sbuf_bcat
sbuf_bcat(mt->sbuf[mt->level], b, e-b+1);
sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
sbuf_bcat(*sb, s, 1);
sbuf_bcat(sb, &hdr, sizeof(hdr));
sbuf_bcat(sb, cm->cm_req, 128);
sbuf_bcat(sb, chain->chain, 128);
sbuf_bcat(sb, buf, buf_len);
return (sbuf_bcat(s, buf, len));
int sbuf_bcat(struct sbuf *, const void *, size_t);
sbuf_bcat(sb, base, len);
sbuf_bcat(sb, base, p - base);