Removed CommonHeader.h generated file from the MdePkg.

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / InternalSwitchStack.c

diff --git a/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c b/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c
index 484313ea674b3f1a3e7e80c3a647c9ea2ac1d424..2bd46a0ffbdc5b37b6f063e7d84bdf2051e25125 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c
+++ b/MdePkg/Library/BaseLib/Ia32/InternalSwitchStack.c
@@ -1,7 +1,7 @@
 /** @file\r
   SwitchStack() function for IA-32.\r
 \r
-  Copyright (c) 2006, Intel Corporation<BR>\r
+  Copyright (c) 2006 - 2007, 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
@@ -14,13 +14,25 @@
 \r
 **/\r
 \r
+//\r
+// Include common header file for this module.\r
+//\r
+#include <BaseLibInternals.h>\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
+  Transfers control to the function specified by EntryPoint using the\r
+  new stack specified by NewStack and passing in the parameters specified\r
+  by Context1 and Context2.  Context1 and Context2 are optional and may\r
+  be NULL.  The function EntryPoint must never return.\r
+  Marker will be ignored on IA-32, x64, and EBC.\r
+  IPF CPUs expect one additional parameter of type VOID * that specifies\r
+  the new backing store pointer.\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
@@ -29,18 +41,26 @@
                       function.\r
   @param  NewStack    A pointer to the new stack to use for the EntryPoint\r
                       function.\r
+  @param  Marker      VA_LIST marker for the variable argument list.\r
 \r
 **/\r
 VOID\r
+EFIAPI\r
 InternalSwitchStack (\r
   IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,\r
-  IN      VOID                      *Context1,\r
-  IN      VOID                      *Context2,\r
-  IN      VOID                      *NewStack\r
+  IN      VOID                      *Context1,   OPTIONAL\r
+  IN      VOID                      *Context2,   OPTIONAL\r
+  IN      VOID                      *NewStack,\r
+  IN      VA_LIST                   Marker\r
   )\r
 {\r
   BASE_LIBRARY_JUMP_BUFFER  JumpBuffer;\r
 \r
+  //\r
+  // Stack should be aligned with CPU_STACK_ALIGNMENT\r
+  //\r
+  ASSERT (((UINTN)NewStack & (CPU_STACK_ALIGNMENT - 1)) == 0);\r
+\r
   JumpBuffer.Eip = (UINTN)EntryPoint;\r
   JumpBuffer.Esp = (UINTN)NewStack - sizeof (VOID*);\r
   JumpBuffer.Esp -= sizeof (Context1) + sizeof (Context2);\r