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Annotation of XNU/osfmk/kern/syscall_emulation.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * @OSF_COPYRIGHT@
        !            24:  */
        !            25: /* 
        !            26:  * Mach Operating System
        !            27:  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
        !            28:  * All Rights Reserved.
        !            29:  * 
        !            30:  * Permission to use, copy, modify and distribute this software and its
        !            31:  * documentation is hereby granted, provided that both the copyright
        !            32:  * notice and this permission notice appear in all copies of the
        !            33:  * software, derivative works or modified versions, and any portions
        !            34:  * thereof, and that both notices appear in supporting documentation.
        !            35:  * 
        !            36:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            37:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            38:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            39:  * 
        !            40:  * Carnegie Mellon requests users of this software to return to
        !            41:  * 
        !            42:  *  Software Distribution Coordinator  or  [email protected]
        !            43:  *  School of Computer Science
        !            44:  *  Carnegie Mellon University
        !            45:  *  Pittsburgh PA 15213-3890
        !            46:  * 
        !            47:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            48:  * the rights to redistribute these changes.
        !            49:  */
        !            50: /*
        !            51:  */
        !            52: 
        !            53: #ifndef        _KERN_SYSCALL_EMULATION_H_
        !            54: #define        _KERN_SYSCALL_EMULATION_H_
        !            55: 
        !            56: #ifndef        ASSEMBLER
        !            57: #include <kern/kern_types.h>
        !            58: #include <mach/machine/vm_types.h>
        !            59: #include <kern/lock.h>
        !            60: 
        !            61: typedef        vm_offset_t     eml_routine_t;
        !            62: 
        !            63: typedef struct eml_dispatch {
        !            64:        decl_mutex_data(,lock)          /* lock for reference count */
        !            65:        int             ref_count;      /* reference count */
        !            66:        int             disp_count;     /* count of entries in vector */
        !            67:        int             disp_min;       /* index of lowest entry in vector */
        !            68:        eml_routine_t   disp_vector[1]; /* first entry in array of dispatch */
        !            69:                                        /* routines (array has disp_count
        !            70:                                           elements) */
        !            71: } *eml_dispatch_t;
        !            72: 
        !            73: #define EML_ROUTINE_NULL       (eml_routine_t)0
        !            74: #define EML_DISPATCH_NULL      (eml_dispatch_t)0
        !            75: 
        !            76: #define        EML_SUCCESS             (0)
        !            77: 
        !            78: #define        EML_MOD                 (err_kern|err_sub(2))
        !            79: #define        EML_BAD_TASK            (EML_MOD|0x0001)
        !            80: #define        EML_BAD_CNT             (EML_MOD|0x0002)
        !            81: 
        !            82: /* Per-task initialization */
        !            83: extern void    eml_init(void);
        !            84: 
        !            85: /* Take reference on common task emulation vector */
        !            86: extern void    eml_task_reference(
        !            87:                        task_t  new_task,
        !            88:                        task_t  parent_task);
        !            89: 
        !            90: /* Deallocate reference on common task emulation vector */
        !            91: extern void    eml_task_deallocate(
        !            92:                        task_t  task);
        !            93: 
        !            94: #endif /* ASSEMBLER */
        !            95: 
        !            96: #endif /* _KERN_SYSCALL_EMULATION_H_ */

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