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TITLE SwitchCoreStacks.asm: Core stack switching routine
;------------------------------------------------------------------------------
;Copyright (c) 2004, 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:
;
; SwitchCoreStacks.asm
;
;Abstract:
;
; Core stack switching routine, invoked when real system memory is
; discovered and installed.
;
;------------------------------------------------------------------------------
.686P
.XMM
.MODEL SMALL
.CODE
AsmWriteMm7 PROTO C
AsmWriteMm7 PROC C
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; AsmWriteMm7 (
; IN UINT64 Value
; );
;------------------------------------------------------------------------------
movq mm7, [esp + 4]
ret
AsmWriteMm7 ENDP
SwitchCoreStacks PROTO C EntryPoint: DWORD, Parameter1: DWORD, Parameter2: DWORD, NewStack: DWORD
SwitchCoreStacks PROC C EntryPoint: DWORD, Parameter1: DWORD, Parameter2: DWORD, NewStack: DWORD
;------------------------------------------------------------------------------
; VOID
; SwitchCoreStacks (
; IN VOID *EntryPoint,
; IN UINTN Parameter1,
; IN UINTN Parameter2,
; IN VOID *NewStack
; )
;
; Routine Description:
;
; Routine for PEI switching stacks.
;
; Arguments:
;
; EntryPoint - Entry point with new stack.
; Parameter1 - First parameter for entry point.
; Parameter2 - Second parameter for entry point.
; NewStack - Pointer to new stack.
;
; Returns:
;
; None
;
;----------------------------------------------------
mov ebx, Parameter1
mov edx, Parameter2
mov ecx, EntryPoint
mov esp, NewStack
; First push Parameter2, and then Parameter1.
push edx
push ebx
call ecx
ret
SwitchCoreStacks ENDP
END
|
