ObjectFile::ObjectFile (const lldb::ModuleSP &module_sp,
const ProcessSP &process_sp,
lldb::addr_t header_addr,
DataBufferSP& header_data_sp) :
ModuleChild (module_sp),
m_file (),
m_type (eTypeInvalid),
m_strata (eStrataInvalid),
m_file_offset (0),
m_length (0),
m_data (),
m_unwind_table (*this),
m_process_wp (process_sp),
m_memory_addr (header_addr),
m_sections_ap (),
m_symtab_ap (),
m_symtab_unified_ap (),
m_symtab_unified_revisionid (0)
{
if (header_data_sp)
m_data.SetData (header_data_sp, 0, header_data_sp->GetByteSize());
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT));
if (log)
{
log->Printf ("%p ObjectFile::ObjectFile() module = %p (%s), process = %p, header_addr = 0x%" PRIx64,
this,
module_sp.get(),
module_sp->GetSpecificationDescription().c_str(),
process_sp.get(),
m_memory_addr);
}
}
ObjectFile::ObjectFile (const lldb::ModuleSP &module_sp,
const ProcessSP &process_sp,
lldb::addr_t header_addr,
DataBufferSP& header_data_sp) :
ModuleChild (module_sp),
m_file (),
m_type (eTypeInvalid),
m_strata (eStrataInvalid),
m_offset (header_addr),
m_length (0),
m_data (),
m_unwind_table (*this),
m_process_wp (process_sp),
m_memory_addr (header_addr)
{
if (header_data_sp)
m_data.SetData (header_data_sp, 0, header_data_sp->GetByteSize());
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT));
if (log)
{
log->Printf ("%p ObjectFile::ObjectFile () module = %s/%s, process = %p, header_addr = 0x%llx\n",
this,
module_sp->GetFileSpec().GetDirectory().AsCString(),
module_sp->GetFileSpec().GetFilename().AsCString(),
process_sp.get(),
m_offset);
}
}
//----------------------------------------------------------------------
// Assign the data for this object to be a subrange of the shared data in
// "data_sp" starting "data_offset" bytes into "data_sp" and ending
// "data_length" bytes later. If "data_offset" is not a valid offset into
// "data_sp", then this object will contain no bytes. If "data_offset" is
// within "data_sp" yet "data_length" is too large, the length will be capped
// at the number of bytes remaining in "data_sp". A ref counted pointer to the
// data in "data_sp" will be made in this object IF the number of bytes this
// object refers to in greater than zero (if at least one byte was available
// starting at "data_offset") to ensure the data stays around as long as it is
// needed. The address size and endian swap settings will remain unchanged from
// their current settings.
//----------------------------------------------------------------------
uint32_t DataEncoder::SetData(const DataBufferSP &data_sp, uint32_t data_offset,
uint32_t data_length) {
m_start = m_end = nullptr;
if (data_length > 0) {
m_data_sp = data_sp;
if (data_sp) {
const size_t data_size = data_sp->GetByteSize();
if (data_offset < data_size) {
m_start = data_sp->GetBytes() + data_offset;
const size_t bytes_left = data_size - data_offset;
// Cap the length of we asked for too many
if (data_length <= bytes_left)
m_end = m_start + data_length; // We got all the bytes we wanted
else
m_end = m_start + bytes_left; // Not all the bytes requested were
// available in the shared data
}
}
}
uint32_t new_size = GetByteSize();
// Don't hold a shared pointer to the data buffer if we don't share any valid
// bytes in the shared buffer.
if (new_size == 0)
m_data_sp.reset();
return new_size;
}
bool
RegisterContextMemory::WriteAllRegisterValues (const DataBufferSP &data_sp)
{
if (m_reg_data_addr != LLDB_INVALID_ADDRESS)
{
ProcessSP process_sp (CalculateProcess());
if (process_sp)
{
Error error;
SetAllRegisterValid (false);
if (process_sp->WriteMemory(m_reg_data_addr, data_sp->GetBytes(), data_sp->GetByteSize(), error) == data_sp->GetByteSize())
return true;
}
}
return false;
}
bool RegisterContextPOSIXProcessMonitor_powerpc::WriteAllRegisterValues(
const DataBufferSP &data_sp) {
bool success = false;
if (data_sp && data_sp->GetByteSize() == REG_CONTEXT_SIZE) {
uint8_t *src = data_sp->GetBytes();
if (src) {
::memcpy(&m_gpr_powerpc, src, GetGPRSize());
if (WriteGPR()) {
src += GetGPRSize();
::memcpy(&m_fpr_powerpc, src, sizeof(m_fpr_powerpc));
success = WriteFPR();
}
}
}
return success;
}
bool
RegisterContextPOSIXProcessMonitor_x86_64::WriteAllRegisterValues(const DataBufferSP &data_sp)
{
bool success = false;
if (data_sp && data_sp->GetByteSize() == REG_CONTEXT_SIZE)
{
uint8_t *src = data_sp->GetBytes();
if (src)
{
::memcpy (&m_gpr, src, GetGPRSize());
if (WriteGPR())
{
src += GetGPRSize();
if (GetFPRType() == eFXSAVE)
::memcpy (&m_fpr.xstate.fxsave, src, sizeof(m_fpr.xstate.fxsave));
if (GetFPRType() == eXSAVE)
::memcpy (&m_fpr.xstate.xsave, src, sizeof(m_fpr.xstate.xsave));
success = WriteFPR();
if (success)
{
success = true;
if (GetFPRType() == eXSAVE)
{
ByteOrder byte_order = GetByteOrder();
// Parse the YMM register content from the register halves.
for (uint32_t reg = fpu_ymm0; success && reg <= fpu_ymm15; ++reg)
success = CopyYMMtoXSTATE(reg, byte_order);
}
}
}
}
}
return success;
}
static DWARFExpression MakeLocationExpressionInternal(lldb::ModuleSP module,
StreamWriter &&writer) {
const ArchSpec &architecture = module->GetArchitecture();
ByteOrder byte_order = architecture.GetByteOrder();
uint32_t address_size = architecture.GetAddressByteSize();
uint32_t byte_size = architecture.GetDataByteSize();
if (byte_order == eByteOrderInvalid || address_size == 0)
return DWARFExpression(nullptr);
RegisterKind register_kind = eRegisterKindDWARF;
StreamBuffer<32> stream(Stream::eBinary, address_size, byte_order);
if (!writer(stream, register_kind))
return DWARFExpression(nullptr);
DataBufferSP buffer =
std::make_shared<DataBufferHeap>(stream.GetData(), stream.GetSize());
DataExtractor extractor(buffer, byte_order, address_size, byte_size);
DWARFExpression result(module, extractor, nullptr, 0, buffer->GetByteSize());
result.SetRegisterKind(register_kind);
return result;
}
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;
}