You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
4.4 KiB
HTML
104 lines
4.4 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Copyright (C) 1988-2019 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 6.4, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>Varying Target Capabilities (Debugging with GDB)</title>
|
|
|
|
<meta name="description" content="Varying Target Capabilities (Debugging with GDB)">
|
|
<meta name="keywords" content="Varying Target Capabilities (Debugging with GDB)">
|
|
<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="Agent-Expressions.html#Agent-Expressions" rel="up" title="Agent Expressions">
|
|
<link href="Rationale.html#Rationale" rel="next" title="Rationale">
|
|
<link href="Using-Agent-Expressions.html#Using-Agent-Expressions" rel="prev" title="Using Agent Expressions">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.indentedblock {margin-right: 0em}
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
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.nolinebreak {white-space: nowrap}
|
|
span.roman {font-family: initial; font-weight: normal}
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en">
|
|
<a name="Varying-Target-Capabilities"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Rationale.html#Rationale" accesskey="n" rel="next">Rationale</a>, Previous: <a href="Using-Agent-Expressions.html#Using-Agent-Expressions" accesskey="p" rel="prev">Using Agent Expressions</a>, Up: <a href="Agent-Expressions.html#Agent-Expressions" accesskey="u" rel="up">Agent Expressions</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="Varying-Target-Capabilities-1"></a>
|
|
<h3 class="section">F.4 Varying Target Capabilities</h3>
|
|
|
|
<p>Some targets don’t support floating-point, and some would rather not
|
|
have to deal with <code>long long</code> operations. Also, different targets
|
|
will have different stack sizes, and different bytecode buffer lengths.
|
|
</p>
|
|
<p>Thus, GDB needs a way to ask the target about itself. We haven’t worked
|
|
out the details yet, but in general, GDB should be able to send the
|
|
target a packet asking it to describe itself. The reply should be a
|
|
packet whose length is explicit, so we can add new information to the
|
|
packet in future revisions of the agent, without confusing old versions
|
|
of GDB, and it should contain a version number. It should contain at
|
|
least the following information:
|
|
</p>
|
|
<ul>
|
|
<li> whether floating point is supported
|
|
|
|
</li><li> whether <code>long long</code> is supported
|
|
|
|
</li><li> maximum acceptable size of bytecode stack
|
|
|
|
</li><li> maximum acceptable length of bytecode expressions
|
|
|
|
</li><li> which registers are actually available for collection
|
|
|
|
</li><li> whether the target supports disabled tracepoints
|
|
|
|
</li></ul>
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|