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Annotation of OSKit-Mach/kern/syscall_emulation.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University.
        !             4:  * Copyright (c) 1993,1994 The University of Utah and
        !             5:  * the Computer Systems Laboratory (CSL).
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Permission to use, copy, modify and distribute this software and its
        !             9:  * documentation is hereby granted, provided that both the copyright
        !            10:  * notice and this permission notice appear in all copies of the
        !            11:  * software, derivative works or modified versions, and any portions
        !            12:  * thereof, and that both notices appear in supporting documentation.
        !            13:  *
        !            14:  * CARNEGIE MELLON, THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF
        !            15:  * THIS SOFTWARE IN ITS "AS IS" CONDITION, AND DISCLAIM ANY LIABILITY
        !            16:  * OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF
        !            17:  * THIS SOFTWARE.
        !            18:  *
        !            19:  * Carnegie Mellon requests users of this software to return to
        !            20:  *
        !            21:  *  Software Distribution Coordinator  or  [email protected]
        !            22:  *  School of Computer Science
        !            23:  *  Carnegie Mellon University
        !            24:  *  Pittsburgh PA 15213-3890
        !            25:  *
        !            26:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            27:  * the rights to redistribute these changes.
        !            28:  */
        !            29: 
        !            30: #ifndef        _KERN_SYSCALL_EMULATION_H_
        !            31: #define        _KERN_SYSCALL_EMULATION_H_
        !            32: 
        !            33: #ifndef        ASSEMBLER
        !            34: #include <mach/machine/vm_types.h>
        !            35: #include <kern/lock.h>
        !            36: 
        !            37: typedef        vm_offset_t     eml_routine_t;
        !            38: 
        !            39: typedef struct eml_dispatch {
        !            40:        decl_simple_lock_data(, lock)   /* lock for reference count */
        !            41:        int             ref_count;      /* reference count */
        !            42:        int             disp_count;     /* count of entries in vector */
        !            43:        int             disp_min;       /* index of lowest entry in vector */
        !            44:        eml_routine_t   disp_vector[1]; /* first entry in array of dispatch */
        !            45:                                        /* routines (array has disp_count */
        !            46:                                        /* elements) */
        !            47: } *eml_dispatch_t;
        !            48: 
        !            49: typedef vm_offset_t    *emulation_vector_t; /* Variable-length array */
        !            50: 
        !            51: #define EML_ROUTINE_NULL       (eml_routine_t)0
        !            52: #define EML_DISPATCH_NULL      (eml_dispatch_t)0
        !            53: 
        !            54: #define        EML_SUCCESS             (0)
        !            55: 
        !            56: #define        EML_MOD                 (err_kern|err_sub(2))
        !            57: #define        EML_BAD_TASK            (EML_MOD|0x0001)
        !            58: #define        EML_BAD_CNT             (EML_MOD|0x0002)
        !            59: #endif /* ASSEMBLER */
        !            60: 
        !            61: #endif /* _KERN_SYSCALL_EMULATION_H_ */

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