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/*
* Copyright (c) 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stddef.h>
#ifdef __osf__
#include <stdio.h>
#include <sys/sysinfo.h>
#include <sys/proc.h>
#endif /* __osf__ */
#include "varattrs.h"
#include "machdep.h"
/*
* On platforms where the CPU doesn't support unaligned loads, force
* unaligned accesses to abort with SIGBUS, rather than being fixed
* up (slowly) by the OS kernel; on those platforms, misaligned accesses
* are bugs, and we want tcpdump to crash so that the bugs are reported.
*
* The only OS on which this is necessary is DEC OSF/1^W^WDigital
* UNIX^W^WTru64 UNIX.
*/
int
abort_on_misalignment(char *ebuf _U_, size_t ebufsiz _U_)
{
#ifdef __osf__
static int buf[2] = { SSIN_UACPROC, UAC_SIGBUS };
if (setsysinfo(SSI_NVPAIRS, (caddr_t)buf, 1, 0, 0) < 0) {
(void)snprintf(ebuf, ebufsiz, "setsysinfo: errno %d", errno);
return (-1);
}
#endif
return (0);
}
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