File size: 6,769 Bytes
784ee2c | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 | #!/usr/bin/env ruby
#
# Extracts via layer stack information from the technology LEF file
#
# Usage: LEFViaData.rb -i tech_lef_file [-s sha_file] [-l layer_lef_file ]
# [-v via_lef_file ]
#
# This file needs to be located in ~/.klayout/ruby
#
require 'optparse'
require_relative 'LEFVia'
require_relative 'LEFLayer'
#
# Class to extract via layer stack information from technology LEF
#
class LEFViaData
#
# Initialization method
#
# via_map: stores the mapping from a key to the list of layers in the stack
# layer_ct: current layer count - used to set layer numbers establishing
# layer stack order
# start_via_re: regexp to find the start of the LEF VIA statement
# via_layer_re: regexp to extract the layer name in the via layer stack
# start_layer_re: regexp to find the start of the LEF LAYER statement
# rect_re: regexp to extract rect coords
# layer_type_re: regexp to extract LAYER TYPE
# end_re: regexp to find the end of a section
#
def initialize()
@layer_map = {}
@layer_ct = 0
@via_map = {}
@start_via_re = /^\s*VIA\s+(\S+)(?i)(\s+DEFAULT)?/
@via_layer_re = /^\s*LAYER\s+(\S+)\s*\;/
@start_layer_re = /^\s*LAYER\s+(\S+)\s*$/
@rect_re = /^\s*RECT\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)/
@layer_type_re = /^\s*TYPE\s+(\S+)/
@end_re = /^\s*END\s+\S+/
end
#
# Reads the tech LEF and creates the VIA map
#
def read_file(file_name)
fh = File.open(file_name, chomp: true)
if fh
read(fh)
fh.close
else
puts "Error: can't open " + file_name
end
end
#
# Reads the content from a stream and looks for the LEF LAYER and VIA
# statements. The layers are added to the layer_map and the vias are added
# to the via_map
#
def read(fh)
while (line = fh.gets)
result = line.match(@start_via_re)
if result
via_name = result[1]
is_default = result[2]
via = LEFVia.new(via_name, is_default)
read_via(fh, via)
@via_map[via.get_name()] = via
else
result = line.match(@start_layer_re)
if result
layer_name = result[1]
layer = LEFLayer.new(layer_name, @layer_ct)
read_layer(fh, layer)
@layer_map[layer_name] = layer
@layer_ct += 1
end
end
end
end
#
# Reads the LEF LAYER definition and adds it to the layer object
#
def read_layer(fh, layer)
while (line = fh.gets)
if line.match(@end_re)
return
end
result = line.match(@layer_type_re)
if result
layer.set_type(result[1])
end
end
end
#
# Reads the LEF VIA definition and adds it to the via object
#
def read_via(fh, via)
current_layer = nil
while (line = fh.gets)
if line.match(@end_re)
via.add_layer(current_layer)
return
end
result = line.match(@via_layer_re)
if result
if current_layer
via.add_layer(current_layer)
end
current_layer = LEFVia::LEFViaLayer.new(@layer_map[result[1]])
else
result = line.match(@rect_re)
if result
rect = [result[1].to_f, result[2].to_f, result[3].to_f, result[4].to_f]
current_layer.add_shape(rect)
end
end
end
end
#
# Accessor to get the via map
#
def get_map()
return @via_map
end
#
# Utility method to write out LEF VIA snippet to output stream
#
def write_via_lef(outfh)
@via_map.each do | via_name, via |
via.write_lef(outfh)
end
end
#
# Utility method to write out LEF VIA snippet to file
#
def write_via_lef_file(file_name)
outfh = File.open(file_name, "w")
write_via_lef(outfh)
outfh.close
end
#
# Utility method to write out SHA list to output stream
#
def write_sha(outfh)
@via_map.each do | via_name, via |
sha256 = via.sha256()
outfh.puts sprintf("%s %s", sha256, via_name)
end
end
#
# Utility method to write out SHA list to output file
#
def write_sha_file(file_name)
outfh = File.open(file_name, "w")
write_sha(outfh)
outfh.close
end
#
# Utility method to write out LEF LAYER snippet to output stream
#
def write_layer_lef(outfh)
sorted_layer_map = @layer_map.sort_by { |layer_name, layer| layer.get_number }.to_h
sorted_layer_map.each do | layer_name, layer |
layer.write_lef(outfh)
end
end
#
# Utility method to write out LEF LAYER snippet to output file
#
def write_layer_lef_file(file_name)
outfh = File.open(file_name, "w")
write_layer_lef(outfh)
outfh.close
end
#
# Standalone main driver
#
def LEFViaData.main()
options = {}
OptionParser.new do |opts|
opts.banner = "Usage: LEFViaData.rb -i tech_lef_file [-s <sha_file>] [-l <layer_lef_file>] [-v <via_lef_file]"
opts.on("-iTECH_LEF_FILE", "--input_file=TECH_LEF_FILE") do |input_file|
options[:input_file] = input_file
end
opts.on("-sSHA_FILE", "--sha_file=SHA_FILE") do |sha_file|
options[:sha_file] = sha_file
end
opts.on("-lLAYER_LEF_FILE", "--layer_lef_file=LAYER_LEF_FILE") do |layer_lef_file|
options[:layer_lef_file] = layer_lef_file
end
opts.on("-vVIA_LEF_FILE", "--via_lef_file=VIA_LEF_FILE") do |via_lef_file|
options[:via_lef_file] = via_lef_file
end
end.parse!
if options[:input_file]
rep = LEFViaData.new
rep.read_file(options[:input_file])
if options[:sha_file]
rep.write_sha_file(options[:sha_file])
end
if options[:layer_lef_file]
rep.write_layer_lef_file(options[:layer_lef_file])
end
if options[:via_lef_file]
rep.write_via_lef_file(options[:via_lef_file])
end
end
end
end
#
# Only call the main driver if we're calling this as a script
#
if __FILE__ == $0
LEFViaData.main()
end
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