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 20 #include <libproc.h> 21 #include <mach/mach.h> 22 #include <pthread.h> 23 #include <sys/signal.h> 24 25 #include "PThreadCondition.h" 26 #include "PThreadMutex.h" 27 #include "MachException.h" 28 #include "DNBArch.h" 29 #include "DNBRegisterInfo.h" 30 31 class DNBBreakpoint; 32 class MachProcess; 33 class MachThreadList; 34 35 class MachThread 36 { 37 public: 38 39 MachThread (MachProcess *process, uint64_t unique_thread_id = 0, thread_t mach_port_number = 0); 40 ~MachThread (); 41 42 MachProcess * Process() { return m_process; } 43 const MachProcess * 44 Process() const { return m_process; } 45 nub_process_t ProcessID() const; 46 void Dump(uint32_t index); 47 uint64_t ThreadID() const { return m_unique_id; } 48 thread_t MachPortNumber() const { return m_mach_port_number; } 49 thread_t InferiorThreadID() const; 50 51 uint32_t SequenceID() const { return m_seq_id; } 52 static bool ThreadIDIsValid(uint64_t thread); // The 64-bit system-wide unique thread identifier 53 static bool MachPortNumberIsValid(thread_t thread); // The mach port # for this thread in debugserver namespace 54 void Resume(bool others_stopped); 55 void Suspend(); 56 bool SetSuspendCountBeforeResume(bool others_stopped); 57 bool RestoreSuspendCountAfterStop(); 58 59 bool GetRegisterState(int flavor, bool force); 60 bool SetRegisterState(int flavor); 61 uint64_t GetPC(uint64_t failValue = INVALID_NUB_ADDRESS); // Get program counter 62 bool SetPC(uint64_t value); // Set program counter 63 uint64_t GetSP(uint64_t failValue = INVALID_NUB_ADDRESS); // Get stack pointer 64 65 DNBBreakpoint * CurrentBreakpoint(); 66 uint32_t EnableHardwareBreakpoint (const DNBBreakpoint *breakpoint); 67 uint32_t EnableHardwareWatchpoint (const DNBBreakpoint *watchpoint, bool also_set_on_task); 68 bool DisableHardwareBreakpoint (const DNBBreakpoint *breakpoint); 69 bool DisableHardwareWatchpoint (const DNBBreakpoint *watchpoint, bool also_set_on_task); 70 uint32_t NumSupportedHardwareWatchpoints () const; 71 bool RollbackTransForHWP(); 72 bool FinishTransForHWP(); 73 74 nub_state_t GetState(); 75 void SetState(nub_state_t state); 76 77 void ThreadWillResume (const DNBThreadResumeAction *thread_action, bool others_stopped = false); 78 bool ShouldStop(bool &step_more); 79 bool IsStepping(); 80 bool ThreadDidStop(); 81 bool NotifyException(MachException::Data& exc); 82 const MachException::Data& GetStopException() { return m_stop_exception; } 83 84 uint32_t GetNumRegistersInSet(int regSet) const; 85 const char * GetRegisterSetName(int regSet) const; 86 const DNBRegisterInfo * 87 GetRegisterInfo(int regSet, int regIndex) const; 88 void DumpRegisterState(int regSet); 89 const DNBRegisterSetInfo * 90 GetRegisterSetInfo(nub_size_t *num_reg_sets ) const; 91 bool GetRegisterValue ( uint32_t reg_set_idx, uint32_t reg_idx, DNBRegisterValue *reg_value ); 92 bool SetRegisterValue ( uint32_t reg_set_idx, uint32_t reg_idx, const DNBRegisterValue *reg_value ); 93 nub_size_t GetRegisterContext (void *buf, nub_size_t buf_len); 94 nub_size_t SetRegisterContext (const void *buf, nub_size_t buf_len); 95 void NotifyBreakpointChanged (const DNBBreakpoint *bp) 96 { 97 } 98 99 bool IsUserReady(); 100 struct thread_basic_info * 101 GetBasicInfo (); 102 const char * GetBasicInfoAsString () const; 103 const char * GetName (); 104 105 DNBArchProtocol* 106 GetArchProtocol() 107 { 108 return m_arch_ap.get(); 109 } 110 111 static uint64_t GetGloballyUniqueThreadIDForMachPortID (thread_t mach_port_id); 112 113 protected: 114 static bool GetBasicInfo(thread_t threadID, struct thread_basic_info *basic_info); 115 116 bool 117 GetIdentifierInfo (); 118 119 // const char * 120 // GetDispatchQueueName(); 121 // 122 MachProcess * m_process; // The process that owns this thread 123 uint64_t m_unique_id; // The globally unique ID for this thread (nub_thread_t) 124 thread_t m_mach_port_number; // The mach port # for this thread in debugserver namesp. 125 uint32_t m_seq_id; // A Sequential ID that increments with each new thread 126 nub_state_t m_state; // The state of our process 127 PThreadMutex m_state_mutex; // Multithreaded protection for m_state 128 struct thread_basic_info m_basic_info; // Basic information for a thread used to see if a thread is valid 129 int32_t m_suspend_count; // The current suspend count > 0 means we have suspended m_suspendCount times, 130 // < 0 means we have resumed it m_suspendCount times. 131 MachException::Data m_stop_exception; // The best exception that describes why this thread is stopped 132 std::unique_ptr<DNBArchProtocol> m_arch_ap; // Arch specific information for register state and more 133 const DNBRegisterSetInfo * m_reg_sets; // Register set information for this thread 134 nub_size_t m_num_reg_sets; 135 thread_identifier_info_data_t m_ident_info; 136 struct proc_threadinfo m_proc_threadinfo; 137 std::string m_dispatch_queue_name; 138 139 private: 140 friend class MachThreadList; 141 }; 142 143 typedef std::shared_ptr<MachThread> MachThreadSP; 144 145 #endif 146
