DuetPkg/DxeIpl/Ia32/EnterDxeCore.asm

   1       TITLE   EnterDxeCore.asm: Assembly code for the entering DxeCore
   2 ;------------------------------------------------------------------------------
   3 ;*
   4 ;*   Copyright 2006, Intel Corporation
   5 ;*   All rights reserved. This program and the accompanying materials
   6 ;*   are licensed and made available under the terms and conditions of the BSD License
   7 ;*   which accompanies this distribution.  The full text of the license may be found at
   8 ;*   http://opensource.org/licenses/bsd-license.php
   9 ;*
  10 ;*   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 ;*   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 ;*
  13 ;*    EnterDxeCore.asm
  14 ;*
  15 ;*   Abstract:
  16 ;*
  17 ;------------------------------------------------------------------------------
  18
  19 .686p
  20 .model  flat
  21
  22 .code
  23 .stack
  24 .MMX
  25 .XMM
  26
  27 ;
  28 ; VOID
  29 ; EnterDxeMain (
  30 ;   IN VOID *StackTop,
  31 ;   IN VOID *DxeCoreEntryPoint,
  32 ;   IN VOID *Hob,
  33 ;   IN VOID *PageTable
  34 ;   )
  35 ;
  36 EnterDxeMain    PROC  C    \
  37   StackTop:DWORD,          \
  38   DxeCoreEntryPoint:DWORD, \
  39   Hob:DWORD,               \
  40   PageTable:DWORD
  41
  42   mov   eax, PageTable
  43 ;  mov   cr3, eax     ; load page table
  44 ;  mov   eax, cr4
  45 ;  bts   eax, 4       ; enable CR4.PSE
  46 ;  mov   cr4, eax
  47 ;  mov   eax, cr0
  48 ;  bts   eax, 31      ; enable CR0.PG
  49 ;  mov   cr0, eax
  50   mov   ecx, DxeCoreEntryPoint
  51   mov   eax, StackTop
  52   mov   esp, eax
  53   mov   edx, Hob
  54   push  edx
  55   push  0
  56   jmp   ecx
  57
  58 ; should never get here
  59   jmp $
  60   ret
  61
  62 EnterDxeMain    ENDP
  63
  64 END