Reading-Symbols.html 4.4 KB

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  66. Next: <a href="Writing-Symbols.html#Writing-Symbols" accesskey="n" rel="next">Writing Symbols</a>, Previous: <a href="Symbols.html#Symbols" accesskey="p" rel="prev">Symbols</a>, Up: <a href="Symbols.html#Symbols" accesskey="u" rel="up">Symbols</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="BFD-Index.html#BFD-Index" title="Index" rel="index">Index</a>]</p>
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  69. <a name="Reading-symbols"></a>
  70. <h4 class="subsection">2.7.1 Reading symbols</h4>
  71. <p>There are two stages to reading a symbol table from a BFD:
  72. allocating storage, and the actual reading process. This is an
  73. excerpt from an application which reads the symbol table:
  74. </p>
  75. <div class="example">
  76. <pre class="example"> long storage_needed;
  77. asymbol **symbol_table;
  78. long number_of_symbols;
  79. long i;
  80. storage_needed = bfd_get_symtab_upper_bound (abfd);
  81. if (storage_needed &lt; 0)
  82. FAIL
  83. if (storage_needed == 0)
  84. return;
  85. symbol_table = xmalloc (storage_needed);
  86. ...
  87. number_of_symbols =
  88. bfd_canonicalize_symtab (abfd, symbol_table);
  89. if (number_of_symbols &lt; 0)
  90. FAIL
  91. for (i = 0; i &lt; number_of_symbols; i++)
  92. process_symbol (symbol_table[i]);
  93. </pre></div>
  94. <p>All storage for the symbols themselves is in an objalloc
  95. connected to the BFD; it is freed when the BFD is closed.
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