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https://github.com/Fennix-Project/Kernel.git
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75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
/*
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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_MEMORY_MACROS_H__
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#define __FENNIX_KERNEL_MEMORY_MACROS_H__
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#include <types.h>
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// kilobyte
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#define TO_KiB(d) ((d) / 1024)
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// megabyte
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#define TO_MiB(d) ((d) / 1024 / 1024)
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// gigabyte
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#define TO_GiB(d) ((d) / 1024 / 1024 / 1024)
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// terabyte
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#define TO_TiB(d) ((d) / 1024 / 1024 / 1024 / 1024)
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// petabyte
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#define TO_PiB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024)
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// exobyte
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#define TO_EiB(d) ((d) / 1024 / 1024 / 1024 / 1024 / 1024 / 1024)
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#define PAGE_SIZE 0x1000 /* 4 KiB */
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#define PAGE_SIZE_4K PAGE_SIZE /* 4 KiB */
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#define PAGE_SIZE_2M 0x200000 /* 2 MiB */
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#define PAGE_SIZE_4M 0x400000 /* 4 MiB */
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#define PAGE_SIZE_1G 0x40000000 /* 1 GiB */
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#define STACK_SIZE 0x4000 /* 16 KiB */
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#define USER_STACK_SIZE 0x2000 /* 8 KiB */
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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 KERNEL_VMA_OFFSET 0xFFFFFFFF80000000
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#define USER_ALLOC_BASE 0xFFFFA00000000000 /* 256 GiB */
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#define USER_ALLOC_END 0xFFFFB00000000000
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#define KERNEL_STACK_BASE 0xFFFFB00000000000 /* 256 GiB */
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#define KERNEL_STACK_END 0xFFFFC00000000000
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#define USER_STACK_END 0xFFFFEFFF00000000 /* 256 MiB */
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#define USER_STACK_BASE 0xFFFFEFFFFFFF0000
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#elif defined(a32)
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#define KERNEL_VMA_OFFSET 0xC0000000
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#define USER_ALLOC_BASE 0x80000000
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#define USER_ALLOC_END 0xA0000000
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#define KERNEL_STACK_BASE 0xA0000000
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#define KERNEL_STACK_END 0xB0000000
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#define USER_STACK_BASE 0xEFFFFFFF
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#define USER_STACK_END 0xE0000000
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#endif
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#endif // !__FENNIX_KERNEL_MEMORY_MACROS_H__
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