/*	$OpenBSD: SYS.h,v 1.13 2003/06/02 20:28:04 mickey Exp $	*/

/*
 * Copyright (c) 1998-2002 Michael Shalayeff
 * All rights reserved.
 *
 * 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 AUTHOR ``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 AUTHOR 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 MIND
 * 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.
 */

#include <sys/syscall.h>
#include <machine/asm.h>
#undef _LOCORE
#define _LOCORE
#include <machine/frame.h>
#include <machine/vmparam.h>
#undef _LOCORE

#define SYSENTRY(x,n)				!\
ENTRY(__CONCAT(_thread_sys_,x),n)		!\
	.weak x ! .set x, __CONCAT(_thread_sys_,x)
#define	SYSEXIT(x)				!\
EXIT(__CONCAT(_thread_sys_,x))

#define	SYSCALL(x)				!\
	stw	rp, HPPA_FRAME_ERP(sr0,sp)	!\
	ldil	L%SYSCALLGATE, r1		!\
	ble	4(sr7, r1)			!\
	ldi	__CONCAT(SYS_,x), t1		!\
	ldw	HPPA_FRAME_ERP(sr0,sp), rp	!\
	comb,=,n r0, t1, __CONCAT(x,$noerr)	!\
	.import	errno, data			!\
	ldil	L%errno, r1			!\
	stw	t1, R%errno(r1)			!\
	ldi	-1, ret0			!\
	bv	r0(rp)				!\
	ldi	-1, ret1			!\
	.label	__CONCAT(x,$noerr)

#define	PSEUDO(x,y)				!\
SYSENTRY(x,0)					!\
	SYSCALL(y)				!\
	bv	r0(rp)				!\
	nop					!\
SYSEXIT(x)

#define	PSEUDO_NOERROR(x,y)			!\
SYSENTRY(x,0)					!\
	stw	rp, HPPA_FRAME_ERP(sr0,sp)	!\
	ldil	L%SYSCALLGATE, r1		!\
	ble	4(sr7, r1)			!\
	ldi	__CONCAT(SYS_,y), t1		!\
	ldw	HPPA_FRAME_ERP(sr0,sp), rp	!\
	bv	r0(rp)				!\
	nop					!\
SYSEXIT(x)

#define	RSYSCALL(x)	PSEUDO(x,x)