;------------------------------------------------------------------------------ | |
; | |
; 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.Asm | |
; | |
; Abstract: | |
; | |
;------------------------------------------------------------------------------ | |
.code | |
;------------------------------------------------------------------------------ | |
; 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 | |
; | |
;------------------------------------------------------------------------------ | |
InternalSwitchStack PROC | |
mov rax, rcx | |
mov rcx, rdx | |
mov rdx, r8 | |
; | |
; Reserve space for register parameters (rcx, rdx, r8 & r9) on the stack, | |
; in case the callee wishes to spill them. | |
; | |
lea rsp, [r9 - 20h] | |
call rax | |
InternalSwitchStack ENDP | |
END |