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Added to support X64 port (with SV5 ABI). May be able to remove after we port everything, but Sec, to EFI X64 ABI.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10683 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
andrewfish
2010-07-22 19:22:34 +00:00
parent 7119d96a6f
commit 5fc3b5d6c8
148 changed files with 15774 additions and 0 deletions
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79
UnixPkg/Library/UnixBaseLib/X64/SwitchStack.S Normal file
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#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, 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.
#
# Module Name:
#
# SwitchStack.S
#
# Abstract:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# Routine Description:
#
# Routine for switching stacks with 2 parameters
#
# Arguments:
#
# (rcx) EntryPoint - Entry point with new stack.
# (rdx) Context1 - Parameter1 for entry point.
# (r8) Context2 - Parameter2 for entry point.
# (r9) NewStack - The pointer to new stack.
#
# Returns:
#
# None
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(EfiInternalSwitchStack)
ASM_PFX(EfiInternalSwitchStack):
mov %rcx, %rax
mov %rdx, %rcx
mov %r8, %rdx
#
# Reserve space for register parameters (rcx, rdx, r8 & r9) on the stack,
# in case the callee wishes to spill them.
#
lea -0x20(%r9), %rsp
call *%rax
#------------------------------------------------------------------------------
# Routine Description:
#
# Routine for switching stacks with 2 parameters (Unix ABI)
#
# Arguments:
#
# (rdi) EntryPoint - Entry point with new stack.
# (rsi) Context1 - Parameter1 for entry point.
# (rdx) Context2 - Parameter2 for entry point.
# (rcx) NewStack - The pointer to new stack.
#
# Returns:
#
# None
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(InternalSwitchStack)
ASM_PFX(InternalSwitchStack):
mov %rdi, %rax
mov %rsi, %rdi
mov %rdx, %rsi
#
# Reserve space for register parameters (rcx, rdx, r8 & r9) on the stack,
# in case the callee wishes to spill them.
#
lea -0x20(%rcx), %rsp
call *%rax