prom_tree_access
return (prom_tree_access(opromioctl_cb, &arg_block, &st->tree_gen));
error = prom_tree_access(create_prom_branch, &pta, NULL);
extern int prom_tree_access(int (*callback)(void *arg,
(void) prom_tree_access(sbdp_prom_get_cpu, &arg, NULL);
(void) prom_tree_access(sbdp_walk_prom_tree_start, &arg_block, NULL);
handle->error = prom_tree_access(sysc_make_list, &arg, NULL);
return (prom_tree_access(find_and_setup_cpu_start, &cpuid, NULL));