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...
in cryptlib.h (which is often included as "../cryptlib.h"), then the
question remains relative to which directory this is to be interpreted.
gcc went one further directory up, as intended; but makedepend thinks
differently, and so probably do some C compilers. So the ../ must go away;
thus e_os.h goes back into include/openssl (but I now use
#include "openssl/e_os.h" instead of <openssl/e_os.h> to make the point) --
and we have another huge bunch of dependency changes. Argh.
There were problems with putting e_os.h just into the top directory,
because the test programs are compiled within test/ in the "standard"
case in in their original directories in the makefile.one case;
and in the latter symlinks may not be available.
used with negative char values, so I've added casts to unsigned char.
Maybe what really should be done is change all those arrays and
pointers to type unsigned char [] or unsigned char *, respectively;
but using plain char with those predicates is just wrong, so something
had to be done.
Submitted by:
Reviewed by:
PR:
to error code script: it can now find untranslatable function codes (usually
because the function is static and not defined in a header: occasionally because
of a typo...) and unreferenced function and reason codes. To see this try:
perl util/mkerr.pl -recurse -debug
Also fixed some typos in crypto/pkcs12 that this found :-)
Also tidy up some error calls that had to be all on one line: the old error
script couldn't find codes unless the call was all on one line.
script, translates function codes better and doesn't need the K&R function
prototypes to work (NB. the K&R prototypes can't be wiped just yet: they are
still needed by the DEF generator...). I also ran the script with the -rewrite
option to update all the header and source files.
when they cause the destination to expand.
To see how evil this is try this:
#include <pem.h>
main()
{
BIGNUM *bn = NULL;
int i;
bn = BN_new();
BN_hex2bn(&bn, "FFFFFFFF");
BN_add_word(bn, 1);
printf("Value %s\n", BN_bn2hex(bn));
}
This would typically fail before the patch.
It also screws up if you comment out the BN_hex2bn line above or in any
situation where BN_add_word() causes the number of BN_ULONGs in the result
to change (try doubling the number of FFs).
consistent in the source tree and replaced `/bin/rm' by `rm'. Additonally
cleaned up the `make links' target: Remove unnecessary semicolons, subsequent
redundant removes, inline point.sh into mklink.sh to speed processing and no
longer clutter the display with confusing stuff. Instead only the actually
done links are displayed.
1. merge various obsolete readme texts into doc/ssleay.txt
where we collect the old documents and readme texts.
2. remove the first part of files where I'm already sure that we no longer need
them because of three reasons: either they are just temporary files which
were left by Eric or they are preserved original files where I've verified
that the diff is also available in the CVS via "cvs diff -rSSLeay_0_8_1b"
or they were renamed (as it was definitely the case for the crypto/md/
stuff).
We've still a horrible mess under crypto/bn/asm/. There for a lot of files
I'm sure whether we need them or not. So, when someone knows it better, feel
free to cleanup there.
1. Add *lots* of missing prototypes for static ssl functions.
2. VC++ doesn't understand the 'LL' suffix for 64 bits constants: change bn.org
3. Add a few missing prototypes in pem.org
Fix mk1mf.pl so it outputs a Makefile that doesn't choke Win95.
Fix mkdef.pl so it doesn't truncate longer names.
but the BN code had some problems that would cause failures when
doing certificate verification and some other functions.
Submitted by: Eric A Young from a C2Net version of SSLeay
Reviewed by: Mark J Cox
PR:
1. The already released version was 0.9.1c and not 0.9.1b
2. The next release should be 0.9.2 and not 0.9.1d, because
first the changes are already too large, second we should avoid any more
0.9.1x confusions and third, the Apache version semantics of
VERSION.REVISION.PATCHLEVEL for the version string is reasonable (and here
.2 is already just a patchlevel and not major change).
tVS: ----------------------------------------------------------------------
