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Last change
on this file since 58466 was 58466, checked in by vboxsync, 9 years ago |
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EFI/Firmware: Merged in the svn:eol-style, svn:mime-type and trailing whitespace cleanup that was done after the initial UDK2014.SP1 import: svn merge /vendor/edk2/UDK2014.SP1 /vendor/edk2/current .
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Property svn:eol-style
set to
native
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File size:
1.7 KB
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| 1 | # TITLE CpuAsm.S:
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| 2 |
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| 3 | #------------------------------------------------------------------------------
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| 4 | #*
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| 5 | #* Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
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| 6 | #* This program and the accompanying materials
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| 7 | #* are licensed and made available under the terms and conditions of the BSD License
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| 8 | #* which accompanies this distribution. The full text of the license may be found at
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| 9 | #* http://opensource.org/licenses/bsd-license.php
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| 10 | #*
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| 11 | #* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 12 | #* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 13 | #*
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| 14 | #* CpuAsm.S
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| 15 | #*
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| 16 | #* Abstract:
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| 17 | #*
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| 18 | #------------------------------------------------------------------------------
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| 19 |
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| 20 |
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| 21 | #text SEGMENT
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| 22 |
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| 23 |
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| 24 | #------------------------------------------------------------------------------
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| 25 | # VOID
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| 26 | # SetCodeSelector (
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| 27 | # UINT16 Selector
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| 28 | # );
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| 29 | #------------------------------------------------------------------------------
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| 30 | ASM_GLOBAL ASM_PFX(SetCodeSelector)
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| 31 | ASM_PFX(SetCodeSelector):
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| 32 | subq $0x10, %rsp
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| 33 | leaq L_setCodeSelectorLongJump(%rip), %rax
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| 34 | movq %rax, (%rsp)
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| 35 | movw %cx, 4(%rsp)
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| 36 | .byte 0xFF, 0x2C, 0x24 # jmp (%rsp) note:fword jmp
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| 37 | L_setCodeSelectorLongJump:
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| 38 | addq $0x10, %rsp
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| 39 | ret
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| 40 |
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| 41 | #------------------------------------------------------------------------------
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| 42 | # VOID
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| 43 | # SetDataSelectors (
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| 44 | # UINT16 Selector
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| 45 | # );
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| 46 | #------------------------------------------------------------------------------
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| 47 | ASM_GLOBAL ASM_PFX(SetDataSelectors)
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| 48 | ASM_PFX(SetDataSelectors):
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| 49 | movw %cx, %ss
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| 50 | movw %cx, %ds
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| 51 | movw %cx, %es
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| 52 | movw %cx, %fs
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| 53 | movw %cx, %gs
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| 54 | ret
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| 55 |
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| 56 | #text ENDS
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| 57 |
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| 58 | #END
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| 59 |
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| 60 |
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