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compat___sigtramp2.S revision 1.2 
      1 /*	$NetBSD: compat___sigtramp2.S,v 1.2 2011/01/25 02:38:16 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2002 Anders Magnusson, (ragge (at) NetBSD.org).
      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. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 /*
     31  * Signal trampoline; registers when called:
     32  *	sp, pc, psl - obvious
     33  *	ap - points to argument list, see machdep.c:sendsig()
     34  *	fp - address of signal handler
     35  */
     36 
     37 #include "SYS.h"
     38 
     39 #ifdef SYSLIBC_SCCS
     40 RCSID("$NetBSD: compat___sigtramp2.S,v 1.2 2011/01/25 02:38:16 matt Exp $")
     41 #endif
     42 
     43 	.text
     44 	_ALIGN_TEXT
     45 
     46 	.globl	_C_LABEL(__sigtramp_sigcontext_2)
     47 _C_LABEL(__sigtramp_sigcontext_2):
     48 	nop; nop;
     49 	pushr $(R0|R1|R2|R3|R4|R5)	# save scratch registers
     50 	callg (%ap),(%fp)		# use global arg list
     51 	popr $(R0|R1|R2|R3|R4|R5)	# restore regs
     52 	movab 8(%ap),%ap		# arg is pointer to sigctx
     53 	SYSTRAP(compat_16___sigreturn14) # exit from here
     54 	halt				# illegal insn
     55 END(__sigtramp_sigcontext_t)
     56