/*      $OpenBSD: syscall.S,v 1.9 2023/05/11 19:35:50 guenther Exp $    */
/*      $NetBSD: syscall.S,v 1.2 2002/06/03 18:30:33 fvdl Exp $ */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *      from: @(#)syscall.s     5.1 (Berkeley) 4/23/90
 */

#include <machine/asm.h>

#include "SYS.h"

SYSENTRY(syscall)
        RETGUARD_SETUP(_thread_sys_syscall, r11)
#ifdef _RET_PROTECTOR
        pushq   8(%rsp)         /* repush 6th argument */
#endif
        RETGUARD_PUSH(r11)
        SYSTRAP(syscall)
        HANDLE_ERRNO;
        RETGUARD_POP(r11)
#ifdef _RET_PROTECTOR
        addq    $8,%rsp         /* repush 6th argument */
#endif
        RETGUARD_CHECK(_thread_sys_syscall, r11)
        ret
SYSCALL_END(syscall)