rt-thread-official/libcpu/aarch64/common/smccc.S

38 lines
667 B
ArmAsm

/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-09-09 GuEe-GUI The first version
*/
/*
* smc calling convention call
*/
.macro SMCCC_CALL INS
stp x8, x29, [sp,#-16]! /* push the frame pointer (x29) for the purposes of AAPCS64 compatibility */
\INS #0
ldp x8, x29, [sp], #16
stp x0, x1, [x8]
stp x2, x3, [x8, #16]
str x6, [x8, #32]
ret
.endm
/*
* smc call
*/
.globl arm_smc_call
arm_smc_call:
SMCCC_CALL smc
/*
* hvc call
*/
.globl arm_hvc_call
arm_hvc_call:
SMCCC_CALL hvc