68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/* $NetBSD: db_panic.c,v 1.8 2018/05/27 12:24:36 uwe Exp $ */
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/*-
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* Copyright (c) 2000, 2002, 2006, 2007, 2009, 2013 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: db_panic.c,v 1.8 2018/05/27 12:24:36 uwe Exp $");
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#include <sys/types.h>
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#include <sys/cpu.h>
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#include <ddb/ddbvar.h>
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#include <ddb/ddb.h>
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/*
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* db_panic: Called by panic(). May print a stack trace; may enter the
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* kernel debugger; may just return so that panic() will continue to
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* halt or reboot the system.
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*/
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void db_panic(void)
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{
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if (db_dumpstack > 0) {
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static int intrace = 0;
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if (intrace == 0) {
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intrace = 1;
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printf("cpu%u: Begin traceback...\n",
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cpu_index(curcpu()));
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db_stack_trace_print(
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(db_expr_t)(intptr_t)__builtin_frame_address(0),
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true, db_panicstackframes, "", printf);
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printf("cpu%u: End traceback...\n",
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cpu_index(curcpu()));
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intrace = 0;
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} else
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printf("Faulted in mid-traceback; aborting...\n");
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}
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if (db_onpanic > 0)
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Debugger();
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return;
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}
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