mirror of https://github.com/acidanthera/audk.git
621 lines
18 KiB
C
621 lines
18 KiB
C
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/** @file
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Wrapper functions for Base Memory Library.
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Copyright (c) 2006, Intel Corporation<BR>
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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: MemLibWrapper.c
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The following BaseMemoryLib instances share the same version 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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PeiMemoryLib
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UefiMemoryLib
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**/
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/**
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Copy Length bytes from Source to Destination.
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@param Destination Target of copy
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@param Source Place to copy from
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@param Length 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 Memory to set.
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@param Size Number of bytes to set
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@param Value 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 Pointer to the target buffer to fill.
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@param Length Number of bytes in Buffer to fill.
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@param Value 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 Pointer to the target buffer to fill.
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@param Length Number of bytes in Buffer to fill.
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@param Value 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 Pointer to the target buffer to fill.
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@param Length Number of bytes in Buffer to fill.
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@param Value 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 Memory to set.
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@param Size 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 First memory buffer
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@param SourceBuffer Second memory buffer
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@param Length Length of DestinationBuffer and SourceBuffer memory
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regions to compare. Must be non-zero.
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@retval 0 if MemOne == MemTwo
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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 Pointer to the target buffer to scan.
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@param Length Number of bytes in Buffer to scan. Must be non-zero.
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@param Value Value to search for in the target buffer.
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@return 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 Pointer to the target buffer to scan.
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@param Length Number of bytes in Buffer to scan. Must be non-zero.
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@param Value Value to search for in the target buffer.
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@return 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 Pointer to the target buffer to scan.
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@param Length Number of bytes in Buffer to scan. Must be non-zero.
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@param Value Value to search for in the target buffer.
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@return 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 Pointer to the target buffer to scan.
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@param Length Number of bytes in Buffer to scan. Must be non-zero.
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@param Value Value to search for in the target buffer.
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@return 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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Copy Length bytes from Source to Destination.
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This function copies Length bytes from SourceBuffer to DestinationBuffer, and
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returns DestinationBuffer. The implementation must be reentrant, and it must
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handle the case where SourceBuffer overlaps DestinationBuffer.
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If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then
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ASSERT().
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If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
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@param Destination Target of copy
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@param Source Place to copy from
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@param Length 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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CopyMem (
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OUT VOID *Destination,
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IN CONST VOID *Source,
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IN UINTN Length
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)
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{
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ASSERT (Length <= MAX_ADDRESS - (UINTN)Destination + 1);
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ASSERT (Length <= MAX_ADDRESS - (UINTN)Source + 1);
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return InternalMemCopyMem (Destination, Source, Length);
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}
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/**
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Set Buffer to Value for Size bytes.
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This function fills Length bytes of Buffer with Value, and returns Buffer.
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If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
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@param Buffer Memory to set.
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@param Size Number of bytes to set
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@param Value 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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SetMem (
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IN VOID *Buffer,
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IN UINTN Size,
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IN UINT8 Value
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)
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{
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ASSERT (Size <= MAX_ADDRESS - (UINTN)Buffer + 1);
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return InternalMemSetMem (Buffer, Size, 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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This function fills Length bytes of Buffer with the 16-bit value specified by
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Value, and returns Buffer. Value is repeated every 16-bits in for Length
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bytes of Buffer.
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If Buffer is NULL and Length > 0, then ASSERT().
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If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
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If Buffer is not aligned on a 16-bit boundary, then ASSERT().
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If Length is not aligned on a 16-bit boundary, then ASSERT().
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@param Buffer Pointer to the target buffer to fill.
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@param Length Number of bytes in Buffer to fill.
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@param Value 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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SetMem16 (
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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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ASSERT (Buffer != NULL);
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ASSERT (Length <= MAX_ADDRESS - (UINTN)Buffer + 1);
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ASSERT ((((UINTN)Buffer) & 1) != 0);
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ASSERT ((Length & 1) != 0);
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if ((Length /= sizeof (Value)) == 0) {
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return Buffer;
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}
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return InternalMemSetMem16 (Buffer, Length, 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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|
|
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This function fills Length bytes of Buffer with the 32-bit value specified by
|
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|
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Value, and returns Buffer. Value is repeated every 32-bits in for Length
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|
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bytes of Buffer.
|
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|
|
|
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|
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If Buffer is NULL and Length > 0, then ASSERT().
|
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|
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If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
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If Buffer is not aligned on a 32-bit boundary, then ASSERT().
|
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If Length is not aligned on a 32-bit boundary, then ASSERT().
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|
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@param Buffer Pointer to the target buffer to fill.
|
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@param Length Number of bytes in Buffer to fill.
|
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@param Value Value with which to fill Length bytes of Buffer.
|
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|
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@return Buffer
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|
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**/
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|
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VOID *
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|
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EFIAPI
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|
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SetMem32 (
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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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ASSERT (Buffer != NULL);
|
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ASSERT (Length <= MAX_ADDRESS - (UINTN)Buffer + 1);
|
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|
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ASSERT ((((UINTN)Buffer) & 1) != 0);
|
||
|
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ASSERT ((Length & 1) != 0);
|
||
|
|
|
||
|
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if ((Length /= sizeof (Value)) == 0) {
|
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return Buffer;
|
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}
|
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return InternalMemSetMem32 (Buffer, Length, 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.
|
||
|
|
|
||
|
|
This function fills Length bytes of Buffer with the 64-bit value specified by
|
||
|
|
Value, and returns Buffer. Value is repeated every 64-bits in for Length
|
||
|
|
bytes of Buffer.
|
||
|
|
|
||
|
|
If Buffer is NULL and Length > 0, then ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
||
|
|
If Buffer is not aligned on a 64-bit boundary, then ASSERT().
|
||
|
|
If Length is not aligned on a 64-bit boundary, then ASSERT().
|
||
|
|
|
||
|
|
@param Buffer Pointer to the target buffer to fill.
|
||
|
|
@param Length Number of bytes in Buffer to fill.
|
||
|
|
@param Value Value with which to fill Length bytes of Buffer.
|
||
|
|
|
||
|
|
@return Buffer
|
||
|
|
|
||
|
|
**/
|
||
|
|
VOID *
|
||
|
|
EFIAPI
|
||
|
|
SetMem64 (
|
||
|
|
OUT VOID *Buffer,
|
||
|
|
IN UINTN Length,
|
||
|
|
IN UINT64 Value
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ASSERT (Buffer != NULL);
|
||
|
|
ASSERT (Length <= MAX_ADDRESS - (UINTN)Buffer + 1);
|
||
|
|
ASSERT ((((UINTN)Buffer) & 1) != 0);
|
||
|
|
ASSERT ((Length & 1) != 0);
|
||
|
|
|
||
|
|
if ((Length /= sizeof (Value)) == 0) {
|
||
|
|
return Buffer;
|
||
|
|
}
|
||
|
|
return InternalMemSetMem64 (Buffer, Length, Value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Set Buffer to 0 for Size bytes.
|
||
|
|
|
||
|
|
This function fills Length bytes of Buffer with zeros, and returns Buffer.
|
||
|
|
|
||
|
|
If Buffer is NULL and Length > 0, then ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
||
|
|
|
||
|
|
@param Buffer Memory to set.
|
||
|
|
@param Size Number of bytes to set
|
||
|
|
|
||
|
|
@return Buffer
|
||
|
|
|
||
|
|
**/
|
||
|
|
VOID *
|
||
|
|
EFIAPI
|
||
|
|
ZeroMem (
|
||
|
|
IN VOID *Buffer,
|
||
|
|
IN UINTN Size
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ASSERT (Buffer != NULL);
|
||
|
|
return InternalMemSetMem (Buffer, Size, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Compares two memory buffers of a given length.
|
||
|
|
|
||
|
|
This function compares Length bytes of SourceBuffer to Length bytes of
|
||
|
|
DestinationBuffer. If all Length bytes of the two buffers are identical, then
|
||
|
|
0 is returned. Otherwise, the value returned is the first mismatched byte in
|
||
|
|
SourceBuffer subtracted from the first mismatched byte in DestinationBuffer.
|
||
|
|
|
||
|
|
If DestinationBuffer is NULL and Length > 0, then ASSERT().
|
||
|
|
If SourceBuffer is NULL and Length > 0, then ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then
|
||
|
|
ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
|
||
|
|
|
||
|
|
@param DestinationBuffer First memory buffer
|
||
|
|
@param SourceBuffer Second memory buffer
|
||
|
|
@param Length Length of DestinationBuffer and SourceBuffer memory
|
||
|
|
regions to compare
|
||
|
|
|
||
|
|
@retval 0 if DestinationBuffer == SourceBuffer
|
||
|
|
@retval Non-zero if DestinationBuffer != SourceBuffer
|
||
|
|
|
||
|
|
**/
|
||
|
|
INTN
|
||
|
|
EFIAPI
|
||
|
|
CompareMem (
|
||
|
|
IN CONST VOID *DestinationBuffer,
|
||
|
|
IN CONST VOID *SourceBuffer,
|
||
|
|
IN UINTN Length
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ASSERT (DestinationBuffer != NULL);
|
||
|
|
ASSERT (SourceBuffer != NULL);
|
||
|
|
ASSERT (Length <= MAX_ADDRESS - (UINTN)DestinationBuffer + 1);
|
||
|
|
ASSERT (Length <= MAX_ADDRESS - (UINTN)SourceBuffer + 1);
|
||
|
|
if (Length == 0) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return InternalMemCompareMem (DestinationBuffer, SourceBuffer, Length);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Scans a target buffer for an 8-bit value, and returns a pointer to the
|
||
|
|
matching 8-bit value in the target buffer.
|
||
|
|
|
||
|
|
This function searches target the buffer specified by Buffer and Length from
|
||
|
|
the lowest address to the highest address for an 8-bit value that matches
|
||
|
|
Value. If a match is found, then a pointer to the matching byte in the target
|
||
|
|
buffer is returned. If no match is found, then NULL is returned. If Length is
|
||
|
|
0, then NULL is returned.
|
||
|
|
|
||
|
|
If Buffer is NULL, then ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
||
|
|
|
||
|
|
@param Buffer Pointer to the target buffer to scan.
|
||
|
|
@param Length Number of bytes in Buffer to scan.
|
||
|
|
@param Value Value to search for in the target buffer.
|
||
|
|
|
||
|
|
@return Pointer to the first occurrence or NULL if not found.
|
||
|
|
@retval NULL if Length == 0 or Value was not found.
|
||
|
|
|
||
|
|
**/
|
||
|
|
VOID *
|
||
|
|
EFIAPI
|
||
|
|
ScanMem8 (
|
||
|
|
IN CONST VOID *Buffer,
|
||
|
|
IN UINTN Length,
|
||
|
|
IN UINT8 Value
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ASSERT (Buffer != NULL);
|
||
|
|
ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);
|
||
|
|
|
||
|
|
if ((Length /= sizeof (Value)) == 0) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
return (VOID*)InternalMemScanMem8 (Buffer, Length, Value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Scans a target buffer for a 16-bit value, and returns a pointer to the
|
||
|
|
matching 16-bit value in the target buffer.
|
||
|
|
|
||
|
|
This function searches target the buffer specified by Buffer and Length from
|
||
|
|
the lowest address to the highest address at 16-bit increments for a 16-bit
|
||
|
|
value that matches Value. If a match is found, then a pointer to the matching
|
||
|
|
value in the target buffer is returned. If no match is found, then NULL is
|
||
|
|
returned. If Length is 0, then NULL is returned.
|
||
|
|
|
||
|
|
If Buffer is NULL, then ASSERT().
|
||
|
|
If Buffer is not aligned on a 16-bit boundary, then ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
||
|
|
|
||
|
|
@param Buffer Pointer to the target buffer to scan.
|
||
|
|
@param Length Number of bytes in Buffer to scan.
|
||
|
|
@param Value Value to search for in the target buffer.
|
||
|
|
|
||
|
|
@return Pointer to the first occurrence.
|
||
|
|
@retval NULL if Length == 0 or Value was not found.
|
||
|
|
|
||
|
|
**/
|
||
|
|
VOID *
|
||
|
|
EFIAPI
|
||
|
|
ScanMem16 (
|
||
|
|
IN CONST VOID *Buffer,
|
||
|
|
IN UINTN Length,
|
||
|
|
IN UINT16 Value
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ASSERT (Buffer != NULL);
|
||
|
|
ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);
|
||
|
|
ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);
|
||
|
|
|
||
|
|
if ((Length /= sizeof (Value)) == 0) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
return (VOID*)InternalMemScanMem16 (Buffer, Length, Value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Scans a target buffer for a 32-bit value, and returns a pointer to the
|
||
|
|
matching 32-bit value in the target buffer.
|
||
|
|
|
||
|
|
This function searches target the buffer specified by Buffer and Length from
|
||
|
|
the lowest address to the highest address at 32-bit increments for a 32-bit
|
||
|
|
value that matches Value. If a match is found, then a pointer to the matching
|
||
|
|
value in the target buffer is returned. If no match is found, then NULL is
|
||
|
|
returned. If Length is 0, then NULL is returned.
|
||
|
|
|
||
|
|
If Buffer is NULL, then ASSERT().
|
||
|
|
If Buffer is not aligned on a 32-bit boundary, then ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
||
|
|
|
||
|
|
@param Buffer Pointer to the target buffer to scan.
|
||
|
|
@param Length Number of bytes in Buffer to scan.
|
||
|
|
@param Value Value to search for in the target buffer.
|
||
|
|
|
||
|
|
@return Pointer to the first occurrence or NULL if not found.
|
||
|
|
@retval NULL if Length == 0 or Value was not found.
|
||
|
|
|
||
|
|
**/
|
||
|
|
VOID *
|
||
|
|
EFIAPI
|
||
|
|
ScanMem32 (
|
||
|
|
IN CONST VOID *Buffer,
|
||
|
|
IN UINTN Length,
|
||
|
|
IN UINT32 Value
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ASSERT (Buffer != NULL);
|
||
|
|
ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);
|
||
|
|
ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);
|
||
|
|
|
||
|
|
if ((Length /= sizeof (Value)) == 0) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
return (VOID*)InternalMemScanMem32 (Buffer, Length, Value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Scans a target buffer for a 64-bit value, and returns a pointer to the
|
||
|
|
matching 64-bit value in the target buffer.
|
||
|
|
|
||
|
|
This function searches target the buffer specified by Buffer and Length from
|
||
|
|
the lowest address to the highest address at 64-bit increments for a 64-bit
|
||
|
|
value that matches Value. If a match is found, then a pointer to the matching
|
||
|
|
value in the target buffer is returned. If no match is found, then NULL is
|
||
|
|
returned. If Length is 0, then NULL is returned.
|
||
|
|
|
||
|
|
If Buffer is NULL, then ASSERT().
|
||
|
|
If Buffer is not aligned on a 64-bit boundary, then ASSERT().
|
||
|
|
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
||
|
|
|
||
|
|
@param Buffer Pointer to the target buffer to scan.
|
||
|
|
@param Length Number of bytes in Buffer to scan.
|
||
|
|
@param Value Value to search for in the target buffer.
|
||
|
|
|
||
|
|
@return Pointer to the first occurrence or NULL if not found.
|
||
|
|
@retval NULL if Length == 0 or Value was not found.
|
||
|
|
|
||
|
|
**/
|
||
|
|
VOID *
|
||
|
|
EFIAPI
|
||
|
|
ScanMem64 (
|
||
|
|
IN CONST VOID *Buffer,
|
||
|
|
IN UINTN Length,
|
||
|
|
IN UINT64 Value
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ASSERT (Buffer != NULL);
|
||
|
|
ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);
|
||
|
|
ASSERT (Length <= MAX_ADDRESS + (UINTN)Buffer + 1);
|
||
|
|
|
||
|
|
if ((Length /= sizeof (Value)) == 0) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
return (VOID*)InternalMemScanMem64 (Buffer, Length, Value);
|
||
|
|
}
|