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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gdb/Tracepoint-Variables.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
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diff --git a/share/doc/gdb/Tracepoint-Variables.html b/share/doc/gdb/Tracepoint-Variables.html new file mode 100644 index 0000000..791e096 --- /dev/null +++ b/share/doc/gdb/Tracepoint-Variables.html @@ -0,0 +1,126 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Free Software" and "Free Software Needs +Free Documentation", with the Front-Cover Texts being "A GNU Manual," +and with the Back-Cover Texts as in (a) below. + +(a) The FSF's Back-Cover Text is: "You are free to copy and modify +this GNU Manual. Buying copies from GNU Press supports the FSF in +developing GNU and promoting software freedom." --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Debugging with GDB: Tracepoint Variables</title> + +<meta name="description" content="Debugging with GDB: Tracepoint Variables"> +<meta name="keywords" content="Debugging with GDB: Tracepoint Variables"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Tracepoints.html#Tracepoints" rel="up" title="Tracepoints"> +<link href="Trace-Files.html#Trace-Files" rel="next" title="Trace Files"> +<link href="save-tracepoints.html#save-tracepoints" rel="previous" title="save tracepoints"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Tracepoint-Variables"></a> +<div class="header"> +<p> +Next: <a href="Trace-Files.html#Trace-Files" accesskey="n" rel="next">Trace Files</a>, Previous: <a href="Analyze-Collected-Data.html#Analyze-Collected-Data" accesskey="p" rel="previous">Analyze Collected Data</a>, Up: <a href="Tracepoints.html#Tracepoints" accesskey="u" rel="up">Tracepoints</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Convenience-Variables-for-Tracepoints"></a> +<h3 class="section">13.3 Convenience Variables for Tracepoints</h3> +<a name="index-tracepoint-variables"></a> +<a name="index-convenience-variables-for-tracepoints"></a> + +<dl compact="compact"> +<dd><a name="index-_0024trace_005fframe"></a> +</dd> +<dt><code>(int) $trace_frame</code></dt> +<dd><p>The current trace snapshot (a.k.a. <em>frame</em>) number, or -1 if no +snapshot is selected. +</p> +<a name="index-_0024tracepoint"></a> +</dd> +<dt><code>(int) $tracepoint</code></dt> +<dd><p>The tracepoint for the current trace snapshot. +</p> +<a name="index-_0024trace_005fline"></a> +</dd> +<dt><code>(int) $trace_line</code></dt> +<dd><p>The line number for the current trace snapshot. +</p> +<a name="index-_0024trace_005ffile"></a> +</dd> +<dt><code>(char []) $trace_file</code></dt> +<dd><p>The source file for the current trace snapshot. +</p> +<a name="index-_0024trace_005ffunc"></a> +</dd> +<dt><code>(char []) $trace_func</code></dt> +<dd><p>The name of the function containing <code>$tracepoint</code>. +</p></dd> +</dl> + +<p>Note: <code>$trace_file</code> is not suitable for use in <code>printf</code>, +use <code>output</code> instead. +</p> +<p>Here’s a simple example of using these convenience variables for +stepping through all the trace snapshots and printing some of their +data. Note that these are not the same as trace state variables, +which are managed by the target. +</p> +<div class="smallexample"> +<pre class="smallexample">(gdb) <b>tfind start</b> + +(gdb) <b>while $trace_frame != -1</b> +> output $trace_file +> printf ", line %d (tracepoint #%d)\n", $trace_line, $tracepoint +> tfind +> end +</pre></div> + + + + +</body> +</html> |