songyanguang
113 lines
1.7 KiB
ArmAsm
113 lines
1.7 KiB
ArmAsm
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file trampoline.S
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* @brief trap in and out code
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* @version 1.0
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* @author AIIT XUOS Lab
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* @date 2024-04-22
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*/
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/*************************************************
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File name: trampoline.S
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Description: trap in and out code
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Others:
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History:
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1. Date: 2024-04-22
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Author: AIIT XUOS Lab
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Modification:
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1. first version
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*************************************************/
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#include "memlayout.h"
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#include "core.h"
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.macro savereg
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.endm
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.macro restorereg
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.endm
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.macro usavereg
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.endm
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.macro urestorereg
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.endm
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.global alltraps
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.balign 0x800
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alltraps:
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// Current EL with sp0
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j badtrap
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.balign 0x80
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j badtrap
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.balign 0x80
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j badtrap
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.balign 0x80
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j badtrap
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// Current EL with spx
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.balign 0x80
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j el1sync
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.balign 0x80
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j el1irq
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.balign 0x80
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j badtrap
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.balign 0x80
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j badtrap
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// Lower EL using aarch64
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.balign 0x80
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j el0sync
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.balign 0x80
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j el0irq
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.balign 0x80
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j badtrap
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.balign 0x80
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j badtrap
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// Lower EL using aarch32
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.balign 0x80
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j badtrap
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.balign 0x80
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j badtrap
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.balign 0x80
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j badtrap
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.balign 0x80
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j badtrap
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badtrap:
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j .
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el1sync:
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j .
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el1irq:
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ret
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el0sync:
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ret
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el0irq:
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jal intr_irq_dispatch
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.global trap_return
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trap_return:
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ret
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