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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/stabs/Block-Structure.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
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diff --git a/share/doc/stabs/Block-Structure.html b/share/doc/stabs/Block-Structure.html new file mode 100644 index 0000000..6f31b61 --- /dev/null +++ b/share/doc/stabs/Block-Structure.html @@ -0,0 +1,105 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1992-2023 Free Software Foundation, Inc. +Contributed by Cygnus Support. Written by Julia Menapace, Jim Kingdon, +and David MacKenzie. + +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 no +Invariant Sections, with no Front-Cover Texts, and with no Back-Cover +Texts. A copy of the license is included in the section entitled "GNU +Free Documentation License". --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>STABS: Block Structure</title> + +<meta name="description" content="STABS: Block Structure"> +<meta name="keywords" content="STABS: Block Structure"> +<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="Symbol-Types-Index.html#Symbol-Types-Index" rel="index" title="Symbol Types Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Program-Structure.html#Program-Structure" rel="up" title="Program Structure"> +<link href="Alternate-Entry-Points.html#Alternate-Entry-Points" rel="next" title="Alternate Entry Points"> +<link href="Nested-Procedures.html#Nested-Procedures" rel="previous" title="Nested Procedures"> +<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="Block-Structure"></a> +<div class="header"> +<p> +Next: <a href="Alternate-Entry-Points.html#Alternate-Entry-Points" accesskey="n" rel="next">Alternate Entry Points</a>, Previous: <a href="Nested-Procedures.html#Nested-Procedures" accesskey="p" rel="previous">Nested Procedures</a>, Up: <a href="Program-Structure.html#Program-Structure" accesskey="u" rel="up">Program Structure</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Types-Index.html#Symbol-Types-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Block-Structure-1"></a> +<h3 class="section">2.7 Block Structure</h3> + +<a name="index-N_005fLBRAC"></a> +<a name="index-N_005fRBRAC"></a> +<p>The program’s block structure is represented by the <code>N_LBRAC</code> (left +brace) and the <code>N_RBRAC</code> (right brace) stab types. The variables +defined inside a block precede the <code>N_LBRAC</code> symbol for most +compilers, including GCC. Other compilers, such as the Convex, Acorn +RISC machine, and Sun <code>acc</code> compilers, put the variables after the +<code>N_LBRAC</code> symbol. The values of the <code>N_LBRAC</code> and +<code>N_RBRAC</code> symbols are the start and end addresses of the code of +the block, respectively. For most machines, they are relative to the +starting address of this source file. For the Gould NP1, they are +absolute. For stabs in sections (see <a href="Stab-Sections.html#Stab-Sections">Stab Sections</a>), they are +relative to the function in which they occur. +</p> +<p>The <code>N_LBRAC</code> and <code>N_RBRAC</code> stabs that describe the block +scope of a procedure are located after the <code>N_FUN</code> stab that +represents the procedure itself. +</p> +<p>Sun documents the desc field of <code>N_LBRAC</code> and +<code>N_RBRAC</code> symbols as containing the nesting level of the block. +However, dbx seems to not care, and GCC always sets desc to +zero. +</p> +<a name="index-_002ebb"></a> +<a name="index-_002ebe"></a> +<a name="index-C_005fBLOCK"></a> +<p>For XCOFF, block scope is indicated with <code>C_BLOCK</code> symbols. If the +name of the symbol is ‘<samp>.bb</samp>’, then it is the beginning of the block; +if the name of the symbol is ‘<samp>.be</samp>’; it is the end of the block. +</p> + + + +</body> +</html> |