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llvm-project/lldb/source/Core/Module.cpp

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//===-- Module.cpp ----------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Core/Module.h"
#include "lldb/Core/AddressRange.h" // for AddressRange
#include "lldb/Core/AddressResolverFileLine.h"
#include "lldb/Core/Debugger.h" // for Debugger
#include "lldb/Core/FileSpecList.h" // for FileSpecList
#include "lldb/Core/Mangled.h" // for Mangled
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Core/SearchFilter.h" // for SearchFilt...
#include "lldb/Core/Section.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Host/Host.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/ScriptInterpreter.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/Function.h" // for Function
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Symbol.h" // for Symbol
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/SymbolFile.h"
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Symbol/Symtab.h" // for Symtab
#include "lldb/Symbol/Type.h" // for Type
#include "lldb/Symbol/TypeList.h" // for TypeList
#include "lldb/Symbol/TypeMap.h"
#include "lldb/Symbol/TypeSystem.h"
#include "lldb/Target/Language.h"
#include "lldb/Target/Platform.h" // for Platform
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/DataBufferHeap.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/Logging.h" // for GetLogIfAn...
#include "lldb/Utility/RegularExpression.h"
#include "lldb/Utility/Status.h"
#include "lldb/Utility/Stream.h" // for Stream
#include "lldb/Utility/StreamString.h"
#include "lldb/Utility/Timer.h"
#if defined(LLVM_ON_WIN32)
#include "lldb/Host/windows/PosixApi.h" // for PATH_MAX
#endif
#include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h"
#include "Plugins/Language/ObjC/ObjCLanguage.h"
#include "Plugins/ObjectFile/JIT/ObjectFileJIT.h"
#include "llvm/ADT/STLExtras.h" // for make_unique
#include "llvm/Support/Compiler.h" // for LLVM_PRETT...
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h" // for raw_string...
#include <assert.h> // for assert
#include <cstdint> // for uint32_t
#include <inttypes.h> // for PRIx64
#include <map> // for map
#include <stdarg.h> // for va_end
#include <string.h> // for size_t
#include <type_traits> // for move
#include <utility> // for find, pair
namespace lldb_private {
class CompilerDeclContext;
}
namespace lldb_private {
class VariableList;
}
using namespace lldb;
using namespace lldb_private;
// Shared pointers to modules track module lifetimes in
// targets and in the global module, but this collection
// will track all module objects that are still alive
typedef std::vector<Module *> ModuleCollection;
static ModuleCollection &GetModuleCollection() {
// This module collection needs to live past any module, so we could either
// make it a
// shared pointer in each module or just leak is. Since it is only an empty
// vector by
// the time all the modules have gone away, we just leak it for now. If we
// decide this
// is a big problem we can introduce a Finalize method that will tear
// everything down in
// a predictable order.
static ModuleCollection *g_module_collection = nullptr;
if (g_module_collection == nullptr)
g_module_collection = new ModuleCollection();
return *g_module_collection;
}
std::recursive_mutex &Module::GetAllocationModuleCollectionMutex() {
// NOTE: The mutex below must be leaked since the global module list in
// the ModuleList class will get torn at some point, and we can't know
// if it will tear itself down before the "g_module_collection_mutex" below
// will. So we leak a Mutex object below to safeguard against that
static std::recursive_mutex *g_module_collection_mutex = nullptr;
if (g_module_collection_mutex == nullptr)
g_module_collection_mutex = new std::recursive_mutex; // NOTE: known leak
return *g_module_collection_mutex;
}
size_t Module::GetNumberAllocatedModules() {
std::lock_guard<std::recursive_mutex> guard(
GetAllocationModuleCollectionMutex());
return GetModuleCollection().size();
}
Module *Module::GetAllocatedModuleAtIndex(size_t idx) {
std::lock_guard<std::recursive_mutex> guard(
GetAllocationModuleCollectionMutex());
ModuleCollection &modules = GetModuleCollection();
if (idx < modules.size())
return modules[idx];
return nullptr;
}
#if 0
// These functions help us to determine if modules are still loaded, yet don't require that
// you have a command interpreter and can easily be called from an external debugger.
namespace lldb {
void
ClearModuleInfo (void)
{
const bool mandatory = true;
ModuleList::RemoveOrphanSharedModules(mandatory);
}
void
DumpModuleInfo (void)
{
Mutex::Locker locker (Module::GetAllocationModuleCollectionMutex());
ModuleCollection &modules = GetModuleCollection();
const size_t count = modules.size();
printf ("%s: %" PRIu64 " modules:\n", LLVM_PRETTY_FUNCTION, (uint64_t)count);
for (size_t i = 0; i < count; ++i)
{
StreamString strm;
Module *module = modules[i];
const bool in_shared_module_list = ModuleList::ModuleIsInCache (module);
module->GetDescription(&strm, eDescriptionLevelFull);
printf ("%p: shared = %i, ref_count = %3u, module = %s\n",
module,
in_shared_module_list,
(uint32_t)module->use_count(),
strm.GetString().c_str());
}
}
}
#endif
Module::Module(const ModuleSpec &module_spec)
: m_object_offset(0), m_file_has_changed(false),
m_first_file_changed_log(false) {
// Scope for locker below...
{
std::lock_guard<std::recursive_mutex> guard(
GetAllocationModuleCollectionMutex());
GetModuleCollection().push_back(this);
}
Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_OBJECT |
LIBLLDB_LOG_MODULES));
if (log != nullptr)
log->Printf("%p Module::Module((%s) '%s%s%s%s')", static_cast<void *>(this),
module_spec.GetArchitecture().GetArchitectureName(),
module_spec.GetFileSpec().GetPath().c_str(),
module_spec.GetObjectName().IsEmpty() ? "" : "(",
module_spec.GetObjectName().IsEmpty()
? ""
: module_spec.GetObjectName().AsCString(""),
module_spec.GetObjectName().IsEmpty() ? "" : ")");
// First extract all module specifications from the file using the local
// file path. If there are no specifications, then don't fill anything in
ModuleSpecList modules_specs;
if (ObjectFile::GetModuleSpecifications(module_spec.GetFileSpec(), 0, 0,
modules_specs) == 0)
return;
// Now make sure that one of the module specifications matches what we just
// extract. We might have a module specification that specifies a file
// "/usr/lib/dyld"
// with UUID XXX, but we might have a local version of "/usr/lib/dyld" that
// has
// UUID YYY and we don't want those to match. If they don't match, just don't
// fill any ivars in so we don't accidentally grab the wrong file later since
// they don't match...
ModuleSpec matching_module_spec;
if (modules_specs.FindMatchingModuleSpec(module_spec, matching_module_spec) ==
0)
return;
if (module_spec.GetFileSpec())
m_mod_time = FileSystem::GetModificationTime(module_spec.GetFileSpec());
else if (matching_module_spec.GetFileSpec())
m_mod_time =
FileSystem::GetModificationTime(matching_module_spec.GetFileSpec());
// Copy the architecture from the actual spec if we got one back, else use the
// one that was specified
if (matching_module_spec.GetArchitecture().IsValid())
m_arch = matching_module_spec.GetArchitecture();
else if (module_spec.GetArchitecture().IsValid())
m_arch = module_spec.GetArchitecture();
// Copy the file spec over and use the specified one (if there was one) so we
// don't use a path that might have gotten resolved a path in
// 'matching_module_spec'
if (module_spec.GetFileSpec())
m_file = module_spec.GetFileSpec();
else if (matching_module_spec.GetFileSpec())
m_file = matching_module_spec.GetFileSpec();
// Copy the platform file spec over
if (module_spec.GetPlatformFileSpec())
m_platform_file = module_spec.GetPlatformFileSpec();
else if (matching_module_spec.GetPlatformFileSpec())
m_platform_file = matching_module_spec.GetPlatformFileSpec();
// Copy the symbol file spec over
if (module_spec.GetSymbolFileSpec())
m_symfile_spec = module_spec.GetSymbolFileSpec();
else if (matching_module_spec.GetSymbolFileSpec())
m_symfile_spec = matching_module_spec.GetSymbolFileSpec();
// Copy the object name over
if (matching_module_spec.GetObjectName())
m_object_name = matching_module_spec.GetObjectName();
else
m_object_name = module_spec.GetObjectName();
// Always trust the object offset (file offset) and object modification
// time (for mod time in a BSD static archive) of from the matching
// module specification
m_object_offset = matching_module_spec.GetObjectOffset();
m_object_mod_time = matching_module_spec.GetObjectModificationTime();
}
Module::Module(const FileSpec &file_spec, const ArchSpec &arch,
const ConstString *object_name, lldb::offset_t object_offset,
const llvm::sys::TimePoint<> &object_mod_time)
: m_mod_time(FileSystem::GetModificationTime(file_spec)), m_arch(arch),
m_file(file_spec), m_object_offset(object_offset),
m_object_mod_time(object_mod_time), m_file_has_changed(false),
m_first_file_changed_log(false) {
// Scope for locker below...
{
std::lock_guard<std::recursive_mutex> guard(
GetAllocationModuleCollectionMutex());
GetModuleCollection().push_back(this);
}
if (object_name)
m_object_name = *object_name;
Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_OBJECT |
LIBLLDB_LOG_MODULES));
if (log != nullptr)
log->Printf("%p Module::Module((%s) '%s%s%s%s')", static_cast<void *>(this),
m_arch.GetArchitectureName(), m_file.GetPath().c_str(),
m_object_name.IsEmpty() ? "" : "(",
m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""),
m_object_name.IsEmpty() ? "" : ")");
}
Module::Module()
: m_object_offset(0), m_file_has_changed(false),
m_first_file_changed_log(false) {
std::lock_guard<std::recursive_mutex> guard(
GetAllocationModuleCollectionMutex());
GetModuleCollection().push_back(this);
}
Module::~Module() {
// Lock our module down while we tear everything down to make sure
// we don't get any access to the module while it is being destroyed
std::lock_guard<std::recursive_mutex> guard(m_mutex);
// Scope for locker below...
{
std::lock_guard<std::recursive_mutex> guard(
GetAllocationModuleCollectionMutex());
ModuleCollection &modules = GetModuleCollection();
ModuleCollection::iterator end = modules.end();
ModuleCollection::iterator pos = std::find(modules.begin(), end, this);
assert(pos != end);
modules.erase(pos);
}
Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_OBJECT |
LIBLLDB_LOG_MODULES));
if (log != nullptr)
log->Printf("%p Module::~Module((%s) '%s%s%s%s')",
static_cast<void *>(this), m_arch.GetArchitectureName(),
m_file.GetPath().c_str(), m_object_name.IsEmpty() ? "" : "(",
m_object_name.IsEmpty() ? "" : m_object_name.AsCString(""),
m_object_name.IsEmpty() ? "" : ")");
// Release any auto pointers before we start tearing down our member
// variables since the object file and symbol files might need to make
// function calls back into this module object. The ordering is important
// here because symbol files can require the module object file. So we tear
// down the symbol file first, then the object file.
m_sections_ap.reset();
m_symfile_ap.reset();
m_objfile_sp.reset();
}
ObjectFile *Module::GetMemoryObjectFile(const lldb::ProcessSP &process_sp,
lldb::addr_t header_addr, Status &error,
size_t size_to_read) {
if (m_objfile_sp) {
error.SetErrorString("object file already exists");
} else {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (process_sp) {
m_did_load_objfile = true;
auto data_ap = llvm::make_unique<DataBufferHeap>(size_to_read, 0);
Status readmem_error;
const size_t bytes_read =
process_sp->ReadMemory(header_addr, data_ap->GetBytes(),
data_ap->GetByteSize(), readmem_error);
if (bytes_read == size_to_read) {
DataBufferSP data_sp(data_ap.release());
m_objfile_sp = ObjectFile::FindPlugin(shared_from_this(), process_sp,
header_addr, data_sp);
if (m_objfile_sp) {
StreamString s;
s.Printf("0x%16.16" PRIx64, header_addr);
m_object_name.SetString(s.GetString());
// Once we get the object file, update our module with the object
// file's
// architecture since it might differ in vendor/os if some parts were
// unknown.
m_objfile_sp->GetArchitecture(m_arch);
} else {
error.SetErrorString("unable to find suitable object file plug-in");
}
} else {
error.SetErrorStringWithFormat("unable to read header from memory: %s",
readmem_error.AsCString());
}
} else {
error.SetErrorString("invalid process");
}
}
return m_objfile_sp.get();
}
const lldb_private::UUID &Module::GetUUID() {
if (!m_did_parse_uuid.load()) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (!m_did_parse_uuid.load()) {
ObjectFile *obj_file = GetObjectFile();
if (obj_file != nullptr) {
obj_file->GetUUID(&m_uuid);
m_did_parse_uuid = true;
}
}
}
return m_uuid;
}
TypeSystem *Module::GetTypeSystemForLanguage(LanguageType language) {
return m_type_system_map.GetTypeSystemForLanguage(language, this, true);
}
void Module::ParseAllDebugSymbols() {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
size_t num_comp_units = GetNumCompileUnits();
if (num_comp_units == 0)
return;
SymbolContext sc;
sc.module_sp = shared_from_this();
SymbolVendor *symbols = GetSymbolVendor();
for (size_t cu_idx = 0; cu_idx < num_comp_units; cu_idx++) {
sc.comp_unit = symbols->GetCompileUnitAtIndex(cu_idx).get();
if (sc.comp_unit) {
sc.function = nullptr;
symbols->ParseVariablesForContext(sc);
symbols->ParseCompileUnitFunctions(sc);
for (size_t func_idx = 0;
(sc.function = sc.comp_unit->GetFunctionAtIndex(func_idx).get()) !=
nullptr;
++func_idx) {
symbols->ParseFunctionBlocks(sc);
// Parse the variables for this function and all its blocks
symbols->ParseVariablesForContext(sc);
}
// Parse all types for this compile unit
sc.function = nullptr;
symbols->ParseTypes(sc);
}
}
}
void Module::CalculateSymbolContext(SymbolContext *sc) {
sc->module_sp = shared_from_this();
}
ModuleSP Module::CalculateSymbolContextModule() { return shared_from_this(); }
void Module::DumpSymbolContext(Stream *s) {
s->Printf(", Module{%p}", static_cast<void *>(this));
}
size_t Module::GetNumCompileUnits() {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat, "Module::GetNumCompileUnits (module = %p)",
static_cast<void *>(this));
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
return symbols->GetNumCompileUnits();
return 0;
}
CompUnitSP Module::GetCompileUnitAtIndex(size_t index) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
size_t num_comp_units = GetNumCompileUnits();
CompUnitSP cu_sp;
if (index < num_comp_units) {
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
cu_sp = symbols->GetCompileUnitAtIndex(index);
}
return cu_sp;
}
bool Module::ResolveFileAddress(lldb::addr_t vm_addr, Address &so_addr) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"Module::ResolveFileAddress (vm_addr = 0x%" PRIx64 ")",
vm_addr);
SectionList *section_list = GetSectionList();
if (section_list)
return so_addr.ResolveAddressUsingFileSections(vm_addr, section_list);
return false;
}
uint32_t Module::ResolveSymbolContextForAddress(
const Address &so_addr, uint32_t resolve_scope, SymbolContext &sc,
bool resolve_tail_call_address) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
uint32_t resolved_flags = 0;
// Clear the result symbol context in case we don't find anything, but don't
// clear the target
sc.Clear(false);
// Get the section from the section/offset address.
SectionSP section_sp(so_addr.GetSection());
// Make sure the section matches this module before we try and match anything
if (section_sp && section_sp->GetModule().get() == this) {
// If the section offset based address resolved itself, then this
// is the right module.
sc.module_sp = shared_from_this();
resolved_flags |= eSymbolContextModule;
SymbolVendor *sym_vendor = GetSymbolVendor();
if (!sym_vendor)
return resolved_flags;
// Resolve the compile unit, function, block, line table or line
// entry if requested.
if (resolve_scope & eSymbolContextCompUnit ||
resolve_scope & eSymbolContextFunction ||
resolve_scope & eSymbolContextBlock ||
resolve_scope & eSymbolContextLineEntry ||
resolve_scope & eSymbolContextVariable) {
resolved_flags |=
sym_vendor->ResolveSymbolContext(so_addr, resolve_scope, sc);
}
// Resolve the symbol if requested, but don't re-look it up if we've already
// found it.
if (resolve_scope & eSymbolContextSymbol &&
!(resolved_flags & eSymbolContextSymbol)) {
Symtab *symtab = sym_vendor->GetSymtab();
if (symtab && so_addr.IsSectionOffset()) {
Symbol *matching_symbol = nullptr;
symtab->ForEachSymbolContainingFileAddress(
so_addr.GetFileAddress(),
[&matching_symbol](Symbol *symbol) -> bool {
if (symbol->GetType() != eSymbolTypeInvalid) {
matching_symbol = symbol;
return false; // Stop iterating
}
return true; // Keep iterating
});
sc.symbol = matching_symbol;
if (!sc.symbol && resolve_scope & eSymbolContextFunction &&
!(resolved_flags & eSymbolContextFunction)) {
bool verify_unique = false; // No need to check again since
// ResolveSymbolContext failed to find a
// symbol at this address.
if (ObjectFile *obj_file = sc.module_sp->GetObjectFile())
sc.symbol =
obj_file->ResolveSymbolForAddress(so_addr, verify_unique);
}
if (sc.symbol) {
if (sc.symbol->IsSynthetic()) {
// We have a synthetic symbol so lets check if the object file
// from the symbol file in the symbol vendor is different than
// the object file for the module, and if so search its symbol
// table to see if we can come up with a better symbol. For example
// dSYM files on MacOSX have an unstripped symbol table inside of
// them.
ObjectFile *symtab_objfile = symtab->GetObjectFile();
if (symtab_objfile && symtab_objfile->IsStripped()) {
SymbolFile *symfile = sym_vendor->GetSymbolFile();
if (symfile) {
ObjectFile *symfile_objfile = symfile->GetObjectFile();
if (symfile_objfile != symtab_objfile) {
Symtab *symfile_symtab = symfile_objfile->GetSymtab();
if (symfile_symtab) {
Symbol *symbol =
symfile_symtab->FindSymbolContainingFileAddress(
so_addr.GetFileAddress());
if (symbol && !symbol->IsSynthetic()) {
sc.symbol = symbol;
}
}
}
}
}
}
resolved_flags |= eSymbolContextSymbol;
}
}
}
// For function symbols, so_addr may be off by one. This is a convention
// consistent
// with FDE row indices in eh_frame sections, but requires extra logic here
// to permit
// symbol lookup for disassembly and unwind.
if (resolve_scope & eSymbolContextSymbol &&
!(resolved_flags & eSymbolContextSymbol) && resolve_tail_call_address &&
so_addr.IsSectionOffset()) {
Address previous_addr = so_addr;
previous_addr.Slide(-1);
bool do_resolve_tail_call_address = false; // prevent recursion
const uint32_t flags = ResolveSymbolContextForAddress(
previous_addr, resolve_scope, sc, do_resolve_tail_call_address);
if (flags & eSymbolContextSymbol) {
AddressRange addr_range;
if (sc.GetAddressRange(eSymbolContextFunction | eSymbolContextSymbol, 0,
false, addr_range)) {
if (addr_range.GetBaseAddress().GetSection() ==
so_addr.GetSection()) {
// If the requested address is one past the address range of a
// function (i.e. a tail call),
// or the decremented address is the start of a function (i.e. some
// forms of trampoline),
// indicate that the symbol has been resolved.
if (so_addr.GetOffset() ==
addr_range.GetBaseAddress().GetOffset() ||
so_addr.GetOffset() ==
addr_range.GetBaseAddress().GetOffset() +
addr_range.GetByteSize()) {
resolved_flags |= flags;
}
} else {
sc.symbol =
nullptr; // Don't trust the symbol if the sections didn't match.
}
}
}
}
}
return resolved_flags;
}
uint32_t Module::ResolveSymbolContextForFilePath(const char *file_path,
uint32_t line,
bool check_inlines,
uint32_t resolve_scope,
SymbolContextList &sc_list) {
FileSpec file_spec(file_path, false);
return ResolveSymbolContextsForFileSpec(file_spec, line, check_inlines,
resolve_scope, sc_list);
}
uint32_t Module::ResolveSymbolContextsForFileSpec(const FileSpec &file_spec,
uint32_t line,
bool check_inlines,
uint32_t resolve_scope,
SymbolContextList &sc_list) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"Module::ResolveSymbolContextForFilePath (%s:%u, "
"check_inlines = %s, resolve_scope = 0x%8.8x)",
file_spec.GetPath().c_str(), line,
check_inlines ? "yes" : "no", resolve_scope);
const uint32_t initial_count = sc_list.GetSize();
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
symbols->ResolveSymbolContext(file_spec, line, check_inlines, resolve_scope,
sc_list);
return sc_list.GetSize() - initial_count;
}
size_t Module::FindGlobalVariables(const ConstString &name,
const CompilerDeclContext *parent_decl_ctx,
bool append, size_t max_matches,
VariableList &variables) {
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
return symbols->FindGlobalVariables(name, parent_decl_ctx, append,
max_matches, variables);
return 0;
}
size_t Module::FindGlobalVariables(const RegularExpression &regex, bool append,
size_t max_matches,
VariableList &variables) {
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
return symbols->FindGlobalVariables(regex, append, max_matches, variables);
return 0;
}
size_t Module::FindCompileUnits(const FileSpec &path, bool append,
SymbolContextList &sc_list) {
if (!append)
sc_list.Clear();
const size_t start_size = sc_list.GetSize();
const size_t num_compile_units = GetNumCompileUnits();
SymbolContext sc;
sc.module_sp = shared_from_this();
const bool compare_directory = (bool)path.GetDirectory();
for (size_t i = 0; i < num_compile_units; ++i) {
sc.comp_unit = GetCompileUnitAtIndex(i).get();
if (sc.comp_unit) {
if (FileSpec::Equal(*sc.comp_unit, path, compare_directory))
sc_list.Append(sc);
}
}
return sc_list.GetSize() - start_size;
}
Module::LookupInfo::LookupInfo(const ConstString &name, uint32_t name_type_mask,
lldb::LanguageType language)
: m_name(name), m_lookup_name(), m_language(language), m_name_type_mask(0),
m_match_name_after_lookup(false) {
const char *name_cstr = name.GetCString();
llvm::StringRef basename;
llvm::StringRef context;
if (name_type_mask & eFunctionNameTypeAuto) {
if (CPlusPlusLanguage::IsCPPMangledName(name_cstr))
m_name_type_mask = eFunctionNameTypeFull;
else if ((language == eLanguageTypeUnknown ||
Language::LanguageIsObjC(language)) &&
ObjCLanguage::IsPossibleObjCMethodName(name_cstr))
m_name_type_mask = eFunctionNameTypeFull;
else if (Language::LanguageIsC(language)) {
m_name_type_mask = eFunctionNameTypeFull;
} else {
if ((language == eLanguageTypeUnknown ||
Language::LanguageIsObjC(language)) &&
ObjCLanguage::IsPossibleObjCSelector(name_cstr))
m_name_type_mask |= eFunctionNameTypeSelector;
CPlusPlusLanguage::MethodName cpp_method(name);
basename = cpp_method.GetBasename();
if (basename.empty()) {
if (CPlusPlusLanguage::ExtractContextAndIdentifier(name_cstr, context,
basename))
m_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase);
else
m_name_type_mask |= eFunctionNameTypeFull;
} else {
m_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase);
}
}
} else {
m_name_type_mask = name_type_mask;
if (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.
CPlusPlusLanguage::MethodName cpp_method(name);
if (cpp_method.IsValid()) {
basename = cpp_method.GetBasename();
if (!cpp_method.GetQualifiers().empty()) {
// There is a "const" or other qualifier following the end of the
// function parens,
// this can't be a eFunctionNameTypeBase
m_name_type_mask &= ~(eFunctionNameTypeBase);
if (m_name_type_mask == eFunctionNameTypeNone)
return;
}
} else {
// If the CPP method parser didn't manage to chop this up, try to fill
// in the base name if we can.
// If a::b::c is passed in, we need to just look up "c", and then we'll
// filter the result later.
CPlusPlusLanguage::ExtractContextAndIdentifier(name_cstr, context,
basename);
}
}
if (name_type_mask & eFunctionNameTypeSelector) {
if (!ObjCLanguage::IsPossibleObjCSelector(name_cstr)) {
m_name_type_mask &= ~(eFunctionNameTypeSelector);
if (m_name_type_mask == eFunctionNameTypeNone)
return;
}
}
// Still try and get a basename in case someone specifies a name type mask
// of eFunctionNameTypeFull and a name like "A::func"
if (basename.empty()) {
if (name_type_mask & eFunctionNameTypeFull &&
!CPlusPlusLanguage::IsCPPMangledName(name_cstr)) {
CPlusPlusLanguage::MethodName cpp_method(name);
basename = cpp_method.GetBasename();
if (basename.empty())
CPlusPlusLanguage::ExtractContextAndIdentifier(name_cstr, context,
basename);
}
}
}
if (!basename.empty()) {
// The name supplied was a partial C++ path like "a::count". In this case we
// want to do a
// lookup on the basename "count" and then make sure any matching results
// contain "a::count"
// so that it would match "b::a::count" and "a::count". This is why we set
// "match_name_after_lookup"
// to true
m_lookup_name.SetString(basename);
m_match_name_after_lookup = true;
} else {
// The name is already correct, just use the exact name as supplied, and we
// won't need
// to check if any matches contain "name"
m_lookup_name = name;
m_match_name_after_lookup = false;
}
}
void Module::LookupInfo::Prune(SymbolContextList &sc_list,
size_t start_idx) const {
if (m_match_name_after_lookup && m_name) {
SymbolContext sc;
size_t i = start_idx;
while (i < sc_list.GetSize()) {
if (!sc_list.GetContextAtIndex(i, sc))
break;
ConstString full_name(sc.GetFunctionName());
if (full_name &&
::strstr(full_name.GetCString(), m_name.GetCString()) == nullptr) {
sc_list.RemoveContextAtIndex(i);
} else {
++i;
}
}
}
// If we have only full name matches we might have tried to set breakpoint on
// "func" and specified eFunctionNameTypeFull, but we might have found
// "a::func()", "a::b::func()", "c::func()", "func()" and "func". Only
// "func()" and "func" should end up matching.
if (m_name_type_mask == eFunctionNameTypeFull) {
SymbolContext sc;
size_t i = start_idx;
while (i < sc_list.GetSize()) {
if (!sc_list.GetContextAtIndex(i, sc))
break;
// Make sure the mangled and demangled names don't match before we try
// to pull anything out
ConstString mangled_name(sc.GetFunctionName(Mangled::ePreferMangled));
ConstString full_name(sc.GetFunctionName());
if (mangled_name != m_name && full_name != m_name)
{
CPlusPlusLanguage::MethodName cpp_method(full_name);
if (cpp_method.IsValid()) {
if (cpp_method.GetContext().empty()) {
if (cpp_method.GetBasename().compare(m_name.GetStringRef()) != 0) {
sc_list.RemoveContextAtIndex(i);
continue;
}
} else {
std::string qualified_name;
llvm::StringRef anon_prefix("(anonymous namespace)");
if (cpp_method.GetContext() == anon_prefix)
qualified_name = cpp_method.GetBasename().str();
else
qualified_name = cpp_method.GetScopeQualifiedName();
if (qualified_name.compare(m_name.GetCString()) != 0) {
sc_list.RemoveContextAtIndex(i);
continue;
}
}
}
}
++i;
}
}
}
size_t Module::FindFunctions(const ConstString &name,
const CompilerDeclContext *parent_decl_ctx,
uint32_t name_type_mask, bool include_symbols,
bool include_inlines, bool append,
SymbolContextList &sc_list) {
if (!append)
sc_list.Clear();
const size_t old_size = sc_list.GetSize();
// Find all the functions (not symbols, but debug information functions...
SymbolVendor *symbols = GetSymbolVendor();
if (name_type_mask & eFunctionNameTypeAuto) {
LookupInfo lookup_info(name, name_type_mask, eLanguageTypeUnknown);
if (symbols) {
symbols->FindFunctions(lookup_info.GetLookupName(), parent_decl_ctx,
lookup_info.GetNameTypeMask(), include_inlines,
append, sc_list);
// Now check our symbol table for symbols that are code symbols if
// requested
if (include_symbols) {
Symtab *symtab = symbols->GetSymtab();
if (symtab)
symtab->FindFunctionSymbols(lookup_info.GetLookupName(),
lookup_info.GetNameTypeMask(), sc_list);
}
}
const size_t new_size = sc_list.GetSize();
if (old_size < new_size)
lookup_info.Prune(sc_list, old_size);
} else {
if (symbols) {
symbols->FindFunctions(name, parent_decl_ctx, name_type_mask,
include_inlines, append, sc_list);
// Now check our symbol table for symbols that are code symbols if
// requested
if (include_symbols) {
Symtab *symtab = symbols->GetSymtab();
if (symtab)
symtab->FindFunctionSymbols(name, name_type_mask, sc_list);
}
}
}
return sc_list.GetSize() - old_size;
}
size_t Module::FindFunctions(const RegularExpression &regex,
bool include_symbols, bool include_inlines,
bool append, SymbolContextList &sc_list) {
if (!append)
sc_list.Clear();
const size_t start_size = sc_list.GetSize();
SymbolVendor *symbols = GetSymbolVendor();
if (symbols) {
symbols->FindFunctions(regex, include_inlines, append, sc_list);
// Now check our symbol table for symbols that are code symbols if requested
if (include_symbols) {
Symtab *symtab = symbols->GetSymtab();
if (symtab) {
std::vector<uint32_t> symbol_indexes;
symtab->AppendSymbolIndexesMatchingRegExAndType(
regex, eSymbolTypeAny, Symtab::eDebugAny, Symtab::eVisibilityAny,
symbol_indexes);
const size_t num_matches = symbol_indexes.size();
if (num_matches) {
SymbolContext sc(this);
const size_t end_functions_added_index = sc_list.GetSize();
size_t num_functions_added_to_sc_list =
end_functions_added_index - start_size;
if (num_functions_added_to_sc_list == 0) {
// No functions were added, just symbols, so we can just append them
for (size_t i = 0; i < num_matches; ++i) {
sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]);
SymbolType sym_type = sc.symbol->GetType();
if (sc.symbol && (sym_type == eSymbolTypeCode ||
sym_type == eSymbolTypeResolver))
sc_list.Append(sc);
}
} else {
typedef std::map<lldb::addr_t, uint32_t> FileAddrToIndexMap;
FileAddrToIndexMap file_addr_to_index;
for (size_t i = start_size; i < end_functions_added_index; ++i) {
const SymbolContext &sc = sc_list[i];
if (sc.block)
continue;
file_addr_to_index[sc.function->GetAddressRange()
.GetBaseAddress()
.GetFileAddress()] = i;
}
FileAddrToIndexMap::const_iterator end = file_addr_to_index.end();
// Functions were added so we need to merge symbols into any
// existing function symbol contexts
for (size_t i = start_size; i < num_matches; ++i) {
sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]);
SymbolType sym_type = sc.symbol->GetType();
if (sc.symbol && sc.symbol->ValueIsAddress() &&
(sym_type == eSymbolTypeCode ||
sym_type == eSymbolTypeResolver)) {
FileAddrToIndexMap::const_iterator pos =
file_addr_to_index.find(
sc.symbol->GetAddressRef().GetFileAddress());
if (pos == end)
sc_list.Append(sc);
else
sc_list[pos->second].symbol = sc.symbol;
}
}
}
}
}
}
}
return sc_list.GetSize() - start_size;
}
void Module::FindAddressesForLine(const lldb::TargetSP target_sp,
const FileSpec &file, uint32_t line,
Function *function,
std::vector<Address> &output_local,
std::vector<Address> &output_extern) {
SearchFilterByModule filter(target_sp, m_file);
AddressResolverFileLine resolver(file, line, true);
resolver.ResolveAddress(filter);
for (size_t n = 0; n < resolver.GetNumberOfAddresses(); n++) {
Address addr = resolver.GetAddressRangeAtIndex(n).GetBaseAddress();
Function *f = addr.CalculateSymbolContextFunction();
if (f && f == function)
output_local.push_back(addr);
else
output_extern.push_back(addr);
}
}
size_t Module::FindTypes_Impl(
const SymbolContext &sc, const ConstString &name,
const CompilerDeclContext *parent_decl_ctx, bool append, size_t max_matches,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeMap &types) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat, LLVM_PRETTY_FUNCTION);
if (!sc.module_sp || sc.module_sp.get() == this) {
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
return symbols->FindTypes(sc, name, parent_decl_ctx, append, max_matches,
searched_symbol_files, types);
}
return 0;
}
size_t Module::FindTypesInNamespace(const SymbolContext &sc,
const ConstString &type_name,
const CompilerDeclContext *parent_decl_ctx,
size_t max_matches, TypeList &type_list) {
const bool append = true;
TypeMap types_map;
llvm::DenseSet<lldb_private::SymbolFile *> searched_symbol_files;
size_t num_types =
FindTypes_Impl(sc, type_name, parent_decl_ctx, append, max_matches,
searched_symbol_files, types_map);
if (num_types > 0)
sc.SortTypeList(types_map, type_list);
return num_types;
}
lldb::TypeSP Module::FindFirstType(const SymbolContext &sc,
const ConstString &name, bool exact_match) {
TypeList type_list;
llvm::DenseSet<lldb_private::SymbolFile *> searched_symbol_files;
const size_t num_matches =
FindTypes(sc, name, exact_match, 1, searched_symbol_files, type_list);
if (num_matches)
return type_list.GetTypeAtIndex(0);
return TypeSP();
}
size_t Module::FindTypes(
const SymbolContext &sc, const ConstString &name, bool exact_match,
size_t max_matches,
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
TypeList &types) {
size_t num_matches = 0;
const char *type_name_cstr = name.GetCString();
llvm::StringRef type_scope;
llvm::StringRef type_basename;
const bool append = true;
TypeClass type_class = eTypeClassAny;
TypeMap typesmap;
if (Type::GetTypeScopeAndBasename(type_name_cstr, type_scope, type_basename,
type_class)) {
// Check if "name" starts with "::" which means the qualified type starts
// from the root namespace and implies and exact match. The typenames we
// get back from clang do not start with "::" so we need to strip this off
// in order to get the qualified names to match
exact_match = type_scope.consume_front("::");
ConstString type_basename_const_str(type_basename);
if (FindTypes_Impl(sc, type_basename_const_str, nullptr, append,
max_matches, searched_symbol_files, typesmap)) {
typesmap.RemoveMismatchedTypes(type_scope, type_basename, type_class,
exact_match);
num_matches = typesmap.GetSize();
}
} else {
// The type is not in a namespace/class scope, just search for it by
// basename
if (type_class != eTypeClassAny) {
// The "type_name_cstr" will have been modified if we have a valid type
// class
// prefix (like "struct", "class", "union", "typedef" etc).
FindTypes_Impl(sc, ConstString(type_basename), nullptr, append,
max_matches, searched_symbol_files, typesmap);
typesmap.RemoveMismatchedTypes(type_class);
num_matches = typesmap.GetSize();
} else {
num_matches = FindTypes_Impl(sc, name, nullptr, append, max_matches,
searched_symbol_files, typesmap);
}
}
if (num_matches > 0)
sc.SortTypeList(typesmap, types);
return num_matches;
}
SymbolVendor *Module::GetSymbolVendor(bool can_create,
lldb_private::Stream *feedback_strm) {
if (!m_did_load_symbol_vendor.load()) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (!m_did_load_symbol_vendor.load() && can_create) {
ObjectFile *obj_file = GetObjectFile();
if (obj_file != nullptr) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat, LLVM_PRETTY_FUNCTION);
m_symfile_ap.reset(
SymbolVendor::FindPlugin(shared_from_this(), feedback_strm));
m_did_load_symbol_vendor = true;
}
}
}
return m_symfile_ap.get();
}
void Module::SetFileSpecAndObjectName(const FileSpec &file,
const ConstString &object_name) {
// Container objects whose paths do not specify a file directly can call
// this function to correct the file and object names.
m_file = file;
m_mod_time = FileSystem::GetModificationTime(file);
m_object_name = object_name;
}
const ArchSpec &Module::GetArchitecture() const { return m_arch; }
std::string Module::GetSpecificationDescription() const {
std::string spec(GetFileSpec().GetPath());
if (m_object_name) {
spec += '(';
spec += m_object_name.GetCString();
spec += ')';
}
return spec;
}
void Module::GetDescription(Stream *s, lldb::DescriptionLevel level) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (level >= eDescriptionLevelFull) {
if (m_arch.IsValid())
s->Printf("(%s) ", m_arch.GetArchitectureName());
}
if (level == eDescriptionLevelBrief) {
const char *filename = m_file.GetFilename().GetCString();
if (filename)
s->PutCString(filename);
} else {
char path[PATH_MAX];
if (m_file.GetPath(path, sizeof(path)))
s->PutCString(path);
}
const char *object_name = m_object_name.GetCString();
if (object_name)
s->Printf("(%s)", object_name);
}
void Module::ReportError(const char *format, ...) {
if (format && format[0]) {
StreamString strm;
strm.PutCString("error: ");
GetDescription(&strm, lldb::eDescriptionLevelBrief);
strm.PutChar(' ');
va_list args;
va_start(args, format);
strm.PrintfVarArg(format, args);
va_end(args);
const int format_len = strlen(format);
if (format_len > 0) {
const char last_char = format[format_len - 1];
if (last_char != '\n' || last_char != '\r')
strm.EOL();
}
Host::SystemLog(Host::eSystemLogError, "%s", strm.GetData());
}
}
bool Module::FileHasChanged() const {
if (!m_file_has_changed)
m_file_has_changed =
(FileSystem::GetModificationTime(m_file) != m_mod_time);
return m_file_has_changed;
}
void Module::ReportErrorIfModifyDetected(const char *format, ...) {
if (!m_first_file_changed_log) {
if (FileHasChanged()) {
m_first_file_changed_log = true;
if (format) {
StreamString strm;
strm.PutCString("error: the object file ");
GetDescription(&strm, lldb::eDescriptionLevelFull);
strm.PutCString(" has been modified\n");
va_list args;
va_start(args, format);
strm.PrintfVarArg(format, args);
va_end(args);
const int format_len = strlen(format);
if (format_len > 0) {
const char last_char = format[format_len - 1];
if (last_char != '\n' || last_char != '\r')
strm.EOL();
}
strm.PutCString("The debug session should be aborted as the original "
"debug information has been overwritten.\n");
Host::SystemLog(Host::eSystemLogError, "%s", strm.GetData());
}
}
}
}
void Module::ReportWarning(const char *format, ...) {
if (format && format[0]) {
StreamString strm;
strm.PutCString("warning: ");
GetDescription(&strm, lldb::eDescriptionLevelFull);
strm.PutChar(' ');
va_list args;
va_start(args, format);
strm.PrintfVarArg(format, args);
va_end(args);
const int format_len = strlen(format);
if (format_len > 0) {
const char last_char = format[format_len - 1];
if (last_char != '\n' || last_char != '\r')
strm.EOL();
}
Host::SystemLog(Host::eSystemLogWarning, "%s", strm.GetData());
}
}
void Module::LogMessage(Log *log, const char *format, ...) {
if (log != nullptr) {
StreamString log_message;
GetDescription(&log_message, lldb::eDescriptionLevelFull);
log_message.PutCString(": ");
va_list args;
va_start(args, format);
log_message.PrintfVarArg(format, args);
va_end(args);
log->PutCString(log_message.GetData());
}
}
void Module::LogMessageVerboseBacktrace(Log *log, const char *format, ...) {
if (log != nullptr) {
StreamString log_message;
GetDescription(&log_message, lldb::eDescriptionLevelFull);
log_message.PutCString(": ");
va_list args;
va_start(args, format);
log_message.PrintfVarArg(format, args);
va_end(args);
if (log->GetVerbose()) {
std::string back_trace;
llvm::raw_string_ostream stream(back_trace);
llvm::sys::PrintStackTrace(stream);
log_message.PutCString(back_trace);
}
log->PutCString(log_message.GetData());
}
}
void Module::Dump(Stream *s) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
// s->Printf("%.*p: ", (int)sizeof(void*) * 2, this);
s->Indent();
s->Printf("Module %s%s%s%s\n", m_file.GetPath().c_str(),
m_object_name ? "(" : "",
m_object_name ? m_object_name.GetCString() : "",
m_object_name ? ")" : "");
s->IndentMore();
ObjectFile *objfile = GetObjectFile();
if (objfile)
objfile->Dump(s);
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
symbols->Dump(s);
s->IndentLess();
}
TypeList *Module::GetTypeList() {
SymbolVendor *symbols = GetSymbolVendor();
if (symbols)
return &symbols->GetTypeList();
return nullptr;
}
const ConstString &Module::GetObjectName() const { return m_object_name; }
ObjectFile *Module::GetObjectFile() {
if (!m_did_load_objfile.load()) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (!m_did_load_objfile.load()) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat, "Module::GetObjectFile () module = %s",
GetFileSpec().GetFilename().AsCString(""));
DataBufferSP data_sp;
lldb::offset_t data_offset = 0;
const lldb::offset_t file_size = m_file.GetByteSize();
if (file_size > m_object_offset) {
m_did_load_objfile = true;
m_objfile_sp = ObjectFile::FindPlugin(
shared_from_this(), &m_file, m_object_offset,
file_size - m_object_offset, data_sp, data_offset);
if (m_objfile_sp) {
// Once we get the object file, update our module with the object
// file's
// architecture since it might differ in vendor/os if some parts were
// unknown. But since the matching arch might already be more
// specific
// than the generic COFF architecture, only merge in those values that
// overwrite unspecified unknown values.
ArchSpec new_arch;
m_objfile_sp->GetArchitecture(new_arch);
m_arch.MergeFrom(new_arch);
} else {
ReportError("failed to load objfile for %s",
GetFileSpec().GetPath().c_str());
}
}
}
}
return m_objfile_sp.get();
}
SectionList *Module::GetSectionList() {
// Populate m_unified_sections_ap with sections from objfile.
if (!m_sections_ap) {
ObjectFile *obj_file = GetObjectFile();
if (obj_file != nullptr)
obj_file->CreateSections(*GetUnifiedSectionList());
}
return m_sections_ap.get();
}
void Module::SectionFileAddressesChanged() {
ObjectFile *obj_file = GetObjectFile();
if (obj_file)
obj_file->SectionFileAddressesChanged();
SymbolVendor *sym_vendor = GetSymbolVendor();
if (sym_vendor != nullptr)
sym_vendor->SectionFileAddressesChanged();
}
SectionList *Module::GetUnifiedSectionList() {
// Populate m_unified_sections_ap with sections from objfile.
if (!m_sections_ap)
m_sections_ap = llvm::make_unique<SectionList>();
return m_sections_ap.get();
}
const Symbol *Module::FindFirstSymbolWithNameAndType(const ConstString &name,
SymbolType symbol_type) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(
func_cat, "Module::FindFirstSymbolWithNameAndType (name = %s, type = %i)",
name.AsCString(), symbol_type);
SymbolVendor *sym_vendor = GetSymbolVendor();
if (sym_vendor) {
Symtab *symtab = sym_vendor->GetSymtab();
if (symtab)
return symtab->FindFirstSymbolWithNameAndType(
name, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny);
}
return nullptr;
}
void Module::SymbolIndicesToSymbolContextList(
Symtab *symtab, std::vector<uint32_t> &symbol_indexes,
SymbolContextList &sc_list) {
// No need to protect this call using m_mutex all other method calls are
// already thread safe.
size_t num_indices = symbol_indexes.size();
if (num_indices > 0) {
SymbolContext sc;
CalculateSymbolContext(&sc);
for (size_t i = 0; i < num_indices; i++) {
sc.symbol = symtab->SymbolAtIndex(symbol_indexes[i]);
if (sc.symbol)
sc_list.Append(sc);
}
}
}
size_t Module::FindFunctionSymbols(const ConstString &name,
uint32_t name_type_mask,
SymbolContextList &sc_list) {
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat,
"Module::FindSymbolsFunctions (name = %s, mask = 0x%8.8x)",
name.AsCString(), name_type_mask);
SymbolVendor *sym_vendor = GetSymbolVendor();
if (sym_vendor) {
Symtab *symtab = sym_vendor->GetSymtab();
if (symtab)
return symtab->FindFunctionSymbols(name, name_type_mask, sc_list);
}
return 0;
}
size_t Module::FindSymbolsWithNameAndType(const ConstString &name,
SymbolType symbol_type,
SymbolContextList &sc_list) {
// No need to protect this call using m_mutex all other method calls are
// already thread safe.
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(
func_cat, "Module::FindSymbolsWithNameAndType (name = %s, type = %i)",
name.AsCString(), symbol_type);
const size_t initial_size = sc_list.GetSize();
SymbolVendor *sym_vendor = GetSymbolVendor();
if (sym_vendor) {
Symtab *symtab = sym_vendor->GetSymtab();
if (symtab) {
std::vector<uint32_t> symbol_indexes;
symtab->FindAllSymbolsWithNameAndType(name, symbol_type, symbol_indexes);
SymbolIndicesToSymbolContextList(symtab, symbol_indexes, sc_list);
}
}
return sc_list.GetSize() - initial_size;
}
size_t Module::FindSymbolsMatchingRegExAndType(const RegularExpression &regex,
SymbolType symbol_type,
SymbolContextList &sc_list) {
// No need to protect this call using m_mutex all other method calls are
// already thread safe.
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(
func_cat,
"Module::FindSymbolsMatchingRegExAndType (regex = %s, type = %i)",
regex.GetText().str().c_str(), symbol_type);
const size_t initial_size = sc_list.GetSize();
SymbolVendor *sym_vendor = GetSymbolVendor();
if (sym_vendor) {
Symtab *symtab = sym_vendor->GetSymtab();
if (symtab) {
std::vector<uint32_t> symbol_indexes;
symtab->FindAllSymbolsMatchingRexExAndType(
regex, symbol_type, Symtab::eDebugAny, Symtab::eVisibilityAny,
symbol_indexes);
SymbolIndicesToSymbolContextList(symtab, symbol_indexes, sc_list);
}
}
return sc_list.GetSize() - initial_size;
}
void Module::PreloadSymbols() {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
SymbolVendor * sym_vendor = GetSymbolVendor();
if (!sym_vendor) {
return;
}
// Prime the symbol file first, since it adds symbols to the symbol table.
if (SymbolFile *symbol_file = sym_vendor->GetSymbolFile()) {
symbol_file->PreloadSymbols();
}
// Now we can prime the symbol table.
if (Symtab * symtab = sym_vendor->GetSymtab()) {
symtab->PreloadSymbols();
}
}
void Module::SetSymbolFileFileSpec(const FileSpec &file) {
if (!file.Exists())
return;
if (m_symfile_ap) {
// Remove any sections in the unified section list that come from the
// current symbol vendor.
SectionList *section_list = GetSectionList();
SymbolFile *symbol_file = m_symfile_ap->GetSymbolFile();
if (section_list && symbol_file) {
ObjectFile *obj_file = symbol_file->GetObjectFile();
// Make sure we have an object file and that the symbol vendor's objfile
// isn't
// the same as the module's objfile before we remove any sections for
// it...
if (obj_file) {
// Check to make sure we aren't trying to specify the file we already
// have
if (obj_file->GetFileSpec() == file) {
// We are being told to add the exact same file that we already have
// we don't have to do anything.
return;
}
// Cleare the current symtab as we are going to replace it with a new
// one
obj_file->ClearSymtab();
// The symbol file might be a directory bundle ("/tmp/a.out.dSYM")
// instead
// of a full path to the symbol file within the bundle
// ("/tmp/a.out.dSYM/Contents/Resources/DWARF/a.out"). So we need to
// check this
if (llvm::sys::fs::is_directory(file.GetPath())) {
std::string new_path(file.GetPath());
std::string old_path(obj_file->GetFileSpec().GetPath());
if (old_path.find(new_path) == 0) {
// We specified the same bundle as the symbol file that we already
// have
return;
}
}
if (obj_file != m_objfile_sp.get()) {
size_t num_sections = section_list->GetNumSections(0);
for (size_t idx = num_sections; idx > 0; --idx) {
lldb::SectionSP section_sp(
section_list->GetSectionAtIndex(idx - 1));
if (section_sp->GetObjectFile() == obj_file) {
section_list->DeleteSection(idx - 1);
}
}
}
}
}
// Keep all old symbol files around in case there are any lingering type
// references in
// any SBValue objects that might have been handed out.
m_old_symfiles.push_back(std::move(m_symfile_ap));
}
m_symfile_spec = file;
m_symfile_ap.reset();
m_did_load_symbol_vendor = false;
}
bool Module::IsExecutable() {
if (GetObjectFile() == nullptr)
return false;
else
return GetObjectFile()->IsExecutable();
}
bool Module::IsLoadedInTarget(Target *target) {
ObjectFile *obj_file = GetObjectFile();
if (obj_file) {
SectionList *sections = GetSectionList();
if (sections != nullptr) {
size_t num_sections = sections->GetSize();
for (size_t sect_idx = 0; sect_idx < num_sections; sect_idx++) {
SectionSP section_sp = sections->GetSectionAtIndex(sect_idx);
if (section_sp->GetLoadBaseAddress(target) != LLDB_INVALID_ADDRESS) {
return true;
}
}
}
}
return false;
}
bool Module::LoadScriptingResourceInTarget(Target *target, Status &error,
Stream *feedback_stream) {
if (!target) {
error.SetErrorString("invalid destination Target");
return false;
}
LoadScriptFromSymFile should_load =
target->TargetProperties::GetLoadScriptFromSymbolFile();
if (should_load == eLoadScriptFromSymFileFalse)
return false;
Debugger &debugger = target->GetDebugger();
const ScriptLanguage script_language = debugger.GetScriptLanguage();
if (script_language != eScriptLanguageNone) {
PlatformSP platform_sp(target->GetPlatform());
if (!platform_sp) {
error.SetErrorString("invalid Platform");
return false;
}
FileSpecList file_specs = platform_sp->LocateExecutableScriptingResources(
target, *this, feedback_stream);
const uint32_t num_specs = file_specs.GetSize();
if (num_specs) {
ScriptInterpreter *script_interpreter =
debugger.GetCommandInterpreter().GetScriptInterpreter();
if (script_interpreter) {
for (uint32_t i = 0; i < num_specs; ++i) {
FileSpec scripting_fspec(file_specs.GetFileSpecAtIndex(i));
if (scripting_fspec && scripting_fspec.Exists()) {
if (should_load == eLoadScriptFromSymFileWarn) {
if (feedback_stream)
feedback_stream->Printf(
"warning: '%s' contains a debug script. To run this script "
"in "
"this debug session:\n\n command script import "
"\"%s\"\n\n"
"To run all discovered debug scripts in this session:\n\n"
" settings set target.load-script-from-symbol-file "
"true\n",
GetFileSpec().GetFileNameStrippingExtension().GetCString(),
scripting_fspec.GetPath().c_str());
return false;
}
StreamString scripting_stream;
scripting_fspec.Dump(&scripting_stream);
const bool can_reload = true;
const bool init_lldb_globals = false;
bool did_load = script_interpreter->LoadScriptingModule(
scripting_stream.GetData(), can_reload, init_lldb_globals,
error);
if (!did_load)
return false;
}
}
} else {
error.SetErrorString("invalid ScriptInterpreter");
return false;
}
}
}
return true;
}
bool Module::SetArchitecture(const ArchSpec &new_arch) {
if (!m_arch.IsValid()) {
m_arch = new_arch;
return true;
}
return m_arch.IsCompatibleMatch(new_arch);
}
bool Module::SetLoadAddress(Target &target, lldb::addr_t value,
bool value_is_offset, bool &changed) {
ObjectFile *object_file = GetObjectFile();
if (object_file != nullptr) {
changed = object_file->SetLoadAddress(target, value, value_is_offset);
return true;
} else {
changed = false;
}
return false;
}
bool Module::MatchesModuleSpec(const ModuleSpec &module_ref) {
const UUID &uuid = module_ref.GetUUID();
if (uuid.IsValid()) {
// If the UUID matches, then nothing more needs to match...
return (uuid == GetUUID());
}
const FileSpec &file_spec = module_ref.GetFileSpec();
if (file_spec) {
if (!FileSpec::Equal(file_spec, m_file, (bool)file_spec.GetDirectory()) &&
!FileSpec::Equal(file_spec, m_platform_file,
(bool)file_spec.GetDirectory()))
return false;
}
const FileSpec &platform_file_spec = module_ref.GetPlatformFileSpec();
if (platform_file_spec) {
if (!FileSpec::Equal(platform_file_spec, GetPlatformFileSpec(),
(bool)platform_file_spec.GetDirectory()))
return false;
}
const ArchSpec &arch = module_ref.GetArchitecture();
if (arch.IsValid()) {
if (!m_arch.IsCompatibleMatch(arch))
return false;
}
const ConstString &object_name = module_ref.GetObjectName();
if (object_name) {
if (object_name != GetObjectName())
return false;
}
return true;
}
bool Module::FindSourceFile(const FileSpec &orig_spec,
FileSpec &new_spec) const {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
return m_source_mappings.FindFile(orig_spec, new_spec);
}
bool Module::RemapSourceFile(llvm::StringRef path,
std::string &new_path) const {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
return m_source_mappings.RemapPath(path, new_path);
}
uint32_t Module::GetVersion(uint32_t *versions, uint32_t num_versions) {
ObjectFile *obj_file = GetObjectFile();
if (obj_file)
return obj_file->GetVersion(versions, num_versions);
if (versions != nullptr && num_versions != 0) {
for (uint32_t i = 0; i < num_versions; ++i)
versions[i] = LLDB_INVALID_MODULE_VERSION;
}
return 0;
}
ModuleSP
Module::CreateJITModule(const lldb::ObjectFileJITDelegateSP &delegate_sp) {
if (delegate_sp) {
// Must create a module and place it into a shared pointer before
// we can create an object file since it has a std::weak_ptr back
// to the module, so we need to control the creation carefully in
// this static function
ModuleSP module_sp(new Module());
module_sp->m_objfile_sp =
std::make_shared<ObjectFileJIT>(module_sp, delegate_sp);
if (module_sp->m_objfile_sp) {
// Once we get the object file, update our module with the object file's
// architecture since it might differ in vendor/os if some parts were
// unknown.
module_sp->m_objfile_sp->GetArchitecture(module_sp->m_arch);
}
return module_sp;
}
return ModuleSP();
}
bool Module::GetIsDynamicLinkEditor() {
ObjectFile *obj_file = GetObjectFile();
if (obj_file)
return obj_file->GetIsDynamicLinkEditor();
return false;
}
Status Module::LoadInMemory(Target &target, bool set_pc) {
return m_objfile_sp->LoadInMemory(target, set_pc);
}
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