mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-25 16:37:42 +01:00
34 lines
667 B
C
34 lines
667 B
C
/** @file
|
|
AsmWriteDr5 function
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
/**
|
|
Writes a value to Debug Register 5 (DR5).
|
|
|
|
Writes and returns a new value to DR5. This function is only available on
|
|
IA-32 and x64. This writes a 32-bit value on IA-32 and a 64-bit value on x64.
|
|
|
|
@param Value The value to write to Dr5.
|
|
|
|
@return The value written to Debug Register 5 (DR5).
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
AsmWriteDr5 (
|
|
IN UINTN Value
|
|
)
|
|
{
|
|
_asm {
|
|
mov eax, Value
|
|
_emit 0x0f // mov dr5, eax
|
|
_emit 0x23
|
|
_emit 0xe8
|
|
}
|
|
}
|
|
|