ThreadGDBRemote.cpp revision 254721
1254721Semaste//===-- ThreadGDBRemote.cpp -------------------------------------*- C++ -*-===// 2254721Semaste// 3254721Semaste// The LLVM Compiler Infrastructure 4254721Semaste// 5254721Semaste// This file is distributed under the University of Illinois Open Source 6254721Semaste// License. See LICENSE.TXT for details. 7254721Semaste// 8254721Semaste//===----------------------------------------------------------------------===// 9254721Semaste 10254721Semaste 11254721Semaste#include "ThreadGDBRemote.h" 12254721Semaste 13254721Semaste#include "lldb/Core/ArchSpec.h" 14254721Semaste#include "lldb/Core/DataExtractor.h" 15254721Semaste#include "lldb/Core/StreamString.h" 16254721Semaste#include "lldb/Core/State.h" 17254721Semaste#include "lldb/Target/Process.h" 18254721Semaste#include "lldb/Target/RegisterContext.h" 19254721Semaste#include "lldb/Target/StopInfo.h" 20254721Semaste#include "lldb/Target/Target.h" 21254721Semaste#include "lldb/Target/Unwind.h" 22254721Semaste#include "lldb/Breakpoint/Watchpoint.h" 23254721Semaste 24254721Semaste#include "ProcessGDBRemote.h" 25254721Semaste#include "ProcessGDBRemoteLog.h" 26254721Semaste#include "Utility/StringExtractorGDBRemote.h" 27254721Semaste 28254721Semasteusing namespace lldb; 29254721Semasteusing namespace lldb_private; 30254721Semaste 31254721Semaste//---------------------------------------------------------------------- 32254721Semaste// Thread Registers 33254721Semaste//---------------------------------------------------------------------- 34254721Semaste 35254721SemasteThreadGDBRemote::ThreadGDBRemote (Process &process, lldb::tid_t tid) : 36254721Semaste Thread(process, tid), 37254721Semaste m_thread_name (), 38254721Semaste m_dispatch_queue_name (), 39254721Semaste m_thread_dispatch_qaddr (LLDB_INVALID_ADDRESS) 40254721Semaste{ 41254721Semaste ProcessGDBRemoteLog::LogIf(GDBR_LOG_THREAD, "%p: ThreadGDBRemote::ThreadGDBRemote (pid = %i, tid = 0x%4.4x)", 42254721Semaste this, 43254721Semaste process.GetID(), 44254721Semaste GetID()); 45254721Semaste} 46254721Semaste 47254721SemasteThreadGDBRemote::~ThreadGDBRemote () 48254721Semaste{ 49254721Semaste ProcessSP process_sp(GetProcess()); 50254721Semaste ProcessGDBRemoteLog::LogIf(GDBR_LOG_THREAD, "%p: ThreadGDBRemote::~ThreadGDBRemote (pid = %i, tid = 0x%4.4x)", 51254721Semaste this, 52254721Semaste process_sp ? process_sp->GetID() : LLDB_INVALID_PROCESS_ID, 53254721Semaste GetID()); 54254721Semaste DestroyThread(); 55254721Semaste} 56254721Semaste 57254721Semasteconst char * 58254721SemasteThreadGDBRemote::GetName () 59254721Semaste{ 60254721Semaste if (m_thread_name.empty()) 61254721Semaste return NULL; 62254721Semaste return m_thread_name.c_str(); 63254721Semaste} 64254721Semaste 65254721Semaste 66254721Semasteconst char * 67254721SemasteThreadGDBRemote::GetQueueName () 68254721Semaste{ 69254721Semaste // Always re-fetch the dispatch queue name since it can change 70254721Semaste 71254721Semaste if (m_thread_dispatch_qaddr != 0 || m_thread_dispatch_qaddr != LLDB_INVALID_ADDRESS) 72254721Semaste { 73254721Semaste ProcessSP process_sp (GetProcess()); 74254721Semaste if (process_sp) 75254721Semaste { 76254721Semaste ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); 77254721Semaste return gdb_process->GetDispatchQueueNameForThread (m_thread_dispatch_qaddr, m_dispatch_queue_name); 78254721Semaste } 79254721Semaste } 80254721Semaste return NULL; 81254721Semaste} 82254721Semaste 83254721Semastevoid 84254721SemasteThreadGDBRemote::WillResume (StateType resume_state) 85254721Semaste{ 86254721Semaste int signo = GetResumeSignal(); 87254721Semaste const lldb::user_id_t tid = GetProtocolID(); 88254721Semaste Log *log(lldb_private::GetLogIfAnyCategoriesSet (GDBR_LOG_THREAD)); 89254721Semaste if (log) 90254721Semaste log->Printf ("Resuming thread: %4.4" PRIx64 " with state: %s.", tid, StateAsCString(resume_state)); 91254721Semaste 92254721Semaste ProcessSP process_sp (GetProcess()); 93254721Semaste if (process_sp) 94254721Semaste { 95254721Semaste ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); 96254721Semaste switch (resume_state) 97254721Semaste { 98254721Semaste case eStateSuspended: 99254721Semaste case eStateStopped: 100254721Semaste // Don't append anything for threads that should stay stopped. 101254721Semaste break; 102254721Semaste 103254721Semaste case eStateRunning: 104254721Semaste if (gdb_process->GetUnixSignals().SignalIsValid (signo)) 105254721Semaste gdb_process->m_continue_C_tids.push_back(std::make_pair(tid, signo)); 106254721Semaste else 107254721Semaste gdb_process->m_continue_c_tids.push_back(tid); 108254721Semaste break; 109254721Semaste 110254721Semaste case eStateStepping: 111254721Semaste if (gdb_process->GetUnixSignals().SignalIsValid (signo)) 112254721Semaste gdb_process->m_continue_S_tids.push_back(std::make_pair(tid, signo)); 113254721Semaste else 114254721Semaste gdb_process->m_continue_s_tids.push_back(tid); 115254721Semaste break; 116254721Semaste 117254721Semaste default: 118254721Semaste break; 119254721Semaste } 120254721Semaste } 121254721Semaste} 122254721Semaste 123254721Semastevoid 124254721SemasteThreadGDBRemote::RefreshStateAfterStop() 125254721Semaste{ 126254721Semaste // Invalidate all registers in our register context. We don't set "force" to 127254721Semaste // true because the stop reply packet might have had some register values 128254721Semaste // that were expedited and these will already be copied into the register 129254721Semaste // context by the time this function gets called. The GDBRemoteRegisterContext 130254721Semaste // class has been made smart enough to detect when it needs to invalidate 131254721Semaste // which registers are valid by putting hooks in the register read and 132254721Semaste // register supply functions where they check the process stop ID and do 133254721Semaste // the right thing. 134254721Semaste const bool force = false; 135254721Semaste GetRegisterContext()->InvalidateIfNeeded (force); 136254721Semaste} 137254721Semaste 138254721Semastebool 139254721SemasteThreadGDBRemote::ThreadIDIsValid (lldb::tid_t thread) 140254721Semaste{ 141254721Semaste return thread != 0; 142254721Semaste} 143254721Semaste 144254721Semastevoid 145254721SemasteThreadGDBRemote::Dump(Log *log, uint32_t index) 146254721Semaste{ 147254721Semaste} 148254721Semaste 149254721Semaste 150254721Semastebool 151254721SemasteThreadGDBRemote::ShouldStop (bool &step_more) 152254721Semaste{ 153254721Semaste return true; 154254721Semaste} 155254721Semastelldb::RegisterContextSP 156254721SemasteThreadGDBRemote::GetRegisterContext () 157254721Semaste{ 158254721Semaste if (m_reg_context_sp.get() == NULL) 159254721Semaste m_reg_context_sp = CreateRegisterContextForFrame (NULL); 160254721Semaste return m_reg_context_sp; 161254721Semaste} 162254721Semaste 163254721Semastelldb::RegisterContextSP 164254721SemasteThreadGDBRemote::CreateRegisterContextForFrame (StackFrame *frame) 165254721Semaste{ 166254721Semaste lldb::RegisterContextSP reg_ctx_sp; 167254721Semaste const bool read_all_registers_at_once = false; 168254721Semaste uint32_t concrete_frame_idx = 0; 169254721Semaste 170254721Semaste if (frame) 171254721Semaste concrete_frame_idx = frame->GetConcreteFrameIndex (); 172254721Semaste 173254721Semaste 174254721Semaste if (concrete_frame_idx == 0) 175254721Semaste { 176254721Semaste ProcessSP process_sp (GetProcess()); 177254721Semaste if (process_sp) 178254721Semaste { 179254721Semaste ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); 180254721Semaste reg_ctx_sp.reset (new GDBRemoteRegisterContext (*this, concrete_frame_idx, gdb_process->m_register_info, read_all_registers_at_once)); 181254721Semaste } 182254721Semaste } 183254721Semaste else 184254721Semaste { 185254721Semaste Unwind *unwinder = GetUnwinder (); 186254721Semaste if (unwinder) 187254721Semaste reg_ctx_sp = unwinder->CreateRegisterContextForFrame (frame); 188254721Semaste } 189254721Semaste return reg_ctx_sp; 190254721Semaste} 191254721Semaste 192254721Semastebool 193254721SemasteThreadGDBRemote::PrivateSetRegisterValue (uint32_t reg, StringExtractor &response) 194254721Semaste{ 195254721Semaste GDBRemoteRegisterContext *gdb_reg_ctx = static_cast<GDBRemoteRegisterContext *>(GetRegisterContext ().get()); 196254721Semaste assert (gdb_reg_ctx); 197254721Semaste return gdb_reg_ctx->PrivateSetRegisterValue (reg, response); 198254721Semaste} 199254721Semaste 200254721Semastebool 201254721SemasteThreadGDBRemote::CalculateStopInfo () 202254721Semaste{ 203254721Semaste ProcessSP process_sp (GetProcess()); 204254721Semaste if (process_sp) 205254721Semaste { 206254721Semaste StringExtractorGDBRemote stop_packet; 207254721Semaste ProcessGDBRemote *gdb_process = static_cast<ProcessGDBRemote *>(process_sp.get()); 208254721Semaste if (gdb_process->GetGDBRemote().GetThreadStopInfo(GetProtocolID(), stop_packet)) 209254721Semaste return gdb_process->SetThreadStopInfo (stop_packet) == eStateStopped; 210254721Semaste } 211254721Semaste return false; 212254721Semaste} 213254721Semaste 214254721Semaste 215