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diff --git a/share/doc/gdb/OS-Information.html b/share/doc/gdb/OS-Information.html new file mode 100644 index 0000000..2689d09 --- /dev/null +++ b/share/doc/gdb/OS-Information.html @@ -0,0 +1,240 @@ +<!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: OS Information</title> + +<meta name="description" content="Debugging with GDB: OS Information"> +<meta name="keywords" content="Debugging with GDB: OS Information"> +<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="Data.html#Data" rel="up" title="Data"> +<link href="Memory-Region-Attributes.html#Memory-Region-Attributes" rel="next" title="Memory Region Attributes"> +<link href="Vector-Unit.html#Vector-Unit" rel="previous" title="Vector Unit"> +<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="OS-Information"></a> +<div class="header"> +<p> +Next: <a href="Memory-Region-Attributes.html#Memory-Region-Attributes" accesskey="n" rel="next">Memory Region Attributes</a>, Previous: <a href="Vector-Unit.html#Vector-Unit" accesskey="p" rel="previous">Vector Unit</a>, Up: <a href="Data.html#Data" accesskey="u" rel="up">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="Operating-System-Auxiliary-Information"></a> +<h3 class="section">10.17 Operating System Auxiliary Information</h3> +<a name="index-OS-information"></a> + +<p><small>GDB</small> provides interfaces to useful OS facilities that can help +you debug your program. +</p> +<a name="index-auxiliary-vector"></a> +<a name="index-vector_002c-auxiliary"></a> +<p>Some operating systems supply an <em>auxiliary vector</em> to programs at +startup. This is akin to the arguments and environment that you +specify for a program, but contains a system-dependent variety of +binary values that tell system libraries important details about the +hardware, operating system, and process. Each value’s purpose is +identified by an integer tag; the meanings are well-known but system-specific. +Depending on the configuration and operating system facilities, +<small>GDB</small> may be able to show you this information. For remote +targets, this functionality may further depend on the remote stub’s +support of the ‘<samp>qXfer:auxv:read</samp>’ packet, see +<a href="General-Query-Packets.html#qXfer-auxiliary-vector-read">qXfer auxiliary vector read</a>. +</p> +<dl compact="compact"> +<dd><a name="index-info-auxv"></a> +</dd> +<dt><code>info auxv</code></dt> +<dd><p>Display the auxiliary vector of the inferior, which can be either a +live process or a core dump file. <small>GDB</small> prints each tag value +numerically, and also shows names and text descriptions for recognized +tags. Some values in the vector are numbers, some bit masks, and some +pointers to strings or other data. <small>GDB</small> displays each value in the +most appropriate form for a recognized tag, and in hexadecimal for +an unrecognized tag. +</p></dd> +</dl> + +<p>On some targets, <small>GDB</small> can access operating system-specific +information and show it to you. The types of information available +will differ depending on the type of operating system running on the +target. The mechanism used to fetch the data is described in +<a href="Operating-System-Information.html#Operating-System-Information">Operating System Information</a>. For remote targets, this +functionality depends on the remote stub’s support of the +‘<samp>qXfer:osdata:read</samp>’ packet, see <a href="General-Query-Packets.html#qXfer-osdata-read">qXfer osdata read</a>. +</p> +<dl compact="compact"> +<dd><a name="index-info-os"></a> +</dd> +<dt><code>info os <var>infotype</var></code></dt> +<dd> +<p>Display OS information of the requested type. +</p> +<p>On <small>GNU</small>/Linux, the following values of <var>infotype</var> are valid: +</p> +<a name="linux-info-os-infotypes"></a><dl compact="compact"> +<dd><a name="index-info-os-cpus"></a> +</dd> +<dt><code>cpus</code></dt> +<dd><p>Display the list of all CPUs/cores. For each CPU/core, <small>GDB</small> prints +the available fields from /proc/cpuinfo. For each supported architecture +different fields are available. Two common entries are processor which gives +CPU number and bogomips; a system constant that is calculated during +kernel initialization. +</p> +<a name="index-info-os-files"></a> +</dd> +<dt><code>files</code></dt> +<dd><p>Display the list of open file descriptors on the target. For each +file descriptor, <small>GDB</small> prints the identifier of the process +owning the descriptor, the command of the owning process, the value +of the descriptor, and the target of the descriptor. +</p> +<a name="index-info-os-modules"></a> +</dd> +<dt><code>modules</code></dt> +<dd><p>Display the list of all loaded kernel modules on the target. For each +module, <small>GDB</small> prints the module name, the size of the module in +bytes, the number of times the module is used, the dependencies of the +module, the status of the module, and the address of the loaded module +in memory. +</p> +<a name="index-info-os-msg"></a> +</dd> +<dt><code>msg</code></dt> +<dd><p>Display the list of all System V message queues on the target. For each +message queue, <small>GDB</small> prints the message queue key, the message +queue identifier, the access permissions, the current number of bytes +on the queue, the current number of messages on the queue, the processes +that last sent and received a message on the queue, the user and group +of the owner and creator of the message queue, the times at which a +message was last sent and received on the queue, and the time at which +the message queue was last changed. +</p> +<a name="index-info-os-processes"></a> +</dd> +<dt><code>processes</code></dt> +<dd><p>Display the list of processes on the target. For each process, +<small>GDB</small> prints the process identifier, the name of the user, the +command corresponding to the process, and the list of processor cores +that the process is currently running on. (To understand what these +properties mean, for this and the following info types, please consult +the general <small>GNU</small>/Linux documentation.) +</p> +<a name="index-info-os-procgroups"></a> +</dd> +<dt><code>procgroups</code></dt> +<dd><p>Display the list of process groups on the target. For each process, +<small>GDB</small> prints the identifier of the process group that it belongs +to, the command corresponding to the process group leader, the process +identifier, and the command line of the process. The list is sorted +first by the process group identifier, then by the process identifier, +so that processes belonging to the same process group are grouped together +and the process group leader is listed first. +</p> +<a name="index-info-os-semaphores"></a> +</dd> +<dt><code>semaphores</code></dt> +<dd><p>Display the list of all System V semaphore sets on the target. For each +semaphore set, <small>GDB</small> prints the semaphore set key, the semaphore +set identifier, the access permissions, the number of semaphores in the +set, the user and group of the owner and creator of the semaphore set, +and the times at which the semaphore set was operated upon and changed. +</p> +<a name="index-info-os-shm"></a> +</dd> +<dt><code>shm</code></dt> +<dd><p>Display the list of all System V shared-memory regions on the target. +For each shared-memory region, <small>GDB</small> prints the region key, +the shared-memory identifier, the access permissions, the size of the +region, the process that created the region, the process that last +attached to or detached from the region, the current number of live +attaches to the region, and the times at which the region was last +attached to, detach from, and changed. +</p> +<a name="index-info-os-sockets"></a> +</dd> +<dt><code>sockets</code></dt> +<dd><p>Display the list of Internet-domain sockets on the target. For each +socket, <small>GDB</small> prints the address and port of the local and +remote endpoints, the current state of the connection, the creator of +the socket, the IP address family of the socket, and the type of the +connection. +</p> +<a name="index-info-os-threads"></a> +</dd> +<dt><code>threads</code></dt> +<dd><p>Display the list of threads running on the target. For each thread, +<small>GDB</small> prints the identifier of the process that the thread +belongs to, the command of the process, the thread identifier, and the +processor core that it is currently running on. The main thread of a +process is not listed. +</p></dd> +</dl> + +</dd> +<dt><code>info os</code></dt> +<dd><p>If <var>infotype</var> is omitted, then list the possible values for +<var>infotype</var> and the kind of OS information available for each +<var>infotype</var>. If the target does not return a list of possible +types, this command will report an error. +</p></dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="Memory-Region-Attributes.html#Memory-Region-Attributes" accesskey="n" rel="next">Memory Region Attributes</a>, Previous: <a href="Vector-Unit.html#Vector-Unit" accesskey="p" rel="previous">Vector Unit</a>, Up: <a href="Data.html#Data" accesskey="u" rel="up">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> |