1 /*
2 * Copyright (c) 1999-2010 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28 /*
29 * catch_exception_raise will be implemented by user programs
30 * This implementation is provided to resolve the reference in
31 * exc_server().
32 */
33
34 #include <mach/boolean.h>
35 #include <mach/message.h>
36 #include <mach/exception.h>
37 #include <mach/mig_errors.h>
38
39 #include "abort.h"
40 #include "exc_catcher.h"
41
42 __private_extern__ kern_return_t
internal_catch_exception_raise(mach_port_t exception_port,mach_port_t thread,mach_port_t task,exception_type_t exception,exception_data_t code,mach_msg_type_number_t codeCnt)43 internal_catch_exception_raise(
44 mach_port_t exception_port,
45 mach_port_t thread,
46 mach_port_t task,
47 exception_type_t exception,
48 exception_data_t code,
49 mach_msg_type_number_t codeCnt)
50 {
51 #if defined(__DYNAMIC__)
52 static _libkernel_exc_raise_func_t exc_raise_func = (void*)-1;
53
54 if (exc_raise_func == ((void*)-1) && _dlsym) {
55 exc_raise_func = _dlsym(RTLD_DEFAULT, "catch_exception_raise");
56 }
57 if (exc_raise_func == 0) {
58 /* The user hasn't defined catch_exception_raise in their binary */
59 abort();
60 }
61 return (*exc_raise_func)(exception_port, thread, task, exception, code, codeCnt);
62 #else
63 extern kern_return_t catch_exception_raise(mach_port_t, mach_port_t, mach_port_t, exception_type_t, exception_data_t, mach_msg_type_number_t);
64 return catch_exception_raise(exception_port, thread, task, exception, code, codeCnt);
65 #endif
66 }
67