(_aes_crypt): Deleted idx register. Further cleanup.

Rev: src/nettle/sparc/aes.asm:1.65

sparc/aes.asm

@@ -106,7 +106,6 @@ _aes_crypt:
 .Lround_loop:
 	! 4*i
 	mov	0, i
-	! add	T, AES_SIDX3, idx
 .Linner_loop:
 	! The comments mark which j in T->table[j][ Bj(wtxt[IDXi(i)]) ]
 	! the instruction is a part of. 
@@ -114,68 +113,60 @@ _aes_crypt:
 	! The code uses the register %o[j], aka tj, as the primary 
 	! register for that sub-expression. True for j==1,3.
 	
-	! AES_SIDX1
 	ld	[IDX1+i], t1		! 1
-	! AES_SIDX2
+	
 	! IDX2(j) = j XOR 2
 	xor	i, 8, t2
-	! wtxt[IDX1...]
 	add	wtxt, t1, t1		! 1
 	ldub	[t1+2], t1		! 1
-
-	! AES_SIDX3
 	ld	[IDX3+i], t3		! 3
+	
 	sll	t1, 2, t1		! 1
-	! wtxt[i]
 	ld	[wtxt+i], t0		! 0
-	! wtxt[IDX2...]
 	lduh	[wtxt+t2], t2		! 2
-	
 	and	t0, 255, t0		! 0
-	! wtxt[IDX3...]
+	
 	ldub	[wtxt+t3], t3		! 3
 	sll	t0, 2, t0		! 0
 	ld	[T0+t0], t0		! 0
-
 	and	t2, 255, t2		! 2
+	
 	ld	[T1+t1], t1		! 1
 	sll	t2, 2, t2		! 2
 	ld	[T2+t2], t2		! 2
-
 	sll	t3, 2, t3		! 3
+	
 	ld	[T3+t3], t3		! 3
 	xor	t0, t1, t0		! 0, 1
 	xor	t0, t2, t0		! 0, 1, 2
-
-	! add	idx, 4, idx		
 	! Fetch roundkey
 	ld	[key+i], t1
+	
 	xor	t0, t3, t0		! 0, 1, 2, 3
 	xor	t0, t1, t0
-
 	st	t0, [tmp+i]
 	cmp	i, 8
+	
 	bleu	.Linner_loop
 	add	i, 4, i
-	
 	! switch roles for tmp and wtxt
 	xor	wtxt, diff, wtxt
 	subcc	round, 1, round
+	
 	add	key, 16, key
 	nop
-	
 	bne	.Lround_loop
 	xor	tmp, diff, tmp
 
 	! final round
 	! 4*i
 	mov	0, i
-	! SIDX3
-	! add	T, AES_SIDX3, idx
+
 .Lfinal_loop:
 	! Comments mark which j in T->sbox[Bj(wtxt[IDXj(i)])]
 	! the instruction is part of
 	ld	[IDX1+i], t1 	! 1
+	! IDX2(j) = j XOR 2
 	xor	i, 8, t2
 	! ld	[idx-16], t2	! 2
 	add	wtxt, t1, t1	! 1