2f88bd3a12
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>
38 lines
883 B
C
38 lines
883 B
C
/** @file
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AsmMwait function
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Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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/**
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Executes an MWAIT instruction.
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Executes an MWAIT instruction with the register state specified by Eax and
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Ecx. Returns Eax. This function is only available on IA-32 and x64.
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@param RegisterEax The value to load into EAX or RAX before executing the MONITOR
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instruction.
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@param RegisterEcx The value to load into ECX or RCX before executing the MONITOR
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instruction.
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@return RegisterEax
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**/
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UINTN
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EFIAPI
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AsmMwait (
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IN UINTN RegisterEax,
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IN UINTN RegisterEcx
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)
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{
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_asm {
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mov eax, RegisterEax
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mov ecx, RegisterEcx
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_emit 0x0f // mwait
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_emit 0x01
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_emit 0xC9
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}
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}
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