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e3ba31da1c
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*++
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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--*/
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#include "Host.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 new stack
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specified by NewStack and passing in the parameters specified by Context1 and
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Context2. Context1 and Context2 are optional and may be NULL. The function
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EntryPoint must never return.
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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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PeiSwitchStacks (
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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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BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
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ASSERT (EntryPoint != NULL);
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ASSERT (NewStack != NULL);
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//
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// Stack should be aligned with CPU_STACK_ALIGNMENT
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//
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ASSERT (((UINTN)NewStack & (CPU_STACK_ALIGNMENT - 1)) == 0);
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JumpBuffer.Eip = (UINTN)EntryPoint;
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JumpBuffer.Esp = (UINTN)NewStack - sizeof (VOID*);
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JumpBuffer.Esp -= sizeof (Context1) + sizeof (Context2);
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((VOID**)JumpBuffer.Esp)[1] = Context1;
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((VOID**)JumpBuffer.Esp)[2] = Context2;
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LongJump (&JumpBuffer, (UINTN)-1);
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//
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// PeiSwitchStacks () will never return
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//
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ASSERT (FALSE);
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}
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