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diff --git a/share/doc/gdb/ARC-Features.html b/share/doc/gdb/ARC-Features.html new file mode 100644 index 0000000..33f4b9e --- /dev/null +++ b/share/doc/gdb/ARC-Features.html @@ -0,0 +1,123 @@ +<!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: ARC Features</title> + +<meta name="description" content="Debugging with GDB: ARC Features"> +<meta name="keywords" content="Debugging with GDB: ARC Features"> +<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="Standard-Target-Features.html#Standard-Target-Features" rel="up" title="Standard Target Features"> +<link href="ARM-Features.html#ARM-Features" rel="next" title="ARM Features"> +<link href="AArch64-Features.html#AArch64-Features" rel="previous" title="AArch64 Features"> +<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="ARC-Features"></a> +<div class="header"> +<p> +Next: <a href="ARM-Features.html#ARM-Features" accesskey="n" rel="next">ARM Features</a>, Previous: <a href="AArch64-Features.html#AArch64-Features" accesskey="p" rel="previous">AArch64 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> +</div> +<hr> +<a name="ARC-Features-1"></a> +<h4 class="subsection">G.5.2 ARC Features</h4> +<a name="index-target-descriptions_002c-ARC-Features"></a> + +<p>ARC processors are so configurable that even core registers and their numbers +are not predetermined completely. Moreover, <em>flags</em> and <em>PC</em> +registers, which are important to <small>GDB</small>, are not “core” registers in +ARC. Therefore, there are two features that their presence is mandatory: +‘<samp>org.gnu.gdb.arc.core</samp>’ and ‘<samp>org.gnu.gdb.arc.aux</samp>’. +</p> +<p>The ‘<samp>org.gnu.gdb.arc.core</samp>’ feature is required for all targets. It must +contain registers: +</p> +<ul class="no-bullet"> +<li>- ‘<samp>r0</samp>’ through ‘<samp>r25</samp>’ for normal register file targets. +</li><li>- ‘<samp>r0</samp>’ through ‘<samp>r3</samp>’, and ‘<samp>r10</samp>’ through ‘<samp>r15</samp>’ for reduced +register file targets. +</li><li>- ‘<samp>gp</samp>’, ‘<samp>fp</samp>’, ‘<samp>sp</samp>’, ‘<samp>r30</samp>’<a name="DOCF23" href="#FOOT23"><sup>23</sup></a>, +‘<samp>blink</samp>’, ‘<samp>lp_count</samp>’, ‘<samp>pcl</samp>’. +</li></ul> + +<p>In case of an ARCompact target (ARCv1 ISA), the ‘<samp>org.gnu.gdb.arc.core</samp>’ +feature may contain registers ‘<samp>ilink1</samp>’ and ‘<samp>ilink2</samp>’. While in case +of ARC EM and ARC HS targets (ARCv2 ISA), register ‘<samp>ilink</samp>’ may be present. +The difference between ARCv1 and ARCv2 is the naming of registers <em>29th</em> +and <em>30th</em>. They are called ‘<samp>ilink1</samp>’ and ‘<samp>ilink2</samp>’ for ARCv1 and +are optional. For ARCv2, they are called ‘<samp>ilink</samp>’ and ‘<samp>r30</samp>’ and only +‘<samp>ilink</samp>’ is optional. The optionality of ‘<samp>ilink*</samp>’ registers is +because of their inaccessibility during user space debugging sessions. +</p> +<p>Extension core registers ‘<samp>r32</samp>’ through ‘<samp>r59</samp>’ are optional and their +existence depends on the configuration. When debugging GNU/Linux applications, +i.e. user space debugging, these core registers are not available. +</p> +<p>The ‘<samp>org.gnu.gdb.arc.aux</samp>’ feature is required for all ARC targets. Here +is the list of registers pertinent to this feature: +</p> +<ul class="no-bullet"> +<li>- mandatory: ‘<samp>pc</samp>’ and ‘<samp>status32</samp>’. +</li><li>- optional: ‘<samp>lp_start</samp>’, ‘<samp>lp_end</samp>’, and ‘<samp>bta</samp>’. +</li></ul> + +<div class="footnote"> +<hr> +<h4 class="footnotes-heading">Footnotes</h4> + +<h3><a name="FOOT23" href="#DOCF23">(23)</a></h3> +<p>Not necessary for ARCv1.</p> +</div> + + + +</body> +</html> |