ref: c116550e6a41572796e4db65e4f6acbcb3d9d6f8 dir: /lib9/getcallerpc-NetBSD-386.S/
#include <machine/asm.h> NENTRY(getcallerpc) movl 4(%esp), %eax movl -4(%eax), %eax ret END(getcallerpc)