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/*++
Copyright (c) 2004, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
VfrServices.h
Abstract:
Prototypes and defines for routines and classes used by the
EFI VFR compiler.
--*/
#ifndef _VFR_SERVICES_H_
#define _VFR_SERVICES_H_
class VfrOpcodeHandler
{
public:
VfrOpcodeHandler (
VOID
)
/*++
Routine Description:
Constructor for the VFR opcode handling class.
Arguments:
None
Returns:
None
--*/
;
~VfrOpcodeHandler (
VOID
)
/*++
Routine Description:
Destructor for the VFR opcode handler. Free up memory allocated
while parsing the VFR script.
Arguments:
None
Returns:
None
--*/
;
void
WriteIfrBytes (
VOID
)
/*++
Routine Description:
This function is invoked at the end of parsing. Its purpose
is to write out all the IFR bytes that were queued up while
parsing.
Arguments:
None
Returns:
None
--*/
;
int
AddOpcodeByte (
UINT8 OpcodeByte,
UINT32 LineNum
)
/*++
Routine Description:
This function is invoked by the parser when a new IFR
opcode should be emitted.
Arguments:
OpcodeByte - the IFR opcode
LineNum - the line number from the source file that resulted
in the opcode being emitted.
Returns:
0 always
--*/
;
void
AddByte (
UINT8 ByteVal,
UINT8 KeyByte
)
/*++
Routine Description:
This function is invoked by the parser when it determines
that more raw IFR bytes should be emitted to the output stream.
Here we just queue them up into an output buffer.
Arguments:
ByteVal - the raw byte to emit to the output IFR stream
KeyByte - a value that can be used for debug.
Returns:
None
--*/
;
void
SetVarStoreId (
UINT16 VarStoreId
)
/*++
Routine Description:
This function is invoked by the parser when a variable is referenced in the
VFR. Save the variable store (and set a flag) so that we can later determine
if we need to emit a varstore-select or varstore-select-pair opcode.
Arguments:
VarStoreId - ID of the variable store referenced in the VFR
Returns:
None
--*/
;
void
SetSecondaryVarStoreId (
UINT16 VarStoreId
)
/*++
Routine Description:
This function is invoked by the parser when a secondary variable is
referenced in the VFR. Save the variable store (and set a flag) so
that we can later determine if we need to emit a varstore-select or
varstore-pair opcode.
Arguments:
VarStoreId - ID of the variable store referenced in the VFR
Returns:
None
--*/
;
/* */
private:
int
FlushQueue (
VOID
)
/*++
Routine Description:
This function is invoked to flush the internal IFR buffer.
Arguments:
None
Returns:
0 always
--*/
;
int
IAddByte (
UINT8 ByteVal,
UINT8 KeyByte,
UINT32 LineNum
)
/*++
Routine Description:
This internal function is used to add actual IFR bytes to
the output stream. Most other functions queue up the bytes
in an internal buffer. Once they come here, there's no
going back.
Arguments:
ByteVal - value to write to output
KeyByte - key value tied to the byte -- useful for debug
LineNum - line number from source file the byte resulted from
Returns:
0 - if successful
1 - failed due to memory allocation failure
--*/
;
/* */
private:
IFR_BYTE *mIfrBytes;
IFR_BYTE *mLastIfrByte;
UINT32 mQueuedByteCount;
UINT32 mBytesWritten;
UINT32 mQueuedLineNum;
UINT8 mQueuedBytes[MAX_QUEUE_COUNT];
UINT8 mQueuedKeyBytes[MAX_QUEUE_COUNT];
UINT8 mQueuedOpcodeByte;
UINT32 mQueuedOpcodeByteValid;
UINT16 mPrimaryVarStoreId;
UINT8 mPrimaryVarStoreIdSet;
UINT16 mSecondaryVarStoreId;
UINT8 mSecondaryVarStoreIdSet;
UINT16 mDefaultVarStoreId;
};
#endif // #ifndef _VFR_SERVICES_H_
|
