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      1 /*	$NetBSD: sun68k_trap.c,v 1.2 2026/07/19 01:03:00 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * the Systems Programming Group of the University of Utah Computer
      9  * Science Department.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	from: Utah Hdr: trap.c 1.37 92/12/20
     36  *	from: @(#)trap.c	8.5 (Berkeley) 1/4/94
     37  */
     38 
     39 /*
     40  * Copyright (c) 1994 Gordon W. Ross
     41  * Copyright (c) 1993 Adam Glass
     42  * Copyright (c) 1988 University of Utah.
     43  *
     44  * This code is derived from software contributed to Berkeley by
     45  * the Systems Programming Group of the University of Utah Computer
     46  * Science Department.
     47  *
     48  * Redistribution and use in source and binary forms, with or without
     49  * modification, are permitted provided that the following conditions
     50  * are met:
     51  * 1. Redistributions of source code must retain the above copyright
     52  *    notice, this list of conditions and the following disclaimer.
     53  * 2. Redistributions in binary form must reproduce the above copyright
     54  *    notice, this list of conditions and the following disclaimer in the
     55  *    documentation and/or other materials provided with the distribution.
     56  * 3. All advertising materials mentioning features or use of this software
     57  *    must display the following acknowledgement:
     58  *	This product includes software developed by the University of
     59  *	California, Berkeley and its contributors.
     60  * 4. Neither the name of the University nor the names of its contributors
     61  *    may be used to endorse or promote products derived from this software
     62  *    without specific prior written permission.
     63  *
     64  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     65  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     66  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     67  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     68  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     69  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     70  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     71  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     72  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     73  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     74  * SUCH DAMAGE.
     75  *
     76  *	from: Utah Hdr: trap.c 1.37 92/12/20
     77  *	from: @(#)trap.c	8.5 (Berkeley) 1/4/94
     78  */
     79 
     80 #include <sys/cdefs.h>
     81 __KERNEL_RCSID(0, "$NetBSD: sun68k_trap.c,v 1.2 2026/07/19 01:03:00 thorpej Exp $");
     82 
     83 #include <sys/param.h>
     84 #include <sys/systm.h>
     85 #include <sys/proc.h>
     86 #include <sys/acct.h>
     87 #include <sys/kernel.h>
     88 #include <sys/signalvar.h>
     89 #include <sys/resourcevar.h>
     90 #include <sys/syscall.h>
     91 #include <sys/syslog.h>
     92 
     93 #include <machine/cpu.h>
     94 #include <machine/pcb.h>
     95 #include <machine/psl.h>
     96 #include <machine/trap.h>
     97 
     98 #include <machine/promlib.h>
     99 
    100 /*
    101  * This is used if we hit a kernel breakpoint or trace trap
    102  * when there is no debugger installed (or not attached).
    103  * Drop into the PROM temporarily...
    104  */
    105 int
    106 _nodb_trap(int type, struct trapframe *tf)
    107 {
    108 
    109 	printf("\r\nKernel %s", trap_desc(type));
    110 	printf(", frame=%p\r\n", tf);
    111 	printf("No debugger; doing PROM abort.\r\n");
    112 	printf("To continue, type: c <RETURN>\r\n");
    113 	prom_abort();
    114 
    115 	/* OK then, just resume... */
    116 	tf->tf_sr &= ~PSL_T;
    117 	return(1);
    118 }
    119