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Rev: src/nettle/ChangeLog:1.100

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@@ -1,5 +1,59 @@
+2002-05-16  Niels Möller  <nisse@cuckoo.hack.org>
+
+       * sparc/aes.asm: Deleted registers i and t3.
+       (_aes_crypt): Moved some registers around. We now use input
+       registers only for arguments, local registers for loop invariants,
+       output registers for temporaries and loop variables, and no global
+       registers at all.
+
+       * sparc/aes.asm (AES_FINAL_ROUND): New macro.
+       (_aes_crypt): Use AES_FINAL_ROUND for the first word if the final
+       round. 
+       (_aes_crypt): And for the rest of the final round.
+       (AES_FINAL_ROUND): Don't update dst, just access it offseted by i.
+       (_aes_crypt): Add 16 to dst at the end of the final round.
+       (AES_ROUND): Use ldub, not ld + and, to get the third byte
+       of wtxt.
+       (AES_ROUND): Use ldub, not lduh + and, to get the second
+       byte of a word.
+       (AES_ROUND): Reordered instructions, so that we can save one
+       register. 
+       (AES_ROUND): Eliminated use of t3.
+       (AES_FINAL_ROUND): Eliminated ands.
+       (AES_FINAL_ROUND): Reordered, so that we can save one register. 
+       (AES_FINAL_ROUND): Eliminated t3.
+       (AES_LOAD): New macro.
+       (_aes_crypt): Unrolled source loop.
+       (_aes_crypt): Use AES_LOAD macro.
+       (_aes_crypt): Deleted cruft from the old source loop.
+       (AES_LOAD): Eliminated t3.
+
 2002-05-15  Niels Möller  <nisse@cuckoo.hack.org>
 
+       * sparc/aes.asm (AES_ROUND): New macro.
+       (_aes_crypt): Use AES_ROUND for first word of the
+       round function.
+       (_aes_crypt): And for the rest of the round function.
+       
+       * sparc/aes.asm (_aes_crypt): Deleted a bunch of additions,
+       after accessing IDX1.
+
+       * aes-internal.h (struct aes_table): sparc_idx[0] should now
+       contain index values shifted by the size of a word, and with 2
+       added. This saves some additions in the sparc assembler code.
+       Updates aes-encrypt-table.c and aes-decrypt-table.c.
+
+       * sparc/aes.asm (_aes_crypt): Unrolled final loop, preparing for
+       optimizations. 
+       (_aes_crypt): Eliminated i from forst copy of the loop. Some
+       cleanup. 
+       (_aes_crypt): And from second copy.
+       (_aes_crypt): And from third.
+       (_aes_crypt): And fourth.
+       (_aes_crypt): Eliminated updates of i from the loop.
+       (_aes_crypt): Access IDX1 and IDX3 through the T pointer, saving
+       two registers.
+
        * aes-internal.h (struct aes_table): Renamed the shift_idx field
        to sparc_idx, as it will be tweaked to improve the sparc code.
        Also reduced its size to [2][4].