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39 lines
670 B
Groff
39 lines
670 B
Groff
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.TH GETCALLERPC 3
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.SH NAME
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getcallerpc \- fetch return PC of current function
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.SH SYNOPSIS
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.br
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.B #include <u.h>
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.br
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.B #include <libc.h>
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.PP
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.B ulong getcallerpc(void *firstarg)
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.SH DESCRIPTION
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.I Getcallerpc
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is a portable way to discover the PC to which the current function will return.
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.I Firstarg
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should be a pointer to the first argument to the function in question.
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.SH EXAMPLE
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.IP
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.EX
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void
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printpc(ulong arg)
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{
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print("Called from %.8lux\en", getcallerpc(&arg));
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}
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void
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main(int argc, char *argv[])
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{
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printpc(0);
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printpc(0);
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printpc(0);
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}
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.EE
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.SH SOURCE
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.B /sys/src/libc/$objtype/getcallerpc.[cs]
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.SH BUGS
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The
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.I firstarg
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parameter should not be necessary.
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