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252 lines
6.7 KiB
252 lines
6.7 KiB
4 years ago
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/** @file
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Declaration of internal functions for Base Memory Library.
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The following BaseMemoryLib instances contain the same copy of this file:
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BaseMemoryLib
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BaseMemoryLibMmx
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BaseMemoryLibSse2
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BaseMemoryLibRepStr
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BaseMemoryLibOptDxe
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BaseMemoryLibOptPei
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Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
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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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**/
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#ifndef __MEM_LIB_INTERNALS__
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#define __MEM_LIB_INTERNALS__
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#include <Base.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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/**
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Copy Length bytes from Source to Destination.
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@param DestinationBuffer Target of copy
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@param SourceBuffer Place to copy from
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@param Length The number of bytes to copy
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@return Destination
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**/
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VOID *
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EFIAPI
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InternalMemCopyMem (
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OUT VOID *DestinationBuffer,
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IN CONST VOID *SourceBuffer,
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IN UINTN Length
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);
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/**
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Set Buffer to Value for Size bytes.
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@param Buffer The memory to set.
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@param Length The number of bytes to set
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@param Value The value of the set operation.
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@return Buffer
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**/
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VOID *
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EFIAPI
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InternalMemSetMem (
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OUT VOID *Buffer,
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IN UINTN Length,
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IN UINT8 Value
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);
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/**
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Fills a target buffer with a 16-bit value, and returns the target buffer.
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@param Buffer The pointer to the target buffer to fill.
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@param Length The count of 16-bit value to fill.
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@param Value The value with which to fill Length bytes of Buffer.
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@return Buffer
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**/
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VOID *
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EFIAPI
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InternalMemSetMem16 (
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OUT VOID *Buffer,
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IN UINTN Length,
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IN UINT16 Value
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);
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/**
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Fills a target buffer with a 32-bit value, and returns the target buffer.
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@param Buffer The pointer to the target buffer to fill.
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@param Length The count of 32-bit value to fill.
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@param Value The value with which to fill Length bytes of Buffer.
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@return Buffer
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**/
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VOID *
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EFIAPI
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InternalMemSetMem32 (
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OUT VOID *Buffer,
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IN UINTN Length,
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IN UINT32 Value
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);
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/**
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Fills a target buffer with a 64-bit value, and returns the target buffer.
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@param Buffer The pointer to the target buffer to fill.
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@param Length The count of 64-bit value to fill.
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@param Value The value with which to fill Length bytes of Buffer.
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@return Buffer
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**/
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VOID *
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EFIAPI
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InternalMemSetMem64 (
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OUT VOID *Buffer,
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IN UINTN Length,
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IN UINT64 Value
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);
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/**
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Set Buffer to 0 for Size bytes.
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@param Buffer The memory to set.
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@param Length The number of bytes to set.
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@return Buffer
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**/
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VOID *
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EFIAPI
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InternalMemZeroMem (
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OUT VOID *Buffer,
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IN UINTN Length
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);
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/**
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Compares two memory buffers of a given length.
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@param DestinationBuffer The first memory buffer.
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@param SourceBuffer The second memory buffer.
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@param Length The length of DestinationBuffer and SourceBuffer memory
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regions to compare. Must be non-zero.
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@return 0 All Length bytes of the two buffers are identical.
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@retval Non-zero The first mismatched byte in SourceBuffer subtracted from the first
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mismatched byte in DestinationBuffer.
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**/
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INTN
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EFIAPI
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InternalMemCompareMem (
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IN CONST VOID *DestinationBuffer,
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IN CONST VOID *SourceBuffer,
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IN UINTN Length
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);
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/**
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Scans a target buffer for an 8-bit value, and returns a pointer to the
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matching 8-bit value in the target buffer.
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@param Buffer The pointer to the target buffer to scan.
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@param Length The count of 8-bit value to scan. Must be non-zero.
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@param Value The value to search for in the target buffer.
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@return The pointer to the first occurrence, or NULL if not found.
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**/
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CONST VOID *
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EFIAPI
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InternalMemScanMem8 (
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IN CONST VOID *Buffer,
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IN UINTN Length,
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IN UINT8 Value
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);
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/**
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Scans a target buffer for a 16-bit value, and returns a pointer to the
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matching 16-bit value in the target buffer.
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@param Buffer The pointer to the target buffer to scan.
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@param Length The count of 16-bit value to scan. Must be non-zero.
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@param Value The value to search for in the target buffer.
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@return The pointer to the first occurrence, or NULL if not found.
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**/
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CONST VOID *
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EFIAPI
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InternalMemScanMem16 (
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IN CONST VOID *Buffer,
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IN UINTN Length,
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IN UINT16 Value
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);
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/**
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Scans a target buffer for a 32-bit value, and returns a pointer to the
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matching 32-bit value in the target buffer.
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@param Buffer The pointer to the target buffer to scan.
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@param Length The count of 32-bit value to scan. Must be non-zero.
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@param Value The value to search for in the target buffer.
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@return The pointer to the first occurrence, or NULL if not found.
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**/
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CONST VOID *
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EFIAPI
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InternalMemScanMem32 (
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IN CONST VOID *Buffer,
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IN UINTN Length,
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IN UINT32 Value
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);
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/**
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Scans a target buffer for a 64-bit value, and returns a pointer to the
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matching 64-bit value in the target buffer.
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@param Buffer The pointer to the target buffer to scan.
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@param Length The count of 64-bit value to scan. Must be non-zero.
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@param Value The value to search for in the target buffer.
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@return The pointer to the first occurrence, or NULL if not found.
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**/
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CONST VOID *
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EFIAPI
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InternalMemScanMem64 (
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IN CONST VOID *Buffer,
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IN UINTN Length,
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IN UINT64 Value
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);
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/**
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Checks whether the contents of a buffer are all zeros.
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@param Buffer The pointer to the buffer to be checked.
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@param Length The size of the buffer (in bytes) to be checked.
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@retval TRUE Contents of the buffer are all zeros.
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@retval FALSE Contents of the buffer are not all zeros.
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**/
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BOOLEAN
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EFIAPI
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InternalMemIsZeroBuffer (
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IN CONST VOID *Buffer,
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IN UINTN Length
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);
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#endif
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