return NULL;
}
clang::NamespaceDecl *
SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *dwarf_cu, const DWARFDebugInfoEntry *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]);
if (namespace_decl)
return namespace_decl;
else
{
const char *namespace_name = die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_name, NULL);
clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL);
namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx);
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
if (log)
{
if (namespace_name)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"ASTContext => %p: 0x%8.8llx: DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)",
GetClangASTContext().getASTContext(),
MakeUserID(die->GetOffset()),
namespace_name,
namespace_decl,
namespace_decl->getOriginalNamespace());
}
else
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"ASTContext => %p: 0x%8.8llx: DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)",
GetClangASTContext().getASTContext(),
MakeUserID(die->GetOffset()),
namespace_decl,
namespace_decl->getOriginalNamespace());
}
}
if (namespace_decl)
LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die);
return namespace_decl;
}
}
return NULL;
}
clang::DeclContext *
SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
{
clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
if (clang_decl_ctx)
return clang_decl_ctx;
// If this DIE has a specification, or an abstract origin, then trace to those.
dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
if (die_offset != DW_INVALID_OFFSET)
return GetClangDeclContextForDIEOffset (sc, die_offset);
die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
if (die_offset != DW_INVALID_OFFSET)
return GetClangDeclContextForDIEOffset (sc, die_offset);
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
if (log)
GetObjectFile()->GetModule()->LogMessage(log.get(), "SymbolFileDWARF::GetClangDeclContextForDIE (die = 0x%8.8x) %s '%s'", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), die->GetName(this, cu));
// This is the DIE we want. Parse it, then query our map.
bool assert_not_being_parsed = true;
ResolveTypeUID (cu, die, assert_not_being_parsed);
clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
return clang_decl_ctx;
}
clang::DeclContext *
SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy)
{
if (m_clang_tu_decl == NULL)
m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl();
const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
if (decl_ctx_die_copy)
*decl_ctx_die_copy = decl_ctx_die;
if (decl_ctx_die)
{
DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die);
if (pos != m_die_to_decl_ctx.end())
return pos->second;
switch (decl_ctx_die->Tag())
{
case DW_TAG_compile_unit:
return m_clang_tu_decl;
case DW_TAG_namespace:
return ResolveNamespaceDIE (cu, decl_ctx_die);
break;
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_class_type:
{
Type* type = ResolveType (cu, decl_ctx_die);
if (type)
{
clang::DeclContext *decl_ctx = ClangASTContext::GetDeclContextForType (type->GetClangForwardType ());
if (decl_ctx)
{
LinkDeclContextToDIE (decl_ctx, decl_ctx_die);
if (decl_ctx)
return decl_ctx;
}
}
}
break;
default:
break;
}
}
return m_clang_tu_decl;
}
const DWARFDebugInfoEntry *
SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
{
if (cu && die)
{
const DWARFDebugInfoEntry * const decl_die = die;
while (die != NULL)
{
// If this is the original DIE that we are searching for a declaration
// for, then don't look in the cache as we don't want our own decl
// context to be our decl context...
if (decl_die != die)
{
switch (die->Tag())
{
case DW_TAG_compile_unit:
case DW_TAG_namespace:
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_class_type:
return die;
default:
break;
}
}
dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
if (die_offset != DW_INVALID_OFFSET)
{
DWARFCompileUnit *spec_cu = cu;
const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu);
const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die);
if (spec_die_decl_ctx_die)
return spec_die_decl_ctx_die;
}
die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
if (die_offset != DW_INVALID_OFFSET)
{
DWARFCompileUnit *abs_cu = cu;
const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu);
const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die);
if (abs_die_decl_ctx_die)
return abs_die_decl_ctx_die;
}
die = die->GetParent();
}
}
return NULL;
}
Symbol *
SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name)
{
Symbol *objc_class_symbol = NULL;
if (m_obj_file)
{
Symtab *symtab = m_obj_file->GetSymtab();
if (symtab)
{
objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name,
eSymbolTypeObjCClass,
Symtab::eDebugNo,
Symtab::eVisibilityAny);
}
}
return objc_class_symbol;
}
// Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't
// then we can end up looking through all class types for a complete type and never find
// the full definition. We need to know if this attribute is supported, so we determine
// this here and cache th result. We also need to worry about the debug map DWARF file
// if we are doing darwin DWARF in .o file debugging.
bool
SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu)
{
if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate)
{
m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo;
if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type())
m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
else
{
DWARFDebugInfo* debug_info = DebugInfo();
const uint32_t num_compile_units = GetNumCompileUnits();
for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
{
DWARFCompileUnit* dwarf_cu = debug_info->GetCompileUnitAtIndex(cu_idx);
if (dwarf_cu != cu && dwarf_cu->Supports_DW_AT_APPLE_objc_complete_type())
{
m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes;
break;
}
}
}
if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && m_debug_map_symfile)
return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this);
}
return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes;
}
// This function can be used when a DIE is found that is a forward declaration
// DIE and we want to try and find a type that has the complete definition.
TypeSP
SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die,
const ConstString &type_name,
bool must_be_implementation)
{
TypeSP type_sp;
if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name)))
return type_sp;
DIEArray die_offsets;
if (m_using_apple_tables)
{
if (m_apple_types_ap.get())
{
const char *name_cstr = type_name.GetCString();
m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation);
}
}
else
{
if (!m_indexed)
Index ();
m_type_index.Find (type_name, die_offsets);
}
const size_t num_matches = die_offsets.size();
DWARFCompileUnit* type_cu = NULL;
const DWARFDebugInfoEntry* type_die = NULL;
if (num_matches)
{
DWARFDebugInfo* debug_info = DebugInfo();
for (size_t i=0; i<num_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
if (type_die)
{
bool try_resolving_type = false;
// Don't try and resolve the DIE we are looking for with the DIE itself!
if (type_die != die)
{
switch (type_die->Tag())
{
case DW_TAG_class_type:
case DW_TAG_structure_type:
try_resolving_type = true;
break;
default:
break;
}
}
if (try_resolving_type)
{
if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type())
try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0);
if (try_resolving_type)
{
Type *resolved_type = ResolveType (type_cu, type_die, false);
if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
{
DEBUG_PRINTF ("resolved 0x%8.8llx (cu 0x%8.8llx) from %s to 0x%8.8llx (cu 0x%8.8llx)\n",
MakeUserID(die->GetOffset()),
MakeUserID(dwarf_cu->GetOffset()),
m_obj_file->GetFileSpec().GetFilename().AsCString(),
MakeUserID(type_die->GetOffset()),
MakeUserID(type_cu->GetOffset()));
if (die)
m_die_to_type[die] = resolved_type;
type_sp = resolved_type->shared_from_this();
break;
}
}
}
}
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
die_offset, type_name.GetCString());
}
}
}
}
return type_sp;
}
//----------------------------------------------------------------------
// This function helps to ensure that the declaration contexts match for
// two different DIEs. Often times debug information will refer to a
// forward declaration of a type (the equivalent of "struct my_struct;".
// There will often be a declaration of that type elsewhere that has the
// full definition. When we go looking for the full type "my_struct", we
// will find one or more matches in the accelerator tables and we will
// then need to make sure the type was in the same declaration context
// as the original DIE. This function can efficiently compare two DIEs
// and will return true when the declaration context matches, and false
// when they don't.
//----------------------------------------------------------------------
bool
SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1,
DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2)
{
assert (die1 != die2);
DWARFDIECollection decl_ctx_1;
DWARFDIECollection decl_ctx_2;
//The declaration DIE stack is a stack of the declaration context
// DIEs all the way back to the compile unit. If a type "T" is
// declared inside a class "B", and class "B" is declared inside
// a class "A" and class "A" is in a namespace "lldb", and the
// namespace is in a compile unit, there will be a stack of DIEs:
//
// [0] DW_TAG_class_type for "B"
// [1] DW_TAG_class_type for "A"
// [2] DW_TAG_namespace for "lldb"
// [3] DW_TAG_compile_unit for the source file.
//
// We grab both contexts and make sure that everything matches
// all the way back to the compiler unit.
// First lets grab the decl contexts for both DIEs
die1->GetDeclContextDIEs (this, cu1, decl_ctx_1);
die2->GetDeclContextDIEs (this, cu2, decl_ctx_2);
// Make sure the context arrays have the same size, otherwise
// we are done
const size_t count1 = decl_ctx_1.Size();
const size_t count2 = decl_ctx_2.Size();
if (count1 != count2)
return false;
// Make sure the DW_TAG values match all the way back up the the
// compile unit. If they don't, then we are done.
const DWARFDebugInfoEntry *decl_ctx_die1;
const DWARFDebugInfoEntry *decl_ctx_die2;
size_t i;
for (i=0; i<count1; i++)
{
decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag())
return false;
}
#if defined LLDB_CONFIGURATION_DEBUG
// Make sure the top item in the decl context die array is always
// DW_TAG_compile_unit. If it isn't then something went wrong in
// the DWARFDebugInfoEntry::GetDeclContextDIEs() function...
assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit);
#endif
// Always skip the compile unit when comparing by only iterating up to
// "count - 1". Here we compare the names as we go.
for (i=0; i<count1 - 1; i++)
{
decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i);
decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i);
const char *name1 = decl_ctx_die1->GetName(this, cu1);
const char *name2 = decl_ctx_die2->GetName(this, cu2);
// If the string was from a DW_FORM_strp, then the pointer will often
// be the same!
if (name1 == name2)
continue;
// Name pointers are not equal, so only compare the strings
// if both are not NULL.
if (name1 && name2)
{
// If the strings don't compare, we are done...
if (strcmp(name1, name2) != 0)
return false;
}
else
{
// One name was NULL while the other wasn't
return false;
}
}
// We made it through all of the checks and the declaration contexts
// are equal.
return true;
}
// This function can be used when a DIE is found that is a forward declaration
// DIE and we want to try and find a type that has the complete definition.
TypeSP
SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu,
const DWARFDebugInfoEntry *die,
const ConstString &type_name)
{
TypeSP type_sp;
if (cu == NULL || die == NULL || !type_name)
return type_sp;
DIEArray die_offsets;
if (m_using_apple_tables)
{
if (m_apple_types_ap.get())
{
if (m_apple_types_ap->GetHeader().header_data.atoms.size() > 1)
{
m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets);
}
else
{
m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets);
}
}
}
else
{
if (!m_indexed)
Index ();
m_type_index.Find (type_name, die_offsets);
}
const size_t num_matches = die_offsets.size();
const dw_tag_t die_tag = die->Tag();
DWARFCompileUnit* type_cu = NULL;
const DWARFDebugInfoEntry* type_die = NULL;
if (num_matches)
{
DWARFDebugInfo* debug_info = DebugInfo();
for (size_t i=0; i<num_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu);
if (type_die)
{
bool try_resolving_type = false;
// Don't try and resolve the DIE we are looking for with the DIE itself!
if (type_die != die)
{
const dw_tag_t type_die_tag = type_die->Tag();
// Make sure the tags match
if (type_die_tag == die_tag)
{
// The tags match, lets try resolving this type
try_resolving_type = true;
}
else
{
// The tags don't match, but we need to watch our for a
// forward declaration for a struct and ("struct foo")
// ends up being a class ("class foo { ... };") or
// vice versa.
switch (type_die_tag)
{
case DW_TAG_class_type:
// We had a "class foo", see if we ended up with a "struct foo { ... };"
try_resolving_type = (die_tag == DW_TAG_structure_type);
break;
case DW_TAG_structure_type:
// We had a "struct foo", see if we ended up with a "class foo { ... };"
try_resolving_type = (die_tag == DW_TAG_class_type);
break;
default:
// Tags don't match, don't event try to resolve
// using this type whose name matches....
break;
}
}
}
if (try_resolving_type)
{
// Make sure the decl contexts match all the way up
if (DIEDeclContextsMatch(cu, die, type_cu, type_die))
{
Type *resolved_type = ResolveType (type_cu, type_die, false);
if (resolved_type && resolved_type != DIE_IS_BEING_PARSED)
{
DEBUG_PRINTF ("resolved 0x%8.8llx (cu 0x%8.8llx) from %s to 0x%8.8llx (cu 0x%8.8llx)\n",
MakeUserID(die->GetOffset()),
MakeUserID(dwarf_cu->GetOffset()),
m_obj_file->GetFileSpec().GetFilename().AsCString(),
MakeUserID(type_die->GetOffset()),
MakeUserID(type_cu->GetOffset()));
m_die_to_type[die] = resolved_type;
type_sp = resolved_type->shared_from_this();
break;
}
}
}
}
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n",
die_offset, type_name.GetCString());
}
}
}
}
return type_sp;
}
TypeSP
SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr)
{
TypeSP type_sp;
if (type_is_new_ptr)
*type_is_new_ptr = false;
#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
static DIEStack g_die_stack;
DIEStack::ScopedPopper scoped_die_logger(g_die_stack);
#endif
AccessType accessibility = eAccessNone;
if (die != NULL)
{
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
if (log)
{
const DWARFDebugInfoEntry *context_die;
clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die);
GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
die->GetOffset(),
context,
context_die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
die->GetName(this, dwarf_cu));
#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
scoped_die_logger.Push (dwarf_cu, die);
g_die_stack.LogDIEs(log.get(), this);
#endif
}
//
// LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
// if (log && dwarf_cu)
// {
// StreamString s;
// die->DumpLocation (this, dwarf_cu, s);
// GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData());
//
// }
Type *type_ptr = m_die_to_type.lookup (die);
TypeList* type_list = GetTypeList();
if (type_ptr == NULL)
{
ClangASTContext &ast = GetClangASTContext();
if (type_is_new_ptr)
*type_is_new_ptr = true;
const dw_tag_t tag = die->Tag();
bool is_forward_declaration = false;
DWARFDebugInfoEntry::Attributes attributes;
const char *type_name_cstr = NULL;
ConstString type_name_const_str;
Type::ResolveState resolve_state = Type::eResolveStateUnresolved;
size_t byte_size = 0;
bool byte_size_valid = false;
Declaration decl;
Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID;
clang_type_t clang_type = NULL;
dw_attr_t attr;
switch (tag)
{
case DW_TAG_base_type:
case DW_TAG_pointer_type:
case DW_TAG_reference_type:
case DW_TAG_typedef:
case DW_TAG_const_type:
case DW_TAG_restrict_type:
case DW_TAG_volatile_type:
case DW_TAG_unspecified_type:
{
// Set a bit that lets us know that we are currently parsing this
m_die_to_type[die] = DIE_IS_BEING_PARSED;
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
uint32_t encoding = 0;
lldb::user_id_t encoding_uid = LLDB_INVALID_UID;
if (num_attributes > 0)
{
uint32_t i;
for (i=0; i<num_attributes; ++i)
{
attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, 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(&get_debug_str_data());
// Work around a bug in llvm-gcc where they give a name to a reference type which doesn't
// include the "&"...
if (tag == DW_TAG_reference_type)
{
if (strchr (type_name_cstr, '&') == NULL)
type_name_cstr = NULL;
}
if (type_name_cstr)
type_name_const_str.SetCString(type_name_cstr);
break;
case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; break;
case DW_AT_encoding: encoding = form_value.Unsigned(); break;
case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break;
default:
case DW_AT_sibling:
break;
}
}
}
}
DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\") type => 0x%8.8x\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid);
switch (tag)
{
default:
break;
case DW_TAG_unspecified_type:
if (strcmp(type_name_cstr, "nullptr_t") == 0)
{
resolve_state = Type::eResolveStateFull;
clang_type = ast.getASTContext()->NullPtrTy.getAsOpaquePtr();
break;
}
// Fall through to base type below in case we can handle the type there...
case DW_TAG_base_type:
resolve_state = Type::eResolveStateFull;
clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr,
encoding,
byte_size * 8);
break;
case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break;
case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break;
case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break;
case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break;
case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break;
case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break;
}
if (clang_type == NULL && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID))
{
if (type_name_cstr != NULL && sc.comp_unit != NULL &&
(sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus))
{
static ConstString g_objc_type_name_id("id");
static ConstString g_objc_type_name_Class("Class");
static ConstString g_objc_type_name_selector("SEL");
if (type_name_const_str == g_objc_type_name_id)
{
if (log)
GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.",
die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
die->GetName(this, dwarf_cu));
clang_type = ast.GetBuiltInType_objc_id();
encoding_data_type = Type::eEncodingIsUID;
encoding_uid = LLDB_INVALID_UID;
resolve_state = Type::eResolveStateFull;
}
else if (type_name_const_str == g_objc_type_name_Class)
{
if (log)
GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.",
die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
die->GetName(this, dwarf_cu));
clang_type = ast.GetBuiltInType_objc_Class();
encoding_data_type = Type::eEncodingIsUID;
encoding_uid = LLDB_INVALID_UID;
resolve_state = Type::eResolveStateFull;
}
else if (type_name_const_str == g_objc_type_name_selector)
{
if (log)
GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.",
die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
die->GetName(this, dwarf_cu));
clang_type = ast.GetBuiltInType_objc_selector();
encoding_data_type = Type::eEncodingIsUID;
encoding_uid = LLDB_INVALID_UID;
resolve_state = Type::eResolveStateFull;
}
}
}
type_sp.reset( new Type (MakeUserID(die->GetOffset()),
this,
type_name_const_str,
byte_size,
NULL,
encoding_uid,
encoding_data_type,
&decl,
clang_type,
resolve_state));
m_die_to_type[die] = 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
m_die_to_type[die] = DIE_IS_BEING_PARSED;
LanguageType class_language = eLanguageTypeUnknown;
bool is_complete_objc_class = false;
//bool struct_is_class = false;
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
if (num_attributes > 0)
{
uint32_t i;
for (i=0; i<num_attributes; ++i)
{
attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, i, form_value))
{
switch (attr)
{
case DW_AT_decl_file:
if (dwarf_cu->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(&get_debug_str_data());
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.Unsigned() != 0;
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 unique_ast_entry;
// Only try and unique the type if it has a name.
if (type_name_const_str &&
GetUniqueDWARFASTTypeMap().Find (type_name_const_str,
this,
dwarf_cu,
die,
decl,
byte_size_valid ? byte_size : -1,
unique_ast_entry))
{
// We have already parsed this type or from another
// compile unit. GCC loves to use the "one definition
// rule" which can result in multiple definitions
// of the same class over and over in each compile
// unit.
type_sp = unique_ast_entry.m_type_sp;
if (type_sp)
{
m_die_to_type[die] = type_sp.get();
return type_sp;
}
}
DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), 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)
{
if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu))
{
// 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 = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
if (!type_sp && m_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 = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true);
}
if (type_sp)
{
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8llx",
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
m_die_to_type[die] = 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)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type",
this,
die->GetOffset(),
DW_TAG_value_to_name(tag),
type_name_cstr);
}
type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str);
if (!type_sp && m_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 = m_debug_map_symfile->FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str);
}
if (type_sp)
{
if (log)
{
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8llx",
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
m_die_to_type[die] = type_sp.get();
return type_sp;
}
}
assert (tag_decl_kind != -1);
bool clang_type_was_created = false;
clang_type = m_forward_decl_die_to_clang_type.lookup (die);
if (clang_type == NULL)
{
const DWARFDebugInfoEntry *decl_ctx_die;
clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
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 accessability.
const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind();
if (DeclKindIsCXXClass (containing_decl_kind))
accessibility = default_accessibility;
}
if (type_name_cstr && strchr (type_name_cstr, '<'))
{
ClangASTContext::TemplateParameterInfos template_param_infos;
if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos))
{
clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx,
accessibility,
type_name_cstr,
tag_decl_kind,
template_param_infos);
clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx,
class_template_decl,
tag_decl_kind,
template_param_infos);
clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl);
clang_type_was_created = true;
GetClangASTContext().SetMetadata((uintptr_t)class_template_decl, MakeUserID(die->GetOffset()));
GetClangASTContext().SetMetadata((uintptr_t)class_specialization_decl, MakeUserID(die->GetOffset()));
}
}
if (!clang_type_was_created)
{
clang_type_was_created = true;
clang::CXXRecordDecl *record_decl;
clang_type = ast.CreateRecordType (decl_ctx,
accessibility,
type_name_cstr,
tag_decl_kind,
class_language,
&record_decl);
GetClangASTContext().SetMetadata((uintptr_t)record_decl, MakeUserID(die->GetOffset()));
}
}
// 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(ClangASTContext::GetDeclContextForType(clang_type), die);
type_sp.reset (new Type (MakeUserID(die->GetOffset()),
this,
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.m_type_sp = type_sp;
unique_ast_entry.m_symfile = this;
unique_ast_entry.m_cu = dwarf_cu;
unique_ast_entry.m_die = die;
unique_ast_entry.m_declaration = decl;
unique_ast_entry.m_byte_size = byte_size;
GetUniqueDWARFASTTypeMap().Insert (type_name_const_str,
unique_ast_entry);
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
ast.StartTagDeclarationDefinition (clang_type);
ast.CompleteTagDeclarationDefinition (clang_type);
}
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 dont' respond to isCompleteDefinition() so we can't
// start the declaration definition right away. For C++ classs/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)
ast.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::ResolveClangOpaqueTypeDefinition(Type *)"
// When the definition needs to be defined.
m_forward_decl_die_to_clang_type[die] = clang_type;
m_forward_decl_clang_type_to_die[ClangASTType::RemoveFastQualifiers (clang_type)] = die;
ClangASTContext::SetHasExternalStorage (clang_type, true);
}
}
}
break;
case DW_TAG_enumeration_type:
{
// Set a bit that lets us know that we are currently parsing this
m_die_to_type[die] = DIE_IS_BEING_PARSED;
lldb::user_id_t encoding_uid = DW_INVALID_OFFSET;
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
if (num_attributes > 0)
{
uint32_t i;
for (i=0; i<num_attributes; ++i)
{
attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, 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(&get_debug_str_data());
type_name_const_str.SetCString(type_name_cstr);
break;
case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); 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.Unsigned() != 0; break;
case DW_AT_allocated:
case DW_AT_associated:
case DW_AT_bit_stride:
case DW_AT_byte_stride:
case DW_AT_data_location:
case DW_AT_description:
case DW_AT_start_scope:
case DW_AT_visibility:
case DW_AT_specification:
case DW_AT_abstract_origin:
case DW_AT_sibling:
break;
}
}
}
DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
clang_type_t enumerator_clang_type = NULL;
clang_type = m_forward_decl_die_to_clang_type.lookup (die);
if (clang_type == NULL)
{
enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL,
DW_ATE_signed,
byte_size * 8);
clang_type = ast.CreateEnumerationType (type_name_cstr,
GetClangDeclContextContainingDIE (dwarf_cu, die, NULL),
decl,
enumerator_clang_type);
}
else
{
enumerator_clang_type = ClangASTContext::GetEnumerationIntegerType (clang_type);
assert (enumerator_clang_type != NULL);
}
LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die);
type_sp.reset( new Type (MakeUserID(die->GetOffset()),
this,
type_name_const_str,
byte_size,
NULL,
encoding_uid,
Type::eEncodingIsUID,
&decl,
clang_type,
Type::eResolveStateForward));
ast.StartTagDeclarationDefinition (clang_type);
if (die->HasChildren())
{
SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu));
ParseChildEnumerators(cu_sc, clang_type, type_sp->GetByteSize(), dwarf_cu, die);
}
ast.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
m_die_to_type[die] = DIE_IS_BEING_PARSED;
const char *mangled = NULL;
dw_offset_t type_die_offset = DW_INVALID_OFFSET;
bool is_variadic = false;
bool is_inline = false;
bool is_static = false;
bool is_virtual = false;
bool is_explicit = false;
bool is_artificial = false;
dw_offset_t specification_die_offset = DW_INVALID_OFFSET;
dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET;
unsigned type_quals = 0;
clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
if (num_attributes > 0)
{
uint32_t i;
for (i=0; i<num_attributes; ++i)
{
attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, 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(&get_debug_str_data());
type_name_const_str.SetCString(type_name_cstr);
break;
case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break;
case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break;
case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; break;
case DW_AT_inline: is_inline = form_value.Unsigned() != 0; break;
case DW_AT_virtuality: is_virtual = form_value.Unsigned() != 0; break;
case DW_AT_explicit: is_explicit = form_value.Unsigned() != 0; break;
case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break;
case DW_AT_external:
if (form_value.Unsigned())
{
if (storage == clang::SC_None)
storage = clang::SC_Extern;
else
storage = clang::SC_PrivateExtern;
}
break;
case DW_AT_specification:
specification_die_offset = form_value.Reference(dwarf_cu);
break;
case DW_AT_abstract_origin:
abstract_origin_die_offset = form_value.Reference(dwarf_cu);
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_object_pointer:
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;
}
}
}
}
DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
clang_type_t return_clang_type = NULL;
Type *func_type = NULL;
if (type_die_offset != DW_INVALID_OFFSET)
func_type = ResolveTypeUID(type_die_offset);
if (func_type)
return_clang_type = func_type->GetClangForwardType();
else
return_clang_type = ast.GetBuiltInType_void();
std::vector<clang_type_t> function_param_types;
std::vector<clang::ParmVarDecl*> function_param_decls;
// Parse the function children for the parameters
const DWARFDebugInfoEntry *decl_ctx_die = NULL;
clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die);
const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind();
const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind);
// Start off static. This will be set to false in ParseChildParameters(...)
// if we find a "this" paramters as the first parameter
if (is_cxx_method)
is_static = true;
ClangASTContext::TemplateParameterInfos template_param_infos;
if (die->HasChildren())
{
bool skip_artificial = true;
ParseChildParameters (sc,
containing_decl_ctx,
dwarf_cu,
die,
skip_artificial,
is_static,
type_list,
function_param_types,
function_param_decls,
type_quals,
template_param_infos);
}
// clang_type will get the function prototype clang type after this call
clang_type = ast.CreateFunctionType (return_clang_type,
&function_param_types[0],
function_param_types.size(),
is_variadic,
type_quals);
if (type_name_cstr)
{
bool type_handled = false;
if (tag == DW_TAG_subprogram)
{
ConstString class_name;
ConstString class_name_no_category;
if (ObjCLanguageRuntime::ParseMethodName (type_name_cstr, &class_name, NULL, NULL, &class_name_no_category))
{
// Use the class name with no category if there is one
if (class_name_no_category)
class_name = class_name_no_category;
SymbolContext empty_sc;
clang_type_t class_opaque_type = NULL;
if (class_name)
{
TypeList types;
TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false));
if (complete_objc_class_type_sp)
{
clang_type_t type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType();
if (ClangASTContext::IsObjCClassType (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;
objc_method_decl = ast.AddMethodToObjCObjectType (class_opaque_type,
type_name_cstr,
clang_type,
accessibility);
LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die);
type_handled = objc_method_decl != NULL;
GetClangASTContext().SetMetadata((uintptr_t)objc_method_decl, MakeUserID(die->GetOffset()));
}
}
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 = ResolveType (dwarf_cu, decl_ctx_die);
if (class_type)
{
if (specification_die_offset != DW_INVALID_OFFSET)
{
// We have a specification which we are going to base our function
// prototype off of, so we need this type to be completed so that the
// m_die_to_decl_ctx for the method in the specification has a valid
// clang decl context.
class_type->GetClangForwardType();
// If we have a specification, then the function type should have been
// made with the specification and not with this die.
DWARFCompileUnitSP spec_cu_sp;
const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp);
clang::DeclContext *spec_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, spec_die);
if (spec_clang_decl_ctx)
{
LinkDeclContextToDIE(spec_clang_decl_ctx, die);
}
else
{
GetObjectFile()->GetModule()->ReportWarning ("0x%8.8llx: DW_AT_specification(0x%8.8x) has no decl\n",
MakeUserID(die->GetOffset()),
specification_die_offset);
}
type_handled = true;
}
else if (abstract_origin_die_offset != DW_INVALID_OFFSET)
{
// We have a specification which we are going to base our function
// prototype off of, so we need this type to be completed so that the
// m_die_to_decl_ctx for the method in the abstract origin has a valid
// clang decl context.
class_type->GetClangForwardType();
DWARFCompileUnitSP abs_cu_sp;
const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp);
clang::DeclContext *abs_clang_decl_ctx = GetClangDeclContextForDIE (sc, dwarf_cu, abs_die);
if (abs_clang_decl_ctx)
{
LinkDeclContextToDIE (abs_clang_decl_ctx, die);
}
else
{
GetObjectFile()->GetModule()->ReportWarning ("0x%8.8llx: DW_AT_abstract_origin(0x%8.8x) has no decl\n",
MakeUserID(die->GetOffset()),
abstract_origin_die_offset);
}
type_handled = true;
}
else
{
clang_type_t class_opaque_type = class_type->GetClangForwardType();
if (ClangASTContext::IsCXXClassType (class_opaque_type))
{
if (ClangASTContext::IsBeingDefined (class_opaque_type))
{
// Neither GCC 4.2 nor clang++ currently set a valid accessibility
// in the DWARF for C++ methods... Default to public for now...
if (accessibility == eAccessNone)
accessibility = eAccessPublic;
if (!is_static && !die->HasChildren())
{
// We have a C++ member function with no children (this pointer!)
// and clang will get mad if we try and make a function that isn't
// well formed in the DWARF, so we will just skip it...
type_handled = true;
}
else
{
clang::CXXMethodDecl *cxx_method_decl;
// REMOVE THE CRASH DESCRIPTION BELOW
Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8llx from %s/%s",
type_name_cstr,
class_type->GetName().GetCString(),
MakeUserID(die->GetOffset()),
m_obj_file->GetFileSpec().GetDirectory().GetCString(),
m_obj_file->GetFileSpec().GetFilename().GetCString());
const bool is_attr_used = false;
cxx_method_decl = ast.AddMethodToCXXRecordType (class_opaque_type,
type_name_cstr,
clang_type,
accessibility,
is_virtual,
is_static,
is_inline,
is_explicit,
is_attr_used,
is_artificial);
LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die);
Host::SetCrashDescription (NULL);
type_handled = cxx_method_decl != NULL;
GetClangASTContext().SetMetadata((uintptr_t)cxx_method_decl, MakeUserID(die->GetOffset()));
}
}
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 m_die_to_type map. First
// we need to modify the m_die_to_type so it doesn't think we are
// trying to parse this DIE anymore...
m_die_to_type[die] = 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->GetClangFullType();
// The type for this DIE should have been filled in the function call above
type_ptr = m_die_to_type[die];
if (type_ptr)
{
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)
{
// We just have a function that isn't part of a class
clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (containing_decl_ctx,
type_name_cstr,
clang_type,
storage,
is_inline);
// if (template_param_infos.GetSize() > 0)
// {
// clang::FunctionTemplateDecl *func_template_decl = ast.CreateFunctionTemplateDecl (containing_decl_ctx,
// function_decl,
// type_name_cstr,
// template_param_infos);
//
// ast.CreateFunctionTemplateSpecializationInfo (function_decl,
// func_template_decl,
// template_param_infos);
// }
// Add the decl to our DIE to decl context map
assert (function_decl);
LinkDeclContextToDIE(function_decl, die);
if (!function_param_decls.empty())
ast.SetFunctionParameters (function_decl,
&function_param_decls.front(),
function_param_decls.size());
GetClangASTContext().SetMetadata((uintptr_t)function_decl, MakeUserID(die->GetOffset()));
}
}
type_sp.reset( new Type (MakeUserID(die->GetOffset()),
this,
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
m_die_to_type[die] = DIE_IS_BEING_PARSED;
lldb::user_id_t type_die_offset = DW_INVALID_OFFSET;
int64_t first_index = 0;
uint32_t byte_stride = 0;
uint32_t bit_stride = 0;
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
if (num_attributes > 0)
{
uint32_t i;
for (i=0; i<num_attributes; ++i)
{
attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, 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(&get_debug_str_data());
type_name_const_str.SetCString(type_name_cstr);
break;
case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break;
case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; 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_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; 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%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr);
Type *element_type = ResolveTypeUID(type_die_offset);
if (element_type)
{
std::vector<uint64_t> element_orders;
ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride);
// We have an array that claims to have no members, lets give it at least one member...
if (element_orders.empty())
element_orders.push_back (1);
if (byte_stride == 0 && bit_stride == 0)
byte_stride = element_type->GetByteSize();
clang_type_t array_element_type = element_type->GetClangForwardType();
uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride;
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 = ast.CreateArrayType (array_element_type,
num_elements,
num_elements * array_element_bit_stride);
array_element_type = clang_type;
array_element_bit_stride = array_element_bit_stride * num_elements;
}
ConstString empty_name;
type_sp.reset( new Type (MakeUserID(die->GetOffset()),
this,
empty_name,
array_element_bit_stride / 8,
NULL,
type_die_offset,
Type::eEncodingIsUID,
&decl,
clang_type,
Type::eResolveStateFull));
type_sp->SetEncodingType (element_type);
}
}
}
break;
case DW_TAG_ptr_to_member_type:
{
dw_offset_t type_die_offset = DW_INVALID_OFFSET;
dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET;
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
if (num_attributes > 0) {
uint32_t i;
for (i=0; i<num_attributes; ++i)
{
attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, i, form_value))
{
switch (attr)
{
case DW_AT_type:
type_die_offset = form_value.Reference(dwarf_cu); break;
case DW_AT_containing_type:
containing_type_die_offset = form_value.Reference(dwarf_cu); break;
}
}
}
Type *pointee_type = ResolveTypeUID(type_die_offset);
Type *class_type = ResolveTypeUID(containing_type_die_offset);
clang_type_t pointee_clang_type = pointee_type->GetClangForwardType();
clang_type_t class_clang_type = class_type->GetClangLayoutType();
clang_type = ast.CreateMemberPointerType(pointee_clang_type,
class_clang_type);
byte_size = ClangASTType::GetClangTypeBitWidth (ast.getASTContext(),
clang_type) / 8;
type_sp.reset( new Type (MakeUserID(die->GetOffset()),
this,
type_name_const_str,
byte_size,
NULL,
LLDB_INVALID_UID,
Type::eEncodingIsUID,
NULL,
clang_type,
Type::eResolveStateForward));
}
break;
}
default:
assert(false && "Unhandled type tag!");
break;
}
if (type_sp.get())
{
const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
SymbolContextScope * symbol_context_scope = NULL;
if (sc_parent_tag == DW_TAG_compile_unit)
{
symbol_context_scope = sc.comp_unit;
}
else if (sc.function != NULL)
{
symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
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);
m_die_to_type[die] = type_sp.get();
}
}
else if (type_ptr != DIE_IS_BEING_PARSED)
{
type_sp = type_ptr->shared_from_this();
}
}
return type_sp;
}
size_t
SymbolFileDWARF::ParseTypes
(
const SymbolContext& sc,
DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *die,
bool parse_siblings,
bool parse_children
)
{
size_t types_added = 0;
while (die != NULL)
{
bool type_is_new = false;
if (ParseType(sc, dwarf_cu, die, &type_is_new).get())
{
if (type_is_new)
++types_added;
}
if (parse_children && die->HasChildren())
{
if (die->Tag() == DW_TAG_subprogram)
{
SymbolContext child_sc(sc);
child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get();
types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true);
}
else
types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true);
}
if (parse_siblings)
die = die->GetSibling();
else
die = NULL;
}
return types_added;
}
size_t
SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc)
{
assert(sc.comp_unit && sc.function);
size_t functions_added = 0;
DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID());
if (dwarf_cu)
{
dw_offset_t function_die_offset = sc.function->GetID();
const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset);
if (function_die)
{
ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0);
}
}
return functions_added;
}
size_t
SymbolFileDWARF::ParseTypes (const SymbolContext &sc)
{
// At least a compile unit must be valid
assert(sc.comp_unit);
size_t types_added = 0;
DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID());
if (dwarf_cu)
{
if (sc.function)
{
dw_offset_t function_die_offset = sc.function->GetID();
const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset);
if (func_die && func_die->HasChildren())
{
types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true);
}
}
else
{
const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE();
if (dwarf_cu_die && dwarf_cu_die->HasChildren())
{
types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true);
}
}
}
return types_added;
}
size_t
SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc)
{
if (sc.comp_unit != NULL)
{
DWARFDebugInfo* info = DebugInfo();
if (info == NULL)
return 0;
uint32_t cu_idx = UINT32_MAX;
DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID(), &cu_idx).get();
if (dwarf_cu == NULL)
return 0;
if (sc.function)
{
const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID());
dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, DW_INVALID_ADDRESS);
if (func_lo_pc != DW_INVALID_ADDRESS)
{
const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true);
// Let all blocks know they have parse all their variables
sc.function->GetBlock (false).SetDidParseVariables (true, true);
return num_variables;
}
}
else if (sc.comp_unit)
{
uint32_t vars_added = 0;
VariableListSP variables (sc.comp_unit->GetVariableList(false));
if (variables.get() == NULL)
{
variables.reset(new VariableList());
sc.comp_unit->SetVariableList(variables);
DWARFCompileUnit* match_dwarf_cu = NULL;
const DWARFDebugInfoEntry* die = NULL;
DIEArray die_offsets;
if (m_using_apple_tables)
{
if (m_apple_names_ap.get())
{
DWARFMappedHash::DIEInfoArray hash_data_array;
if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(),
dwarf_cu->GetNextCompileUnitOffset(),
hash_data_array))
{
DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets);
}
}
}
else
{
// Index if we already haven't to make sure the compile units
// get indexed and make their global DIE index list
if (!m_indexed)
Index ();
m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(),
dwarf_cu->GetNextCompileUnitOffset(),
die_offsets);
}
const size_t num_matches = die_offsets.size();
if (num_matches)
{
DWARFDebugInfo* debug_info = DebugInfo();
for (size_t i=0; i<num_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu);
if (die)
{
VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS));
if (var_sp)
{
variables->AddVariableIfUnique (var_sp);
++vars_added;
}
}
else
{
if (m_using_apple_tables)
{
GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset);
}
}
}
}
}
return vars_added;
}
}
return 0;
}
VariableSP
SymbolFileDWARF::ParseVariableDIE
(
const SymbolContext& sc,
DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *die,
const lldb::addr_t func_low_pc
)
{
VariableSP var_sp (m_die_to_variable_sp[die]);
if (var_sp)
return var_sp; // Already been parsed!
const dw_tag_t tag = die->Tag();
if ((tag == DW_TAG_variable) ||
(tag == DW_TAG_constant) ||
(tag == DW_TAG_formal_parameter && sc.function))
{
DWARFDebugInfoEntry::Attributes attributes;
const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes);
if (num_attributes > 0)
{
const char *name = NULL;
const char *mangled = NULL;
Declaration decl;
uint32_t i;
lldb::user_id_t type_uid = LLDB_INVALID_UID;
DWARFExpression location;
bool is_external = false;
bool is_artificial = false;
bool location_is_const_value_data = false;
AccessType accessibility = eAccessNone;
for (i=0; i<num_attributes; ++i)
{
dw_attr_t attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
if (attributes.ExtractFormValueAtIndex(this, 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(&get_debug_str_data()); break;
case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break;
case DW_AT_type: type_uid = form_value.Reference(dwarf_cu); break;
case DW_AT_external: is_external = form_value.Unsigned() != 0; break;
case DW_AT_const_value:
location_is_const_value_data = true;
// Fall through...
case DW_AT_location:
{
if (form_value.BlockData())
{
const DataExtractor& debug_info_data = get_debug_info_data();
uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart();
uint32_t block_length = form_value.Unsigned();
location.SetOpcodeData(get_debug_info_data(), block_offset, block_length);
}
else
{
const DataExtractor& debug_loc_data = get_debug_loc_data();
const dw_offset_t debug_loc_offset = form_value.Unsigned();
size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset);
if (loc_list_length > 0)
{
location.SetOpcodeData(debug_loc_data, debug_loc_offset, loc_list_length);
assert (func_low_pc != LLDB_INVALID_ADDRESS);
location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress());
}
}
}
break;
case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break;
case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break;
case DW_AT_declaration:
case DW_AT_description:
case DW_AT_endianity:
case DW_AT_segment:
case DW_AT_start_scope:
case DW_AT_visibility:
default:
case DW_AT_abstract_origin:
case DW_AT_sibling:
case DW_AT_specification:
break;
}
}
}
if (location.IsValid())
{
ValueType scope = eValueTypeInvalid;
const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die);
dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
SymbolContextScope * symbol_context_scope = NULL;
// DWARF doesn't specify if a DW_TAG_variable is a local, global
// or static variable, so we have to do a little digging by
// looking at the location of a varaible to see if it contains
// a DW_OP_addr opcode _somewhere_ in the definition. I say
// somewhere because clang likes to combine small global variables
// into the same symbol and have locations like:
// DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus
// So if we don't have a DW_TAG_formal_parameter, we can look at
// the location to see if it contains a DW_OP_addr opcode, and
// then we can correctly classify our variables.
if (tag == DW_TAG_formal_parameter)
scope = eValueTypeVariableArgument;
else
{
bool op_error = false;
// Check if the location has a DW_OP_addr with any address value...
addr_t location_has_op_addr = false;
if (!location_is_const_value_data)
{
location_has_op_addr = location.LocationContains_DW_OP_addr (LLDB_INVALID_ADDRESS, op_error);
if (op_error)
{
StreamString strm;
location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL);
GetObjectFile()->GetModule()->ReportError ("0x%8.8x: %s has an invalid location: %s", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), strm.GetString().c_str());
}
}
if (location_has_op_addr)
{
if (is_external)
{
scope = eValueTypeVariableGlobal;
if (m_debug_map_symfile)
{
// When leaving the DWARF in the .o files on darwin,
// when we have a global variable that wasn't initialized,
// the .o file might not have allocated a virtual
// address for the global variable. In this case it will
// have created a symbol for the global variable
// that is undefined and external and the value will
// be the byte size of the variable. When we do the
// address map in SymbolFileDWARFDebugMap we rely on
// having an address, we need to do some magic here
// so we can get the correct address for our global
// variable. The address for all of these entries
// will be zero, and there will be an undefined symbol
// in this object file, and the executable will have
// a matching symbol with a good address. So here we
// dig up the correct address and replace it in the
// location for the variable, and set the variable's
// symbol context scope to be that of the main executable
// so the file address will resolve correctly.
if (location.LocationContains_DW_OP_addr (0, op_error))
{
// we have a possible uninitialized extern global
Symtab *symtab = m_obj_file->GetSymtab();
if (symtab)
{
ConstString const_name(name);
Symbol *undefined_symbol = symtab->FindFirstSymbolWithNameAndType (const_name,
eSymbolTypeUndefined,
Symtab::eDebugNo,
Symtab::eVisibilityExtern);
if (undefined_symbol)
{
ObjectFile *debug_map_objfile = m_debug_map_symfile->GetObjectFile();
if (debug_map_objfile)
{
Symtab *debug_map_symtab = debug_map_objfile->GetSymtab();
Symbol *defined_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name,
eSymbolTypeData,
Symtab::eDebugYes,
Symtab::eVisibilityExtern);
if (defined_symbol)
{
if (defined_symbol->ValueIsAddress())
{
const addr_t defined_addr = defined_symbol->GetAddress().GetFileAddress();
if (defined_addr != LLDB_INVALID_ADDRESS)
{
if (location.Update_DW_OP_addr (defined_addr))
{
symbol_context_scope = defined_symbol;
}
}
}
}
}
}
}
}
}
}
else
{
scope = eValueTypeVariableStatic;
}
}
else
{
scope = eValueTypeVariableLocal;
}
}
if (symbol_context_scope == NULL)
{
switch (parent_tag)
{
case DW_TAG_subprogram:
case DW_TAG_inlined_subroutine:
case DW_TAG_lexical_block:
if (sc.function)
{
symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
if (symbol_context_scope == NULL)
symbol_context_scope = sc.function;
}
break;
default:
symbol_context_scope = sc.comp_unit;
break;
}
}
if (symbol_context_scope)
{
var_sp.reset (new Variable (MakeUserID(die->GetOffset()),
name,
mangled,
SymbolFileTypeSP (new SymbolFileType(*this, type_uid)),
scope,
symbol_context_scope,
&decl,
location,
is_external,
is_artificial));
var_sp->SetLocationIsConstantValueData (location_is_const_value_data);
}
else
{
// Not ready to parse this variable yet. It might be a global
// or static variable that is in a function scope and the function
// in the symbol context wasn't filled in yet
return var_sp;
}
}
}
// Cache var_sp even if NULL (the variable was just a specification or
// was missing vital information to be able to be displayed in the debugger
// (missing location due to optimization, etc)) so we don't re-parse
// this DIE over and over later...
m_die_to_variable_sp[die] = var_sp;
}
return var_sp;
}
const DWARFDebugInfoEntry *
SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset,
dw_offset_t spec_block_die_offset,
DWARFCompileUnit **result_die_cu_handle)
{
// Give the concrete function die specified by "func_die_offset", find the
// concrete block whose DW_AT_specification or DW_AT_abstract_origin points
// to "spec_block_die_offset"
DWARFDebugInfo* info = DebugInfo();
const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle);
if (die)
{
assert (*result_die_cu_handle);
return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle);
}
return NULL;
}
const DWARFDebugInfoEntry *
SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *die,
dw_offset_t spec_block_die_offset,
DWARFCompileUnit **result_die_cu_handle)
{
if (die)
{
switch (die->Tag())
{
case DW_TAG_subprogram:
case DW_TAG_inlined_subroutine:
case DW_TAG_lexical_block:
{
if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset)
{
*result_die_cu_handle = dwarf_cu;
return die;
}
if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset)
{
*result_die_cu_handle = dwarf_cu;
return die;
}
}
break;
}
// Give the concrete function die specified by "func_die_offset", find the
// concrete block whose DW_AT_specification or DW_AT_abstract_origin points
// to "spec_block_die_offset"
for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling())
{
const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu,
child_die,
spec_block_die_offset,
result_die_cu_handle);
if (result_die)
return result_die;
}
}
*result_die_cu_handle = NULL;
return NULL;
}
size_t
SymbolFileDWARF::ParseVariables
(
const SymbolContext& sc,
DWARFCompileUnit* dwarf_cu,
const lldb::addr_t func_low_pc,
const DWARFDebugInfoEntry *orig_die,
bool parse_siblings,
bool parse_children,
VariableList* cc_variable_list
)
{
if (orig_die == NULL)
return 0;
VariableListSP variable_list_sp;
size_t vars_added = 0;
const DWARFDebugInfoEntry *die = orig_die;
while (die != NULL)
{
dw_tag_t tag = die->Tag();
// Check to see if we have already parsed this variable or constant?
if (m_die_to_variable_sp[die])
{
if (cc_variable_list)
cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]);
}
else
{
// We haven't already parsed it, lets do that now.
if ((tag == DW_TAG_variable) ||
(tag == DW_TAG_constant) ||
(tag == DW_TAG_formal_parameter && sc.function))
{
if (variable_list_sp.get() == NULL)
{
const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die);
dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0;
switch (parent_tag)
{
case DW_TAG_compile_unit:
if (sc.comp_unit != NULL)
{
variable_list_sp = sc.comp_unit->GetVariableList(false);
if (variable_list_sp.get() == NULL)
{
variable_list_sp.reset(new VariableList());
sc.comp_unit->SetVariableList(variable_list_sp);
}
}
else
{
GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8llx %s with no valid compile unit in symbol context for 0x%8.8llx %s.\n",
MakeUserID(sc_parent_die->GetOffset()),
DW_TAG_value_to_name (parent_tag),
MakeUserID(orig_die->GetOffset()),
DW_TAG_value_to_name (orig_die->Tag()));
}
break;
case DW_TAG_subprogram:
case DW_TAG_inlined_subroutine:
case DW_TAG_lexical_block:
if (sc.function != NULL)
{
// Check to see if we already have parsed the variables for the given scope
Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset()));
if (block == NULL)
{
// This must be a specification or abstract origin with
// a concrete block couterpart in the current function. We need
// to find the concrete block so we can correctly add the
// variable to it
DWARFCompileUnit *concrete_block_die_cu = dwarf_cu;
const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(),
sc_parent_die->GetOffset(),
&concrete_block_die_cu);
if (concrete_block_die)
block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset()));
}
if (block != NULL)
{
const bool can_create = false;
variable_list_sp = block->GetBlockVariableList (can_create);
if (variable_list_sp.get() == NULL)
{
variable_list_sp.reset(new VariableList());
block->SetVariableList(variable_list_sp);
}
}
}
break;
default:
GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8llx %s.\n",
MakeUserID(orig_die->GetOffset()),
DW_TAG_value_to_name (orig_die->Tag()));
break;
}
}
if (variable_list_sp)
{
VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc));
if (var_sp)
{
variable_list_sp->AddVariableIfUnique (var_sp);
if (cc_variable_list)
cc_variable_list->AddVariableIfUnique (var_sp);
++vars_added;
}
}
}
}
bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram);
if (!skip_children && parse_children && die->HasChildren())
{
vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list);
}
if (parse_siblings)
die = die->GetSibling();
else
die = NULL;
}
return vars_added;
}
//------------------------------------------------------------------
// PluginInterface protocol
//------------------------------------------------------------------
const char *
SymbolFileDWARF::GetPluginName()
{
return "SymbolFileDWARF";
}
const char *
SymbolFileDWARF::GetShortPluginName()
{
return GetPluginNameStatic();
}
uint32_t
SymbolFileDWARF::GetPluginVersion()
{
return 1;
}
void
SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl)
{
SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
if (clang_type)
symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
}
void
SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl)
{
SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl);
if (clang_type)
symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type);
}
void
SymbolFileDWARF::DumpIndexes ()
{
StreamFile s(stdout, false);
s.Printf ("DWARF index for (%s) '%s/%s':",
GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(),
GetObjectFile()->GetFileSpec().GetDirectory().AsCString(),
GetObjectFile()->GetFileSpec().GetFilename().AsCString());
s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s);
s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s);
s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s);
s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s);
s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s);
s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s);
s.Printf("\nTypes:\n"); m_type_index.Dump (&s);
s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s);
}
void
SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context,
const char *name,
llvm::SmallVectorImpl <clang::NamedDecl *> *results)
{
DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context);
if (iter == m_decl_ctx_to_die.end())
return;
for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos)
{
const DWARFDebugInfoEntry *context_die = *pos;
if (!results)
return;
DWARFDebugInfo* info = DebugInfo();
DIEArray die_offsets;
DWARFCompileUnit* dwarf_cu = NULL;
const DWARFDebugInfoEntry* die = NULL;
if (m_using_apple_tables)
{
if (m_apple_types_ap.get())
m_apple_types_ap->FindByName (name, die_offsets);
}
else
{
if (!m_indexed)
Index ();
m_type_index.Find (ConstString(name), die_offsets);
}
const size_t num_matches = die_offsets.size();
if (num_matches)
{
for (size_t i = 0; i < num_matches; ++i)
{
const dw_offset_t die_offset = die_offsets[i];
die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu);
if (die->GetParent() != context_die)
continue;
Type *matching_type = ResolveType (dwarf_cu, die);
lldb::clang_type_t type = matching_type->GetClangForwardType();
clang::QualType qual_type = clang::QualType::getFromOpaquePtr(type);
if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr()))
{
clang::TagDecl *tag_decl = tag_type->getDecl();
results->push_back(tag_decl);
}
else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr()))
{
clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl();
results->push_back(typedef_decl);
}
}
}
}
}
void
SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton,
const clang::DeclContext *decl_context,
clang::DeclarationName decl_name,
llvm::SmallVectorImpl <clang::NamedDecl *> *results)
{
switch (decl_context->getDeclKind())
{
case clang::Decl::Namespace:
case clang::Decl::TranslationUnit:
{
SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results);
}
break;
default:
break;
}
}
bool
SymbolFileDWARF::LayoutRecordType (void *baton,
const clang::RecordDecl *record_decl,
uint64_t &size,
uint64_t &alignment,
llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
{
SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton;
return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets);
}
bool
SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl,
uint64_t &bit_size,
uint64_t &alignment,
llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets,
llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets)
{
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));
RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl);
bool success = false;
base_offsets.clear();
vbase_offsets.clear();
if (pos != m_record_decl_to_layout_map.end())
{
bit_size = pos->second.bit_size;
alignment = pos->second.alignment;
field_offsets.swap(pos->second.field_offsets);
m_record_decl_to_layout_map.erase(pos);
success = true;
}
else
{
bit_size = 0;
alignment = 0;
field_offsets.clear();
}
if (log)
GetObjectFile()->GetModule()->LogMessage (log.get(),
"SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %llu, alignment = %llu, field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i",
record_decl,
bit_size,
alignment,
(uint32_t)field_offsets.size(),
(uint32_t)base_offsets.size(),
(uint32_t)vbase_offsets.size(),
success);
return success;
}
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