/** @file ScanMem64() implementation. The following BaseMemoryLib instances contain the same copy of this file: BaseMemoryLib BaseMemoryLibMmx BaseMemoryLibSse2 BaseMemoryLibRepStr BaseMemoryLibOptDxe BaseMemoryLibOptPei PeiMemoryLib UefiMemoryLib Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> SPDX-License-Identifier: BSD-2-Clause-Patent **/ #include "MemLibInternals.h" /** 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 the target buffer specified by Buffer and Length from the lowest address to the highest address for a 64-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 Length > 0 and Buffer is NULL, 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(). If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). @param Buffer The pointer to the target buffer to scan. @param Length The number of bytes in Buffer to scan. @param Value The value to search for in the target buffer. @return A pointer to the matching byte in the target buffer or NULL otherwise. **/ VOID * EFIAPI ScanMem64 ( IN CONST VOID *Buffer, IN UINTN Length, IN UINT64 Value ) { if (Length == 0) { return NULL; } ASSERT (Buffer != NULL); ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0); ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer)); ASSERT ((Length & (sizeof (Value) - 1)) == 0); return (VOID *)InternalMemScanMem64 (Buffer, Length / sizeof (Value), Value); }