MemLibGeneric.c File Reference

#include "MemLibInternals.h"

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Functions
VOID *EFIAPI	InternalMemSetMem16 (OUT VOID *Buffer, IN UINTN Length, IN UINT16 Value)
VOID *EFIAPI	InternalMemSetMem32 (OUT VOID *Buffer, IN UINTN Length, IN UINT32 Value)
VOID *EFIAPI	InternalMemSetMem64 (OUT VOID *Buffer, IN UINTN Length, IN UINT64 Value)
VOID *EFIAPI	InternalMemZeroMem (OUT VOID *Buffer, IN UINTN Length)
INTN EFIAPI	InternalMemCompareMem (IN CONST VOID *DestinationBuffer, IN CONST VOID *SourceBuffer, IN UINTN Length)
CONST VOID *EFIAPI	InternalMemScanMem8 (IN CONST VOID *Buffer, IN UINTN Length, IN UINT8 Value)
CONST VOID *EFIAPI	InternalMemScanMem16 (IN CONST VOID *Buffer, IN UINTN Length, IN UINT16 Value)
CONST VOID *EFIAPI	InternalMemScanMem32 (IN CONST VOID *Buffer, IN UINTN Length, IN UINT32 Value)
CONST VOID *EFIAPI	InternalMemScanMem64 (IN CONST VOID *Buffer, IN UINTN Length, IN UINT64 Value)
BOOLEAN EFIAPI	InternalMemIsZeroBuffer (IN CONST VOID *Buffer, IN UINTN Length)

Detailed Description

Architecture Independent Base Memory Library Implementation.

The following BaseMemoryLib instances contain the same copy of this file: BaseMemoryLib PeiMemoryLib UefiMemoryLib

Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file MemLibGeneric.c.

Function Documentation

InternalMemCompareMem()

INTN EFIAPI InternalMemCompareMem	(	IN CONST VOID *	DestinationBuffer,
		IN CONST VOID *	SourceBuffer,
		IN UINTN	Length
	)

Compares two memory buffers of a given length.

Parameters

DestinationBuffer	The first memory buffer.
SourceBuffer	The second memory buffer.
Length	Length of DestinationBuffer and SourceBuffer memory regions to compare. Must be non-zero.

Returns

0 All Length bytes of the two buffers are identical.

Return values

Non-zero

The first mismatched byte in SourceBuffer subtracted from the first mismatched byte in DestinationBuffer.

Definition at line 125 of file MemLibGeneric.c.

InternalMemIsZeroBuffer()

BOOLEAN EFIAPI InternalMemIsZeroBuffer	(	IN CONST VOID *	Buffer,
		IN UINTN	Length
	)

Checks whether the contents of a buffer are all zeros.

Parameters

Buffer	The pointer to the buffer to be checked.
Length	The size of the buffer (in bytes) to be checked.

Return values

TRUE	Contents of the buffer are all zeros.
FALSE	Contents of the buffer are not all zeros.

Definition at line 285 of file MemLibGeneric.c.

InternalMemScanMem16()

CONST VOID *EFIAPI InternalMemScanMem16	(	IN CONST VOID *	Buffer,
		IN UINTN	Length,
		IN UINT16	Value
	)

Scans a target buffer for a 16-bit value, and returns a pointer to the matching 16-bit value in the target buffer.

Parameters

Buffer	The pointer to the target buffer to scan.
Length	The count of 16-bit value to scan. Must be non-zero.
Value	The value to search for in the target buffer.

Returns

The pointer to the first occurrence, or NULL if not found.

Definition at line 187 of file MemLibGeneric.c.

InternalMemScanMem32()

CONST VOID *EFIAPI InternalMemScanMem32	(	IN CONST VOID *	Buffer,
		IN UINTN	Length,
		IN UINT32	Value
	)

Scans a target buffer for a 32-bit value, and returns a pointer to the matching 32-bit value in the target buffer.

Parameters

Buffer	The pointer to the target buffer to scan.
Length	The count of 32-bit value to scan. Must be non-zero.
Value	The value to search for in the target buffer.

Returns

The pointer to the first occurrence, or NULL if not found.

Definition at line 220 of file MemLibGeneric.c.

InternalMemScanMem64()

CONST VOID *EFIAPI InternalMemScanMem64	(	IN CONST VOID *	Buffer,
		IN UINTN	Length,
		IN UINT64	Value
	)

Scans a target buffer for a 64-bit value, and returns a pointer to the matching 64-bit value in the target buffer.

Parameters

Buffer	The pointer to the target buffer to scan.
Length	The count of 64-bit value to scan. Must be non-zero.
Value	The value to search for in the target buffer.

Returns

The pointer to the first occurrence, or NULL if not found.

Definition at line 253 of file MemLibGeneric.c.

InternalMemScanMem8()

CONST VOID *EFIAPI InternalMemScanMem8	(	IN CONST VOID *	Buffer,
		IN UINTN	Length,
		IN UINT8	Value
	)

Scans a target buffer for an 8-bit value, and returns a pointer to the matching 8-bit value in the target buffer.

Parameters

Buffer	The pointer to the target buffer to scan.
Length	The count of 8-bit value to scan. Must be non-zero.
Value	The value to search for in the target buffer.

Returns

The pointer to the first occurrence, or NULL if not found.

Definition at line 154 of file MemLibGeneric.c.

InternalMemSetMem16()

VOID *EFIAPI InternalMemSetMem16	(	OUT VOID *	Buffer,
		IN UINTN	Length,
		IN UINT16	Value
	)

Fills a target buffer with a 16-bit value, and returns the target buffer.

Parameters

Buffer	The pointer to the target buffer to fill.
Length	The count of 16-bit value to fill.
Value	The value with which to fill Length bytes of Buffer.

Returns

Buffer

Definition at line 28 of file MemLibGeneric.c.

InternalMemSetMem32()

VOID *EFIAPI InternalMemSetMem32	(	OUT VOID *	Buffer,
		IN UINTN	Length,
		IN UINT32	Value
	)

Fills a target buffer with a 32-bit value, and returns the target buffer.

Parameters

Buffer	The pointer to the target buffer to fill.
Length	The count of 32-bit value to fill.
Value	The value with which to fill Length bytes of Buffer.

Returns

Buffer

Definition at line 53 of file MemLibGeneric.c.

InternalMemSetMem64()

VOID *EFIAPI InternalMemSetMem64	(	OUT VOID *	Buffer,
		IN UINTN	Length,
		IN UINT64	Value
	)

Fills a target buffer with a 64-bit value, and returns the target buffer.

Parameters

Buffer	The pointer to the target buffer to fill.
Length	The count of 64-bit value to fill.
Value	The value with which to fill Length bytes of Buffer.

Returns

Buffer

Definition at line 78 of file MemLibGeneric.c.

InternalMemZeroMem()

VOID *EFIAPI InternalMemZeroMem	(	OUT VOID *	Buffer,
		IN UINTN	Length
	)

Set Buffer to 0 for Size bytes.

Parameters

Buffer	Memory to set.
Length	The number of bytes to set.

Returns

Buffer

Definition at line 102 of file MemLibGeneric.c.