/*
* Copyright (c) 2025 Apple Computer, 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@
*/
#include <mach/vm_param.h>
#include <stdint.h>
#define _STR(X) #X
#define STR(X) _STR(X)
void start() asm ("start");
/*
* A library-free routine to return the number of bytes in a pointer. This
* allows us to test the kernel loader policy without having an external
* dependency on dyld and/or the presence of a slice in a library dependency
* (which it often does not, even if the kernel supports the policy).
*
* No C code. The stack is not guaranteed to be aligned yet.
*/
__attribute__((naked, noreturn))
void
start()
{
/* exit(__WORDSIZE/8) */
asm volatile (
"mov x0, " STR(__WORDSIZE/8) "\n"
"mov x16, #1\n"
"svc #(" STR(SWI_SYSCALL) ")\n");
}