SymbolFileSymtab.cpp [plain text]
#include "SymbolFileSymtab.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/RegularExpression.h"
#include "lldb/Core/Timer.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Symtab.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/Function.h"
using namespace lldb;
using namespace lldb_private;
void
SymbolFileSymtab::Initialize()
{
PluginManager::RegisterPlugin (GetPluginNameStatic(),
GetPluginDescriptionStatic(),
CreateInstance);
}
void
SymbolFileSymtab::Terminate()
{
PluginManager::UnregisterPlugin (CreateInstance);
}
const char *
SymbolFileSymtab::GetPluginNameStatic()
{
return "symbol-file.symtab";
}
const char *
SymbolFileSymtab::GetPluginDescriptionStatic()
{
return "Reads debug symbols from an object file's symbol table.";
}
SymbolFile*
SymbolFileSymtab::CreateInstance (ObjectFile* obj_file)
{
return new SymbolFileSymtab(obj_file);
}
SymbolFileSymtab::SymbolFileSymtab(ObjectFile* obj_file) :
SymbolFile(obj_file),
m_source_indexes(),
m_func_indexes(),
m_code_indexes(),
m_objc_class_name_to_index ()
{
}
SymbolFileSymtab::~SymbolFileSymtab()
{
}
ClangASTContext &
SymbolFileSymtab::GetClangASTContext ()
{
ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
return ast;
}
uint32_t
SymbolFileSymtab::CalculateAbilities ()
{
uint32_t abilities = 0;
if (m_obj_file)
{
const Symtab *symtab = m_obj_file->GetSymtab();
if (symtab)
{
if (symtab->AppendSymbolIndexesWithType(eSymbolTypeSourceFile, m_source_indexes))
{
abilities |= CompileUnits;
}
if (symtab->AppendSymbolIndexesWithType(eSymbolTypeCode, Symtab::eDebugYes, Symtab::eVisibilityAny, m_func_indexes))
{
symtab->SortSymbolIndexesByValue(m_func_indexes, true);
abilities |= Functions;
}
if (symtab->AppendSymbolIndexesWithType(eSymbolTypeCode, Symtab::eDebugNo, Symtab::eVisibilityAny, m_code_indexes))
{
symtab->SortSymbolIndexesByValue(m_code_indexes, true);
abilities |= Labels;
}
if (symtab->AppendSymbolIndexesWithType(eSymbolTypeData, m_data_indexes))
{
symtab->SortSymbolIndexesByValue(m_data_indexes, true);
abilities |= GlobalVariables;
}
lldb_private::Symtab::IndexCollection objc_class_indexes;
if (symtab->AppendSymbolIndexesWithType (eSymbolTypeObjCClass, objc_class_indexes))
{
abilities |= RuntimeTypes;
symtab->AppendSymbolNamesToMap (objc_class_indexes,
true,
true,
m_objc_class_name_to_index);
m_objc_class_name_to_index.Sort();
}
}
}
return abilities;
}
uint32_t
SymbolFileSymtab::GetNumCompileUnits()
{
if (m_source_indexes.empty())
return 0;
return m_source_indexes.size();
}
CompUnitSP
SymbolFileSymtab::ParseCompileUnitAtIndex(uint32_t idx)
{
CompUnitSP cu_sp;
if (idx < m_source_indexes.size())
{
const Symbol *cu_symbol = m_obj_file->GetSymtab()->SymbolAtIndex(m_source_indexes[idx]);
if (cu_symbol)
cu_sp.reset(new CompileUnit(m_obj_file->GetModule(), NULL, cu_symbol->GetMangled().GetName().AsCString(), 0, eLanguageTypeUnknown));
}
return cu_sp;
}
size_t
SymbolFileSymtab::ParseCompileUnitFunctions (const SymbolContext &sc)
{
size_t num_added = 0;
assert (sc.comp_unit != NULL);
const Symtab *symtab = m_obj_file->GetSymtab();
const Symbol *curr_symbol = NULL;
const Symbol *next_symbol = NULL;
if (m_source_indexes.empty())
{
if (!m_func_indexes.empty())
{
}
if (!m_code_indexes.empty())
{
uint32_t idx = 0; const uint32_t num_indexes = m_code_indexes.size();
for (idx = 0; idx < num_indexes; ++idx)
{
uint32_t symbol_idx = m_code_indexes[idx];
curr_symbol = symtab->SymbolAtIndex(symbol_idx);
if (curr_symbol)
{
AddressRange func_range(curr_symbol->GetValue(), 0);
if (func_range.GetBaseAddress().IsSectionOffset())
{
uint32_t symbol_size = curr_symbol->GetByteSize();
if (symbol_size != 0 && !curr_symbol->GetSizeIsSibling())
func_range.SetByteSize(symbol_size);
else if (idx + 1 < num_indexes)
{
next_symbol = symtab->SymbolAtIndex(m_code_indexes[idx + 1]);
if (next_symbol)
{
func_range.SetByteSize(next_symbol->GetValue().GetOffset() - curr_symbol->GetValue().GetOffset());
}
}
FunctionSP func_sp(new Function(sc.comp_unit,
symbol_idx, LLDB_INVALID_UID, curr_symbol->GetMangled(), NULL, func_range));
if (func_sp.get() != NULL)
{
sc.comp_unit->AddFunction(func_sp);
++num_added;
}
}
}
}
}
}
else
{
}
return num_added;
}
bool
SymbolFileSymtab::ParseCompileUnitLineTable (const SymbolContext &sc)
{
return false;
}
bool
SymbolFileSymtab::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList &support_files)
{
return false;
}
size_t
SymbolFileSymtab::ParseFunctionBlocks (const SymbolContext &sc)
{
return 0;
}
size_t
SymbolFileSymtab::ParseTypes (const SymbolContext &sc)
{
return 0;
}
size_t
SymbolFileSymtab::ParseVariablesForContext (const SymbolContext& sc)
{
return 0;
}
Type*
SymbolFileSymtab::ResolveTypeUID(lldb::user_id_t type_uid)
{
return NULL;
}
lldb::clang_type_t
SymbolFileSymtab::ResolveClangOpaqueTypeDefinition (lldb::clang_type_t clang_Type)
{
return NULL;
}
ClangNamespaceDecl
SymbolFileSymtab::FindNamespace (const SymbolContext& sc, const ConstString &name, const ClangNamespaceDecl *namespace_decl)
{
return ClangNamespaceDecl();
}
uint32_t
SymbolFileSymtab::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
{
if (m_obj_file->GetSymtab() == NULL)
return 0;
uint32_t resolved_flags = 0;
if (resolve_scope & eSymbolContextSymbol)
{
sc.symbol = m_obj_file->GetSymtab()->FindSymbolContainingFileAddress(so_addr.GetFileAddress());
if (sc.symbol)
resolved_flags |= eSymbolContextSymbol;
}
return resolved_flags;
}
uint32_t
SymbolFileSymtab::ResolveSymbolContext (const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
{
return 0;
}
uint32_t
SymbolFileSymtab::FindGlobalVariables(const ConstString &name, const ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
{
return 0;
}
uint32_t
SymbolFileSymtab::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
{
return 0;
}
uint32_t
SymbolFileSymtab::FindFunctions(const ConstString &name, const ClangNamespaceDecl *namespace_decl, uint32_t name_type_mask, bool append, SymbolContextList& sc_list)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"SymbolFileSymtab::FindFunctions (name = '%s')",
name.GetCString());
return 0;
}
uint32_t
SymbolFileSymtab::FindFunctions(const RegularExpression& regex, bool append, SymbolContextList& sc_list)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"SymbolFileSymtab::FindFunctions (regex = '%s')",
regex.GetText());
return 0;
}
static int CountMethodArgs(const char *method_signature)
{
int num_args = 0;
for (const char *colon_pos = strchr(method_signature, ':');
colon_pos != NULL;
colon_pos = strchr(colon_pos + 1, ':'))
{
num_args++;
}
return num_args;
}
uint32_t
SymbolFileSymtab::FindTypes (const lldb_private::SymbolContext& sc,
const lldb_private::ConstString &name,
const ClangNamespaceDecl *namespace_decl,
bool append,
uint32_t max_matches,
lldb_private::TypeList& types)
{
if (!append)
types.Clear();
if (!m_objc_class_name_to_index.IsEmpty())
{
TypeMap::iterator iter = m_objc_class_types.find(name);
if (iter != m_objc_class_types.end())
{
types.Insert(iter->second);
return 1;
}
const Symtab::NameToIndexMap::Entry *match = m_objc_class_name_to_index.FindFirstValueForName(name.GetCString());
if (match == NULL)
return 0;
const bool isForwardDecl = false;
const bool isInternal = true;
ClangASTContext &ast = GetClangASTContext();
lldb::clang_type_t objc_object_type = ast.CreateObjCClass (name.AsCString(),
ast.GetTranslationUnitDecl(),
isForwardDecl,
isInternal);
Declaration decl;
lldb::TypeSP type(new Type (iter->second,
this,
name,
0, NULL, 0, Type::eEncodingInvalid,
decl,
objc_object_type,
Type::eResolveStateFull));
m_objc_class_types[name] = type;
types.Insert(type);
return 1;
}
return 0;
}
const char *
SymbolFileSymtab::GetPluginName()
{
return "SymbolFileSymtab";
}
const char *
SymbolFileSymtab::GetShortPluginName()
{
return GetPluginNameStatic();
}
uint32_t
SymbolFileSymtab::GetPluginVersion()
{
return 1;
}