def randomize(*args, **kwargs):
"""Randomize a list of variables"""
frame = inspect.stack()[1]
fields = []
for v in args:
if hasattr(v, "get_model"):
fields.append(v.get_model())
else:
raise Exception("Parameter \"" + str(v) +
" to randomize is not a vsc object")
debug = 0
if "debug" in kwargs.keys():
debug = kwargs["debug"]
solve_fail_debug = False
if "solve_fail_debug" in kwargs:
solve_fail_debug = kwargs["solve_fail_debug"]
randstate = None
if "randstate" in kwargs:
randstate = kwargs["randstate"]
else:
randstate = RandState(random.randint(0, 0xFFFFFFFF))
Randomizer.do_randomize(randstate,
SourceInfo(frame.filename, frame.lineno),
fields,
solve_fail_debug=solve_fail_debug,
debug=debug)
def test_incr(self):
obj = FieldCompositeModel("obj")
arr = obj.add_field(
FieldArrayModel(
"arr",
None, # type_t
True, # is_scalar
None, # not an enum-type list
32,
False,
True,
False))
for i in range(10):
arr.add_field()
obj.add_constraint(
ConstraintBlockModel("XX", [
ConstraintExprModel(
ExprBinModel(ExprFieldRefModel(arr.size), BinExprType.Eq,
ExprLiteralModel(10, False, 32)))
]))
foreach = ConstraintForeachModel(ExprFieldRefModel(arr))
foreach.addConstraint(
ConstraintImpliesModel(
ExprBinModel(ExprFieldRefModel(foreach.index), BinExprType.Gt,
ExprLiteralModel(0, False, 32)),
[
ConstraintExprModel(
ExprBinModel(
ExprArraySubscriptModel(
ExprFieldRefModel(arr),
ExprFieldRefModel(foreach.index)),
BinExprType.Eq,
ExprBinModel(
ExprArraySubscriptModel(
ExprFieldRefModel(arr),
ExprBinModel(
ExprFieldRefModel(foreach.index),
BinExprType.Sub,
ExprLiteralModel(1, False, 32))),
BinExprType.Add, ExprLiteralModel(
1, False, 32))))
]))
obj.add_constraint(ConstraintBlockModel("c", [foreach]))
# print("Object: " + ModelPrettyPrinter.print(obj))
#
# constraints = ArrayConstraintBuilder.build(obj)
# for c in constraints:
# print("Constraint: " + ModelPrettyPrinter.print(c))
# print("Object(1): " + ModelPrettyPrinter.print(obj))
#
# ConstraintOverrideRollbackVisitor.rollback(obj)
# print("Object(2): " + ModelPrettyPrinter.print(obj))
Randomizer.do_randomize([obj])
for f in arr.field_l:
print("" + f.name + ": " + str(int(f.get_val())))
def __exit__(self, t, v, tb):
c = pop_constraint_scope()
leave_expr_mode()
try:
Randomizer.do_randomize(self.field_l, [c])
except SolveFailure as e:
if _solve_fail_debug or self.solve_fail_debug:
print("Solve Failure")
raise e
def randomize(*args):
"""Randomize a list of variables"""
fields = []
for v in args:
if hasattr(v, "get_model"):
fields.append(v.get_model())
else:
raise Exception("Parameter \"" + str(v) +
" to randomize is not a vsc object")
Randomizer.do_randomize(fields)
def test_cross(self):
stim = FieldCompositeModel("stim", True)
f = FieldScalarModel("a", 16, False, True)
stim.add_field(f)
f2 = FieldScalarModel("b", 16, False, True)
stim.add_field(f2)
cg = CovergroupModel("cg")
cp = CoverpointModel(ExprFieldRefModel(f), "cp1",
CoverageOptionsModel())
cg.add_coverpoint(cp)
bn = CoverpointBinArrayModel("cp", 0, 1, 16)
cp.add_bin_model(bn)
cp2 = CoverpointModel(ExprFieldRefModel(f2), "cp2",
CoverageOptionsModel())
cg.add_coverpoint(cp2)
bn = CoverpointBinArrayModel("cp", 0, 1, 16)
cp2.add_bin_model(bn)
cr = CoverpointCrossModel("aXb",
CoverageOptionsModel())
cr.add_coverpoint(cp)
cr.add_coverpoint(cp2)
cg.add_coverpoint(cr)
gen = GeneratorModel("top")
gen.add_field(stim)
gen.add_covergroup(cg)
gen.finalize()
# Need a special randomizer to deal with generators
r = Randomizer()
count = 0
for i in range(1000):
r.do_randomize([gen])
cg.sample()
count += 1
cov = cg.get_coverage()
print("Coverage: (" + str(i) + ") " + str(cov))
if cov == 100:
break
self.assertEqual(cg.get_coverage(), 100)
# Ensure that we converge relatively quickly
self.assertLessEqual(count, (256+16+16))
def __exit__(self, t, v, tb):
frame = inspect.stack()[1]
c = pop_constraint_scope()
leave_expr_mode()
try:
Randomizer.do_randomize(self.randstate,
SourceInfo(frame.filename,
frame.lineno),
self.field_l, [c],
debug=debug)
except SolveFailure as e:
if _solve_fail_debug or self.solve_fail_debug:
print("Solve Failure")
raise e
def test_smoke(self):
obj = FieldCompositeModel("obj")
a = obj.add_field(FieldScalarModel("a", 8, False, True))
b = obj.add_field(FieldScalarModel("a", 8, False, True))
obj.add_constraint(
ConstraintBlockModel("c", [
ConstraintExprModel(
ExprBinModel(a.expr(), BinExprType.Lt, b.expr()))
]))
rand = Randomizer(RandState(0))
randstate = RandState(0)
rand.do_randomize(randstate, SourceInfo("", -1), [obj])
self.assertLess(a.val, b.val)
def test_coverpoint_bins(self):
stim = FieldCompositeModel("stim", True)
f = FieldScalarModel("a", 16, False, True)
stim.add_field(f)
f2 = FieldScalarModel("b", 16, False, True)
stim.add_field(f2)
cg = CovergroupModel("cg")
cp = CoverpointModel(ExprFieldRefModel(f), "cp1",
CoverageOptionsModel())
cg.add_coverpoint(cp)
cp.add_bin_model(CoverpointBinArrayModel("bn1", 0, 1, 16))
cp.add_bin_model(CoverpointBinCollectionModel.mk_collection("bn2", RangelistModel([
[17,65535-16-1]
]), 16))
cp.add_bin_model(CoverpointBinArrayModel("bn3", 0, 65535-16, 65535))
cp2 = CoverpointModel(ExprFieldRefModel(f2), "cp2",
CoverageOptionsModel())
cg.add_coverpoint(cp2)
bn = CoverpointBinArrayModel("cp", 0, 1, 16)
cp2.add_bin_model(bn)
gen = GeneratorModel("top")
gen.add_field(stim)
gen.add_covergroup(cg)
gen.finalize()
# Need a special randomizer to deal with generators
r = Randomizer()
count = 0
for i in range(1000):
r.do_randomize([gen])
cg.sample()
count += 1
cov = cg.get_coverage()
if cov == 100:
break
self.assertEqual(cg.get_coverage(), 100)
# Ensure that we converge relatively quickly
self.assertLessEqual(count, 64)
def test_smoke(self):
obj = FieldCompositeModel("obj")
arr = obj.add_field(
FieldArrayModel(
"arr",
None, # type_t
True,
None, # not an enum-type
32,
False,
True,
True))
# for i in range(10):
# arr.add_field()
obj.add_constraint(
ConstraintBlockModel("XX", [
ConstraintExprModel(
ExprBinModel(ExprFieldRefModel(arr.size), BinExprType.Eq,
ExprLiteralModel(10, False, 32)))
]))
foreach = ConstraintForeachModel(ExprFieldRefModel(arr))
foreach.addConstraint(
ConstraintExprModel(
ExprBinModel(
ExprArraySubscriptModel(ExprFieldRefModel(arr),
ExprFieldRefModel(foreach.index)),
BinExprType.Lt, ExprLiteralModel(10, False, 32))))
obj.add_constraint(ConstraintBlockModel("c", [foreach]))
# print("Object: " + ModelPrettyPrinter.print(obj))
#
# constraints = ArrayConstraintBuilder.build(obj)
# for c in constraints:
# print("Constraint: " + ModelPrettyPrinter.print(c))
# print("Object(1): " + ModelPrettyPrinter.print(obj))
#
# ConstraintOverrideRollbackVisitor.rollback(obj)
# print("Object(2): " + ModelPrettyPrinter.print(obj))
randstate = RandState(0)
Randomizer.do_randomize(randstate, SourceInfo("", -1), [obj])
for f in arr.field_l:
print("" + f.name + ": " + str(int(f.get_val())))
def test_wide_var(self):
obj = FieldCompositeModel("obj")
a = obj.add_field(FieldScalarModel("a", 1024, False, True))
obj.add_constraint(
ConstraintBlockModel("c", [
ConstraintExprModel(
ExprBinModel(
a.expr(), BinExprType.Gt,
ExprLiteralModel(0x80000000000000000, False, 72)))
]))
randstate = RandState(0)
rand = Randomizer(randstate)
rand.do_randomize(randstate, SourceInfo("", -1), [obj])
print("a=" + hex(int(a.val)))
self.assertGreater(a.val, ValueScalar(0x80000000000000000))
def test_smoke(self):
stim = FieldCompositeModel("stim", True)
f = FieldScalarModel("a", 16, False, True)
stim.add_field(f)
f2 = FieldScalarModel("b", 16, False, True)
stim.add_field(f2)
cg = CovergroupModel("cg")
cp = CoverpointModel(ExprFieldRefModel(f), "cp1",
CoverageOptionsModel())
cg.add_coverpoint(cp)
bn = CoverpointBinArrayModel("cp", 1, 16)
cp.add_bin_model(bn)
cp2 = CoverpointModel(ExprFieldRefModel(f2), "cp2",
CoverageOptionsModel())
cg.add_coverpoint(cp2)
bn = CoverpointBinArrayModel("cp", 1, 16)
cp2.add_bin_model(bn)
gen = GeneratorModel("top")
gen.add_field(stim)
gen.add_covergroup(cg)
gen.finalize()
# Need a special randomizer to deal with generators
r = Randomizer(RandState(0))
randstate = RandState(0)
count = 0
for i in range(1000):
r.do_randomize(randstate, SourceInfo("", -1), [gen])
cg.sample()
count += 1
cov = cg.get_coverage()
if cov == 100:
break
self.assertEqual(cg.get_coverage(), 100)
# Ensure that we converge relatively quickly
self.assertLessEqual(count, 32)
def __exit__(self, t, v, tb):
c = pop_constraint_scope()
leave_expr_mode()
Randomizer.do_randomize(self.field_l, [c])