NetBSD-5.0.2/sys/arch/alpha/alpha/linux_sigcode.s

/* $NetBSD: linux_sigcode.s,v 1.3 2008/04/28 20:23:10 martin Exp $ */

/*-
 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
 * NASA Ames Research Center.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

.stabs	__FILE__,100,0,0,kernel_text

#include <compat/linux/linux_syscall.h>

#include <machine/asm.h>

__KERNEL_RCSID(0, "$NetBSD: linux_sigcode.s,v 1.3 2008/04/28 20:23:10 martin Exp $");

#include "assym.h"

.stabs	__FILE__,132,0,0,kernel_text

/*
 * Linux signal trampoline code.  Almost identical to the normal one.
 */

NESTED_NOPROFILE(linux_sigcode,0,0,ra,0,0)
	lda	sp, -16(sp)		/* save the sigcontext pointer */
	stq	a2, 0(sp)
	jsr	ra, (t12)		/* call the signal handler */
	ldq	a0, 0(sp)		/* get the sigcontext pointer */
	lda	sp, 16(sp)
	LINUX_CALLSYS_NOERROR(sigreturn)
	mov	v0, a0
	LINUX_CALLSYS_NOERROR(exit)
XNESTED(linux_esigcode,0)
	END(linux_sigcode)

NESTED_NOPROFILE(linux_rt_sigcode,0,0,ra,0,0)
	lda	sp, -16(sp)		/* save the sigcontext pointer */
	stq	a2, 0(sp)
	jsr	ra, (t12)		/* call the signal handler */
	ldq	a0, 0(sp)		/* get the sigcontext pointer */
	lda	sp, 16(sp)
	LINUX_CALLSYS_NOERROR(rt_sigreturn)
	mov	v0, a0
	LINUX_CALLSYS_NOERROR(exit)
XNESTED(linux_rt_esigcode,0)
	END(linux_rt_sigcode)