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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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/** USBX 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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/* Include necessary system files. */ |
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#define UX_SOURCE_CODE |
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#include "ux_api.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_utility_long_put_big_endian PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function writes a 32-bit value in big endian format. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* address Destination address */ |
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/* value 32-bit value */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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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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/* USBX Components */ |
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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 Chaoqiong Xiao Initial Version 6.0 */ |
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/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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VOID _ux_utility_long_put_big_endian(UCHAR * address, ULONG value) |
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{ |
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ULONG low_word_value; |
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ULONG high_word_value; |
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/* First we swap the value words. */ |
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low_word_value = value >> 16; |
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high_word_value = value << 16; |
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value = high_word_value | low_word_value; |
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/* In order to make this function endian agnostic and memory alignment |
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independent, we write a byte at a time from the address. */ |
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*address++ = (UCHAR) ((value >> 8) & 0xff); |
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*address++ = (UCHAR) (value & 0xff); |
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*address++ = (UCHAR) ((value >> 24 ) & 0xff); |
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*address = (UCHAR) ((value >> 16) & 0xff); |
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/* Return to caller. */ |
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return; |
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} |
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