;------------------------------------------------------------------------------ ; ; Copyright (c) 2015, 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: ; ; MpFuncs32.asm ; ; Abstract: ; ; This is the assembly code for MP support ; ;------------------------------------------------------------------------------- .686p .model flat include MpEqu.inc .code AsmInitializeGdt PROC near C PUBLIC push ebp mov ebp, esp pushad mov edi, [ebp + 8] ; Load GDT register mov ax,cs ; Get the selector data from our code image mov es,ax lgdt FWORD PTR es:[edi] ; and update the GDTR push PROTECT_MODE_CS lea eax, SetCodeSelectorFarJump push eax retf SetCodeSelectorFarJump: mov ax, PROTECT_MODE_DS ; Update the Base for the new selectors, too mov ds, ax mov es, ax mov fs, ax mov gs, ax mov ss, ax popad pop ebp ret AsmInitializeGdt ENDP END