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Annotation of OSKit-Mach/kern/syscall_emulation.h, revision 1.1.1.1

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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