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c2fd60f0 | 1 | # TITLE CpuAsm.S: \r |
2 | \r | |
3 | #------------------------------------------------------------------------------\r | |
4 | #*\r | |
e41aad15 | 5 | #* Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>\r |
01a1c0fc | 6 | #* This program and the accompanying materials\r |
c2fd60f0 | 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 | |
c2fd60f0 | 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 | |
4d0ceb8d | 33 | leaq L_setCodeSelectorLongJump(%rip), %rax \r |
c2fd60f0 | 34 | movq %rax, (%rsp) \r |
35 | movw %cx, 4(%rsp)\r | |
36 | .byte 0xFF, 0x2C, 0x24 # jmp (%rsp) note:fword jmp\r | |
4d0ceb8d | 37 | L_setCodeSelectorLongJump:\r |
c2fd60f0 | 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 | |
c2fd60f0 | 56 | #text ENDS\r |
57 | \r | |
58 | #END\r | |
59 | \r | |
60 | \r |