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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** FileX Component */ |
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/** */ |
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/** Utility */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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#define FX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "fx_api.h" |
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#include "fx_system.h" |
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#include "fx_utility.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _fx_utility_64_unsigned_read PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* William E. Lamie, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function reads (with endian awareness) a 64-bit unsigned data */ |
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/* from the specified source and returns the value to the caller. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* source_ptr Source memory pointer */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* ULONG64 value */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* FileX System Functions */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */ |
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/* 09-30-2020 William E. Lamie Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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ULONG64 _fx_utility_64_unsigned_read(UCHAR *source_ptr) |
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{ |
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ULONG64 value; |
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ULONG upper_portion; |
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ULONG lower_portion; |
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lower_portion = _fx_utility_32_unsigned_read(source_ptr); |
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upper_portion = _fx_utility_32_unsigned_read(source_ptr + sizeof(ULONG)); |
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value = ((ULONG64)upper_portion) << 32; |
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value |= (ULONG64)lower_portion; |
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/* Return 64-bit value to caller. */ |
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return(value); |
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} |
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