53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#pragma once
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#include "types.h"
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// #include <mm_page.h>
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#include <assert.h>
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#include <util.h>
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#include <arch.h>
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#include <vma.h>
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/**
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* @brief 内存空间
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*
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*/
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typedef struct mm_space
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{
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#if IS_ENABLED(CONFIG_MMU)
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page_entry_t mem_dir; //!< MMU根映射表，存放映射信息
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umword_t asid; //!< 进程的ASID
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#else
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void *mm_block; //!< task 的私有内存块
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size_t mm_block_size; //!< 私有内存块的大小
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int mem_block_inx; //!< 内存块号
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#endif
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task_vma_t mem_vma; //!< 虚拟内存区域
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} mm_space_t;
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enum region_rights
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{
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REGION_PRIV = 1,
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REGION_RO = 2,
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REGION_RWX = 3,
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};
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#if !IS_ENABLED(CONFIG_MMU)
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static inline void mm_space_set_ram_block(mm_space_t *mm_space, void *mem, size_t size)
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{
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mm_space->mm_block = mem;
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mm_space->mm_block_size = size;
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}
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static inline void mm_space_get_ram_block(mm_space_t *mm_space, void **mem, size_t *size)
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{
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assert(mem);
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assert(size);
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*mem = mm_space->mm_block;
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*size = mm_space->mm_block_size;
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}
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#else
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static inline page_entry_t *mm_space_get_pdir(mm_space_t *sp)
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{
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return &sp->mem_dir;
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}
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#endif
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int mm_space_init(mm_space_t *mm_space, int is_knl);
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