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further shrinked bmw tiny to 1714 bytes

This commit is contained in:
bg 2010-04-15 07:05:29 +00:00
parent e1455a81c4
commit cecf2faff1
1 changed files with 64 additions and 84 deletions
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148
bmw/bmw_small-tinyasm.S
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@ -28,6 +28,11 @@
#include "avr-asm-macros.S"
acc2 = 8
acc3 = 9
acc0 = 14
acc1 = 15
/******************************************************************************/
/*
param a: r22:r23:r24:r25
@ -91,6 +96,7 @@ bitrotateleft_1:
breq 20f
10:
lsl r0
rol32:
rol r22
rol r23
rol r24
@ -102,6 +108,18 @@ bitrotateleft_1:
/******************************************************************************/
sn_stub:
movw r22, r2
movw r24, r4
lpm r20, Z+
rcall rotateleft32
eor32_to_acc:
eor acc0, r22
eor acc1, r23
eor acc2, r24
eor acc3, r25
ret
s_table:
s0: .byte 1, 3, 4,19
s1: .byte 1, 2, 8,23
@ -117,14 +135,10 @@ s3: .byte 0xAF, 29
s4: .byte 0x00, 0
s5: .byte 0x80, 0
*/
acc2 = 8
acc3 = 9
h0 = 10
h1 = 11
m0 = 12
m1 = 13
acc0 = 14
acc1 = 15
/*
param x: r22:r23:r24:25
@ -155,17 +169,9 @@ sn:
rcall shiftleft32
rcall eor32_to_acc
;---
movw r22, r2
movw r24, r4
lpm r20, Z+
rcall rotateleft32
rcall eor32_to_acc
;---
movw r22, r2
movw r24, r4
lpm r20, Z+
rcall rotateleft32
rcall eor32_to_acc
rcall sn_stub
rcall sn_stub
movw r22, acc0
movw r24, acc2
pop acc3
@ -236,13 +242,6 @@ add_X_to_32:
adc r25, r0
ret
store_acc_to_dec_X:
st -X, acc3
st -X, acc2
st -X, acc1
st -X, acc0
ret
store32_to_X:
st X+, r22
st X+, r23
@ -290,20 +289,6 @@ m1 = 13
acc0 = 14
acc1 = 15
add32_to_acc:
add acc0, r22
adc acc1, r23
adc acc2, r24
adc acc3, r25
ret
eor32_to_acc:
eor acc0, r22
eor acc1, r23
eor acc2, r24
eor acc3, r25
ret
load_acc_from_X:
ld acc0, X+
ld acc1, X+
@ -327,6 +312,7 @@ add_acc_to_Z:
ret
load_rotate_add_M:
mov r20, j
andi r20, 0x0f
mov r0, r20
lsl r0
@ -361,33 +347,33 @@ addelement:
rcall store_acc_to_dec_X
adiw r26, 4
clt
mov r20, j
rcall load_rotate_add_M
mov r20, j
subi r20, -3
subi j, -3
rcall load_rotate_add_M
mov r20, j
set
subi r20, -10
subi j, -7
rcall load_rotate_add_M
lsl j
lsl j
subi j, -7*4
subi j, -7*4+10*4
andi j, 0x3f
movw r26, h0
add r26, j
adc r27, r1
rcall load32_from_X
rcall eor32_to_acc
rjmp eor32_to_acc
;---
ret
/******************************************************************************/
load_sn_add:
rcall load32_from_X
rcall sn
rjmp add32_to_acc
; ret
add32_to_acc:
add acc0, r22
adc acc1, r23
adc acc2, r24
adc acc3, r25
ret
/*
param q: r26:r27
@ -458,8 +444,12 @@ expand2:
rcall load_sn_add
expand2_exit:
adiw r26, 4
rjmp store_acc_to_dec_X
; ret
store_acc_to_dec_X:
st -X, acc3
st -X, acc2
st -X, acc1
st -X, acc0
ret
/******************************************************************************/
/*
@ -998,11 +988,9 @@ bmw256_lastBlock:
rcall load32_from_Z_stub
410:
clr r25
ldi r20, 1
lsl r21
rol r22
rol r23
rol r24
rol r25
rcall rol32
mov r20, len0
add r21, len1
adc r22, r1
@ -1068,10 +1056,9 @@ bmw256_lastBlock:
*/
.global bmw224_ctx2hash
bmw224_ctx2hash:
movw r26, r24
movw r30, r22
adiw r30, 9*4
ldi r22, 28
ldi r18, 28
rjmp 1f
/*******************************************************************************
@ -1084,14 +1071,13 @@ bmw224_ctx2hash:
*/
.global bmw256_ctx2hash
bmw256_ctx2hash:
movw r26, r24
movw r30, r22
adiw r30, 8*4
ldi r22, 32
1:
ld r23, Z+
ldi r18, 32
1: movw r26, r24
1: ld r23, Z+
st X+, r23
dec r22
dec r18
brne 1b
ret
@ -1229,36 +1215,30 @@ c2h_lut:
*/
.global bmw224_init
bmw224_init:
movw r26, r24
ldi r22, 0x03
ldi r23, 0x02
ldi r24, 0x01
ldi r25, 0x00
ldi r22, 0x00
ldi r23, 0x40
bmw_small_init:
rcall store32_to_X
ldi r18, 16-1
ldi r20, 0x04
1:
add r22, r20
adc r23, r20
adc r24, r20
adc r25, r20
rcall store32_to_X
dec r18
brne 1b
st X+, r1
st X+, r1
st X+, r1
st X+, r1
movw r26, r24
adiw r26, 4
10:
st -X, r22
inc r22
mov r20, r22
andi r20, 0x3
brne 10b
adiw r26, 8
20: cp r22, r23
brne 10b
st -X, r1
st -X, r1
st -X, r1
st -X, r1
ret
.global bmw256_init
bmw256_init:
movw r26, r24
ldi r22, 0x43
ldi r23, 0x42
ldi r24, 0x41
ldi r25, 0x40
ldi r22, 0x40
ldi r23, 0x80
rjmp bmw_small_init