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09f4bd2a BM |
1 | <OBSOLETE> |
2 | ||
d02b48c6 | 3 | All assember in this directory are just version of the file |
775c63fc | 4 | crypto/bn/bn_asm.c. |
d02b48c6 RE |
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 | ||
d0c2ebf4 RL |
20 | There are 3 versions of assember for the HP PA-RISC. |
21 | ||
478b50cf | 22 | pa-risc.s is the original one which works fine and generated using gcc :-) |
d0c2ebf4 RL |
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). | |
09f4bd2a BM |
26 | |
27 | </OBSOLETE> |