1fef058f4b
1. Remove .intel_syntax directives in GCC assembly files. All these assembly files have been updated to use the preferred syntax for GAS 2. Correct the incorrect comments for internal worker functions for SetMemXX() and ScanMemXX(). The Length parameter is actually the counter of 16-bit, 32-bit or 64-bit value. 3. Simplify the logic in ZeroMemoryWrapper.c for BaseMemoryLibOptPei instance to remove the conditional statement for zero length. This logic is already covered by worker function InternalMemZeroMem(). 4. Cleanup all the Wrapper C files in BaseMemoryLib instances. They are supposed to be shared by all these 8 BaseMemoryLib instances, but are out-of-sync after some maintenance. This patch re-syncs them and makes them exactly the same. 5. Cleanup MemLibInternal.h so that it is shared by 6 BaseMemoryLib instance except for PeiMemoryLib and UefiMemoryLib. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9041 6f19259b-4bc3-4df7-8a09-765794883524
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/** @file
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ScanMem64() implementation.
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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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PeiMemoryLib
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UefiMemoryLib
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Copyright (c) 2006 - 2009, 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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**/
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#include "MemLibInternals.h"
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/**
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Scans a target buffer for a 64-bit value, and returns a pointer to the matching 64-bit value
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in the target buffer.
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This function searches target the buffer specified by Buffer and Length from the lowest
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address to the highest address for a 64-bit value that matches Value. If a match is found,
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then a pointer to the matching byte in the target buffer is returned. If no match is found,
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then NULL is returned. If Length is 0, then NULL is returned.
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If Length > 0 and Buffer is NULL, then ASSERT().
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If Buffer is not aligned on a 64-bit boundary, then ASSERT().
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If Length is not aligned on a 64-bit boundary, then ASSERT().
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If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
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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.
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@param Value Value to search for in the target buffer.
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@return A pointer to the matching byte in the target buffer or NULL otherwise.
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**/
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VOID *
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EFIAPI
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ScanMem64 (
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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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if (Length == 0) {
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return NULL;
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}
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ASSERT (Buffer != NULL);
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ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);
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ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
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ASSERT ((Length & (sizeof (Value) - 1)) == 0);
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return (VOID*)InternalMemScanMem64 (Buffer, Length / sizeof (Value), Value);
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}
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