How to set the result of "x/1xw 0x<address>" to a gdb variable ??

Hi all,

I am stuck at the middle of no where, please help me out. This is the problem:
I can get the content of certain memory address with the command
"x/nfu <address>", but I am having trouble of saving the return value
to a gdb variable (say $returnVal).

eg.
(gdb)  x/1xw $pde_ptr
0x37c000:    0x003b1027
(gdb) set $tmp = x/1xw $pde_ptr
Invalid number "1xw"

Is it even possible of doing that ??

Thanks in advance,
--
James Yu (游家慶)
+886-932-353-055
[email protected]