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__sigtramp2.S revision 1.1 
      1 /*	$NetBSD: __sigtramp2.S,v 1.1 2003/09/22 14:42:04 cl Exp $
      2 
      3 /*-
      4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the NetBSD
     18  *	Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 #include "SYS.h"
     37 
     38 /*
     39  * The m68k signal trampoline is invoked only to return from
     40  * the signal; the kernel calls the signal handler directly.
     41  *
     42  * On entry, stack looks like:
     43  *
     44  *		ucontext structure			[12+sizeof(siginfo_t)]
     45  *		siginfo structure			[12]
     46  *		pointer to ucontext structure		[8]
     47  *		pointer to siginfo structure		[4]
     48  *	sp->	signal number				[0]
     49  */
     50 ENTRY_NOPROFILE(__sigtramp_siginfo_2)
     51 	movl	%sp@(8),%a0	/* get pointer to ucontext */
     52 	movl	%a0,%sp@(4)	/* put it in the argument slot */
     53 				/* fake return address already there */
     54         movl    #SYS_setcontext,%d0
     55         trap    #0
     56 	movl	%d0,%sp@(4)	/* error code */
     57 	SYSTRAP(exit)		/* exit */
     58