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Kernel/memory-test
This commit is contained in:
EnderIce2
@ -1,898 +0,0 @@
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __FENNIX_KERNEL_INTERNAL_MEMORY_H__
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#define __FENNIX_KERNEL_INTERNAL_MEMORY_H__
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#ifdef __cplusplus
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#include <filesystem.hpp>
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#include <boot/binfo.h>
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#include <bitmap.hpp>
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#include <lock.hpp>
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#include <std.hpp>
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#endif // __cplusplus
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#include <types.h>
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#ifdef __cplusplus
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extern uintptr_t _kernel_start, _kernel_end;
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extern uintptr_t _bootstrap_start, _bootstrap_end;
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extern uintptr_t _kernel_text_end, _kernel_data_end, _kernel_rodata_end;
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// kilobyte
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#define TO_KB(d) ((d) / 1024)
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// megabyte
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#define TO_MB(d) ((d) / 1024 / 1024)
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// gigabyte
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#define TO_GB(d) ((d) / 1024 / 1024 / 1024)
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// terabyte
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#define TO_TB(d) ((d) / 1024 / 1024 / 1024 / 1024)
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// petabyte
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#define TO_PB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024)
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// exobyte
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#define TO_EB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024 / 1024)
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// zettabyte
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#define TO_ZB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024)
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// yottabyte
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#define TO_YB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024)
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// brontobyte
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#define TO_BB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024)
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// geopbyte
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#define TO_GPB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024 / 1024)
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#define PAGE_SIZE 0x1000 // 4KB
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#define PAGE_SIZE_4K PAGE_SIZE // 4KB
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#define PAGE_SIZE_2M 0x200000 // 2MB
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#define PAGE_SIZE_1G 0x40000000 // 1GB
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#define STACK_SIZE 0x4000 // 16kb
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#define USER_STACK_SIZE 0x2000 // 8kb
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// To pages
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#define TO_PAGES(d) (((d) + PAGE_SIZE - 1) / PAGE_SIZE)
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// From pages
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#define FROM_PAGES(d) ((d)*PAGE_SIZE)
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#if defined(a64) || defined(aa64)
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#define NORMAL_VMA_OFFSET 0xFFFF800000000000
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#define KERNEL_VMA_OFFSET 0xFFFFFFFF80000000
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#define KERNEL_HEAP_BASE 0xFFFFA00000000000
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#define USER_HEAP_BASE 0xFFFFB00000000000
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#define USER_STACK_BASE 0xFFFFEFFFFFFF0000
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#elif defined(a32)
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#define NORMAL_VMA_OFFSET 0x80000000
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#define KERNEL_VMA_OFFSET 0xC0000000
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#define KERNEL_HEAP_BASE 0xA0000000
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#define USER_HEAP_BASE 0xB0000000
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#define USER_STACK_BASE 0xEFFFFFFF
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#endif
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namespace Memory
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{
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enum MemoryAllocatorType
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{
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None,
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Pages,
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XallocV1,
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liballoc11
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};
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/**
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* @brief https://wiki.osdev.org/images/4/41/64-bit_page_tables1.png
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* @brief https://wiki.osdev.org/images/6/6b/64-bit_page_tables2.png
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*/
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enum PTFlag
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{
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/** @brief Present */
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P = 1 << 0,
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/** @brief Read/Write */
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RW = 1 << 1,
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/** @brief User/Supervisor */
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US = 1 << 2,
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/** @brief Write-Through */
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PWT = 1 << 3,
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/** @brief Cache Disable */
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PCD = 1 << 4,
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/** @brief Accessed */
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A = 1 << 5,
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/** @brief Dirty */
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D = 1 << 6,
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/** @brief Page Size */
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PS = 1 << 7,
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/** @brief Global */
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G = 1 << 8,
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/** @brief Available 0 */
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AVL0 = 1 << 9,
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/** @brief Available 1 */
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AVL1 = 1 << 10,
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/** @brief Available 2 */
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AVL2 = 1 << 11,
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/** @brief Page Attribute Table */
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PAT = 1 << 12,
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/** @brief Available 3 */
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AVL3 = (uint64_t)1 << 52,
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/** @brief Available 4 */
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AVL4 = (uint64_t)1 << 53,
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/** @brief Available 5 */
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AVL5 = (uint64_t)1 << 54,
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/** @brief Available 6 */
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AVL6 = (uint64_t)1 << 55,
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/** @brief Available 7 */
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AVL7 = (uint64_t)1 << 56,
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/** @brief Available 8 */
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AVL8 = (uint64_t)1 << 57,
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/** @brief Available 9 */
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AVL9 = (uint64_t)1 << 58,
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/** @brief Protection Key 0 */
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PK0 = (uint64_t)1 << 59,
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/** @brief Protection Key 1 */
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PK1 = (uint64_t)1 << 60,
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/** @brief Protection Key 2 */
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PK2 = (uint64_t)1 << 61,
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/** @brief Protection Key 3 */
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PK3 = (uint64_t)1 << 62,
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/** @brief Execute Disable */
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XD = (uint64_t)1 << 63
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};
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/* 2.2 Paging in IA-32e Mode - https://composter.com.ua/documents/TLBs_Paging-Structure_Caches_and_Their_Invalidation.pdf */
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union __packed PageTableEntry
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{
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struct
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{
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uint64_t Present : 1; // 0
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uint64_t ReadWrite : 1; // 1
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uint64_t UserSupervisor : 1; // 2
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uint64_t WriteThrough : 1; // 3
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uint64_t CacheDisable : 1; // 4
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uint64_t Accessed : 1; // 5
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uint64_t Dirty : 1; // 6
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uint64_t PageAttributeTable : 1; // 7
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uint64_t Global : 1; // 8
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uint64_t Available0 : 3; // 9-11
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uint64_t Address : 40; // 12-51
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uint64_t Available1 : 7; // 52-58
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uint64_t ProtectionKey : 4; // 59-62
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uint64_t ExecuteDisable : 1; // 63
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};
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uint64_t raw;
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/** @brief Set Address */
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void SetAddress(uintptr_t _Address)
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{
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#if defined(a64)
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_Address &= 0x000000FFFFFFFFFF;
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this->raw &= 0xFFF0000000000FFF;
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this->raw |= (_Address << 12);
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#elif defined(a32)
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_Address &= 0x000FFFFF;
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this->raw &= 0xFFC00003;
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this->raw |= (_Address << 12);
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#elif defined(aa64)
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_Address &= 0x000000FFFFFFFFFF;
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this->raw &= 0xFFF0000000000FFF;
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this->raw |= (_Address << 12);
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#endif
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}
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/** @brief Get Address */
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uintptr_t GetAddress()
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{
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#if defined(a64)
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return (this->raw & 0x000FFFFFFFFFF000) >> 12;
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#elif defined(a32)
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return (this->raw & 0x003FFFFF000) >> 12;
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#elif defined(aa64)
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return (this->raw & 0x000FFFFFFFFFF000) >> 12;
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#endif
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}
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};
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struct __packed PageTableEntryPtr
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{
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PageTableEntry Entries[512];
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};
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union __packed PageDirectoryEntry
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{
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struct
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{
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uint64_t Present : 1; // 0
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uint64_t ReadWrite : 1; // 1
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uint64_t UserSupervisor : 1; // 2
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uint64_t WriteThrough : 1; // 3
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uint64_t CacheDisable : 1; // 4
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uint64_t Accessed : 1; // 5
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uint64_t Available0 : 1; // 6
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uint64_t PageSize : 1; // 7
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uint64_t Available1 : 4; // 8-11
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uint64_t Address : 40; // 12-51
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uint64_t Available2 : 11; // 52-62
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uint64_t ExecuteDisable : 1; // 63
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};
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struct
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{
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uint64_t Present : 1; // 0
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uint64_t ReadWrite : 1; // 1
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uint64_t UserSupervisor : 1; // 2
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uint64_t WriteThrough : 1; // 3
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uint64_t CacheDisable : 1; // 4
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uint64_t Accessed : 1; // 5
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uint64_t Dirty : 1; // 6
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uint64_t PageSize : 1; // 7
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uint64_t Global : 1; // 8
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uint64_t Available0 : 3; // 9-11
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uint64_t PageAttributeTable : 1; // 12
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uint64_t Reserved0 : 8; // 13-20
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uint64_t Address : 31; // 21-51
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uint64_t Available1 : 7; // 52-58
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uint64_t ProtectionKey : 4; // 59-62
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uint64_t ExecuteDisable : 1; // 63
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} TwoMB;
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uint64_t raw;
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/** @brief Set PageTableEntryPtr address */
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void SetAddress(uintptr_t _Address)
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{
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#if defined(a64)
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_Address &= 0x000000FFFFFFFFFF;
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this->raw &= 0xFFF0000000000FFF;
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this->raw |= (_Address << 12);
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#elif defined(a32)
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_Address &= 0x000FFFFF;
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this->raw &= 0xFFC00003;
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this->raw |= (_Address << 12);
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#elif defined(aa64)
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_Address &= 0x000000FFFFFFFFFF;
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this->raw &= 0xFFF0000000000FFF;
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this->raw |= (_Address << 12);
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#endif
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}
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/** @brief Get PageTableEntryPtr address */
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uintptr_t GetAddress()
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{
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#if defined(a64)
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return (this->raw & 0x000FFFFFFFFFF000) >> 12;
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#elif defined(a32)
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return (this->raw & 0x003FFFFF000) >> 12;
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#elif defined(aa64)
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return (this->raw & 0x000FFFFFFFFFF000) >> 12;
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#endif
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}
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};
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struct __packed PageDirectoryEntryPtr
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{
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PageDirectoryEntry Entries[512];
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};
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union __packed PageDirectoryPointerTableEntry
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{
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struct
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{
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uint64_t Present : 1; // 0
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uint64_t ReadWrite : 1; // 1
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uint64_t UserSupervisor : 1; // 2
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uint64_t WriteThrough : 1; // 3
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uint64_t CacheDisable : 1; // 4
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uint64_t Accessed : 1; // 5
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uint64_t Available0 : 1; // 6
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uint64_t PageSize : 1; // 7
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uint64_t Available1 : 4; // 8-11
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uint64_t Address : 40; // 12-51
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uint64_t Available2 : 11; // 52-62
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uint64_t ExecuteDisable : 1; // 63
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};
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struct
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{
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uint64_t Present : 1; // 0
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uint64_t ReadWrite : 1; // 1
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uint64_t UserSupervisor : 1; // 2
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uint64_t WriteThrough : 1; // 3
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uint64_t CacheDisable : 1; // 4
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uint64_t Accessed : 1; // 5
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uint64_t Dirty : 1; // 6
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uint64_t PageSize : 1; // 7
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uint64_t Global : 1; // 8
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uint64_t Available0 : 3; // 9-11
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uint64_t PageAttributeTable : 1; // 12
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uint64_t Reserved0 : 17; // 13-29
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uint64_t Address : 22; // 30-51
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uint64_t Available1 : 7; // 52-58
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uint64_t ProtectionKey : 4; // 59-62
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uint64_t ExecuteDisable : 1; // 63
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} OneGB;
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uint64_t raw;
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/** @brief Set PageDirectoryEntryPtr address */
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void SetAddress(uintptr_t _Address)
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{
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#if defined(a64)
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_Address &= 0x000000FFFFFFFFFF;
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this->raw &= 0xFFF0000000000FFF;
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this->raw |= (_Address << 12);
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#elif defined(a32)
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_Address &= 0x000FFFFF;
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this->raw &= 0xFFC00003;
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this->raw |= (_Address << 12);
|
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#elif defined(aa64)
|
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_Address &= 0x000000FFFFFFFFFF;
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this->raw &= 0xFFF0000000000FFF;
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this->raw |= (_Address << 12);
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#endif
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}
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/** @brief Get PageDirectoryEntryPtr address */
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uintptr_t GetAddress()
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{
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#if defined(a64)
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return (this->raw & 0x000FFFFFFFFFF000) >> 12;
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#elif defined(a32)
|
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return (this->raw & 0x003FFFFF000) >> 12;
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#elif defined(aa64)
|
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return (this->raw & 0x000FFFFFFFFFF000) >> 12;
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#endif
|
||||
}
|
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};
|
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|
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struct __packed PageDirectoryPointerTableEntryPtr
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{
|
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PageDirectoryPointerTableEntry Entries[512];
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};
|
||||
|
||||
union __packed PageMapLevel4
|
||||
{
|
||||
struct
|
||||
{
|
||||
uint64_t Present : 1; // 0
|
||||
uint64_t ReadWrite : 1; // 1
|
||||
uint64_t UserSupervisor : 1; // 2
|
||||
uint64_t WriteThrough : 1; // 3
|
||||
uint64_t CacheDisable : 1; // 4
|
||||
uint64_t Accessed : 1; // 5
|
||||
uint64_t Available0 : 1; // 6
|
||||
uint64_t Reserved0 : 1; // 7
|
||||
uint64_t Available1 : 4; // 8-11
|
||||
uint64_t Address : 40; // 12-51
|
||||
uint64_t Available2 : 11; // 52-62
|
||||
uint64_t ExecuteDisable : 1; // 63
|
||||
};
|
||||
uint64_t raw;
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||||
|
||||
/** @brief Set PageDirectoryPointerTableEntryPtr address */
|
||||
void SetAddress(uintptr_t _Address)
|
||||
{
|
||||
#if defined(a64)
|
||||
_Address &= 0x000000FFFFFFFFFF;
|
||||
this->raw &= 0xFFF0000000000FFF;
|
||||
this->raw |= (_Address << 12);
|
||||
#elif defined(a32)
|
||||
_Address &= 0x000FFFFF;
|
||||
this->raw &= 0xFFC00003;
|
||||
this->raw |= (_Address << 12);
|
||||
#elif defined(aa64)
|
||||
_Address &= 0x000000FFFFFFFFFF;
|
||||
this->raw &= 0xFFF0000000000FFF;
|
||||
this->raw |= (_Address << 12);
|
||||
#endif
|
||||
}
|
||||
|
||||
/** @brief Get PageDirectoryPointerTableEntryPtr address */
|
||||
uintptr_t GetAddress()
|
||||
{
|
||||
#if defined(a64)
|
||||
return (this->raw & 0x000FFFFFFFFFF000) >> 12;
|
||||
#elif defined(a32)
|
||||
return (this->raw & 0x003FFFFF000) >> 12;
|
||||
#elif defined(aa64)
|
||||
return (this->raw & 0x000FFFFFFFFFF000) >> 12;
|
||||
#endif
|
||||
}
|
||||
};
|
||||
|
||||
struct PageTable4
|
||||
{
|
||||
PageMapLevel4 Entries[512];
|
||||
|
||||
/**
|
||||
* @brief Update CR3 with this PageTable4
|
||||
*/
|
||||
void Update()
|
||||
{
|
||||
#if defined(a86)
|
||||
asmv("mov %0, %%cr3" ::"r"(this));
|
||||
#elif defined(aa64)
|
||||
asmv("msr ttbr0_el1, %0" ::"r"(this));
|
||||
#endif
|
||||
}
|
||||
} __aligned(0x1000);
|
||||
|
||||
struct __packed PageMapLevel5
|
||||
{
|
||||
/* FIXME: NOT IMPLEMENTED! */
|
||||
};
|
||||
|
||||
struct PageTable5
|
||||
{
|
||||
PageMapLevel5 Entries[512];
|
||||
} __aligned(0x1000);
|
||||
|
||||
class Physical
|
||||
{
|
||||
private:
|
||||
NewLock(MemoryLock);
|
||||
|
||||
uint64_t TotalMemory = 0;
|
||||
uint64_t FreeMemory = 0;
|
||||
uint64_t ReservedMemory = 0;
|
||||
uint64_t UsedMemory = 0;
|
||||
uint64_t PageBitmapIndex = 0;
|
||||
Bitmap PageBitmap;
|
||||
|
||||
public:
|
||||
Bitmap GetPageBitmap() { return PageBitmap; }
|
||||
|
||||
/**
|
||||
* @brief Get Total Memory
|
||||
*
|
||||
* @return uint64_t
|
||||
*/
|
||||
uint64_t GetTotalMemory();
|
||||
|
||||
/**
|
||||
* @brief Get Free Memory
|
||||
*
|
||||
* @return uint64_t
|
||||
*/
|
||||
uint64_t GetFreeMemory();
|
||||
|
||||
/**
|
||||
* @brief Get Reserved Memory
|
||||
*
|
||||
* @return uint64_t
|
||||
*/
|
||||
uint64_t GetReservedMemory();
|
||||
|
||||
/**
|
||||
* @brief Get Used Memory
|
||||
*
|
||||
* @return uint64_t
|
||||
*/
|
||||
uint64_t GetUsedMemory();
|
||||
|
||||
/**
|
||||
* @brief Swap page
|
||||
*
|
||||
* @param Address Address of the page
|
||||
* @return true if swap was successful
|
||||
* @return false if swap was unsuccessful
|
||||
*/
|
||||
bool SwapPage(void *Address);
|
||||
|
||||
/**
|
||||
* @brief Swap pages
|
||||
*
|
||||
* @param Address Address of the pages
|
||||
* @param PageCount Number of pages
|
||||
* @return true if swap was successful
|
||||
* @return false if swap was unsuccessful
|
||||
*/
|
||||
bool SwapPages(void *Address, size_t PageCount);
|
||||
|
||||
/**
|
||||
* @brief Unswap page
|
||||
*
|
||||
* @param Address Address of the page
|
||||
* @return true if unswap was successful
|
||||
* @return false if unswap was unsuccessful
|
||||
*/
|
||||
bool UnswapPage(void *Address);
|
||||
|
||||
/**
|
||||
* @brief Unswap pages
|
||||
*
|
||||
* @param Address Address of the pages
|
||||
* @param PageCount Number of pages
|
||||
* @return true if unswap was successful
|
||||
* @return false if unswap was unsuccessful
|
||||
*/
|
||||
bool UnswapPages(void *Address, size_t PageCount);
|
||||
|
||||
/**
|
||||
* @brief Lock page
|
||||
*
|
||||
* @param Address Address of the page
|
||||
*/
|
||||
void LockPage(void *Address);
|
||||
|
||||
/**
|
||||
* @brief Lock pages
|
||||
*
|
||||
* @param Address Address of the pages
|
||||
* @param PageCount Number of pages
|
||||
*/
|
||||
void LockPages(void *Address, size_t PageCount);
|
||||
|
||||
void ReservePage(void *Address);
|
||||
void ReservePages(void *Address, size_t PageCount);
|
||||
void UnreservePage(void *Address);
|
||||
void UnreservePages(void *Address, size_t PageCount);
|
||||
|
||||
/**
|
||||
* @brief Request page
|
||||
*
|
||||
* @return void* Allocated page address
|
||||
*/
|
||||
void *RequestPage();
|
||||
|
||||
/**
|
||||
* @brief Request pages
|
||||
*
|
||||
* @param PageCount Number of pages
|
||||
* @return void* Allocated pages address
|
||||
*/
|
||||
void *RequestPages(size_t Count);
|
||||
|
||||
/**
|
||||
* @brief Free page
|
||||
*
|
||||
* @param Address Address of the page
|
||||
*/
|
||||
void FreePage(void *Address);
|
||||
|
||||
/**
|
||||
* @brief Free pages
|
||||
*
|
||||
* @param Address Address of the pages
|
||||
* @param PageCount Number of pages
|
||||
*/
|
||||
void FreePages(void *Address, size_t Count);
|
||||
|
||||
/** @brief Do not use. */
|
||||
void Init(BootInfo *Info);
|
||||
|
||||
/** @brief Do not use. */
|
||||
Physical();
|
||||
|
||||
/** @brief Do not use. */
|
||||
~Physical();
|
||||
};
|
||||
|
||||
class Virtual
|
||||
{
|
||||
private:
|
||||
NewLock(MemoryLock);
|
||||
PageTable4 *Table = nullptr;
|
||||
|
||||
public:
|
||||
enum MapType
|
||||
{
|
||||
NoMapType,
|
||||
FourKB,
|
||||
TwoMB,
|
||||
OneGB
|
||||
};
|
||||
|
||||
class PageMapIndexer
|
||||
{
|
||||
public:
|
||||
uintptr_t PMLIndex = 0;
|
||||
uintptr_t PDPTEIndex = 0;
|
||||
uintptr_t PDEIndex = 0;
|
||||
uintptr_t PTEIndex = 0;
|
||||
PageMapIndexer(uintptr_t VirtualAddress);
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief Check if page has the specified flag.
|
||||
*
|
||||
* @param VirtualAddress Virtual address of the page
|
||||
* @param Flag Flag to check
|
||||
* @param Type Type of the page. Check MapType enum.
|
||||
* @return true if page has the specified flag.
|
||||
* @return false if page is has the specified flag.
|
||||
*/
|
||||
bool Check(void *VirtualAddress, PTFlag Flag = PTFlag::P, MapType Type = MapType::FourKB);
|
||||
|
||||
/**
|
||||
* @brief Get physical address of the page.
|
||||
* @param VirtualAddress Virtual address of the page.
|
||||
* @return Physical address of the page.
|
||||
*/
|
||||
void *GetPhysical(void *VirtualAddress);
|
||||
|
||||
/**
|
||||
* @brief Map page.
|
||||
*
|
||||
* @param VirtualAddress Virtual address of the page.
|
||||
* @param PhysicalAddress Physical address of the page.
|
||||
* @param Flags Flags of the page. Check PTFlag enum.
|
||||
* @param Type Type of the page. Check MapType enum.
|
||||
*/
|
||||
void Map(void *VirtualAddress, void *PhysicalAddress, uint64_t Flag = PTFlag::P, MapType Type = MapType::FourKB);
|
||||
|
||||
/**
|
||||
* @brief Map multiple pages.
|
||||
*
|
||||
* @param VirtualAddress First virtual address of the page.
|
||||
* @param PhysicalAddress First physical address of the page.
|
||||
* @param Length Length to map.
|
||||
* @param Flags Flags of the page. Check PTFlag enum.
|
||||
* @param Type Type of the page. Check MapType enum.
|
||||
*/
|
||||
__always_inline inline void Map(void *VirtualAddress, void *PhysicalAddress, size_t Length, uint64_t Flags, MapType Type = MapType::FourKB)
|
||||
{
|
||||
int PageSize = PAGE_SIZE_4K;
|
||||
|
||||
if (Type == MapType::TwoMB)
|
||||
PageSize = PAGE_SIZE_2M;
|
||||
else if (Type == MapType::OneGB)
|
||||
PageSize = PAGE_SIZE_1G;
|
||||
|
||||
for (uintptr_t i = 0; i < Length; i += PageSize)
|
||||
this->Map((void *)((uintptr_t)VirtualAddress + i), (void *)((uintptr_t)PhysicalAddress + i), Flags, Type);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Map multiple pages efficiently.
|
||||
*
|
||||
* This function will detect the best page size to map the pages.
|
||||
*
|
||||
* @note This function will not check if PSE or 1GB pages are enabled or supported.
|
||||
*
|
||||
* @param VirtualAddress First virtual address of the page.
|
||||
* @param PhysicalAddress First physical address of the page.
|
||||
* @param Length Length of the pages.
|
||||
* @param Flags Flags of the page. Check PTFlag enum.
|
||||
* @param Fit If true, the function will try to fit the pages in the smallest page size.
|
||||
* @param FailOnModulo If true, the function will return NoMapType if the length is not a multiple of the page size.
|
||||
* @return The best page size to map the pages.
|
||||
*/
|
||||
__always_inline inline MapType OptimizedMap(void *VirtualAddress, void *PhysicalAddress, size_t Length, uint64_t Flags, bool Fit = false, bool FailOnModulo = false)
|
||||
{
|
||||
if (unlikely(Fit))
|
||||
{
|
||||
while (Length >= PAGE_SIZE_1G)
|
||||
{
|
||||
this->Map(VirtualAddress, PhysicalAddress, Length, Flags, Virtual::MapType::OneGB);
|
||||
VirtualAddress = (void *)((uintptr_t)VirtualAddress + PAGE_SIZE_1G);
|
||||
PhysicalAddress = (void *)((uintptr_t)PhysicalAddress + PAGE_SIZE_1G);
|
||||
Length -= PAGE_SIZE_1G;
|
||||
}
|
||||
|
||||
while (Length >= PAGE_SIZE_2M)
|
||||
{
|
||||
this->Map(VirtualAddress, PhysicalAddress, Length, Flags, Virtual::MapType::TwoMB);
|
||||
VirtualAddress = (void *)((uintptr_t)VirtualAddress + PAGE_SIZE_2M);
|
||||
PhysicalAddress = (void *)((uintptr_t)PhysicalAddress + PAGE_SIZE_2M);
|
||||
Length -= PAGE_SIZE_2M;
|
||||
}
|
||||
|
||||
while (Length >= PAGE_SIZE_4K)
|
||||
{
|
||||
this->Map(VirtualAddress, PhysicalAddress, Length, Flags, Virtual::MapType::FourKB);
|
||||
VirtualAddress = (void *)((uintptr_t)VirtualAddress + PAGE_SIZE_4K);
|
||||
PhysicalAddress = (void *)((uintptr_t)PhysicalAddress + PAGE_SIZE_4K);
|
||||
Length -= PAGE_SIZE_4K;
|
||||
}
|
||||
|
||||
return Virtual::MapType::FourKB;
|
||||
}
|
||||
|
||||
Virtual::MapType Type = Virtual::MapType::FourKB;
|
||||
|
||||
if (Length >= PAGE_SIZE_1G)
|
||||
{
|
||||
Type = Virtual::MapType::OneGB;
|
||||
if (Length % PAGE_SIZE_1G != 0)
|
||||
{
|
||||
warn("Length is not a multiple of 1GB.");
|
||||
if (FailOnModulo)
|
||||
return Virtual::MapType::NoMapType;
|
||||
}
|
||||
}
|
||||
else if (Length >= PAGE_SIZE_2M)
|
||||
{
|
||||
Type = Virtual::MapType::TwoMB;
|
||||
if (Length % PAGE_SIZE_2M != 0)
|
||||
{
|
||||
warn("Length is not a multiple of 2MB.");
|
||||
if (FailOnModulo)
|
||||
return Virtual::MapType::NoMapType;
|
||||
}
|
||||
}
|
||||
|
||||
this->Map(VirtualAddress, PhysicalAddress, Length, Flags, Type);
|
||||
return Type;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Unmap page.
|
||||
*
|
||||
* @param VirtualAddress Virtual address of the page.
|
||||
* @param Type Type of the page. Check MapType enum.
|
||||
*/
|
||||
void Unmap(void *VirtualAddress, MapType Type = MapType::FourKB);
|
||||
|
||||
/**
|
||||
* @brief Unmap multiple pages.
|
||||
*
|
||||
* @param VirtualAddress First virtual address of the page.
|
||||
* @param Length Length to map.
|
||||
* @param Type Type of the page. Check MapType enum.
|
||||
*/
|
||||
__always_inline inline void Unmap(void *VirtualAddress, size_t Length, MapType Type = MapType::FourKB)
|
||||
{
|
||||
int PageSize = PAGE_SIZE_4K;
|
||||
|
||||
if (Type == MapType::TwoMB)
|
||||
PageSize = PAGE_SIZE_2M;
|
||||
else if (Type == MapType::OneGB)
|
||||
PageSize = PAGE_SIZE_1G;
|
||||
|
||||
for (uintptr_t i = 0; i < Length; i += PageSize)
|
||||
this->Unmap((void *)((uintptr_t)VirtualAddress + i), Type);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Remap page.
|
||||
*
|
||||
* @param VirtualAddress Virtual address of the page.
|
||||
* @param PhysicalAddress Physical address of the page.
|
||||
* @param Flags Flags of the page. Check PTFlag enum.
|
||||
* @param Type Type of the page. Check MapType enum.
|
||||
*/
|
||||
__always_inline inline void Remap(void *VirtualAddress, void *PhysicalAddress, uint64_t Flags, MapType Type = MapType::FourKB)
|
||||
{
|
||||
this->Unmap(VirtualAddress, Type);
|
||||
this->Map(VirtualAddress, PhysicalAddress, Flags, Type);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Construct a new Virtual object
|
||||
*
|
||||
* @param Table Page table. If null, it will use the current page table.
|
||||
*/
|
||||
Virtual(PageTable4 *Table = nullptr);
|
||||
|
||||
/**
|
||||
* @brief Destroy the Virtual object
|
||||
*
|
||||
*/
|
||||
~Virtual();
|
||||
};
|
||||
|
||||
class StackGuard
|
||||
{
|
||||
private:
|
||||
void *StackBottom = nullptr;
|
||||
void *StackTop = nullptr;
|
||||
void *StackPhyiscalBottom = nullptr;
|
||||
void *StackPhyiscalTop = nullptr;
|
||||
uint64_t Size = 0;
|
||||
bool UserMode = false;
|
||||
PageTable4 *Table = nullptr;
|
||||
|
||||
public:
|
||||
/** @brief For general info */
|
||||
void *GetStackBottom() { return StackBottom; }
|
||||
/** @brief For RSP */
|
||||
void *GetStackTop() { return StackTop; }
|
||||
/** @brief For general info */
|
||||
void *GetStackPhysicalBottom() { return StackPhyiscalBottom; }
|
||||
/** @brief For general info */
|
||||
void *GetStackPhysicalTop() { return StackPhyiscalTop; }
|
||||
/** @brief Called by exception handler */
|
||||
bool Expand(uintptr_t FaultAddress);
|
||||
/**
|
||||
* @brief Construct a new Stack Guard object
|
||||
* @param User Stack for user mode?
|
||||
*/
|
||||
StackGuard(bool User, PageTable4 *Table);
|
||||
/**
|
||||
* @brief Destroy the Stack Guard object
|
||||
*/
|
||||
~StackGuard();
|
||||
};
|
||||
|
||||
class MemMgr
|
||||
{
|
||||
public:
|
||||
struct AllocatedPages
|
||||
{
|
||||
void *Address;
|
||||
size_t PageCount;
|
||||
};
|
||||
|
||||
std::vector<AllocatedPages> GetAllocatedPagesList() { return AllocatedPagesList; }
|
||||
uint64_t GetAllocatedMemorySize();
|
||||
|
||||
bool Add(void *Address, size_t Count);
|
||||
|
||||
void *RequestPages(size_t Count, bool User = false);
|
||||
void FreePages(void *Address, size_t Count);
|
||||
|
||||
void DetachAddress(void *Address);
|
||||
|
||||
MemMgr(PageTable4 *PageTable = nullptr, VirtualFileSystem::Node *Directory = nullptr);
|
||||
~MemMgr();
|
||||
|
||||
private:
|
||||
Bitmap PageBitmap;
|
||||
PageTable4 *PageTable;
|
||||
VirtualFileSystem::Node *Directory;
|
||||
|
||||
std::vector<AllocatedPages> AllocatedPagesList;
|
||||
};
|
||||
}
|
||||
|
||||
void InitializeMemoryManagement(BootInfo *Info);
|
||||
|
||||
void *operator new(size_t Size);
|
||||
void *operator new[](size_t Size);
|
||||
void *operator new(size_t Size, std::align_val_t Alignment);
|
||||
void operator delete(void *Pointer);
|
||||
void operator delete[](void *Pointer);
|
||||
void operator delete(void *Pointer, long unsigned int Size);
|
||||
void operator delete[](void *Pointer, long unsigned int Size);
|
||||
|
||||
extern Memory::Physical KernelAllocator;
|
||||
extern Memory::PageTable4 *KernelPageTable;
|
||||
|
||||
#endif // __cplusplus
|
||||
|
||||
EXTERNC void *malloc(size_t Size);
|
||||
EXTERNC void *calloc(size_t n, size_t Size);
|
||||
EXTERNC void *realloc(void *Address, size_t Size);
|
||||
EXTERNC void free(void *Address);
|
||||
|
||||
#define kmalloc(Size) malloc(Size)
|
||||
#define kcalloc(n, Size) calloc(n, Size)
|
||||
#define krealloc(Address, Size) realloc(Address, Size)
|
||||
#define kfree(Address) free(Address)
|
||||
|
||||
#endif // !__FENNIX_KERNEL_INTERNAL_MEMORY_H__
|
||||
Reference in New Issue
Block a user