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      1 /*	$NetBSD: undefined.h,v 1.16 2021/12/05 04:42:55 msaitoh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995-1996 Mark Brinicombe.
      5  * Copyright (c) 1995 Brini.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software written for Brini by Mark Brinicombe
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by Brini.
     21  * 4. The name of the company nor the name of the author may be used to
     22  *    endorse or promote products derived from this software without specific
     23  *    prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     26  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     27  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     28  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     29  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  * RiscBSD kernel project
     38  *
     39  * undefined.h
     40  *
     41  * Undefined instruction types, symbols and prototypes
     42  *
     43  * Created      : 08/02/95
     44  */
     45 
     46 
     47 #ifndef _ARM_UNDEFINED_H_
     48 #define _ARM_UNDEFINED_H_
     49 #ifdef _KERNEL
     50 
     51 #include <sys/queue.h>
     52 
     53 typedef int (*undef_handler_t)(unsigned int, unsigned int, trapframe_t *, int);
     54 
     55 /*
     56  * Enumeration of coprocessor numbers.  Values may be duplicated
     57  * (the iWMMX coprocessor clashes with the FPA, for example), but
     58  * keep this table in numeric order.
     59  */
     60 enum arm_coprocs {
     61 	FPA_COPROC = 1,
     62 	FPA_COPROC2 = 2,
     63 	VFP_COPROC = 10,
     64 	VFP_COPROC2 = 11,
     65 	DEBUG_COPROC = 14,
     66 	SYSTEM_COPROC = 15,
     67 	/*
     68 	 * The following are not really co-processors, but are on the end
     69 	 * of the unknown instruction table for each coproc.
     70 	 */
     71 	CORE_UNKNOWN_HANDLER = 16,
     72 #ifdef THUMB_CODE
     73 	THUMB_UNKNOWN_HANDLER = 17,
     74 #endif
     75 	NUM_UNKNOWN_HANDLERS	/* Last entry */
     76 };
     77 
     78 /* Prototypes for undefined.c */
     79 
     80 void *install_coproc_handler(int, undef_handler_t);
     81 void replace_coproc_handler(int, undef_handler_t);
     82 void remove_coproc_handler(void *);
     83 void undefined_init(void);
     84 
     85 /*
     86  * Stuff below here is for use before kmem(9) is available.  Most code
     87  * shouldn't use it.
     88  */
     89 
     90 struct undefined_handler {
     91 	LIST_ENTRY(undefined_handler) uh_link;
     92 	undef_handler_t uh_handler;
     93 };
     94 
     95 /*
     96  * Handlers installed using install_coproc_handler_static shouldn't be
     97  * removed.  We special case the 'test vfp existence' handler.
     98  */
     99 void install_coproc_handler_static(int, struct undefined_handler *);
    100 
    101 /* Calls up to undefined.c from trap handlers */
    102 void undefinedinstruction(struct trapframe *);
    103 
    104 #endif
    105 
    106 /* End of undefined.h */
    107 
    108 #endif /* _ARM_UNDEFINED_H_ */
    109