36 lines
696 B
ArmAsm
36 lines
696 B
ArmAsm
.define .aar
|
|
! use .mli2
|
|
|
|
! 2-byte descriptor elements
|
|
! any size array elements
|
|
! no range checking
|
|
! parameters:
|
|
! stack: pointer to descriptor
|
|
! index
|
|
! base address of array
|
|
! stack: result (out)
|
|
! uses .mli2 routine
|
|
! side-effect: size of array elements in bc
|
|
|
|
|
|
|
|
.aar:
|
|
pop hl ! return address
|
|
pop ix ! pointer to descr.
|
|
ex (sp),hl ! save ret. addr.
|
|
! hl := index
|
|
ld c,(ix+0) ! bc := lower bound
|
|
ld b,(ix+1)
|
|
xor a
|
|
sbc hl,bc ! hl := index-lwb
|
|
ld c,(ix+4) ! bc := size
|
|
ld b,(ix+5)
|
|
ex de,hl ! de := index-lwb
|
|
call .mli2 ! hl := bc*de =
|
|
! size*(index-lwb)
|
|
pop ix ! return address
|
|
pop de ! base
|
|
add hl,de ! addr. of element
|
|
push hl
|
|
jp (ix) ! return
|