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📁 有关ecos2。0介绍了实时嵌入式的结构以及线程调度的实现和内存的管理等
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<!-- Copyright (C) 2003 Red Hat, Inc.                                --><!-- This material may be distributed only subject to the terms      --><!-- and conditions set forth in the Open Publication License, v1.0  --><!-- or later (the latest version is presently available at          --><!-- http://www.opencontent.org/openpub/).                           --><!-- Distribution of the work or derivative of the work in any       --><!-- standard (paper) book form is prohibited unless prior           --><!-- permission is obtained from the copyright holder.               --><HTML><HEAD><TITLE>GNU General Public License</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos User Guide"HREF="ecos-user-guide.html"><LINKREL="UP"TITLE="Appendixes"HREF="appendices.html"><LINKREL="PREVIOUS"TITLE="Board: NEC V850 Cosmo Evaluation Board"HREF="rt-v850-cebsb1.html"></HEAD><BODYCLASS="APPENDIX"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">eCos User Guide</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="rt-v850-cebsb1.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom">&nbsp;</TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="APPENDIX"><H1><ANAME="GNU-GENERAL-PUBLIC-LICENSE">Appendix C. GNU General Public License</H1><PCLASS="LITERALLAYOUT">&nbsp;Copyright&nbsp;(C)&nbsp;1989,&nbsp;1991&nbsp;Free&nbsp;Software&nbsp;Foundation,&nbsp;Inc.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59&nbsp;Temple&nbsp;Place,&nbsp;Suite&nbsp;330,&nbsp;Boston,&nbsp;MA&nbsp;&nbsp;02111-1307&nbsp;&nbsp;USA<br>&nbsp;Everyone&nbsp;is&nbsp;permitted&nbsp;to&nbsp;copy&nbsp;and&nbsp;distribute&nbsp;verbatim&nbsp;copies<br>&nbsp;of&nbsp;this&nbsp;license&nbsp;document,&nbsp;but&nbsp;changing&nbsp;it&nbsp;is&nbsp;not&nbsp;allowed.<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Preamble<br><br>&nbsp;&nbsp;The&nbsp;licenses&nbsp;for&nbsp;most&nbsp;software&nbsp;are&nbsp;designed&nbsp;to&nbsp;take&nbsp;away&nbsp;your<br>freedom&nbsp;to&nbsp;share&nbsp;and&nbsp;change&nbsp;it.&nbsp;&nbsp;By&nbsp;contrast,&nbsp;the&nbsp;GNU&nbsp;General&nbsp;Public<br>License&nbsp;is&nbsp;intended&nbsp;to&nbsp;guarantee&nbsp;your&nbsp;freedom&nbsp;to&nbsp;share&nbsp;and&nbsp;change&nbsp;free<br>software--to&nbsp;make&nbsp;sure&nbsp;the&nbsp;software&nbsp;is&nbsp;free&nbsp;for&nbsp;all&nbsp;its&nbsp;users.&nbsp;&nbsp;This<br>General&nbsp;Public&nbsp;License&nbsp;applies&nbsp;to&nbsp;most&nbsp;of&nbsp;the&nbsp;Free&nbsp;Software<br>Foundation's&nbsp;software&nbsp;and&nbsp;to&nbsp;any&nbsp;other&nbsp;program&nbsp;whose&nbsp;authors&nbsp;commit&nbsp;to<br>using&nbsp;it.&nbsp;&nbsp;(Some&nbsp;other&nbsp;Free&nbsp;Software&nbsp;Foundation&nbsp;software&nbsp;is&nbsp;covered&nbsp;by<br>the&nbsp;GNU&nbsp;Library&nbsp;General&nbsp;Public&nbsp;License&nbsp;instead.)&nbsp;&nbsp;You&nbsp;can&nbsp;apply&nbsp;it&nbsp;to<br>your&nbsp;programs,&nbsp;too.<br><br>&nbsp;&nbsp;When&nbsp;we&nbsp;speak&nbsp;of&nbsp;free&nbsp;software,&nbsp;we&nbsp;are&nbsp;referring&nbsp;to&nbsp;freedom,&nbsp;not<br>price.&nbsp;&nbsp;Our&nbsp;General&nbsp;Public&nbsp;Licenses&nbsp;are&nbsp;designed&nbsp;to&nbsp;make&nbsp;sure&nbsp;that&nbsp;you<br>have&nbsp;the&nbsp;freedom&nbsp;to&nbsp;distribute&nbsp;copies&nbsp;of&nbsp;free&nbsp;software&nbsp;(and&nbsp;charge&nbsp;for<br>this&nbsp;service&nbsp;if&nbsp;you&nbsp;wish),&nbsp;that&nbsp;you&nbsp;receive&nbsp;source&nbsp;code&nbsp;or&nbsp;can&nbsp;get&nbsp;it<br>if&nbsp;you&nbsp;want&nbsp;it,&nbsp;that&nbsp;you&nbsp;can&nbsp;change&nbsp;the&nbsp;software&nbsp;or&nbsp;use&nbsp;pieces&nbsp;of&nbsp;it<br>in&nbsp;new&nbsp;free&nbsp;programs;&nbsp;and&nbsp;that&nbsp;you&nbsp;know&nbsp;you&nbsp;can&nbsp;do&nbsp;these&nbsp;things.<br><br>&nbsp;&nbsp;To&nbsp;protect&nbsp;your&nbsp;rights,&nbsp;we&nbsp;need&nbsp;to&nbsp;make&nbsp;restrictions&nbsp;that&nbsp;forbid<br>anyone&nbsp;to&nbsp;deny&nbsp;you&nbsp;these&nbsp;rights&nbsp;or&nbsp;to&nbsp;ask&nbsp;you&nbsp;to&nbsp;surrender&nbsp;the&nbsp;rights.<br>These&nbsp;restrictions&nbsp;translate&nbsp;to&nbsp;certain&nbsp;responsibilities&nbsp;for&nbsp;you&nbsp;if&nbsp;you<br>distribute&nbsp;copies&nbsp;of&nbsp;the&nbsp;software,&nbsp;or&nbsp;if&nbsp;you&nbsp;modify&nbsp;it.<br><br>&nbsp;&nbsp;For&nbsp;example,&nbsp;if&nbsp;you&nbsp;distribute&nbsp;copies&nbsp;of&nbsp;such&nbsp;a&nbsp;program,&nbsp;whether<br>gratis&nbsp;or&nbsp;for&nbsp;a&nbsp;fee,&nbsp;you&nbsp;must&nbsp;give&nbsp;the&nbsp;recipients&nbsp;all&nbsp;the&nbsp;rights&nbsp;that<br>you&nbsp;have.&nbsp;&nbsp;You&nbsp;must&nbsp;make&nbsp;sure&nbsp;that&nbsp;they,&nbsp;too,&nbsp;receive&nbsp;or&nbsp;can&nbsp;get&nbsp;the<br>source&nbsp;code.&nbsp;&nbsp;And&nbsp;you&nbsp;must&nbsp;show&nbsp;them&nbsp;these&nbsp;terms&nbsp;so&nbsp;they&nbsp;know&nbsp;their<br>rights.<br><br>&nbsp;&nbsp;We&nbsp;protect&nbsp;your&nbsp;rights&nbsp;with&nbsp;two&nbsp;steps:&nbsp;(1)&nbsp;copyright&nbsp;the&nbsp;software,&nbsp;and<br>(2)&nbsp;offer&nbsp;you&nbsp;this&nbsp;license&nbsp;which&nbsp;gives&nbsp;you&nbsp;legal&nbsp;permission&nbsp;to&nbsp;copy,<br>distribute&nbsp;and/or&nbsp;modify&nbsp;the&nbsp;software.<br><br>&nbsp;&nbsp;Also,&nbsp;for&nbsp;each&nbsp;author's&nbsp;protection&nbsp;and&nbsp;ours,&nbsp;we&nbsp;want&nbsp;to&nbsp;make&nbsp;certain<br>that&nbsp;everyone&nbsp;understands&nbsp;that&nbsp;there&nbsp;is&nbsp;no&nbsp;warranty&nbsp;for&nbsp;this&nbsp;free<br>software.&nbsp;&nbsp;If&nbsp;the&nbsp;software&nbsp;is&nbsp;modified&nbsp;by&nbsp;someone&nbsp;else&nbsp;and&nbsp;passed&nbsp;on,&nbsp;we<br>want&nbsp;its&nbsp;recipients&nbsp;to&nbsp;know&nbsp;that&nbsp;what&nbsp;they&nbsp;have&nbsp;is&nbsp;not&nbsp;the&nbsp;original,&nbsp;so<br>that&nbsp;any&nbsp;problems&nbsp;introduced&nbsp;by&nbsp;others&nbsp;will&nbsp;not&nbsp;reflect&nbsp;on&nbsp;the&nbsp;original<br>authors'&nbsp;reputations.<br><br>&nbsp;&nbsp;Finally,&nbsp;any&nbsp;free&nbsp;program&nbsp;is&nbsp;threatened&nbsp;constantly&nbsp;by&nbsp;software<br>patents.&nbsp;&nbsp;We&nbsp;wish&nbsp;to&nbsp;avoid&nbsp;the&nbsp;danger&nbsp;that&nbsp;redistributors&nbsp;of&nbsp;a&nbsp;free<br>program&nbsp;will&nbsp;individually&nbsp;obtain&nbsp;patent&nbsp;licenses,&nbsp;in&nbsp;effect&nbsp;making&nbsp;the<br>program&nbsp;proprietary.&nbsp;&nbsp;To&nbsp;prevent&nbsp;this,&nbsp;we&nbsp;have&nbsp;made&nbsp;it&nbsp;clear&nbsp;that&nbsp;any<br>patent&nbsp;must&nbsp;be&nbsp;licensed&nbsp;for&nbsp;everyone's&nbsp;free&nbsp;use&nbsp;or&nbsp;not&nbsp;licensed&nbsp;at&nbsp;all.<br><br>&nbsp;&nbsp;The&nbsp;precise&nbsp;terms&nbsp;and&nbsp;conditions&nbsp;for&nbsp;copying,&nbsp;distribution&nbsp;and<br>modification&nbsp;follow.<br><br>		&nbsp;&nbsp;&nbsp;&nbsp;GNU&nbsp;GENERAL&nbsp;PUBLIC&nbsp;LICENSE<br>&nbsp;&nbsp;&nbsp;TERMS&nbsp;AND&nbsp;CONDITIONS&nbsp;FOR&nbsp;COPYING,&nbsp;DISTRIBUTION&nbsp;AND&nbsp;MODIFICATION<br><br>&nbsp;&nbsp;0.&nbsp;This&nbsp;License&nbsp;applies&nbsp;to&nbsp;any&nbsp;program&nbsp;or&nbsp;other&nbsp;work&nbsp;which&nbsp;contains<br>a&nbsp;notice&nbsp;placed&nbsp;by&nbsp;the&nbsp;copyright&nbsp;holder&nbsp;saying&nbsp;it&nbsp;may&nbsp;be&nbsp;distributed<br>under&nbsp;the&nbsp;terms&nbsp;of&nbsp;this&nbsp;General&nbsp;Public&nbsp;License.&nbsp;&nbsp;The&nbsp;"Program",&nbsp;below,<br>refers&nbsp;to&nbsp;any&nbsp;such&nbsp;program&nbsp;or&nbsp;work,&nbsp;and&nbsp;a&nbsp;"work&nbsp;based&nbsp;on&nbsp;the&nbsp;Program"<br>means&nbsp;either&nbsp;the&nbsp;Program&nbsp;or&nbsp;any&nbsp;derivative&nbsp;work&nbsp;under&nbsp;copyright&nbsp;law:<br>that&nbsp;is&nbsp;to&nbsp;say,&nbsp;a&nbsp;work&nbsp;containing&nbsp;the&nbsp;Program&nbsp;or&nbsp;a&nbsp;portion&nbsp;of&nbsp;it,<br>either&nbsp;verbatim&nbsp;or&nbsp;with&nbsp;modifications&nbsp;and/or&nbsp;translated&nbsp;into&nbsp;another<br>language.&nbsp;&nbsp;(Hereinafter,&nbsp;translation&nbsp;is&nbsp;included&nbsp;without&nbsp;limitation&nbsp;in<br>the&nbsp;term&nbsp;"modification".)&nbsp;&nbsp;Each&nbsp;licensee&nbsp;is&nbsp;addressed&nbsp;as&nbsp;"you".<br><br>Activities&nbsp;other&nbsp;than&nbsp;copying,&nbsp;distribution&nbsp;and&nbsp;modification&nbsp;are&nbsp;not<br>covered&nbsp;by&nbsp;this&nbsp;License;&nbsp;they&nbsp;are&nbsp;outside&nbsp;its&nbsp;scope.&nbsp;&nbsp;The&nbsp;act&nbsp;of<br>running&nbsp;the&nbsp;Program&nbsp;is&nbsp;not&nbsp;restricted,&nbsp;and&nbsp;the&nbsp;output&nbsp;from&nbsp;the&nbsp;Program<br>is&nbsp;covered&nbsp;only&nbsp;if&nbsp;its&nbsp;contents&nbsp;constitute&nbsp;a&nbsp;work&nbsp;based&nbsp;on&nbsp;the<br>Program&nbsp;(independent&nbsp;of&nbsp;having&nbsp;been&nbsp;made&nbsp;by&nbsp;running&nbsp;the&nbsp;Program).<br>Whether&nbsp;that&nbsp;is&nbsp;true&nbsp;depends&nbsp;on&nbsp;what&nbsp;the&nbsp;Program&nbsp;does.<br><br>&nbsp;&nbsp;1.&nbsp;You&nbsp;may&nbsp;copy&nbsp;and&nbsp;distribute&nbsp;verbatim&nbsp;copies&nbsp;of&nbsp;the&nbsp;Program's<br>source&nbsp;code&nbsp;as&nbsp;you&nbsp;receive&nbsp;it,&nbsp;in&nbsp;any&nbsp;medium,&nbsp;provided&nbsp;that&nbsp;you<br>conspicuously&nbsp;and&nbsp;appropriately&nbsp;publish&nbsp;on&nbsp;each&nbsp;copy&nbsp;an&nbsp;appropriate<br>copyright&nbsp;notice&nbsp;and&nbsp;disclaimer&nbsp;of&nbsp;warranty;&nbsp;keep&nbsp;intact&nbsp;all&nbsp;the<br>notices&nbsp;that&nbsp;refer&nbsp;to&nbsp;this&nbsp;License&nbsp;and&nbsp;to&nbsp;the&nbsp;absence&nbsp;of&nbsp;any&nbsp;warranty;<br>and&nbsp;give&nbsp;any&nbsp;other&nbsp;recipients&nbsp;of&nbsp;the&nbsp;Program&nbsp;a&nbsp;copy&nbsp;of&nbsp;this&nbsp;License<br>
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