Unaligned.c File Reference

#include "BaseLibInternals.h"

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Functions
UINT16 EFIAPI	ReadUnaligned16 (IN CONST UINT16 *Buffer)
UINT16 EFIAPI	WriteUnaligned16 (OUT UINT16 *Buffer, IN UINT16 Value)
UINT32 EFIAPI	ReadUnaligned24 (IN CONST UINT32 *Buffer)
UINT32 EFIAPI	WriteUnaligned24 (OUT UINT32 *Buffer, IN UINT32 Value)
UINT32 EFIAPI	ReadUnaligned32 (IN CONST UINT32 *Buffer)
UINT32 EFIAPI	WriteUnaligned32 (OUT UINT32 *Buffer, IN UINT32 Value)
UINT64 EFIAPI	ReadUnaligned64 (IN CONST UINT64 *Buffer)
UINT64 EFIAPI	WriteUnaligned64 (OUT UINT64 *Buffer, IN UINT64 Value)

Detailed Description

Unaligned access functions of BaseLib for ARM.

volatile was added to work around optimization issues.

Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file Unaligned.c.

Function Documentation

ReadUnaligned16()

UINT16 EFIAPI ReadUnaligned16

(

IN CONST UINT16 *

Buffer

)

Reads a 16-bit value from memory that may be unaligned.

This function returns the 16-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer

The pointer to a 16-bit value that may be unaligned.

Returns

The 16-bit value read from Buffer.

Definition at line 29 of file Unaligned.c.

ReadUnaligned24()

UINT32 EFIAPI ReadUnaligned24

(

IN CONST UINT32 *

Buffer

)

Reads a 24-bit value from memory that may be unaligned.

This function returns the 24-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer

The pointer to a 24-bit value that may be unaligned.

Returns

The 24-bit value read from Buffer.

Definition at line 89 of file Unaligned.c.

ReadUnaligned32()

UINT32 EFIAPI ReadUnaligned32

(

IN CONST UINT32 *

Buffer

)

Reads a 32-bit value from memory that may be unaligned.

This function returns the 32-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer

The pointer to a 32-bit value that may be unaligned.

Returns

The 32-bit value read from Buffer.

Definition at line 145 of file Unaligned.c.

ReadUnaligned64()

UINT64 EFIAPI ReadUnaligned64

(

IN CONST UINT64 *

Buffer

)

Reads a 64-bit value from memory that may be unaligned.

This function returns the 64-bit value pointed to by Buffer. The function guarantees that the read operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer

The pointer to a 64-bit value that may be unaligned.

Returns

The 64-bit value read from Buffer.

Definition at line 204 of file Unaligned.c.

WriteUnaligned16()

UINT16 EFIAPI WriteUnaligned16	(	OUT UINT16 *	Buffer,
		IN UINT16	Value
	)

Writes a 16-bit value to memory that may be unaligned.

This function writes the 16-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer	The pointer to a 16-bit value that may be unaligned.
Value	16-bit value to write to Buffer.

Returns

The 16-bit value to write to Buffer.

Definition at line 61 of file Unaligned.c.

WriteUnaligned24()

UINT32 EFIAPI WriteUnaligned24	(	OUT UINT32 *	Buffer,
		IN UINT32	Value
	)

Writes a 24-bit value to memory that may be unaligned.

This function writes the 24-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer	The pointer to a 24-bit value that may be unaligned.
Value	24-bit value to write to Buffer.

Returns

The 24-bit value to write to Buffer.

Definition at line 118 of file Unaligned.c.

WriteUnaligned32()

UINT32 EFIAPI WriteUnaligned32	(	OUT UINT32 *	Buffer,
		IN UINT32	Value
	)

Writes a 32-bit value to memory that may be unaligned.

This function writes the 32-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer	The pointer to a 32-bit value that may be unaligned.
Value	32-bit value to write to Buffer.

Returns

The 32-bit value to write to Buffer.

Definition at line 177 of file Unaligned.c.

WriteUnaligned64()

UINT64 EFIAPI WriteUnaligned64	(	OUT UINT64 *	Buffer,
		IN UINT64	Value
	)

Writes a 64-bit value to memory that may be unaligned.

This function writes the 64-bit value specified by Value to Buffer. Value is returned. The function guarantees that the write operation does not produce an alignment fault.

If the Buffer is NULL, then ASSERT().

Parameters

Buffer	The pointer to a 64-bit value that may be unaligned.
Value	64-bit value to write to Buffer.

Returns

The 64-bit value to write to Buffer.

Definition at line 236 of file Unaligned.c.