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109 lines
5.6 KiB
HTML
109 lines
5.6 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>ARM Features (Debugging with GDB)</title>
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<meta name="description" content="ARM Features (Debugging with GDB)">
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<meta name="keywords" content="ARM Features (Debugging with GDB)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Standard-Target-Features.html#Standard-Target-Features" rel="up" title="Standard Target Features">
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<link href="i386-Features.html#i386-Features" rel="next" title="i386 Features">
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<link href="ARC-Features.html#ARC-Features" rel="prev" title="ARC Features">
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<style type="text/css">
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-->
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</style>
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</head>
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<body lang="en">
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<a name="ARM-Features"></a>
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<div class="header">
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<p>
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Next: <a href="i386-Features.html#i386-Features" accesskey="n" rel="next">i386 Features</a>, Previous: <a href="ARC-Features.html#ARC-Features" accesskey="p" rel="prev">ARC Features</a>, Up: <a href="Standard-Target-Features.html#Standard-Target-Features" accesskey="u" rel="up">Standard Target Features</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>
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</div>
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<hr>
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<a name="ARM-Features-1"></a>
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<h4 class="subsection">G.5.3 ARM Features</h4>
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<a name="index-target-descriptions_002c-ARM-features"></a>
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<p>The ‘<samp>org.gnu.gdb.arm.core</samp>’ feature is required for non-M-profile
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ARM targets.
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It should contain registers ‘<samp>r0</samp>’ through ‘<samp>r13</samp>’, ‘<samp>sp</samp>’,
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‘<samp>lr</samp>’, ‘<samp>pc</samp>’, and ‘<samp>cpsr</samp>’.
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</p>
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<p>For M-profile targets (e.g. Cortex-M3), the ‘<samp>org.gnu.gdb.arm.core</samp>’
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feature is replaced by ‘<samp>org.gnu.gdb.arm.m-profile</samp>’. It should contain
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registers ‘<samp>r0</samp>’ through ‘<samp>r13</samp>’, ‘<samp>sp</samp>’, ‘<samp>lr</samp>’, ‘<samp>pc</samp>’,
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and ‘<samp>xpsr</samp>’.
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</p>
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<p>The ‘<samp>org.gnu.gdb.arm.fpa</samp>’ feature is optional. If present, it
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should contain registers ‘<samp>f0</samp>’ through ‘<samp>f7</samp>’ and ‘<samp>fps</samp>’.
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</p>
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<p>The ‘<samp>org.gnu.gdb.xscale.iwmmxt</samp>’ feature is optional. If present,
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it should contain at least registers ‘<samp>wR0</samp>’ through ‘<samp>wR15</samp>’ and
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‘<samp>wCGR0</samp>’ through ‘<samp>wCGR3</samp>’. The ‘<samp>wCID</samp>’, ‘<samp>wCon</samp>’,
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‘<samp>wCSSF</samp>’, and ‘<samp>wCASF</samp>’ registers are optional.
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</p>
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<p>The ‘<samp>org.gnu.gdb.arm.vfp</samp>’ feature is optional. If present, it
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should contain at least registers ‘<samp>d0</samp>’ through ‘<samp>d15</samp>’. If
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they are present, ‘<samp>d16</samp>’ through ‘<samp>d31</samp>’ should also be included.
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<small>GDB</small> will synthesize the single-precision registers from
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halves of the double-precision registers.
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</p>
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<p>The ‘<samp>org.gnu.gdb.arm.neon</samp>’ feature is optional. It does not
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need to contain registers; it instructs <small>GDB</small> to display the
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VFP double-precision registers as vectors and to synthesize the
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quad-precision registers from pairs of double-precision registers.
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If this feature is present, ‘<samp>org.gnu.gdb.arm.vfp</samp>’ must also
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be present and include 32 double-precision registers.
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</p>
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</body>
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</html>
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