/* $NetBSD: pthread_md.h,v 1.2 2023/05/25 14:30:02 riastradh Exp $ */

/* $NetBSD: pthread_md.h,v 1.2 2023/05/25 14:30:02 riastradh 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 _LIB_PTHREAD_AARCH64_MD_H
#define _LIB_PTHREAD_AARCH64_MD_H

static inline uintptr_t
pthread__sp(void)
{
uintptr_t ret;

__asm __volatile("mov %0, sp" : "=r" (ret));

return ret;
}

#define pthread__smt_wait() __asm __volatile("wfe") /* wfe */
#define pthread__smt_wake() __asm __volatile("sev") /* sev */

#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])

/*
* Set initial, sane values for registers whose values aren't just
* "don't care".
*/
#define _INITCONTEXT_U_MD(ucp) \
(ucp)->uc_mcontext.__gregs[_REG_SPSR] = 0;

#endif /* _LIB_PTHREAD_AARCH64_MD_H */