diff options
| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
|---|---|---|
| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | 6ce4ebed87858ecdd79a1091367c6e961055daa9 (patch) | |
| tree | 1c2a6a60531acf791531bbd9c8ac14c23ef8a66c /share/doc/gdb/Trace-File-Format.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
Diffstat (limited to 'share/doc/gdb/Trace-File-Format.html')
| -rw-r--r-- | share/doc/gdb/Trace-File-Format.html | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/share/doc/gdb/Trace-File-Format.html b/share/doc/gdb/Trace-File-Format.html new file mode 100644 index 0000000..043a67a --- /dev/null +++ b/share/doc/gdb/Trace-File-Format.html @@ -0,0 +1,169 @@ +<!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: Trace File Format</title> + +<meta name="description" content="Debugging with GDB: Trace File Format"> +<meta name="keywords" content="Debugging with GDB: Trace File Format"> +<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="index.html#Top" rel="up" title="Top"> +<link href="Index-Section-Format.html#Index-Section-Format" rel="next" title="Index Section Format"> +<link href="Process-list.html#Process-list" rel="previous" title="Process list"> +<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="Trace-File-Format"></a> +<div class="header"> +<p> +Next: <a href="Index-Section-Format.html#Index-Section-Format" accesskey="n" rel="next">Index Section Format</a>, Previous: <a href="Operating-System-Information.html#Operating-System-Information" accesskey="p" rel="previous">Operating System Information</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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="Trace-File-Format-1"></a> +<h2 class="appendix">Appendix I Trace File Format</h2> +<a name="index-trace-file-format"></a> + +<p>The trace file comes in three parts: a header, a textual description +section, and a trace frame section with binary data. +</p> +<p>The header has the form <code>\x7fTRACE0\n</code>. The first byte is +<code>0x7f</code> so as to indicate that the file contains binary data, +while the <code>0</code> is a version number that may have different values +in the future. +</p> +<p>The description section consists of multiple lines of <small>ASCII</small> text +separated by newline characters (<code>0xa</code>). The lines may include a +variety of optional descriptive or context-setting information, such +as tracepoint definitions or register set size. <small>GDB</small> will +ignore any line that it does not recognize. An empty line marks the end +of this section. +</p> +<dl compact="compact"> +<dt><code>R <var>size</var></code></dt> +<dd><p>Specifies the size of a register block in bytes. This is equal to the +size of a <code>g</code> packet payload in the remote protocol. <var>size</var> +is an ascii decimal number. There should be only one such line in +a single trace file. +</p> +</dd> +<dt><code>status <var>status</var></code></dt> +<dd><p>Trace status. <var>status</var> has the same format as a <code>qTStatus</code> +remote packet reply. There should be only one such line in a single trace +file. +</p> +</dd> +<dt><code>tp <var>payload</var></code></dt> +<dd><p>Tracepoint definition. The <var>payload</var> has the same format as +<code>qTfP</code>/<code>qTsP</code> remote packet reply payload. A single tracepoint +may take multiple lines of definition, corresponding to the multiple +reply packets. +</p> +</dd> +<dt><code>tsv <var>payload</var></code></dt> +<dd><p>Trace state variable definition. The <var>payload</var> has the same format as +<code>qTfV</code>/<code>qTsV</code> remote packet reply payload. A single variable +may take multiple lines of definition, corresponding to the multiple +reply packets. +</p> +</dd> +<dt><code>tdesc <var>payload</var></code></dt> +<dd><p>Target description in XML format. The <var>payload</var> is a single line of +the XML file. All such lines should be concatenated together to get +the original XML file. This file is in the same format as <code>qXfer</code> +<code>features</code> payload, and corresponds to the main <code>target.xml</code> +file. Includes are not allowed. +</p> +</dd> +</dl> + +<p>The trace frame section consists of a number of consecutive frames. +Each frame begins with a two-byte tracepoint number, followed by a +four-byte size giving the amount of data in the frame. The data in +the frame consists of a number of blocks, each introduced by a +character indicating its type (at least register, memory, and trace +state variable). The data in this section is raw binary, not a +hexadecimal or other encoding; its endianness matches the target’s +endianness. +</p> + +<dl compact="compact"> +<dt><code>R <var>bytes</var></code></dt> +<dd><p>Register block. The number and ordering of bytes matches that of a +<code>g</code> packet in the remote protocol. Note that these are the +actual bytes, in target order, not a hexadecimal encoding. +</p> +</dd> +<dt><code>M <var>address</var> <var>length</var> <var>bytes</var>...</code></dt> +<dd><p>Memory block. This is a contiguous block of memory, at the 8-byte +address <var>address</var>, with a 2-byte length <var>length</var>, followed by +<var>length</var> bytes. +</p> +</dd> +<dt><code>V <var>number</var> <var>value</var></code></dt> +<dd><p>Trace state variable block. This records the 8-byte signed value +<var>value</var> of trace state variable numbered <var>number</var>. +</p> +</dd> +</dl> + +<p>Future enhancements of the trace file format may include additional types +of blocks. +</p> +<hr> +<div class="header"> +<p> +Next: <a href="Index-Section-Format.html#Index-Section-Format" accesskey="n" rel="next">Index Section Format</a>, Previous: <a href="Operating-System-Information.html#Operating-System-Information" accesskey="p" rel="previous">Operating System Information</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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> |