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c69dd9df | 1 | title CpuIoAccess.asm\r |
2 | \r | |
3 | ;------------------------------------------------------------------------------\r | |
4 | ;*\r | |
5 | ;* Copyright (c) 2005 - 2007, Intel Corporation \r | |
6 | ;* All rights reserved. This program and the accompanying materials \r | |
7 | ;* are licensed and made available under the terms and conditions of the BSD License \r | |
8 | ;* which accompanies this distribution. The full text of the license may be found at \r | |
9 | ;* http://opensource.org/licenses/bsd-license.php \r | |
10 | ;* \r | |
11 | ;* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
12 | ;* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
13 | ;* \r | |
14 | ;* Module Name:\r | |
15 | ;* CpuIoAccess.asm\r | |
16 | ;* \r | |
17 | ;* Abstract:\r | |
18 | ;* Supports x64 CPU IO operation\r | |
19 | ;*\r | |
20 | ;------------------------------------------------------------------------------\r | |
21 | ;\r | |
22 | ; \r | |
23 | ; \r | |
24 | ; Abstract:\r | |
25 | ; \r | |
26 | ; \r | |
27 | ;------------------------------------------------------------------------------\r | |
28 | \r | |
29 | .CODE\r | |
30 | \r | |
31 | ;------------------------------------------------------------------------------\r | |
32 | ; UINT8\r | |
33 | ; CpuIoRead8 (\r | |
34 | ; UINT16 Port // rcx\r | |
35 | ; )\r | |
36 | ;------------------------------------------------------------------------------\r | |
37 | CpuIoRead8 PROC PUBLIC\r | |
38 | xor eax, eax\r | |
39 | mov dx, cx\r | |
40 | in al, dx\r | |
41 | ret\r | |
42 | CpuIoRead8 ENDP\r | |
43 | \r | |
44 | ;------------------------------------------------------------------------------\r | |
45 | ; VOID\r | |
46 | ; CpuIoWrite8 (\r | |
47 | ; UINT16 Port, // rcx\r | |
48 | ; UINT32 Data // rdx\r | |
49 | ; )\r | |
50 | ;------------------------------------------------------------------------------\r | |
51 | CpuIoWrite8 PROC PUBLIC\r | |
52 | mov eax, edx\r | |
53 | mov dx, cx\r | |
54 | out dx, al\r | |
55 | ret\r | |
56 | CpuIoWrite8 ENDP\r | |
57 | \r | |
58 | ;------------------------------------------------------------------------------\r | |
59 | ; UINT16\r | |
60 | ; CpuIoRead16 (\r | |
61 | ; UINT16 Port // rcx\r | |
62 | ; )\r | |
63 | ;------------------------------------------------------------------------------\r | |
64 | CpuIoRead16 PROC PUBLIC\r | |
65 | xor eax, eax\r | |
66 | mov dx, cx\r | |
67 | in ax, dx\r | |
68 | ret\r | |
69 | CpuIoRead16 ENDP\r | |
70 | \r | |
71 | ;------------------------------------------------------------------------------\r | |
72 | ; VOID\r | |
73 | ; CpuIoWrite16 (\r | |
74 | ; UINT16 Port, // rcx\r | |
75 | ; UINT32 Data // rdx\r | |
76 | ; )\r | |
77 | ;------------------------------------------------------------------------------\r | |
78 | CpuIoWrite16 PROC PUBLIC\r | |
79 | mov eax, edx\r | |
80 | mov dx, cx\r | |
81 | out dx, ax\r | |
82 | ret\r | |
83 | CpuIoWrite16 ENDP\r | |
84 | \r | |
85 | ;------------------------------------------------------------------------------\r | |
86 | ; UINT32\r | |
87 | ; CpuIoRead32 (\r | |
88 | ; UINT16 Port // rcx\r | |
89 | ; )\r | |
90 | ;------------------------------------------------------------------------------\r | |
91 | CpuIoRead32 PROC PUBLIC\r | |
92 | mov dx, cx\r | |
93 | in eax, dx\r | |
94 | ret\r | |
95 | CpuIoRead32 ENDP\r | |
96 | \r | |
97 | ;------------------------------------------------------------------------------\r | |
98 | ; VOID\r | |
99 | ; CpuIoWrite32 (\r | |
100 | ; UINT16 Port, // rcx\r | |
101 | ; UINT32 Data // rdx\r | |
102 | ; )\r | |
103 | ;------------------------------------------------------------------------------\r | |
104 | CpuIoWrite32 PROC PUBLIC\r | |
105 | mov eax, edx\r | |
106 | mov dx, cx\r | |
107 | out dx, eax\r | |
108 | ret\r | |
109 | CpuIoWrite32 ENDP\r | |
110 | \r | |
111 | END\r |