/* $NetBSD: fpu.c,v 1.1 2014/08/10 05:47:37 matt Exp $ */

/*-
 * Copyright (c) 2014 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Matt Thomas of 3am Software Foundry.
 *
 * 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.
 */

#include <sys/cdefs.h>

__KERNEL_RCSID(1, "$NetBSD: fpu.c,v 1.1 2014/08/10 05:47:37 matt Exp $");

#include <sys/param.h>
#include <sys/types.h>

#include <aarch64/locore.h>
#include <aarch64/pcb.h>

static void fpu_state_load(lwp_t *, u_int);
static void fpu_state_save(lwp_t *, u_int);
static void fpu_state_release(lwp_t *, u_int);

const pcu_ops_t pcu_fpu_ops = {
	.pcu_id = PCU_FPU,
	.pcu_state_load = fpu_state_load,
	.pcu_state_save = fpu_state_save,
	.pcu_state_release = fpu_state_release,
};

static void
fpu_state_load(lwp_t *l, u_int flags)
{

}
static void
fpu_state_save(lwp_t *l, u_int flags)
{

}
static void
fpu_state_release(lwp_t *l, u_int flags)
{
	l->l_md.md_cpacr = CPACR_FPEN_NONE;
	if (l == curlwp)
		reg_cpacr_el1_write(l->l_md.md_cpacr);
}