[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / WriteDr3.c

/** @file\r
  AsmWriteDr3 function\r
\r
  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
/**\r
  Writes a value to Debug Register 3 (DR3).\r
\r
  Writes and returns a new value to DR3. This function is only available on\r
  IA-32 and x64. This writes a 32-bit value on IA-32 and a 64-bit value on x64.\r
\r
  @param  Value The value to write to Dr3.\r
\r
  @return The value written to Debug Register 3 (DR3).\r
\r
**/\r
UINTN\r
EFIAPI\r
AsmWriteDr3 (\r
  IN UINTN  Value\r
  )\r
{\r
  _asm {\r
    mov     eax, Value\r
    mov     dr3, eax\r
  }\r
}\r
Commit	Line	Data
	1	/** @file\r
	2	AsmWriteDr3 function\r
	3	\r
	4	Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
	5	SPDX-License-Identifier: BSD-2-Clause-Patent\r
	6	\r
	7	**/\r
	8	\r
	9	/**\r
	10	Writes a value to Debug Register 3 (DR3).\r
	11	\r
	12	Writes and returns a new value to DR3. This function is only available on\r
	13	IA-32 and x64. This writes a 32-bit value on IA-32 and a 64-bit value on x64.\r
	14	\r
	15	@param Value The value to write to Dr3.\r
	16	\r
	17	@return The value written to Debug Register 3 (DR3).\r
	18	\r
	19	**/\r
	20	UINTN\r
	21	EFIAPI\r
	22	AsmWriteDr3 (\r
	23	IN UINTN Value\r
	24	)\r
	25	{\r
	26	_asm {\r
	27	mov eax, Value\r
	28	mov dr3, eax\r
	29	}\r
	30	}\r