[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / ReadDr7.c

/** @file\r
  AsmReadDr7 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
  Reads the current value of Debug Register 7 (DR7).\r
\r
  Reads and returns the current value of DR7. 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 Debug Register 7 (DR7).\r
\r
**/\r
UINTN\r
EFIAPI\r
AsmReadDr7 (\r
  VOID\r
  )\r
{\r
  __asm {\r
    mov     eax, dr7\r
  }\r
}\r
Commit	Line	Data
e1f414b6	1	/** @file\r
	2	AsmReadDr7 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
42eedea9	9	/**\r
	10	Reads the current value of Debug Register 7 (DR7).\r
	11	\r
	12	Reads and returns the current value of DR7. This function is only available\r
030cd1a2	13	on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on\r
030cd1a2	14	x64.\r
42eedea9	15	\r
	16	@return The value of Debug Register 7 (DR7).\r
	17	\r
	18	**/\r
e1f414b6	19	UINTN\r
	20	EFIAPI\r
	21	AsmReadDr7 (\r
	22	VOID\r
	23	)\r
	24	{\r
	25	__asm {\r
	26	mov eax, dr7\r
	27	}\r
	28	}\r