51 lines
3.4 KiB
HTML
51 lines
3.4 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="task" />
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<meta name="DC.Title" content="Use instruction stepping" />
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<meta name="abstract" content="You can step through the instructions of a program by using the Start Debug (STRDBG) or Change Debug (CHGDBG) commands." />
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<meta name="description" content="You can step through the instructions of a program by using the Start Debug (STRDBG) or Change Debug (CHGDBG) commands." />
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<meta name="DC.subject" content="see='breakpoint'.trace, using breakpoint within trace, see='breakpoint program'.breakpoint, using within trace, see='trace'.breakpoint" />
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<meta name="keywords" content="see='breakpoint'.trace, using breakpoint within trace, see='breakpoint program'.breakpoint, using within trace, see='trace'.breakpoint" />
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<meta name="DC.Relation" scheme="URI" content="trace.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="instp" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Use instruction stepping</title>
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</head>
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<body id="instp"><a name="instp"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Use instruction stepping</h1>
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<div><p>You can step through the instructions of a program by using the <span class="cmdname">Start
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Debug (STRDBG)</span> or <span class="cmdname">Change Debug (CHGDBG)</span> commands.</p>
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<div class="section"> <p>When using these commands, set the MAXTRC parameter to 1 and
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the TRCFULL parameter to *STOPTRC. When you specify a trace range (<span class="cmdname">Add
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Trace (ADDTRC)</span> command) and the program processes an instruction
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within that range, a breakpoint display with an error message appears. If
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you press Enter, another breakpoint display with the same error message appears
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for the next instruction processed in the trace range. When tracing is completed,
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the trace data contains a list of the instructions traced. You can display
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this data by entering the <span class="cmdname">Display Trace Data (DSPTRCDTA)</span> command.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="trace.htm" title="A trace is the process of recording the sequence in which the statements in a program are processed.">Use traces</a></div>
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</div>
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</div>
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</body>
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</html>
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