79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/* $NetBSD: db_lwp.c,v 1.6 2011/01/14 02:06:33 rmind Exp $ */
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/*-
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* Copyright (c) 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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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_lwp.c,v 1.6 2011/01/14 02:06:33 rmind Exp $");
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#ifndef _KERNEL
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#include <stdbool.h>
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#endif
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#include <sys/param.h>
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#include <sys/cpu.h>
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#include <sys/proc.h>
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#include <machine/pcb.h>
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#include <ddb/ddb.h>
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lwp_t *
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db_lwp_first(void)
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{
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return db_read_ptr("alllwp");
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}
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lwp_t *
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db_lwp_next(lwp_t *l)
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{
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db_read_bytes((db_addr_t)&l->l_list.le_next, sizeof(l), (char *)&l);
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return l;
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}
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void
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db_lwp_whatis(uintptr_t addr, void (*pr)(const char *, ...))
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{
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uintptr_t stack;
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lwp_t l, *lp;
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for (lp = db_lwp_first(); lp != NULL; lp = db_lwp_next(lp)) {
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db_read_bytes((db_addr_t)lp, sizeof(l), (char *)&l);
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stack = (uintptr_t)KSTACK_LOWEST_ADDR((&l));
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if (addr < stack || stack + KSTACK_SIZE <= addr) {
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continue;
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}
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(*pr)("%p is %p+%zu, LWP %p's stack\n",
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(void *)addr, (void *)stack,
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(size_t)(addr - stack), lp);
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}
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}
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