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# TITLE CpuAsm.S:
#------------------------------------------------------------------------------
#*
#* Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
#* This program and the accompanying materials
#* are licensed and made available under the terms and conditions of the BSD License
#* which accompanies this distribution. The full text of the license may be found at
#* http://opensource.org/licenses/bsd-license.php
#*
#* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
#* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#*
#* CpuAsm.S
#*
#* Abstract:
#*
#------------------------------------------------------------------------------
#text SEGMENT
#------------------------------------------------------------------------------
# VOID
# SetCodeSelector (
# UINT16 Selector
# );
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(SetCodeSelector)
ASM_PFX(SetCodeSelector):
subq $0x10, %rsp
leaq L_setCodeSelectorLongJump(%rip), %rax
movq %rax, (%rsp)
movw %cx, 4(%rsp)
.byte 0xFF, 0x2C, 0x24 # jmp (%rsp) note:fword jmp
L_setCodeSelectorLongJump:
addq $0x10, %rsp
ret
#------------------------------------------------------------------------------
# VOID
# SetDataSelectors (
# UINT16 Selector
# );
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(SetDataSelectors)
ASM_PFX(SetDataSelectors):
movw %cx, %ss
movw %cx, %ds
movw %cx, %es
movw %cx, %fs
movw %cx, %gs
ret
#text ENDS
#END
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