ref: 83d9d3003e108230c4cb8d4bef5e2e1e927c1053 dir: /lib9/getcallerpc-NetBSD-386.S/
#include <machine/asm.h> NENTRY(getcallerpc) movl 4(%esp), %eax movl -4(%eax), %eax ret END(getcallerpc)