mirror of
https://github.com/irmen/prog8.git
synced 2024-09-05 20:29:08 +00:00
559 lines
11 KiB
NASM
559 lines
11 KiB
NASM
; ---- builtin functions
|
|
|
|
|
|
func_any_b_stack .proc
|
|
jsr func_any_b_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_all_b_stack .proc
|
|
jsr func_all_b_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_any_b_into_A .proc
|
|
; -- any(array), array in P8ZP_SCRATCH_W1, num bytes in A
|
|
sta _cmp_mod+1 ; self-modifying code
|
|
ldy #0
|
|
- lda (P8ZP_SCRATCH_W1),y
|
|
bne _got_any
|
|
iny
|
|
_cmp_mod cpy #255 ; modified
|
|
bne -
|
|
lda #0
|
|
rts
|
|
_got_any lda #1
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_all_b_into_A .proc
|
|
; -- all(array), array in P8ZP_SCRATCH_W1, num bytes in A
|
|
sta _cmp_mod+1 ; self-modifying code
|
|
ldy #0
|
|
- lda (P8ZP_SCRATCH_W1),y
|
|
beq _got_not_all
|
|
iny
|
|
_cmp_mod cpy #255 ; modified
|
|
bne -
|
|
lda #1
|
|
_got_not_all rts
|
|
.pend
|
|
|
|
func_any_w_into_A .proc
|
|
asl a
|
|
jmp func_any_b_into_A
|
|
.pend
|
|
|
|
func_any_w_stack .proc
|
|
asl a
|
|
jsr func_any_b_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_all_w_into_A .proc
|
|
; -- all(warray), array in P8ZP_SCRATCH_W1, num bytes in A
|
|
asl a ; times 2 because of word
|
|
sta _cmp_mod+1 ; self-modifying code
|
|
ldy #0
|
|
- lda (P8ZP_SCRATCH_W1),y
|
|
bne +
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
bne ++
|
|
lda #0
|
|
rts
|
|
+ iny
|
|
+ iny
|
|
_cmp_mod cpy #255 ; modified
|
|
bne -
|
|
lda #1
|
|
rts
|
|
.pend
|
|
|
|
func_all_w_stack .proc
|
|
jsr func_all_w_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
abs_b_stack .proc
|
|
; -- push abs(A) on stack (as unsigned word)
|
|
jsr abs_b_into_AY
|
|
sta P8ESTACK_LO,x
|
|
stz P8ESTACK_HI,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
abs_b_into_AY .proc
|
|
; -- AY = abs(A) (abs always returns unsigned word)
|
|
ldy #0
|
|
cmp #0
|
|
bmi +
|
|
rts
|
|
+ eor #$ff
|
|
clc
|
|
adc #1
|
|
rts
|
|
.pend
|
|
|
|
abs_w_stack .proc
|
|
; -- push abs(AY) on stack (as word)
|
|
jsr abs_w_into_AY
|
|
sta P8ESTACK_LO,x
|
|
tya
|
|
sta P8ESTACK_HI,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
abs_w_into_AY .proc
|
|
; -- AY = abs(AY)
|
|
cpy #0
|
|
bmi +
|
|
rts
|
|
+ eor #$ff
|
|
pha
|
|
tya
|
|
eor #$ff
|
|
tay
|
|
pla
|
|
clc
|
|
adc #1
|
|
bcc +
|
|
iny
|
|
+ rts
|
|
.pend
|
|
|
|
func_sign_b_into_A .proc
|
|
cmp #0
|
|
beq _zero
|
|
bmi _neg
|
|
lda #1
|
|
_zero rts
|
|
_neg lda #-1
|
|
rts
|
|
.pend
|
|
|
|
func_sign_b_stack .proc
|
|
jsr func_sign_b_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_sign_ub_into_A .proc
|
|
cmp #0
|
|
bne _pos
|
|
rts
|
|
_pos lda #1
|
|
rts
|
|
.pend
|
|
|
|
func_sign_ub_stack .proc
|
|
jsr func_sign_ub_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_sign_uw_into_A .proc
|
|
cpy #0
|
|
beq _possibly_zero
|
|
_pos lda #1
|
|
rts
|
|
_possibly_zero cmp #0
|
|
bne _pos
|
|
rts
|
|
.pend
|
|
|
|
func_sign_uw_stack .proc
|
|
jsr func_sign_uw_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_sign_w_into_A .proc
|
|
cpy #0
|
|
beq _possibly_zero
|
|
bmi _neg
|
|
_pos lda #1
|
|
rts
|
|
_neg lda #-1
|
|
rts
|
|
_possibly_zero cmp #0
|
|
bne _pos
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_sign_w_stack .proc
|
|
jsr func_sign_w_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_sqrt16_stack .proc
|
|
jsr func_sqrt16_into_A
|
|
sta P8ESTACK_LO,x
|
|
dex
|
|
rts
|
|
.pend
|
|
|
|
func_sqrt16_into_A .proc
|
|
; integer square root from http://6502org.wikidot.com/software-math-sqrt
|
|
sta P8ZP_SCRATCH_W1
|
|
sty P8ZP_SCRATCH_W1+1
|
|
txa
|
|
pha
|
|
lda #0
|
|
sta P8ZP_SCRATCH_B1
|
|
sta P8ZP_SCRATCH_REG
|
|
ldx #8
|
|
- sec
|
|
lda P8ZP_SCRATCH_W1+1
|
|
sbc #$40
|
|
tay
|
|
lda P8ZP_SCRATCH_REG
|
|
sbc P8ZP_SCRATCH_B1
|
|
bcc +
|
|
sty P8ZP_SCRATCH_W1+1
|
|
sta P8ZP_SCRATCH_REG
|
|
+ rol P8ZP_SCRATCH_B1
|
|
asl P8ZP_SCRATCH_W1
|
|
rol P8ZP_SCRATCH_W1+1
|
|
rol P8ZP_SCRATCH_REG
|
|
asl P8ZP_SCRATCH_W1
|
|
rol P8ZP_SCRATCH_W1+1
|
|
rol P8ZP_SCRATCH_REG
|
|
dex
|
|
bne -
|
|
pla
|
|
tax
|
|
lda P8ZP_SCRATCH_B1
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_sort_ub .proc
|
|
; 8bit unsigned sort
|
|
; sorting subroutine coded by mats rosengren (mats.rosengren@esa.int)
|
|
; input: address of array to sort in P8ZP_SCRATCH_W1, length in S
|
|
; first, put pointer BEFORE array
|
|
sta P8ZP_SCRATCH_B1
|
|
lda P8ZP_SCRATCH_W1
|
|
bne +
|
|
dec P8ZP_SCRATCH_W1+1
|
|
+ dec P8ZP_SCRATCH_W1
|
|
_sortloop ldy P8ZP_SCRATCH_B1 ;start of subroutine sort
|
|
lda (P8ZP_SCRATCH_W1),y ;last value in (what is left of) sequence to be sorted
|
|
sta P8ZP_SCRATCH_REG ;save value. will be over-written by largest number
|
|
jmp _l2
|
|
_l1 dey
|
|
beq _l3
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
cmp P8ZP_SCRATCH_W2+1
|
|
bcc _l1
|
|
_l2 sty P8ZP_SCRATCH_W2 ;index of potentially largest value
|
|
sta P8ZP_SCRATCH_W2+1 ;potentially largest value
|
|
jmp _l1
|
|
_l3 ldy P8ZP_SCRATCH_B1 ;where the largest value shall be put
|
|
lda P8ZP_SCRATCH_W2+1 ;the largest value
|
|
sta (P8ZP_SCRATCH_W1),y ;put largest value in place
|
|
ldy P8ZP_SCRATCH_W2 ;index of free space
|
|
lda P8ZP_SCRATCH_REG ;the over-written value
|
|
sta (P8ZP_SCRATCH_W1),y ;put the over-written value in the free space
|
|
dec P8ZP_SCRATCH_B1 ;end of the shorter sequence still left
|
|
bne _sortloop ;start working with the shorter sequence
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_sort_b .proc
|
|
; 8bit signed sort
|
|
; sorting subroutine coded by mats rosengren (mats.rosengren@esa.int)
|
|
; input: address of array to sort in P8ZP_SCRATCH_W1, length in A
|
|
; first, put pointer BEFORE array
|
|
sta P8ZP_SCRATCH_B1
|
|
lda P8ZP_SCRATCH_W1
|
|
bne +
|
|
dec P8ZP_SCRATCH_W1+1
|
|
+ dec P8ZP_SCRATCH_W1
|
|
_sortloop ldy P8ZP_SCRATCH_B1 ;start of subroutine sort
|
|
lda (P8ZP_SCRATCH_W1),y ;last value in (what is left of) sequence to be sorted
|
|
sta P8ZP_SCRATCH_REG ;save value. will be over-written by largest number
|
|
jmp _l2
|
|
_l1 dey
|
|
beq _l3
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
cmp P8ZP_SCRATCH_W2+1
|
|
bmi _l1
|
|
_l2 sty P8ZP_SCRATCH_W2 ;index of potentially largest value
|
|
sta P8ZP_SCRATCH_W2+1 ;potentially largest value
|
|
jmp _l1
|
|
_l3 ldy P8ZP_SCRATCH_B1 ;where the largest value shall be put
|
|
lda P8ZP_SCRATCH_W2+1 ;the largest value
|
|
sta (P8ZP_SCRATCH_W1),y ;put largest value in place
|
|
ldy P8ZP_SCRATCH_W2 ;index of free space
|
|
lda P8ZP_SCRATCH_REG ;the over-written value
|
|
sta (P8ZP_SCRATCH_W1),y ;put the over-written value in the free space
|
|
dec P8ZP_SCRATCH_B1 ;end of the shorter sequence still left
|
|
bne _sortloop ;start working with the shorter sequence
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_sort_uw .proc
|
|
; 16bit unsigned sort
|
|
; sorting subroutine coded by mats rosengren (mats.rosengren@esa.int)
|
|
; input: address of array to sort in P8ZP_SCRATCH_W1, length in A
|
|
; first: subtract 2 of the pointer
|
|
asl a
|
|
sta P8ZP_SCRATCH_B1
|
|
lda P8ZP_SCRATCH_W1
|
|
sec
|
|
sbc #2
|
|
sta P8ZP_SCRATCH_W1
|
|
bcs _sort_loop
|
|
dec P8ZP_SCRATCH_W1+1
|
|
_sort_loop ldy P8ZP_SCRATCH_B1 ;start of subroutine sort
|
|
lda (P8ZP_SCRATCH_W1),y ;last value in (what is left of) sequence to be sorted
|
|
sta _work3 ;save value. will be over-written by largest number
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
sta _work3+1
|
|
dey
|
|
jmp _l2
|
|
_l1 dey
|
|
dey
|
|
beq _l3
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
dey
|
|
cmp P8ZP_SCRATCH_W2+1
|
|
bne +
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
cmp P8ZP_SCRATCH_W2
|
|
+ bcc _l1
|
|
_l2 sty _work1 ;index of potentially largest value
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
sta P8ZP_SCRATCH_W2 ;potentially largest value
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
sta P8ZP_SCRATCH_W2+1
|
|
dey
|
|
jmp _l1
|
|
_l3 ldy P8ZP_SCRATCH_B1 ;where the largest value shall be put
|
|
lda P8ZP_SCRATCH_W2 ;the largest value
|
|
sta (P8ZP_SCRATCH_W1),y ;put largest value in place
|
|
iny
|
|
lda P8ZP_SCRATCH_W2+1
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
ldy _work1 ;index of free space
|
|
lda _work3 ;the over-written value
|
|
sta (P8ZP_SCRATCH_W1),y ;put the over-written value in the free space
|
|
iny
|
|
lda _work3+1
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
dey
|
|
dec P8ZP_SCRATCH_B1 ;end of the shorter sequence still left
|
|
dec P8ZP_SCRATCH_B1
|
|
bne _sort_loop ;start working with the shorter sequence
|
|
rts
|
|
_work1 .byte 0
|
|
_work3 .word 0
|
|
.pend
|
|
|
|
|
|
func_sort_w .proc
|
|
; 16bit signed sort
|
|
; sorting subroutine coded by mats rosengren (mats.rosengren@esa.int)
|
|
; input: address of array to sort in P8ZP_SCRATCH_W1, length in A
|
|
; first: subtract 2 of the pointer
|
|
asl a
|
|
sta P8ZP_SCRATCH_B1
|
|
lda P8ZP_SCRATCH_W1
|
|
sec
|
|
sbc #2
|
|
sta P8ZP_SCRATCH_W1
|
|
bcs _sort_loop
|
|
dec P8ZP_SCRATCH_W1+1
|
|
_sort_loop ldy P8ZP_SCRATCH_B1 ;start of subroutine sort
|
|
lda (P8ZP_SCRATCH_W1),y ;last value in (what is left of) sequence to be sorted
|
|
sta _work3 ;save value. will be over-written by largest number
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
sta _work3+1
|
|
dey
|
|
jmp _l2
|
|
_l1 dey
|
|
dey
|
|
beq _l3
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
cmp P8ZP_SCRATCH_W2
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
dey
|
|
sbc P8ZP_SCRATCH_W2+1
|
|
bvc +
|
|
eor #$80
|
|
+ bmi _l1
|
|
_l2 sty _work1 ;index of potentially largest value
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
sta P8ZP_SCRATCH_W2 ;potentially largest value
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
sta P8ZP_SCRATCH_W2+1
|
|
dey
|
|
jmp _l1
|
|
_l3 ldy P8ZP_SCRATCH_B1 ;where the largest value shall be put
|
|
lda P8ZP_SCRATCH_W2 ;the largest value
|
|
sta (P8ZP_SCRATCH_W1),y ;put largest value in place
|
|
iny
|
|
lda P8ZP_SCRATCH_W2+1
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
ldy _work1 ;index of free space
|
|
lda _work3 ;the over-written value
|
|
sta (P8ZP_SCRATCH_W1),y ;put the over-written value in the free space
|
|
iny
|
|
lda _work3+1
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
dey
|
|
dec P8ZP_SCRATCH_B1 ;end of the shorter sequence still left
|
|
dec P8ZP_SCRATCH_B1
|
|
bne _sort_loop ;start working with the shorter sequence
|
|
rts
|
|
_work1 .byte 0
|
|
_work3 .word 0
|
|
.pend
|
|
|
|
|
|
func_reverse_b .proc
|
|
; --- reverse an array of bytes (in-place)
|
|
; inputs: pointer to array in P8ZP_SCRATCH_W1, length in A
|
|
_index_right = P8ZP_SCRATCH_W2
|
|
_index_left = P8ZP_SCRATCH_W2+1
|
|
_loop_count = P8ZP_SCRATCH_REG
|
|
sta _loop_count
|
|
lsr _loop_count
|
|
sec
|
|
sbc #1
|
|
sta _index_right
|
|
lda #0
|
|
sta _index_left
|
|
_loop ldy _index_right
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
pha
|
|
ldy _index_left
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
ldy _index_right
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
pla
|
|
ldy _index_left
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
inc _index_left
|
|
dec _index_right
|
|
dec _loop_count
|
|
bne _loop
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_reverse_w .proc
|
|
; --- reverse an array of words (in-place)
|
|
; inputs: pointer to array in P8ZP_SCRATCH_W1, length in A
|
|
_index_first = P8ZP_SCRATCH_W2
|
|
_index_second = P8ZP_SCRATCH_W2+1
|
|
_loop_count = P8ZP_SCRATCH_REG
|
|
pha
|
|
asl a ; *2 because words
|
|
sec
|
|
sbc #2
|
|
sta _index_first
|
|
lda #0
|
|
sta _index_second
|
|
pla
|
|
lsr a
|
|
pha
|
|
sta _loop_count
|
|
; first reverse the lsbs
|
|
_loop_lo ldy _index_first
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
pha
|
|
ldy _index_second
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
ldy _index_first
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
pla
|
|
ldy _index_second
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
inc _index_second
|
|
inc _index_second
|
|
dec _index_first
|
|
dec _index_first
|
|
dec _loop_count
|
|
bne _loop_lo
|
|
; now reverse the msbs
|
|
dec _index_second
|
|
inc _index_first
|
|
inc _index_first
|
|
inc _index_first
|
|
pla
|
|
sta _loop_count
|
|
_loop_hi ldy _index_first
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
pha
|
|
ldy _index_second
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
ldy _index_first
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
pla
|
|
ldy _index_second
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
dec _index_second
|
|
dec _index_second
|
|
inc _index_first
|
|
inc _index_first
|
|
dec _loop_count
|
|
bne _loop_hi
|
|
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_peekw .proc
|
|
; -- read the word value on the address in AY
|
|
sta P8ZP_SCRATCH_W1
|
|
sty P8ZP_SCRATCH_W1+1
|
|
ldy #0
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
pha
|
|
iny
|
|
lda (P8ZP_SCRATCH_W1),y
|
|
tay
|
|
pla
|
|
rts
|
|
.pend
|
|
|
|
|
|
func_pokew .proc
|
|
; -- store the word value in AY in the address in P8ZP_SCRATCH_W1
|
|
sty P8ZP_SCRATCH_REG
|
|
ldy #0
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
iny
|
|
lda P8ZP_SCRATCH_REG
|
|
sta (P8ZP_SCRATCH_W1),y
|
|
rts
|
|
.pend
|