[SOLVED] is it a top_reg or top_ref or top_local?

[Key-Real]

Code: Pascal  [Select][+][-]

1.        
2. lw      $s0,108($sp)    <- taicpu(pp).oper[0]^.typ = top_reg         $s0          this I knew
3. lw      $s1,($s0)       <- what type is $s0 is it  taicpu(pp).oper[1]^.typ = top_reg   or is it a  top_ref
4.  

if it is a top_ref how to extract the register name?

[Key-Real]

or is it:

taicpu(pp).oper[1]^.typ = top_local

and can be accessable by taicpu(pp).oper[1]^.localoper^.localindexreg ?

[Key-Real]

its:

taicpu(pp).oper[1]^.typ = top_ref

and is read by

taicpu(pp).oper[1]^.ref^.base