NAME

getcallerpc - fetch return PC of current function

SYNOPSIS

#include <u.h>
#include <libc.h>

ulong getcallerpc(void *firstarg)

DESCRIPTION

Getcallerpc is a portable way to discover the PC to which the current function will return. Firstarg should be a pointer to the first argument to the function in question.

EXAMPLE

void
printpc(ulong arg)
{
	print("Called from %.8lux\n", getcallerpc(&arg));
}
void
main(int argc, char *argv[])
{
	printpc(0);
	printpc(0);
	printpc(0);
}
    

SOURCE

/src/lib9/

BUGS

The firstarg parameter should not be necessary.