diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteCr2.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteCr2.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteCr2.c b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteCr2.c new file mode 100644 index 00000000..89e8fd36 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/Ia32/WriteCr2.c @@ -0,0 +1,31 @@ +/** @file + AsmWriteCr2 function + + Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +/** + Writes a value to Control Register 2 (CR2). + + Writes and returns a new value to CR2. 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 CR2. + + @return The value written to CR2. + +**/ +UINTN +EFIAPI +AsmWriteCr2 ( + UINTN Value + ) +{ + _asm { + mov eax, Value + mov cr2, eax + } +} + |