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Annotation of kernel/machdep/i386/catch.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) 1992 NeXT Computer, Inc.
        !            27:  *
        !            28:  * Interrupt/Trap Catch routines.
        !            29:  *
        !            30:  * HISTORY
        !            31:  *
        !            32:  * 29 August 1992 ? at NeXT
        !            33:  *     Created.
        !            34:  */
        !            35: 
        !            36: #import <mach/mach_types.h>
        !            37: 
        !            38: #import <pc_support.h>
        !            39: 
        !            40: #if    PC_SUPPORT
        !            41: #import <machdep/i386/pc_support/PCmiscInline.h>
        !            42: #endif
        !            43: 
        !            44: void
        !            45: catch_interrupt(
        !            46:     thread_saved_state_t       *state  /* by reference */
        !            47: )
        !            48: {
        !            49:     intr_handler(state);
        !            50:     
        !            51:     if ((state->frame.eflags & EFL_VM) || state->frame.cs.rpl == USER_PRIV) {
        !            52: #if    PC_SUPPORT
        !            53:        threadPCInterrupt(current_thread(), state);
        !            54: #endif
        !            55:        check_for_ast(state);
        !            56:     }
        !            57: }
        !            58: 
        !            59: void
        !            60: catch_trap(
        !            61:     thread_saved_state_t       *state  /* by reference */
        !            62: )
        !            63: {
        !            64:     if ((state->frame.eflags & EFL_VM) || state->frame.cs.rpl == USER_PRIV) {
        !            65: #if    PC_SUPPORT
        !            66:        if (!threadPCException(current_thread(), state))
        !            67: #endif
        !            68:            user_trap(state);
        !            69:        /* NOTREACHED */
        !            70:     }
        !            71:     else
        !            72:        kernel_trap(state);
        !            73: }

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