bf9a77305f
This moves the following classes from Core -> Utility. ConstString Error RegularExpression Stream StreamString The goal here is to get lldbUtility into a state where it has no dependendencies except on itself and LLVM, so it can be the starting point at which to start untangling LLDB's dependencies. These are all low level and very widely used classes, and previously lldbUtility had dependencies up to lldbCore in order to use these classes. So moving then down to lldbUtility makes sense from both the short term and long term perspective in solving this problem. Differential Revision: https://reviews.llvm.org/D29427 llvm-svn: 293941
275 lines
9.3 KiB
C++
275 lines
9.3 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/Timer.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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#include "lldb/Utility/RegularExpression.h"
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using namespace lldb;
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using namespace lldb_private;
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void SymbolFileSymtab::Initialize() {
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PluginManager::RegisterPlugin(GetPluginNameStatic(),
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GetPluginDescriptionStatic(), CreateInstance);
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}
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void SymbolFileSymtab::Terminate() {
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PluginManager::UnregisterPlugin(CreateInstance);
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}
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lldb_private::ConstString SymbolFileSymtab::GetPluginNameStatic() {
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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 *SymbolFileSymtab::GetPluginDescriptionStatic() {
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return "Reads debug symbols from an object file's symbol table.";
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}
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SymbolFile *SymbolFileSymtab::CreateInstance(ObjectFile *obj_file) {
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return new SymbolFileSymtab(obj_file);
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}
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size_t SymbolFileSymtab::GetTypes(SymbolContextScope *sc_scope,
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uint32_t type_mask,
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lldb_private::TypeList &type_list) {
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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), m_source_indexes(), m_func_indexes(),
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m_code_indexes(), m_objc_class_name_to_index() {}
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SymbolFileSymtab::~SymbolFileSymtab() {}
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uint32_t SymbolFileSymtab::CalculateAbilities() {
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uint32_t abilities = 0;
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if (m_obj_file) {
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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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// 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,
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m_source_indexes)) {
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abilities |= CompileUnits;
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}
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if (symtab->AppendSymbolIndexesWithType(
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eSymbolTypeCode, Symtab::eDebugYes, Symtab::eVisibilityAny,
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m_func_indexes)) {
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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,
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Symtab::eVisibilityAny,
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m_code_indexes)) {
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symtab->SortSymbolIndexesByValue(m_code_indexes, true);
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abilities |= Functions;
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}
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if (symtab->AppendSymbolIndexesWithType(eSymbolTypeData,
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m_data_indexes)) {
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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,
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objc_class_indexes)) {
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symtab->AppendSymbolNamesToMap(objc_class_indexes, true, 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 SymbolFileSymtab::GetNumCompileUnits() {
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// If we don't have any source file symbols we will just have one compile unit
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// 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 organize the object
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// 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 SymbolFileSymtab::ParseCompileUnitAtIndex(uint32_t idx) {
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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
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// for
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// the entire object file
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if (idx < m_source_indexes.size()) {
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const Symbol *cu_symbol =
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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,
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cu_symbol->GetName().AsCString(), 0,
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eLanguageTypeUnknown, eLazyBoolNo));
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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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return eLanguageTypeUnknown;
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}
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size_t SymbolFileSymtab::ParseCompileUnitFunctions(const SymbolContext &sc) {
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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
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// for
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// the entire object file
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if (m_source_indexes.empty()) {
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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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if (!m_code_indexes.empty()) {
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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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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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// Union of all ranges in the function DIE (if the function is
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// 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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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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next_symbol = symtab->SymbolAtIndex(m_code_indexes[idx + 1]);
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if (next_symbol) {
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func_range.SetByteSize(
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next_symbol->GetAddressRef().GetOffset() -
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curr_symbol->GetAddressRef().GetOffset());
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}
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}
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FunctionSP func_sp(
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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
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// 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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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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} else {
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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 SymbolFileSymtab::ParseCompileUnitLineTable(const SymbolContext &sc) {
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return false;
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}
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bool SymbolFileSymtab::ParseCompileUnitDebugMacros(const SymbolContext &sc) {
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return false;
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}
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bool SymbolFileSymtab::ParseCompileUnitSupportFiles(
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const SymbolContext &sc, FileSpecList &support_files) {
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return false;
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}
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bool SymbolFileSymtab::ParseImportedModules(
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const SymbolContext &sc, std::vector<ConstString> &imported_modules) {
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return false;
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}
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size_t SymbolFileSymtab::ParseFunctionBlocks(const SymbolContext &sc) {
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return 0;
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}
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size_t SymbolFileSymtab::ParseTypes(const SymbolContext &sc) { return 0; }
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size_t SymbolFileSymtab::ParseVariablesForContext(const SymbolContext &sc) {
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return 0;
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}
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Type *SymbolFileSymtab::ResolveTypeUID(lldb::user_id_t type_uid) {
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return NULL;
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}
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bool SymbolFileSymtab::CompleteType(lldb_private::CompilerType &compiler_type) {
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return false;
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}
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uint32_t SymbolFileSymtab::ResolveSymbolContext(const Address &so_addr,
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uint32_t resolve_scope,
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SymbolContext &sc) {
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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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sc.symbol = m_obj_file->GetSymtab()->FindSymbolContainingFileAddress(
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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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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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lldb_private::ConstString SymbolFileSymtab::GetPluginName() {
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return GetPluginNameStatic();
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}
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uint32_t SymbolFileSymtab::GetPluginVersion() { return 1; }
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