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| <h5 class="subsubsection">23.3.3.18 Symbol table representation in Guile.</h5> |
| |
| <p><a name="index-symbol-tables-in-guile-2749"></a><a name="index-g_t_003cgdb_003asymtab_003e-2750"></a><a name="index-g_t_003cgdb_003asal_003e-2751"></a> |
| Access to symbol table data maintained by <span class="sc">gdb</span> on the inferior |
| is exposed to Guile via two objects: <code><gdb:sal></code> (symtab-and-line) and |
| <code><gdb:symtab></code>. Symbol table and line data for a frame is returned |
| from the <code>frame-find-sal</code> <code><gdb:frame></code> procedure. |
| See <a href="Frames-In-Guile.html#Frames-In-Guile">Frames In Guile</a>. |
| |
| <p>For more information on <span class="sc">gdb</span>'s symbol table management, see |
| <a href="Symbols.html#Symbols">Examining the Symbol Table</a>. |
| |
| <p>The following symtab-related procedures are provided by the |
| <code>(gdb)</code> module: |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>symtab?</b><var> object<a name="index-symtab_003f-2752"></a></var><br> |
| <blockquote><p>Return <code>#t</code> if <var>object</var> is an object of type <code><gdb:symtab></code>. |
| Otherwise return <code>#f</code>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>symtab-valid?</b><var> symtab<a name="index-symtab_002dvalid_003f-2753"></a></var><br> |
| <blockquote><p>Return <code>#t</code> if the <code><gdb:symtab></code> object is valid, |
| <code>#f</code> if not. A <code><gdb:symtab></code> object becomes invalid when |
| the symbol table it refers to no longer exists in <span class="sc">gdb</span>. |
| All other <code><gdb:symtab></code> procedures will throw an exception |
| if it is invalid at the time the procedure is called. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>symtab-filename</b><var> symtab<a name="index-symtab_002dfilename-2754"></a></var><br> |
| <blockquote><p>Return the symbol table's source filename. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>symtab-fullname</b><var> symtab<a name="index-symtab_002dfullname-2755"></a></var><br> |
| <blockquote><p>Return the symbol table's source absolute file name. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>symtab-objfile</b><var> symtab<a name="index-symtab_002dobjfile-2756"></a></var><br> |
| <blockquote><p>Return the symbol table's backing object file. See <a href="Objfiles-In-Guile.html#Objfiles-In-Guile">Objfiles In Guile</a>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>symtab-global-block</b><var> symtab<a name="index-symtab_002dglobal_002dblock-2757"></a></var><br> |
| <blockquote><p>Return the global block of the underlying symbol table. |
| See <a href="Blocks-In-Guile.html#Blocks-In-Guile">Blocks In Guile</a>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>symtab-static-block</b><var> symtab<a name="index-symtab_002dstatic_002dblock-2758"></a></var><br> |
| <blockquote><p>Return the static block of the underlying symbol table. |
| See <a href="Blocks-In-Guile.html#Blocks-In-Guile">Blocks In Guile</a>. |
| </p></blockquote></div> |
| |
| <p>The following symtab-and-line-related procedures are provided by the |
| <code>(gdb)</code> module: |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>sal?</b><var> object<a name="index-sal_003f-2759"></a></var><br> |
| <blockquote><p>Return <code>#t</code> if <var>object</var> is an object of type <code><gdb:sal></code>. |
| Otherwise return <code>#f</code>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>sal-valid?</b><var> sal<a name="index-sal_002dvalid_003f-2760"></a></var><br> |
| <blockquote><p>Return <code>#t</code> if <var>sal</var> is valid, <code>#f</code> if not. |
| A <code><gdb:sal></code> object becomes invalid when the Symbol table object |
| it refers to no longer exists in <span class="sc">gdb</span>. All other |
| <code><gdb:sal></code> procedures will throw an exception if it is |
| invalid at the time the procedure is called. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>sal-symtab</b><var> sal<a name="index-sal_002dsymtab-2761"></a></var><br> |
| <blockquote><p>Return the symbol table object (<code><gdb:symtab></code>) for <var>sal</var>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>sal-line</b><var> sal<a name="index-sal_002dline-2762"></a></var><br> |
| <blockquote><p>Return the line number for <var>sal</var>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>sal-pc</b><var> sal<a name="index-sal_002dpc-2763"></a></var><br> |
| <blockquote><p>Return the start of the address range occupied by code for <var>sal</var>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>sal-last</b><var> sal<a name="index-sal_002dlast-2764"></a></var><br> |
| <blockquote><p>Return the end of the address range occupied by code for <var>sal</var>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Scheme Procedure: <b>find-pc-line</b><var> pc<a name="index-find_002dpc_002dline-2765"></a></var><br> |
| <blockquote><p>Return the <code><gdb:sal></code> object corresponding to the <var>pc</var> value. |
| If an invalid value of <var>pc</var> is passed as an argument, then the |
| <code>symtab</code> and <code>line</code> attributes of the returned <code><gdb:sal></code> |
| object will be <code>#f</code> and 0 respectively. |
| </p></blockquote></div> |
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