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__sigtramp2.S revision 1.3 
      1 /*	$NetBSD: __sigtramp2.S,v 1.3 2013/07/16 20:49:42 matt 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "SYS.h"
     30 
     31 /*
     32  * The m68k signal trampoline is invoked only to return from
     33  * the signal; the kernel calls the signal handler directly.
     34  *
     35  * On entry, stack looks like:
     36  *
     37  *		ucontext structure			[12+sizeof(siginfo_t)]
     38  *		siginfo structure			[12]
     39  *		pointer to ucontext structure		[8]
     40  *		pointer to siginfo structure		[4]
     41  *	sp->	signal number				[0]
     42  */
     43 ENTRY_NOPROFILE(__sigtramp_siginfo_2)
     44 	movl	8(%sp),%a0	/* get pointer to ucontext */
     45 	movl	%a0,4(%sp)	/* put it in the argument slot */
     46 				/* fake return address already there */
     47         movl    #SYS_setcontext,%d0
     48         trap    #0
     49 	movl	%d0,4(%sp)	/* error code */
     50 	SYSTRAP(exit)		/* exit */
     51