[mirror_edk2.git] / DuetPkg / DxeIpl / Ia32 / CpuIoAccess.asm

  title   CpuIoAccess.asm\r
;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006, 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
  .686\r
  .MODEL FLAT,C\r
  .CODE\r
\r
\r
UINT8    TYPEDEF    BYTE\r
UINT16   TYPEDEF    WORD\r
UINT32   TYPEDEF    DWORD\r
UINT64   TYPEDEF    QWORD\r
UINTN    TYPEDEF    UINT32\r
\r
\r
\r
;------------------------------------------------------------------------------\r
;  UINT8\r
;  CpuIoRead8 (\r
;    IN  UINT16  Port\r
;    )\r
;------------------------------------------------------------------------------\r
CpuIoRead8 PROC  PUBLIC Port:UINT16\r
    mov    dx,  Port\r
    in     al,  dx\r
    ret\r
CpuIoRead8  ENDP\r
\r
\r
;------------------------------------------------------------------------------\r
;  VOID\r
;  CpuIoWrite8 (\r
;    IN  UINT16  Port,\r
;    IN  UINT32  Data\r
;    )\r
;------------------------------------------------------------------------------\r
CpuIoWrite8 PROC    PUBLIC Port:UINT16, Data:UINT32\r
    mov    eax, Data\r
    mov    dx,  Port\r
    out    dx,  al\r
    ret\r
CpuIoWrite8  ENDP\r
\r
\r
END
Commit	Line	Data
ca162103	1	title CpuIoAccess.asm\r
	2	;------------------------------------------------------------------------------\r
	3	;\r
	4	; Copyright (c) 2006, 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	.686\r
	22	.MODEL FLAT,C\r
	23	.CODE\r
	24	\r
	25	\r
	26	UINT8 TYPEDEF BYTE\r
	27	UINT16 TYPEDEF WORD\r
	28	UINT32 TYPEDEF DWORD\r
	29	UINT64 TYPEDEF QWORD\r
	30	UINTN TYPEDEF UINT32\r
	31	\r
	32	\r
	33	\r
	34	;------------------------------------------------------------------------------\r
	35	; UINT8\r
	36	; CpuIoRead8 (\r
	37	; IN UINT16 Port\r
	38	; )\r
	39	;------------------------------------------------------------------------------\r
	40	CpuIoRead8 PROC PUBLIC Port:UINT16\r
	41	mov dx, Port\r
	42	in al, dx\r
	43	ret\r
	44	CpuIoRead8 ENDP\r
	45	\r
	46	\r
	47	;------------------------------------------------------------------------------\r
	48	; VOID\r
	49	; CpuIoWrite8 (\r
	50	; IN UINT16 Port,\r
	51	; IN UINT32 Data\r
	52	; )\r
	53	;------------------------------------------------------------------------------\r
	54	CpuIoWrite8 PROC PUBLIC Port:UINT16, Data:UINT32\r
	55	mov eax, Data\r
	56	mov dx, Port\r
	57	out dx, al\r
	58	ret\r
	59	CpuIoWrite8 ENDP\r
	60	\r
	61	\r
	62	END