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1 /* Fault handler information.  MacOSX version.
2 Copyright (C) 1993-1999, 2002-2003  Bruno Haible <clisp.org at bruno>
3 Copyright (C) 2003  Paolo Bonzini <gnu.org at bonzini>
4
5 Used under BSD license with permission from Paolo Bonzini and Bruno Haible,
6 2005-03-10:
7
8 http://sourceforge.net/mailarchive/message.php?msg_name=200503102200.32002.bruno%40clisp.org
9
10 Modified for Factor by Slava Pestov */
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <errno.h>
14 #include <signal.h>
15
16 #include <mach/mach.h>
17 #include <mach/mach_error.h>
18 #include <mach/thread_status.h>
19 #include <mach/exception.h>
20 #include <mach/task.h>
21 #include <pthread.h>
22
23 /* This is not defined in any header, although documented.  */
24
25 /* http://web.mit.edu/darwin/src/modules/xnu/osfmk/man/exc_server.html says:
26    The exc_server function is the MIG generated server handling function
27    to handle messages from the kernel relating to the occurrence of an
28    exception in a thread. Such messages are delivered to the exception port
29    set via thread_set_exception_ports or task_set_exception_ports. When an
30    exception occurs in a thread, the thread sends an exception message to its
31    exception port, blocking in the kernel waiting for the receipt of a reply.
32    The exc_server function performs all necessary argument handling for this
33    kernel message and calls catch_exception_raise, catch_exception_raise_state
34    or catch_exception_raise_state_identity, which should handle the exception.
35    If the called routine returns KERN_SUCCESS, a reply message will be sent,
36    allowing the thread to continue from the point of the exception; otherwise,
37    no reply message is sent and the called routine must have dealt with the
38    exception thread directly.  */
39 extern "C" boolean_t exc_server (mach_msg_header_t *request_msg, mach_msg_header_t *reply_msg);
40
41
42 /* http://web.mit.edu/darwin/src/modules/xnu/osfmk/man/catch_exception_raise.html
43    These functions are defined in this file, and called by exc_server.
44    FIXME: What needs to be done when this code is put into a shared library? */
45 extern "C"
46 kern_return_t
47 catch_exception_raise (mach_port_t exception_port,
48                        mach_port_t thread,
49                        mach_port_t task,
50                        exception_type_t exception,
51                        exception_data_t code,
52                        mach_msg_type_number_t code_count);
53 extern "C"
54 kern_return_t
55 catch_exception_raise_state (mach_port_t exception_port,
56                              exception_type_t exception,
57                              exception_data_t code,
58                              mach_msg_type_number_t code_count,
59                              thread_state_flavor_t *flavor,
60                              thread_state_t in_state,
61                              mach_msg_type_number_t in_state_count,
62                              thread_state_t out_state,
63                              mach_msg_type_number_t *out_state_count);
64
65 extern "C"
66 kern_return_t
67 catch_exception_raise_state_identity (mach_port_t exception_port,
68                                       mach_port_t thread,
69                                       mach_port_t task,
70                                       exception_type_t exception,
71                                       exception_data_t code,
72                                       mach_msg_type_number_t codeCnt,
73                                       thread_state_flavor_t *flavor,
74                                       thread_state_t in_state,
75                                       mach_msg_type_number_t in_state_count,
76                                       thread_state_t out_state,
77                                       mach_msg_type_number_t *out_state_count);
78
79 namespace factor
80 {
81
82 void mach_initialize (void);
83
84 }