MdePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdePkg / Library / BaseLib / SwitchStack.c

diff --git a/MdePkg/Library/BaseLib/SwitchStack.c b/MdePkg/Library/BaseLib/SwitchStack.c
index 445485660719a3ddb3c0c168bae90d8a321a4fca..cb9f69f1eaceba690b48e9ca6b8a9af2e348bddd 100644 (file)
--- a/MdePkg/Library/BaseLib/SwitchStack.c
+++ b/MdePkg/Library/BaseLib/SwitchStack.c
@@ -1,14 +1,8 @@
 /** @file\r
   Switch Stack functions.\r
 \r
-  Copyright (c) 2006 - 2008, Intel Corporation<BR>\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
+  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -36,6 +30,11 @@
                       function.\r
   @param  NewStack    A pointer to the new stack to use for the EntryPoint\r
                       function.\r
+  @param  ...         This variable argument list is ignored for IA32, x64, and EBC.\r
+                      For IPF, this variable argument list is expected to contain\r
+                      a single parameter of type VOID * that specifies the new backing\r
+                      store pointer.\r
+\r
 \r
 **/\r
 VOID\r
@@ -53,10 +52,17 @@ SwitchStack (
   ASSERT (EntryPoint != NULL);\r
   ASSERT (NewStack != NULL);\r
 \r
+  //\r
+  // New stack must be aligned with CPU_STACK_ALIGNMENT\r
+  //\r
+  ASSERT (((UINTN)NewStack & (CPU_STACK_ALIGNMENT - 1)) == 0);\r
+\r
   VA_START (Marker, NewStack);\r
 \r
   InternalSwitchStack (EntryPoint, Context1, Context2, NewStack, Marker);\r
 \r
+  VA_END (Marker);\r
+\r
   //\r
   // InternalSwitchStack () will never return\r
   //\r