请教 end_of_kd bstack end_bstack 的具体意义是什么？

ytwolf007

52259：
MEMORY
{

   vectorrom   (RX): ORIGIN = 0x00004000, LENGTH = 0x00000400
   cfmprotrom  (RX): ORIGIN = 0x00000400, LENGTH = 0x00000020
   rom         (RX): ORIGIN = 0x00004500, LENGTH = 0x00070000  # Code + Const data   
   
   ram         (RW): ORIGIN = 0x10000000, LENGTH = 0x00080000  # SRAM - RW data
   # kernel space starts after RAM variables (Location of MQX Kernel data + MQX heap)
   end_of_kd   (RW): ORIGIN = 0x2000FFF0, LENGTH = 0x00000000
  
   # Boot stack reused by MQX Kernel data
   bstack      (RW): ORIGIN = 0x2000FA00, LENGTH = 0x00000200  # Boot stack
   end_bstack  (RW): ORIGIN = 0x2000FBFF, LENGTH = 0x00000000
}
 
基地址0x20000000 的64K 内存为片内内存。
   # kernel space starts after RAM variables (Location of MQX Kernel data + MQX heap)
   end_of_kd   (RW): ORIGIN = 0x2000FFF0, LENGTH = 0x00000000
  
   # Boot stack reused by MQX Kernel data
   bstack      (RW): ORIGIN = 0x2000FA00, LENGTH = 0x00000200  # Boot stack
   end_bstack  (RW): ORIGIN = 0x2000FBFF, LENGTH = 0x00000000
这几行的具体用处是什么？每个任务都单独分配堆栈了，还要为MQX单独分配堆和数据吗？从哪里可以了解到这几行的作用？

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kap

boot stack，启动时用的临时stack。在os启动起来之前，也会调用函数、用局部变量。