1/*
2 * Copyright (c) 2004-2014 Apple 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#ifndef _SYS_SYSENT_H_
30#define _SYS_SYSENT_H_
31
32#include <sys/appleapiopts.h>
33#include <sys/cdefs.h>
34
35#ifdef KERNEL_PRIVATE
36#ifdef __APPLE_API_PRIVATE
37
38typedef int32_t sy_call_t(struct proc *, void *, int *);
39#if CONFIG_REQUIRES_U32_MUNGING
40typedef void sy_munge_t(void *);
41#elif __arm__ && (__BIGGEST_ALIGNMENT__ > 4)
42typedef int sy_munge_t(const void *, void *);
43#endif
44
45struct sysent { /* system call table */
46 sy_call_t *sy_call; /* implementing function */
47#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
48 sy_munge_t *sy_arg_munge32; /* system call arguments munger for 32-bit process */
49#endif
50 int32_t sy_return_type; /* system call return types */
51 int16_t sy_narg; /* number of args */
52 uint16_t sy_arg_bytes; /* Total size of arguments in bytes for
53 * 32-bit system calls
54 */
55};
56
57#ifndef __INIT_SYSENT_C__
58extern struct sysent sysent[];
59#endif /* __INIT_SYSENT_C__ */
60
61extern unsigned int nsysent;
62
63/*
64 * Valid values for sy_cancel
65 */
66#define _SYSCALL_CANCEL_NONE 0 /* Not a cancellation point */
67#define _SYSCALL_CANCEL_PRE 1 /* Canbe cancelled on entry itself */
68#define _SYSCALL_CANCEL_POST 2 /* Can only be cancelled after syscall is run */
69
70/*
71 * Valid values for sy_return_type
72 */
73#define _SYSCALL_RET_NONE 0
74#define _SYSCALL_RET_INT_T 1
75#define _SYSCALL_RET_UINT_T 2
76#define _SYSCALL_RET_OFF_T 3
77#define _SYSCALL_RET_ADDR_T 4
78#define _SYSCALL_RET_SIZE_T 5
79#define _SYSCALL_RET_SSIZE_T 6
80#define _SYSCALL_RET_UINT64_T 7
81
82#endif /* __APPLE_API_PRIVATE */
83#endif /* KERNEL_PRIVATE */
84
85#endif /* !_SYS_SYSENT_H_ */
86