Source code of Windows XP (NT5)
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

151 lines
3.5 KiB

#ifndef _KDEXTS_AMD64_H_
#define _KDEXTS_AMD64_H_
/*++
Copyright (c) 1999 Microsoft Corporation
Module Name:
amd64.h
Abstract:
This file contains definitions which are specific to amd64 platforms.
Author:
Forrest Foltz (forrestf)
Environment:
User Mode.
Revision History:
--*/
//
// MM constants.
//
#define PXE_BASE_AMD64 0xFFFFF6FB7DBED000UI64
#define PPE_BASE_AMD64 0xFFFFF6FB7DA00000UI64
#define PDE_BASE_AMD64 0xFFFFF6FB40000000UI64
#define PTE_BASE_AMD64 0xFFFFF68000000000UI64
#define PXE_TOP_AMD64 0xFFFFF6FB7DBEDFFFUI64
#define PPE_TOP_AMD64 0xFFFFF6FB7DBFFFFFUI64
#define PDE_TOP_AMD64 0xFFFFF6FB7FFFFFFFUI64
#define PTE_TOP_AMD64 0xFFFFF6FFFFFFFFFFUI64
#define MM_SESSION_SPACE_DEFAULT_AMD64 0xFFFFF90000000000UI64
//
// Each of the four levels of an AMD64 machine decode 9 bits of address space.
//
#define TABLE_DECODE_BITS_AMD64 9
//
// Standard page is 4K, or 12 bits
//
#define PAGE_SHIFT_AMD64 12
#define PAGE_MASK_AMD64 (((ULONG64)1 << PAGE_SHIFT_AMD64) - 1)
//
// Large page is 2GB, or 21 bits
//
#define LARGE_PAGE_SHIFT_AMD64 21
#define LARGE_PAGE_MASK_AMD64 (((ULONG64)1 << LARGE_PAGE_SHIFT_AMD64) - 1)
//
// Number of bits required to shift a VA in order to right-justify the
// decode bits associated with a particular level of mapping.
//
#define PTI_SHIFT_AMD64 (PAGE_SHIFT_AMD64 + TABLE_DECODE_BITS_AMD64 * 0)
#define PDI_SHIFT_AMD64 (PAGE_SHIFT_AMD64 + TABLE_DECODE_BITS_AMD64 * 1)
#define PPI_SHIFT_AMD64 (PAGE_SHIFT_AMD64 + TABLE_DECODE_BITS_AMD64 * 2)
#define PXI_SHIFT_AMD64 (PAGE_SHIFT_AMD64 + TABLE_DECODE_BITS_AMD64 * 3)
#define PTE_SHIFT_AMD64 3
//
// The AMD64 architecture can decode up to 52 bits of physical address
// space. The following masks are used to isolate those bits within a PTE
// associated with a physical address.
//
#define PTE_PHYSICAL_BITS_AMD64 ((((ULONG64)1 << 52) - 1) & ~PAGE_MASK_AMD64)
#define PTE_LARGE_PHYSICAL_BITS_AMD64 ((((ULONG64)1 << 52) - 1) & ~LARGE_PAGE_MASK_AMD64)
//
// The AMD64 architecture supports 48 bits of VA.
//
#define AMD64_VA_BITS 48
#define AMD64_VA_HIGH_BIT ((ULONG64)1 << (AMD64_VA_BITS - 1))
#define AMD64_VA_MASK (((ULONG64)1 << AMD64_VA_BITS) - 1)
#define AMD64_VA_SHIFT (63 - 47) // address sign extend shift count
//
// Inline used to sign extend a 48-bit value
//
ULONG64
__inline
VA_SIGN_EXTEND_AMD64 (
IN ULONG64 Va
)
{
if ((Va & AMD64_VA_HIGH_BIT) != 0) {
//
// The highest VA bit is set, so sign-extend it
//
Va |= ((ULONG64)-1 ^ AMD64_VA_MASK);
}
return Va;
}
//
// Flags in a HARDWARE_PTE
//
#define MM_PTE_VALID_MASK_AMD64 0x1
#if defined(NT_UP)
#define MM_PTE_WRITE_MASK_AMD64 0x2
#else
#define MM_PTE_WRITE_MASK_AMD64 0x800
#endif
#define MM_PTE_OWNER_MASK_AMD64 0x4
#define MM_PTE_WRITE_THROUGH_MASK_AMD64 0x8
#define MM_PTE_CACHE_DISABLE_MASK_AMD64 0x10
#define MM_PTE_ACCESS_MASK_AMD64 0x20
#if defined(NT_UP)
#define MM_PTE_DIRTY_MASK_AMD64 0x40
#else
#define MM_PTE_DIRTY_MASK_AMD64 0x42
#endif
#define MM_PTE_LARGE_PAGE_MASK_AMD64 0x80
#define MM_PTE_GLOBAL_MASK_AMD64 0x100
#define MM_PTE_COPY_ON_WRITE_MASK_AMD64 0x200
#define MM_PTE_PROTOTYPE_MASK_AMD64 0x400
#define MM_PTE_TRANSITION_MASK_AMD64 0x800
#define MM_PTE_PROTECTION_MASK_AMD64 0x3e0
#define MM_PTE_PAGEFILE_MASK_AMD64 0x01e
#define MI_PTE_LOOKUP_NEEDED_AMD64 (0xFFFFFFFF)
#endif // _KDEXTS_AMD64_H_