edk2/BaseTools:

[mirror_edk2.git] / MdeModulePkg / Core / DxeIplPeim / Ia32 / IdtVectorAsm.asm

;-------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2007, Intel Corporation\r
; All rights reserved. This program and the accompanying materials\r
; are licensed and made available under the terms and conditions of the BSD License\r
; which accompanies this distribution.  The full text of the license may be found at\r
; http://opensource.org/licenses/bsd-license.php\r
\r
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
;\r
;\r
; Module Name:\r
;\r
;   IdtVectorAsm.asm\r
; \r
; Abstract:\r
; \r
;\r
;-------------------------------------------------------------------------------\r
\r
\r
    .686p\r
    .model  flat,C\r
    .code\r
\r
;\r
;------------------------------------------------------------------------------\r
;  Generic IDT Vector Handlers for the Host. \r
;\r
;------------------------------------------------------------------------------\r
\r
ALIGN   8\r
PUBLIC  AsmGetVectorTemplatInfo\r
PUBLIC  AsmVectorFixup\r
\r
PUBLIC  AsmVectorFixup\r
\r
@VectorTemplateBase:\r
        push  eax\r
        db    6ah       ; push #VectorNumber\r
@VectorNum:\r
        db    0\r
        mov   eax, CommonInterruptEntry\r
        jmp   eax\r
@VectorTemplateEnd:\r
\r
\r
AsmGetVectorTemplatInfo PROC\r
        mov   ecx, [esp + 4]\r
        mov   [ecx], @VectorTemplateBase\r
        mov   eax, (@VectorTemplateEnd - @VectorTemplateBase)\r
        ret\r
AsmGetVectorTemplatInfo ENDP\r
\r
\r
AsmVectorFixup PROC\r
        mov   eax, dword ptr [esp + 8]\r
        mov   ecx, [esp + 4]\r
        mov   [ecx + (@VectorNum - @VectorTemplateBase)], al\r
        ret\r
AsmVectorFixup ENDP\r
\r
\r
;---------------------------------------;\r
; CommonInterruptEntry                  ;\r
;---------------------------------------;\r
; The follow algorithm is used for the common interrupt routine.\r
\r
;\r
; +---------------------+ <-- 16-byte aligned ensured by processor\r
; +    Old SS           +\r
; +---------------------+\r
; +    Old RSP          +\r
; +---------------------+\r
; +    RFlags           +\r
; +---------------------+\r
; +    CS               +\r
; +---------------------+\r
; +    RIP              +\r
; +---------------------+\r
; +    Error Code       +\r
; +---------------------+\r
; +    Vector Number    +\r
; +---------------------+\r
\r
CommonInterruptEntry PROC \r
  cli\r
 \r
  jmp $\r
CommonInterruptEntry ENDP\r
\r
END\r
\r
\r