NetBSD/sys/ddb/db_lwp.c

80 lines
2.4 KiB
C

/* $NetBSD: db_lwp.c,v 1.7 2011/04/12 08:42:12 mrg Exp $ */
/*-
* Copyright (c) 2009 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: db_lwp.c,v 1.7 2011/04/12 08:42:12 mrg Exp $");
#ifndef _KERNEL
#include <stdbool.h>
#endif
#include <sys/param.h>
#include <sys/cpu.h>
#include <sys/proc.h>
#include <sys/cpu.h>
#include <machine/pcb.h>
#include <ddb/ddb.h>
lwp_t *
db_lwp_first(void)
{
return db_read_ptr("alllwp");
}
lwp_t *
db_lwp_next(lwp_t *l)
{
db_read_bytes((db_addr_t)&l->l_list.le_next, sizeof(l), (char *)&l);
return l;
}
void
db_lwp_whatis(uintptr_t addr, void (*pr)(const char *, ...))
{
uintptr_t stack;
lwp_t l, *lp;
for (lp = db_lwp_first(); lp != NULL; lp = db_lwp_next(lp)) {
db_read_bytes((db_addr_t)lp, sizeof(l), (char *)&l);
stack = (uintptr_t)KSTACK_LOWEST_ADDR((&l));
if (addr < stack || stack + KSTACK_SIZE <= addr) {
continue;
}
(*pr)("%p is %p+%zu, LWP %p's stack\n",
(void *)addr, (void *)stack,
(size_t)(addr - stack), lp);
}
}