__sigtramp2.S revision 1.1 
11.1Smatt/*	$NetBSD: __sigtramp2.S,v 1.1 2014/09/19 17:36:25 matt Exp $	*/
21.1Smatt
31.1Smatt/*-
41.1Smatt * Copyright (c) 2002 The NetBSD Foundation, Inc.
51.1Smatt * All rights reserved.
61.1Smatt *
71.1Smatt * This code is derived from software contributed to The NetBSD Foundation
81.1Smatt * by Jason R. Thorpe.
91.1Smatt *
101.1Smatt * Redistribution and use in source and binary forms, with or without
111.1Smatt * modification, are permitted provided that the following conditions
121.1Smatt * are met:
131.1Smatt * 1. Redistributions of source code must retain the above copyright
141.1Smatt *    notice, this list of conditions and the following disclaimer.
151.1Smatt * 2. Redistributions in binary form must reproduce the above copyright
161.1Smatt *    notice, this list of conditions and the following disclaimer in the
171.1Smatt *    documentation and/or other materials provided with the distribution.
181.1Smatt *
191.1Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
201.1Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
211.1Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
221.1Smatt * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
231.1Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
241.1Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
251.1Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
261.1Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
271.1Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
281.1Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
291.1Smatt * POSSIBILITY OF SUCH DAMAGE.
301.1Smatt */
311.1Smatt
321.1Smatt#include "SYS.h"
331.1Smatt#include "assym.h"
341.1Smatt
351.1Smatt#if defined(SYSLIBC_SCCS) && !defined(lint)
361.1Smatt	RCSID("$NetBSD: __sigtramp2.S,v 1.1 2014/09/19 17:36:25 matt Exp $")
371.1Smatt#endif /* SYSLIBC_SCCS and not lint */
381.1Smatt
391.1Smatt
401.1Smatt/*
411.1Smatt * The MIPS signal trampoline is invoked only to return from
421.1Smatt * the signal; the kernel calls the signal handler directly.
431.1Smatt *
441.1Smatt * On entry, stack looks like:
451.1Smatt *
461.1Smatt *	sp			->	siginfo_t structure
471.1Smatt *	sp + SIGINFO_SIZE	->	ucontext_t structure
481.1Smatt */
491.1SmattENTRY_NP(__sigtramp_siginfo_2)
501.1Smatt	addi		a0, sp, SIGINFO_SIZE	/* address of ucontext */
511.1Smatt	SYSTRAP(setcontext)			/* and do setcontext */
521.1Smatt	nop
531.1Smatt	move		a0, v0			/* exit with errno */
541.1Smatt	SYSTRAP(exit)				/* if sigreturn fails */
551.1SmattEND(__sigtramp_siginfo_2)
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