CloverBootloader/MdePkg/Library/BaseLib/Ia32/ReadMm0.c
2019-09-03 12:58:42 +03:00

37 lines
554 B
C

/** @file
AsmReadMm0 function
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
/**
Reads the current value of 64-bit MMX Register #0 (MM0).
Reads and returns the current value of MM0. This function is only available
on IA-32 and x64.
@return The current value of MM0.
**/
UINT64
EFIAPI
AsmReadMm0 (
VOID
)
{
_asm {
push eax
push eax
movq [esp], mm0
pop eax
pop edx
emms
}
}