4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/** @file
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync AsmMwait function
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync are licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync which accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync http://opensource.org/licenses/bsd-license.php.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/**
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Executes an MWAIT instruction.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Executes an MWAIT instruction with the register state specified by Eax and
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Ecx. Returns Eax. This function is only available on IA-32 and x64.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param RegisterEax The value to load into EAX or RAX before executing the MONITOR
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync instruction.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param RegisterEcx The value to load into ECX or RCX before executing the MONITOR
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync instruction.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return RegisterEax
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncUINTN
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFIAPI
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncAsmMwait (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN UINTN RegisterEax,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN UINTN RegisterEcx
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync )
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _asm {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov eax, RegisterEax
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mov ecx, RegisterEcx
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _emit 0x0f // mwait
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _emit 0x01
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync _emit 0xC9
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync