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Annotation of XNU/pexpert/i386/pe_interrupt.c, revision 1.1.1.1

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: #include <mach/i386/thread_status.h>
                     23: #include <pexpert/protos.h>
                     24: #include <pexpert/pexpert.h>
                     25: 
                     26: struct i386_interrupt_handler {
                     27:        IOInterruptHandler      handler;
                     28:        void                    *nub;
                     29:        void                    *target;
                     30:        void                    *refCon;
                     31: };
                     32: 
                     33: typedef struct i386_interrupt_handler i386_interrupt_handler_t;
                     34: 
                     35: i386_interrupt_handler_t       PE_interrupt_handler;
                     36: 
                     37: void PE_platform_interrupt_initialize(void)
                     38: {
                     39: }
                     40: 
                     41: void
                     42: PE_incoming_interrupt(int interrupt, struct i386_saved_state *ssp)
                     43: {
                     44:        boolean_t               save_int;
                     45: 
                     46:        i386_interrupt_handler_t        *vector;
                     47: 
                     48:        vector = &PE_interrupt_handler;
                     49: 
                     50:        save_int  = ml_set_interrupts_enabled(FALSE);
                     51:        vector->handler(vector->target, vector->refCon, vector->nub, interrupt);
                     52:        ml_set_interrupts_enabled(save_int);
                     53: }
                     54: 
                     55: void PE_install_interrupt_handler(void *nub, int source,
                     56:                                  void *target,
                     57:                                  IOInterruptHandler handler,
                     58:                                  void *refCon)
                     59: {
                     60:        i386_interrupt_handler_t        *vector;
                     61: 
                     62:        vector = &PE_interrupt_handler;
                     63: 
                     64:        /*vector->source = source; IGNORED */
                     65:        vector->handler = handler;
                     66:        vector->nub = nub;
                     67:        vector->target = target;
                     68:        vector->refCon = refCon;
                     69: }

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