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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/Stub-Contents.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
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diff --git a/share/doc/gdb/Stub-Contents.html b/share/doc/gdb/Stub-Contents.html new file mode 100644 index 0000000..0c718ea --- /dev/null +++ b/share/doc/gdb/Stub-Contents.html @@ -0,0 +1,133 @@ +<!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: Stub Contents</title> + +<meta name="description" content="Debugging with GDB: Stub Contents"> +<meta name="keywords" content="Debugging with GDB: Stub Contents"> +<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="Remote-Stub.html#Remote-Stub" rel="up" title="Remote Stub"> +<link href="Bootstrapping.html#Bootstrapping" rel="next" title="Bootstrapping"> +<link href="Remote-Stub.html#Remote-Stub" rel="previous" title="Remote Stub"> +<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="Stub-Contents"></a> +<div class="header"> +<p> +Next: <a href="Bootstrapping.html#Bootstrapping" accesskey="n" rel="next">Bootstrapping</a>, Up: <a href="Remote-Stub.html#Remote-Stub" accesskey="u" rel="up">Remote Stub</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="What-the-Stub-Can-Do-for-You"></a> +<h4 class="subsection">20.5.1 What the Stub Can Do for You</h4> + +<a name="index-remote-serial-stub"></a> +<p>The debugging stub for your architecture supplies these three +subroutines: +</p> +<dl compact="compact"> +<dt><code>set_debug_traps</code></dt> +<dd><a name="index-set_005fdebug_005ftraps"></a> +<a name="index-remote-serial-stub_002c-initialization"></a> +<p>This routine arranges for <code>handle_exception</code> to run when your +program stops. You must call this subroutine explicitly in your +program’s startup code. +</p> +</dd> +<dt><code>handle_exception</code></dt> +<dd><a name="index-handle_005fexception"></a> +<a name="index-remote-serial-stub_002c-main-routine"></a> +<p>This is the central workhorse, but your program never calls it +explicitly—the setup code arranges for <code>handle_exception</code> to +run when a trap is triggered. +</p> +<p><code>handle_exception</code> takes control when your program stops during +execution (for example, on a breakpoint), and mediates communications +with <small>GDB</small> on the host machine. This is where the communications +protocol is implemented; <code>handle_exception</code> acts as the <small>GDB</small> +representative on the target machine. It begins by sending summary +information on the state of your program, then continues to execute, +retrieving and transmitting any information <small>GDB</small> needs, until you +execute a <small>GDB</small> command that makes your program resume; at that point, +<code>handle_exception</code> returns control to your own code on the target +machine. +</p> +</dd> +<dt><code>breakpoint</code></dt> +<dd><a name="index-breakpoint-subroutine_002c-remote"></a> +<p>Use this auxiliary subroutine to make your program contain a +breakpoint. Depending on the particular situation, this may be the only +way for <small>GDB</small> to get control. For instance, if your target +machine has some sort of interrupt button, you won’t need to call this; +pressing the interrupt button transfers control to +<code>handle_exception</code>—in effect, to <small>GDB</small>. On some machines, +simply receiving characters on the serial port may also trigger a trap; +again, in that situation, you don’t need to call <code>breakpoint</code> from +your own program—simply running ‘<samp>target remote</samp>’ from the host +<small>GDB</small> session gets control. +</p> +<p>Call <code>breakpoint</code> if none of these is true, or if you simply want +to make certain your program stops at a predetermined point for the +start of your debugging session. +</p></dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="Bootstrapping.html#Bootstrapping" accesskey="n" rel="next">Bootstrapping</a>, Up: <a href="Remote-Stub.html#Remote-Stub" accesskey="u" rel="up">Remote Stub</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> |