From 64698eb8415e6829b956a12c3883655acc02f5a7 Mon Sep 17 00:00:00 2001
From: mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 18 Aug 2009 21:04:14 +0000
Subject: Add ARM support Add C inline assembly files for IA32 and X64 GCC
 builds.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9113 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Library/BaseLib/Arm/InternalSwitchStack.c | 59 ++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 MdePkg/Library/BaseLib/Arm/InternalSwitchStack.c

(limited to 'MdePkg/Library/BaseLib/Arm/InternalSwitchStack.c')

diff --git a/MdePkg/Library/BaseLib/Arm/InternalSwitchStack.c b/MdePkg/Library/BaseLib/Arm/InternalSwitchStack.c
new file mode 100644
index 0000000000..7b6351122f
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Arm/InternalSwitchStack.c
@@ -0,0 +1,59 @@
+/** @file
+  SwitchStack() function for ARM.
+
+  Copyright (c) 2006 - 2007, Intel Corporation<BR>
+  Portions copyright (c) 2008-2009 Apple Inc.<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.
+
+**/
+
+#include "BaseLibInternals.h"
+
+/**
+  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.
+  Marker will be ignored on IA-32, x64, and EBC.
+  IPF CPUs expect one additional parameter of type VOID * that specifies
+  the new backing store pointer.
+
+  If EntryPoint is NULL, then ASSERT().
+  If NewStack is NULL, then ASSERT().
+
+  @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.
+  @param  Marker      VA_LIST marker for the variable argument list.
+
+**/
+VOID
+EFIAPI
+InternalSwitchStack (
+  IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,
+  IN      VOID                      *Context1,   OPTIONAL
+  IN      VOID                      *Context2,   OPTIONAL
+  IN      VOID                      *NewStack,
+  IN      VA_LIST                   Marker
+  )
+
+{
+  //
+  // Stack should be aligned with CPU_STACK_ALIGNMENT
+  //
+  ASSERT (((UINTN)NewStack & (CPU_STACK_ALIGNMENT - 1)) == 0);
+
+  InternalSwitchStackAsm (EntryPoint, Context1, Context2, NewStack);
+}
-- 
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