blob: 8fc86d8cb5d8865eaa672efb03bd84adce67fee9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
.TH GETCALLERPC 3
.SH NAME
getcallerpc \- fetch return PC of current function
.SH SYNOPSIS
.br
.B #include <u.h>
.br
.B #include <libc.h>
.PP
.B ulong getcallerpc(void *firstarg)
.SH DESCRIPTION
.I Getcallerpc
is a portable way to discover the PC to which the current function will return.
.I Firstarg
should be a pointer to the first argument to the function in question.
.SH EXAMPLE
.IP
.EX
void
printpc(ulong arg)
{
print("Called from %.8lux\en", getcallerpc(&arg));
}
void
main(int argc, char *argv[])
{
printpc(0);
printpc(0);
printpc(0);
}
.EE
.SH SOURCE
.B /sys/src/libc/$objtype/getcallerpc.[cs]
.SH BUGS
The
.I firstarg
parameter should not be necessary.
|