-from nmigen import Module, Signal
-from nmigen.sim.pysim import Simulator, Delay, Settle
-from nmigen.cli import rtlil
import unittest
-from soc.decoder.isa.caller import ISACaller, special_sprs
-from soc.decoder.power_decoder import (create_pdecode)
-from soc.decoder.power_decoder2 import (PowerDecode2)
-from soc.decoder.power_enums import (XER_bits, Function, MicrOp, CryIn)
-from soc.decoder.selectable_int import SelectableInt
+from soc.fu.mul.test.helper import MulTestHelper
from soc.simulator.program import Program
-from soc.decoder.isa.all import ISA
from soc.config.endian import bigendian
-
-from soc.fu.test.common import (TestAccumulatorBase, TestCase, ALUHelpers)
-from soc.fu.mul.pipeline import MulBasePipe
-from soc.fu.mul.pipe_data import MulPipeSpec
+from soc.fu.test.common import (TestAccumulatorBase)
import random
-def get_cu_inputs(dec2, sim):
- """naming (res) must conform to MulFunctionUnit input regspec
- """
- res = {}
-
- yield from ALUHelpers.get_sim_int_ra(res, sim, dec2) # RA
- yield from ALUHelpers.get_sim_int_rb(res, sim, dec2) # RB
- yield from ALUHelpers.get_sim_xer_so(res, sim, dec2) # XER.so
-
- print("alu get_cu_inputs", res)
-
- return res
-
-
-def set_alu_inputs(alu, dec2, sim):
- # TODO: see https://bugs.libre-soc.org/show_bug.cgi?id=305#c43
- # detect the immediate here (with m.If(self.i.ctx.op.imm_data.imm_ok))
- # and place it into data_i.b
-
- inp = yield from get_cu_inputs(dec2, sim)
- print("set alu inputs", inp)
- yield from ALUHelpers.set_int_ra(alu, dec2, inp)
- yield from ALUHelpers.set_int_rb(alu, dec2, inp)
-
- yield from ALUHelpers.set_xer_so(alu, dec2, inp)
-
-
-# This test bench is a bit different than is usual. Initially when I
-# was writing it, I had all of the tests call a function to create a
-# device under test and simulator, initialize the dut, run the
-# simulation for ~2 cycles, and assert that the dut output what it
-# should have. However, this was really slow, since it needed to
-# create and tear down the dut and simulator for every test case.
-
-# Now, instead of doing that, every test case in MulTestCase puts some
-# data into the test_data list below, describing the instructions to
-# be tested and the initial state. Once all the tests have been run,
-# test_data gets passed to TestRunner which then sets up the DUT and
-# simulator once, runs all the data through it, and asserts that the
-# results match the pseudocode sim at every cycle.
-
-# By doing this, I've reduced the time it takes to run the test suite
-# massively. Before, it took around 1 minute on my computer, now it
-# takes around 3 seconds
-
-
-class MulTestCase(TestAccumulatorBase):
-
+class MulTestCases2Arg(TestAccumulatorBase):
def case_all(self):
instrs = ["mulhw",
"mulhw.", "mullw",
for instr in instrs:
l = [f"{instr} 3, 1, 2"]
- for ra in test_values:
- for rb in test_values:
- initial_regs = [0] * 32
- initial_regs[1] = ra
- initial_regs[2] = rb
- # use "with" so as to close the files used
- with Program(l, bigendian) as prog:
+ # use "with" so as to close the files used
+ with Program(l, bigendian) as prog:
+ for ra in test_values:
+ for rb in test_values:
+ initial_regs = [0] * 32
+ initial_regs[1] = ra
+ initial_regs[2] = rb
self.add_case(prog, initial_regs)
def case_all_rb_randint(self):
for instr in instrs:
l = [f"{instr} 3, 1, 2"]
- for ra in test_values:
- initial_regs = [0] * 32
- initial_regs[1] = ra
- initial_regs[2] = random.randint(0, (1 << 64)-1)
- # use "with" so as to close the files used
- with Program(l, bigendian) as prog:
+ # use "with" so as to close the files used
+ with Program(l, bigendian) as prog:
+ for ra in test_values:
+ initial_regs = [0] * 32
+ initial_regs[1] = ra
+ initial_regs[2] = random.randint(0, (1 << 64)-1)
self.add_case(prog, initial_regs)
def case_all_rb_close_to_ov(self):
]
for instr in instrs:
- for i in range(20):
- x = 0x7fffffff + random.randint((-1 << 31), (1 << 31) - 1)
- ra = random.randint(0, (1 << 32)-1)
- rb = x // ra
-
- l = [f"{instr} 3, 1, 2"]
- initial_regs = [0] * 32
- initial_regs[1] = ra
- initial_regs[2] = rb
- # use "with" so as to close the files used
- with Program(l, bigendian) as prog:
+ l = [f"{instr} 3, 1, 2"]
+ # use "with" so as to close the files used
+ with Program(l, bigendian) as prog:
+ for i in range(20):
+ x = 0x7fffffff + random.randint((-1 << 31), (1 << 31) - 1)
+ ra = random.randint(0, (1 << 32)-1)
+ rb = x // ra
+
+ initial_regs = [0] * 32
+ initial_regs[1] = ra
+ initial_regs[2] = rb
self.add_case(prog, initial_regs)
def case_mulli(self):
for i in range(14):
ra_values.append(random.randint(0, (1 << 64) - 1))
- for ra in ra_values:
- for imm in imm_values:
- l = [f"mulli 0, 1, {imm}"]
- initial_regs = [0] * 32
- initial_regs[1] = ra
- # use "with" so as to close the files used
- with Program(l, bigendian) as prog:
+ for imm in imm_values:
+ l = [f"mulli 0, 1, {imm}"]
+ # use "with" so as to close the files used
+ with Program(l, bigendian) as prog:
+ for ra in ra_values:
+ initial_regs = [0] * 32
+ initial_regs[1] = ra
self.add_case(prog, initial_regs)
-# TODO add test case for these 3 operand cases (madd
-# needs to be implemented)
-# "maddhd","maddhdu","maddld"
-
- def case_ilang(self):
- pspec = MulPipeSpec(id_wid=2)
- alu = MulBasePipe(pspec)
- vl = rtlil.convert(alu, ports=alu.ports())
- with open("mul_pipeline.il", "w") as f:
- f.write(vl)
-
-
-class TestRunner(unittest.TestCase):
- def __init__(self, test_data):
- super().__init__("run_all")
- self.test_data = test_data
-
- def run_all(self):
- m = Module()
- comb = m.d.comb
- instruction = Signal(32)
-
- pdecode = create_pdecode()
-
- m.submodules.pdecode2 = pdecode2 = PowerDecode2(pdecode)
-
- pspec = MulPipeSpec(id_wid=2)
- m.submodules.alu = alu = MulBasePipe(pspec)
-
- comb += alu.p.data_i.ctx.op.eq_from_execute1(pdecode2.do)
- comb += alu.n.ready_i.eq(1)
- comb += pdecode2.dec.raw_opcode_in.eq(instruction)
- sim = Simulator(m)
-
- sim.add_clock(1e-6)
-
- def process():
- for test in self.test_data:
- print(test.name)
- program = test.program
- self.subTest(test.name)
- sim = ISA(pdecode2, test.regs, test.sprs, test.cr,
- test.mem, test.msr,
- bigendian=bigendian)
- gen = program.generate_instructions()
- instructions = list(zip(gen, program.assembly.splitlines()))
- yield Settle()
-
- index = sim.pc.CIA.value//4
- while index < len(instructions):
- ins, code = instructions[index]
-
- print("instruction: 0x{:X}".format(ins & 0xffffffff))
- print(code)
- if 'XER' in sim.spr:
- so = 1 if sim.spr['XER'][XER_bits['SO']] else 0
- ov = 1 if sim.spr['XER'][XER_bits['OV']] else 0
- ov32 = 1 if sim.spr['XER'][XER_bits['OV32']] else 0
- print("before: so/ov/32", so, ov, ov32)
-
- # ask the decoder to decode this binary data (endian'd)
- yield pdecode2.dec.bigendian.eq(bigendian) # little / big?
- yield instruction.eq(ins) # raw binary instr.
- yield Settle()
- fn_unit = yield pdecode2.e.do.fn_unit
- self.assertEqual(fn_unit, Function.MUL.value)
- yield from set_alu_inputs(alu, pdecode2, sim)
-
- # set valid for one cycle, propagate through pipeline...
- yield alu.p.valid_i.eq(1)
- yield
- yield alu.p.valid_i.eq(0)
-
- opname = code.split(' ')[0]
- yield from sim.call(opname)
- index = sim.pc.CIA.value//4
-
- # ...wait for valid to pop out the end
- vld = yield alu.n.valid_o
- while not vld:
- yield
- vld = yield alu.n.valid_o
- yield
-
- yield from self.check_alu_outputs(alu, pdecode2, sim, code)
- yield Settle()
-
- sim.add_sync_process(process)
- with sim.write_vcd("mul_simulator.vcd", "mul_simulator.gtkw",
- traces=[]):
- sim.run()
-
- def check_alu_outputs(self, alu, dec2, sim, code):
-
- rc = yield dec2.e.do.rc.data
- cridx_ok = yield dec2.e.write_cr.ok
- cridx = yield dec2.e.write_cr.data
-
- print("check extra output", repr(code), cridx_ok, cridx)
- if rc:
- self.assertEqual(cridx, 0, code)
-
- oe = yield dec2.e.do.oe.oe
- oe_ok = yield dec2.e.do.oe.ok
- if not oe or not oe_ok:
- # if OE not enabled, XER SO and OV must correspondingly be false
- so_ok = yield alu.n.data_o.xer_so.ok
- ov_ok = yield alu.n.data_o.xer_ov.ok
- self.assertEqual(so_ok, False, code)
- self.assertEqual(ov_ok, False, code)
-
- sim_o = {}
- res = {}
-
- yield from ALUHelpers.get_cr_a(res, alu, dec2)
- yield from ALUHelpers.get_xer_ov(res, alu, dec2)
- yield from ALUHelpers.get_int_o(res, alu, dec2)
- yield from ALUHelpers.get_xer_so(res, alu, dec2)
-
- yield from ALUHelpers.get_sim_int_o(sim_o, sim, dec2)
- yield from ALUHelpers.get_wr_sim_cr_a(sim_o, sim, dec2)
- yield from ALUHelpers.get_sim_xer_ov(sim_o, sim, dec2)
- yield from ALUHelpers.get_sim_xer_so(sim_o, sim, dec2)
-
- ALUHelpers.check_int_o(self, res, sim_o, code)
- ALUHelpers.check_xer_ov(self, res, sim_o, code)
- ALUHelpers.check_xer_so(self, res, sim_o, code)
- ALUHelpers.check_cr_a(self, res, sim_o, "CR%d %s" % (cridx, code))
+MUL_3_ARG_TEST_VALUES = [
+ 0x0,
+ 0x1,
+ 0x2,
+ 0xFFFF_FFFF_FFFF_FFFF,
+ 0xFFFF_FFFF_FFFF_FFFE,
+ 0x7FFF_FFFF_FFFF_FFFF,
+ 0x8000_0000_0000_0000,
+ 0x1234_5678_0000_0000,
+ 0x1234_5678_8000_0000,
+ 0x1234_5678_FFFF_FFFF,
+ 0x1234_5678_7FFF_FFFF,
+ 0xffffffff,
+ 0x7fffffff,
+ 0x80000000,
+ 0xfffffffe,
+ 0xfffffffd
+]
+
+
+class MulTestCases3Arg(TestAccumulatorBase):
+ def __init__(self, subtest_index):
+ self.subtest_index = subtest_index
+ super().__init__()
-if __name__ == "__main__":
- unittest.main(exit=False)
- suite = unittest.TestSuite()
- suite.addTest(TestRunner(MulTestCase().test_data))
+ def case_all(self):
+ instrs = ["maddhd", "maddhdu", "maddld"]
+
+ for instr in instrs:
+ l = [f"{instr} 1, 2, 3, 4"]
+ ra = MUL_3_ARG_TEST_VALUES[self.subtest_index]
+ for rb in MUL_3_ARG_TEST_VALUES:
+ for rc in MUL_3_ARG_TEST_VALUES:
+ initial_regs = [0] * 32
+ initial_regs[2] = ra
+ initial_regs[3] = rb
+ initial_regs[4] = rc
+ # use "with" so as to close the files used
+ with Program(l, bigendian) as prog:
+ self.add_case(prog, initial_regs)
+
+
+class TestPipeLong(MulTestHelper):
+ def test_mul_pipe_2_arg(self):
+ self.run_all(MulTestCases2Arg().test_data, "mul_pipe_caller_long_2_arg",
+ has_third_input=False)
+
+ def helper_3_arg(self, subtest_index):
+ self.run_all(MulTestCases3Arg(subtest_index).test_data,
+ f"mul_pipe_caller_long_3_arg_{subtest_index}",
+ has_third_input=True)
+
+ # split out as separate functions so some test
+ # runners can test them all in parallel
+ def test_mul_pipe_3_arg_0(self):
+ self.helper_3_arg(0)
+
+ def test_mul_pipe_3_arg_1(self):
+ self.helper_3_arg(1)
+
+ def test_mul_pipe_3_arg_2(self):
+ self.helper_3_arg(2)
+
+ def test_mul_pipe_3_arg_3(self):
+ self.helper_3_arg(3)
+
+ def test_mul_pipe_3_arg_4(self):
+ self.helper_3_arg(4)
- runner = unittest.TextTestRunner()
- runner.run(suite)
+ def test_mul_pipe_3_arg_5(self):
+ self.helper_3_arg(5)
+
+ def test_mul_pipe_3_arg_6(self):
+ self.helper_3_arg(6)
+
+ def test_mul_pipe_3_arg_7(self):
+ self.helper_3_arg(7)
+
+ def test_mul_pipe_3_arg_8(self):
+ self.helper_3_arg(8)
+
+ def test_mul_pipe_3_arg_9(self):
+ self.helper_3_arg(9)
+
+ def test_mul_pipe_3_arg_10(self):
+ self.helper_3_arg(10)
+
+ def test_mul_pipe_3_arg_11(self):
+ self.helper_3_arg(11)
+
+ def test_mul_pipe_3_arg_12(self):
+ self.helper_3_arg(12)
+
+ def test_mul_pipe_3_arg_13(self):
+ self.helper_3_arg(13)
+
+ def test_mul_pipe_3_arg_14(self):
+ self.helper_3_arg(14)
+
+ def test_mul_pipe_3_arg_15(self):
+ self.helper_3_arg(15)
+
+ def test_all_values_covered(self):
+ count = len(MUL_3_ARG_TEST_VALUES)
+ for i in range(count):
+ getattr(self, f"test_mul_pipe_3_arg_{i}")
+ with self.assertRaises(AttributeError):
+ getattr(self, f"test_mul_pipe_3_arg_{count}")
+
+
+if __name__ == "__main__":
+ unittest.main()
projects / soc.git / commitdiff