1 //===-- MachThread.h --------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Created by Greg Clayton on 6/19/07. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef __MachThread_h__ 15 #define __MachThread_h__ 16 17 #include <string> 18 #include <vector> 19 #include <tr1/memory> // for std::tr1::shared_ptr 20 21 #include <libproc.h> 22 #include <mach/mach.h> 23 #include <pthread.h> 24 #include <sys/signal.h> 25 26 #include "PThreadCondition.h" 27 #include "PThreadMutex.h" 28 #include "MachException.h" 29 #include "DNBArch.h" 30 #include "DNBRegisterInfo.h" 31 32 class DNBBreakpoint; 33 class MachProcess; 34 class MachThreadList; 35 36 class MachThread 37 { 38 public: 39 40 MachThread (MachProcess *process, thread_t thread = 0); 41 ~MachThread (); 42 43 MachProcess * Process() { return m_process; } 44 const MachProcess * 45 Process() const { return m_process; } 46 nub_process_t ProcessID() const; 47 void Dump(uint32_t index); 48 thread_t ThreadID() const { return m_tid; } 49 thread_t InferiorThreadID() const; 50 51 uint32_t SequenceID() const { return m_seq_id; } 52 static bool ThreadIDIsValid(thread_t thread); 53 void Resume(bool others_stopped); 54 void Suspend(); 55 bool SetSuspendCountBeforeResume(bool others_stopped); 56 bool RestoreSuspendCountAfterStop(); 57 58 bool GetRegisterState(int flavor, bool force); 59 bool SetRegisterState(int flavor); 60 uint64_t GetPC(uint64_t failValue = INVALID_NUB_ADDRESS); // Get program counter 61 bool SetPC(uint64_t value); // Set program counter 62 uint64_t GetSP(uint64_t failValue = INVALID_NUB_ADDRESS); // Get stack pointer 63 64 nub_break_t CurrentBreakpoint(); 65 uint32_t EnableHardwareBreakpoint (const DNBBreakpoint *breakpoint); 66 uint32_t EnableHardwareWatchpoint (const DNBBreakpoint *watchpoint); 67 bool DisableHardwareBreakpoint (const DNBBreakpoint *breakpoint); 68 bool DisableHardwareWatchpoint (const DNBBreakpoint *watchpoint); 69 70 nub_state_t GetState(); 71 void SetState(nub_state_t state); 72 73 void ThreadWillResume (const DNBThreadResumeAction *thread_action, bool others_stopped = false); 74 bool ShouldStop(bool &step_more); 75 bool IsStepping(); 76 bool ThreadDidStop(); 77 bool NotifyException(MachException::Data& exc); 78 const MachException::Data& GetStopException() { return m_stop_exception; } 79 80 uint32_t GetNumRegistersInSet(int regSet) const; 81 const char * GetRegisterSetName(int regSet) const; 82 const DNBRegisterInfo * 83 GetRegisterInfo(int regSet, int regIndex) const; 84 void DumpRegisterState(int regSet); 85 const DNBRegisterSetInfo * 86 GetRegisterSetInfo(nub_size_t *num_reg_sets ) const; 87 bool GetRegisterValue ( uint32_t reg_set_idx, uint32_t reg_idx, DNBRegisterValue *reg_value ); 88 bool SetRegisterValue ( uint32_t reg_set_idx, uint32_t reg_idx, const DNBRegisterValue *reg_value ); 89 nub_size_t GetRegisterContext (void *buf, nub_size_t buf_len); 90 nub_size_t SetRegisterContext (const void *buf, nub_size_t buf_len); 91 void NotifyBreakpointChanged (const DNBBreakpoint *bp) 92 { 93 } 94 95 bool IsUserReady(); 96 struct thread_basic_info * 97 GetBasicInfo (); 98 const char * GetBasicInfoAsString () const; 99 const char * GetName (); 100 101 DNBArchProtocol* 102 GetArchProtocol() 103 { 104 return m_arch_ap.get(); 105 } 106 107 protected: 108 static bool GetBasicInfo(thread_t threadID, struct thread_basic_info *basic_info); 109 110 bool 111 GetIdentifierInfo (); 112 113 // const char * 114 // GetDispatchQueueName(); 115 // 116 MachProcess * m_process; // The process that owns this thread 117 thread_t m_tid; // The thread port for this thread 118 uint32_t m_seq_id; // A Sequential ID that increments with each new thread 119 nub_state_t m_state; // The state of our process 120 PThreadMutex m_state_mutex; // Multithreaded protection for m_state 121 nub_break_t m_break_id; // Breakpoint that this thread is (stopped)/was(running) at (NULL for none) 122 struct thread_basic_info m_basic_info; // Basic information for a thread used to see if a thread is valid 123 int32_t m_suspend_count; // The current suspend count > 0 means we have suspended m_suspendCount times, 124 // < 0 means we have resumed it m_suspendCount times. 125 MachException::Data m_stop_exception; // The best exception that describes why this thread is stopped 126 std::auto_ptr<DNBArchProtocol> m_arch_ap; // Arch specific information for register state and more 127 const DNBRegisterSetInfo * m_reg_sets; // Register set information for this thread 128 nub_size_t m_num_reg_sets; 129 #ifdef THREAD_IDENTIFIER_INFO_COUNT 130 thread_identifier_info_data_t m_ident_info; 131 struct proc_threadinfo m_proc_threadinfo; 132 std::string m_dispatch_queue_name; 133 #endif 134 135 private: 136 friend class MachThreadList; 137 void HardwareWatchpointStateChanged(); // Provide a chance to update the global view of the hardware watchpoint state 138 }; 139 140 typedef std::tr1::shared_ptr<MachThread> MachThreadSP; 141 142 #endif 143