| | 1 | # TITLE CpuAsm.S: \r |
| | 2 | \r |
| | 3 | #------------------------------------------------------------------------------\r |
| | 4 | #*\r |
| | 5 | #* Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>\r |
| | 6 | #* 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 | #* CpuAsm.S\r |
| | 15 | #*\r |
| | 16 | #* Abstract:\r |
| | 17 | #*\r |
| | 18 | #------------------------------------------------------------------------------\r |
| | 19 | \r |
| | 20 | \r |
| | 21 | #text SEGMENT\r |
| | 22 | \r |
| | 23 | \r |
| | 24 | #------------------------------------------------------------------------------\r |
| | 25 | # VOID\r |
| | 26 | # SetCodeSelector (\r |
| | 27 | # UINT16 Selector\r |
| | 28 | # );\r |
| | 29 | #------------------------------------------------------------------------------\r |
| | 30 | ASM_GLOBAL ASM_PFX(SetCodeSelector)\r |
| | 31 | ASM_PFX(SetCodeSelector):\r |
| | 32 | subq $0x10, %rsp \r |
| | 33 | leaq L_setCodeSelectorLongJump(%rip), %rax \r |
| | 34 | movq %rax, (%rsp) \r |
| | 35 | movw %cx, 4(%rsp)\r |
| | 36 | .byte 0xFF, 0x2C, 0x24 # jmp (%rsp) note:fword jmp\r |
| | 37 | L_setCodeSelectorLongJump:\r |
| | 38 | addq $0x10, %rsp\r |
| | 39 | ret\r |
| | 40 | \r |
| | 41 | #------------------------------------------------------------------------------\r |
| | 42 | # VOID\r |
| | 43 | # SetDataSelectors (\r |
| | 44 | # UINT16 Selector\r |
| | 45 | # );\r |
| | 46 | #------------------------------------------------------------------------------\r |
| | 47 | ASM_GLOBAL ASM_PFX(SetDataSelectors)\r |
| | 48 | ASM_PFX(SetDataSelectors):\r |
| | 49 | movw %cx, %ss\r |
| | 50 | movw %cx, %ds\r |
| | 51 | movw %cx, %es\r |
| | 52 | movw %cx, %fs\r |
| | 53 | movw %cx, %gs\r |
| | 54 | ret\r |
| | 55 | \r |
| | 56 | #text ENDS\r |
| | 57 | \r |
| | 58 | #END\r |
| | 59 | \r |
| | 60 | \r |
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