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| author | Niels Möller <nisse@lysator.liu.se> | 2002-05-16 01:23:58 +0200 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2002-05-16 01:23:58 +0200 |
| commit | b076a849beeffa1fcb5fd6183f44d26c910fc8ec (patch) | |
| tree | 7d7849988e92efc8e417c956268c822482e5a81e /sparc | |
| parent | 59086f677ef53405db932139c793159ea9775244 (diff) | |
| download | nettle-b076a849beeffa1fcb5fd6183f44d26c910fc8ec.tar.gz | |
(_aes_crypt): Unrolled source loop.
Rev: src/nettle/sparc/aes.asm:1.111
Diffstat (limited to 'sparc')
| -rw-r--r-- | sparc/aes.asm | 98 |
1 files changed, 95 insertions, 3 deletions
diff --git a/sparc/aes.asm b/sparc/aes.asm index 318b5ce0..e7d00774 100644 --- a/sparc/aes.asm +++ b/sparc/aes.asm @@ -63,6 +63,24 @@ define(t1, %o1) define(t2, %o2) define(t3, %o3) +C AES_LOAD(i) +C Get one word of input, XOR with first subkey, store in wtxt +define(<AES_LOAD>, < + ldub [src + $1], t0 + ldub [src + $1 + 1], t1 + sll t1, 8, t1 + or t0, t1, t0 + ldub [src + $1 + 2], t2 + sll t2, 16, t2 + or t0, t2, t0 + ldub [src + $1 + 3], t1 + sll t1, 24, t1 + or t0, t1, t0 + ld [key + $1], t2 + xor t0, t2, t0 + st t0, [wtxt + $1] + >)dnl + C AES_ROUND(i) C Compute one word in the round function. C Input in wtxt, output stored in tmp + i. @@ -186,8 +204,80 @@ _aes_crypt: ! For stop condition. Note that src is incremented in the ! delay slot add src, 8, %g1 + + C AES_LOAD(0) ! i = 0 + C AES_LOAD(4) ! i = 1 + C AES_LOAD(8) ! i = 2 + C AES_LOAD(12) ! i = 3 + C add src, 16, src + +C .Lsource_loop: + C Begin loop + C i = 0 + ldub [src+3], t3 + ldub [src+2], t2 + sll t3, 24, t3 + ldub [src+1], t1 + + sll t2, 16, t2 + or t3, t2, t3 + ldub [src], t0 + sll t1, 8, t1 + + ! Get subkey + ld [src+%g2], t2 + or t3, t1, t3 + or t3, t0, t3 + xor t3, t2, t3 + + C cmp src, %g1 + st t3, [src+%g3] + C bleu .Lsource_loop + add src, 4, src + + C i = 1 + ldub [src+3], t3 + ldub [src+2], t2 + sll t3, 24, t3 + ldub [src+1], t1 + + sll t2, 16, t2 + or t3, t2, t3 + ldub [src], t0 + sll t1, 8, t1 + + ! Get subkey + ld [src+%g2], t2 + or t3, t1, t3 + or t3, t0, t3 + xor t3, t2, t3 + + C cmp src, %g1 + st t3, [src+%g3] + C bleu .Lsource_loop + add src, 4, src + C i = 2 + ldub [src+3], t3 + ldub [src+2], t2 + sll t3, 24, t3 + ldub [src+1], t1 + + sll t2, 16, t2 + or t3, t2, t3 + ldub [src], t0 + sll t1, 8, t1 -.Lsource_loop: + ! Get subkey + ld [src+%g2], t2 + or t3, t1, t3 + or t3, t0, t3 + xor t3, t2, t3 + + C cmp src, %g1 + st t3, [src+%g3] + C bleu .Lsource_loop + add src, 4, src + C i = 3 ldub [src+3], t3 ldub [src+2], t2 sll t3, 24, t3 @@ -204,10 +294,12 @@ _aes_crypt: or t3, t0, t3 xor t3, t2, t3 - cmp src, %g1 + C cmp src, %g1 st t3, [src+%g3] - bleu .Lsource_loop + C bleu .Lsource_loop add src, 4, src + + C End loop sub nrounds, 1, round add ctx, 16, key |