visus
/
toolchain-gcc-arm-embedded

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Copyright (C) 1988-2020 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 6.5, http://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>i386 Features (Debugging with GDB)</title>

<meta name="description" content="i386 Features (Debugging with GDB)">
<meta name="keywords" content="i386 Features (Debugging with GDB)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<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="Standard-Target-Features.html#Standard-Target-Features" rel="up" title="Standard Target Features">
<link href="MicroBlaze-Features.html#MicroBlaze-Features" rel="next" title="MicroBlaze Features">
<link href="ARM-Features.html#ARM-Features" rel="prev" title="ARM Features">
<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="i386-Features"></a>
<div class="header">
<p>
Next: <a href="MicroBlaze-Features.html#MicroBlaze-Features" accesskey="n" rel="next">MicroBlaze Features</a>, Previous: <a href="ARM-Features.html#ARM-Features" accesskey="p" rel="prev">ARM Features</a>, Up: <a href="Standard-Target-Features.html#Standard-Target-Features" accesskey="u" rel="up">Standard Target Features</a> &nbsp; [<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="i386-Features-1"></a>
<h4 class="subsection">G.5.4 i386 Features</h4>
<a name="index-target-descriptions_002c-i386-features"></a>

<p>The &lsquo;<samp>org.gnu.gdb.i386.core</samp>&rsquo; feature is required for i386/amd64
targets.  It should describe the following registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>eax</samp>&rsquo; through &lsquo;<samp>edi</samp>&rsquo; plus &lsquo;<samp>eip</samp>&rsquo; for i386
</li><li>- &lsquo;<samp>rax</samp>&rsquo; through &lsquo;<samp>r15</samp>&rsquo; plus &lsquo;<samp>rip</samp>&rsquo; for amd64
</li><li>- &lsquo;<samp>eflags</samp>&rsquo;, &lsquo;<samp>cs</samp>&rsquo;, &lsquo;<samp>ss</samp>&rsquo;, &lsquo;<samp>ds</samp>&rsquo;, &lsquo;<samp>es</samp>&rsquo;,
&lsquo;<samp>fs</samp>&rsquo;, &lsquo;<samp>gs</samp>&rsquo;
</li><li>- &lsquo;<samp>st0</samp>&rsquo; through &lsquo;<samp>st7</samp>&rsquo;
</li><li>- &lsquo;<samp>fctrl</samp>&rsquo;, &lsquo;<samp>fstat</samp>&rsquo;, &lsquo;<samp>ftag</samp>&rsquo;, &lsquo;<samp>fiseg</samp>&rsquo;, &lsquo;<samp>fioff</samp>&rsquo;,
&lsquo;<samp>foseg</samp>&rsquo;, &lsquo;<samp>fooff</samp>&rsquo; and &lsquo;<samp>fop</samp>&rsquo;
</li></ul>

<p>The register sets may be different, depending on the target.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.i386.sse</samp>&rsquo; feature is optional.  It should
describe registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>xmm0</samp>&rsquo; through &lsquo;<samp>xmm7</samp>&rsquo; for i386
</li><li>- &lsquo;<samp>xmm0</samp>&rsquo; through &lsquo;<samp>xmm15</samp>&rsquo; for amd64
</li><li>- &lsquo;<samp>mxcsr</samp>&rsquo;
</li></ul>

<p>The &lsquo;<samp>org.gnu.gdb.i386.avx</samp>&rsquo; feature is optional and requires the
&lsquo;<samp>org.gnu.gdb.i386.sse</samp>&rsquo; feature.  It should
describe the upper 128 bits of <small>YMM</small> registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>ymm0h</samp>&rsquo; through &lsquo;<samp>ymm7h</samp>&rsquo; for i386
</li><li>- &lsquo;<samp>ymm0h</samp>&rsquo; through &lsquo;<samp>ymm15h</samp>&rsquo; for amd64
</li></ul>

<p>The &lsquo;<samp>org.gnu.gdb.i386.mpx</samp>&rsquo; is an optional feature representing Intel
Memory Protection Extension (MPX).  It should describe the following registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>bnd0raw</samp>&rsquo; through &lsquo;<samp>bnd3raw</samp>&rsquo; for i386 and amd64.
</li><li>- &lsquo;<samp>bndcfgu</samp>&rsquo; and &lsquo;<samp>bndstatus</samp>&rsquo; for i386 and amd64.
</li></ul>

<p>The &lsquo;<samp>org.gnu.gdb.i386.linux</samp>&rsquo; feature is optional.  It should
describe a single register, &lsquo;<samp>orig_eax</samp>&rsquo;.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.i386.segments</samp>&rsquo; feature is optional.  It should
describe two system registers: &lsquo;<samp>fs_base</samp>&rsquo; and &lsquo;<samp>gs_base</samp>&rsquo;.
</p>
<p>The &lsquo;<samp>org.gnu.gdb.i386.avx512</samp>&rsquo; feature is optional and requires the
&lsquo;<samp>org.gnu.gdb.i386.avx</samp>&rsquo; feature.  It should
describe additional <small>XMM</small> registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>xmm16h</samp>&rsquo; through &lsquo;<samp>xmm31h</samp>&rsquo;, only valid for amd64.
</li></ul>

<p>It should describe the upper 128 bits of additional <small>YMM</small> registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>ymm16h</samp>&rsquo; through &lsquo;<samp>ymm31h</samp>&rsquo;, only valid for amd64.
</li></ul>

<p>It should
describe the upper 256 bits of <small>ZMM</small> registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>zmm0h</samp>&rsquo; through &lsquo;<samp>zmm7h</samp>&rsquo; for i386.
</li><li>- &lsquo;<samp>zmm0h</samp>&rsquo; through &lsquo;<samp>zmm15h</samp>&rsquo; for amd64.
</li></ul>

<p>It should
describe the additional <small>ZMM</small> registers:
</p>
<ul class="no-bullet">
<li>- &lsquo;<samp>zmm16h</samp>&rsquo; through &lsquo;<samp>zmm31h</samp>&rsquo;, only valid for amd64.
</li></ul>

<p>The &lsquo;<samp>org.gnu.gdb.i386.pkeys</samp>&rsquo; feature is optional.  It should
describe a single register, &lsquo;<samp>pkru</samp>&rsquo;.  It is a 32-bit register
valid for i386 and amd64.
</p>
<hr>
<div class="header">
<p>
Next: <a href="MicroBlaze-Features.html#MicroBlaze-Features" accesskey="n" rel="next">MicroBlaze Features</a>, Previous: <a href="ARM-Features.html#ARM-Features" accesskey="p" rel="prev">ARM Features</a>, Up: <a href="Standard-Target-Features.html#Standard-Target-Features" accesskey="u" rel="up">Standard Target Features</a> &nbsp; [<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>