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<head>
<title>getcallerpc(3) - Plan 9 from User Space</title>
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<tr><td width=20><td><b>GETCALLERPC(3)</b><td align=right><b>GETCALLERPC(3)</b>
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<p><font size=+1><b>NAME </b></font><br>
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getcallerpc – fetch return PC of current function<br>
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<p><font size=+1><b>SYNOPSIS </b></font><br>
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<tt><font size=+1>#include <u.h><br>
#include <libc.h>
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<tt><font size=+1>ulong getcallerpc(void *firstarg)<br>
</font></tt>
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<p><font size=+1><b>DESCRIPTION </b></font><br>
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<i>Getcallerpc</i> is a portable way to discover the PC to which the
current function will return. <i>Firstarg</i> should be a pointer to
the first argument to the function in question.<br>
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<p><font size=+1><b>EXAMPLE </b></font><br>
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<tt><font size=+1>void<br>
printpc(ulong arg)<br>
{<br>
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print("Called from %.8lux\n", getcallerpc(&arg));<br>
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}<br>
void<br>
main(int argc, char *argv[])<br>
{<br>
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printpc(0);<br>
printpc(0);<br>
printpc(0);<br>
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}<br>
</font></tt>
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<p><font size=+1><b>SOURCE </b></font><br>
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<tt><font size=+1>/usr/local/plan9/src/lib9/<br>
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<p><font size=+1><b>BUGS </b></font><br>
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The <i>firstarg</i> parameter should not be necessary.<br>
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