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      1 /*	$NetBSD: compat___sigtramp1.S,v 1.3 2011/01/15 07:31:13 matt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include "SYS.h"
     33 #include "assym.h"
     34 
     35 #if defined(LIBC_SCCS)
     36 __RCSID("$NetBSD: compat___sigtramp1.S,v 1.3 2011/01/15 07:31:13 matt Exp $")
     37 #endif
     38 
     39 /*
     40  * On entry, stack and registers look like:
     41  *
     42  *	r3	signal number
     43  *	r4	signal specific code
     44  *	r5	pointer to sigcontext structure
     45  *	lr	address of handler
     46  *
     47  *	sp->	sigcontext structure
     48  */
     49 ENTRY_NOPROFILE(__sigtramp_sigcontext_1)
     50 	addi	%r1,%r1,-CALLFRAMELEN	/* space for callee */
     51 	blrl				/* call handler */
     52 	addi	%r3,%r1,CALLFRAMELEN	/* compute address of sigcontext */
     53 	_DOSYSCALL(compat_16___sigreturn14)	/* and call sigreturn */
     54 	_DOSYSCALL(exit)		/* or exit with errno if failed */
     55 END(__sigtramp_sigcontext_1)
     56