ModuleSP DynamicLoader::GetTargetExecutable() {
Target &target = m_process->GetTarget();
ModuleSP executable = target.GetExecutableModule();
if (executable) {
if (FileSystem::Instance().Exists(executable->GetFileSpec())) {
ModuleSpec module_spec(executable->GetFileSpec(),
executable->GetArchitecture());
auto module_sp = std::make_shared<Module>(module_spec);
// Check if the executable has changed and set it to the target
// executable if they differ.
if (module_sp && module_sp->GetUUID().IsValid() &&
executable->GetUUID().IsValid()) {
if (module_sp->GetUUID() != executable->GetUUID())
executable.reset();
} else if (executable->FileHasChanged()) {
executable.reset();
}
if (!executable) {
executable = target.GetOrCreateModule(module_spec, true /* notify */);
if (executable.get() != target.GetExecutableModulePointer()) {
// Don't load dependent images since we are in dyld where we will
// know and find out about all images that are loaded
target.SetExecutableModule(executable, eLoadDependentsNo);
}
}
}
}
return executable;
}
/// Checks to see if the target module has changed, updates the target
/// accordingly and returns the target executable module.
ModuleSP
DynamicLoaderHexagonDYLD::GetTargetExecutable()
{
Target &target = m_process->GetTarget();
ModuleSP executable = target.GetExecutableModule();
// There is no executable
if (! executable.get())
return executable;
// The target executable file does not exits
if (! executable->GetFileSpec().Exists())
return executable;
// Prep module for loading
ModuleSpec module_spec(executable->GetFileSpec(), executable->GetArchitecture());
ModuleSP module_sp (new Module (module_spec));
// Check if the executable has changed and set it to the target executable if they differ.
if (module_sp.get() && module_sp->GetUUID().IsValid() && executable->GetUUID().IsValid())
{
// if the executable has changed ??
if (module_sp->GetUUID() != executable->GetUUID())
executable.reset();
}
else if (executable->FileHasChanged())
executable.reset();
if ( executable.get( ) )
return executable;
// TODO: What case is this code used?
executable = target.GetSharedModule(module_spec);
if (executable.get() != target.GetExecutableModulePointer())
{
// Don't load dependent images since we are in dyld where we will know
// and find out about all images that are loaded
const bool get_dependent_images = false;
target.SetExecutableModule(executable, get_dependent_images);
}
return executable;
}
//--------------------------------------------------------------
/// Unary predicate function object callback.
//--------------------------------------------------------------
bool
operator () (const ModuleSP& module_sp) const
{
if (m_file_spec_ptr)
{
if (m_file_spec_is_platform)
{
if (!FileSpec::Equal (*m_file_spec_ptr,
module_sp->GetPlatformFileSpec(),
m_file_spec_compare_basename_only))
return false;
}
else
{
if (!FileSpec::Equal (*m_file_spec_ptr,
module_sp->GetFileSpec(),
m_file_spec_compare_basename_only))
return false;
}
}
if (m_arch_ptr && m_arch_ptr->IsValid())
{
if (module_sp->GetArchitecture() != *m_arch_ptr)
return false;
}
if (m_uuid_ptr && m_uuid_ptr->IsValid())
{
if (module_sp->GetUUID() != *m_uuid_ptr)
return false;
}
if (m_object_name)
{
if (module_sp->GetObjectName() != *m_object_name)
return false;
}
return true;
}
Error
PlatformRemoteiOS::GetSharedModule (const ModuleSpec &module_spec,
ModuleSP &module_sp,
const FileSpecList *module_search_paths_ptr,
ModuleSP *old_module_sp_ptr,
bool *did_create_ptr)
{
// For iOS, the SDK files are all cached locally on the host
// system. So first we ask for the file in the cached SDK,
// then we attempt to get a shared module for the right architecture
// with the right UUID.
const FileSpec &platform_file = module_spec.GetFileSpec();
FileSpec local_file;
const UUID *module_uuid_ptr = module_spec.GetUUIDPtr();
Error error (GetSymbolFile (platform_file, module_uuid_ptr, local_file));
if (error.Success())
{
error = ResolveExecutable (local_file, module_spec.GetArchitecture(), module_sp, NULL);
if (module_sp && ((module_uuid_ptr == NULL) || (module_sp->GetUUID() == *module_uuid_ptr)))
{
//printf ("found in user specified SDK\n");
error.Clear();
return error;
}
char platform_file_path[PATH_MAX];
if (platform_file.GetPath(platform_file_path, sizeof(platform_file_path)))
{
FileSpec local_file;
const uint32_t num_sdk_infos = m_sdk_directory_infos.size();
// Try the last SDK index if it is set as most files from an SDK
// will tend to be valid in that same SDK.
if (m_last_module_sdk_idx < num_sdk_infos)
{
if (GetFileInSDK (platform_file_path, m_last_module_sdk_idx, local_file))
{
//printf ("sdk[%u] last: '%s'\n", m_last_module_sdk_idx, local_file.GetPath().c_str());
module_sp.reset();
error = ResolveExecutable (local_file,
module_spec.GetArchitecture(),
module_sp,
NULL);
if (module_sp && ((module_uuid_ptr == NULL) || (module_sp->GetUUID() == *module_uuid_ptr)))
{
//printf ("sdk[%u] last found\n", m_last_module_sdk_idx);
error.Clear();
return error;
}
}
}
// First try for an exact match of major, minor and update
for (uint32_t sdk_idx=0; sdk_idx<num_sdk_infos; ++sdk_idx)
{
if (m_last_module_sdk_idx == sdk_idx)
{
// Skip the last module SDK index if we already searched
// it above
continue;
}
if (GetFileInSDK (platform_file_path, sdk_idx, local_file))
{
//printf ("sdk[%u]: '%s'\n", sdk_idx, local_file.GetPath().c_str());
error = ResolveExecutable (local_file,
module_spec.GetArchitecture(),
module_sp,
NULL);
if (module_sp && ((module_uuid_ptr == NULL) || (module_sp->GetUUID() == *module_uuid_ptr)))
{
// Remember the index of the last SDK that we found a file
// in in case the wrong SDK was selected.
m_last_module_sdk_idx = sdk_idx;
//printf ("sdk[%u]: found (setting last to %u)\n", sdk_idx, m_last_module_sdk_idx);
error.Clear();
return error;
}
}
}
}
// Not the module we are looking for... Nothing to see here...
module_sp.reset();
}
else
{
// This may not be an SDK-related module. Try whether we can bring in the thing to our local cache.
error = GetSharedModuleWithLocalCache(module_spec, module_sp, module_search_paths_ptr, old_module_sp_ptr, did_create_ptr);
if (error.Success())
return error;
else
error.Clear(); // Clear the error and fall-through.
}
const bool always_create = false;
error = ModuleList::GetSharedModule (module_spec,
module_sp,
module_search_paths_ptr,
old_module_sp_ptr,
did_create_ptr,
always_create);
if (module_sp)
module_sp->SetPlatformFileSpec(platform_file);
return error;
}
Error
ModuleList::GetSharedModule(const ModuleSpec &module_spec,
ModuleSP &module_sp,
const FileSpecList *module_search_paths_ptr,
ModuleSP *old_module_sp_ptr,
bool *did_create_ptr,
bool always_create)
{
ModuleList &shared_module_list = GetSharedModuleList ();
Mutex::Locker locker(shared_module_list.m_modules_mutex);
char path[PATH_MAX];
Error error;
module_sp.reset();
if (did_create_ptr)
*did_create_ptr = false;
if (old_module_sp_ptr)
old_module_sp_ptr->reset();
const UUID *uuid_ptr = module_spec.GetUUIDPtr();
const FileSpec &module_file_spec = module_spec.GetFileSpec();
const ArchSpec &arch = module_spec.GetArchitecture();
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
if (!always_create)
{
ModuleList matching_module_list;
const size_t num_matching_modules = shared_module_list.FindModules (module_spec, matching_module_list);
if (num_matching_modules > 0)
{
for (size_t module_idx = 0; module_idx < num_matching_modules; ++module_idx)
{
module_sp = matching_module_list.GetModuleAtIndex(module_idx);
// Make sure the file for the module hasn't been modified
if (module_sp->FileHasChanged())
{
if (old_module_sp_ptr && !*old_module_sp_ptr)
*old_module_sp_ptr = module_sp;
Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_MODULES));
if (log != nullptr)
log->Printf("module changed: %p, removing from global module list",
static_cast<void*>(module_sp.get()));
shared_module_list.Remove (module_sp);
module_sp.reset();
}
else
{
// The module matches and the module was not modified from
// when it was last loaded.
return error;
}
}
}
}
if (module_sp)
return error;
module_sp.reset (new Module (module_spec));
// Make sure there are a module and an object file since we can specify
// a valid file path with an architecture that might not be in that file.
// By getting the object file we can guarantee that the architecture matches
if (module_sp->GetObjectFile())
{
// If we get in here we got the correct arch, now we just need
// to verify the UUID if one was given
if (uuid_ptr && *uuid_ptr != module_sp->GetUUID())
{
module_sp.reset();
}
else
{
if (module_sp->GetObjectFile() && module_sp->GetObjectFile()->GetType() == ObjectFile::eTypeStubLibrary)
{
module_sp.reset();
}
else
{
if (did_create_ptr)
{
*did_create_ptr = true;
}
shared_module_list.ReplaceEquivalent(module_sp);
return error;
}
}
}
else
{
module_sp.reset();
}
if (module_search_paths_ptr)
{
const auto num_directories = module_search_paths_ptr->GetSize();
for (size_t idx = 0; idx < num_directories; ++idx)
{
auto search_path_spec = module_search_paths_ptr->GetFileSpecAtIndex(idx);
if (!search_path_spec.ResolvePath())
continue;
if (!search_path_spec.Exists() || !search_path_spec.IsDirectory())
continue;
search_path_spec.AppendPathComponent(module_spec.GetFileSpec().GetFilename().AsCString());
if (!search_path_spec.Exists())
continue;
auto resolved_module_spec(module_spec);
resolved_module_spec.GetFileSpec() = search_path_spec;
module_sp.reset (new Module (resolved_module_spec));
if (module_sp->GetObjectFile())
{
// If we get in here we got the correct arch, now we just need
// to verify the UUID if one was given
if (uuid_ptr && *uuid_ptr != module_sp->GetUUID())
{
module_sp.reset();
}
else
{
if (module_sp->GetObjectFile()->GetType() == ObjectFile::eTypeStubLibrary)
{
module_sp.reset();
}
else
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.ReplaceEquivalent(module_sp);
return Error();
}
}
}
else
{
module_sp.reset();
}
}
}
// Either the file didn't exist where at the path, or no path was given, so
// we now have to use more extreme measures to try and find the appropriate
// module.
// Fixup the incoming path in case the path points to a valid file, yet
// the arch or UUID (if one was passed in) don't match.
ModuleSpec located_binary_modulespec = Symbols::LocateExecutableObjectFile (module_spec);
// Don't look for the file if it appears to be the same one we already
// checked for above...
if (located_binary_modulespec.GetFileSpec() != module_file_spec)
{
if (!located_binary_modulespec.GetFileSpec().Exists())
{
located_binary_modulespec.GetFileSpec().GetPath(path, sizeof(path));
if (path[0] == '\0')
module_file_spec.GetPath(path, sizeof(path));
// How can this check ever be true? This branch it is false, and we haven't modified file_spec.
if (located_binary_modulespec.GetFileSpec().Exists())
{
std::string uuid_str;
if (uuid_ptr && uuid_ptr->IsValid())
uuid_str = uuid_ptr->GetAsString();
if (arch.IsValid())
{
if (!uuid_str.empty())
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture and UUID %s", path, arch.GetArchitectureName(), uuid_str.c_str());
else
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture.", path, arch.GetArchitectureName());
}
}
else
{
error.SetErrorStringWithFormat("'%s' does not exist", path);
}
if (error.Fail())
module_sp.reset();
return error;
}
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
ModuleSpec platform_module_spec(module_spec);
platform_module_spec.GetFileSpec() = located_binary_modulespec.GetFileSpec();
platform_module_spec.GetPlatformFileSpec() = located_binary_modulespec.GetFileSpec();
platform_module_spec.GetSymbolFileSpec() = located_binary_modulespec.GetSymbolFileSpec();
ModuleList matching_module_list;
if (shared_module_list.FindModules (platform_module_spec, matching_module_list) > 0)
{
module_sp = matching_module_list.GetModuleAtIndex(0);
// If we didn't have a UUID in mind when looking for the object file,
// then we should make sure the modification time hasn't changed!
if (platform_module_spec.GetUUIDPtr() == nullptr)
{
TimeValue file_spec_mod_time(located_binary_modulespec.GetFileSpec().GetModificationTime());
if (file_spec_mod_time.IsValid())
{
if (file_spec_mod_time != module_sp->GetModificationTime())
{
if (old_module_sp_ptr)
*old_module_sp_ptr = module_sp;
shared_module_list.Remove (module_sp);
module_sp.reset();
}
}
}
}
if (!module_sp)
{
module_sp.reset (new Module (platform_module_spec));
// Make sure there are a module and an object file since we can specify
// a valid file path with an architecture that might not be in that file.
// By getting the object file we can guarantee that the architecture matches
if (module_sp && module_sp->GetObjectFile())
{
if (module_sp->GetObjectFile()->GetType() == ObjectFile::eTypeStubLibrary)
{
module_sp.reset();
}
else
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.ReplaceEquivalent(module_sp);
}
}
else
{
located_binary_modulespec.GetFileSpec().GetPath(path, sizeof(path));
if (located_binary_modulespec.GetFileSpec())
{
if (arch.IsValid())
error.SetErrorStringWithFormat("unable to open %s architecture in '%s'", arch.GetArchitectureName(), path);
else
error.SetErrorStringWithFormat("unable to open '%s'", path);
}
else
{
std::string uuid_str;
if (uuid_ptr && uuid_ptr->IsValid())
uuid_str = uuid_ptr->GetAsString();
if (!uuid_str.empty())
error.SetErrorStringWithFormat("cannot locate a module for UUID '%s'", uuid_str.c_str());
else
error.SetErrorStringWithFormat("cannot locate a module");
}
}
}
}
return error;
}
Error
ModuleList::GetSharedModule
(
const FileSpec& in_file_spec,
const ArchSpec& arch,
const lldb_private::UUID *uuid_ptr,
const ConstString *object_name_ptr,
off_t object_offset,
ModuleSP &module_sp,
ModuleSP *old_module_sp_ptr,
bool *did_create_ptr,
bool always_create
)
{
ModuleList &shared_module_list = GetSharedModuleList ();
Mutex::Locker locker(shared_module_list.m_modules_mutex);
char path[PATH_MAX];
char uuid_cstr[64];
Error error;
module_sp.reset();
if (did_create_ptr)
*did_create_ptr = false;
if (old_module_sp_ptr)
old_module_sp_ptr->reset();
// First just try and get the file where it purports to be (path in
// in_file_spec), then check and uuid.
if (in_file_spec)
{
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
if (always_create == false)
{
ModuleList matching_module_list;
const size_t num_matching_modules = shared_module_list.FindModules (&in_file_spec, &arch, NULL, object_name_ptr, matching_module_list);
if (num_matching_modules > 0)
{
for (uint32_t module_idx = 0; module_idx < num_matching_modules; ++module_idx)
{
module_sp = matching_module_list.GetModuleAtIndex(module_idx);
if (uuid_ptr && uuid_ptr->IsValid())
{
// We found the module we were looking for.
if (module_sp->GetUUID() == *uuid_ptr)
return error;
}
else
{
// If we didn't have a UUID in mind when looking for the object file,
// then we should make sure the modification time hasn't changed!
TimeValue file_spec_mod_time(in_file_spec.GetModificationTime());
if (file_spec_mod_time.IsValid())
{
if (file_spec_mod_time == module_sp->GetModificationTime())
return error;
}
}
if (old_module_sp_ptr && !old_module_sp_ptr->get())
*old_module_sp_ptr = module_sp;
shared_module_list.Remove (module_sp);
module_sp.reset();
}
}
}
if (module_sp)
return error;
else
{
#if defined ENABLE_MODULE_SP_LOGGING
ModuleSP logging_module_sp (new Module (in_file_spec, arch, object_name_ptr, object_offset), ModuleSharedPtrLogger, (void *)ConstString("a.out").GetCString());
module_sp = logging_module_sp;
#else
module_sp.reset (new Module (in_file_spec, arch, object_name_ptr, object_offset));
#endif
// Make sure there are a module and an object file since we can specify
// a valid file path with an architecture that might not be in that file.
// By getting the object file we can guarantee that the architecture matches
if (module_sp && module_sp->GetObjectFile())
{
// If we get in here we got the correct arch, now we just need
// to verify the UUID if one was given
if (uuid_ptr && *uuid_ptr != module_sp->GetUUID())
module_sp.reset();
else
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.Append(module_sp);
return error;
}
}
}
}
// Either the file didn't exist where at the path, or no path was given, so
// we now have to use more extreme measures to try and find the appropriate
// module.
// Fixup the incoming path in case the path points to a valid file, yet
// the arch or UUID (if one was passed in) don't match.
FileSpec file_spec = Symbols::LocateExecutableObjectFile (in_file_spec ? &in_file_spec : NULL,
arch.IsValid() ? &arch : NULL,
uuid_ptr);
// Don't look for the file if it appears to be the same one we already
// checked for above...
if (file_spec != in_file_spec)
{
if (!file_spec.Exists())
{
file_spec.GetPath(path, sizeof(path));
if (file_spec.Exists())
{
if (uuid_ptr && uuid_ptr->IsValid())
uuid_ptr->GetAsCString(uuid_cstr, sizeof (uuid_cstr));
else
uuid_cstr[0] = '\0';
if (arch.IsValid())
{
if (uuid_cstr[0])
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture and UUID %s", path, arch.GetArchitectureName(), uuid_cstr);
else
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture.", path, arch.GetArchitectureName());
}
}
else
{
error.SetErrorStringWithFormat("'%s' does not exist", path);
}
return error;
}
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
ModuleList matching_module_list;
if (shared_module_list.FindModules (&file_spec, &arch, uuid_ptr, object_name_ptr, matching_module_list) > 0)
{
module_sp = matching_module_list.GetModuleAtIndex(0);
// If we didn't have a UUID in mind when looking for the object file,
// then we should make sure the modification time hasn't changed!
if (uuid_ptr == NULL)
{
TimeValue file_spec_mod_time(file_spec.GetModificationTime());
if (file_spec_mod_time.IsValid())
{
if (file_spec_mod_time != module_sp->GetModificationTime())
{
if (old_module_sp_ptr)
*old_module_sp_ptr = module_sp;
shared_module_list.Remove (module_sp);
module_sp.reset();
}
}
}
}
if (module_sp.get() == NULL)
{
#if defined ENABLE_MODULE_SP_LOGGING
ModuleSP logging_module_sp (new Module (file_spec, arch, object_name_ptr, object_offset), ModuleSharedPtrLogger, 0);
module_sp = logging_module_sp;
#else
module_sp.reset (new Module (file_spec, arch, object_name_ptr, object_offset));
#endif
// Make sure there are a module and an object file since we can specify
// a valid file path with an architecture that might not be in that file.
// By getting the object file we can guarantee that the architecture matches
if (module_sp && module_sp->GetObjectFile())
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.Append(module_sp);
}
else
{
file_spec.GetPath(path, sizeof(path));
if (file_spec)
{
if (arch.IsValid())
error.SetErrorStringWithFormat("unable to open %s architecture in '%s'", arch.GetArchitectureName(), path);
else
error.SetErrorStringWithFormat("unable to open '%s'", path);
}
else
{
if (uuid_ptr && uuid_ptr->IsValid())
uuid_ptr->GetAsCString(uuid_cstr, sizeof (uuid_cstr));
else
uuid_cstr[0] = '\0';
if (uuid_cstr[0])
error.SetErrorStringWithFormat("cannot locate a module for UUID '%s'", uuid_cstr);
else
error.SetErrorStringWithFormat("cannot locate a module");
}
}
}
}
return error;
}