#!/usr/bin/env perl
# ====================================================================
-# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
+# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
# project. The module is, however, dual licensed under OpenSSL and
# CRYPTOGAMS licenses depending on where you obtain it. For further
# details see http://www.openssl.org/~appro/cryptogams/.
$rounds="r12";
$code=<<___;
-#include "arm_arch.h"
+#ifndef __KERNEL__
+# include "arm_arch.h"
+#else
+# define __ARM_ARCH__ __LINUX_ARM_ARCH__
+#endif
+
.text
+#if __ARM_ARCH__<7
+.code 32
+#else
+.syntax unified
+# ifdef __thumb2__
+.thumb
+# else
.code 32
+# endif
+#endif
.type AES_Te,%object
.align 5
.type AES_encrypt,%function
.align 5
AES_encrypt:
+#if __ARM_ARCH__<7
sub r3,pc,#8 @ AES_encrypt
+#else
+ adr r3,AES_encrypt
+#endif
stmdb sp!,{r1,r4-r12,lr}
mov $rounds,r0 @ inp
mov $key,r2
.align 5
AES_set_encrypt_key:
_armv4_AES_set_encrypt_key:
+#if __ARM_ARCH__<7
sub r3,pc,#8 @ AES_set_encrypt_key
+#else
+ adr r3,AES_set_encrypt_key
+#endif
teq r0,#0
+#if __ARM_ARCH__>=7
+ itt eq @ Thumb2 thing, sanity check in ARM
+#endif
moveq r0,#-1
beq .Labrt
teq r2,#0
+#if __ARM_ARCH__>=7
+ itt eq @ Thumb2 thing, sanity check in ARM
+#endif
moveq r0,#-1
beq .Labrt
teq r1,#192
beq .Lok
teq r1,#256
+#if __ARM_ARCH__>=7
+ itt ne @ Thumb2 thing, sanity check in ARM
+#endif
movne r0,#-1
bne .Labrt
str $s2,[$key,#-16]
subs $rounds,$rounds,#1
str $s3,[$key,#-12]
+#if __ARM_ARCH__>=7
+ itt eq @ Thumb2 thing, sanity check in ARM
+#endif
subeq r2,$key,#216
beq .Ldone
str $s2,[$key,#-24]
subs $rounds,$rounds,#1
str $s3,[$key,#-20]
+#if __ARM_ARCH__>=7
+ itt eq @ Thumb2 thing, sanity check in ARM
+#endif
subeq r2,$key,#256
beq .Ldone
str $i3,[$key,#-4]
b .L256_loop
+.align 2
.Ldone: mov r0,#0
ldmia sp!,{r4-r12,lr}
-.Labrt: tst lr,#1
+.Labrt:
+#if __ARM_ARCH__>=5
+ ret @ bx lr
+#else
+ tst lr,#1
moveq pc,lr @ be binary compatible with V4, yet
bx lr @ interoperable with Thumb ISA:-)
+#endif
.size AES_set_encrypt_key,.-AES_set_encrypt_key
.global AES_set_decrypt_key
str lr,[sp,#-4]! @ push lr
bl _armv4_AES_set_encrypt_key
teq r0,#0
- ldrne lr,[sp],#4 @ pop lr
+ ldr lr,[sp],#4 @ pop lr
bne .Labrt
- stmdb sp!,{r4-r12}
+ mov r0,r2 @ AES_set_encrypt_key preserves r2,
+ mov r1,r2 @ which is AES_KEY *key
+ b _armv4_AES_set_enc2dec_key
+.size AES_set_decrypt_key,.-AES_set_decrypt_key
- ldr $rounds,[r2,#240] @ AES_set_encrypt_key preserves r2,
- mov $key,r2 @ which is AES_KEY *key
- mov $i1,r2
- add $i2,r2,$rounds,lsl#4
+@ void AES_set_enc2dec_key(const AES_KEY *inp,AES_KEY *out)
+.global AES_set_enc2dec_key
+.type AES_set_enc2dec_key,%function
+.align 5
+AES_set_enc2dec_key:
+_armv4_AES_set_enc2dec_key:
+ stmdb sp!,{r4-r12,lr}
+
+ ldr $rounds,[r0,#240]
+ mov $i1,r0 @ input
+ add $i2,r0,$rounds,lsl#4
+ mov $key,r1 @ ouput
+ add $tbl,r1,$rounds,lsl#4
+ str $rounds,[r1,#240]
+
+.Linv: ldr $s0,[$i1],#16
+ ldr $s1,[$i1,#-12]
+ ldr $s2,[$i1,#-8]
+ ldr $s3,[$i1,#-4]
+ ldr $t1,[$i2],#-16
+ ldr $t2,[$i2,#16+4]
+ ldr $t3,[$i2,#16+8]
+ ldr $i3,[$i2,#16+12]
+ str $s0,[$tbl],#-16
+ str $s1,[$tbl,#16+4]
+ str $s2,[$tbl,#16+8]
+ str $s3,[$tbl,#16+12]
+ str $t1,[$key],#16
+ str $t2,[$key,#-12]
+ str $t3,[$key,#-8]
+ str $i3,[$key,#-4]
+ teq $i1,$i2
+ bne .Linv
-.Linv: ldr $s0,[$i1]
+ ldr $s0,[$i1]
ldr $s1,[$i1,#4]
ldr $s2,[$i1,#8]
ldr $s3,[$i1,#12]
- ldr $t1,[$i2]
- ldr $t2,[$i2,#4]
- ldr $t3,[$i2,#8]
- ldr $i3,[$i2,#12]
- str $s0,[$i2],#-16
- str $s1,[$i2,#16+4]
- str $s2,[$i2,#16+8]
- str $s3,[$i2,#16+12]
- str $t1,[$i1],#16
- str $t2,[$i1,#-12]
- str $t3,[$i1,#-8]
- str $i3,[$i1,#-4]
- teq $i1,$i2
- bne .Linv
+ str $s0,[$key]
+ str $s1,[$key,#4]
+ str $s2,[$key,#8]
+ str $s3,[$key,#12]
+ sub $key,$key,$rounds,lsl#3
___
$mask80=$i1;
$mask1b=$i2;
moveq pc,lr @ be binary compatible with V4, yet
bx lr @ interoperable with Thumb ISA:-)
#endif
-.size AES_set_decrypt_key,.-AES_set_decrypt_key
+.size AES_set_enc2dec_key,.-AES_set_enc2dec_key
.type AES_Td,%object
.align 5
.type AES_decrypt,%function
.align 5
AES_decrypt:
+#if __ARM_ARCH__<7
sub r3,pc,#8 @ AES_decrypt
+#else
+ adr r3,AES_decrypt
+#endif
stmdb sp!,{r1,r4-r12,lr}
mov $rounds,r0 @ inp
mov $key,r2
ldrb $t3,[$tbl,$i3] @ Td4[s0>>0]
and $i3,lr,$s1,lsr#8
+ add $s1,$tbl,$s1,lsr#24
ldrb $i1,[$tbl,$i1] @ Td4[s1>>0]
- ldrb $s1,[$tbl,$s1,lsr#24] @ Td4[s1>>24]
+ ldrb $s1,[$s1] @ Td4[s1>>24]
ldrb $i2,[$tbl,$i2] @ Td4[s1>>16]
eor $s0,$i1,$s0,lsl#24
ldrb $i3,[$tbl,$i3] @ Td4[s1>>8]
ldrb $i2,[$tbl,$i2] @ Td4[s2>>0]
and $i3,lr,$s2,lsr#16
- ldrb $s2,[$tbl,$s2,lsr#24] @ Td4[s2>>24]
+ add $s2,$tbl,$s2,lsr#24
+ ldrb $s2,[$s2] @ Td4[s2>>24]
eor $s0,$s0,$i1,lsl#8
ldrb $i3,[$tbl,$i3] @ Td4[s2>>16]
eor $s1,$i2,$s1,lsl#16
ldrb $i2,[$tbl,$i2] @ Td4[s3>>8]
and $i3,lr,$s3 @ i2
+ add $s3,$tbl,$s3,lsr#24
ldrb $i3,[$tbl,$i3] @ Td4[s3>>0]
- ldrb $s3,[$tbl,$s3,lsr#24] @ Td4[s3>>24]
+ ldrb $s3,[$s3] @ Td4[s3>>24]
eor $s0,$s0,$i1,lsl#16
ldr $i1,[$key,#0]
eor $s1,$s1,$i2,lsl#8
___
$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4
+$code =~ s/\bret\b/bx\tlr/gm;
+
+open SELF,$0;
+while(<SELF>) {
+ next if (/^#!/);
+ last if (!s/^#/@/ and !/^$/);
+ print;
+}
+close SELF;
+
print $code;
close STDOUT; # enforce flush
projects / openssl.git / blobdiff