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- /*
- * Copyright (c) 2006-2020, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2024-03-28 Shell Move vector handling codes from context_gcc.S
- */
- #ifndef __ARM64_INC_CONTEXT_H__
- #define __ARM64_INC_CONTEXT_H__
- #include "armv8.h"
- .macro SAVE_CONTEXT_SWITCH, tmpx, tmp2x
- /* Save the entire context. */
- SAVE_FPU sp
- stp x19, x20, [sp, #-0x10]!
- stp x21, x22, [sp, #-0x10]!
- stp x23, x24, [sp, #-0x10]!
- stp x25, x26, [sp, #-0x10]!
- stp x27, x28, [sp, #-0x10]!
- mrs \tmpx, sp_el0
- stp x29, \tmpx, [sp, #-0x10]!
- mrs \tmpx, fpcr
- mrs \tmp2x, fpsr
- stp \tmpx, \tmp2x, [sp, #-0x10]!
- mov \tmpx, #((3 << 6) | 0x5) /* el1h, disable interrupt */
- stp x30, \tmpx, [sp, #-0x10]!
- .endm
- .macro SAVE_CONTEXT_SWITCH_FAST
- /* Save the entire context. */
- add sp, sp, #-1 * CONTEXT_FPU_SIZE
- add sp, sp, #-7 * 16
- mov x19, #((3 << 6) | 0x4 | 0x1) /* el1h, disable interrupt */
- stp lr, x19, [sp, #-0x10]!
- .endm
- .macro _RESTORE_CONTEXT_SWITCH
- ldp x30, x19, [sp], #0x10 /* SPSR and ELR. */
- msr elr_el1, x30
- msr spsr_el1, x19
- /* restore NEON */
- ldp x19, x20, [sp], #0x10
- msr fpcr, x19
- msr fpsr, x20
- ldp x29, x19, [sp], #0x10
- msr sp_el0, x19
- ldp x27, x28, [sp], #0x10
- ldp x25, x26, [sp], #0x10
- ldp x23, x24, [sp], #0x10
- ldp x21, x22, [sp], #0x10
- ldp x19, x20, [sp], #0x10
- RESTORE_FPU sp
- eret
- .endm
- #endif /* __ARM64_INC_CONTEXT_H__ */
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