1 //===-- MachException.h -----------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Created by Greg Clayton on 6/18/07.
12 //===----------------------------------------------------------------------===//
14 #ifndef __MachException_h__
15 #define __MachException_h__
17 #include <mach/mach.h>
20 #include "lldb/Host/Debug.h"
21 #include "lldb/lldb-private-forward.h"
22 #include "lldb/lldb-types.h"
24 namespace lldb_private {
25 namespace process_darwin {
27 typedef union MachMessageTag {
28 mach_msg_header_t hdr;
35 exception_mask_t mask; // the exception mask for this device which may be a
36 // subset of EXC_MASK_ALL...
37 exception_mask_t masks[EXC_TYPES_COUNT];
38 mach_port_t ports[EXC_TYPES_COUNT];
39 exception_behavior_t behaviors[EXC_TYPES_COUNT];
40 thread_state_flavor_t flavors[EXC_TYPES_COUNT];
41 mach_msg_type_number_t count;
43 Status Save(task_t task);
45 Status Restore(task_t task);
51 exception_type_t exc_type;
52 std::vector<mach_exception_data_type_t> exc_data;
54 : task_port(TASK_NULL), thread_port(THREAD_NULL), exc_type(0),
58 task_port = TASK_NULL;
59 thread_port = THREAD_NULL;
64 bool IsValid() const {
65 return task_port != TASK_NULL && thread_port != THREAD_NULL &&
69 // Return the SoftSignal for this MachException data, or zero if there is
71 int SoftSignal() const {
72 if (exc_type == EXC_SOFTWARE && exc_data.size() == 2 &&
73 exc_data[0] == EXC_SOFT_SIGNAL)
74 return static_cast<int>(exc_data[1]);
78 bool IsBreakpoint() const {
79 return (exc_type == EXC_BREAKPOINT ||
80 ((exc_type == EXC_SOFTWARE) && exc_data[0] == 1));
83 bool GetStopInfo(ThreadStopInfo *stop_info, const UnixSignals &signals,
84 Stream &stream) const;
89 MachMessage reply_msg;
93 memset(&exc_msg, 0, sizeof(exc_msg));
94 memset(&reply_msg, 0, sizeof(reply_msg));
97 bool CatchExceptionRaise(task_t task);
99 Status Reply(::pid_t inferior_pid, task_t inferior_task, int signal);
101 Status Receive(mach_port_t receive_port, mach_msg_option_t options,
102 mach_msg_timeout_t timeout,
103 mach_port_t notify_port = MACH_PORT_NULL);
105 void Dump(Stream &stream) const;
107 typedef std::vector<Message> collection;
108 typedef collection::iterator iterator;
109 typedef collection::const_iterator const_iterator;
113 e_actionForward, // Forward signal to inferior process
114 e_actionStop, // Stop when this signal is received
117 task_t task_port; // Set to TASK_NULL for any TASK
118 thread_t thread_port; // Set to THREAD_NULL for any thread
119 exception_type_t exc_mask; // Mach exception mask to watch for
120 std::vector<mach_exception_data_type_t> exc_data_mask; // Mask to apply to
121 // exception data, or
123 // exc_data value for
125 std::vector<mach_exception_data_type_t> exc_data_value; // Value to compare
131 uint8_t flags; // Action flags describing what to do with the exception
134 static const char *Name(exception_type_t exc_type);
137 } // namespace process_darwin
138 } // namespace lldb_private