--- /dev/null
+/** @file\r
+\r
+ Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>\r
+ 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
+\r
+#ifndef _FSP_SWITCH_STACK_LIB_H_\r
+#define _FSP_SWITCH_STACK_LIB_H_\r
+\r
+/**\r
+\r
+ This funciton will switch the current stack to the previous saved stack.\r
+ Before calling the previous stack has to be set in FSP_GLOBAL_DATA.CoreStack.\r
+ EIP\r
+ FLAGS 16 bit FLAGS 16 bit\r
+ EDI\r
+ ESI\r
+ EBP\r
+ ESP\r
+ EBX\r
+ EDX\r
+ ECX\r
+ EAX\r
+ DWORD IDT base1\r
+ StackPointer: DWORD IDT base2\r
+\r
+ @return ReturnKey After switching to the saved stack,\r
+ this value will be saved in eax before returning.\r
+\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+Pei2LoaderSwitchStack (\r
+ VOID\r
+ );\r
+\r
+#endif\r