Commit Graph

23 Commits

Author SHA1 Message Date
Bodo Möller
78a0c1f18d modular arithmetics
"make update"
2000-11-26 16:42:38 +00:00
Bodo Möller
7f7b8d6871 BN_CTX-related fixes. 2000-11-08 10:05:34 +00:00
Dr. Stephen Henson
2d978cbd30 Changes needed for Tandem NSK, supplied by Scott Uroff (scott@xypro.com).
Fix warnings with BIO_dump_indent().
2000-08-04 00:01:39 +00:00
Andy Polyakov
89cee61b45 New NO_INLINE_ASM macro. Primary target for the moment is Solaris x86
which can't stand GNU C assembler templates.
2000-02-15 17:20:52 +00:00
Ulf Möller
4a6222d71b BN_div bugfix. The q-- loop should not be entered in the n0==d0 case. 2000-02-06 00:25:39 +00:00
Ulf Möller
9b141126d4 New functions BN_CTX_start(), BN_CTX_get(), BN_CTX_end() to access
temporary BIGNUMs. BN_CTX still uses a fixed number of BIGNUMs, but
the BN_CTX implementation could now easily be changed.
2000-02-05 14:17:32 +00:00
Andy Polyakov
fb81ac5e6b Support for "multiply high" instruction, see BN_UMULT_HIGH comment in
crypto/bn/bn_lcl.h for further details. It should be noted that for
the moment of this writing the code was tested only on Alpha. If
compiled with DEC C the C implementation exhibits 12% performance
improvement over the crypto/bn/asm/alpha.s (on EV56 box running
AlphaLinux). GNU C is (unfortunately) 8% behind the assembler
implementation. But it's OpenVMS Alpha users who *may* benefit most
as 'apps/openssl speed rsa' exhibits 6 (six) times performance
improvement over the original VMS bignum implementation. Where "*may*"
means "as soon as code is enabled though #define SIXTY_FOUR_BIT and
crypto/bn/asm/vms.mar is skipped."
2000-02-02 16:18:12 +00:00
Ulf Möller
0bde1089f8 match the prototype 2000-02-01 23:47:24 +00:00
Bodo Möller
cb5b7850ac If n0 == d0, we must alway compute 'rem' "by hand" 2000-02-01 11:10:54 +00:00
Bodo Möller
fe7cd1647d Typo in preprocessor symbol. 2000-02-01 08:48:30 +00:00
Ulf Möller
3b14cb717d Solaris x86 assembler problem is already addressed in ./config
(bug reports keep coming in because that was still missing in 0.9.4)
1999-12-14 15:28:10 +00:00
Ulf Möller
a4af39ac44 Don't use inline assembler on x86 Solaris (would need a different syntax). 1999-12-08 22:55:06 +00:00
Ulf Möller
8e1589ece5 VC++ warning. 1999-09-29 22:11:06 +00:00
Andy Polyakov
0bbd03525e Minor MIPS III/IV tune-up. 1999-08-24 16:02:16 +00:00
Ben Laurie
97e84e38df Make it compile under -pedantic. 1999-08-03 10:18:27 +00:00
Andy Polyakov
4c22909e31 Extra i386+gcc bn_div.c tune-up featuring inline division and saving
the remainder left in %edx. Here is the resulting performance improvement
matrix (improvement as a result of this *and* previous tune-up committed
two days ago). The results were obtained by profiling the "div" part of
the crypto/bn/bnspeed.c.

CPU	BN_div	bn_div_words	overall	comment
------------------------------------------------------------------------
PII	+16%	accumulated by	+2-3%	PII multiplies damn fast! Taking
		inlining		multiplication out of the loop
					didn't make too much difference.
					Eliminating of the multiplication
					involved in remainder calculation
					is the major factor.

Pentium	+45%	accumulated by	+7-9%	mull isn't that fast and replacing
		inlining		multiplications with additions in
					the loop has more visible effect:-)

MIPS	+75%	+12%		+20-25%	In addition to the taking mults
R10000					out of the loop (giving 12% in the
					asm/mips3.s) three mults were
					eliminated in BN_div.

Alpha	+30%	+50%		+10-15%	Same as above. But remember that
EV4					bn_div_words is a C implementation.
					It takes 4 Alpha mults in C to do
					the same thing as 1 MIPS mult in
					assembler does. So the effect (50%)
					is more impressive. But not the
					overall one... Well, if Alpha
					bn_mul_add would be implemented
					in assembler overall improvement
					would be closer to MIPS...
1999-07-31 23:27:41 +00:00
Andy Polyakov
0dd25e3606 Bignum division tune-up. Idea is to move multiplications in front of
loop body and replace 'em with addition/subtraction.
1999-07-30 11:43:43 +00:00
Ulf Möller
adc7fe123b Circumvent bug in SC5 without patch #107357-01.
Submitted by: Andy Polyakov <appro@fy.chalmers.se>
1999-06-09 21:13:27 +00:00
Ben Laurie
84c15db551 Some constification and stacks that slipped through the cracks (how?). 1999-06-04 22:23:10 +00:00
Ulf Möller
6b691a5c85 Change functions to ANSI C. 1999-04-19 21:31:43 +00:00
Ralf S. Engelschall
dfeab0689f Import of old SSLeay release: SSLeay 0.9.1b (unreleased) 1998-12-21 11:00:56 +00:00
Ralf S. Engelschall
58964a4922 Import of old SSLeay release: SSLeay 0.9.0b 1998-12-21 10:56:39 +00:00
Ralf S. Engelschall
d02b48c63a Import of old SSLeay release: SSLeay 0.8.1b 1998-12-21 10:52:47 +00:00