OpenCores
URL https://opencores.org/ocsvn/eco32/eco32/trunk

Subversion Repositories eco32

[/] [eco32/] [trunk/] [fp/] [implementation/] [mmix/] [crypto1.mms] - Blame information for rev 139

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 15 hellwig
* Cryptanalysis Problem (CLASSIFIED) (pipelined)
2
a GREG
3
b GREG
4
bb GREG
5
c GREG
6
t GREG
7
x GREG
8
y GREG
9
       LOC Data_Segment
10
freq   GREG @           Base address for byte counts
11
       LOC @+8*(1<<8)   Space for the byte frequencies
12
p      GREG @
13
       BYTE "abracadabraa",0,"abc" Trivial test data
14
ones   GREG #0101010101010101
15
       LOC  #100
16
Start  LDOU a,p,0
17
       INCL p,8
18
       BDIF t,ones,a
19
       BNZ  t,3F        Do main loop, unless near the end.
20
2H     SRU  b,a,53
21
       LDO  c,freq,b   Load old count.
22
       SLU  bb,a,8
23
       INCL c,1
24
       SRU  bb,bb,53
25
       STO  c,freq,b   Store new count.
26
       LDO  c,freq,bb
27
       SLU  b,a,16
28
       INCL c,1
29
       SRU  b,b,53
30
       STO  c,freq,bb
31
       LDO  c,freq,b   Load old count.
32
       SLU  bb,a,24
33
       INCL c,1
34
       SRU  bb,bb,53
35
       STO  c,freq,b   Store new count.
36
       LDO  c,freq,bb
37
       SLU  b,a,32
38
       INCL c,1
39
       SRU  b,b,53
40
       STO  c,freq,bb
41
       LDO  c,freq,b   Load old count.
42
       SLU  bb,a,40
43
       INCL c,1
44
       SRU  bb,bb,53
45
       STO  c,freq,b   Store new count.
46
       LDO  c,freq,bb
47
       SLU  b,a,48
48
       INCL c,1
49
       SRU  b,b,53
50
       STO  c,freq,bb
51
       LDO  c,freq,b   Load old count.
52
       SLU  bb,a,56
53
       INCL c,1
54
       SRU  bb,bb,53
55
       STO  c,freq,b   Store new count.
56
       LDO  c,freq,bb
57
       LDOU a,p,0
58
       INCL p,8
59
       INCL c,1
60
       BDIF t,ones,a
61
       STO  c,freq,bb
62
       PBZ  t,2B        Do main loop, unless near the end.
63
3H     SRU  b,a,53
64
       LDO  c,freq,b   Load old count.
65
       INCL c,1
66
       STO  c,freq,b   Store new count.
67
       SRU  b,b,3
68
       SLU  a,a,8
69
       PBNZ b,3B        Continue unless done.
70
       POP
71
 
72
Main   IS   Start
73
 

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.