;Implementation of SoftMMU - xgetsize
;====================================

.global xgetsize

;--------
 xgetsize:
;--------

  ldy $04,x       ;get tsp struct pointer

#ifndef always_sane
  txa             ;sanity check...
  cmp (lk_tsp),y  ;make sure we're pointing to each other
  bne insane
#endif

  iny             ;advance to ending address
  iny
  iny
  sec
  lda (lk_tsp),y
  dey
  dey
  sbc (lk_tsp),y  ;subtract starting address
  pha
  iny
  iny
  iny
  lda (lk_tsp),y  ;and do the high bytes
  dey
  dey
  sbc (lk_tsp),y
  tya             ;high byte in .Y
  pla             ;low byte in .A
  clc             ;no error
  rts

#ifndef always_sane
insane:
  jmp catcherr
#endif