ref: 4a1fc5ccb596a0f88f465b81a638f0068e82f0b9 dir: /lib9/getcallerpc-NetBSD-386.S/
#include <machine/asm.h> NENTRY(getcallerpc) movl 4(%esp), %eax movl -4(%eax), %eax ret END(getcallerpc)