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audk/UefiCpuPkg/CpuDxe/X64/CpuAsm.nasm

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UefiCpuPkg CpuDxe: Add nasm source file in CpuDxe.inf Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com>
2016-06-14 09:43:44 +02:00
;------------------------------------------------------------------------------
;*
;* Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
UefiCpuPkg: Replace BSD License with BSD+Patent License https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
2019-04-04 01:07:22 +02:00
;* SPDX-License-Identifier: BSD-2-Clause-Patent
UefiCpuPkg CpuDxe: Add nasm source file in CpuDxe.inf Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com>
2016-06-14 09:43:44 +02:00
;*
;* CpuAsm.nasm
;*
;* Abstract:
;*
;------------------------------------------------------------------------------
DEFAULT REL
SECTION .text
;------------------------------------------------------------------------------
; VOID
; SetCodeSelector (
; UINT16 Selector
; );
;------------------------------------------------------------------------------
global ASM_PFX(SetCodeSelector)
ASM_PFX(SetCodeSelector):
UefiCpuPkg/CpuDxe: Fix boot error REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3084 When DXE drivers are dispatched above 4GB memory in 64bit mode, the address setCodeSelectorLongJump in stack will be override by parameter. Jump to Qword is not supported by some processors. So use "o64 retf" instead. Signed-off-by: Guo Dong <guo.dong@intel.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com> Tested-by: James Bottomley <jejb@linux.ibm.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
2021-01-07 04:10:45 +01:00
push rcx
UefiCpuPkg CpuDxe: Add nasm source file in CpuDxe.inf Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com>
2016-06-14 09:43:44 +02:00
lea rax, [setCodeSelectorLongJump]
UefiCpuPkg/CpuDxe: Fix boot error REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3084 When DXE drivers are dispatched above 4GB memory in 64bit mode, the address setCodeSelectorLongJump in stack will be override by parameter. Jump to Qword is not supported by some processors. So use "o64 retf" instead. Signed-off-by: Guo Dong <guo.dong@intel.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com> Tested-by: James Bottomley <jejb@linux.ibm.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
2021-01-07 04:10:45 +01:00
push rax
o64 retf
UefiCpuPkg CpuDxe: Add nasm source file in CpuDxe.inf Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com>
2016-06-14 09:43:44 +02:00
setCodeSelectorLongJump:
ret
;------------------------------------------------------------------------------
; VOID
; SetDataSelectors (
; UINT16 Selector
; );
;------------------------------------------------------------------------------
global ASM_PFX(SetDataSelectors)
ASM_PFX(SetDataSelectors):
o16 mov ss, cx
o16 mov ds, cx
o16 mov es, cx
o16 mov fs, cx
o16 mov gs, cx
ret