| 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 |
projects / mirror_edk2.git / blame