1/*
2 * Copyright (c) 2000-2004 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 * @OSF_COPYRIGHT@
30 */
31/*
32 * Mach Operating System
33 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
34 * All Rights Reserved.
35 *
36 * Permission to use, copy, modify and distribute this software and its
37 * documentation is hereby granted, provided that both the copyright
38 * notice and this permission notice appear in all copies of the
39 * software, derivative works or modified versions, and any portions
40 * thereof, and that both notices appear in supporting documentation.
41 *
42 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
43 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
44 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
45 *
46 * Carnegie Mellon requests users of this software to return to
47 *
48 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
49 * School of Computer Science
50 * Carnegie Mellon University
51 * Pittsburgh PA 15213-3890
52 *
53 * any improvements or extensions that they make and grant Carnegie Mellon
54 * the rights to redistribute these changes.
55 */
56/*
57 */
58
59#ifndef _KERN_SYSCALL_SW_H_
60#define _KERN_SYSCALL_SW_H_
61
62#include <mach_assert.h>
63#include <mach/kern_return.h>
64
65/*
66 * mach_trap_stack indicates the trap may discard
67 * its kernel stack. Some architectures may need
68 * to save more state in the pcb for these traps.
69 */
70
71/* Keep this in sync with DTrace's version in bsd/dev/dtrace/systrace.c */
72#if CONFIG_REQUIRES_U32_MUNGING
73typedef void mach_munge_t(void *);
74#elif __arm__ && (__BIGGEST_ALIGNMENT__ > 4)
75typedef int mach_munge_t(const void *, void *);
76#endif
77
78typedef struct {
79 unsigned char mach_trap_arg_count; /* Number of trap arguments (Arch independant) */
80 unsigned char mach_trap_u32_words; /* number of 32-bit words to copyin for U32 */
81 unsigned char mach_trap_returns_port;
82 unsigned char __mach_trap_padding;
83 kern_return_t (*mach_trap_function)(void *);
84#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
85 mach_munge_t *mach_trap_arg_munge32; /* system call argument munger routine for 32-bit */
86#endif
87#if MACH_ASSERT
88 const char *mach_trap_name;
89#endif /* MACH_ASSERT */
90} mach_trap_t;
91
92#define MACH_TRAP_TABLE_COUNT 128
93
94extern const mach_trap_t mach_trap_table[MACH_TRAP_TABLE_COUNT];
95extern const int mach_trap_count;
96extern const char * const mach_syscall_name_table[MACH_TRAP_TABLE_COUNT];
97
98#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
99#define MACH_TRAP_MUNGE(arg) .mach_trap_arg_munge32 = arg,
100#else
101#define MACH_TRAP_MUNGE(arg)
102#endif
103
104#if MACH_ASSERT
105#define MACH_TRAP_NAME(arg) .mach_trap_name = #arg,
106#else
107#define MACH_TRAP_NAME(arg)
108#endif
109
110#define MACH_TRAP(name, arg_count, u32_arg_words, munge32, ...) { \
111 .mach_trap_arg_count = arg_count, \
112 .mach_trap_u32_words = u32_arg_words, \
113 .mach_trap_function = (kern_return_t (*)(void *)) (name), \
114 MACH_TRAP_MUNGE(munge32) \
115 MACH_TRAP_NAME(name) \
116 __VA_ARGS__ \
117}
118
119#endif /* _KERN_SYSCALL_SW_H_ */
120