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| <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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| </table> |
| }<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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| </table> |
| }<br> |
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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> |
| </font></tt> |
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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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