| //===-- ThreadGDBRemote.cpp -------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| |
| #include "ThreadGDBRemote.h" |
| |
| #include "lldb/Breakpoint/Watchpoint.h" |
| #include "lldb/Core/ArchSpec.h" |
| #include "lldb/Core/DataExtractor.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Target/Platform.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/StopInfo.h" |
| #include "lldb/Target/SystemRuntime.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Unwind.h" |
| |
| #include "ProcessGDBRemote.h" |
| #include "ProcessGDBRemoteLog.h" |
| #include "Utility/StringExtractorGDBRemote.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| //---------------------------------------------------------------------- |
| // Thread Registers |
| //---------------------------------------------------------------------- |
| |
| ThreadGDBRemote::ThreadGDBRemote (Process &process, lldb::tid_t tid) : |
| Thread(process, tid), |
| m_thread_name (), |
| m_dispatch_queue_name (), |
| m_thread_dispatch_qaddr (LLDB_INVALID_ADDRESS) |
| { |
| ProcessGDBRemoteLog::LogIf(GDBR_LOG_THREAD, "%p: ThreadGDBRemote::ThreadGDBRemote (pid = %i, tid = 0x%4.4x)", |
| this, |
| process.GetID(), |
| GetID()); |
| } |
| |
| ThreadGDBRemote::~ThreadGDBRemote () |
| { |
| ProcessSP process_sp(GetProcess()); |
| ProcessGDBRemoteLog::LogIf(GDBR_LOG_THREAD, "%p: ThreadGDBRemote::~ThreadGDBRemote (pid = %i, tid = 0x%4.4x)", |
| this, |
| process_sp ? process_sp->GetID() : LLDB_INVALID_PROCESS_ID, |
| GetID()); |
| DestroyThread(); |
| } |
| |
| const char * |
| ThreadGDBRemote::GetName () |
| { |
| if (m_thread_name.empty()) |
| return NULL; |
| return m_thread_name.c_str(); |
| } |
| |
| |
| const char * |
| ThreadGDBRemote::GetQueueName () |
| { |
| // Always re-fetch the dispatch queue name since it can change |
| |
| if (m_thread_dispatch_qaddr != 0 || m_thread_dispatch_qaddr != LLDB_INVALID_ADDRESS) |
| { |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| SystemRuntime *runtime = process_sp->GetSystemRuntime (); |
| if (runtime) |
| { |
| m_dispatch_queue_name = runtime->GetQueueNameFromThreadQAddress (m_thread_dispatch_qaddr); |
| } |
| if (m_dispatch_queue_name.length() > 0) |
| { |
| return m_dispatch_queue_name.c_str(); |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| queue_id_t |
| ThreadGDBRemote::GetQueueID () |
| { |
| if (m_thread_dispatch_qaddr != 0 || m_thread_dispatch_qaddr != LLDB_INVALID_ADDRESS) |
| { |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| SystemRuntime *runtime = process_sp->GetSystemRuntime (); |
| if (runtime) |
| { |
| return runtime->GetQueueIDFromThreadQAddress (m_thread_dispatch_qaddr); |
| } |
| } |
| } |
| return LLDB_INVALID_QUEUE_ID; |
| } |
| |
| QueueSP |
| ThreadGDBRemote::GetQueue () |
| { |
| queue_id_t queue_id = GetQueueID(); |
| QueueSP queue; |
| if (queue_id != LLDB_INVALID_QUEUE_ID) |
| { |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| queue = process_sp->GetQueueList().FindQueueByID (queue_id); |
| } |
| } |
| return queue; |
| } |
| |
| addr_t |
| ThreadGDBRemote::GetQueueLibdispatchQueueAddress () |
| { |
| addr_t dispatch_queue_t_addr = LLDB_INVALID_ADDRESS; |
| if (m_thread_dispatch_qaddr != 0 || m_thread_dispatch_qaddr != LLDB_INVALID_ADDRESS) |
| { |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| SystemRuntime *runtime = process_sp->GetSystemRuntime (); |
| if (runtime) |
| { |
| dispatch_queue_t_addr = runtime->GetLibdispatchQueueAddressFromThreadQAddress (m_thread_dispatch_qaddr); |
| } |
| } |
| } |
| return dispatch_queue_t_addr; |
| } |
| |
| StructuredData::ObjectSP |
| ThreadGDBRemote::FetchThreadExtendedInfo () |
| { |
| StructuredData::ObjectSP object_sp; |
| const lldb::user_id_t tid = GetProtocolID(); |
| Log *log(lldb_private::GetLogIfAnyCategoriesSet (GDBR_LOG_THREAD)); |
| if (log) |
| log->Printf ("Fetching extended information for thread %4.4" PRIx64, tid); |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); |
| object_sp = gdb_process->GetExtendedInfoForThread (tid); |
| } |
| return object_sp; |
| } |
| |
| void |
| ThreadGDBRemote::WillResume (StateType resume_state) |
| { |
| int signo = GetResumeSignal(); |
| const lldb::user_id_t tid = GetProtocolID(); |
| Log *log(lldb_private::GetLogIfAnyCategoriesSet (GDBR_LOG_THREAD)); |
| if (log) |
| log->Printf ("Resuming thread: %4.4" PRIx64 " with state: %s.", tid, StateAsCString(resume_state)); |
| |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); |
| switch (resume_state) |
| { |
| case eStateSuspended: |
| case eStateStopped: |
| // Don't append anything for threads that should stay stopped. |
| break; |
| |
| case eStateRunning: |
| if (gdb_process->GetUnixSignals().SignalIsValid (signo)) |
| gdb_process->m_continue_C_tids.push_back(std::make_pair(tid, signo)); |
| else |
| gdb_process->m_continue_c_tids.push_back(tid); |
| break; |
| |
| case eStateStepping: |
| if (gdb_process->GetUnixSignals().SignalIsValid (signo)) |
| gdb_process->m_continue_S_tids.push_back(std::make_pair(tid, signo)); |
| else |
| gdb_process->m_continue_s_tids.push_back(tid); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| } |
| |
| void |
| ThreadGDBRemote::RefreshStateAfterStop() |
| { |
| // Invalidate all registers in our register context. We don't set "force" to |
| // true because the stop reply packet might have had some register values |
| // that were expedited and these will already be copied into the register |
| // context by the time this function gets called. The GDBRemoteRegisterContext |
| // class has been made smart enough to detect when it needs to invalidate |
| // which registers are valid by putting hooks in the register read and |
| // register supply functions where they check the process stop ID and do |
| // the right thing. |
| const bool force = false; |
| GetRegisterContext()->InvalidateIfNeeded (force); |
| } |
| |
| bool |
| ThreadGDBRemote::ThreadIDIsValid (lldb::tid_t thread) |
| { |
| return thread != 0; |
| } |
| |
| void |
| ThreadGDBRemote::Dump(Log *log, uint32_t index) |
| { |
| } |
| |
| |
| bool |
| ThreadGDBRemote::ShouldStop (bool &step_more) |
| { |
| return true; |
| } |
| lldb::RegisterContextSP |
| ThreadGDBRemote::GetRegisterContext () |
| { |
| if (m_reg_context_sp.get() == NULL) |
| m_reg_context_sp = CreateRegisterContextForFrame (NULL); |
| return m_reg_context_sp; |
| } |
| |
| lldb::RegisterContextSP |
| ThreadGDBRemote::CreateRegisterContextForFrame (StackFrame *frame) |
| { |
| lldb::RegisterContextSP reg_ctx_sp; |
| uint32_t concrete_frame_idx = 0; |
| |
| if (frame) |
| concrete_frame_idx = frame->GetConcreteFrameIndex (); |
| |
| |
| if (concrete_frame_idx == 0) |
| { |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); |
| // read_all_registers_at_once will be true if 'p' packet is not supported. |
| bool read_all_registers_at_once = !gdb_process->GetGDBRemote().GetpPacketSupported (GetID()); |
| reg_ctx_sp.reset (new GDBRemoteRegisterContext (*this, concrete_frame_idx, gdb_process->m_register_info, read_all_registers_at_once)); |
| } |
| } |
| else |
| { |
| Unwind *unwinder = GetUnwinder (); |
| if (unwinder) |
| reg_ctx_sp = unwinder->CreateRegisterContextForFrame (frame); |
| } |
| return reg_ctx_sp; |
| } |
| |
| bool |
| ThreadGDBRemote::PrivateSetRegisterValue (uint32_t reg, StringExtractor &response) |
| { |
| GDBRemoteRegisterContext *gdb_reg_ctx = static_cast<GDBRemoteRegisterContext *>(GetRegisterContext ().get()); |
| assert (gdb_reg_ctx); |
| return gdb_reg_ctx->PrivateSetRegisterValue (reg, response); |
| } |
| |
| bool |
| ThreadGDBRemote::CalculateStopInfo () |
| { |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| StringExtractorGDBRemote stop_packet; |
| ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); |
| if (gdb_process->GetGDBRemote().GetThreadStopInfo(GetProtocolID(), stop_packet)) |
| return gdb_process->SetThreadStopInfo (stop_packet) == eStateStopped; |
| } |
| return false; |
| } |
| |
| |
