<html lang="en"> <head> <title>Reading Symbols - Untitled</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Untitled"> <meta name="generator" content="makeinfo 4.7"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Symbols.html#Symbols" title="Symbols"> <link rel="prev" href="Symbols.html#Symbols" title="Symbols"> <link rel="next" href="Writing-Symbols.html#Writing-Symbols" title="Writing Symbols"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the BFD library. Copyright (C) 1991, 2000, 2001, 2003, 2006, 2007 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 1.1 or any later version published by the Free Software Foundation; with the Invariant Sections being ``GNU General Public License'' and ``Funding Free Software'', the Front-Cover texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the section entitled ``GNU Free Documentation License''. (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development.--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family: serif; font-weight: normal; } --></style> </head> <body> <div class="node"> <p> <a name="Reading-Symbols"></a>Next: <a rel="next" accesskey="n" href="Writing-Symbols.html#Writing-Symbols">Writing Symbols</a>, Previous: <a rel="previous" accesskey="p" href="Symbols.html#Symbols">Symbols</a>, Up: <a rel="up" accesskey="u" href="Symbols.html#Symbols">Symbols</a> <hr><br> </div> <h4 class="subsection">2.7.1 Reading symbols</h4> <p>There are two stages to reading a symbol table from a BFD: allocating storage, and the actual reading process. This is an excerpt from an application which reads the symbol table: <pre class="example"> long storage_needed; asymbol **symbol_table; long number_of_symbols; long i; storage_needed = bfd_get_symtab_upper_bound (abfd); if (storage_needed < 0) FAIL if (storage_needed == 0) return; symbol_table = xmalloc (storage_needed); ... number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table); if (number_of_symbols < 0) FAIL for (i = 0; i < number_of_symbols; i++) process_symbol (symbol_table[i]); </pre> <p>All storage for the symbols themselves is in an objalloc connected to the BFD; it is freed when the BFD is closed. </body></html>