audk/MdePkg/Library/BaseLib/X64/SwitchStack.S

45 lines
1.3 KiB
ArmAsm

#------------------------------------------------------------------------------
#
# Copyright (c) 2006, Intel Corporation
# All rights reserved. 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.
#
# Module Name:
#
# SwitchStack.S
#
# Abstract:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# Routine Description:
#
# Routine for switching stacks with 1 parameter
#
# Arguments:
#
# (rdi) EntryPoint - Entry point with new stack.
# (rsi) Context1 - Parameter1 for entry point.
# (rdx) Context2 - Parameter2 for entry point.
# (rcx) NewStack - Pointer to new stack.
#
# Returns:
#
# None
#
#------------------------------------------------------------------------------
.global _InternalSwitchStack;
_InternalSwitchStack:
mov %rcx, %rax
mov %rdx, %rcx
mov %r8, %rdx
lea -0x20(%r9), %rsp
call *%rax