From d24f2876255efe763d637e6da9ab67f3888ecdbb Mon Sep 17 00:00:00 2001
From: Jordan Justen <jordan.l.justen@intel.com>
Date: Fri, 31 Oct 2014 01:18:48 -0700
Subject: [PATCH] MdeModulePkg DxeIplPeim: Convert Ia32/IdtVectorAsm.asm to
 NASM

The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
Ia32/IdtVectorAsm.asm to Ia32/IdtVectorAsm.nasm

Note: Manually updated code storing @VectorTemplateBase address

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
---
 MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf       |  1 +
 .../Core/DxeIplPeim/Ia32/IdtVectorAsm.nasm    | 77 +++++++++++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 MdeModulePkg/Core/DxeIplPeim/Ia32/IdtVectorAsm.nasm

diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
index 79f70d1a7c..6275ccebbd 100644
--- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
@@ -40,6 +40,7 @@
   X64/VirtualMemory.h  ||||gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
   X64/VirtualMemory.c  ||||gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
   Ia32/DxeLoadFunc.c
+  Ia32/IdtVectorAsm.nasm||||gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
   Ia32/IdtVectorAsm.asm||||gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
   Ia32/IdtVectorAsm.S  ||||gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
 
diff --git a/MdeModulePkg/Core/DxeIplPeim/Ia32/IdtVectorAsm.nasm b/MdeModulePkg/Core/DxeIplPeim/Ia32/IdtVectorAsm.nasm
new file mode 100644
index 0000000000..99a0bbeea8
--- /dev/null
+++ b/MdeModulePkg/Core/DxeIplPeim/Ia32/IdtVectorAsm.nasm
@@ -0,0 +1,77 @@
+;/** @file
+;
+;    IDT vector entry.
+;
+;  Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
+;  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.
+;
+;**/
+
+    SECTION .text
+
+;
+;------------------------------------------------------------------------------
+;  Generic IDT Vector Handlers for the Host.
+;
+;------------------------------------------------------------------------------
+
+ALIGN   8
+global ASM_PFX(AsmGetVectorTemplatInfo)
+global ASM_PFX(AsmVectorFixup)
+
+@VectorTemplateBase:
+        push  eax
+        db    0x6a       ; push #VectorNumber
+@VectorNum:
+        db    0
+        mov   eax, CommonInterruptEntry
+        jmp   eax
+@VectorTemplateEnd:
+
+global ASM_PFX(AsmGetVectorTemplatInfo)
+ASM_PFX(AsmGetVectorTemplatInfo):
+        mov   ecx, [esp + 4]
+        mov   dword [ecx], @VectorTemplateBase
+        mov   eax, (@VectorTemplateEnd - @VectorTemplateBase)
+        ret
+
+global ASM_PFX(AsmVectorFixup)
+ASM_PFX(AsmVectorFixup):
+        mov   eax, dword [esp + 8]
+        mov   ecx, [esp + 4]
+        mov   [ecx + (@VectorNum - @VectorTemplateBase)], al
+        ret
+
+;---------------------------------------;
+; CommonInterruptEntry                  ;
+;---------------------------------------;
+; The follow algorithm is used for the common interrupt routine.
+
+;
+; +---------------------+ <-- 16-byte aligned ensured by processor
+; +    Old SS           +
+; +---------------------+
+; +    Old RSP          +
+; +---------------------+
+; +    RFlags           +
+; +---------------------+
+; +    CS               +
+; +---------------------+
+; +    RIP              +
+; +---------------------+
+; +    Error Code       +
+; +---------------------+
+; +    Vector Number    +
+; +---------------------+
+
+CommonInterruptEntry:
+  cli
+
+  jmp $
+