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aarch64.c revision 1.1 
      1 /*	$NetBSD: aarch64.c,v 1.1 2022/06/02 05:09:01 ryo Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2022 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Ryo Shimizu.
      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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __RCSID("$NetBSD: aarch64.c,v 1.1 2022/06/02 05:09:01 ryo Exp $");
     35 #endif /* not lint */
     36 
     37 #include <kvm.h>
     38 #include <nlist.h>
     39 #include <err.h>
     40 #include <stdlib.h>
     41 
     42 #include "extern.h"
     43 
     44 vaddr_t el0_trap;
     45 vaddr_t el1_trap;
     46 
     47 static struct nlist nl[] = {
     48 	{ .n_name = "el0_trap" },	/* 0 */
     49 	{ .n_name = "el1_trap" },	/* 1 */
     50 	{ .n_name = NULL },
     51 };
     52 
     53 void
     54 db_mach_init(kvm_t *kd)
     55 {
     56 	if (kvm_nlist(kd, nl) == -1)
     57 		errx(EXIT_FAILURE, "kvm_nlist: %s", kvm_geterr(kd));
     58 
     59 	el0_trap = nl[0].n_value;
     60 	el1_trap = nl[1].n_value;
     61 }
     62