gdb结构体格式化输出

(gdb) set print pretty on
(gdb) p *plat
$7 = {
  opensbi_version = 5,
  platform_version = 1,
  name = "QEMU Virt Machine", ‘\000‘ <repeats 46 times>,
  features = 61,
  hart_count = 8,
  hart_stack_size = 8192,
  disabled_hart_mask = 0,
  tlb_range_flush_limit = 0,
  platform_ops_addr = 2147530432,
  firmware_context = 0
}