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Transition FileX to Eclipse Fundation

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TiejunZhou
2024-01-02 07:35:14 +00:00
commit 14884808b5
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common/src/fx_utility_64_unsigned_read.c
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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** FileX Component */
/** */
/** Utility */
/** */
/**************************************************************************/
/**************************************************************************/
#define FX_SOURCE_CODE
/* Include necessary system files. */
#include "fx_api.h"
#include "fx_system.h"
#include "fx_utility.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _fx_utility_64_unsigned_read PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function reads (with endian awareness) a 64-bit unsigned data */
/* from the specified source and returns the value to the caller. */
/* */
/* INPUT */
/* */
/* source_ptr Source memory pointer */
/* */
/* OUTPUT */
/* */
/* ULONG64 value */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* FileX System Functions */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
/* 09-30-2020 William E. Lamie Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
ULONG64 _fx_utility_64_unsigned_read(UCHAR *source_ptr)
{
ULONG64 value;
ULONG upper_portion;
ULONG lower_portion;
lower_portion = _fx_utility_32_unsigned_read(source_ptr);
upper_portion = _fx_utility_32_unsigned_read(source_ptr + sizeof(ULONG));
value = ((ULONG64)upper_portion) << 32;
value |= (ULONG64)lower_portion;
/* Return 64-bit value to caller. */
return(value);
}