[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / Mwait.c

/** @file\r
  AsmMwait function\r
\r
  Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
UINTN\r
EFIAPI\r
AsmMwait (\r
  IN      UINTN                     RegisterEax,\r
  IN      UINTN                     RegisterEcx\r
  )\r
{\r
  _asm {\r
    mov     eax, RegisterEax\r
    mov     ecx, RegisterEcx\r
    _emit   0x0f              // mwait\r
    _emit   0x01\r
    _emit   0xC9\r
  }\r
}\r
\r
Commit	Line	Data
23086ba8	1	/** @file\r
	2	AsmMwait function\r
	3	\r
e5f461a8	4	Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
23086ba8	5	All rights reserved. This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
23086ba8	15	UINTN\r
	16	EFIAPI\r
	17	AsmMwait (\r
	18	IN UINTN RegisterEax,\r
	19	IN UINTN RegisterEcx\r
	20	)\r
	21	{\r
	22	_asm {\r
	23	mov eax, RegisterEax\r
	24	mov ecx, RegisterEcx\r
	25	_emit 0x0f // mwait\r
	26	_emit 0x01\r
	27	_emit 0xC9\r
	28	}\r
	29	}\r
	30	\r