/*
* Copyright (c) 2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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*/
#ifndef _ARM64_SMCCC_ASM_H_
#define _ARM64_SMCCC_ASM_H_
#ifndef __ASSEMBLER__
#error "This header should only be used in .s files"
#endif
/*
* SAVE_SMCCC_CLOBBERED_REGISTERS
*
* Saves x0-x3 to stack in preparation for an hvc/smc call.
*/
.macro SAVE_SMCCC_CLOBBERED_REGISTERS
stp x0, x1, [sp, #- 16]!
stp x2, x3, [sp, #- 16]!
.endmacro
/*
* LOAD_SMCCC_CLOBBERED_REGISTERS
*
* Loads x0-x3 from stack after an hvc/smc call.
*/
.macro LOAD_SMCCC_CLOBBERED_REGISTERS
ldp x2, x3, [sp], #16
ldp x0, x1, [sp], #16
.endmacro
#endif /* _ARM64_SMCCC_ASM_H_ */
/* vim: set ts=4 ft=asm: */