/*
 * Copyright (c) 2003, 2004 Ulrich Drepper <drepper@redhat.com>
 * Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org>
 * All rights reserved.
 *
 * 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "defs.h"

#include <signal.h>

#include "xlat/sigev_value.h"

#if SUPPORTED_PERSONALITIES > 1
static void
printsigevent32(struct tcb *tcp, long arg)
{
	struct {
		int     sigev_value;
		int     sigev_signo;
		int     sigev_notify;

		union {
			int     tid;
			struct {
				int     function, attribute;
			} thread;
		} un;
	} sev;

	if (!umove_or_printaddr(tcp, arg, &sev)) {
		tprintf("{%#x, ", sev.sigev_value);
		if (sev.sigev_notify == SIGEV_SIGNAL)
			tprintf("%s, ", signame(sev.sigev_signo));
		else
			tprintf("%u, ", sev.sigev_signo);
		printxval(sigev_value, sev.sigev_notify, "SIGEV_???");
		tprints(", ");
		if (sev.sigev_notify == SIGEV_THREAD_ID)
			tprintf("{%d}", sev.un.tid);
		else if (sev.sigev_notify == SIGEV_THREAD)
			tprintf("{%#x, %#x}",
				sev.un.thread.function,
				sev.un.thread.attribute);
		else
			tprints("{...}");
		tprints("}");
	}
}
#endif

void
printsigevent(struct tcb *tcp, long arg)
{
	struct sigevent sev;

#if SUPPORTED_PERSONALITIES > 1
	if (current_wordsize == 4) {
		printsigevent32(tcp, arg);
		return;
	}
#endif
	if (!umove_or_printaddr(tcp, arg, &sev)) {
		tprintf("{%p, ", sev.sigev_value.sival_ptr);
		if (sev.sigev_notify == SIGEV_SIGNAL)
			tprintf("%s, ", signame(sev.sigev_signo));
		else
			tprintf("%u, ", sev.sigev_signo);
		printxval(sigev_value, sev.sigev_notify, "SIGEV_???");
		tprints(", ");
		if (sev.sigev_notify == SIGEV_THREAD_ID)
#if defined(HAVE_STRUCT_SIGEVENT__SIGEV_UN__PAD)
			/* _pad[0] is the _tid field which might not be
			   present in the userlevel definition of the
			   struct.  */
			tprintf("{%d}", sev._sigev_un._pad[0]);
#elif defined(HAVE_STRUCT_SIGEVENT___PAD)
			tprintf("{%d}", sev.__pad[0]);
#else
# warning unfamiliar struct sigevent => incomplete SIGEV_THREAD_ID decoding
			tprints("{...}");
#endif
		else if (sev.sigev_notify == SIGEV_THREAD)
			tprintf("{%p, %p}", sev.sigev_notify_function,
				sev.sigev_notify_attributes);
		else
			tprints("{...}");
		tprints("}");
	}
}