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/*
* Copyright (c) 2006-2024, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2024-03-25 Shell Trimming unecessary ops and
* improve the performance of ctx switch
*/
#ifndef __ARM64_CONTEXT_H__
#define __ARM64_CONTEXT_H__
#include "../include/context_gcc.h"
#include <rtconfig.h>
#include <asm-generic.h>
#include <asm-fpu.h>
#include <armv8.h>
.macro RESTORE_CONTEXT_SWITCH
_RESTORE_CONTEXT_SWITCH
.endm
.macro RESTORE_IRQ_CONTEXT
ldp x2, x3, [sp], #0x10 /* SPSR and ELR. */
tst x3, #0x1f
msr spsr_el1, x3
msr elr_el1, x2
ldp x29, x30, [sp], #0x10
msr sp_el0, x29
ldp x28, x29, [sp], #0x10
msr fpcr, x28
msr fpsr, x29
ldp x28, x29, [sp], #0x10
ldp x26, x27, [sp], #0x10
ldp x24, x25, [sp], #0x10
ldp x22, x23, [sp], #0x10
ldp x20, x21, [sp], #0x10
ldp x18, x19, [sp], #0x10
ldp x16, x17, [sp], #0x10
ldp x14, x15, [sp], #0x10
ldp x12, x13, [sp], #0x10
ldp x10, x11, [sp], #0x10
ldp x8, x9, [sp], #0x10
ldp x6, x7, [sp], #0x10
ldp x4, x5, [sp], #0x10
ldp x2, x3, [sp], #0x10
ldp x0, x1, [sp], #0x10
RESTORE_FPU sp
#ifdef RT_USING_SMART
beq arch_ret_to_user
#endif
eret
.endm
#endif /* __ARM64_CONTEXT_H__ */
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