projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| fe8ab488 | 1 | /* |
| c3c9b80d | 2 | * Copyright (c) 2020 Apple Inc. All rights reserved. |
| 5ba3f43e A |
3 | * |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 14 | * | |
| 15 | * Please obtain a copy of the License at | |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 25 | * | |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| fe8ab488 | 27 | */ |
| c3c9b80d A |
28 | |
| 29 | #ifndef _ARM64_SMCCC_ASM_H_ | |
| 30 | #define _ARM64_SMCCC_ASM_H_ | |
| 31 | ||
| 32 | #ifndef __ASSEMBLER__ | |
| 33 | #error "This header should only be used in .s files" | |
| f427ee49 | 34 | #endif |
| c3c9b80d A |
35 | |
| 36 | /* | |
| 37 | * SAVE_SMCCC_CLOBBERED_REGISTERS | |
| 38 | * | |
| 39 | * Saves x0-x3 to stack in preparation for an hvc/smc call. | |
| 40 | */ | |
| 41 | ||
| 42 | .macro SAVE_SMCCC_CLOBBERED_REGISTERS | |
| 43 | stp x0, x1, [sp, #- 16]! | |
| 44 | stp x2, x3, [sp, #- 16]! | |
| 45 | .endmacro | |
| 46 | ||
| 47 | /* | |
| 48 | * LOAD_SMCCC_CLOBBERED_REGISTERS | |
| 49 | * | |
| 50 | * Loads x0-x3 from stack after an hvc/smc call. | |
| 51 | */ | |
| 52 | ||
| 53 | .macro LOAD_SMCCC_CLOBBERED_REGISTERS | |
| 54 | ldp x2, x3, [sp], #16 | |
| 55 | ldp x0, x1, [sp], #16 | |
| 56 | .endmacro | |
| 57 | ||
| 58 | #endif /* _ARM64_SMCCC_ASM_H_ */ | |
| 59 | ||
| 60 | /* vim: set ts=4 ft=asm: */ |