tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
audk/IntelFsp2Pkg/Library/BaseFspSwitchStackLib/Ia32/Stack.nasm

69 lines
1.7 KiB
NASM
Raw Normal View History

IntelFsp2Pkg BaseFspSwitchStackLib: Convert Ia32/Stack.asm to NASM The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert Ia32/Stack.asm to Ia32/Stack.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com>
2016-06-08 11:00:25 +02:00
;------------------------------------------------------------------------------
;
; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
IntelFsp2Pkg: 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: Chasel Chiu <chasel.chiu@intel.com>
2019-04-04 01:04:04 +02:00
; SPDX-License-Identifier: BSD-2-Clause-Patent
IntelFsp2Pkg BaseFspSwitchStackLib: Convert Ia32/Stack.asm to NASM The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert Ia32/Stack.asm to Ia32/Stack.nasm Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com>
2016-06-08 11:00:25 +02:00
;
; Abstract:
;
; Switch the stack from temporary memory to permenent memory.
;
;------------------------------------------------------------------------------
SECTION .text
extern ASM_PFX(SwapStack)
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; Pei2LoaderSwitchStack (
; VOID
; )
;------------------------------------------------------------------------------
global ASM_PFX(Pei2LoaderSwitchStack)
ASM_PFX(Pei2LoaderSwitchStack):
xor eax, eax
jmp ASM_PFX(FspSwitchStack)
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; Loader2PeiSwitchStack (
; VOID
; )
;------------------------------------------------------------------------------
global ASM_PFX(Loader2PeiSwitchStack)
ASM_PFX(Loader2PeiSwitchStack):
jmp ASM_PFX(FspSwitchStack)
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; FspSwitchStack (
; VOID
; )
;------------------------------------------------------------------------------
global ASM_PFX(FspSwitchStack)
ASM_PFX(FspSwitchStack):
; Save current contexts
push eax
pushfd
cli
pushad
sub esp, 8
sidt [esp]
; Load new stack
push esp
call ASM_PFX(SwapStack)
mov esp, eax
; Restore previous contexts
lidt [esp]
add esp, 8
popad
popfd
add esp, 4
ret