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even smaller BMW224/256 (1988 bytes)

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bg 2010-04-05 13:55:11 +00:00
parent 267cb0a0d1
commit 03f98ddd20
1 changed files with 41 additions and 40 deletions
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81
bmw/bmw_small-tinyasm.S
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@ -122,41 +122,45 @@ eor_r22_in_r16:
param s: r20
*/
sn:
push_range 12, 20
push_range 2, 5
push r17
push r19
ldi r30, lo8(s_table)
ldi r31, hi8(s_table)
lsl r20
lsl r20
add r30, r20
adc r31, r1
movw r12, r22
movw r14, r24
movw r2, r22
movw r4, r24
lpm r20, Z+
rcall shiftright32
movw r16, r22
movw r18, r24
;---
movw r22, r12
movw r24, r14
movw r22, r2
movw r24, r4
lpm r20, Z+
rcall shiftleft32
rcall eor_r22_in_r16
;---
movw r22, r12
movw r24, r14
movw r22, r2
movw r24, r4
lpm r20, Z+
rcall rotateleft32
rcall eor_r22_in_r16
;---
movw r22, r12
movw r24, r14
movw r22, r2
movw r24, r4
lpm r20, Z+
rcall rotateleft32
eor r22, r16
eor r23, r17
eor r24, r18
eor r25, r19
pop_range 12, 20
pop r19
pop r17
pop_range 2, 5
ret
/******************************************************************************/
@ -236,6 +240,17 @@ load32_from_Y:
ld r24, Y+
ld r25, Y+
ret
add_X_to_32:
ld r0, X+
add r22, r0
ld r0, X+
adc r23, r0
ld r0, X+
adc r24, r0
ld r0, X+
adc r25, r0
ret
/******************************************************************************/
/*
param q: r28:r29 (Y)
@ -345,14 +360,7 @@ f0:
rcall sn
movw r30, r2
ld r0, X+
add r22, r0
ld r0, X+
adc r23, r0
ld r0, X+
adc r24, r0
ld r0, X+
adc r25, r0
rcall add_X_to_32
st Y+, r22
st Y+, r23
@ -369,19 +377,15 @@ f0:
rcall sn
movw r30, r2
movw r26, h0
ld r0, X+
add r22, r0
ld r0, X+
adc r23, r0
ld r0, X+
adc r24, r0
ld r0, X+
adc r25, r0
rcall add_X_to_32
sbiw r26, 4
st Y+, r22
st Y+, r23
st Y+, r24
st Y+, r25
std Y+0, r22
std Y+1, r23
std Y+2, r24
std Y+3, r25
sbiw r28, 15*4
movw r20, h0
movw r22, m0
ret
/******************************************************************************/
@ -627,6 +631,9 @@ f1:
inc r17
sbrs r17, 4
rjmp 10b
movw r24, r2
movw r22, r4
movw r20, r6
ret
/******************************************************************************/
@ -860,8 +867,8 @@ bmw256_nextBlock:
push_range 2, 17
stack_alloc_large 32*4, r28, r29
adiw r28, 1
push_range 28, 29 /* push Q */
push_range 22, 25 /* push M & H */
; push_range 28, 29 /* push Q */
; push_range 22, 25 /* push M & H */
/* increment counter */
movw r26, r24
movw r2, r26
@ -882,20 +889,14 @@ bmw256_nextBlock:
movw r26, r24
rcall f0
/* call f1*/
pop r21
pop r20
pop r23
pop r22
pop r25
pop r24
movw r24, r28
; rcall printQ
push_range 20, 25
rcall f1
/* call f2 */
; pop_range 20, 25
; push_range 20, 25
; rcall printQ
pop_range 20, 25
; push r20
; push r21
call f2