[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / ReadCr3.c

/** @file\r
  AsmReadCr3 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
\r
\r
/**\r
  Reads the current value of the Control Register 3 (CR3).\r
\r
  Reads and returns the current value of CR3. This function is only available\r
  on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on\r
  x64.\r
\r
  @return The value of the Control Register 3 (CR3).\r
\r
**/\r
UINTN\r
EFIAPI\r
AsmReadCr3 (\r
  VOID\r
  )\r
{\r
  __asm {\r
    mov     eax, cr3\r
  }\r
}\r
\r
Commit	Line	Data
e1f414b6	1	/** @file\r
	2	AsmReadCr3 function\r
	3	\r
bb817c56	4	Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
9344f092	5	SPDX-License-Identifier: BSD-2-Clause-Patent\r
e1f414b6	6	\r
	7	**/\r
	8	\r
1efcc4ae	9	\r
f734a10a	10	\r
e1f414b6	11	\r
42eedea9	12	/**\r
	13	Reads the current value of the Control Register 3 (CR3).\r
	14	\r
	15	Reads and returns the current value of CR3. This function is only available\r
030cd1a2	16	on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on\r
030cd1a2	17	x64.\r
42eedea9	18	\r
	19	@return The value of the Control Register 3 (CR3).\r
	20	\r
	21	**/\r
e1f414b6	22	UINTN\r
	23	EFIAPI\r
	24	AsmReadCr3 (\r
	25	VOID\r
	26	)\r
	27	{\r
	28	__asm {\r
	29	mov eax, cr3\r
	30	}\r
	31	}\r
	32	\r