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https://github.com/RT-Thread/rt-thread.git
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fd496e4cc4
feat: overall implementation of vector irq This patch generalize the irq handling on up/mp system by adding the `rt_hw_irq_exit()` & `rt_hw_vector_irq_sched()` API. Changes: - Added `rt_hw_irq_exit()` and `rt_hw_vector_irq_sched()` APIs for unified IRQ management. - Refactored assembly code for both UP and MP systems to use the new IRQ handling flow. - Removed redundant code and optimized exception handling paths. Signed-off-by: Shell <smokewood@qq.com>
127 lines
2.7 KiB
ArmAsm
127 lines
2.7 KiB
ArmAsm
/*
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* Copyright (c) 2006-2020, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-10-06 ZhaoXiaowei the first version
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* 2024-03-28 Shell Move vector handling codes from context_gcc.S
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*/
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#ifndef __ASSEMBLY__
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#define __ASSEMBLY__
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#endif
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#include <rtconfig.h>
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.text
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.globl system_vectors
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.globl vector_exception
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.globl vector_irq
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.globl vector_fiq
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system_vectors:
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.align 11
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.set VBAR, system_vectors
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.org VBAR
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/* Exception from CurrentEL (EL1) with SP_EL0 (SPSEL=1) */
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.org (VBAR + 0x00 + 0)
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b vector_serror /* Synchronous */
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.org (VBAR + 0x80 + 0)
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b vector_serror /* IRQ/vIRQ */
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.org (VBAR + 0x100 + 0)
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b vector_serror /* FIQ/vFIQ */
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.org (VBAR + 0x180 + 0)
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b vector_serror /* Error/vError */
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/* Exception from CurrentEL (EL1) with SP_ELn */
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.org (VBAR + 0x200 + 0)
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b vector_exception /* Synchronous */
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.org (VBAR + 0x280 + 0)
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b vector_irq /* IRQ/vIRQ */
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.org (VBAR + 0x300 + 0)
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b vector_fiq /* FIQ/vFIQ */
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.org (VBAR + 0x380 + 0)
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b vector_serror
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/* Exception from lower EL, aarch64 */
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.org (VBAR + 0x400 + 0)
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b vector_exception
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.org (VBAR + 0x480 + 0)
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b vector_irq
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.org (VBAR + 0x500 + 0)
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b vector_fiq
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.org (VBAR + 0x580 + 0)
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b vector_serror
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/* Exception from lower EL, aarch32 */
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.org (VBAR + 0x600 + 0)
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b vector_serror
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.org (VBAR + 0x680 + 0)
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b vector_serror
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.org (VBAR + 0x700 + 0)
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b vector_serror
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.org (VBAR + 0x780 + 0)
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b vector_serror
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#include "include/vector_gcc.h"
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#define EFRAMEX x19
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START_POINT(vector_exception)
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SAVE_IRQ_CONTEXT
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mov EFRAMEX, sp
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SAVE_USER_CTX EFRAMEX, x0
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mov x0, EFRAMEX
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bl rt_hw_trap_exception
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RESTORE_USER_CTX EFRAMEX, x0
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RESTORE_IRQ_CONTEXT
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START_POINT_END(vector_exception)
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START_POINT(vector_serror)
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SAVE_IRQ_CONTEXT
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mov EFRAMEX, sp
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SAVE_USER_CTX EFRAMEX, x0
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mov x0, EFRAMEX
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bl rt_hw_trap_serror
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RESTORE_USER_CTX EFRAMEX, x0
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NEVER_RETURN
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START_POINT_END(vector_serror)
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START_POINT(vector_irq)
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SAVE_IRQ_CONTEXT
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mov EFRAMEX, sp
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/* trace IRQ level */
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bl rt_interrupt_enter
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SAVE_USER_CTX EFRAMEX, x0
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/* handline IRQ */
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mov x0, EFRAMEX
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bl rt_hw_trap_irq
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RESTORE_USER_CTX EFRAMEX, x0
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/* restore IRQ level */
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bl rt_interrupt_leave
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mov x0, EFRAMEX
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bl rt_hw_vector_irq_sched
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b rt_hw_irq_exit
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START_POINT_END(vector_irq)
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rt_hw_irq_exit:
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.globl rt_hw_irq_exit
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RESTORE_IRQ_CONTEXT
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