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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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