Improve dependencies.py and add a --synth option

dependencies.py was pretty terrible at actually determining
dependencies. This improves it and also adds a --synth option.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
pull/141/head
Anton Blanchard 5 years ago committed by Anton Blanchard
parent ffca138b78
commit d92f3da606

@ -5,21 +5,101 @@

import sys
import re
import os
from collections import defaultdict

if len(sys.argv) == 1 and sys.argv[1] == '--help':
print("Usage: dependencies.py [--synth]")
sys.exit(1)

synth = False
args = sys.argv[1:]
if sys.argv[1] == '--synth':
synth = True
args = sys.argv[2:]

# Look at what a file provides
entity = re.compile('entity (.*) is')
package = re.compile('package (.*) is')

# Look at what a file depends on
work = re.compile('use work\.([^.]+)\.')
entity = re.compile('entity work\.(.*)')
entity_work = re.compile('entity work\.([^;]+)')

for filename in sys.argv[1:]:
with open(filename, 'r') as f:
(basename, suffix) = filename.split('.')
print('%s.o:' % basename, end='')
# Synthesis targets
synth_provides = {
"dmi_dtm" : "dmi_dtm_dummy.vhdl",
"clock_generator" : "fpga/clk_gen_bypass.vhd",
"main_bram" : "fpga/main_bram.vhdl",
"pp_soc_uart" : "fpga/pp_soc_uart.vhd"
}

# Simulation targets
sim_provides = {
"dmi_dtm" : "dmi_dtm_xilinx.vhdl",
"clock_generator" : "fpga/clk_gen_bypass.vhd",
"main_bram" : "sim_bram.vhdl",
"pp_soc_uart" : "sim_uart.vhdl"
}

if synth:
provides = synth_provides
else:
provides = sim_provides

dependencies = defaultdict(set)

for filename in args:
with open(filename, 'r') as f:
for line in f:
m = work.search(line)
l = line.rstrip(os.linesep)
m = entity.search(l)
if m:
print(' %s.o' % m.group(1), end='')
p = m.group(1)
if p not in provides:
provides[p] = filename

m = entity.search(line)
m = package.search(l)
if m:
print(' %s.o' % m.group(1), end='')
print()
p = m.group(1)
if p not in provides:
provides[p] = filename

m = work.search(l)
if m:
dependency = m.group(1)
dependencies[filename].add(dependency)

m = entity_work.search(l)
if m:
dependency = m.group(1)
dependencies[filename].add(dependency)


emitted = set()
def chase_dependencies(filename):
if filename not in dependencies:
if filename not in emitted:
print("%s " % (filename), end="")
emitted.add(filename)
else:
for dep in dependencies[filename]:
f = provides[dep]
chase_dependencies(f)
if f not in emitted:
print("%s " % (f), end="")
emitted.add(f)


if synth:
chase_dependencies("fpga/toplevel.vhdl")
print("fpga/toplevel.vhdl")
else:
for filename in dependencies:
(basename, suffix) = filename.split('.')
print("%s.o:" % (basename), end="")
for dependency in dependencies[filename]:
p = provides[dependency]
(basename2, suffix2) = p.split('.')
print(" %s.o" % (basename2), end="")
print("")

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