EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/X64/SwitchStack.asm

   1 ; Copyright (c) 2004, Intel Corporation
   2 ; All rights reserved. This program and the accompanying materials
   3 ; are licensed and made available under the terms and conditions of the BSD License
   4 ; which accompanies this distribution.  The full text of the license may be found at
   5 ; http://opensource.org/licenses/bsd-license.php
   6 ;
   7 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   8 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
   9 ;
  10 ; Module Name:
  11 ;
  12 ;   SwitchStack.Asm
  13 ;
  14 ; Abstract:
  15 ;
  16 ;------------------------------------------------------------------------------
  17
  18     .code
  19
  20 ;------------------------------------------------------------------------------
  21 ; Routine Description:
  22 ;
  23 ;   Routine for switching stacks with 1 parameter
  24 ;
  25 ; Arguments:
  26 ;
  27 ;   (rcx) EntryPoint    - Entry point with new stack.
  28 ;   (rdx) Context       - Parameter for entry point.
  29 ;   (r8)  Context2      - Parameter2 for entry point.
  30 ;   (r9)  NewStack      - Pointer to new stack.
  31 ;
  32 ; Returns:
  33 ;
  34 ;   None
  35 ;
  36 ;------------------------------------------------------------------------------
  37 InternalSwitchStack PROC
  38     mov     rax, rcx
  39     mov     rcx, rdx
  40     mov     rdx, r8
  41     lea     rsp, [r9 - 20h]
  42     call    rax
  43 InternalSwitchStack ENDP
  44
  45     END