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Cider Isn't Darwin Emulation, Really
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254/* * Copyright (c) 2000-2003, 2008 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 */
/* * Machine specific support for thread initialization */
#if defined(__ppc__) || defined(__ppc64__)#include <architecture/ppc/cframe.h>#elif defined(__arm__) #include <architecture/arm/cframe.h>#endif
#include "pthread_internals.h"
/* * Set up the initial state of a MACH thread */void_pthread_setup(pthread_t thread, void (*routine)(pthread_t), void *vsp, int suspended, int needresume){ kern_return_t r; unsigned int count;#if defined(__ppc__) || defined(__ppc64__)#if defined(__ppc__) ppc_thread_state_t state = {0}; ppc_thread_state_t *ts = &state; thread_state_flavor_t flavor = PPC_THREAD_STATE; count = PPC_THREAD_STATE_COUNT;#elif defined(__ppc64__) ppc_thread_state64_t state = {0}; ppc_thread_state64_t *ts = &state; thread_state_flavor_t flavor = PPC_THREAD_STATE64; count = PPC_THREAD_STATE64_COUNT;#endif /* * Set up PowerPC registers. */ if (suspended) { PTHREAD_MACH_CALL(thread_get_state(thread->kernel_thread, flavor, (thread_state_t) &state, &count), r); } ts->srr0 = (uintptr_t)routine; ts->r1 = (uintptr_t)vsp - C_ARGSAVE_LEN - C_RED_ZONE; ts->r3 = (uintptr_t)thread; /* Incase of needresume, suspend is always set */ if (suspended) { PTHREAD_MACH_CALL(thread_set_state(thread->kernel_thread, flavor, (thread_state_t) &state, count), r); if (needresume) PTHREAD_MACH_CALL(thread_resume(thread->kernel_thread), r); } else { PTHREAD_MACH_CALL(thread_create_running(mach_task_self(), flavor, (thread_state_t) ts, count, &thread->kernel_thread), r); }#elif defined(__i386__) i386_thread_state_t state = {0}; i386_thread_state_t *ts = &state; int *sp = vsp;
/* * Set up i386 registers & function call. */ count = i386_THREAD_STATE_COUNT; if (suspended) { PTHREAD_MACH_CALL(thread_get_state(thread->kernel_thread, i386_THREAD_STATE, (thread_state_t) &state, &count), r); } ts->eip = (int) 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 = (int) thread; /* argument to function */ *--sp = 0; /* fake return address */ ts->esp = (int) sp; /* set stack pointer */ /* Incase of needresume, suspend is always set */ if (suspended) { PTHREAD_MACH_CALL(thread_set_state(thread->kernel_thread, i386_THREAD_STATE, (thread_state_t) &state, i386_THREAD_STATE_COUNT), r); if (needresume) PTHREAD_MACH_CALL(thread_resume(thread->kernel_thread), r); } else { PTHREAD_MACH_CALL(thread_create_running(mach_task_self(), i386_THREAD_STATE, (thread_state_t) ts, i386_THREAD_STATE_COUNT, &thread->kernel_thread), r); }
#elif defined(__x86_64__) x86_thread_state64_t state = {0}; x86_thread_state64_t *ts = &state; uintptr_t *sp = vsp;
/* * Set up x86-64 registers & function call. */ count = x86_THREAD_STATE64_COUNT; if (suspended) { PTHREAD_MACH_CALL(thread_get_state(thread->kernel_thread, x86_THREAD_STATE64, (thread_state_t) &state, &count), r); } ts->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. */
ts->rdi = (uintptr_t) thread; /* argument to function */ *--sp = 0; /* fake return address */ ts->rsp = (uintptr_t) sp; /* set stack pointer */ /* Incase of needresume, suspend is always set */ if (suspended) { PTHREAD_MACH_CALL(thread_set_state(thread->kernel_thread, x86_THREAD_STATE64, (thread_state_t) &state, x86_THREAD_STATE64_COUNT), r); if (needresume) PTHREAD_MACH_CALL(thread_resume(thread->kernel_thread), r); } else { PTHREAD_MACH_CALL(thread_create_running(mach_task_self(), x86_THREAD_STATE64, (thread_state_t) ts, x86_THREAD_STATE64_COUNT, &thread->kernel_thread), r); }
#elif defined(__arm__) arm_thread_state_t state = {0}; arm_thread_state_t *ts = &state; thread_state_flavor_t flavor = ARM_THREAD_STATE; count = ARM_THREAD_STATE_COUNT;
if (suspended) { PTHREAD_MACH_CALL(thread_get_state(thread->kernel_thread, flavor, (thread_state_t) &state, &count), r); }
ts->pc = (uintptr_t)routine;
if (ts->pc & 1) { ts->pc &= ~1; ts->cpsr |= 0x20; /* PSR_THUMB */ } ts->sp = (uintptr_t)vsp - C_ARGSAVE_LEN - C_RED_ZONE; ts->r[0] = (uintptr_t)thread;
/* Incase of needresume, suspend is always set */ if (suspended) { PTHREAD_MACH_CALL(thread_set_state(thread->kernel_thread, flavor, (thread_state_t) &state, count), r); if (needresume) PTHREAD_MACH_CALL(thread_resume(thread->kernel_thread), r); } else { PTHREAD_MACH_CALL(thread_create_running(mach_task_self(), flavor, (thread_state_t) ts, count, &thread->kernel_thread), r); }#else#error _pthread_setup not defined for this architecture#endif}