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avr-crypto-lib
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further shrinked bmw tiny to 1750 bytes

This commit is contained in:
bg 2010-04-14 12:31:22 +00:00
parent 709c694818
commit e1455a81c4
1 changed files with 14 additions and 14 deletions
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28
bmw/bmw_small-tinyasm.S
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@ -338,8 +338,8 @@ load_rotate_add_M:
inc r20
rcall rotateleft32
brts 10f
rcall add32_to_acc
ret
rjmp add32_to_acc
; ret
10: sub acc0, r22
sbc acc1, r23
sbc acc2, r24
@ -386,8 +386,8 @@ addelement:
load_sn_add:
rcall load32_from_X
rcall sn
rcall add32_to_acc
ret
rjmp add32_to_acc
; ret
/*
param q: r26:r27
@ -397,11 +397,12 @@ load_sn_add:
*/
expand_intro:
push_range 20, 27
; push r24
push_range 26, 27
push r24
rcall addelement
; pop r24
pop_range 20, 27
pop r24
pop_range 26, 27
lsl r24
lsl r24
add r26, r24
@ -457,8 +458,8 @@ expand2:
rcall load_sn_add
expand2_exit:
adiw r26, 4
rcall store_acc_to_dec_X
ret
rjmp store_acc_to_dec_X
; ret
/******************************************************************************/
/*
@ -932,15 +933,14 @@ bmw256_lastBlock:
memcpy(pctx.buffer, block, (length_b+7)/8);
pctx.buffer[length_b>>3] |= 0x80 >> (length_b&0x07);
*/ movw r24, len0
ldi r23, 63
movw r26, blc0
lsr r25
ror r24
lsr r24
lsr r24
ldi r23, 63
sub r23, r24
movw r26, blc0
tst r24
breq 301f
sub r23, r24
/* copy (#r24) bytes to stack buffer */
30: ld r20, X+
st Z+, r20