1 ;------------------------------------------------------------------------------
3 ; Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
4 ; This program and the accompanying materials
5 ; are licensed and made available under the terms and conditions of the BSD License
6 ; which accompanies this distribution. The full text of the license may be found at
7 ; http://opensource.org/licenses/bsd-license.php.
9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14 ; Switch the stack from temporary memory to permenent memory.
16 ;------------------------------------------------------------------------------
22 ;------------------------------------------------------------------------------
26 ; UINT32 TemporaryMemoryBase,
27 ; UINT32 PermenentMemoryBase
29 ;------------------------------------------------------------------------------
32 ; Save three register: eax, ebx, ecx
40 ; !!CAUTION!! this function address's is pushed into stack after
41 ; migration of whole temporary memory, so need save it to permenent
45 mov ebx, [esp + 20] ; Save the first parameter
46 mov ecx, [esp + 24] ; Save the second parameter
49 ; Save this function's return address into permenent memory at first.
50 ; Then, Fixup the esp point to permenent memory
55 mov edx, dword ptr [esp] ; copy pushed register's value to permenent memory
56 mov dword ptr [eax], edx
57 mov edx, dword ptr [esp + 4]
58 mov dword ptr [eax + 4], edx
59 mov edx, dword ptr [esp + 8]
60 mov dword ptr [eax + 8], edx
61 mov edx, dword ptr [esp + 12]
62 mov dword ptr [eax + 12], edx
63 mov edx, dword ptr [esp + 16] ; Update this function's return address into permenent memory
64 mov dword ptr [eax + 16], edx
65 mov esp, eax ; From now, esp is pointed to permenent memory
68 ; Fixup the ebp point to permenent memory
73 mov ebp, eax ; From now, ebp is pointed to permenent memory