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Annotation of kernel/driverkit/ppc/IOSupport.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25:  /*
        !            26:  * Copyright (c) 1997 Apple Computer, Inc.
        !            27:  *
        !            28:  *
        !            29:  */
        !            30: 
        !            31: #include <diagnostic.h>
        !            32: #import <mach/mach_types.h>
        !            33: #include <machine/setjmp.h>
        !            34: #import <machine/label_t.h>
        !            35: 
        !            36: /* Call the TVector with thread exception recovery */
        !            37: 
        !            38: extern int
        !            39: CallTVector_NoRecover(
        !            40:     void * p1, void * p2, void * p3, void * p4, void * p5, void * p6,
        !            41:     void * entry );
        !            42: 
        !            43: int
        !            44: CallTVector(
        !            45:     void * p1, void * p2, void * p3, void * p4, void * p5, void * p6,
        !            46:     void * entry )
        !            47: {
        !            48:     label_t    jmpbuf;
        !            49:     int                err;
        !            50:        vm_offset_t tmpbuf = current_thread()->recover;
        !            51: 
        !            52: #if DIAGNOSTIC
        !            53:        if(tmpbuf)
        !            54:                kprintf("CallTVector() ****** NESTED SETJUMP ******\n");
        !            55: #endif /* DIAGNOSTIC */
        !            56: 
        !            57:     if (setjmp(&jmpbuf)) {
        !            58:         err = -999;
        !            59:     } else {
        !            60: 
        !            61:         current_thread()->recover = (vm_offset_t)&jmpbuf;
        !            62:         err = CallTVector_NoRecover( p1, p2, p3, p4, p5, p6, entry);
        !            63:     }
        !            64:     current_thread()->recover = (vm_offset_t)tmpbuf;
        !            65:     return( err);
        !            66: }
        !            67: 

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