projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ff428c | 1 | #------------------------------------------------------------------------------\r |
| 2 | #\r | |
| bb817c56 HT |
3 | # Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r |
| 4 | # This program and the accompanying materials\r | |
| b1ff428c | 5 | # are licensed and made available under the terms and conditions of the BSD License\r |
| 6 | # which accompanies this distribution. The full text of the license may be found at\r | |
| 7 | # http://opensource.org/licenses/bsd-license.php\r | |
| 8 | #\r | |
| 9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 11 | #\r | |
| 12 | # Module Name:\r | |
| 13 | #\r | |
| 14 | # WriteMsr64.S\r | |
| 15 | #\r | |
| 16 | # Abstract:\r | |
| 17 | #\r | |
| 18 | # AsmWriteMsr64 function\r | |
| 19 | #\r | |
| 20 | # Notes:\r | |
| 21 | #\r | |
| 22 | #------------------------------------------------------------------------------\r | |
| 23 | \r | |
| 24 | \r | |
| 25 | #------------------------------------------------------------------------------\r | |
| 26 | # UINT64\r | |
| 27 | # EFIAPI\r | |
| 28 | # AsmWriteMsr64 (\r | |
| 29 | # IN UINT32 Index,\r | |
| 30 | # IN UINT64 Value\r | |
| 31 | # );\r | |
| 32 | #------------------------------------------------------------------------------\r | |
| d5172f91 | 33 | ASM_GLOBAL ASM_PFX(AsmWriteMsr64)\r |
| b1ff428c | 34 | ASM_PFX(AsmWriteMsr64):\r |
| 6f890d5b | 35 | mov %rdx, %rax # meanwhile, rax <- return value\r |
| b1ff428c | 36 | shr $0x20, %rdx # edx:eax contains the value to write\r |
| 37 | wrmsr\r | |
| 38 | ret\r |