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Dmitry Baryshkov
nettle
Commits
45a424ea
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45a424ea
authored
23 years ago
by
Niels Möller
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Rev: src/nettle/ChangeLog:1.100
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45a424ea
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].
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