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Annotation of kernel/machdep/i386/catch.c, revision 1.1.1.1

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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