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| /** @file
| AsmReadCr4 function
|
| Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
| SPDX-License-Identifier: BSD-2-Clause-Patent
|
| **/
|
|
|
|
| /**
| Reads the current value of the Control Register 4 (CR4).
|
| Reads and returns the current value of CR4. This function is only available
| on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on
| x64.
|
| @return The value of the Control Register 4 (CR4).
|
| **/
| UINTN
| EFIAPI
| AsmReadCr4 (
| VOID
| )
| {
| __asm {
| _emit 0x0f // mov eax, cr4
| _emit 0x20
| _emit 0xE0
| }
| }
|
|
|
