diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteMm7.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteMm7.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteMm7.c b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteMm7.c new file mode 100644 index 00000000..833f6451 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteMm7.c @@ -0,0 +1,32 @@ +/** @file + AsmWriteMm7 function + + Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + + + + +/** + Writes the current value of 64-bit MMX Register #7 (MM7). + + Writes the current value of MM7. This function is only available on IA32 and + x64. + + @param Value The 64-bit value to write to MM7. + +**/ +VOID +EFIAPI +AsmWriteMm7 ( + IN UINT64 Value + ) +{ + _asm { + movq mm7, qword ptr [Value] + emms + } +} + |