darling-xnu/libsyscall/mach/exc_catcher.c
2023-05-16 21:41:14 -07:00

67 lines
2.4 KiB
C

/*
* Copyright (c) 1999-2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* catch_exception_raise will be implemented by user programs
* This implementation is provided to resolve the reference in
* exc_server().
*/
#include <mach/boolean.h>
#include <mach/message.h>
#include <mach/exception.h>
#include <mach/mig_errors.h>
#include "abort.h"
#include "exc_catcher.h"
__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)
{
#if defined(__DYNAMIC__)
static _libkernel_exc_raise_func_t exc_raise_func = (void*)-1;
if (exc_raise_func == ((void*)-1) && _dlsym) {
exc_raise_func = _dlsym(RTLD_DEFAULT, "catch_exception_raise");
}
if (exc_raise_func == 0) {
/* The user hasn't defined catch_exception_raise in their binary */
abort();
}
return (*exc_raise_func)(exception_port, thread, task, exception, code, codeCnt);
#else
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);
return catch_exception_raise(exception_port, thread, task, exception, code, codeCnt);
#endif
}