/* * 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@ */ /* * Mach Operating System * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ #include <mach/mach.h> #include <mach/boolean.h> #include <mach/machine/ndr_def.h> #include <mach/mach_traps.h> #include <mach/mach_host.h> #include <mach/mach_init.h> #include <mach/vm_param.h> #include <stdbool.h> #include "externs.h" #include "mig_reply_port.h" mach_port_t mach_task_self_ = MACH_PORT_NULL; #ifdef __i386__ mach_port_t mach_host_self_ = MACH_PORT_NULL; #endif vm_size_t vm_page_size = PAGE_SIZE; vm_size_t vm_page_mask = PAGE_MASK; int vm_page_shift = PAGE_SHIFT; int mach_init(void); int _mach_fork_child(void); static int mach_init_doit(bool forkchild); extern void _pthread_set_self(void *); extern void cthread_set_self(void *); kern_return_t host_page_size(__unused host_t host, vm_size_t *out_page_size) { *out_page_size = PAGE_SIZE; return KERN_SUCCESS; } /* * mach_init() must be called explicitly in static executables (including dyld). * called by libSystem_initializer() in dynamic executables */ int mach_init(void) { static bool mach_init_inited = false; if (mach_init_inited) { return 0; } mach_init_inited = true; return mach_init_doit(false); } // called by libSystem_atfork_child() int _mach_fork_child(void) { return mach_init_doit(true); } int mach_init_doit(bool forkchild) { /* * Get the important ports into the cached values, * as required by "mach_init.h". */ mach_task_self_ = task_self_trap(); /* * Initialize the single mig reply port */ _pthread_set_self(0); _mig_init(0); #if WE_REALLY_NEED_THIS_GDB_HACK /* * Check to see if GDB wants us to stop */ { task_user_data_data_t user_data; mach_msg_type_number_t user_data_count = TASK_USER_DATA_COUNT; user_data.user_data = 0; (void)task_info(mach_task_self_, TASK_USER_DATA, (task_info_t)&user_data, &user_data_count); #define MACH_GDB_RUN_MAGIC_NUMBER 1 #ifdef MACH_GDB_RUN_MAGIC_NUMBER /* This magic number is set in mach-aware gdb * for RUN command to allow us to suspend user's * executable (linked with this libmach!) * with the code below. * This hack should disappear when gdb improves. */ if ((int)user_data.user_data == MACH_GDB_RUN_MAGIC_NUMBER) { kern_return_t ret; user_data.user_data = 0; ret = task_suspend(mach_task_self_); if (ret != KERN_SUCCESS) { while (1) { (void)task_terminate(mach_task_self_); } } } #undef MACH_GDB_RUN_MAGIC_NUMBER #endif /* MACH_GDB_RUN_MAGIC_NUMBER */ } #endif /* WE_REALLY_NEED_THIS_GDB_HACK */ return 0; }