mirror of https://github.com/acidanthera/audk.git
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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/** @file
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Switch Stack functions.
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Copyright (c) 2006, Intel Corporation
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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: SetJumpLongJump.c
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**/
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/**
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Worker function that checks ASSERT condition for JumpBuffer
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Checks ASSERT condition for JumpBuffer.
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If JumpBuffer is NULL, then ASSERT().
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For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
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@param JumpBuffer A pointer to CPU context buffer.
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**/
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VOID
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InternalAssertJumpBuffer (
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IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
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);
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/**
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Saves the current CPU context that can be restored with a call to LongJump() and returns 0.
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Saves the current CPU context in the buffer specified by JumpBuffer and returns 0. The initial
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call to SetJump() must always return 0. Subsequent calls to LongJump() cause a non-zero
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value to be returned by SetJump().
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If JumpBuffer is NULL, then ASSERT().
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For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
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@param JumpBuffer A pointer to CPU context buffer.
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**/
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UINTN
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EFIAPI
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SetJump (
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IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
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)
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{
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InternalAssertJumpBuffer (JumpBuffer);
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return 0;
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}
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/**
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Restores the CPU context that was saved with SetJump().
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Restores the CPU context from the buffer specified by JumpBuffer.
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This function never returns to the caller.
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Instead is resumes execution based on the state of JumpBuffer.
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@param JumpBuffer A pointer to CPU context buffer.
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@param Value The value to return when the SetJump() context is restored.
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**/
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VOID
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EFIAPI
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InternalLongJump (
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IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer,
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IN UINTN Value
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)
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{
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//
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// This function cannot work on EBC
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//
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ASSERT (FALSE);
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}
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