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3dc736d939
Handle attributes for function pointers the same way we handle attributes for functions, by explicitly checking for the compiler version with #if rather than with a configure script check. That's one fewer thing that, if you're not using autoconf, has to be done in some other fashion. While we're at it, put NORETURN in the right place to have it work with Microsoft Visual Studio as well as various UN*X compilers.
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/*
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* Copyright (c) 1996, 1997
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* The Regents of the University of California. 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: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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/*
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* XXX - all we need, on platforms other than DEC OSF/1 (a/k/a Digital UNIX,
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* a/k/a Tru64 UNIX), is "size_t", which is a standard C type; what do we
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* need to do to get it defined? This is clearly wrong, as we shouldn't
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* have to include UNIX or Windows system header files to get it.
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*/
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#include <netdissect-stdinc.h>
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#ifdef __osf__
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#include <sys/sysinfo.h>
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#include <sys/proc.h>
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#if !defined(HAVE_SNPRINTF)
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int snprintf(char *, size_t, const char *, ...) PRINTFLIKE(3, 4);
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#endif /* !defined(HAVE_SNPRINTF) */
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#endif /* __osf__ */
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#include "machdep.h"
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/*
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* On platforms where the CPU doesn't support unaligned loads, force
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* unaligned accesses to abort with SIGBUS, rather than being fixed
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* up (slowly) by the OS kernel; on those platforms, misaligned accesses
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* are bugs, and we want tcpdump to crash so that the bugs are reported.
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*
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* The only OS on which this is necessary is DEC OSF/1^W^WDigital
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* UNIX^W^WTru64 UNIX.
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*/
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int
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abort_on_misalignment(char *ebuf _U_, size_t ebufsiz _U_)
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{
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#ifdef __osf__
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static int buf[2] = { SSIN_UACPROC, UAC_SIGBUS };
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if (setsysinfo(SSI_NVPAIRS, (caddr_t)buf, 1, 0, 0) < 0) {
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(void)snprintf(ebuf, ebufsiz, "setsysinfo: errno %d", errno);
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return (-1);
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}
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#endif
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return (0);
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}
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