# allows to merge logical or arithmetic operation with shift or rotate
# in one instruction and emit combined result every cycle. The module
# is endian-neutral. The performance is ~42 cycles/byte for 128-bit
-# key.
+# key [on single-issue Xscale PXA250 core].
# May 2007.
#
# AES_set_[en|de]crypt_key is added.
+# July 2010.
+#
+# Rescheduling for dual-issue pipeline resulted in 12% improvement on
+# Cortex A8 core and ~25 cycles per byte processed with 128-bit key.
+
while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
open STDOUT,">$output";
ldrb $t2,[$rounds,#1]
ldrb $t3,[$rounds,#0]
orr $s0,$s0,$t1,lsl#8
- orr $s0,$s0,$t2,lsl#16
- orr $s0,$s0,$t3,lsl#24
ldrb $s1,[$rounds,#7]
+ orr $s0,$s0,$t2,lsl#16
ldrb $t1,[$rounds,#6]
+ orr $s0,$s0,$t3,lsl#24
ldrb $t2,[$rounds,#5]
ldrb $t3,[$rounds,#4]
orr $s1,$s1,$t1,lsl#8
- orr $s1,$s1,$t2,lsl#16
- orr $s1,$s1,$t3,lsl#24
ldrb $s2,[$rounds,#11]
+ orr $s1,$s1,$t2,lsl#16
ldrb $t1,[$rounds,#10]
+ orr $s1,$s1,$t3,lsl#24
ldrb $t2,[$rounds,#9]
ldrb $t3,[$rounds,#8]
orr $s2,$s2,$t1,lsl#8
- orr $s2,$s2,$t2,lsl#16
- orr $s2,$s2,$t3,lsl#24
ldrb $s3,[$rounds,#15]
+ orr $s2,$s2,$t2,lsl#16
ldrb $t1,[$rounds,#14]
+ orr $s2,$s2,$t3,lsl#24
ldrb $t2,[$rounds,#13]
ldrb $t3,[$rounds,#12]
orr $s3,$s3,$t1,lsl#8
mov $t3,$s0,lsr#8
strb $t1,[$rounds,#0]
strb $t2,[$rounds,#1]
- strb $t3,[$rounds,#2]
- strb $s0,[$rounds,#3]
mov $t1,$s1,lsr#24
+ strb $t3,[$rounds,#2]
mov $t2,$s1,lsr#16
+ strb $s0,[$rounds,#3]
mov $t3,$s1,lsr#8
strb $t1,[$rounds,#4]
strb $t2,[$rounds,#5]
- strb $t3,[$rounds,#6]
- strb $s1,[$rounds,#7]
mov $t1,$s2,lsr#24
+ strb $t3,[$rounds,#6]
mov $t2,$s2,lsr#16
+ strb $s1,[$rounds,#7]
mov $t3,$s2,lsr#8
strb $t1,[$rounds,#8]
strb $t2,[$rounds,#9]
- strb $t3,[$rounds,#10]
- strb $s2,[$rounds,#11]
mov $t1,$s3,lsr#24
+ strb $t3,[$rounds,#10]
mov $t2,$s3,lsr#16
+ strb $s2,[$rounds,#11]
mov $t3,$s3,lsr#8
strb $t1,[$rounds,#12]
strb $t2,[$rounds,#13]
.align 2
_armv4_AES_encrypt:
str lr,[sp,#-4]! @ push lr
- ldr $t1,[$key],#16
- ldr $t2,[$key,#-12]
- ldr $t3,[$key,#-8]
- ldr $i1,[$key,#-4]
- ldr $rounds,[$key,#240-16]
+ ldmia $key!,{$t1-$i1}
eor $s0,$s0,$t1
+ ldr $rounds,[$key,#240-16]
eor $s1,$s1,$t2
eor $s2,$s2,$t3
eor $s3,$s3,$i1
sub $rounds,$rounds,#1
mov lr,#255
-.Lenc_loop:
+ and $i1,lr,$s0
and $i2,lr,$s0,lsr#8
and $i3,lr,$s0,lsr#16
- and $i1,lr,$s0
mov $s0,$s0,lsr#24
+.Lenc_loop:
ldr $t1,[$tbl,$i1,lsl#2] @ Te3[s0>>0]
- ldr $s0,[$tbl,$s0,lsl#2] @ Te0[s0>>24]
- ldr $t2,[$tbl,$i2,lsl#2] @ Te2[s0>>8]
- ldr $t3,[$tbl,$i3,lsl#2] @ Te1[s0>>16]
-
and $i1,lr,$s1,lsr#16 @ i0
+ ldr $t2,[$tbl,$i2,lsl#2] @ Te2[s0>>8]
and $i2,lr,$s1
+ ldr $t3,[$tbl,$i3,lsl#2] @ Te1[s0>>16]
and $i3,lr,$s1,lsr#8
+ ldr $s0,[$tbl,$s0,lsl#2] @ Te0[s0>>24]
mov $s1,$s1,lsr#24
+
ldr $i1,[$tbl,$i1,lsl#2] @ Te1[s1>>16]
- ldr $s1,[$tbl,$s1,lsl#2] @ Te0[s1>>24]
ldr $i2,[$tbl,$i2,lsl#2] @ Te3[s1>>0]
ldr $i3,[$tbl,$i3,lsl#2] @ Te2[s1>>8]
eor $s0,$s0,$i1,ror#8
- eor $s1,$s1,$t1,ror#24
- eor $t2,$t2,$i2,ror#8
- eor $t3,$t3,$i3,ror#8
-
+ ldr $s1,[$tbl,$s1,lsl#2] @ Te0[s1>>24]
and $i1,lr,$s2,lsr#8 @ i0
+ eor $t2,$t2,$i2,ror#8
and $i2,lr,$s2,lsr#16 @ i1
+ eor $t3,$t3,$i3,ror#8
and $i3,lr,$s2
- mov $s2,$s2,lsr#24
+ eor $s1,$s1,$t1,ror#24
ldr $i1,[$tbl,$i1,lsl#2] @ Te2[s2>>8]
+ mov $s2,$s2,lsr#24
+
ldr $i2,[$tbl,$i2,lsl#2] @ Te1[s2>>16]
- ldr $s2,[$tbl,$s2,lsl#2] @ Te0[s2>>24]
ldr $i3,[$tbl,$i3,lsl#2] @ Te3[s2>>0]
eor $s0,$s0,$i1,ror#16
- eor $s1,$s1,$i2,ror#8
- eor $s2,$s2,$t2,ror#16
- eor $t3,$t3,$i3,ror#16
-
+ ldr $s2,[$tbl,$s2,lsl#2] @ Te0[s2>>24]
and $i1,lr,$s3 @ i0
+ eor $s1,$s1,$i2,ror#8
and $i2,lr,$s3,lsr#8 @ i1
+ eor $t3,$t3,$i3,ror#16
and $i3,lr,$s3,lsr#16 @ i2
- mov $s3,$s3,lsr#24
+ eor $s2,$s2,$t2,ror#16
ldr $i1,[$tbl,$i1,lsl#2] @ Te3[s3>>0]
+ mov $s3,$s3,lsr#24
+
ldr $i2,[$tbl,$i2,lsl#2] @ Te2[s3>>8]
ldr $i3,[$tbl,$i3,lsl#2] @ Te1[s3>>16]
- ldr $s3,[$tbl,$s3,lsl#2] @ Te0[s3>>24]
eor $s0,$s0,$i1,ror#24
+ ldr $s3,[$tbl,$s3,lsl#2] @ Te0[s3>>24]
eor $s1,$s1,$i2,ror#16
+ ldr $i1,[$key],#16
eor $s2,$s2,$i3,ror#8
+ ldr $t1,[$key,#-12]
eor $s3,$s3,$t3,ror#8
- ldr $t1,[$key],#16
- ldr $t2,[$key,#-12]
- ldr $t3,[$key,#-8]
- ldr $i1,[$key,#-4]
- eor $s0,$s0,$t1
- eor $s1,$s1,$t2
- eor $s2,$s2,$t3
- eor $s3,$s3,$i1
+ ldr $t2,[$key,#-8]
+ eor $s0,$s0,$i1
+ ldr $t3,[$key,#-4]
+ and $i1,lr,$s0
+ eor $s1,$s1,$t1
+ and $i2,lr,$s0,lsr#8
+ eor $s2,$s2,$t2
+ and $i3,lr,$s0,lsr#16
+ eor $s3,$s3,$t3
+ mov $s0,$s0,lsr#24
subs $rounds,$rounds,#1
bne .Lenc_loop
add $tbl,$tbl,#2
- and $i1,lr,$s0
- and $i2,lr,$s0,lsr#8
- and $i3,lr,$s0,lsr#16
- mov $s0,$s0,lsr#24
ldrb $t1,[$tbl,$i1,lsl#2] @ Te4[s0>>0]
- ldrb $s0,[$tbl,$s0,lsl#2] @ Te4[s0>>24]
- ldrb $t2,[$tbl,$i2,lsl#2] @ Te4[s0>>8]
- ldrb $t3,[$tbl,$i3,lsl#2] @ Te4[s0>>16]
-
and $i1,lr,$s1,lsr#16 @ i0
+ ldrb $t2,[$tbl,$i2,lsl#2] @ Te4[s0>>8]
and $i2,lr,$s1
+ ldrb $t3,[$tbl,$i3,lsl#2] @ Te4[s0>>16]
and $i3,lr,$s1,lsr#8
+ ldrb $s0,[$tbl,$s0,lsl#2] @ Te4[s0>>24]
mov $s1,$s1,lsr#24
+
ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s1>>16]
- ldrb $s1,[$tbl,$s1,lsl#2] @ Te4[s1>>24]
ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s1>>0]
ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s1>>8]
eor $s0,$i1,$s0,lsl#8
- eor $s1,$t1,$s1,lsl#24
- eor $t2,$i2,$t2,lsl#8
- eor $t3,$i3,$t3,lsl#8
-
+ ldrb $s1,[$tbl,$s1,lsl#2] @ Te4[s1>>24]
and $i1,lr,$s2,lsr#8 @ i0
+ eor $t2,$i2,$t2,lsl#8
and $i2,lr,$s2,lsr#16 @ i1
+ eor $t3,$i3,$t3,lsl#8
and $i3,lr,$s2
- mov $s2,$s2,lsr#24
+ eor $s1,$t1,$s1,lsl#24
ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s2>>8]
+ mov $s2,$s2,lsr#24
+
ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s2>>16]
- ldrb $s2,[$tbl,$s2,lsl#2] @ Te4[s2>>24]
ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s2>>0]
eor $s0,$i1,$s0,lsl#8
- eor $s1,$s1,$i2,lsl#16
- eor $s2,$t2,$s2,lsl#24
- eor $t3,$i3,$t3,lsl#8
-
+ ldrb $s2,[$tbl,$s2,lsl#2] @ Te4[s2>>24]
and $i1,lr,$s3 @ i0
+ eor $s1,$s1,$i2,lsl#16
and $i2,lr,$s3,lsr#8 @ i1
+ eor $t3,$i3,$t3,lsl#8
and $i3,lr,$s3,lsr#16 @ i2
- mov $s3,$s3,lsr#24
+ eor $s2,$t2,$s2,lsl#24
ldrb $i1,[$tbl,$i1,lsl#2] @ Te4[s3>>0]
+ mov $s3,$s3,lsr#24
+
ldrb $i2,[$tbl,$i2,lsl#2] @ Te4[s3>>8]
ldrb $i3,[$tbl,$i3,lsl#2] @ Te4[s3>>16]
- ldrb $s3,[$tbl,$s3,lsl#2] @ Te4[s3>>24]
eor $s0,$i1,$s0,lsl#8
+ ldrb $s3,[$tbl,$s3,lsl#2] @ Te4[s3>>24]
+ ldr $i1,[$key,#0]
eor $s1,$s1,$i2,lsl#8
+ ldr $t1,[$key,#4]
eor $s2,$s2,$i3,lsl#16
+ ldr $t2,[$key,#8]
eor $s3,$t3,$s3,lsl#24
+ ldr $t3,[$key,#12]
- ldr lr,[sp],#4 @ pop lr
- ldr $t1,[$key,#0]
- ldr $t2,[$key,#4]
- ldr $t3,[$key,#8]
- ldr $i1,[$key,#12]
- eor $s0,$s0,$t1
- eor $s1,$s1,$t2
- eor $s2,$s2,$t3
- eor $s3,$s3,$i1
+ eor $s0,$s0,$i1
+ eor $s1,$s1,$t1
+ eor $s2,$s2,$t2
+ eor $s3,$s3,$t3
sub $tbl,$tbl,#2
- mov pc,lr @ return
+ ldr pc,[sp],#4 @ pop and return
.size _armv4_AES_encrypt,.-_armv4_AES_encrypt
.global AES_set_encrypt_key
ldrb $t2,[$rounds,#1]
ldrb $t3,[$rounds,#0]
orr $s0,$s0,$t1,lsl#8
- orr $s0,$s0,$t2,lsl#16
- orr $s0,$s0,$t3,lsl#24
ldrb $s1,[$rounds,#7]
+ orr $s0,$s0,$t2,lsl#16
ldrb $t1,[$rounds,#6]
+ orr $s0,$s0,$t3,lsl#24
ldrb $t2,[$rounds,#5]
ldrb $t3,[$rounds,#4]
orr $s1,$s1,$t1,lsl#8
- orr $s1,$s1,$t2,lsl#16
- orr $s1,$s1,$t3,lsl#24
ldrb $s2,[$rounds,#11]
+ orr $s1,$s1,$t2,lsl#16
ldrb $t1,[$rounds,#10]
+ orr $s1,$s1,$t3,lsl#24
ldrb $t2,[$rounds,#9]
ldrb $t3,[$rounds,#8]
orr $s2,$s2,$t1,lsl#8
- orr $s2,$s2,$t2,lsl#16
- orr $s2,$s2,$t3,lsl#24
ldrb $s3,[$rounds,#15]
+ orr $s2,$s2,$t2,lsl#16
ldrb $t1,[$rounds,#14]
+ orr $s2,$s2,$t3,lsl#24
ldrb $t2,[$rounds,#13]
ldrb $t3,[$rounds,#12]
orr $s3,$s3,$t1,lsl#8
- orr $s3,$s3,$t2,lsl#16
- orr $s3,$s3,$t3,lsl#24
str $s0,[$key],#16
+ orr $s3,$s3,$t2,lsl#16
str $s1,[$key,#-12]
+ orr $s3,$s3,$t3,lsl#24
str $s2,[$key,#-8]
str $s3,[$key,#-4]
.L128_loop:
and $t2,lr,$s3,lsr#24
and $i1,lr,$s3,lsr#16
- and $i2,lr,$s3,lsr#8
- and $i3,lr,$s3
ldrb $t2,[$tbl,$t2]
+ and $i2,lr,$s3,lsr#8
ldrb $i1,[$tbl,$i1]
+ and $i3,lr,$s3
ldrb $i2,[$tbl,$i2]
- ldrb $i3,[$tbl,$i3]
- ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i1,lsl#24
+ ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
+ ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i3,lsl#8
eor $t2,$t2,$t1
eor $s0,$s0,$t2 @ rk[4]=rk[0]^...
eor $s1,$s1,$s0 @ rk[5]=rk[1]^rk[4]
- eor $s2,$s2,$s1 @ rk[6]=rk[2]^rk[5]
- eor $s3,$s3,$s2 @ rk[7]=rk[3]^rk[6]
str $s0,[$key],#16
+ eor $s2,$s2,$s1 @ rk[6]=rk[2]^rk[5]
str $s1,[$key,#-12]
+ eor $s3,$s3,$s2 @ rk[7]=rk[3]^rk[6]
str $s2,[$key,#-8]
- str $s3,[$key,#-4]
-
subs $rounds,$rounds,#1
+ str $s3,[$key,#-4]
bne .L128_loop
sub r2,$key,#176
b .Ldone
ldrb $t2,[$rounds,#17]
ldrb $t3,[$rounds,#16]
orr $i2,$i2,$t1,lsl#8
- orr $i2,$i2,$t2,lsl#16
- orr $i2,$i2,$t3,lsl#24
ldrb $i3,[$rounds,#23]
+ orr $i2,$i2,$t2,lsl#16
ldrb $t1,[$rounds,#22]
+ orr $i2,$i2,$t3,lsl#24
ldrb $t2,[$rounds,#21]
ldrb $t3,[$rounds,#20]
orr $i3,$i3,$t1,lsl#8
orr $i3,$i3,$t2,lsl#16
- orr $i3,$i3,$t3,lsl#24
str $i2,[$key],#8
+ orr $i3,$i3,$t3,lsl#24
str $i3,[$key,#-4]
teq lr,#192
.L192_loop:
and $t2,lr,$i3,lsr#24
and $i1,lr,$i3,lsr#16
- and $i2,lr,$i3,lsr#8
- and $i3,lr,$i3
ldrb $t2,[$tbl,$t2]
+ and $i2,lr,$i3,lsr#8
ldrb $i1,[$tbl,$i1]
+ and $i3,lr,$i3
ldrb $i2,[$tbl,$i2]
- ldrb $i3,[$tbl,$i3]
- ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i1,lsl#24
+ ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
+ ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i3,lsl#8
eor $i3,$t2,$t1
eor $s0,$s0,$i3 @ rk[6]=rk[0]^...
eor $s1,$s1,$s0 @ rk[7]=rk[1]^rk[6]
- eor $s2,$s2,$s1 @ rk[8]=rk[2]^rk[7]
- eor $s3,$s3,$s2 @ rk[9]=rk[3]^rk[8]
str $s0,[$key],#24
+ eor $s2,$s2,$s1 @ rk[8]=rk[2]^rk[7]
str $s1,[$key,#-20]
+ eor $s3,$s3,$s2 @ rk[9]=rk[3]^rk[8]
str $s2,[$key,#-16]
- str $s3,[$key,#-12]
-
subs $rounds,$rounds,#1
+ str $s3,[$key,#-12]
subeq r2,$key,#216
beq .Ldone
ldrb $t2,[$rounds,#25]
ldrb $t3,[$rounds,#24]
orr $i2,$i2,$t1,lsl#8
- orr $i2,$i2,$t2,lsl#16
- orr $i2,$i2,$t3,lsl#24
ldrb $i3,[$rounds,#31]
+ orr $i2,$i2,$t2,lsl#16
ldrb $t1,[$rounds,#30]
+ orr $i2,$i2,$t3,lsl#24
ldrb $t2,[$rounds,#29]
ldrb $t3,[$rounds,#28]
orr $i3,$i3,$t1,lsl#8
orr $i3,$i3,$t2,lsl#16
- orr $i3,$i3,$t3,lsl#24
str $i2,[$key],#8
+ orr $i3,$i3,$t3,lsl#24
str $i3,[$key,#-4]
mov $rounds,#14
.L256_loop:
and $t2,lr,$i3,lsr#24
and $i1,lr,$i3,lsr#16
- and $i2,lr,$i3,lsr#8
- and $i3,lr,$i3
ldrb $t2,[$tbl,$t2]
+ and $i2,lr,$i3,lsr#8
ldrb $i1,[$tbl,$i1]
+ and $i3,lr,$i3
ldrb $i2,[$tbl,$i2]
- ldrb $i3,[$tbl,$i3]
- ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i1,lsl#24
+ ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
+ ldr $t1,[$t3],#4 @ rcon[i++]
orr $t2,$t2,$i3,lsl#8
eor $i3,$t2,$t1
eor $s0,$s0,$i3 @ rk[8]=rk[0]^...
eor $s1,$s1,$s0 @ rk[9]=rk[1]^rk[8]
- eor $s2,$s2,$s1 @ rk[10]=rk[2]^rk[9]
- eor $s3,$s3,$s2 @ rk[11]=rk[3]^rk[10]
str $s0,[$key],#32
+ eor $s2,$s2,$s1 @ rk[10]=rk[2]^rk[9]
str $s1,[$key,#-28]
+ eor $s3,$s3,$s2 @ rk[11]=rk[3]^rk[10]
str $s2,[$key,#-24]
- str $s3,[$key,#-20]
-
subs $rounds,$rounds,#1
+ str $s3,[$key,#-20]
subeq r2,$key,#256
beq .Ldone
and $t2,lr,$s3
and $i1,lr,$s3,lsr#8
- and $i2,lr,$s3,lsr#16
- and $i3,lr,$s3,lsr#24
ldrb $t2,[$tbl,$t2]
+ and $i2,lr,$s3,lsr#16
ldrb $i1,[$tbl,$i1]
+ and $i3,lr,$s3,lsr#24
ldrb $i2,[$tbl,$i2]
- ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i1,lsl#8
+ ldrb $i3,[$tbl,$i3]
orr $t2,$t2,$i2,lsl#16
+ ldr $t1,[$key,#-48]
orr $t2,$t2,$i3,lsl#24
- ldr $t1,[$key,#-48]
ldr $i1,[$key,#-44]
ldr $i2,[$key,#-40]
- ldr $i3,[$key,#-36]
eor $t1,$t1,$t2 @ rk[12]=rk[4]^...
+ ldr $i3,[$key,#-36]
eor $i1,$i1,$t1 @ rk[13]=rk[5]^rk[12]
- eor $i2,$i2,$i1 @ rk[14]=rk[6]^rk[13]
- eor $i3,$i3,$i2 @ rk[15]=rk[7]^rk[14]
str $t1,[$key,#-16]
+ eor $i2,$i2,$i1 @ rk[14]=rk[6]^rk[13]
str $i1,[$key,#-12]
+ eor $i3,$i3,$i2 @ rk[15]=rk[7]^rk[14]
str $i2,[$key,#-8]
str $i3,[$key,#-4]
b .L256_loop
ldrb $t2,[$rounds,#1]
ldrb $t3,[$rounds,#0]
orr $s0,$s0,$t1,lsl#8
- orr $s0,$s0,$t2,lsl#16
- orr $s0,$s0,$t3,lsl#24
ldrb $s1,[$rounds,#7]
+ orr $s0,$s0,$t2,lsl#16
ldrb $t1,[$rounds,#6]
+ orr $s0,$s0,$t3,lsl#24
ldrb $t2,[$rounds,#5]
ldrb $t3,[$rounds,#4]
orr $s1,$s1,$t1,lsl#8
- orr $s1,$s1,$t2,lsl#16
- orr $s1,$s1,$t3,lsl#24
ldrb $s2,[$rounds,#11]
+ orr $s1,$s1,$t2,lsl#16
ldrb $t1,[$rounds,#10]
+ orr $s1,$s1,$t3,lsl#24
ldrb $t2,[$rounds,#9]
ldrb $t3,[$rounds,#8]
orr $s2,$s2,$t1,lsl#8
- orr $s2,$s2,$t2,lsl#16
- orr $s2,$s2,$t3,lsl#24
ldrb $s3,[$rounds,#15]
+ orr $s2,$s2,$t2,lsl#16
ldrb $t1,[$rounds,#14]
+ orr $s2,$s2,$t3,lsl#24
ldrb $t2,[$rounds,#13]
ldrb $t3,[$rounds,#12]
orr $s3,$s3,$t1,lsl#8
mov $t3,$s0,lsr#8
strb $t1,[$rounds,#0]
strb $t2,[$rounds,#1]
- strb $t3,[$rounds,#2]
- strb $s0,[$rounds,#3]
mov $t1,$s1,lsr#24
+ strb $t3,[$rounds,#2]
mov $t2,$s1,lsr#16
+ strb $s0,[$rounds,#3]
mov $t3,$s1,lsr#8
strb $t1,[$rounds,#4]
strb $t2,[$rounds,#5]
- strb $t3,[$rounds,#6]
- strb $s1,[$rounds,#7]
mov $t1,$s2,lsr#24
+ strb $t3,[$rounds,#6]
mov $t2,$s2,lsr#16
+ strb $s1,[$rounds,#7]
mov $t3,$s2,lsr#8
strb $t1,[$rounds,#8]
strb $t2,[$rounds,#9]
- strb $t3,[$rounds,#10]
- strb $s2,[$rounds,#11]
mov $t1,$s3,lsr#24
+ strb $t3,[$rounds,#10]
mov $t2,$s3,lsr#16
+ strb $s2,[$rounds,#11]
mov $t3,$s3,lsr#8
strb $t1,[$rounds,#12]
strb $t2,[$rounds,#13]
.align 2
_armv4_AES_decrypt:
str lr,[sp,#-4]! @ push lr
- ldr $t1,[$key],#16
- ldr $t2,[$key,#-12]
- ldr $t3,[$key,#-8]
- ldr $i1,[$key,#-4]
- ldr $rounds,[$key,#240-16]
+ ldmia $key!,{$t1-$i1}
eor $s0,$s0,$t1
+ ldr $rounds,[$key,#240-16]
eor $s1,$s1,$t2
eor $s2,$s2,$t3
eor $s3,$s3,$i1
sub $rounds,$rounds,#1
mov lr,#255
-.Ldec_loop:
and $i1,lr,$s0,lsr#16
and $i2,lr,$s0,lsr#8
and $i3,lr,$s0
mov $s0,$s0,lsr#24
+.Ldec_loop:
ldr $t1,[$tbl,$i1,lsl#2] @ Td1[s0>>16]
- ldr $s0,[$tbl,$s0,lsl#2] @ Td0[s0>>24]
- ldr $t2,[$tbl,$i2,lsl#2] @ Td2[s0>>8]
- ldr $t3,[$tbl,$i3,lsl#2] @ Td3[s0>>0]
-
and $i1,lr,$s1 @ i0
+ ldr $t2,[$tbl,$i2,lsl#2] @ Td2[s0>>8]
and $i2,lr,$s1,lsr#16
+ ldr $t3,[$tbl,$i3,lsl#2] @ Td3[s0>>0]
and $i3,lr,$s1,lsr#8
+ ldr $s0,[$tbl,$s0,lsl#2] @ Td0[s0>>24]
mov $s1,$s1,lsr#24
+
ldr $i1,[$tbl,$i1,lsl#2] @ Td3[s1>>0]
- ldr $s1,[$tbl,$s1,lsl#2] @ Td0[s1>>24]
ldr $i2,[$tbl,$i2,lsl#2] @ Td1[s1>>16]
ldr $i3,[$tbl,$i3,lsl#2] @ Td2[s1>>8]
eor $s0,$s0,$i1,ror#24
- eor $s1,$s1,$t1,ror#8
- eor $t2,$i2,$t2,ror#8
- eor $t3,$i3,$t3,ror#8
-
+ ldr $s1,[$tbl,$s1,lsl#2] @ Td0[s1>>24]
and $i1,lr,$s2,lsr#8 @ i0
+ eor $t2,$i2,$t2,ror#8
and $i2,lr,$s2 @ i1
+ eor $t3,$i3,$t3,ror#8
and $i3,lr,$s2,lsr#16
- mov $s2,$s2,lsr#24
+ eor $s1,$s1,$t1,ror#8
ldr $i1,[$tbl,$i1,lsl#2] @ Td2[s2>>8]
+ mov $s2,$s2,lsr#24
+
ldr $i2,[$tbl,$i2,lsl#2] @ Td3[s2>>0]
- ldr $s2,[$tbl,$s2,lsl#2] @ Td0[s2>>24]
ldr $i3,[$tbl,$i3,lsl#2] @ Td1[s2>>16]
eor $s0,$s0,$i1,ror#16
- eor $s1,$s1,$i2,ror#24
- eor $s2,$s2,$t2,ror#8
- eor $t3,$i3,$t3,ror#8
-
+ ldr $s2,[$tbl,$s2,lsl#2] @ Td0[s2>>24]
and $i1,lr,$s3,lsr#16 @ i0
+ eor $s1,$s1,$i2,ror#24
and $i2,lr,$s3,lsr#8 @ i1
+ eor $t3,$i3,$t3,ror#8
and $i3,lr,$s3 @ i2
- mov $s3,$s3,lsr#24
+ eor $s2,$s2,$t2,ror#8
ldr $i1,[$tbl,$i1,lsl#2] @ Td1[s3>>16]
+ mov $s3,$s3,lsr#24
+
ldr $i2,[$tbl,$i2,lsl#2] @ Td2[s3>>8]
ldr $i3,[$tbl,$i3,lsl#2] @ Td3[s3>>0]
- ldr $s3,[$tbl,$s3,lsl#2] @ Td0[s3>>24]
eor $s0,$s0,$i1,ror#8
+ ldr $s3,[$tbl,$s3,lsl#2] @ Td0[s3>>24]
eor $s1,$s1,$i2,ror#16
eor $s2,$s2,$i3,ror#24
+ ldr $i1,[$key],#16
eor $s3,$s3,$t3,ror#8
- ldr $t1,[$key],#16
- ldr $t2,[$key,#-12]
- ldr $t3,[$key,#-8]
- ldr $i1,[$key,#-4]
- eor $s0,$s0,$t1
- eor $s1,$s1,$t2
- eor $s2,$s2,$t3
- eor $s3,$s3,$i1
+ ldr $t1,[$key,#-12]
+ ldr $t2,[$key,#-8]
+ eor $s0,$s0,$i1
+ ldr $t3,[$key,#-4]
+ and $i1,lr,$s0,lsr#16
+ eor $s1,$s1,$t1
+ and $i2,lr,$s0,lsr#8
+ eor $s2,$s2,$t2
+ and $i3,lr,$s0
+ eor $s3,$s3,$t3
+ mov $s0,$s0,lsr#24
subs $rounds,$rounds,#1
bne .Ldec_loop
add $tbl,$tbl,#1024
- ldr $t1,[$tbl,#0] @ prefetch Td4
- ldr $t2,[$tbl,#32]
- ldr $t3,[$tbl,#64]
- ldr $i1,[$tbl,#96]
- ldr $i2,[$tbl,#128]
- ldr $i3,[$tbl,#160]
- ldr $t1,[$tbl,#192]
- ldr $t2,[$tbl,#224]
+ ldr $t2,[$tbl,#0] @ prefetch Td4
+ ldr $t3,[$tbl,#32]
+ ldr $t1,[$tbl,#64]
+ ldr $t2,[$tbl,#96]
+ ldr $t3,[$tbl,#128]
+ ldr $t1,[$tbl,#160]
+ ldr $t2,[$tbl,#192]
+ ldr $t3,[$tbl,#224]
- and $i1,lr,$s0,lsr#16
- and $i2,lr,$s0,lsr#8
- and $i3,lr,$s0
- ldrb $s0,[$tbl,$s0,lsr#24] @ Td4[s0>>24]
+ ldrb $s0,[$tbl,$s0] @ Td4[s0>>24]
ldrb $t1,[$tbl,$i1] @ Td4[s0>>16]
- ldrb $t2,[$tbl,$i2] @ Td4[s0>>8]
- ldrb $t3,[$tbl,$i3] @ Td4[s0>>0]
-
and $i1,lr,$s1 @ i0
+ ldrb $t2,[$tbl,$i2] @ Td4[s0>>8]
and $i2,lr,$s1,lsr#16
+ ldrb $t3,[$tbl,$i3] @ Td4[s0>>0]
and $i3,lr,$s1,lsr#8
+
ldrb $i1,[$tbl,$i1] @ Td4[s1>>0]
ldrb $s1,[$tbl,$s1,lsr#24] @ Td4[s1>>24]
ldrb $i2,[$tbl,$i2] @ Td4[s1>>16]
- ldrb $i3,[$tbl,$i3] @ Td4[s1>>8]
eor $s0,$i1,$s0,lsl#24
+ ldrb $i3,[$tbl,$i3] @ Td4[s1>>8]
eor $s1,$t1,$s1,lsl#8
- eor $t2,$t2,$i2,lsl#8
- eor $t3,$t3,$i3,lsl#8
-
and $i1,lr,$s2,lsr#8 @ i0
+ eor $t2,$t2,$i2,lsl#8
and $i2,lr,$s2 @ i1
- and $i3,lr,$s2,lsr#16
+ eor $t3,$t3,$i3,lsl#8
ldrb $i1,[$tbl,$i1] @ Td4[s2>>8]
+ and $i3,lr,$s2,lsr#16
+
ldrb $i2,[$tbl,$i2] @ Td4[s2>>0]
ldrb $s2,[$tbl,$s2,lsr#24] @ Td4[s2>>24]
- ldrb $i3,[$tbl,$i3] @ Td4[s2>>16]
eor $s0,$s0,$i1,lsl#8
+ ldrb $i3,[$tbl,$i3] @ Td4[s2>>16]
eor $s1,$i2,$s1,lsl#16
- eor $s2,$t2,$s2,lsl#16
- eor $t3,$t3,$i3,lsl#16
-
and $i1,lr,$s3,lsr#16 @ i0
+ eor $s2,$t2,$s2,lsl#16
and $i2,lr,$s3,lsr#8 @ i1
- and $i3,lr,$s3 @ i2
+ eor $t3,$t3,$i3,lsl#16
ldrb $i1,[$tbl,$i1] @ Td4[s3>>16]
+ and $i3,lr,$s3 @ i2
+
ldrb $i2,[$tbl,$i2] @ Td4[s3>>8]
ldrb $i3,[$tbl,$i3] @ Td4[s3>>0]
ldrb $s3,[$tbl,$s3,lsr#24] @ Td4[s3>>24]
eor $s0,$s0,$i1,lsl#16
+ ldr $i1,[$key,#0]
eor $s1,$s1,$i2,lsl#8
+ ldr $t1,[$key,#4]
eor $s2,$i3,$s2,lsl#8
+ ldr $t2,[$key,#8]
eor $s3,$t3,$s3,lsl#24
+ ldr $t3,[$key,#12]
- ldr lr,[sp],#4 @ pop lr
- ldr $t1,[$key,#0]
- ldr $t2,[$key,#4]
- ldr $t3,[$key,#8]
- ldr $i1,[$key,#12]
- eor $s0,$s0,$t1
- eor $s1,$s1,$t2
- eor $s2,$s2,$t3
- eor $s3,$s3,$i1
+ eor $s0,$s0,$i1
+ eor $s1,$s1,$t1
+ eor $s2,$s2,$t2
+ eor $s3,$s3,$t3
sub $tbl,$tbl,#1024
- mov pc,lr @ return
+ ldr pc,[sp],#4 @ pop and return
.size _armv4_AES_decrypt,.-_armv4_AES_decrypt
.asciz "AES for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
.align 2
projects / openssl.git / blobdiff