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diff --git a/share/doc/gdb/tdump.html b/share/doc/gdb/tdump.html new file mode 100644 index 0000000..6247dc5 --- /dev/null +++ b/share/doc/gdb/tdump.html @@ -0,0 +1,152 @@ +<!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: tdump</title> + +<meta name="description" content="Debugging with GDB: tdump"> +<meta name="keywords" content="Debugging with GDB: tdump"> +<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="Analyze-Collected-Data.html#Analyze-Collected-Data" rel="up" title="Analyze Collected Data"> +<link href="save-tracepoints.html#save-tracepoints" rel="next" title="save tracepoints"> +<link href="tfind.html#tfind" rel="previous" title="tfind"> +<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="tdump"></a> +<div class="header"> +<p> +Next: <a href="save-tracepoints.html#save-tracepoints" accesskey="n" rel="next">save tracepoints</a>, Previous: <a href="tfind.html#tfind" accesskey="p" rel="previous">tfind</a>, Up: <a href="Analyze-Collected-Data.html#Analyze-Collected-Data" accesskey="u" rel="up">Analyze Collected Data</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="tdump-1"></a> +<h4 class="subsection">13.2.2 <code>tdump</code></h4> +<a name="index-tdump"></a> +<a name="index-dump-all-data-collected-at-tracepoint"></a> +<a name="index-tracepoint-data_002c-display"></a> + +<p>This command takes no arguments. It prints all the data collected at +the current trace snapshot. +</p> +<div class="smallexample"> +<pre class="smallexample">(gdb) <b>trace 444</b> +(gdb) <b>actions</b> +Enter actions for tracepoint #2, one per line: +> collect $regs, $locals, $args, gdb_long_test +> end + +(gdb) <b>tstart</b> + +(gdb) <b>tfind line 444</b> +#0 gdb_test (p1=0x11, p2=0x22, p3=0x33, p4=0x44, p5=0x55, p6=0x66) +at gdb_test.c:444 +444 printp( "%s: arguments = 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X\n", ) + +(gdb) <b>tdump</b> +Data collected at tracepoint 2, trace frame 1: +d0 0xc4aa0085 -995491707 +d1 0x18 24 +d2 0x80 128 +d3 0x33 51 +d4 0x71aea3d 119204413 +d5 0x22 34 +d6 0xe0 224 +d7 0x380035 3670069 +a0 0x19e24a 1696330 +a1 0x3000668 50333288 +a2 0x100 256 +a3 0x322000 3284992 +a4 0x3000698 50333336 +a5 0x1ad3cc 1758156 +fp 0x30bf3c 0x30bf3c +sp 0x30bf34 0x30bf34 +ps 0x0 0 +pc 0x20b2c8 0x20b2c8 +fpcontrol 0x0 0 +fpstatus 0x0 0 +fpiaddr 0x0 0 +p = 0x20e5b4 "gdb-test" +p1 = (void *) 0x11 +p2 = (void *) 0x22 +p3 = (void *) 0x33 +p4 = (void *) 0x44 +p5 = (void *) 0x55 +p6 = (void *) 0x66 +gdb_long_test = 17 '\021' + +(gdb) +</pre></div> + +<p><code>tdump</code> works by scanning the tracepoint’s current collection +actions and printing the value of each expression listed. So +<code>tdump</code> can fail, if after a run, you change the tracepoint’s +actions to mention variables that were not collected during the run. +</p> +<p>Also, for tracepoints with <code>while-stepping</code> loops, <code>tdump</code> +uses the collected value of <code>$pc</code> to distinguish between trace +frames that were collected at the tracepoint hit, and frames that were +collected while stepping. This allows it to correctly choose whether +to display the basic list of collections, or the collections from the +body of the while-stepping loop. However, if <code>$pc</code> was not collected, +then <code>tdump</code> will always attempt to dump using the basic collection +list, and may fail if a while-stepping frame does not include all the +same data that is collected at the tracepoint hit. +</p> +<hr> +<div class="header"> +<p> +Next: <a href="save-tracepoints.html#save-tracepoints" accesskey="n" rel="next">save tracepoints</a>, Previous: <a href="tfind.html#tfind" accesskey="p" rel="previous">tfind</a>, Up: <a href="Analyze-Collected-Data.html#Analyze-Collected-Data" accesskey="u" rel="up">Analyze Collected Data</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> + + + +</body> +</html> |