litex/misoclib/tools/litescope/host/dump/__init__.py

110 lines
2.0 KiB
Python

def dec2bin(d, nb=0):
if d=="x":
return "x"*nb
elif d==0:
b="0"
else:
b=""
while d!=0:
b="01"[d&1]+b
d=d>>1
return b.zfill(nb)
def get_bits(values, low, high=None):
r = []
if high is None:
high = low+1
for val in values:
t = (val >> low) & (2**(high-low)-1)
r.append(t)
return r
class Dat(list):
def __init__(self, width):
self.width = width
def __getitem__(self, key):
if isinstance(key, int):
return get_bits(self, key)
elif isinstance(key, slice):
if key.start != None:
start = key.start
else:
start = 0
if key.stop != None:
stop = key.stop
else:
stop = self.width
if stop > self.width:
stop = self.width
if key.step != None:
raise KeyError
return get_bits(self, start, stop)
else:
raise KeyError
def decode_rle(self):
datas = Dat(self.width-1)
last_data = 0
for data in self:
rle = data >> (self.width-1)
data = data & (2**(self.width-1)-1)
if rle:
for i in range(data):
datas.append(last_data)
else:
datas.append(data)
last_data = data
return datas
class Var:
def __init__(self, name, width, values=[], type="wire", default="x"):
self.type = type
self.width = width
self.name = name
self.val = default
self.values = values
self.vcd_id = None
def set_vcd_id(self, s):
self.vcd_id = s
def __len__(self):
return len(self.values)
def change(self, cnt):
r = ""
try :
if self.values[cnt+1] != self.val:
r += "b"
r += dec2bin(self.values[cnt+1], self.width)
r += " "
r += self.vcd_id
r += "\n"
return r
except :
return r
return r
class Dump:
def __init__(self):
self.vars = []
self.vcd_id = "!"
def add(self, var):
var.set_vcd_id(self.vcd_id)
self.vcd_id = chr(ord(self.vcd_id)+1)
self.vars.append(var)
def add_from_layout(self, layout, var):
i=0
for s, n in layout:
self.add(Var(s, n, var[i:i+n]))
i += n
def __len__(self):
l = 0
for var in self.vars:
l = max(len(var),l)
return l