[mirror_edk2.git] / DuetPkg / DxeIpl / X64 / CpuIoAccess.asm

  title   CpuIoAccess.asm\r
;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006 - 2007, Intel Corporation                                                         \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
; Module Name:\r
;   CpuIoAccess.asm\r
; \r
; Abstract:\r
;   CPU IO Abstraction\r
;\r
;------------------------------------------------------------------------------\r
\r
\r
.code\r
\r
;------------------------------------------------------------------------------\r
;  UINT8\r
;  CpuIoRead8 (\r
;    UINT16  Port   // rcx\r
;    )\r
;------------------------------------------------------------------------------\r
CpuIoRead8 PROC        PUBLIC\r
    xor   eax, eax\r
    mov    dx, cx\r
    in     al, dx\r
    ret\r
CpuIoRead8  ENDP\r
\r
;------------------------------------------------------------------------------\r
;  VOID\r
;  CpuIoWrite8 (\r
;    UINT16  Port,    // rcx\r
;    UINT32  Data     // rdx\r
;    )\r
;------------------------------------------------------------------------------\r
CpuIoWrite8 PROC        PUBLIC\r
	  mov   eax, edx\r
    mov    dx, cx\r
    out    dx, al\r
    ret\r
CpuIoWrite8  ENDP\r
\r
\r
END\r
Commit	Line	Data
ca162103	1	title CpuIoAccess.asm\r
	2	;------------------------------------------------------------------------------\r
	3	;\r
	4	; Copyright (c) 2006 - 2007, Intel Corporation \r
	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	; Module Name:\r
	14	; CpuIoAccess.asm\r
	15	; \r
	16	; Abstract:\r
	17	; CPU IO Abstraction\r
	18	;\r
	19	;------------------------------------------------------------------------------\r
	20	\r
	21	\r
	22	.code\r
	23	\r
	24	;------------------------------------------------------------------------------\r
	25	; UINT8\r
	26	; CpuIoRead8 (\r
	27	; UINT16 Port // rcx\r
	28	; )\r
	29	;------------------------------------------------------------------------------\r
	30	CpuIoRead8 PROC PUBLIC\r
	31	xor eax, eax\r
	32	mov dx, cx\r
	33	in al, dx\r
	34	ret\r
	35	CpuIoRead8 ENDP\r
	36	\r
	37	;------------------------------------------------------------------------------\r
	38	; VOID\r
	39	; CpuIoWrite8 (\r
	40	; UINT16 Port, // rcx\r
	41	; UINT32 Data // rdx\r
	42	; )\r
	43	;------------------------------------------------------------------------------\r
	44	CpuIoWrite8 PROC PUBLIC\r
	45	mov eax, edx\r
	46	mov dx, cx\r
	47	out dx, al\r
	48	ret\r
	49	CpuIoWrite8 ENDP\r
	50	\r
	51	\r
	52	END\r