📄 mcmp-command.html

📁 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
💻 HTML
字号:
<!-- 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>mcmp</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos Reference Manual"HREF="ecos-ref.html"><LINKREL="UP"TITLE="Common Commands"HREF="common-commands.html"><LINKREL="PREVIOUS"TITLE="load"HREF="download-command.html"><LINKREL="NEXT"TITLE="mfill"HREF="mfill-command.html"></HEAD><BODYCLASS="REFENTRY"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 Reference Manual</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="download-command.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="mfill-command.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><H1><ANAME="MCMP-COMMAND">mcmp</H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN3581"></A><H2>Name</H2>mcmp&nbsp;--&nbsp;Compare two segments of memory</DIV><DIVCLASS="REFSYNOPSISDIV"><ANAME="AEN3584"><H2>Synopsis</H2><P><BCLASS="COMMAND">mcmp</B>  {-s <TTCLASS="REPLACEABLE"><I>location1</I></TT>} {-d <TTCLASS="REPLACEABLE"><I>location1</I></TT>} {-l <TTCLASS="REPLACEABLE"><I>length</I></TT>} [-1 | -2 | -4]</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN3597"></A><H2>Arguments</H2><DIVCLASS="INFORMALTABLE"><ANAME="AEN3599"><P></P><TABLEBORDER="1"CLASS="CALSTABLE"><THEAD><TR><THWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Name</TH><THWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Type</TH><THWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Description</TH><THWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Default</TH></TR></THEAD><TBODY><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-s <TTCLASS="REPLACEABLE"><I>location1</I></TT></TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Memory address</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Location for start of data.</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP"><SPANCLASS="emphasis"><ICLASS="EMPHASIS">none</I></SPAN></TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-d <TTCLASS="REPLACEABLE"><I>location2</I></TT></TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Memory address</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Location for start of data.</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP"><SPANCLASS="emphasis"><ICLASS="EMPHASIS">none</I></SPAN></TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-l <TTCLASS="REPLACEABLE"><I>length</I></TT></TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Number</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Length of data</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP"><SPANCLASS="emphasis"><ICLASS="EMPHASIS">none</I></SPAN></TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-1</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">&nbsp;</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Access one byte (8 bits) at a time.  Only the least significant 8 bits of the pattern will be used.</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-4</TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-2</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">&nbsp;</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Access two bytes (16 bits) at a time.  Only the least significant 16 bits of the pattern will be used.</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-4</TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-4</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">&nbsp;</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Access one word (32 bits) at a time.</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-4</TD></TR></TBODY></TABLE><P></P></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN3648"></A><H2>Description</H2><P>Compares the contents of two ranges of memory (RAM, ROM, FLASH, etc).</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN3651"></A><H2>Examples</H2><P>Compare two buffers which match (result is <SPANCLASS="emphasis"><ICLASS="EMPHASIS">quiet</I></SPAN>).<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN"> RedBoot&#62; <TTCLASS="USERINPUT"><B>mfill -b 0x100000 -l 0x20 -p 0xDEADFACE</B></TT>RedBoot&#62; <TTCLASS="USERINPUT"><B>mfill -b 0x200000 -l 0x20 -p 0xDEADFACE</B></TT>RedBoot&#62; <TTCLASS="USERINPUT"><B>mcmp -s 0x100000 -d 0x200000 -l 0x20</B></TT></PRE></TD></TR></TABLE> </P><P>Compare two buffers which don't match.  Only the first non-matching element is displayed.<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN"> RedBoot&#62; <TTCLASS="USERINPUT"><B>mcmp -s 0x100000 -d 0x200000 -l 0x30 -2</B></TT>Buffers don't match - 0x00100020=0x6000, 0x00200020=0x0000</PRE></TD></TR></TABLE>       </P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="download-command.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-ref.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="mfill-command.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">load</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="common-commands.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">mfill</TD></TR></TABLE></DIV></BODY></HTML>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -