songyanguang
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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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 pagetable_attr.c
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* @brief mmu entry attributes
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* @version 1.
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* @author AIIT XUOS Lab
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* @date 2023.04.26
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*/
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/*************************************************
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File name: pagetable_attr.c
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Description: mmu entry attributes
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Others:
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History:
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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 "mmu.h"
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#include "mmu_common.h"
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#include "asm/pgtable-bits.h"
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#define _PAGE_KERNEL (_PAGE_READ \
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| _PAGE_WRITE \
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| _PAGE_PRESENT \
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| _PAGE_ACCESSED \
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| _PAGE_DIRTY \
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| _PAGE_GLOBAL)
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void GetUsrPteAttr(uintptr_t* attr)
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{
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*attr = _PAGE_KERNEL | _PAGE_USER | _PAGE_EXEC;
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}
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void GetUsrDevPteAttr(uintptr_t* attr)
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{
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*attr = _PAGE_KERNEL | _PAGE_USER;
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}
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void GetDevPteAttr(uintptr_t* attr)
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{
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*attr = _PAGE_KERNEL;
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}
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void GetKernPteAttr(uintptr_t* attr)
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{
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*attr = _PAGE_KERNEL | _PAGE_EXEC;
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}
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void GetPdeAttr(uintptr_t* attr)
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{
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*attr = _PAGE_PRESENT;
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} |