README
1 <OBSOLETE>
2
3 All assember in this directory are just version of the file
4 crypto/bn/bn_asm.c.
5
6 Quite a few of these files are just the assember output from gcc since on
7 quite a few machines they are 2 times faster than the system compiler.
8
9 For the x86, I have hand written assember because of the bad job all
10 compilers seem to do on it. This normally gives a 2 time speed up in the RSA
11 routines.
12
13 For the DEC alpha, I also hand wrote the assember (except the division which
14 is just the output from the C compiler pasted on the end of the file).
15 On the 2 alpha C compilers I had access to, it was not possible to do
16 64b x 64b -> 128b calculations (both long and the long long data types
17 were 64 bits). So the hand assember gives access to the 128 bit result and
18 a 2 times speedup :-).
19
20 There are 3 versions of assember for the HP PA-RISC.
21
22 pa-risc.s is the origional one which works fine and generated using gcc :-)
23
24 pa-risc2W.s and pa-risc2.s are 64 and 32-bit PA-RISC 2.0 implementations
25 by Chris Ruemmler from HP (with some help from the HP C compiler).
26
27 </OBSOLETE>
28