1 //===-- MachException.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 6/18/07. 11 // 12 //===----------------------------------------------------------------------===// 13 14 15 #ifndef __MachException_h__ 16 #define __MachException_h__ 17 18 #include <mach/mach.h> 19 #include <vector> 20 #include "DNBConfig.h" 21 22 class MachProcess; 23 class PThreadMutex; 24 25 typedef union MachMessageTag 26 { 27 mach_msg_header_t hdr; 28 char data[1024]; 29 } MachMessage; 30 31 32 class MachException 33 { 34 public: 35 36 struct PortInfo 37 { 38 exception_mask_t mask; // the exception mask for this device which may be a subset of EXC_MASK_ALL... 39 exception_mask_t masks[EXC_TYPES_COUNT]; 40 mach_port_t ports[EXC_TYPES_COUNT]; 41 exception_behavior_t behaviors[EXC_TYPES_COUNT]; 42 thread_state_flavor_t flavors[EXC_TYPES_COUNT]; 43 mach_msg_type_number_t count; 44 45 kern_return_t Save(task_t task); 46 kern_return_t Restore(task_t task); 47 }; 48 49 struct Data 50 { 51 task_t task_port; 52 thread_t thread_port; 53 exception_type_t exc_type; 54 std::vector<mach_exception_data_type_t> exc_data; 55 Data() : 56 task_port(TASK_NULL), 57 thread_port(THREAD_NULL), 58 exc_type(0), 59 exc_data() 60 { 61 } 62 63 void Clear() 64 { 65 task_port = TASK_NULL; 66 thread_port = THREAD_NULL; 67 exc_type = 0; 68 exc_data.clear(); 69 } 70 bool IsValid() const 71 { 72 return task_port != TASK_NULL && 73 thread_port != THREAD_NULL && 74 exc_type != 0; 75 } 76 // Return the SoftSignal for this MachException data, or zero if there is none 77 int SoftSignal() const 78 { 79 if (exc_type == EXC_SOFTWARE && exc_data.size() == 2 && exc_data[0] == EXC_SOFT_SIGNAL) 80 return exc_data[1]; 81 return 0; 82 } 83 bool IsBreakpoint() const 84 { 85 return (exc_type == EXC_BREAKPOINT) || ((exc_type == EXC_SOFTWARE) && exc_data[0] == 1); 86 } 87 void Dump() const; 88 void DumpStopReason() const; 89 bool GetStopInfo(struct DNBThreadStopInfo *stop_info) const; 90 }; 91 92 struct Message 93 { 94 MachMessage exc_msg; 95 MachMessage reply_msg; 96 Data state; 97 98 Message() : 99 state() 100 { 101 memset(&exc_msg, 0, sizeof(exc_msg)); 102 memset(&reply_msg, 0, sizeof(reply_msg)); 103 } 104 bool CatchExceptionRaise(task_t task); 105 void Dump() const; 106 kern_return_t Reply (MachProcess *process, int signal); 107 kern_return_t Receive( mach_port_t receive_port, 108 mach_msg_option_t options, 109 mach_msg_timeout_t timeout, 110 mach_port_t notify_port = MACH_PORT_NULL); 111 112 typedef std::vector<Message> collection; 113 typedef collection::iterator iterator; 114 typedef collection::const_iterator const_iterator; 115 }; 116 117 enum 118 { 119 e_actionForward, // Forward signal to inferior process 120 e_actionStop, // Stop when this signal is received 121 }; 122 struct Action 123 { 124 task_t task_port; // Set to TASK_NULL for any TASK 125 thread_t thread_port; // Set to THREAD_NULL for any thread 126 exception_type_t exc_mask; // Mach exception mask to watch for 127 std::vector<mach_exception_data_type_t> exc_data_mask; // Mask to apply to exception data, or empty to ignore exc_data value for exception 128 std::vector<mach_exception_data_type_t> exc_data_value; // Value to compare to exception data after masking, or empty to ignore exc_data value for exception 129 uint8_t flags; // Action flags describing what to do with the exception 130 }; 131 static const char *Name(exception_type_t exc_type); 132 }; 133 134 #endif 135
