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#------------------------------------------------------------------------------
#
# Copyright (c) 2014 - 2015, 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.
#
# Abstract:
#
# Switch the stack from temporary memory to permenent memory.
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# Pei2LoaderSwitchStack (
# VOID
# )
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(Pei2LoaderSwitchStack)
ASM_PFX(Pei2LoaderSwitchStack):
xorl %eax, %eax
jmp ASM_PFX(FspSwitchStack)
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# Loader2PeiSwitchStack (
# VOID
# )
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(Loader2PeiSwitchStack)
ASM_PFX(Loader2PeiSwitchStack):
jmp ASM_PFX(FspSwitchStack)
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# FspSwitchStack (
# VOID
# )
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(FspSwitchStack)
ASM_PFX(FspSwitchStack):
#
#Save current contexts
#
push %eax
pushf
cli
pusha
sub $0x08, %esp
sidt (%esp)
#
# Load new stack
#
push %esp
call ASM_PFX(SwapStack)
movl %eax, %esp
#
# Restore previous contexts
#
lidt (%esp)
add $0x08,%esp
popa
popf
add $0x04,%esp
ret
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