* Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
* Copyright 2005-2009, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*
* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
* Distributed under the terms of the NewOS License.
*/
#ifndef _KERNEL_ARCH_X86_PAGING_32_BIT_PAGING_H
#define _KERNEL_ARCH_X86_PAGING_32_BIT_PAGING_H
#include <SupportDefs.h>
#include <interrupts.h>
#include <kernel.h>
#define VADDR_TO_PDENT(va) (((va) / B_PAGE_SIZE) / 1024)
#define VADDR_TO_PTENT(va) (((va) / B_PAGE_SIZE) % 1024)
#define X86_PDE_PRESENT 0x00000001
#define X86_PDE_WRITABLE 0x00000002
#define X86_PDE_USER 0x00000004
#define X86_PDE_WRITE_THROUGH 0x00000008
#define X86_PDE_CACHING_DISABLED 0x00000010
#define X86_PDE_ACCESSED 0x00000020
#define X86_PDE_IGNORED1 0x00000040
#define X86_PDE_RESERVED1 0x00000080
#define X86_PDE_IGNORED2 0x00000100
#define X86_PDE_IGNORED3 0x00000200
#define X86_PDE_IGNORED4 0x00000400
#define X86_PDE_IGNORED5 0x00000800
#define X86_PDE_ADDRESS_MASK 0xfffff000
#define X86_PTE_PRESENT 0x00000001
#define X86_PTE_WRITABLE 0x00000002
#define X86_PTE_USER 0x00000004
#define X86_PTE_WRITE_THROUGH 0x00000008
#define X86_PTE_CACHING_DISABLED 0x00000010
#define X86_PTE_ACCESSED 0x00000020
#define X86_PTE_DIRTY 0x00000040
#define X86_PTE_PAT 0x00000080
#define X86_PTE_GLOBAL 0x00000100
#define X86_PTE_IGNORED1 0x00000200
#define X86_PTE_IGNORED2 0x00000400
#define X86_PTE_IGNORED3 0x00000800
#define X86_PTE_ADDRESS_MASK 0xfffff000
#define X86_PTE_PROTECTION_MASK (X86_PTE_WRITABLE | X86_PTE_USER)
#define X86_PTE_MEMORY_TYPE_MASK (X86_PTE_WRITE_THROUGH \
| X86_PTE_CACHING_DISABLED)
#define FIRST_USER_PGDIR_ENT (VADDR_TO_PDENT(USER_BASE))
#define NUM_USER_PGDIR_ENTS (VADDR_TO_PDENT(ROUNDUP(USER_SIZE, \
B_PAGE_SIZE * 1024)))
#define FIRST_KERNEL_PGDIR_ENT (VADDR_TO_PDENT(KERNEL_BASE))
#define NUM_KERNEL_PGDIR_ENTS (VADDR_TO_PDENT(KERNEL_SIZE))
static const size_t kPageTableAlignment = 1024 * B_PAGE_SIZE;
typedef uint32 page_table_entry;
typedef uint32 page_directory_entry;
#endif
