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  
 64  /*
 65   *	mach_trap_stack indicates the trap may discard
 66   *	its kernel stack.  Some architectures may need
 67   *	to save more state in the pcb for these traps.
 68   */
 69  #if CONFIG_REQUIRES_U32_MUNGING
 70  typedef	void	mach_munge_t(void *);
 71  #elif __arm__ && (__BIGGEST_ALIGNMENT__ > 4)
 72  typedef	int	mach_munge_t(const void *, void *);
 73  #endif
 74  
 75  typedef struct {
 76  	int			mach_trap_arg_count; /* Number of trap arguments (Arch independant) */
 77  	kern_return_t		(*mach_trap_function)(void *);
 78  #if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
 79  	mach_munge_t		*mach_trap_arg_munge32; /* system call argument munger routine for 32-bit */
 80  #endif
 81  	int			mach_trap_u32_words; /* number of 32-bit words to copyin for U32 */
 82  #if	MACH_ASSERT
 83  	const char*		mach_trap_name;
 84  #endif /* MACH_ASSERT */
 85  } mach_trap_t;
 86  
 87  #define MACH_TRAP_TABLE_COUNT   128
 88  
 89  
 90  extern const mach_trap_t	mach_trap_table[];
 91  extern const int			mach_trap_count;
 92  
 93  #if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
 94  
 95  #if	!MACH_ASSERT
 96  #define	MACH_TRAP(name, arg_count, u32_arg_words, munge32)	\
 97  	{ (arg_count), (kern_return_t (*)(void *)) (name), munge32, (u32_arg_words)  }
 98  #else /* !MACH_ASSERT */
 99  #define	MACH_TRAP(name, arg_count, u32_arg_words, munge32)	\
100  	{ (arg_count), (kern_return_t (*)(void *)) (name), munge32, (u32_arg_words), #name  }
101  #endif /* !MACH_ASSERT */
102  
103  
104  #else /* !CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4)) */
105  
106  #if	!MACH_ASSERT
107  #define	MACH_TRAP(name, arg_count, u32_arg_words, munge32)	\
108  	{ (arg_count), (kern_return_t (*)(void *)) (name), (u32_arg_words)  }
109  #else /* !MACH_ASSERT */
110  #define	MACH_TRAP(name, arg_count, u32_arg_words, munge32)	\
111  	{ (arg_count), (kern_return_t (*)(void *)) (name), (u32_arg_words), #name  }
112  #endif /* !MACH_ASSERT */
113  
114  #endif /* !CONFIG_REQUIRES_U32_MUNGING */
115  
116  #endif	/* _KERN_SYSCALL_SW_H_ */