| //===-- ThreadKDP.cpp -------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| |
| #include "ThreadKDP.h" |
| |
| #include "llvm/Support/MachO.h" |
| |
| #include "lldb/Core/ArchSpec.h" |
| #include "lldb/Core/DataExtractor.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/StopInfo.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Unwind.h" |
| #include "lldb/Breakpoint/Watchpoint.h" |
| |
| #include "ProcessKDP.h" |
| #include "ProcessKDPLog.h" |
| #include "RegisterContextKDP_arm.h" |
| #include "RegisterContextKDP_i386.h" |
| #include "RegisterContextKDP_x86_64.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| //---------------------------------------------------------------------- |
| // Thread Registers |
| //---------------------------------------------------------------------- |
| |
| ThreadKDP::ThreadKDP (const lldb::ProcessSP &process_sp, lldb::tid_t tid) : |
| Thread(process_sp, tid), |
| m_thread_name (), |
| m_dispatch_queue_name (), |
| m_thread_dispatch_qaddr (LLDB_INVALID_ADDRESS) |
| { |
| ProcessKDPLog::LogIf(KDP_LOG_THREAD, "%p: ThreadKDP::ThreadKDP (tid = 0x%4.4x)", this, GetID()); |
| } |
| |
| ThreadKDP::~ThreadKDP () |
| { |
| ProcessKDPLog::LogIf(KDP_LOG_THREAD, "%p: ThreadKDP::~ThreadKDP (tid = 0x%4.4x)", this, GetID()); |
| DestroyThread(); |
| } |
| |
| const char * |
| ThreadKDP::GetName () |
| { |
| if (m_thread_name.empty()) |
| return NULL; |
| return m_thread_name.c_str(); |
| } |
| |
| const char * |
| ThreadKDP::GetQueueName () |
| { |
| return NULL; |
| } |
| |
| bool |
| ThreadKDP::WillResume (StateType resume_state) |
| { |
| ClearStackFrames(); |
| // Call the Thread::WillResume first. If we stop at a signal, the stop info |
| // class for signal will set the resume signal that we need below. The signal |
| // stuff obeys the Process::UnixSignal defaults. |
| Thread::WillResume(resume_state); |
| |
| lldb::LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP)); |
| if (log) |
| log->Printf ("Resuming thread: %4.4llx with state: %s.", GetID(), StateAsCString(resume_state)); |
| |
| // ProcessKDP &process = GetKDPProcess(); |
| // switch (resume_state) |
| // { |
| // case eStateSuspended: |
| // case eStateStopped: |
| // // Don't append anything for threads that should stay stopped. |
| // break; |
| // |
| // case eStateRunning: |
| // case eStateStepping: |
| // break; |
| // |
| // default: |
| // break; |
| // } |
| return true; |
| } |
| |
| void |
| ThreadKDP::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 KDPRegisterContext |
| // 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); |
| } |
| |
| void |
| ThreadKDP::ClearStackFrames () |
| { |
| Unwind *unwinder = GetUnwinder (); |
| if (unwinder) |
| unwinder->Clear(); |
| Thread::ClearStackFrames(); |
| } |
| |
| |
| bool |
| ThreadKDP::ThreadIDIsValid (lldb::tid_t thread) |
| { |
| return thread != 0; |
| } |
| |
| void |
| ThreadKDP::Dump(Log *log, uint32_t index) |
| { |
| } |
| |
| |
| bool |
| ThreadKDP::ShouldStop (bool &step_more) |
| { |
| return true; |
| } |
| lldb::RegisterContextSP |
| ThreadKDP::GetRegisterContext () |
| { |
| if (m_reg_context_sp.get() == NULL) |
| m_reg_context_sp = CreateRegisterContextForFrame (NULL); |
| return m_reg_context_sp; |
| } |
| |
| lldb::RegisterContextSP |
| ThreadKDP::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 (CalculateProcess()); |
| if (process_sp) |
| { |
| switch (static_cast<ProcessKDP *>(process_sp.get())->GetCommunication().GetCPUType()) |
| { |
| case llvm::MachO::CPUTypeARM: |
| reg_ctx_sp.reset (new RegisterContextKDP_arm (*this, concrete_frame_idx)); |
| break; |
| case llvm::MachO::CPUTypeI386: |
| reg_ctx_sp.reset (new RegisterContextKDP_i386 (*this, concrete_frame_idx)); |
| break; |
| case llvm::MachO::CPUTypeX86_64: |
| reg_ctx_sp.reset (new RegisterContextKDP_x86_64 (*this, concrete_frame_idx)); |
| break; |
| default: |
| assert (!"Add CPU type support in KDP"); |
| break; |
| } |
| } |
| } |
| else if (m_unwinder_ap.get()) |
| reg_ctx_sp = m_unwinder_ap->CreateRegisterContextForFrame (frame); |
| return reg_ctx_sp; |
| } |
| |
| lldb::StopInfoSP |
| ThreadKDP::GetPrivateStopReason () |
| { |
| ProcessSP process_sp (GetProcess()); |
| if (process_sp) |
| { |
| const uint32_t process_stop_id = process_sp->GetStopID(); |
| if (m_thread_stop_reason_stop_id != process_stop_id || |
| (m_actual_stop_info_sp && !m_actual_stop_info_sp->IsValid())) |
| { |
| // TODO: can we query the initial state of the thread here? |
| // For now I am just going to pretend that a SIGSTOP happened. |
| |
| SetStopInfo(StopInfo::CreateStopReasonWithSignal (*this, SIGSTOP)); |
| |
| // If GetKDPProcess().SetThreadStopInfo() doesn't find a stop reason |
| // for this thread, then m_actual_stop_info_sp will not ever contain |
| // a valid stop reason and the "m_actual_stop_info_sp->IsValid() == false" |
| // check will never be able to tell us if we have the correct stop info |
| // for this thread and we will continually send qThreadStopInfo packets |
| // down to the remote KDP server, so we need to keep our own notion |
| // of the stop ID that m_actual_stop_info_sp is valid for (even if it |
| // contains nothing). We use m_thread_stop_reason_stop_id for this below. |
| // m_thread_stop_reason_stop_id = process_stop_id; |
| // m_actual_stop_info_sp.reset(); |
| |
| } |
| } |
| return m_actual_stop_info_sp; |
| } |
| |
| |