ObjectFileSP
ObjectFile::FindPlugin (const lldb::ModuleSP &module_sp,
const FileSpec* file,
lldb::offset_t file_offset,
lldb::offset_t file_size,
DataBufferSP &data_sp,
lldb::offset_t &data_offset)
{
ObjectFileSP object_file_sp;
if (module_sp)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"ObjectFile::FindPlugin (module = %s, file = %p, file_offset = 0x%8.8" PRIx64 ", file_size = 0x%8.8" PRIx64 ")",
module_sp->GetFileSpec().GetPath().c_str(),
file, (uint64_t) file_offset, (uint64_t) file_size);
if (file)
{
FileSpec archive_file;
ObjectContainerCreateInstance create_object_container_callback;
const bool file_exists = file->Exists();
if (!data_sp)
{
// We have an object name which most likely means we have
// a .o file in a static archive (.a file). Try and see if
// we have a cached archive first without reading any data
// first
if (file_exists && module_sp->GetObjectName())
{
for (uint32_t idx = 0; (create_object_container_callback = PluginManager::GetObjectContainerCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
std::unique_ptr<ObjectContainer> object_container_ap(create_object_container_callback(module_sp, data_sp, data_offset, file, file_offset, file_size));
if (object_container_ap.get())
object_file_sp = object_container_ap->GetObjectFile(file);
if (object_file_sp.get())
return object_file_sp;
}
}
// Ok, we didn't find any containers that have a named object, now
// lets read the first 512 bytes from the file so the object file
// and object container plug-ins can use these bytes to see if they
// can parse this file.
if (file_size > 0)
{
data_sp = file->ReadFileContents(file_offset, std::min<size_t>(512, file_size));
data_offset = 0;
}
}
if (!data_sp || data_sp->GetByteSize() == 0)
{
// Check for archive file with format "/path/to/archive.a(object.o)"
char path_with_object[PATH_MAX*2];
module_sp->GetFileSpec().GetPath(path_with_object, sizeof(path_with_object));
ConstString archive_object;
const bool must_exist = true;
if (ObjectFile::SplitArchivePathWithObject (path_with_object, archive_file, archive_object, must_exist))
{
file_size = archive_file.GetByteSize();
if (file_size > 0)
{
file = &archive_file;
module_sp->SetFileSpecAndObjectName (archive_file, archive_object);
// Check if this is a object container by iterating through all object
// container plugin instances and then trying to get an object file
// from the container plugins since we had a name. Also, don't read
// ANY data in case there is data cached in the container plug-ins
// (like BSD archives caching the contained objects within an file).
for (uint32_t idx = 0; (create_object_container_callback = PluginManager::GetObjectContainerCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
std::unique_ptr<ObjectContainer> object_container_ap(create_object_container_callback(module_sp, data_sp, data_offset, file, file_offset, file_size));
if (object_container_ap.get())
object_file_sp = object_container_ap->GetObjectFile(file);
if (object_file_sp.get())
return object_file_sp;
}
// We failed to find any cached object files in the container
// plug-ins, so lets read the first 512 bytes and try again below...
data_sp = archive_file.ReadFileContents(file_offset, 512);
}
}
}
if (data_sp && data_sp->GetByteSize() > 0)
{
// Check if this is a normal object file by iterating through
// all object file plugin instances.
ObjectFileCreateInstance create_object_file_callback;
for (uint32_t idx = 0; (create_object_file_callback = PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
object_file_sp.reset (create_object_file_callback(module_sp, data_sp, data_offset, file, file_offset, file_size));
if (object_file_sp.get())
return object_file_sp;
}
// Check if this is a object container by iterating through
// all object container plugin instances and then trying to get
// an object file from the container.
for (uint32_t idx = 0; (create_object_container_callback = PluginManager::GetObjectContainerCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
std::unique_ptr<ObjectContainer> object_container_ap(create_object_container_callback(module_sp, data_sp, data_offset, file, file_offset, file_size));
if (object_container_ap.get())
object_file_sp = object_container_ap->GetObjectFile(file);
if (object_file_sp.get())
return object_file_sp;
}
}
}
}
// We didn't find it, so clear our shared pointer in case it
// contains anything and return an empty shared pointer
object_file_sp.reset();
return object_file_sp;
}
ObjectFileSP
ObjectFile::FindPlugin (const lldb::ModuleSP &module_sp, const FileSpec* file, addr_t file_offset, addr_t file_size, DataBufferSP &file_data_sp)
{
ObjectFileSP object_file_sp;
if (module_sp)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"ObjectFile::FindPlugin (module = %s/%s, file = %p, file_offset = 0x%8.8llx, file_size = 0x%8.8llx)",
module_sp->GetFileSpec().GetDirectory().AsCString(),
module_sp->GetFileSpec().GetFilename().AsCString(),
file, (uint64_t) file_offset, (uint64_t) file_size);
if (file)
{
// Memory map the entire file contents
if (!file_data_sp && file_size > 0)
{
assert (file_offset == 0);
file_data_sp = file->MemoryMapFileContents(file_offset, file_size);
}
if (!file_data_sp || file_data_sp->GetByteSize() == 0)
{
// Check for archive file with format "/path/to/archive.a(object.o)"
char path_with_object[PATH_MAX*2];
module_sp->GetFileSpec().GetPath(path_with_object, sizeof(path_with_object));
FileSpec archive_file;
ConstString archive_object;
if (ObjectFile::SplitArchivePathWithObject (path_with_object, archive_file, archive_object))
{
file_size = archive_file.GetByteSize();
if (file_size > 0)
{
module_sp->SetFileSpecAndObjectName (archive_file, archive_object);
file_data_sp = archive_file.MemoryMapFileContents(file_offset, file_size);
}
}
}
if (file_data_sp && file_data_sp->GetByteSize() > 0)
{
uint32_t idx;
// Check if this is a normal object file by iterating through
// all object file plugin instances.
ObjectFileCreateInstance create_object_file_callback;
for (idx = 0; (create_object_file_callback = PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
object_file_sp.reset (create_object_file_callback(module_sp, file_data_sp, file, file_offset, file_size));
if (object_file_sp.get())
return object_file_sp;
}
// Check if this is a object container by iterating through
// all object container plugin instances and then trying to get
// an object file from the container.
ObjectContainerCreateInstance create_object_container_callback;
for (idx = 0; (create_object_container_callback = PluginManager::GetObjectContainerCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
std::auto_ptr<ObjectContainer> object_container_ap(create_object_container_callback(module_sp, file_data_sp, file, file_offset, file_size));
if (object_container_ap.get())
object_file_sp = object_container_ap->GetObjectFile(file);
if (object_file_sp.get())
return object_file_sp;
}
}
}
}
// We didn't find it, so clear our shared pointer in case it
// contains anything and return an empty shared pointer
object_file_sp.reset();
return object_file_sp;
}
