mirror of https://github.com/acidanthera/audk.git
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
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/** @file
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Switch Stack functions.
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Copyright (c) 2006 - 2007, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: SwitchStack.c
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**/
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//
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// Include common header file for this module.
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//
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#include "CommonHeader.h"
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#include <BaseLibInternals.h>
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/**
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Transfers control to a function starting with a new stack.
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Transfers control to the function specified by EntryPoint using the
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new stack specified by NewStack and passing in the parameters specified
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by Context1 and Context2. Context1 and Context2 are optional and may
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be NULL. The function EntryPoint must never return. This function
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supports a variable number of arguments following the NewStack parameter.
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These additional arguments are ignored on IA-32, x64, and EBC.
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IPF CPUs expect one additional parameter of type VOID * that specifies
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the new backing store pointer.
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If EntryPoint is NULL, then ASSERT().
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If NewStack is NULL, then ASSERT().
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@param EntryPoint A pointer to function to call with the new stack.
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@param Context1 A pointer to the context to pass into the EntryPoint
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function.
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@param Context2 A pointer to the context to pass into the EntryPoint
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function.
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@param NewStack A pointer to the new stack to use for the EntryPoint
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function.
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**/
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VOID
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EFIAPI
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SwitchStack (
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IN SWITCH_STACK_ENTRY_POINT EntryPoint,
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IN VOID *Context1, OPTIONAL
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IN VOID *Context2, OPTIONAL
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IN VOID *NewStack,
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...
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)
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{
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VA_LIST Marker;
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ASSERT (EntryPoint != NULL);
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ASSERT (NewStack != NULL);
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VA_START (Marker, NewStack);
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InternalSwitchStack (EntryPoint, Context1, Context2, NewStack, Marker);
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//
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// InternalSwitchStack () will never return
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//
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ASSERT (FALSE);
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}
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