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#!/usr/bin/env python3
from test_utils import *
def make_alu_table() -> str:
alu = ALU()
n = 10000
alu.generate_cases(n)
alu.process()
print(f"[test] running {n} ALU test cases")
return alu.to_table().strip()
class ALU(TestGroup):
def __init__(self):
TestGroup.__init__(self, [
Param("A", 0x0, 0xffff),
Param("B", 0x0, 0xffff),
Param("S", 0, 7),
], [
"Y",
"FLAGS",
])
def process(self):
new_cases = []
for kase in self.cases:
S = kase["S"]
A = kase["A"]
B = kase["B"]
kase["FLAGS"] = "x"
match S:
case 0: Y = 0
case 1: Y = (B - A) & 0xFFFF
case 2: Y = (A - B) & 0xFFFF
case 3: Y = (A + B) & 0xFFFF
case 4: Y = (A ^ B) & 0xFFFF
case 5: Y = (A | B) & 0xFFFF
case 6: Y = (A & B) & 0xFFFF
case 7: Y = 0xffff
kase["Y"] = Y
new_cases.append(kase)
self.cases = new_cases
table = make_alu_table()
run_test("ALU", table)
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