getcallerpc - fetch return PC of current function

#include <u.h>

#include <libc.h>

uintptr getcallerpc(void *firstarg)

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. .EX void printpc(int arg) { print("Called from %p\en", getcallerpc(&arg)); } void main(int argc, char *argv[]) { printpc(0); printpc(0); printpc(0); } /sys/src/libc/$objtype/getcallerpc.[cs] The firstarg parameter should not be necessary.