1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197 | ###############################################################################
# Copyright (c) 2020-2024 by Altair Engineering, Inc.
# All rights reserved.
#
# Altair Engineering, Inc. makes this software available as part of the Vision
# tool platform. As long as you are a licensee of the Vision tool platform
# you may make copies of the software and modify it to be used within the
# Vision tool platform, but you must include all of this notice on any copy.
# Redistribution without written permission to any third party, with or
# without modification, is not permitted.
# Altair Engineering, Inc. does not warrant that this software is error free
# or fit for any purpose. Altair Engineering, Inc. disclaims any liability for
# all claims, expenses, losses, damages and costs any user may incur as a
# result of using, copying or modifying the software.
# =============================================================================
# @userware
# Report Logic Loop
# @section
# Create Reports
# @description
# Example Tcl script that uses Zdb API commands to get logic loops.
# Usage:
# starsh reportLogicLoop.tcl design.zdb report.txt
# @files
# cust33/reportLogicLoop.tcl
# @tag
# zdb batch report cone
###############################################################################
# =============================================================================
# Start - Report logic loops in a design.
# =============================================================================
#
proc ReportLogicLoop:Start {db report} {
##
# init visit table
#
array set visit {}
##
# Open the report file.
#
set out [open $report "w"]
##
# Get the top design.
#
set top [$db get_top_design]
##
# Get start toplevel output/inout ports.
#
set processList {}
$db foreach port $top port {
##
# Check direction of port
#
if {[$db directionOf $port] ne "input"} {
lappend processList $port
}
}
##
# Repeat until no more pins/ports need to be processed
#
while {[llength $processList] > 0} {
##
# Init next list
#
set nextList {}
##
# Look on paths for each start
#
foreach processOid $processList {
##
# check for already processed instances
#
if {[$db oid type $processOid] eq "pin"} {
if {[info exists visit($processOid)]} {
continue
}
set visit($processOid) true
}
##
# Get paths for startOid
# stop at clocked cell or loop
#
set result [$db cone \
-in \
-paths \
-targetLoop \
-checkArcs \
-emptyModAsPrim \
-targetFlaggedCell clock \
-autoPopulate \
$processOid]
##
# Check each path
#
foreach path $result {
##
# Get Oidlist of path
#
set oidList [lrange $path 1 end]
##
# Get end of oidList
#
set endOid [lindex $oidList end]
##
# Check whether end of path is clocked cell pin
#
set clocked false
if {[$db oid type $endOid] eq "pin"} {
set endInst [$db oid convertTo inst $endOid]
set endCell [$db oid down $endInst]
if {[$db flag $endCell is clock]} {
set clocked true
}
}
if {$clocked} {
##
# If a clocked cell was at the end of path
# add it's input/inout to the nextList
# for later processing.
#
$db foreach pin $endInst pin {
set dir [$db directionOf $pin]
if {$dir ne "output"} {
lappend nextList $pin
}
}
} else {
##
# If there is not a clocked cell at the end of path
# report it as loop.
#
puts $out "----------------------------------"
foreach oid $oidList {
puts $out "\t[$db oid print $oid]"
}
}
}
}
##
# Process nextList
#
set processList $nextList
}
##
# Close the report file.
#
close $out
}
##
# Check for 2 command line options
#
if {$argc != 2} {
set msg "Wrong #of args. Usage:\n"
append msg "[info nameofexecutable] [info script] <BINFILE> <REPORTFILE>"
error $msg
}
##
# The design is given as the first argument on the command line.
#
set binfile [lindex $argv 0]
##
# The report file is the second argument on the command line.
#
set report [lindex $argv 1]
##
# Open the binfile.
#
set db [zdb open $binfile]
##
# Create logic loop report.
#
ReportLogicLoop:Start $db $report
##
# Close the opened database.
#
$db close
|