Files
system76-edk2/MdePkg/Library/BaseLib/Ia32/DisableCache.c
Michael Kubacki 2f88bd3a12 MdePkg: Apply uncrustify changes
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the MdePkg package

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2021-12-07 17:24:28 +00:00

30 lines
592 B
C

/** @file
AsmDisableCache function
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
/**
Set CD bit and clear NW bit of CR0 followed by a WBINVD.
Disables the caches by setting the CD bit of CR0 to 1, clearing the NW bit of CR0 to 0,
and executing a WBINVD instruction. This function is only available on IA-32 and x64.
**/
VOID
EFIAPI
AsmDisableCache (
VOID
)
{
_asm {
mov eax, cr0
bts eax, 30
btr eax, 29
mov cr0, eax
wbinvd
}
}