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      1 ;/** @file
      2 ;  
      3 ;    IDT vector entry.
      4 ;  
      5 ;  Copyright (c) 2007 - 2008, Intel Corporation. All rights reserved.<BR>
      6 ;  This program and the accompanying materials
      7 ;  are licensed and made available under the terms and conditions of the BSD License
      8 ;  which accompanies this distribution.  The full text of the license may be found at
      9 ;  http://opensource.org/licenses/bsd-license.php
     10 ;  
     11 ;  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     12 ;  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     13 ;  
     14 ;**/
     15 
     16     .686p
     17     .model  flat,C
     18     .code
     19 
     20 ;
     21 ;------------------------------------------------------------------------------
     22 ;  Generic IDT Vector Handlers for the Host. 
     23 ;
     24 ;------------------------------------------------------------------------------
     25 
     26 ALIGN   8
     27 PUBLIC  AsmGetVectorTemplatInfo
     28 PUBLIC  AsmVectorFixup
     29 
     30 PUBLIC  AsmVectorFixup
     31 
     32 @VectorTemplateBase:
     33         push  eax
     34         db    6ah       ; push #VectorNumber
     35 @VectorNum:
     36         db    0
     37         mov   eax, CommonInterruptEntry
     38         jmp   eax
     39 @VectorTemplateEnd:
     40 
     41 
     42 AsmGetVectorTemplatInfo PROC
     43         mov   ecx, [esp + 4]
     44         mov   [ecx], @VectorTemplateBase
     45         mov   eax, (@VectorTemplateEnd - @VectorTemplateBase)
     46         ret
     47 AsmGetVectorTemplatInfo ENDP
     48 
     49 
     50 AsmVectorFixup PROC
     51         mov   eax, dword ptr [esp + 8]
     52         mov   ecx, [esp + 4]
     53         mov   [ecx + (@VectorNum - @VectorTemplateBase)], al
     54         ret
     55 AsmVectorFixup ENDP
     56 
     57 
     58 ;---------------------------------------;
     59 ; CommonInterruptEntry                  ;
     60 ;---------------------------------------;
     61 ; The follow algorithm is used for the common interrupt routine.
     62 
     63 ;
     64 ; +---------------------+ <-- 16-byte aligned ensured by processor
     65 ; +    Old SS           +
     66 ; +---------------------+
     67 ; +    Old RSP          +
     68 ; +---------------------+
     69 ; +    RFlags           +
     70 ; +---------------------+
     71 ; +    CS               +
     72 ; +---------------------+
     73 ; +    RIP              +
     74 ; +---------------------+
     75 ; +    Error Code       +
     76 ; +---------------------+
     77 ; +    Vector Number    +
     78 ; +---------------------+
     79 
     80 CommonInterruptEntry PROC 
     81   cli
     82  
     83   jmp $
     84 CommonInterruptEntry ENDP
     85 
     86 END
     87 
     88 
     89