ref: 8e98429e02e837d3e31bcc16e6280c9e6c5c3a24 dir: /sys/src/cmd/unix/drawterm/posix-sun4u/getcallerpc.c/
#include "u.h" #include "libc.h" ulong getcallerpc(void *a) { return ((ulong*)a)[-1]; }