/* Copyright (C) 2021,2022 fef <owo@fef.moe>.  All rights reserved. */

#pragma once
#ifndef _ARCH_VMPARAM_H_
#error "This file is not meant to be included directly, use <arch/vmparam.h>"
#endif

/** @brief Userland memory region */
#define USER_OFFSET		0x0000000000000000 /* +0 TB */
#define USER_LENGTH		0x0000800000000000 /* 128 TB */

/** @brief Recursive Page Map Level 4 map */
#define X86_PMAP_OFFSET		0xffff800000000000 /* -128 TB */
#define X86_PMAP_LENGTH		0x0000004020101000 /* ~ 256.5 GB */

/** @brief Direct (contiguous) mapping of physical memory */
#define DMAP_OFFSET		0xfffff80000000000 /* -8 TB */
#define DMAP_LENGTH		0x0000040000000000 /* 4 TB */

/** @brief Kernel region (image, heap, etc) */
#define KERN_OFFSET		0xfffffe0000000000 /* -2 TB */
#define KERN_LENGTH		0x0000020000000000 /* 2 TB */

/** @brief Where the kernel image is actually mapped to */
#define KERNBASE		0xffffffff80000000 /* -2 GB */
#define KERNBASE_LENGTH		0x0000000080000000

#define VM_PAGE_ARRAY_OFFSET	KERN_OFFSET
#define VM_PAGE_ARRAY_LENGTH	(KERN_OFFSET - KERNBASE)