878ddf1fc3
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
/*++
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Copyright (c) 2004, 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:
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EfiJump.h
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Abstract:
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This is the Setjump/Longjump pair for an IA32 processor.
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--*/
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#ifndef _EFI_JUMP_H_
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#define _EFI_JUMP_H_
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#include EFI_GUID_DEFINITION (PeiTransferControl)
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//
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// NOTE:Set/LongJump needs to have this buffer start
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// at 16 byte boundary. Either fix the structure
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// which call this buffer or fix inside SetJump/LongJump
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// Choosing 1K buffer storage for now
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//
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typedef struct {
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CHAR8 Buffer[1024];
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} EFI_JUMP_BUFFER;
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EFI_STATUS
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SetJump (
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IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This,
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IN EFI_JUMP_BUFFER *Jump
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)
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/*++
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Routine Description:
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SetJump stores the current register set in the area pointed to
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by "save". It returns zero. Subsequent calls to "LongJump" will
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restore the registers and return non-zero to the same location.
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On entry, r32 contains the pointer to the jmp_buffer
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Arguments:
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This - Calling context
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Jump - Jump buffer
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Returns:
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Status code
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--*/
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;
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EFI_STATUS
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LongJump (
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IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This,
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IN EFI_JUMP_BUFFER *Jump
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)
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/*++
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Routine Description:
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LongJump initializes the register set to the values saved by a
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previous 'SetJump' and jumps to the return location saved by that
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'SetJump'. This has the effect of unwinding the stack and returning
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for a second time to the 'SetJump'.
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Arguments:
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This - Calling context
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Jump - Jump buffer
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Returns:
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Status code
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--*/
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;
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VOID
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RtPioICacheFlush (
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IN VOID *StartAddress,
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IN UINTN SizeInBytes
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)
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/*++
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Routine Description:
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Flushing the CPU instruction cache.
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Arguments:
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StartAddress - Start address to flush
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SizeInBytes - Length in bytes to flush
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Returns:
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None
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--*/
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;
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#endif
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