From 7d7c2b4640a6b46eed90af5777f8d22504519a8e Mon Sep 17 00:00:00 2001
From: vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Fri, 2 Jun 2006 07:58:31 +0000
Subject: Deleted x64\SwitchStack.c Ipf/SwitchStack.c. Added SwitchStack.c in
 Baselib\ Rename Ia32/SwitchStack.c to Ia32/InternalSwitchStack.c Changed
 _SwitchStack() into InternalSwitchStack() in SwitchStack.asm and
 SwitchStack.s Fixed one bug in LinkedList.c, that List length couldn't up to
 PcdMaximumLinkedListLength.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@394 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c | 52 +++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c

(limited to 'MdePkg/Library/BaseLib/Ia32')

diff --git a/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c b/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c
new file mode 100644
index 0000000000..ab8116b4b5
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c
@@ -0,0 +1,52 @@
+/** @file
+  SwitchStack() function for IA-32.
+
+  Copyright (c) 2006, Intel Corporation<BR>
+  All rights reserved. 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.
+
+  Module Name:  InternalSwitchStack.c
+
+**/
+
+/**
+  Transfers control to a function starting with a new stack.
+
+  Transfers control to the function specified by EntryPoint using the new stack
+  specified by NewStack and passing in the parameters specified by Context1 and
+  Context2. Context1 and Context2 are optional and may be NULL. The function
+  EntryPoint must never return.
+
+  @param  EntryPoint  A pointer to function to call with the new stack.
+  @param  Context1    A pointer to the context to pass into the EntryPoint
+                      function.
+  @param  Context2    A pointer to the context to pass into the EntryPoint
+                      function.
+  @param  NewStack    A pointer to the new stack to use for the EntryPoint
+                      function.
+
+**/
+VOID
+EFIAPI
+InternalSwitchStack (
+  IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,
+  IN      VOID                      *Context1,
+  IN      VOID                      *Context2,
+  IN      VOID                      *NewStack
+  )
+{
+  BASE_LIBRARY_JUMP_BUFFER  JumpBuffer;
+
+  JumpBuffer.Eip = (UINTN)EntryPoint;
+  JumpBuffer.Esp = (UINTN)NewStack - sizeof (VOID*);
+  JumpBuffer.Esp -= sizeof (Context1) + sizeof (Context2);
+  ((VOID**)JumpBuffer.Esp)[1] = Context1;
+  ((VOID**)JumpBuffer.Esp)[2] = Context2;
+
+  LongJump (&JumpBuffer, (UINTN)-1);
+}
-- 
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