/* $NetBSD: locore.h,v 1.10 2026/06/22 07:52:32 skrll 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.
 */

#ifndef _AARCH64_LOCORE_H_
#define _AARCH64_LOCORE_H_

#ifdef __aarch64__

#ifdef _KERNEL_OPT
#include "opt_multiprocessor.h"
#endif

#ifdef _LOCORE

#define ENABLE_INTERRUPT        \
        msr daifclr, #__SHIFTOUT(DAIF_I | DAIF_F, DAIF_MASK)
#define DISABLE_INTERRUPT       \
        msr daifset, #__SHIFTOUT(DAIF_I | DAIF_F, DAIF_MASK)

#else /* _LOCORE */

#include <sys/types.h>

#include <aarch64/armreg.h>
#include <aarch64/machdep.h>    /* arm32 compat */

/* for compatibility arch/arm */
#define I32_bit                 DAIF_I
#define F32_bit                 DAIF_F
#define cpsie(psw)              daif_enable((psw))
#define cpsid(psw)              daif_disable((psw))

#define ENABLE_INTERRUPT()                                              \
        reg_daifclr_write(__SHIFTOUT(DAIF_I | DAIF_F, DAIF_MASK))
#define DISABLE_INTERRUPT()                                             \
        reg_daifset_write(__SHIFTOUT(DAIF_I | DAIF_F, DAIF_MASK))
#define DISABLE_INTERRUPT_SAVE()                                        \
        daif_disable(DAIF_I | DAIF_F)

static inline void __unused
daif_enable(register_t psw)
{
        if (!__builtin_constant_p(psw)) {
                reg_daif_write(reg_daif_read() & ~psw);
        } else {
                reg_daifclr_write(__SHIFTOUT(psw, DAIF_MASK));
        }
}

static inline register_t __unused
daif_disable(register_t psw)
{
        register_t oldpsw = reg_daif_read();
        if ((oldpsw & psw) != psw) {
                if (!__builtin_constant_p(psw)) {
                        reg_daif_write(oldpsw | psw);
                } else {
                        reg_daifset_write(__SHIFTOUT(psw, DAIF_MASK));
                }
        }
        return oldpsw;
}

#endif /* _LOCORE */

#elif defined(__arm__)

#include <arm/locore.h>

#endif /* __aarch64__/__arm__ */

#endif /* _AARCH64_LOCORE_H_ */