  pushb_pos: delta 4, top32 0x00000022
  pushb_neg: delta 4, top32 0xffffffee
  pushw_neg: delta 2, top32 0x55553344
  pushw_pos: delta 2, top32 0x5555ddcc
  pushl_pos: delta 4, top32 0x67675656
  pushl_neg: delta 4, top32 0x98988787
66pushb_pos: delta 2, top32 0x55550022
66pushb_neg: delta 2, top32 0x5555ffee
