toolchain/gcc-linaro-6.3.1-2017.02-x8.../share/doc/gdb/stabs/Alternate-Entry-Points.html

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<h3 class="section">2.8 Alternate Entry Points</h3>
<a name="index-N_005fENTRY"></a>
<a name="index-C_005fENTRY"></a>
<p>Some languages, like Fortran, have the ability to enter procedures at
some place other than the beginning. One can declare an alternate entry
point. The <code>N_ENTRY</code> stab is for this; however, the Sun FORTRAN
compiler doesn&rsquo;t use it. According to AIX documentation, only the name
of a <code>C_ENTRY</code> stab is significant; the address of the alternate
entry point comes from the corresponding external symbol. A previous
revision of this document said that the value of an <code>N_ENTRY</code> stab
was the address of the alternate entry point, but I don&rsquo;t know the
source for that information.
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