内存读写错误？

Question

单步调试到GETMEM.INC的 
mov TSmallBlockPoolHeader[ecx].PreviousPartiallyFreePool, edx
这段汇编代码处，但是汇编代码不太懂，所以看不明白

Answer 1

@SmallPoolWasFull:
  {Insert this as the first partially free pool for the block size}
  mov ecx, TSmallBlockType[ebx].NextPartiallyFreePool
  mov TSmallBlockPoolHeader[edx].PreviousPartiallyFreePool, ebx
  mov TSmallBlockPoolHeader[edx].NextPartiallyFreePool, ecx
  mov TSmallBlockPoolHeader[ecx].PreviousPartiallyFreePool, edx
  mov TSmallBlockType[ebx].NextPartiallyFreePool, edx
  {Unlock the block type}
  mov TSmallBlockType[ebx].BlockTypeLocked, False
  {All ok}
  xor eax, eax
  {Restore registers}
  pop ebx
  {Done}
  ret
  {Align branch target}
  nop
  nop就是这段代码