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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gdb/MIPS.html | |
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diff --git a/share/doc/gdb/MIPS.html b/share/doc/gdb/MIPS.html new file mode 100644 index 0000000..0c359cc --- /dev/null +++ b/share/doc/gdb/MIPS.html @@ -0,0 +1,225 @@ +<!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: MIPS</title> + +<meta name="description" content="Debugging with GDB: MIPS"> +<meta name="keywords" content="Debugging with GDB: MIPS"> +<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="Architectures.html#Architectures" rel="up" title="Architectures"> +<link href="HPPA.html#HPPA" rel="next" title="HPPA"> +<link href="Alpha.html#Alpha" rel="previous" title="Alpha"> +<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="MIPS"></a> +<div class="header"> +<p> +Next: <a href="HPPA.html#HPPA" accesskey="n" rel="next">HPPA</a>, Previous: <a href="Alpha.html#Alpha" accesskey="p" rel="previous">Alpha</a>, Up: <a href="Architectures.html#Architectures" accesskey="u" rel="up">Architectures</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="MIPS-1"></a> +<h4 class="subsection">21.4.4 <acronym>MIPS</acronym></h4> + +<a name="index-stack-on-Alpha"></a> +<a name="index-stack-on-MIPS"></a> +<a name="index-Alpha-stack"></a> +<a name="index-MIPS-stack"></a> +<p>Alpha- and <acronym>MIPS</acronym>-based computers use an unusual stack frame, which +sometimes requires <small>GDB</small> to search backward in the object code to +find the beginning of a function. +</p> +<a name="index-response-time_002c-MIPS-debugging"></a> +<p>To improve response time (especially for embedded applications, where +<small>GDB</small> may be restricted to a slow serial line for this search) +you may want to limit the size of this search, using one of these +commands: +</p> +<dl compact="compact"> +<dd><a name="index-heuristic_002dfence_002dpost-_0028Alpha_002c-MIPS_0029"></a> +</dd> +<dt><code>set heuristic-fence-post <var>limit</var></code></dt> +<dd><p>Restrict <small>GDB</small> to examining at most <var>limit</var> bytes in its +search for the beginning of a function. A value of <var>0</var> (the +default) means there is no limit. However, except for <var>0</var>, the +larger the limit the more bytes <code>heuristic-fence-post</code> must search +and therefore the longer it takes to run. You should only need to use +this command when debugging a stripped executable. +</p> +</dd> +<dt><code>show heuristic-fence-post</code></dt> +<dd><p>Display the current limit. +</p></dd> +</dl> + +<p>These commands are available <em>only</em> when <small>GDB</small> is configured +for debugging programs on Alpha or <acronym>MIPS</acronym> processors. +</p> +<p>Several <acronym>MIPS</acronym>-specific commands are available when debugging <acronym>MIPS</acronym> +programs: +</p> +<dl compact="compact"> +<dt><code>set mips abi <var>arg</var></code></dt> +<dd><a name="index-set-mips-abi"></a> +<a name="index-set-ABI-for-MIPS"></a> +<p>Tell <small>GDB</small> which <acronym>MIPS</acronym> ABI is used by the inferior. Possible +values of <var>arg</var> are: +</p> +<dl compact="compact"> +<dt>‘<samp>auto</samp>’</dt> +<dd><p>The default ABI associated with the current binary (this is the +default). +</p></dd> +<dt>‘<samp>o32</samp>’</dt> +<dt>‘<samp>o64</samp>’</dt> +<dt>‘<samp>n32</samp>’</dt> +<dt>‘<samp>n64</samp>’</dt> +<dt>‘<samp>eabi32</samp>’</dt> +<dt>‘<samp>eabi64</samp>’</dt> +</dl> + +</dd> +<dt><code>show mips abi</code></dt> +<dd><a name="index-show-mips-abi"></a> +<p>Show the <acronym>MIPS</acronym> ABI used by <small>GDB</small> to debug the inferior. +</p> +</dd> +<dt><code>set mips compression <var>arg</var></code></dt> +<dd><a name="index-set-mips-compression"></a> +<a name="index-code-compression_002c-MIPS"></a> +<p>Tell <small>GDB</small> which <acronym>MIPS</acronym> compressed +<acronym title="Instruction Set Architecture">ISA</acronym> (Instruction Set Architecture) encoding is used by the +inferior. <small>GDB</small> uses this for code disassembly and other +internal interpretation purposes. This setting is only referred to +when no executable has been associated with the debugging session or +the executable does not provide information about the encoding it uses. +Otherwise this setting is automatically updated from information +provided by the executable. +</p> +<p>Possible values of <var>arg</var> are ‘<samp>mips16</samp>’ and ‘<samp>micromips</samp>’. +The default compressed <acronym title="Instruction Set Architecture">ISA</acronym> encoding is ‘<samp>mips16</samp>’, as +executables containing <acronym>MIPS16</acronym> code frequently are not +identified as such. +</p> +<p>This setting is “sticky”; that is, it retains its value across +debugging sessions until reset either explicitly with this command or +implicitly from an executable. +</p> +<p>The compiler and/or assembler typically add symbol table annotations to +identify functions compiled for the <acronym>MIPS16</acronym> or +<acronym>microMIPS</acronym> <acronym title="Instruction Set Architecture">ISA</acronym>s. If these function-scope annotations +are present, <small>GDB</small> uses them in preference to the global +compressed <acronym title="Instruction Set Architecture">ISA</acronym> encoding setting. +</p> +</dd> +<dt><code>show mips compression</code></dt> +<dd><a name="index-show-mips-compression"></a> +<p>Show the <acronym>MIPS</acronym> compressed <acronym title="Instruction Set Architecture">ISA</acronym> encoding used by +<small>GDB</small> to debug the inferior. +</p> +</dd> +<dt><code>set mipsfpu</code></dt> +<dt><code>show mipsfpu</code></dt> +<dd><p>See <a href="MIPS-Embedded.html#MIPS-Embedded">set mipsfpu</a>. +</p> +</dd> +<dt><code>set mips mask-address <var>arg</var></code></dt> +<dd><a name="index-set-mips-mask_002daddress"></a> +<a name="index-MIPS-addresses_002c-masking"></a> +<p>This command determines whether the most-significant 32 bits of 64-bit +<acronym>MIPS</acronym> addresses are masked off. The argument <var>arg</var> can be +‘<samp>on</samp>’, ‘<samp>off</samp>’, or ‘<samp>auto</samp>’. The latter is the default +setting, which lets <small>GDB</small> determine the correct value. +</p> +</dd> +<dt><code>show mips mask-address</code></dt> +<dd><a name="index-show-mips-mask_002daddress"></a> +<p>Show whether the upper 32 bits of <acronym>MIPS</acronym> addresses are masked off or +not. +</p> +</dd> +<dt><code>set remote-mips64-transfers-32bit-regs</code></dt> +<dd><a name="index-set-remote_002dmips64_002dtransfers_002d32bit_002dregs"></a> +<p>This command controls compatibility with 64-bit <acronym>MIPS</acronym> targets that +transfer data in 32-bit quantities. If you have an old <acronym>MIPS</acronym> 64 target +that transfers 32 bits for some registers, like <small>SR</small> and <small>FSR</small>, +and 64 bits for other registers, set this option to ‘<samp>on</samp>’. +</p> +</dd> +<dt><code>show remote-mips64-transfers-32bit-regs</code></dt> +<dd><a name="index-show-remote_002dmips64_002dtransfers_002d32bit_002dregs"></a> +<p>Show the current setting of compatibility with older <acronym>MIPS</acronym> 64 targets. +</p> +</dd> +<dt><code>set debug mips</code></dt> +<dd><a name="index-set-debug-mips"></a> +<p>This command turns on and off debugging messages for the <acronym>MIPS</acronym>-specific +target code in <small>GDB</small>. +</p> +</dd> +<dt><code>show debug mips</code></dt> +<dd><a name="index-show-debug-mips"></a> +<p>Show the current setting of <acronym>MIPS</acronym> debugging messages. +</p></dd> +</dl> + + +<hr> +<div class="header"> +<p> +Next: <a href="HPPA.html#HPPA" accesskey="n" rel="next">HPPA</a>, Previous: <a href="Alpha.html#Alpha" accesskey="p" rel="previous">Alpha</a>, Up: <a href="Architectures.html#Architectures" accesskey="u" rel="up">Architectures</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> |