(_aes_crypt): Use double-buffering, and no

separate loop for adding the round key.

Rev: src/nettle/sparc/aes.asm:1.38

diff --git a/sparc/aes.asm b/sparc/aes.asm
index b8f8aeaca4760ea83dd70c21fb59f3fec3c3c2a9..c6282cf067d1b000eacc03e30e3de98387970a40 100644 (file)
--- a/sparc/aes.asm
+++ b/sparc/aes.asm
@@ -158,14 +158,14 @@ _aes_crypt:
 
        add     idx, 4, idx             
 
-!      ! Fetch roundkey
-!      sll     round, 4, %o5
-!      add     %o5, ctx, %o5
-!      ld      [%o5], %o5
+       ! Fetch roundkey
+       sll     round, 4, t1
+       add     t1, ctx, t1
+       ld      [t1+i], t1
                
        xor     t0, t3, t0              ! 0, 1, 2, 3
 
-!      xor     t0, %o5, t0
+       xor     t0, t1, t0
        st      t0, [tmp+i]
 
        cmp     i, 8
@@ -173,25 +173,25 @@ _aes_crypt:
        bleu    .Linner_loop
        add     i, 4, i
        
-       sll     round, 4, %g2
-       add     %g2, ctx, %o0
-       mov     0, i
-
-.Lroundkey_loop:
-       sll     i, 2, %g2
-       ld      [%o0], %o5
-       add     i, 1, i
-       ld      [tmp+%g2], %g3
-       cmp     i, 3
-       xor     %g3, %o5, %g3
-       st      %g3, [wtxt+%g2]
-       ! st    %g3, [tmp+%g2]
-       bleu    .Lroundkey_loop
-       add     %o0, 4, %o0
-
+!      sll     round, 4, %g2
+!      add     %g2, ctx, %o0
+!      mov     0, i
+! 
+! .Lroundkey_loop:
+!      sll     i, 2, %g2
+!      ld      [%o0], %o5
+!      add     i, 1, i
+!      ld      [tmp+%g2], %g3
+!      cmp     i, 3
+!      xor     %g3, %o5, %g3
+!      ! st    %g3, [wtxt+%g2]
+!      st      %g3, [tmp+%g2]
+!      bleu    .Lroundkey_loop
+!      add     %o0, 4, %o0
+! 
        ! switch roles for tmp and wtxt
-       ! xor   wtxt, diff, wtxt
-       ! xor   tmp, diff, tmp
+       xor     wtxt, diff, wtxt
+       xor     tmp, diff, tmp
 
        add     round, 1, round
        cmp     round, nround