This is xnu-8019. See this file in:
/*
 * Copyright (c) 2000-2007 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@
 */
/*
 *	Copyright (C) 1992, NeXT, Inc.
 *
 *	File:	kern/mach_loader.h
 *
 *	Mach object file loader API.
 *
 * HISTORY
 *  24-Aug-92	Doug Mitchell at NeXT
 *	Created.
 */

#ifndef _BSD_KERN_MACH_LOADER_H_
#define _BSD_KERN_MACH_LOADER_H_

#include <mach/mach_types.h>
#include <mach-o/loader.h>

typedef int load_return_t;

/*
 * Structure describing the result from calling load_machfile(), if that
 * function returns LOAD_SUCCESS.
 */
typedef struct _load_result {
	user_addr_t             mach_header;
	user_addr_t             entry_point;

	// The user stack pointer and addressable user stack size.
	user_addr_t             user_stack;
	mach_vm_size_t          user_stack_size;

	// The allocation containing the stack and guard area.
	user_addr_t             user_stack_alloc;
	mach_vm_size_t          user_stack_alloc_size;

	mach_vm_address_t       all_image_info_addr;
	mach_vm_size_t          all_image_info_size;

	int                     thread_count;
	unsigned int
	    unixproc                : 1,
	    needs_dynlinker         : 1,
	    dynlinker               : 1,
	    validentry              : 1,
	    has_pagezero            : 1,
	    using_lcmain            : 1,
#if __arm64__
	    legacy_footprint        : 1,
#endif /* __arm64__ */
	is_64bit_addr           : 1,
	    is_64bit_data           : 1,
	    custom_stack            : 1,
	    is_cambria              : 1;
	unsigned int            csflags;
	unsigned char           uuid[16];
	mach_vm_address_t       min_vm_addr;
	mach_vm_address_t       max_vm_addr;
	unsigned int            platform_binary;
	off_t                   cs_end_offset;
	void                    *threadstate;
	size_t                  threadstate_sz;
	uint32_t                ip_platform;
	uint32_t                lr_min_sdk;
	uint32_t                lr_sdk;
	user_addr_t             dynlinker_mach_header;
	user_addr_t             dynlinker_max_vm_addr;
	int                     dynlinker_fd;
} load_result_t;

struct image_params;
load_return_t load_machfile(
	struct image_params     *imgp,
	struct mach_header      *header,
	thread_t                thread,
	vm_map_t                *mapp,
	load_result_t           *result);

load_return_t
validate_potential_simulator_binary(
	cpu_type_t               exectype,
	struct image_params      *imgp,
	off_t                    file_offset,
	off_t                    macho_size);

#define LOAD_SUCCESS            0
#define LOAD_BADARCH            1       /* CPU type/subtype not found */
#define LOAD_BADMACHO           2       /* malformed mach-o file */
#define LOAD_SHLIB              3       /* shlib version mismatch */
#define LOAD_FAILURE            4       /* Miscellaneous error */
#define LOAD_NOSPACE            5       /* No VM available */
#define LOAD_PROTECT            6       /* protection violation */
#define LOAD_RESOURCE           7       /* resource allocation failure */
#define LOAD_ENOENT             8       /* resource not found */
#define LOAD_IOERROR            9       /* IO error */
#define LOAD_DECRYPTFAIL        10      /* FP decrypt failure */
#define LOAD_BADMACHO_UPX       11      /* malformed mach-o file */
#define LOAD_BADARCH_X86        12      /* -no32exec boot-arg + attempted load of 32bit x86 binary */

#endif  /* _BSD_KERN_MACH_LOADER_H_ */