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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"
// C Includes
// C++ Includes
// Other libraries and framework includes
#include "llvm/Support/raw_os_ostream.h"
#include "llvm/Support/Signals.h"
// Project includes
#include "lldb/Core/AddressResolverFileLine.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/DataBuffer.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/ModuleList.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/RegularExpression.h"
#include "lldb/Core/Section.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Core/Timer.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/Symbols.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/ScriptInterpreter.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/SymbolFile.h"
#include "lldb/Symbol/SymbolVendor.h"
#include "lldb/Symbol/TypeSystem.h"
#include "lldb/Target/Language.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/SectionLoadList.h"
#include "lldb/Target/Target.h"
#include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h"
#include "Plugins/Language/ObjC/ObjCLanguage.h"
#include "lldb/Symbol/TypeMap.h"
#include "Plugins/ObjectFile/JIT/ObjectFileJIT.h"
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", __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_mutex(),
m_mod_time(),
m_arch(),
m_uuid(),
m_file(),
m_platform_file(),
m_remote_install_file(),
m_symfile_spec(),
m_object_name(),
m_object_offset(),
m_object_mod_time(),
m_objfile_sp(),
m_symfile_ap(),
m_type_system_map(),
m_source_mappings(),
m_sections_ap(),
m_did_load_objfile(false),
m_did_load_symbol_vendor(false),
m_did_parse_uuid(false),
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 = module_spec.GetFileSpec().GetModificationTime();
else if (matching_module_spec.GetFileSpec())
m_mod_time = matching_module_spec.GetFileSpec().GetModificationTime();
// 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 TimeValue *object_mod_time_ptr)
: m_mutex(),
m_mod_time(file_spec.GetModificationTime()),
m_arch(arch),
m_uuid(),
m_file(file_spec),
m_platform_file(),
m_remote_install_file(),
m_symfile_spec(),
m_object_name(),
m_object_offset(object_offset),
m_object_mod_time(),
m_objfile_sp(),
m_symfile_ap(),
m_type_system_map(),
m_source_mappings(),
m_sections_ap(),
m_did_load_objfile(false),
m_did_load_symbol_vendor(false),
m_did_parse_uuid(false),
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;
if (object_mod_time_ptr)
m_object_mod_time = *object_mod_time_ptr;
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_mutex(),
m_mod_time(),
m_arch(),
m_uuid(),
m_file(),
m_platform_file(),
m_remote_install_file(),
m_symfile_spec(),
m_object_name(),
m_object_offset(0),
m_object_mod_time(),
m_objfile_sp(),
m_symfile_ap(),
m_type_system_map(),
m_source_mappings(),
m_sections_ap(),
m_did_load_objfile(false),
m_did_load_symbol_vendor(false),
m_did_parse_uuid(false),
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, Error &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;
std::unique_ptr<DataBufferHeap> data_ap (new DataBufferHeap (size_to_read, 0));
Error 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.SetCString (s.GetData());
// 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);
Timer scoped_timer(__PRETTY_FUNCTION__,
"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);
Timer scoped_timer(__PRETTY_FUNCTION__, "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);
Timer scoped_timer(__PRETTY_FUNCTION__,
"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;
}
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)
{
ConstString lookup_name;
uint32_t lookup_name_type_mask = 0;
bool match_name_after_lookup = false;
Module::PrepareForFunctionNameLookup (name,
name_type_mask,
eLanguageTypeUnknown, // TODO: add support
lookup_name,
lookup_name_type_mask,
match_name_after_lookup);
if (symbols)
{
symbols->FindFunctions(lookup_name,
parent_decl_ctx,
lookup_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(lookup_name, lookup_name_type_mask, sc_list);
}
}
if (match_name_after_lookup)
{
SymbolContext sc;
size_t i = old_size;
while (i < sc_list.GetSize())
{
if (sc_list.GetContextAtIndex(i, sc))
{
const char *func_name = sc.GetFunctionName().GetCString();
if (func_name && strstr(func_name, name.GetCString()) == nullptr)
{
// Remove the current context
sc_list.RemoveContextAtIndex(i);
// Don't increment i and continue in the loop
continue;
}
}
++i;
}
}
}
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)
{
Timer scoped_timer(__PRETTY_FUNCTION__, __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();
std::string type_scope;
std::string 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
if (type_scope.size() >= 2 && type_scope[0] == ':' && type_scope[1] == ':')
{
type_scope.erase(0,2);
exact_match = true;
}
ConstString type_basename_const_str (type_basename.c_str());
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_name_cstr), 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)
{
Timer scoped_timer(__PRETTY_FUNCTION__, __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 = file.GetModificationTime();
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.GetString().c_str());
}
}
bool
Module::FileHasChanged () const
{
if (!m_file_has_changed)
m_file_has_changed = (m_file.GetModificationTime() != 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.GetString().c_str());
}
}
}
}
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.GetString().c_str());
}
}
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.GetString().c_str());
}
}
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.c_str());
}
log->PutCString(log_message.GetString().c_str());
}
}
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())
{
Timer scoped_timer(__PRETTY_FUNCTION__,
"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.reset(new SectionList());
return m_sections_ap.get();
}
const Symbol *
Module::FindFirstSymbolWithNameAndType (const ConstString &name, SymbolType symbol_type)
{
Timer scoped_timer(__PRETTY_FUNCTION__,
"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)
{
Timer scoped_timer(__PRETTY_FUNCTION__,
"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.
Timer scoped_timer(__PRETTY_FUNCTION__,
"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.
Timer scoped_timer(__PRETTY_FUNCTION__,
"Module::FindSymbolsMatchingRegExAndType (regex = %s, type = %i)",
regex.GetText(),
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::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 (file.IsDirectory())
{
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, Error& 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 (const char *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;
}
void
Module::PrepareForFunctionNameLookup (const ConstString &name,
uint32_t name_type_mask,
LanguageType language,
ConstString &lookup_name,
uint32_t &lookup_name_type_mask,
bool &match_name_after_lookup)
{
const char *name_cstr = name.GetCString();
lookup_name_type_mask = eFunctionNameTypeNone;
match_name_after_lookup = false;
llvm::StringRef basename;
llvm::StringRef context;
if (name_type_mask & eFunctionNameTypeAuto)
{
if (CPlusPlusLanguage::IsCPPMangledName (name_cstr))
lookup_name_type_mask = eFunctionNameTypeFull;
else if ((language == eLanguageTypeUnknown ||
Language::LanguageIsObjC(language)) &&
ObjCLanguage::IsPossibleObjCMethodName (name_cstr))
lookup_name_type_mask = eFunctionNameTypeFull;
else if (Language::LanguageIsC(language))
{
lookup_name_type_mask = eFunctionNameTypeFull;
}
else
{
if ((language == eLanguageTypeUnknown ||
Language::LanguageIsObjC(language)) &&
ObjCLanguage::IsPossibleObjCSelector(name_cstr))
lookup_name_type_mask |= eFunctionNameTypeSelector;
CPlusPlusLanguage::MethodName cpp_method (name);
basename = cpp_method.GetBasename();
if (basename.empty())
{
if (CPlusPlusLanguage::ExtractContextAndIdentifier (name_cstr, context, basename))
lookup_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase);
else
lookup_name_type_mask |= eFunctionNameTypeFull;
}
else
{
lookup_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase);
}
}
}
else
{
lookup_name_type_mask = name_type_mask;
if (lookup_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
lookup_name_type_mask &= ~(eFunctionNameTypeBase);
if (lookup_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 (lookup_name_type_mask & eFunctionNameTypeSelector)
{
if (!ObjCLanguage::IsPossibleObjCSelector(name_cstr))
{
lookup_name_type_mask &= ~(eFunctionNameTypeSelector);
if (lookup_name_type_mask == eFunctionNameTypeNone)
return;
}
}
}
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
lookup_name.SetString(basename);
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"
lookup_name = name;
match_name_after_lookup = false;
}
}
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.reset (new 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;
}
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