/* * Copyright (c) 2000-2003, 2008, 2012 Apple Inc. All rights reserved. * * @APPLE_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. 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_LICENSE_HEADER_END@ */ /* * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991 * All Rights Reserved * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby granted, * provided that the above copyright notice appears in all copies and * that both the copyright notice and this permission notice appear in * supporting documentation. * * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE. * * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * */ /* * MkLinux */ #include "internal.h" #if !defined(__OPEN_SOURCE__) && TARGET_OS_OSX // 40703288 /* * Machine specific support for thread initialization */ // NOTE: no resolvers, so this file must not contain any atomic operations PTHREAD_NOEXPORT void _pthread_setup_suspended(pthread_t th, void (*f)(pthread_t), void *sp); /* * Set up the initial state of a MACH thread */ void _pthread_setup_suspended(pthread_t thread, void (*routine)(pthread_t), void *vsp) { #if defined(__i386__) i386_thread_state_t state = { }; thread_state_flavor_t flavor = x86_THREAD_STATE32; mach_msg_type_number_t count = i386_THREAD_STATE_COUNT; #elif defined(__x86_64__) x86_thread_state64_t state = { }; thread_state_flavor_t flavor = x86_THREAD_STATE64; mach_msg_type_number_t count = x86_THREAD_STATE64_COUNT; #else #error _pthread_setup not defined for this architecture #endif (void)thread_get_state(_pthread_kernel_thread(thread), flavor, (thread_state_t)&state, &count); #if defined(__i386__) uintptr_t *sp = vsp; state.__eip = (uintptr_t)routine; // We need to simulate a 16-byte aligned stack frame as if we had // executed a call instruction. Since we're "pushing" one argument, // we need to adjust the pointer by 12 bytes (3 * sizeof (int *)) sp -= 3; // make sure stack is aligned *--sp = (uintptr_t)thread; // argument to function *--sp = 0; // fake return address state.__esp = (uintptr_t)sp; // set stack pointer #elif defined(__x86_64__) uintptr_t *sp = vsp; state.__rip = (uintptr_t)routine; // We need to simulate a 16-byte aligned stack frame as if we had // executed a call instruction. The stack should already be aligned // before it comes to us and we don't need to push any arguments, // so we shouldn't need to change it. state.__rdi = (uintptr_t)thread; // argument to function *--sp = 0; // fake return address state.__rsp = (uintptr_t)sp; // set stack pointer #else #error _pthread_setup_suspended not defined for this architecture #endif (void)thread_set_state(_pthread_kernel_thread(thread), flavor, (thread_state_t)&state, count); } #endif // !defined(__OPEN_SOURCE__) && TARGET_OS_OSX