Created as one wrapper

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

diff --git a/MdePkg/Library/BaseLib/Ebc/SwitchStack.c b/MdePkg/Library/BaseLib/Ebc/SwitchStack.c
new file mode 100644 (file)
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+++ b/MdePkg/Library/BaseLib/Ebc/SwitchStack.c
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+/** @file\r
+  Switch Stack functions.\r
+\r
+  Copyright (c) 2006, 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
+\r
+  Module Name:  SwitchStack.c\r
+\r
+**/\r
+\r
+/**\r
+  Transfers control to a function starting with a new stack.\r
+\r
+  Transfers control to the function specified by EntryPoint using the new stack\r
+  specified by NewStack and passing in the parameters specified by Context1 and\r
+  Context2. Context1 and Context2 are optional and may be NULL. The function\r
+  EntryPoint must never return.\r
+\r
+  If EntryPoint is NULL, then ASSERT().\r
+  If NewStack is NULL, then ASSERT().\r
+\r
+  @param  EntryPoint  A pointer to function to call with the new stack.\r
+  @param  Context1    A pointer to the context to pass into the EntryPoint\r
+                      function.\r
+  @param  Context2    A pointer to the context to pass into the EntryPoint\r
+                      function.\r
+  @param  NewStack    A pointer to the new stack to use for the EntryPoint\r
+                      function.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SwitchStack (\r
+  IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,\r
+  IN      VOID                      *Context1,  OPTIONAL\r
+  IN      VOID                      *Context2,  OPTIONAL\r
+  IN      VOID                      *NewStack\r
+  )\r
+{\r
+  //\r
+  // This version of this function does not actually change the stack pointer\r
+  // This is to support compilation of CPU types that do not support assemblers\r
+  // such as EBC\r
+  //\r
+  EntryPoint (Context1, Context2);\r
+}\r