EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/ia32/SupportItpDebug.asm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2006, Intel Corporation
   4 ; All rights reserved. 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
   8 ;
   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.
  11 ;
  12 ; Module Name:
  13 ;
  14 ;   SupportItpDebug.asm
  15 ;
  16 ; Abstract:
  17 ;
  18 ;   This is the code for debuging IA32, to add a break hook at loading every module
  19 ;
  20 ;------------------------------------------------------------------------------
  21
  22 ; PROC:PRIVATE
  23   .686P
  24   .MMX
  25   .MODEL SMALL
  26   .CODE
  27
  28 AsmEfiSetBreakSupport  PROTO  C LoadAddr:DWORD
  29
  30 ;------------------------------------------------------------------------------
  31 ;  VOID
  32 ;  AsmEfiSetBreakSupport (
  33 ;    IN UINTN  LoadAddr
  34 ;    )
  35 ;------------------------------------------------------------------------------
  36
  37 AsmEfiSetBreakSupport  PROC  C LoadAddr:DWORD
  38
  39     mov eax, LoadAddr
  40     mov dx,  60000
  41     out dx,  eax
  42     nop
  43     nop
  44     nop
  45     nop
  46     nop
  47     nop
  48     nop
  49     nop
  50     nop
  51     nop
  52     nop
  53     nop
  54     nop
  55     nop
  56     nop
  57     nop
  58     nop
  59     nop
  60     nop
  61     nop
  62     nop
  63     nop
  64     nop
  65     nop
  66     ret
  67
  68 AsmEfiSetBreakSupport  ENDP
  69   END