X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=IntelFspPkg%2FFspSecCore%2FIa32%2FStack.asm;fp=IntelFspPkg%2FFspSecCore%2FIa32%2FStack.asm;h=0000000000000000000000000000000000000000;hp=95e56cec9b23486103dc98cc0d7472f9a3469023;hb=1a48fda5315433661c2f3039a30aea5916c22267;hpb=e8015f2facfffa31db8a06c1121647f76f1035dc diff --git a/IntelFspPkg/FspSecCore/Ia32/Stack.asm b/IntelFspPkg/FspSecCore/Ia32/Stack.asm deleted file mode 100644 index 95e56cec9b..0000000000 --- a/IntelFspPkg/FspSecCore/Ia32/Stack.asm +++ /dev/null @@ -1,76 +0,0 @@ -;------------------------------------------------------------------------------ -; -; Copyright (c) 2014, Intel Corporation. All rights reserved.
-; SPDX-License-Identifier: BSD-2-Clause-Patent -; -; Abstract: -; -; Switch the stack from temporary memory to permenent memory. -; -;------------------------------------------------------------------------------ - - .586p - .model flat,C - .code - -;------------------------------------------------------------------------------ -; VOID -; EFIAPI -; SecSwitchStack ( -; UINT32 TemporaryMemoryBase, -; UINT32 PermenentMemoryBase -; ); -;------------------------------------------------------------------------------ -SecSwitchStack PROC - ; - ; Save three register: eax, ebx, ecx - ; - push eax - push ebx - push ecx - push edx - - ; - ; !!CAUTION!! this function address's is pushed into stack after - ; migration of whole temporary memory, so need save it to permenent - ; memory at first! - ; - - mov ebx, [esp + 20] ; Save the first parameter - mov ecx, [esp + 24] ; Save the second parameter - - ; - ; Save this function's return address into permenent memory at first. - ; Then, Fixup the esp point to permenent memory - ; - mov eax, esp - sub eax, ebx - add eax, ecx - mov edx, dword ptr [esp] ; copy pushed register's value to permenent memory - mov dword ptr [eax], edx - mov edx, dword ptr [esp + 4] - mov dword ptr [eax + 4], edx - mov edx, dword ptr [esp + 8] - mov dword ptr [eax + 8], edx - mov edx, dword ptr [esp + 12] - mov dword ptr [eax + 12], edx - mov edx, dword ptr [esp + 16] ; Update this function's return address into permenent memory - mov dword ptr [eax + 16], edx - mov esp, eax ; From now, esp is pointed to permenent memory - - ; - ; Fixup the ebp point to permenent memory - ; - mov eax, ebp - sub eax, ebx - add eax, ecx - mov ebp, eax ; From now, ebp is pointed to permenent memory - - pop edx - pop ecx - pop ebx - pop eax - ret -SecSwitchStack ENDP - - END