57ee306789
A long time ago we start with clang types that were created by the symbol files and there were many functions in lldb_private::ClangASTContext that helped. Later we create ClangASTType which contains a clang::ASTContext and an opauque QualType, but we didn't switch over to fully using it. There were a lot of places where we would pass around a raw clang_type_t and also pass along a clang::ASTContext separately. This left room for error. This checkin change all type code over to use ClangASTType everywhere and I cleaned up the interfaces quite a bit. Any code that was in ClangASTContext that was type related, was moved over into ClangASTType. All code that used these types was switched over to use all of the new goodness. llvm-svn: 186130
408 lines
12 KiB
C++
408 lines
12 KiB
C++
//===-- SymbolFileSymtab.cpp ------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "SymbolFileSymtab.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Core/RegularExpression.h"
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#include "lldb/Core/Timer.h"
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#include "lldb/Symbol/ClangExternalASTSourceCommon.h"
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#include "lldb/Symbol/CompileUnit.h"
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#include "lldb/Symbol/Function.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/Symbol.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Symbol/Symtab.h"
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#include "lldb/Symbol/TypeList.h"
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using namespace lldb;
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using namespace lldb_private;
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void
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SymbolFileSymtab::Initialize()
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{
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PluginManager::RegisterPlugin (GetPluginNameStatic(),
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GetPluginDescriptionStatic(),
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CreateInstance);
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}
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void
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SymbolFileSymtab::Terminate()
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{
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PluginManager::UnregisterPlugin (CreateInstance);
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}
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lldb_private::ConstString
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SymbolFileSymtab::GetPluginNameStatic()
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{
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static ConstString g_name("symtab");
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return g_name;
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}
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const char *
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SymbolFileSymtab::GetPluginDescriptionStatic()
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{
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return "Reads debug symbols from an object file's symbol table.";
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}
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SymbolFile*
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SymbolFileSymtab::CreateInstance (ObjectFile* obj_file)
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{
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return new SymbolFileSymtab(obj_file);
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}
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size_t
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SymbolFileSymtab::GetTypes (SymbolContextScope *sc_scope, uint32_t type_mask, lldb_private::TypeList &type_list)
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{
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return 0;
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}
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SymbolFileSymtab::SymbolFileSymtab(ObjectFile* obj_file) :
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SymbolFile(obj_file),
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m_source_indexes(),
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m_func_indexes(),
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m_code_indexes(),
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m_objc_class_name_to_index ()
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{
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}
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SymbolFileSymtab::~SymbolFileSymtab()
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{
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}
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ClangASTContext &
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SymbolFileSymtab::GetClangASTContext ()
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{
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ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext();
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return ast;
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}
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uint32_t
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SymbolFileSymtab::CalculateAbilities ()
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{
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uint32_t abilities = 0;
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if (m_obj_file)
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{
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const Symtab *symtab = m_obj_file->GetSymtab();
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if (symtab)
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{
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//----------------------------------------------------------------------
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// The snippet of code below will get the indexes the module symbol
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// table entries that are code, data, or function related (debug info),
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// sort them by value (address) and dump the sorted symbols.
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//----------------------------------------------------------------------
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if (symtab->AppendSymbolIndexesWithType(eSymbolTypeSourceFile, m_source_indexes))
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{
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abilities |= CompileUnits;
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}
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if (symtab->AppendSymbolIndexesWithType(eSymbolTypeCode, Symtab::eDebugYes, Symtab::eVisibilityAny, m_func_indexes))
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{
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symtab->SortSymbolIndexesByValue(m_func_indexes, true);
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abilities |= Functions;
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}
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if (symtab->AppendSymbolIndexesWithType(eSymbolTypeCode, Symtab::eDebugNo, Symtab::eVisibilityAny, m_code_indexes))
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{
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symtab->SortSymbolIndexesByValue(m_code_indexes, true);
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}
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if (symtab->AppendSymbolIndexesWithType(eSymbolTypeData, m_data_indexes))
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{
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symtab->SortSymbolIndexesByValue(m_data_indexes, true);
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abilities |= GlobalVariables;
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}
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lldb_private::Symtab::IndexCollection objc_class_indexes;
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if (symtab->AppendSymbolIndexesWithType (eSymbolTypeObjCClass, objc_class_indexes))
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{
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symtab->AppendSymbolNamesToMap (objc_class_indexes,
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true,
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true,
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m_objc_class_name_to_index);
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m_objc_class_name_to_index.Sort();
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}
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}
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}
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return abilities;
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}
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uint32_t
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SymbolFileSymtab::GetNumCompileUnits()
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{
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// If we don't have any source file symbols we will just have one compile unit for
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// the entire object file
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if (m_source_indexes.empty())
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return 0;
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// If we have any source file symbols we will logically orgnize the object symbols
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// using these.
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return m_source_indexes.size();
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}
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CompUnitSP
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SymbolFileSymtab::ParseCompileUnitAtIndex(uint32_t idx)
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{
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CompUnitSP cu_sp;
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// If we don't have any source file symbols we will just have one compile unit for
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// the entire object file
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if (idx < m_source_indexes.size())
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{
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const Symbol *cu_symbol = m_obj_file->GetSymtab()->SymbolAtIndex(m_source_indexes[idx]);
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if (cu_symbol)
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cu_sp.reset(new CompileUnit (m_obj_file->GetModule(), NULL, cu_symbol->GetMangled().GetName().AsCString(), 0, eLanguageTypeUnknown));
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}
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return cu_sp;
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}
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lldb::LanguageType
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SymbolFileSymtab::ParseCompileUnitLanguage (const SymbolContext& sc)
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{
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return eLanguageTypeUnknown;
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}
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size_t
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SymbolFileSymtab::ParseCompileUnitFunctions (const SymbolContext &sc)
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{
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size_t num_added = 0;
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// We must at least have a valid compile unit
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assert (sc.comp_unit != NULL);
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const Symtab *symtab = m_obj_file->GetSymtab();
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const Symbol *curr_symbol = NULL;
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const Symbol *next_symbol = NULL;
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// const char *prefix = m_obj_file->SymbolPrefix();
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// if (prefix == NULL)
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// prefix == "";
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//
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// const uint32_t prefix_len = strlen(prefix);
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// If we don't have any source file symbols we will just have one compile unit for
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// the entire object file
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if (m_source_indexes.empty())
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{
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// The only time we will have a user ID of zero is when we don't have
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// and source file symbols and we declare one compile unit for the
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// entire object file
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if (!m_func_indexes.empty())
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{
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}
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if (!m_code_indexes.empty())
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{
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// StreamFile s(stdout);
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// symtab->Dump(&s, m_code_indexes);
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uint32_t idx = 0; // Index into the indexes
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const uint32_t num_indexes = m_code_indexes.size();
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for (idx = 0; idx < num_indexes; ++idx)
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{
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uint32_t symbol_idx = m_code_indexes[idx];
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curr_symbol = symtab->SymbolAtIndex(symbol_idx);
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if (curr_symbol)
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{
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// Union of all ranges in the function DIE (if the function is discontiguous)
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AddressRange func_range(curr_symbol->GetAddress(), 0);
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if (func_range.GetBaseAddress().IsSectionOffset())
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{
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uint32_t symbol_size = curr_symbol->GetByteSize();
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if (symbol_size != 0 && !curr_symbol->GetSizeIsSibling())
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func_range.SetByteSize(symbol_size);
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else if (idx + 1 < num_indexes)
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{
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next_symbol = symtab->SymbolAtIndex(m_code_indexes[idx + 1]);
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if (next_symbol)
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{
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func_range.SetByteSize(next_symbol->GetAddress().GetOffset() - curr_symbol->GetAddress().GetOffset());
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}
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}
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FunctionSP func_sp(new Function(sc.comp_unit,
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symbol_idx, // UserID is the DIE offset
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LLDB_INVALID_UID, // We don't have any type info for this function
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curr_symbol->GetMangled(), // Linker/mangled name
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NULL, // no return type for a code symbol...
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func_range)); // first address range
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if (func_sp.get() != NULL)
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{
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sc.comp_unit->AddFunction(func_sp);
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++num_added;
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}
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}
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}
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}
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}
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}
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else
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{
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// We assume we
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}
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return num_added;
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}
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bool
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SymbolFileSymtab::ParseCompileUnitLineTable (const SymbolContext &sc)
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{
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return false;
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}
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bool
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SymbolFileSymtab::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList &support_files)
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{
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return false;
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}
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size_t
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SymbolFileSymtab::ParseFunctionBlocks (const SymbolContext &sc)
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{
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return 0;
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}
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size_t
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SymbolFileSymtab::ParseTypes (const SymbolContext &sc)
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{
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return 0;
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}
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size_t
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SymbolFileSymtab::ParseVariablesForContext (const SymbolContext& sc)
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{
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return 0;
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}
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Type*
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SymbolFileSymtab::ResolveTypeUID(lldb::user_id_t type_uid)
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{
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return NULL;
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}
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bool
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SymbolFileSymtab::ResolveClangOpaqueTypeDefinition (lldb_private::ClangASTType& clang_opaque_type)
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{
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return false;
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}
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ClangNamespaceDecl
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SymbolFileSymtab::FindNamespace (const SymbolContext& sc, const ConstString &name, const ClangNamespaceDecl *namespace_decl)
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{
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return ClangNamespaceDecl();
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}
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uint32_t
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SymbolFileSymtab::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
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{
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if (m_obj_file->GetSymtab() == NULL)
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return 0;
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uint32_t resolved_flags = 0;
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if (resolve_scope & eSymbolContextSymbol)
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{
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sc.symbol = m_obj_file->GetSymtab()->FindSymbolContainingFileAddress(so_addr.GetFileAddress());
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if (sc.symbol)
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resolved_flags |= eSymbolContextSymbol;
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}
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return resolved_flags;
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}
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uint32_t
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SymbolFileSymtab::ResolveSymbolContext (const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
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{
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return 0;
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}
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uint32_t
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SymbolFileSymtab::FindGlobalVariables(const ConstString &name, const ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables)
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{
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return 0;
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}
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uint32_t
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SymbolFileSymtab::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables)
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{
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return 0;
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}
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uint32_t
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SymbolFileSymtab::FindFunctions(const ConstString &name, const ClangNamespaceDecl *namespace_decl, uint32_t name_type_mask, bool include_inlines, bool append, SymbolContextList& sc_list)
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{
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Timer scoped_timer (__PRETTY_FUNCTION__,
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"SymbolFileSymtab::FindFunctions (name = '%s')",
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name.GetCString());
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// If we ever support finding STABS or COFF debug info symbols,
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// we will need to add support here. We are not trying to find symbols
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// here, just "lldb_private::Function" objects that come from complete
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// debug information. Any symbol queries should go through the symbol
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// table itself in the module's object file.
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return 0;
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}
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uint32_t
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SymbolFileSymtab::FindFunctions(const RegularExpression& regex, bool include_inlines, bool append, SymbolContextList& sc_list)
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{
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Timer scoped_timer (__PRETTY_FUNCTION__,
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"SymbolFileSymtab::FindFunctions (regex = '%s')",
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regex.GetText());
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// If we ever support finding STABS or COFF debug info symbols,
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// we will need to add support here. We are not trying to find symbols
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// here, just "lldb_private::Function" objects that come from complete
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// debug information. Any symbol queries should go through the symbol
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// table itself in the module's object file.
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return 0;
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}
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static int CountMethodArgs(const char *method_signature)
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{
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int num_args = 0;
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for (const char *colon_pos = strchr(method_signature, ':');
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colon_pos != NULL;
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colon_pos = strchr(colon_pos + 1, ':'))
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{
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num_args++;
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}
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return num_args;
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}
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uint32_t
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SymbolFileSymtab::FindTypes (const lldb_private::SymbolContext& sc,
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const lldb_private::ConstString &name,
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const ClangNamespaceDecl *namespace_decl,
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bool append,
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uint32_t max_matches,
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lldb_private::TypeList& types)
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{
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return 0;
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}
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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lldb_private::ConstString
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SymbolFileSymtab::GetPluginName()
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{
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return GetPluginNameStatic();
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}
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uint32_t
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SymbolFileSymtab::GetPluginVersion()
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{
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return 1;
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}
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