1 /*
2 * Copyright (c) 2016-2017 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 /*
30 * This is the reference code for platform-specific implementations
31 * of combined copy and 16-bit one's complement sum.
32 */
33
34 #if !defined(__arm__) && !defined(__arm64__) && !defined(__x86_64__)
35 #include <sys/param.h>
36 #include <sys/cdefs.h>
37 #include <sys/types.h>
38 #include <sys/conf.h>
39 #ifndef KERNEL
40 #include <strings.h>
41 #ifndef LIBSYSCALL_INTERFACE
42 #error "LIBSYSCALL_INTERFACE not defined"
43 #endif /* !LIBSYSCALL_INTERFACE */
44 #endif /* !KERNEL */
45
46 extern uint32_t os_cpu_copy_in_cksum(void *__sized_by(len), void *__sized_by(len),
47 uint32_t len, uint32_t);
48 extern uint32_t os_cpu_in_cksum(const void *, uint32_t, uint32_t);
49
50 uint32_t
os_cpu_copy_in_cksum(void * __sized_by (len)src,void * __sized_by (len)dst,uint32_t len,uint32_t sum0)51 os_cpu_copy_in_cksum(void *__sized_by(len) src, void *__sized_by(len) dst,
52 uint32_t len, uint32_t sum0)
53 {
54 bcopy(src, dst, len);
55 return os_cpu_in_cksum(dst, len, sum0);
56 }
57 #endif /* !__arm__ && !__arm64__ && !__x86_64__ */
58