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SymbolVendor.cpp
445 lines (397 loc) · 14 KB
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SymbolVendor.cpp
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//===-- SymbolVendor.cpp ----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolFile.h"
#include "lldb/Utility/Stream.h"
using namespace lldb;
using namespace lldb_private;
// FindPlugin
//
// Platforms can register a callback to use when creating symbol vendors to
// allow for complex debug information file setups, and to also allow for
// finding separate debug information files.
SymbolVendor *SymbolVendor::FindPlugin(const lldb::ModuleSP &module_sp,
lldb_private::Stream *feedback_strm) {
std::unique_ptr<SymbolVendor> instance_up;
SymbolVendorCreateInstance create_callback;
for (size_t idx = 0;
(create_callback = PluginManager::GetSymbolVendorCreateCallbackAtIndex(
idx)) != nullptr;
++idx) {
instance_up.reset(create_callback(module_sp, feedback_strm));
if (instance_up) {
return instance_up.release();
}
}
// The default implementation just tries to create debug information using
// the file representation for the module.
ObjectFileSP sym_objfile_sp;
FileSpec sym_spec = module_sp->GetSymbolFileFileSpec();
if (sym_spec && sym_spec != module_sp->GetObjectFile()->GetFileSpec()) {
DataBufferSP data_sp;
offset_t data_offset = 0;
sym_objfile_sp = ObjectFile::FindPlugin(
module_sp, &sym_spec, 0, FileSystem::Instance().GetByteSize(sym_spec),
data_sp, data_offset);
}
if (!sym_objfile_sp)
sym_objfile_sp = module_sp->GetObjectFile()->shared_from_this();
instance_up.reset(new SymbolVendor(module_sp));
instance_up->AddSymbolFileRepresentation(sym_objfile_sp);
return instance_up.release();
}
// SymbolVendor constructor
SymbolVendor::SymbolVendor(const lldb::ModuleSP &module_sp)
: ModuleChild(module_sp), m_type_list(), m_sym_file_up(), m_symtab() {}
// Destructor
SymbolVendor::~SymbolVendor() {}
// Add a representation given an object file.
void SymbolVendor::AddSymbolFileRepresentation(const ObjectFileSP &objfile_sp) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (objfile_sp) {
m_objfile_sp = objfile_sp;
m_sym_file_up.reset(SymbolFile::FindPlugin(objfile_sp.get()));
}
}
}
size_t SymbolVendor::GetNumCompileUnits() {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->GetNumCompileUnits();
}
return 0;
}
lldb::LanguageType SymbolVendor::ParseLanguage(CompileUnit &comp_unit) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseLanguage(comp_unit);
}
return eLanguageTypeUnknown;
}
size_t SymbolVendor::ParseFunctions(CompileUnit &comp_unit) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseFunctions(comp_unit);
}
return 0;
}
bool SymbolVendor::ParseLineTable(CompileUnit &comp_unit) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseLineTable(comp_unit);
}
return false;
}
bool SymbolVendor::ParseDebugMacros(CompileUnit &comp_unit) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseDebugMacros(comp_unit);
}
return false;
}
bool SymbolVendor::ParseSupportFiles(CompileUnit &comp_unit,
FileSpecList &support_files) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseSupportFiles(comp_unit, support_files);
}
return false;
}
bool SymbolVendor::ParseIsOptimized(CompileUnit &comp_unit) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseIsOptimized(comp_unit);
}
return false;
}
bool SymbolVendor::ParseImportedModules(
const SymbolContext &sc, std::vector<SourceModule> &imported_modules) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseImportedModules(sc, imported_modules);
}
return false;
}
size_t SymbolVendor::ParseBlocksRecursive(Function &func) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseBlocksRecursive(func);
}
return 0;
}
size_t SymbolVendor::ParseTypes(CompileUnit &comp_unit) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseTypes(comp_unit);
}
return 0;
}
size_t SymbolVendor::ParseVariablesForContext(const SymbolContext &sc) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ParseVariablesForContext(sc);
}
return 0;
}
Type *SymbolVendor::ResolveTypeUID(lldb::user_id_t type_uid) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ResolveTypeUID(type_uid);
}
return nullptr;
}
uint32_t SymbolVendor::ResolveSymbolContext(const Address &so_addr,
SymbolContextItem resolve_scope,
SymbolContext &sc) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ResolveSymbolContext(so_addr, resolve_scope, sc);
}
return 0;
}
uint32_t SymbolVendor::ResolveSymbolContext(const FileSpec &file_spec,
uint32_t line, bool check_inlines,
SymbolContextItem resolve_scope,
SymbolContextList &sc_list) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->ResolveSymbolContext(file_spec, line, check_inlines,
resolve_scope, sc_list);
}
return 0;
}
size_t
SymbolVendor::FindGlobalVariables(ConstString name,
const CompilerDeclContext *parent_decl_ctx,
size_t max_matches, VariableList &variables) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->FindGlobalVariables(name, parent_decl_ctx,
max_matches, variables);
}
return 0;
}
size_t SymbolVendor::FindGlobalVariables(const RegularExpression ®ex,
size_t max_matches,
VariableList &variables) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->FindGlobalVariables(regex, max_matches, variables);
}
return 0;
}
size_t SymbolVendor::FindFunctions(ConstString name,
const CompilerDeclContext *parent_decl_ctx,
FunctionNameType name_type_mask,
bool include_inlines, bool append,
SymbolContextList &sc_list) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->FindFunctions(name, parent_decl_ctx, name_type_mask,
include_inlines, append, sc_list);
}
return 0;
}
size_t SymbolVendor::FindFunctions(const RegularExpression ®ex,
bool include_inlines, bool append,
SymbolContextList &sc_list) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->FindFunctions(regex, include_inlines, append,
sc_list);
}
return 0;
}
size_t SymbolVendor::FindTypes(
ConstString name, const CompilerDeclContext *parent_decl_ctx,
bool append, size_t max_matches,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeMap &types) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->FindTypes(name, parent_decl_ctx, append,
max_matches, searched_symbol_files,
types);
}
if (!append)
types.Clear();
return 0;
}
size_t SymbolVendor::FindTypes(const std::vector<CompilerContext> &context,
bool append, TypeMap &types) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->FindTypes(context, append, types);
}
if (!append)
types.Clear();
return 0;
}
size_t SymbolVendor::GetTypes(SymbolContextScope *sc_scope, TypeClass type_mask,
lldb_private::TypeList &type_list) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->GetTypes(sc_scope, type_mask, type_list);
}
return 0;
}
CompilerDeclContext
SymbolVendor::FindNamespace(ConstString name,
const CompilerDeclContext *parent_decl_ctx) {
CompilerDeclContext namespace_decl_ctx;
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
namespace_decl_ctx = m_sym_file_up->FindNamespace(name, parent_decl_ctx);
}
return namespace_decl_ctx;
}
void SymbolVendor::Dump(Stream *s) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
bool show_context = false;
s->Printf("%p: ", static_cast<void *>(this));
s->Indent();
s->PutCString("SymbolVendor");
if (m_sym_file_up) {
*s << " " << m_sym_file_up->GetPluginName();
ObjectFile *objfile = m_sym_file_up->GetObjectFile();
if (objfile) {
const FileSpec &objfile_file_spec = objfile->GetFileSpec();
if (objfile_file_spec) {
s->PutCString(" (");
objfile_file_spec.Dump(s);
s->PutChar(')');
}
}
}
s->EOL();
s->PutCString("Types:\n");
m_type_list.Dump(s, show_context);
s->EOL();
if (m_sym_file_up)
m_sym_file_up->Dump(*s);
s->IndentMore();
if (Symtab *symtab = GetSymtab())
symtab->Dump(s, nullptr, eSortOrderNone);
s->IndentLess();
}
}
CompUnitSP SymbolVendor::GetCompileUnitAtIndex(size_t idx) {
ModuleSP module_sp(GetModule());
if (module_sp) {
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_sym_file_up)
return m_sym_file_up->GetCompileUnitAtIndex(idx);
}
return nullptr;
}
FileSpec SymbolVendor::GetMainFileSpec() const {
if (m_sym_file_up) {
const ObjectFile *symfile_objfile = m_sym_file_up->GetObjectFile();
if (symfile_objfile)
return symfile_objfile->GetFileSpec();
}
return FileSpec();
}
Symtab *SymbolVendor::GetSymtab() {
ModuleSP module_sp(GetModule());
if (!module_sp)
return nullptr;
std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex());
if (m_symtab)
return m_symtab;
ObjectFile *objfile = module_sp->GetObjectFile();
if (!objfile)
return nullptr;
m_symtab = objfile->GetSymtab();
if (m_symtab && m_sym_file_up)
m_sym_file_up->AddSymbols(*m_symtab);
return m_symtab;
}
void SymbolVendor::ClearSymtab() {
ModuleSP module_sp(GetModule());
if (module_sp) {
ObjectFile *objfile = module_sp->GetObjectFile();
if (objfile) {
// Clear symbol table from unified section list.
objfile->ClearSymtab();
}
}
}
void SymbolVendor::SectionFileAddressesChanged() {
ModuleSP module_sp(GetModule());
if (module_sp) {
ObjectFile *module_objfile = module_sp->GetObjectFile();
if (m_sym_file_up) {
ObjectFile *symfile_objfile = m_sym_file_up->GetObjectFile();
if (symfile_objfile != module_objfile)
symfile_objfile->SectionFileAddressesChanged();
}
Symtab *symtab = GetSymtab();
if (symtab) {
symtab->SectionFileAddressesChanged();
}
}
}
// PluginInterface protocol
lldb_private::ConstString SymbolVendor::GetPluginName() {
static ConstString g_name("vendor-default");
return g_name;
}
uint32_t SymbolVendor::GetPluginVersion() { return 1; }