163 lines
9.8 KiB
Python
163 lines
9.8 KiB
Python
import unittest
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from nmigen import *
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from nmigen.back.pysim import *
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from ..units.multiplier import *
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from ..isa import Funct3
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def test_op(funct3, src1, src2, result):
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def test(self):
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with Simulator(self.dut) as sim:
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def process():
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yield self.dut.x_op.eq(funct3)
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yield self.dut.x_src1.eq(src1)
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yield self.dut.x_src2.eq(src2)
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yield self.dut.x_stall.eq(0)
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yield Tick()
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yield self.dut.m_stall.eq(0)
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yield Tick()
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yield Tick()
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self.assertEqual((yield self.dut.w_result), result)
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sim.add_clock(1e-6)
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sim.add_sync_process(process)
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sim.run()
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return test
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class MultiplierTestCase(unittest.TestCase):
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def setUp(self):
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self.dut = Multiplier()
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# Test cases are taken from the riscv-compliance testbench:
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# https://github.com/riscv/riscv-compliance/tree/master/riscv-test-suite/rv32im
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# MUL ----------------------------------------------------------------------------
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test_mul_0 = test_op(Funct3.MUL, 0x00000000, 0x00000000, result=0x00000000)
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test_mul_1 = test_op(Funct3.MUL, 0x00000000, 0x00000001, result=0x00000000)
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test_mul_2 = test_op(Funct3.MUL, 0x00000000, 0xffffffff, result=0x00000000)
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test_mul_3 = test_op(Funct3.MUL, 0x00000000, 0x7fffffff, result=0x00000000)
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test_mul_4 = test_op(Funct3.MUL, 0x00000000, 0x80000000, result=0x00000000)
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test_mul_5 = test_op(Funct3.MUL, 0x00000001, 0x00000000, result=0x00000000)
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test_mul_6 = test_op(Funct3.MUL, 0x00000001, 0x00000001, result=0x00000001)
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test_mul_7 = test_op(Funct3.MUL, 0x00000001, 0xffffffff, result=0xffffffff)
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test_mul_8 = test_op(Funct3.MUL, 0x00000001, 0x7fffffff, result=0x7fffffff)
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test_mul_9 = test_op(Funct3.MUL, 0x00000001, 0x80000000, result=0x80000000)
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test_mul_10 = test_op(Funct3.MUL, 0xffffffff, 0x00000000, result=0x00000000)
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test_mul_11 = test_op(Funct3.MUL, 0xffffffff, 0x00000001, result=0xffffffff)
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test_mul_12 = test_op(Funct3.MUL, 0xffffffff, 0xffffffff, result=0x00000001)
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test_mul_13 = test_op(Funct3.MUL, 0xffffffff, 0x7fffffff, result=0x80000001)
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test_mul_14 = test_op(Funct3.MUL, 0xffffffff, 0x80000000, result=0x80000000)
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test_mul_15 = test_op(Funct3.MUL, 0x7fffffff, 0x00000000, result=0x00000000)
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test_mul_16 = test_op(Funct3.MUL, 0x7fffffff, 0x00000001, result=0x7fffffff)
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test_mul_17 = test_op(Funct3.MUL, 0x7fffffff, 0xffffffff, result=0x80000001)
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test_mul_18 = test_op(Funct3.MUL, 0x7fffffff, 0x7fffffff, result=0x00000001)
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test_mul_19 = test_op(Funct3.MUL, 0x7fffffff, 0x80000000, result=0x80000000)
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test_mul_20 = test_op(Funct3.MUL, 0x80000000, 0x00000000, result=0x00000000)
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test_mul_21 = test_op(Funct3.MUL, 0x80000000, 0x00000001, result=0x80000000)
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test_mul_22 = test_op(Funct3.MUL, 0x80000000, 0xffffffff, result=0x80000000)
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test_mul_23 = test_op(Funct3.MUL, 0x80000000, 0x7fffffff, result=0x80000000)
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test_mul_24 = test_op(Funct3.MUL, 0x80000000, 0x80000000, result=0x00000000)
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# MULH ---------------------------------------------------------------------------
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test_mulh_0 = test_op(Funct3.MULH, 0x00000000, 0x00000000, result=0x00000000)
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test_mulh_1 = test_op(Funct3.MULH, 0x00000000, 0x00000001, result=0x00000000)
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test_mulh_2 = test_op(Funct3.MULH, 0x00000000, 0xffffffff, result=0x00000000)
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test_mulh_3 = test_op(Funct3.MULH, 0x00000000, 0x7fffffff, result=0x00000000)
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test_mulh_4 = test_op(Funct3.MULH, 0x00000000, 0x80000000, result=0x00000000)
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test_mulh_5 = test_op(Funct3.MULH, 0x00000001, 0x00000000, result=0x00000000)
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test_mulh_6 = test_op(Funct3.MULH, 0x00000001, 0x00000001, result=0x00000000)
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test_mulh_7 = test_op(Funct3.MULH, 0x00000001, 0xffffffff, result=0xffffffff)
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test_mulh_8 = test_op(Funct3.MULH, 0x00000001, 0x7fffffff, result=0x00000000)
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test_mulh_9 = test_op(Funct3.MULH, 0x00000001, 0x80000000, result=0xffffffff)
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test_mulh_10 = test_op(Funct3.MULH, 0xffffffff, 0x00000000, result=0x00000000)
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test_mulh_11 = test_op(Funct3.MULH, 0xffffffff, 0x00000001, result=0xffffffff)
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test_mulh_12 = test_op(Funct3.MULH, 0xffffffff, 0xffffffff, result=0x00000000)
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test_mulh_13 = test_op(Funct3.MULH, 0xffffffff, 0x7fffffff, result=0xffffffff)
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test_mulh_14 = test_op(Funct3.MULH, 0xffffffff, 0x80000000, result=0x00000000)
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test_mulh_15 = test_op(Funct3.MULH, 0x7fffffff, 0x00000000, result=0x00000000)
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test_mulh_16 = test_op(Funct3.MULH, 0x7fffffff, 0x00000001, result=0x00000000)
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test_mulh_17 = test_op(Funct3.MULH, 0x7fffffff, 0xffffffff, result=0xffffffff)
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test_mulh_18 = test_op(Funct3.MULH, 0x7fffffff, 0x7fffffff, result=0x3fffffff)
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test_mulh_19 = test_op(Funct3.MULH, 0x7fffffff, 0x80000000, result=0xc0000000)
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test_mulh_20 = test_op(Funct3.MULH, 0x80000000, 0x00000000, result=0x00000000)
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test_mulh_21 = test_op(Funct3.MULH, 0x80000000, 0x00000001, result=0xffffffff)
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test_mulh_22 = test_op(Funct3.MULH, 0x80000000, 0xffffffff, result=0x00000000)
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test_mulh_23 = test_op(Funct3.MULH, 0x80000000, 0x7fffffff, result=0xc0000000)
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test_mulh_24 = test_op(Funct3.MULH, 0x80000000, 0x80000000, result=0x40000000)
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# MULHSU -------------------------------------------------------------------------
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test_mulhsu_0 = test_op(Funct3.MULHSU, 0x00000000, 0x00000000, result=0x00000000)
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test_mulhsu_1 = test_op(Funct3.MULHSU, 0x00000000, 0x00000001, result=0x00000000)
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test_mulhsu_2 = test_op(Funct3.MULHSU, 0x00000000, 0xffffffff, result=0x00000000)
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test_mulhsu_3 = test_op(Funct3.MULHSU, 0x00000000, 0x7fffffff, result=0x00000000)
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test_mulhsu_4 = test_op(Funct3.MULHSU, 0x00000000, 0x80000000, result=0x00000000)
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test_mulhsu_5 = test_op(Funct3.MULHSU, 0x00000001, 0x00000000, result=0x00000000)
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test_mulhsu_6 = test_op(Funct3.MULHSU, 0x00000001, 0x00000001, result=0x00000000)
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test_mulhsu_7 = test_op(Funct3.MULHSU, 0x00000001, 0xffffffff, result=0x00000000)
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test_mulhsu_8 = test_op(Funct3.MULHSU, 0x00000001, 0x7fffffff, result=0x00000000)
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test_mulhsu_9 = test_op(Funct3.MULHSU, 0x00000001, 0x80000000, result=0x00000000)
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test_mulhsu_10 = test_op(Funct3.MULHSU, 0xffffffff, 0x00000000, result=0x00000000)
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test_mulhsu_11 = test_op(Funct3.MULHSU, 0xffffffff, 0x00000001, result=0xffffffff)
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test_mulhsu_12 = test_op(Funct3.MULHSU, 0xffffffff, 0xffffffff, result=0xffffffff)
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test_mulhsu_13 = test_op(Funct3.MULHSU, 0xffffffff, 0x7fffffff, result=0xffffffff)
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test_mulhsu_14 = test_op(Funct3.MULHSU, 0xffffffff, 0x80000000, result=0xffffffff)
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test_mulhsu_15 = test_op(Funct3.MULHSU, 0x7fffffff, 0x00000000, result=0x00000000)
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test_mulhsu_16 = test_op(Funct3.MULHSU, 0x7fffffff, 0x00000001, result=0x00000000)
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test_mulhsu_17 = test_op(Funct3.MULHSU, 0x7fffffff, 0xffffffff, result=0x7ffffffe)
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test_mulhsu_18 = test_op(Funct3.MULHSU, 0x7fffffff, 0x7fffffff, result=0x3fffffff)
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test_mulhsu_19 = test_op(Funct3.MULHSU, 0x7fffffff, 0x80000000, result=0x3fffffff)
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test_mulhsu_20 = test_op(Funct3.MULHSU, 0x80000000, 0x00000000, result=0x00000000)
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test_mulhsu_21 = test_op(Funct3.MULHSU, 0x80000000, 0x00000001, result=0xffffffff)
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test_mulhsu_22 = test_op(Funct3.MULHSU, 0x80000000, 0xffffffff, result=0x80000000)
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test_mulhsu_23 = test_op(Funct3.MULHSU, 0x80000000, 0x7fffffff, result=0xc0000000)
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test_mulhsu_24 = test_op(Funct3.MULHSU, 0x80000000, 0x80000000, result=0xc0000000)
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# MULHU --------------------------------------------------------------------------
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test_mulhu_0 = test_op(Funct3.MULHU, 0x00000000, 0x00000000, result=0x00000000)
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test_mulhu_1 = test_op(Funct3.MULHU, 0x00000000, 0x00000001, result=0x00000000)
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test_mulhu_2 = test_op(Funct3.MULHU, 0x00000000, 0xffffffff, result=0x00000000)
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test_mulhu_3 = test_op(Funct3.MULHU, 0x00000000, 0x7fffffff, result=0x00000000)
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test_mulhu_4 = test_op(Funct3.MULHU, 0x00000000, 0x80000000, result=0x00000000)
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test_mulhu_5 = test_op(Funct3.MULHU, 0x00000001, 0x00000000, result=0x00000000)
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test_mulhu_6 = test_op(Funct3.MULHU, 0x00000001, 0x00000001, result=0x00000000)
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test_mulhu_7 = test_op(Funct3.MULHU, 0x00000001, 0xffffffff, result=0x00000000)
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test_mulhu_8 = test_op(Funct3.MULHU, 0x00000001, 0x7fffffff, result=0x00000000)
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test_mulhu_9 = test_op(Funct3.MULHU, 0x00000001, 0x80000000, result=0x00000000)
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test_mulhu_10 = test_op(Funct3.MULHU, 0xffffffff, 0x00000000, result=0x00000000)
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test_mulhu_11 = test_op(Funct3.MULHU, 0xffffffff, 0x00000001, result=0x00000000)
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test_mulhu_12 = test_op(Funct3.MULHU, 0xffffffff, 0xffffffff, result=0xfffffffe)
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test_mulhu_13 = test_op(Funct3.MULHU, 0xffffffff, 0x7fffffff, result=0x7ffffffe)
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test_mulhu_14 = test_op(Funct3.MULHU, 0xffffffff, 0x80000000, result=0x7fffffff)
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test_mulhu_15 = test_op(Funct3.MULHU, 0x7fffffff, 0x00000000, result=0x00000000)
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test_mulhu_16 = test_op(Funct3.MULHU, 0x7fffffff, 0x00000001, result=0x00000000)
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test_mulhu_17 = test_op(Funct3.MULHU, 0x7fffffff, 0xffffffff, result=0x7ffffffe)
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test_mulhu_18 = test_op(Funct3.MULHU, 0x7fffffff, 0x7fffffff, result=0x3fffffff)
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test_mulhu_19 = test_op(Funct3.MULHU, 0x7fffffff, 0x80000000, result=0x3fffffff)
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test_mulhu_20 = test_op(Funct3.MULHU, 0x80000000, 0x00000000, result=0x00000000)
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test_mulhu_21 = test_op(Funct3.MULHU, 0x80000000, 0x00000001, result=0x00000000)
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test_mulhu_22 = test_op(Funct3.MULHU, 0x80000000, 0xffffffff, result=0x7fffffff)
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test_mulhu_23 = test_op(Funct3.MULHU, 0x80000000, 0x7fffffff, result=0x3fffffff)
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test_mulhu_24 = test_op(Funct3.MULHU, 0x80000000, 0x80000000, result=0x40000000)
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