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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>dump</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="disks"HREF="disks-command.html"><LINKREL="NEXT"TITLE="help"HREF="help-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="disks-command.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="help-command.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><H1><ANAME="DUMP-COMMAND">dump</H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN3226"></A><H2>Name</H2>dump -- Display memory.</DIV><DIVCLASS="REFSYNOPSISDIV"><ANAME="AEN3229"><H2>Synopsis</H2><P><BCLASS="COMMAND">dump</B> {-b <TTCLASS="REPLACEABLE"><I>location</I></TT>} [-l <TTCLASS="REPLACEABLE"><I>length</I></TT>] [-s] [-1 | -2 | -4]</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN3241"></A><H2>Arguments</H2><DIVCLASS="INFORMALTABLE"><ANAME="AEN3243"><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">-b <TTCLASS="REPLACEABLE"><I>location</I></TT></TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Memory address</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Location in memory 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">32</TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-s</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Boolean</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Format data using Motorola S-records.</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP"> </TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-1</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP"> </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">-1</TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-2</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP"> </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">-1</TD></TR><TR><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-4</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP"> </TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">Access one word (32 bits) at a time.</TD><TDWIDTH="25%"ALIGN="LEFT"VALIGN="TOP">-1</TD></TR></TBODY></TABLE><P></P></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN3289"></A><H2>Description</H2><P>Display a range of memory on the system console.</P><P>The <BCLASS="COMMAND">x</B> is a synonym for <BCLASS="COMMAND">dump</B>.</P><P>Note that this command couldbe detrimental if used on memory mapped hardware registers. </P><P>The memory is displayed at most sixteen bytes per line, first as theraw hex value, followed by an ASCII interpretation of the data. </P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN3297"></A><H2>Examples</H2><P>Display a buffer, one byte at a time.<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN"> RedBoot> <TTCLASS="USERINPUT"><B>mfill -b 0x100000 -l 0x20 -p 0xDEADFACE</B></TT>RedBoot> <TTCLASS="USERINPUT"><B>x -b 0x100000</B></TT>00100000: CE FA AD DE CE FA AD DE CE FA AD DE CE FA AD DE |................|00100010: CE FA AD DE CE FA AD DE CE FA AD DE CE FA AD DE |................|</PRE></TD></TR></TABLE> </P><P>Display a buffer, one short (16 bit) word at a time. Note in this case thatthe ASCII interpretation is suppressed.<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN"> RedBoot> <TTCLASS="USERINPUT"><B>dump -b 0x100000 -2</B></TT>00100000: FACE DEAD FACE DEAD FACE DEAD FACE DEAD 00100010: FACE DEAD FACE DEAD FACE DEAD FACE DEAD </PRE></TD></TR></TABLE> </P><P>Display a buffer, one word (32 bit) word at a time. Note in this case thatthe ASCII interpretation is suppressed.<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN"> RedBoot> <TTCLASS="USERINPUT"><B>dump -b 0x100000 -4</B></TT>00100000: DEADFACE DEADFACE DEADFACE DEADFACE 00100010: DEADFACE DEADFACE DEADFACE DEADFACE </PRE></TD></TR></TABLE> </P><P>Display the same buffer, using Motorola S-record format.<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN"> RedBoot> <TTCLASS="USERINPUT"><B>dump -b 0x100000 -s</B></TT>S31500100000CEFAADDECEFAADDECEFAADDECEFAADDE8ES31500100010CEFAADDECEFAADDECEFAADDECEFAADDE7E</PRE></TD></TR></TABLE> </P><P>Display a buffer, with visible ASCII strings.<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN"> RedBoot> <TTCLASS="USERINPUT"><B>d -b 0xfe00b000 -l 0x80</B></TT>0xFE00B000: 20 25 70 0A 00 00 00 00 41 74 74 65 6D 70 74 20 | %p.....Attempt |0xFE00B010: 74 6F 20 6C 6F 61 64 20 53 2D 72 65 63 6F 72 64 |to load S-record|0xFE00B020: 20 64 61 74 61 20 74 6F 20 61 64 64 72 65 73 73 | data to address|0xFE00B030: 3A 20 25 70 20 5B 6E 6F 74 20 69 6E 20 52 41 4D |: %p [not in RAM|0xFE00B040: 5D 0A 00 00 2A 2A 2A 20 57 61 72 6E 69 6E 67 21 |]...*** Warning!|0xFE00B050: 20 43 68 65 63 6B 73 75 6D 20 66 61 69 6C 75 72 | Checksum failur|0xFE00B060: 65 20 2D 20 41 64 64 72 3A 20 25 6C 78 2C 20 25 |e - Addr: %lx, %|0xFE00B070: 30 32 6C 58 20 3C 3E 20 25 30 32 6C 58 0A 00 00 |02lX <> %02lX...|0xFE00B080: 45 6E 74 72 79 20 70 6F 69 6E 74 3A 20 25 70 2C |Entry point: %p,|</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="disks-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="help-command.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">disks</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="common-commands.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">help</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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