Data Structures
union	PAGE_MAP_AND_DIRECTORY_POINTER

union	PAGE_TABLE_4K_ENTRY

union	PAGE_TABLE_ENTRY

union	PAGE_TABLE_1G_ENTRY

Macros
#define	IA32_PG_P BIT0

#define	IA32_PG_RW BIT1

#define	IA32_PG_PS BIT7

#define	PAGING_PAE_INDEX_MASK 0x1FF

#define	PAGING_4K_ADDRESS_MASK_64 0x000FFFFFFFFFF000ull

#define	PAGING_2M_ADDRESS_MASK_64 0x000FFFFFFFE00000ull

#define	PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull

#define	PAGING_L1_ADDRESS_SHIFT 12

#define	PAGING_L2_ADDRESS_SHIFT 21

#define	PAGING_L3_ADDRESS_SHIFT 30

#define	PAGING_L4_ADDRESS_SHIFT 39

#define	PAGING_PML4E_NUMBER 4

#define	PAGETABLE_ENTRY_MASK ((1UL << 9) - 1)

#define	PML4_OFFSET(x) ( (x >> 39) & PAGETABLE_ENTRY_MASK)

#define	PDP_OFFSET(x) ( (x >> 30) & PAGETABLE_ENTRY_MASK)

#define	PDE_OFFSET(x) ( (x >> 21) & PAGETABLE_ENTRY_MASK)

#define	PTE_OFFSET(x) ( (x >> 12) & PAGETABLE_ENTRY_MASK)

#define	PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull

Detailed Description

x86_64 Page Tables structures

SPDX-License-Identifier: BSD-2-Clause-Patent

Code is derived from MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.h

Macro Definition Documentation

#define IA32_PG_P BIT0

#define IA32_PG_PS BIT7

#define IA32_PG_RW BIT1

#define PAGETABLE_ENTRY_MASK ((1UL << 9) - 1)

#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull

#define PAGING_2M_ADDRESS_MASK_64 0x000FFFFFFFE00000ull

#define PAGING_4K_ADDRESS_MASK_64 0x000FFFFFFFFFF000ull

#define PAGING_L1_ADDRESS_SHIFT 12

#define PAGING_L2_ADDRESS_SHIFT 21

#define PAGING_L3_ADDRESS_SHIFT 30

#define PAGING_L4_ADDRESS_SHIFT 39

#define PAGING_PAE_INDEX_MASK 0x1FF

#define PAGING_PML4E_NUMBER 4

#define PDE_OFFSET ( x ) ( (x >> 21) & PAGETABLE_ENTRY_MASK)

#define PDP_OFFSET ( x ) ( (x >> 30) & PAGETABLE_ENTRY_MASK)

#define PML4_OFFSET ( x ) ( (x >> 39) & PAGETABLE_ENTRY_MASK)

#define PTE_OFFSET ( x ) ( (x >> 12) & PAGETABLE_ENTRY_MASK)