gp_av *(SV**)&GvAV(bstate->bs_sv) svindex
gp_hv *(SV**)&GvHV(bstate->bs_sv) svindex
gp_cv *(SV**)&GvCV(bstate->bs_sv) svindex
-gp_file GvFILE(bstate->bs_sv) pvindex
+gp_file bstate->bs_sv pvindex x
gp_io *(SV**)&GvIOp(bstate->bs_sv) svindex
gp_form *(SV**)&GvFORM(bstate->bs_sv) svindex
gp_cvgen GvCVGEN(bstate->bs_sv) U32