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Previous: <a href="Source-Level-Debugging-in-Emacs.html" accesskey="p" rel="prev">Source Level Debugging in Emacs</a>, Up: <a href="Debugging.html" accesskey="u" rel="up">Debugging</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-and-Variable-Index.html" title="Index" rel="index">Index</a>]</p>
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<span id="Low-Level-Debug-Functions-1"></span><h3 class="section">18.2 Low Level Debug Functions</h3>
<p>Use the following functions to directly access GCL stacks.
</p><div class="example">
<pre class="example">(SI:VS i) Returns the i-th entity in VS.
(SI:IHS-VS i) Returns the VS index of the i-th entity in IHS.
(SI:IHS-FUN i) Returns the function of the i-th entity in IHS.
(SI:FRS-VS i) Returns the VS index of the i-th entity in FRS.
(SI:FRS-BDS i) Returns the BDS index of the i-th entity in FRS.
(SI:FRS-IHS i) Returns the IHS index of the i-th entity in FRS.
(SI:BDS-VAR i) Returns the symbol of the i-th entity in BDS.
(SI:BDS-VAL i) Returns the value of the i-th entity in BDS.
(SI:SUPER-GO i tag)
Jumps to the specified tag established by the TAGBODY frame at
FRS[i]. Both arguments are evaluated. If FRS[i] happens to be
a non-TAGBODY frame, then (THROW (SI:IHS-TAG i) (VALUES)) is
performed.
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