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xschem/src/make_sym_from_spice.awk

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#!/usr/bin/awk -f
#
# File: make_sym_from_spice.awk
#
# This file is part of XSCHEM,
# a schematic capture and Spice/Vhdl/Verilog netlisting tool for circuit
# simulation.
# Copyright (C) 1998-2023 Stefan Frederik Schippers
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
#
# create xschem symbols from a spice netlist.
# Spice netlist should contain *.PININFO lines that specify the direction
# of ports otherwise inout is assumed for all symbol ports.
# Usage:
# make_sym_from_spice.awk netlist.spice
# Generated symbols should be in current directory
BEGIN{
sym_type = "subcircuit" # or "primitive"
inherited_pin["VGND"]=1
inherited_pin["VPWR"]=1
inherited_pin["VNB"]=1
inherited_pin["VPB"]=1
########################## JOIN ##########################
netlist_lines=0
first=1
while(err= (getline l) >0) {
gsub(/</,"[",l)
gsub(/>/,"]",l)
if(first) {
$0=l
first=0
}
else if(l !~/^\+/) {
netlist[netlist_lines++]=$0
$0=l
}
else $0 = $0 " " substr(l,2)
}
netlist[netlist_lines++]=$0
########################## END JOIN ##########################
skip=0
for(i=0;i<netlist_lines; i++) {
$0=netlist[i]
process_subckts()
}
skip=0
for(i=0;i<netlist_lines; i++) {
$0=netlist[i]
process()
}
}
function process_subckts( j, i,name)
{
if(skip==1 && toupper($1) ==".ENDS") { skip=0; return }
if(skip==1) return
if(toupper($1) ==".SUBCKT") {
curr_subckt=$2
sub(skip_symbol_prefix, "", curr_subckt)
pin_ar[curr_subckt, "name"] = $2
if(curr_subckt in cell) {print " process_subckt(); skipping " curr_subckt ; skip=1; return }
subckt[curr_subckt]=1
template=0
j = 1
for(i=3;i<=NF;i++) {
if($i~ /=/) { template=i; break}
if(!($i in inherited_pin)) {
pin_ar[curr_subckt,j]=$i
pin_ar[curr_subckt,"format"]=pin_ar[curr_subckt,"format"] " @@" $i
j++
} else {
if(pin_ar[curr_subckt,"extra"])
pin_ar[curr_subckt,"extra"] = pin_ar[curr_subckt,"extra"] " " $i
else
pin_ar[curr_subckt,"extra"] = $i
pin_ar[curr_subckt,"template"] = pin_ar[curr_subckt,"template"] " " $i "=" $i
pin_ar[curr_subckt,"format"]=pin_ar[curr_subckt,"format"] " @" $i
}
}
pin_ar[curr_subckt,"n"]=j-1
if(skip_symbol_prefix)
pin_ar[curr_subckt,"template"] = pin_ar[curr_subckt,"template"] " prefix=" skip_symbol_prefix
get_template(template)
if(skip_symbol_prefix)
pin_ar[curr_subckt,"extra"] = pin_ar[curr_subckt,"extra"] " prefix"
}
else if(toupper($1) ~ /^\*\.PININFO/) {
for(i=2;i<=NF;i++) {
name=$i; sub(/:.*/,"",name)
if($i ~ /:I$/ ) pin_ar[curr_subckt, "dir", name] = "I"
else if($i ~ /:O$/ ) pin_ar[curr_subckt, "dir", name] = "O"
else if($i ~ /:B$/ ) pin_ar[curr_subckt, "dir", name] = "B"
else { print "ERROR in .PININFO: ", $i " --> " $0 ; exit}
}
}
else if(toupper($1) ~ /^\*\.(I|O|IO)PIN/) {
if($1 ~ /^\*\.ipin/) { pin_ar[curr_subckt, "dir", $2] = "I" }
else if($1 ~ /^\*\.opin/) { pin_ar[curr_subckt, "dir", $2] = "O" }
else if($1 ~ /^\*\.iopin/) { pin_ar[curr_subckt, "dir", $2] = "B" }
}
}
function get_template(t, templ, i)
{
templ=""
if(t) for(i=t;i<=NF;i++) {
templ = templ $i " "
}
pin_ar[curr_subckt,"template"] = pin_ar[curr_subckt,"template"] " " templ
}
function process( i,name,param)
{
if(skip==1 && toupper($1) ==".ENDS") { skip=0; return }
if(skip==1) return
if(toupper($1) ==".SUBCKT") {
curr_subckt=$2
sub(skip_symbol_prefix, "", curr_subckt)
if(curr_subckt in cell) {print "process(): skipping " curr_subckt ; skip=1; return }
space=20
width=150
lwidth=20
textdist=5
labsize=0.2
titlesize=0.3
text_voffset=20
xoffset=1300
yoffset=0
prev_size=0
lab_voffset=4
sp=ip=op=n_pin=0
all_signals=""
delete net_ar
subckt_netlist = "" # 20111009 all netlist lines except component instances (X)
}
else if(toupper($1) ~ /^.ENDS/) {
compact_pinlist( "" , curr_subckt)
print_sym(curr_subckt, pin_ar[curr_subckt,"template"], \
pin_ar[curr_subckt,"format"], pin_ar[curr_subckt,"name"], \
sym_type, pin_ar[curr_subckt,"extra"], dir_ret, pin_ret)
}
}
function get_param(i, param,j)
{
param=""
if(i) for(j=i;j<=NF;j++) {
param = param $j " "
}
return param
}
function compact_pinlist(inst,inst_sub , prevgroup, group,i,ii,base,curr,curr_n,np)
{
delete pin_ret
delete net_ret
delete dir_ret
np=pin_ar[inst_sub,"n"]
# print " compact_pinlist: inst=" inst " np= " np " inst_sub=" inst_sub
if(np) {
ii=1
for(i=1;i<=np;i++) {
group=0
# print "compact_pinlist: i=" i " inst_sub=" inst_sub " pin_ar[inst_sub,i]=" pin_ar[inst_sub,i]
# print "compact_pinlist: net_ar[inst,i]=" net_ar[inst,i]
if(net_ar[inst,i] ~/,/) group=1
base =lab_name( pin_ar[inst_sub,i] )
if(i==1) {prevgroup=group; curr=base; curr_n=i}
else {
if(prevgroup || base != curr) {
if(prevgroup) pin_ret[ii] = pin_ar[inst_sub,i-1]
else pin_ret[ii] = compact_label(inst_sub,pin_ar,curr_n,i-1)
if(inst) {
if(prevgroup) net_ret[ii] = compact_label_str(net_ar[inst,i-1])
else net_ret[ii] = compact_label(inst,net_ar,curr_n,i-1)
}
dir_ret[ii] = pin_ar[inst_sub,"dir",pin_ar[inst_sub,i-1] ]
if(dir_ret[ii] == "") dir_ret[ii] = "B"
ii++
curr=base;curr_n=i
prevgroup=group
}
}
}
}
pin_ret[ii] = compact_label(inst_sub, pin_ar,curr_n,np)
if(inst) {
if(group) net_ret[ii] = compact_label_str(net_ar[inst, np])
else net_ret[ii] = compact_label(inst, net_ar,curr_n,np)
}
dir_ret[ii] = pin_ar[inst_sub,"dir",pin_ar[inst_sub,np] ]
if(dir_ret[ii] == "") dir_ret[ii] = "B"
pin_ret["n"] = dir_ret["n"] = ii
if(inst) net_ret["n"] = ii
}
# 1 2 3 4 5 6 7 8 9 10 11 12
# PP A[3] A[2] A[1] B C K[10] K[9] K[5] K[4] K[3] K[1]
function compact_label_str(str, a, b, ar, ret,start,i)
{
# print "compact_label_str(): str=" str
a=1
b=split(str, ar,",")
ret=""
for(i=a;i<=b;i++) {
if(i==a) {start=a}
else {
if(ar[i-1] !~ /\[/) {
if(ar[i-1] != ar[i]) {
if(start < i-1) { ret = ret (i-start) "*" ar[i-1] ","; start=i }
else {ret = ret ar[i-1] ","; start=i }
}
}
else if(lab_name(ar[i])!=lab_name(ar[i-1])) { # lab basename changed
if(start<i-1 && lab_index(ar[start]) == lab_index(ar[i-1]) )
ret = ret (i-start) "*" ar[i-1] ",";
else if(start<i-1)
ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) ":" lab_index(ar[i-1]) "],"
else
ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) "],"
start=i
}
else if( lab_index(ar[i]) != lab_index(ar[i-1])-1 && # index not equal, +1,-1
lab_index(ar[i]) != lab_index(ar[i-1])+1 ) { # to previous
if(start<i-1 && lab_index(ar[start]) == lab_index(ar[i-1]) )
ret = ret (i-start) "*" ar[i-1] ",";
else if(start<i-1)
ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) ":" lab_index(ar[i-1]) "],"
else
ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) "],"
start=i
}
else if( lab_index(ar[start])!=lab_index(ar[i]) && # range count != element count
abs(start-i)!=abs(lab_index(ar[start])-lab_index(ar[i]))) {
if(start<i-1 && lab_index(ar[start]) == lab_index(ar[i-1]) )
ret = ret (i-start) "*" ar[i-1] ",";
else if(start<i-1)
ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) ":" lab_index(ar[i-1]) "],"
else
ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) "],"
start=i
}
# else if( lab_index(ar[i]) != lab_index(ar[start]) ) {
# if(start<i-1 && lab_index(ar[start]) == lab_index(ar[i-1]) )
# ret = ret (i-start) "*" ar[i-1] ",";
# else if(start<i-1)
# ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) ":" lab_index(ar[i-1]) "],"
# else
# ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) "],"
# start=i
# }
}
}
if(ar[b] !~ /\[/) {
if(start < b) ret = ret (b-start+1) "*" ar[b]
else ret = ret ar[b]
}
else if(start<b && lab_index(ar[start]) == lab_index(ar[b]))
ret = ret (b-start+1) "*" ar[b]
else if(start<b)
ret = ret lab_name(ar[start]) "[" lab_index(ar[start]) ":" lab_index(ar[b]) "]"
else
ret = ret lab_name(ar[b]) "[" lab_index(ar[b]) "]"
# print "compact_label_str(): ret=" ret
return ret
}
# 1 2 3 4 5 6 7 8 9 10 11 12
# PP A[3] A[2] A[1] B C K[10] K[9] K[5] K[4] K[3] K[1]
function compact_label(name, ar,a,b, ret,start,i)
{
ret=""
for(i=a;i<=b;i++) {
# print "compact_label(): ar[" name ", " i "]=" ar[name,i]
if(i==a) {start=a}
else {
if(ar[name,i-1] !~ /\[/) {
if(ar[name,i-1] != ar[name,i]) {
if(start < i-1) { ret = ret (i-start) "*" ar[name,i-1] ","; start=i }
else {ret = ret ar[name,i-1] ","; start=i }
}
}
else if(lab_name(ar[name,i])!=lab_name(ar[name,i-1])) {
if(start<i-1 && lab_index(ar[name,start]) == lab_index(ar[name,i-1]) )
ret = ret (i-start) "*" ar[name,i-1] ",";
else if(start<i-1)
ret = ret lab_name(ar[name,start]) "[" lab_index(ar[name,start]) ":" lab_index(ar[name,i-1]) "],"
else
ret = ret lab_name(ar[name,start]) "[" lab_index(ar[name,start]) "],"
start=i
}
else if(lab_index(ar[name,i]) != lab_index(ar[name,i-1])-1 &&
lab_index(ar[name,i]) != lab_index(ar[name,i-1])+1 ) {
if(start<i-1 && lab_index(ar[name,start]) == lab_index(ar[name,i-1]) )
ret = ret (i-start) "*" ar[name,i-1] ",";
else if(start<i-1)
ret = ret lab_name(ar[name,start]) "[" lab_index(ar[name,start]) ":" lab_index(ar[name,i-1]) "],"
else
ret = ret lab_name(ar[name,start]) "[" lab_index(ar[name,start]) "],"
start=i
}
else if( lab_index(ar[name,start])!=lab_index(ar[name,i]) &&
abs(start-i)!=abs(lab_index(ar[name,start])-lab_index(ar[name,i])) ) {
if(start<i-1 && lab_index(ar[name,start]) == lab_index(ar[name,i-1]) )
ret = ret (i-start) "*" ar[name,i-1] ",";
else if(start<i-1)
ret = ret lab_name(ar[name,start]) "[" lab_index(ar[name,start]) ":" lab_index(ar[name,i-1]) "],"
else
ret = ret lab_name(ar[name,start]) "[" lab_index(ar[name,start]) "],"
start=i
}
}
}
if(ar[name,b] !~ /\[/) {
if(start < b) ret = ret (b-start+1) "*" ar[name,b]
else ret = ret ar[name,b]
}
else if(start<b && lab_index(ar[name,start]) == lab_index(ar[name,b]))
ret = ret (b-start+1) "*" ar[name,b]
else if(start<b)
ret = ret lab_name(ar[name,start]) "[" lab_index(ar[name,start]) ":" lab_index(ar[name,b]) "]"
else
ret = ret lab_name(ar[name,b]) "[" lab_index(ar[name,b]) "]"
return ret
}
function lab_name(lab)
{
sub(/\[.*/,"",lab)
return lab
}
function lab_index(lab)
{
sub(/.*\[/,"",lab)
sub(/\].*/,"",lab)
if( (lab ~/:/) || (lab ~/,/) ) return lab # 20161225
else return lab+0
}
function print_sym(sym, template, format, subckt_name, sym_type, extra, dir, pin,
size,space,width,lwidth,textdist,labsize,titlesize,
i,name,text_voffset,lab_voffset,ip,op,n_pin ,m,x,y,n,
iii,ooo)
{
size=2.5
space=20
width=150
lwidth=20
textdist=5
labsize=0.2
titlesize=0.3
text_voffset=20
lab_voffset=4
ip=op=n_pin=0
name=sym
sym = sym ".sym"
# G {type=subcircuit
# vhdl_stop=true
# verilog_stop=true;
# format="@name @pinlist @symname"
# template="name=x1"}
print "start print symbol: " sym
print "v {xschem version=3.4.5 file_version=1.2}" > sym
print "K {type=" sym_type > sym
# print "format=\"@name @pinlist @symname " format_translate(template) "\"" > sym
iii = format_translate(template, extra)
if(iii) iii = " " iii
# since awk strings use backslash escapes and sub also uses backslash escapes (example for \& substitution)
# there are 2 levels of escape substitutions, we need \\\\ to generate one \.
# in the xschem file \\\\ is reduced to \\ in the format string and finally format contains one \
if(skip_symbol_prefix) sub(skip_symbol_prefix, "@prefix\\\\\\\\\\\\\\\\", subckt_name)
print "format=\"@name" format " " subckt_name iii "\"" > sym
print "template=\"name=x1" template "\"" > sym
print "extra=\"" extra "\"}" > sym
# print "T {@symname}" ,-length(name)/2*titlesize*30, -text_voffset*titlesize,0,0,
# titlesize, titlesize, "{}" >sym
print "T {@symname}" ,0, -text_voffset*titlesize,0,0,
titlesize, titlesize, "{hcenter=true}" >sym
n_pin=pin["n"]
ip=op=0
for(i=1; i<=n_pin; i++) {
if(dir[i] ~ /[OB]/) {
op++
}
else if(dir[i] ~ /I/) ip++
else {print "ERROR: print_sym(): undefined dir[] i=" i " inst=" inst " sub=" component_name ; exit}
}
n=ip;if(op>n) n=op
if(n==0) n=1
m=(n-1)/2
y=-m*space
x=-width
print "T {@name}",-x-lwidth+5, y-space/2-8-lab_voffset,0,0,labsize, labsize,"{}" >sym
print "L 4 " (x+lwidth) ,y-space/2,(-x-lwidth) , y-space/2,"{}" >sym
print "L 4 " (x+lwidth) ,y+n*space-space/2,(-x-lwidth) , y+n*space-space/2,"{}" >sym
print "L 4 " (x+lwidth) ,y-space/2,(x+lwidth) , y+n*space-space/2,"{}" >sym
print "L 4 " (-x-lwidth) ,y-space/2,(-x-lwidth) , y+n*space-space/2,"{}" >sym
iii=ooo=0
for(i=1;i<=n_pin;i++)
{
pin_dir=dir[i]
if(pin_dir=="I")
{
printf "B 5 " (x-size) " " (y+iii*space-size) " " (x+size) " " (y+iii*space+size) \
" {name=" pin[i] " dir=in " >sym
printf "}\n" >sym
print "L 4 " x,y+iii*space,x+lwidth, y+iii*space,"{}" >sym
print "T {" pin[i] "}",x+lwidth+textdist,y+iii*space-lab_voffset,0,0,labsize, labsize, "{}" >sym
iii++
}
if(pin_dir=="O")
{
printf "B 5 " (-x-size) " " (y+ooo*space-size) " " (-x+size) " " (y+ooo*space+size) \
" {name=" pin[i] " dir=out " >sym
printf "}\n" >sym
print "L 4 " (-x-lwidth),(y+ooo*space),(-x), (y+ooo*space),"{}" >sym
print "T {" pin[i] "}",-x-lwidth-textdist,y+ooo*space-lab_voffset,0,1,labsize, labsize, "{}" >sym
ooo++
}
if(pin_dir=="B")
{
printf "B 5 " (-x-size) " " (y+ooo*space-size) " " (-x+size) " " (y+ooo*space+size) \
" {name=" pin[i] " dir=inout " >sym
printf "}\n" >sym
print "L 7 " (-x-lwidth),(y+ooo*space),(-x), (y+ooo*space),"{}" >sym
print "T {" pin[i] "}",-x-lwidth-textdist,y+ooo*space-lab_voffset,0,1,labsize, labsize, "{}" >sym
ooo++
}
}
close(sym)
}
#------------------------------
function escape_brackets(s , ss)
{
ss = s
gsub(/[{}]/, "\\\\&", ss)
return ss
}
function abs(a)
{
return a>0 ? a: -a
}
function format_translate(s, extra, n_extra, extra_arr, extra_hash, c,quote,str,n,i,ss,sss)
{
# 20140321
str=""
quote=0
for(i=1; i< length(s); i++) {
c = substr(s,i,1)
if(c == "\"") quote=!quote
if(quote && c==" ") str = str SUBSEP
else str = str c
}
s = str
# /20140321
str=""
n_extra = split(extra, extra_arr)
for(i = 1; i <= n_extra; i++) extra_hash[ extra_arr[i] ] = 1
n=split(s,ss)
for(i=1;i<=n;i++) {
gsub(SUBSEP," ", ss[i])
if(ss[i] ~ /[^=]+=[^=]+/) {
split(ss[i],sss,"=")
if(!(sss[1] in extra_hash)) ss[i] = sss[1] "=@" sss[1]
else ss[i] = ""
}
str = str ss[i]
if(i<n && ss[i] ) str=str " "
}
delete extra_hash
return str
}
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