#!/usr/bin/env python3
+# Initial version written by lkcl Oct 2020
+# This program analyses the Power 9 op codes and looks at in/out register uses
+# The results are displayed:
+# https://libre-soc.org/openpower/opcode_regs_deduped/
+#
+# It finds .csv files in the directory isatables/
+
import csv
import os
from os.path import dirname, join
from glob import glob
from collections import OrderedDict
-
+# Return absolute path (ie $PWD) + isatables + name
def find_wiki_file(name):
filedir = os.path.dirname(os.path.abspath(__file__))
tabledir = join(filedir, 'isatables')
file_path = join(tabledir, name)
return file_path
+# Return an array of dictionaries from the CSV file name:
def get_csv(name):
file_path = find_wiki_file(name)
with open(file_path, 'r') as csvfile:
reader = csv.DictReader(csvfile)
return list(reader)
+# This will return True if all values are true.
+# Not sure what this is about
def blank_key(row):
- for v in row.items():
+ #for v in row.values():
+ # if 'SPR' in v: # skip all SPRs
+ # return True
+ for v in row.values():
if v:
return False
return True
-keycolumns = ['in1', 'in2', 'in3', 'out', 'CR in', 'CR out',
- 'ldst len', 'rc', 'lk']
+# General purpose registers have names like: RA, RT, R1, ...
+# Floating point registers names like: FRT, FRA, FR1, ..., FRTp, ...
+# Return True if field is a register
+def isreg(field):
+ return field.startswith('R') or field.startswith('FR')
+
+
+# These are the attributes of the instructions,
+# register names
+keycolumns = ['unit', 'in1', 'in2', 'in3', 'out', 'CR in', 'CR out',
+ ] # don't think we need these: 'ldst len', 'rc', 'lk']
+
+tablecols = ['unit', 'in', 'outcnt', 'CR in', 'CR out',
+ ] # don't think we need these: 'ldst len', 'rc', 'lk']
+
def create_key(row):
res = OrderedDict()
#print ("row", row)
for key in keycolumns:
- # registers
- if key in ['in1', 'in2', 'in3', 'out']:
- if row[key].startswith('R'):
- res[key] = 'R'
- else:
- res[key] = '0'
- # CRs
+ # registers IN - special-case: count number of regs RA/RB/RC/RS
+ if key in ['in1', 'in2', 'in3']:
+ if 'in' not in res:
+ res['in'] = 0
+ if isreg(row[key]):
+ res['in'] += 1
+
+ # registers OUT
+ if key == 'out':
+ # If upd is 1 then increment the count of outputs
+ if 'outcnt' not in res:
+ res['outcnt'] = 0
+ if isreg(row[key]):
+ res['outcnt'] += 1
+ if row['upd'] == '1':
+ res['outcnt'] += 1
+
+ # CRs (Condition Register) (CR0 .. CR7)
if key.startswith('CR'):
if row[key].startswith('NONE'):
res[key] = '0'
else:
res[key] = '1'
- # LDST len
+ # unit
+ if key == 'unit':
+ if row[key] == 'LDST': # we care about LDST units
+ res[key] = row[key]
+ else:
+ res[key] = 'OTHER'
+ # LDST len (LoadStore length)
if key.startswith('ldst'):
if row[key].startswith('NONE'):
res[key] = '0'
if key == 'lk':
res[key] = row[key]
+ # Convert the numerics 'in' & 'outcnt' to strings
+ res['in'] = str(res['in'])
+ res['outcnt'] = str(res['outcnt'])
+
return res
+#
def dformat(d):
res = []
for k, v in d.items():
def tformat(d):
return ' | '.join(d) + "|"
+def keyname(row):
+ res = []
+ if row['unit'] != 'OTHER':
+ res.append(row['unit'])
+ if row['in'] != '0':
+ res.append('%sR' % row['in'])
+ if row['outcnt'] != '0':
+ res.append('%sW' % row['outcnt'])
+ if row['CR in'] == '1' and row['CR out'] == '1':
+ res.append("CRio")
+ elif row['CR in'] == '1':
+ res.append("CRi")
+ elif row['CR out'] == '1':
+ res.append("CRo")
+ return '-'.join(res)
+
def process_csvs():
csvs = {}
primarykeys = set()
dictkeys = OrderedDict()
+ # Expand that (all .csv files)
pth = find_wiki_file("*.csv")
+
+ # Ignore those containing: valid test sprs
for fname in glob(pth):
if 'valid' in fname:
continue
continue
if 'sprs' in fname:
continue
+
#print (fname)
csvname = os.path.split(fname)[1]
+ # csvname is something like: minor_59.csv, fname the whole path
csv = get_csv(fname)
csvs[fname] = csv
for row in csv:
continue
dkey = create_key(row)
key = tuple(dkey.values())
+ # print("key=", key)
dictkeys[key] = dkey
primarykeys.add(key)
if key not in bykey:
primarykeys.sort()
print ("# keys")
- print ()
+ print ('')
print ('[[!table data="""')
- print (tformat(keycolumns))
+ print (tformat(tablecols) + " name |")
for key in primarykeys:
- print (tformat(dictkeys[key].values()))
+ name = keyname(dictkeys[key])
+ print (tformat(dictkeys[key].values()) + " %s |" % name)
print ('"""]]')
- print ()
+ print ('')
for key in primarykeys:
- print ("## ", dformat(dictkeys[key]))
- print ()
+ name = keyname(dictkeys[key])
+ print ("## %s " % name)
+ print ('')
print ('[[!table data="""')
print (tformat(['CSV', 'opcode', 'asm', 'form']))
- for row in bykey[key]:
+ rows = bykey[key]
+ rows.sort()
+ for row in rows:
print (tformat(row))
print ('"""]]')
- print ()
+ print ('')
bykey = {}
for fname, csv in csvs.items():
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