diff options
Diffstat (limited to 'backends/smt2/smtio.py')
| -rw-r--r-- | backends/smt2/smtio.py | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/backends/smt2/smtio.py b/backends/smt2/smtio.py index 07bd92265..7af37bca2 100644 --- a/backends/smt2/smtio.py +++ b/backends/smt2/smtio.py @@ -53,6 +53,7 @@ class SmtModInfo: self.memories = dict() self.wires = set() self.wsize = dict() + self.clocks = dict() self.cells = dict() self.asserts = dict() self.covers = dict() @@ -404,6 +405,13 @@ class SmtIo: self.modinfo[self.curmod].wires.add(fields[2]) self.modinfo[self.curmod].wsize[fields[2]] = int(fields[3]) + if fields[1] == "yosys-smt2-clock": + for edge in fields[3:]: + if fields[2] not in self.modinfo[self.curmod].clocks: + self.modinfo[self.curmod].clocks[fields[2]] = edge + elif self.modinfo[self.curmod].clocks[fields[2]] != edge: + self.modinfo[self.curmod].clocks[fields[2]] = "event" + if fields[1] == "yosys-smt2-assert": self.modinfo[self.curmod].asserts["%s_a %s" % (self.curmod, fields[2])] = fields[3] @@ -672,6 +680,17 @@ class SmtIo: assert net_path[-1] in self.modinfo[mod].wsize return self.modinfo[mod].wsize[net_path[-1]] + def net_clock(self, mod, net_path): + for i in range(len(net_path)-1): + assert mod in self.modinfo + assert net_path[i] in self.modinfo[mod].cells + mod = self.modinfo[mod].cells[net_path[i]] + + assert mod in self.modinfo + if net_path[-1] not in self.modinfo[mod].clocks: + return None + return self.modinfo[mod].clocks[net_path[-1]] + def net_exists(self, mod, net_path): for i in range(len(net_path)-1): if mod not in self.modinfo: return False @@ -823,6 +842,7 @@ class MkVcd: self.f = f self.t = -1 self.nets = dict() + self.clocks = dict() def add_net(self, path, width): path = tuple(path) @@ -830,11 +850,19 @@ class MkVcd: key = "n%d" % len(self.nets) self.nets[path] = (key, width) + def add_clock(self, path, edge): + path = tuple(path) + assert self.t == -1 + key = "n%d" % len(self.nets) + self.nets[path] = (key, 1) + self.clocks[path] = (key, edge) + def set_net(self, path, bits): path = tuple(path) assert self.t >= 0 assert path in self.nets - print("b%s %s" % (bits, self.nets[path][0]), file=self.f) + if path not in self.clocks: + print("b%s %s" % (bits, self.nets[path][0]), file=self.f) def set_time(self, t): assert t >= self.t @@ -851,13 +879,32 @@ class MkVcd: print("$scope module %s $end" % path[len(scope)], file=self.f) scope.append(path[len(scope)-1]) key, width = self.nets[path] - print("$var wire %d %s %s $end" % (width, key, path[-1]), file=self.f) + if path in self.clocks and self.clocks[path][1] == "event": + print("$var event 1 %s %s $end" % (key, path[-1]), file=self.f) + else: + print("$var wire %d %s %s $end" % (width, key, path[-1]), file=self.f) for i in range(len(scope)): print("$upscope $end", file=self.f) print("$enddefinitions $end", file=self.f) + self.t = t assert self.t >= 0 + + if self.t > 0: + print("#%d" % (10 * self.t - 5), file=self.f) + for path in sorted(self.clocks.keys()): + if self.clocks[path][1] == "posedge": + print("b0 %s" % self.nets[path][0], file=self.f) + elif self.clocks[path][1] == "negedge": + print("b1 %s" % self.nets[path][0], file=self.f) + print("#%d" % (10 * self.t), file=self.f) print("1!", file=self.f) print("b%s t" % format(self.t, "032b"), file=self.f) + for path in sorted(self.clocks.keys()): + if self.clocks[path][1] == "negedge": + print("b0 %s" % self.nets[path][0], file=self.f) + else: + print("b1 %s" % self.nets[path][0], file=self.f) + |