+"""simple core test
+
+related bugs:
+
+ * https://bugs.libre-soc.org/show_bug.cgi?id=363
+"""
from nmigen import Module, Signal, Cat
from nmigen.back.pysim import Simulator, Delay, Settle
from nmutil.formaltest import FHDLTestCase
from soc.decoder.isa.caller import special_sprs
from soc.decoder.power_decoder import create_pdecode
from soc.decoder.power_decoder2 import PowerDecode2
+from soc.decoder.selectable_int import SelectableInt
from soc.decoder.isa.all import ISA
-from soc.decoder.power_enums import Function, XER_bits
-
+from soc.decoder.power_enums import SPR, spr_dict, Function, XER_bits
+from soc.config.test.test_loadstore import TestMemPspec
+from soc.config.endian import bigendian
from soc.simple.core import NonProductionCore
-from soc.experiment.compalu_multi import find_ok # hack
+from soc.experiment.compalu_multi import find_ok # hack
+
+from soc.fu.compunits.test.test_compunit import (setup_test_memory,
+ check_sim_memory)
# test with ALU data and Logical data
-from soc.fu.alu.test.test_pipe_caller import TestCase, ALUTestCase, test_data
-#from soc.fu.logical.test.test_pipe_caller import LogicalTestCase, test_data
+from soc.fu.alu.test.test_pipe_caller import ALUTestCase
+from soc.fu.logical.test.test_pipe_caller import LogicalTestCase
+from soc.fu.shift_rot.test.test_pipe_caller import ShiftRotTestCase
+from soc.fu.cr.test.test_pipe_caller import CRTestCase
+from soc.fu.branch.test.test_pipe_caller import BranchTestCase
+from soc.fu.ldst.test.test_pipe_caller import LDSTTestCase
+from soc.regfile.util import spr_to_fast_reg
+
+
+def setup_regs(pdecode2, core, test):
+
+ # set up INT regfile, "direct" write (bypass rd/write ports)
+ intregs = core.regs.int
+ for i in range(32):
+ if intregs.unary:
+ yield intregs.regs[i].reg.eq(test.regs[i])
+ else:
+ yield intregs.memory._array[i].eq(test.regs[i])
+ yield Settle()
+ # set up CR regfile, "direct" write across all CRs
+ cr = test.cr
+ crregs = core.regs.cr
+ #cr = int('{:32b}'.format(cr)[::-1], 2)
+ print("setup cr reg", hex(cr))
+ for i in range(8):
+ #j = 7-i
+ cri = (cr >> (i*4)) & 0xf
+ #cri = int('{:04b}'.format(cri)[::-1], 2)
+ print("setup cr reg", hex(cri), i,
+ crregs.regs[i].reg.shape())
+ yield crregs.regs[i].reg.eq(cri)
+
+ # set up XER. "direct" write (bypass rd/write ports)
+ xregs = core.regs.xer
+ print("setup sprs", test.sprs)
+ xer = None
+ if 'XER' in test.sprs:
+ xer = test.sprs['XER']
+ if 1 in test.sprs:
+ xer = test.sprs[1]
+ if xer is not None:
+ if isinstance(xer, int):
+ xer = SelectableInt(xer, 64)
+ sobit = xer[XER_bits['SO']].value
+ yield xregs.regs[xregs.SO].reg.eq(sobit)
+ cabit = xer[XER_bits['CA']].value
+ ca32bit = xer[XER_bits['CA32']].value
+ yield xregs.regs[xregs.CA].reg.eq(Cat(cabit, ca32bit))
+ ovbit = xer[XER_bits['OV']].value
+ ov32bit = xer[XER_bits['OV32']].value
+ yield xregs.regs[xregs.OV].reg.eq(Cat(ovbit, ov32bit))
+ print("setting XER so %d ca %d ca32 %d ov %d ov32 %d" %
+ (sobit, cabit, ca32bit, ovbit, ov32bit))
+ else:
+ yield xregs.regs[xregs.SO].reg.eq(0)
+ yield xregs.regs[xregs.OV].reg.eq(0)
+ yield xregs.regs[xregs.CA].reg.eq(0)
+
+ # setting both fast and slow SPRs from test data
+
+ fregs = core.regs.fast
+ sregs = core.regs.spr
+ for sprname, val in test.sprs.items():
+ if isinstance(val, SelectableInt):
+ val = val.value
+ if isinstance(sprname, int):
+ sprname = spr_dict[sprname].SPR
+ if sprname == 'XER':
+ continue
+ fast = spr_to_fast_reg(sprname)
+ if fast is None:
+ # match behaviour of SPRMap in power_decoder2.py
+ for i, x in enumerate(SPR):
+ if sprname == x.name:
+ yield sregs[i].reg.eq(val)
+ print("setting slow SPR %d (%s) to %x" %
+ (i, sprname, val))
+ else:
+ yield fregs.regs[fast].reg.eq(val)
+ print("setting fast reg %d (%s) to %x" %
+ (fast, sprname, val))
+
+ # allow changes to settle before reporting on XER
+ yield Settle()
-def set_cu_input(cu, idx, data):
- rdop = cu.get_in_name(idx)
- yield cu.src_i[idx].eq(data)
- while True:
- rd_rel_o = yield cu.rd.rel[idx]
- print ("rd_rel %d wait HI" % idx, rd_rel_o, rdop, hex(data))
- if rd_rel_o:
- break
- yield
- yield cu.rd.go[idx].eq(1)
+ # XER
+ so = yield xregs.regs[xregs.SO].reg
+ ov = yield xregs.regs[xregs.OV].reg
+ ca = yield xregs.regs[xregs.CA].reg
+ oe = yield pdecode2.e.do.oe.oe
+ oe_ok = yield pdecode2.e.do.oe.oe_ok
+
+ print("before: so/ov-32/ca-32", so, bin(ov), bin(ca))
+ print("oe:", oe, oe_ok)
+
+
+def check_regs(dut, sim, core, test, code):
+ # int regs
+ intregs = []
+ for i in range(32):
+ if core.regs.int.unary:
+ rval = yield core.regs.int.regs[i].reg
+ else:
+ rval = yield core.regs.int.memory._array[i]
+ intregs.append(rval)
+ print("int regs", list(map(hex, intregs)))
+ for i in range(32):
+ simregval = sim.gpr[i].asint()
+ dut.assertEqual(simregval, intregs[i],
+ "int reg %d not equal %s" % (i, repr(code)))
+
+ # CRs
+ crregs = []
+ for i in range(8):
+ rval = yield core.regs.cr.regs[i].reg
+ crregs.append(rval)
+ print("cr regs", list(map(hex, crregs)))
+ for i in range(8):
+ rval = crregs[i]
+ cri = sim.crl[7-i].get_range().value
+ print("cr reg", i, hex(cri), i, hex(rval))
+ # XXX https://bugs.libre-soc.org/show_bug.cgi?id=363
+ dut.assertEqual(cri, rval,
+ "cr reg %d not equal %s" % (i, repr(code)))
+
+ # XER
+ xregs = core.regs.xer
+ so = yield xregs.regs[xregs.SO].reg
+ ov = yield xregs.regs[xregs.OV].reg
+ ca = yield xregs.regs[xregs.CA].reg
+
+ print("sim SO", sim.spr['XER'][XER_bits['SO']])
+ e_so = sim.spr['XER'][XER_bits['SO']].value
+ e_ov = sim.spr['XER'][XER_bits['OV']].value
+ e_ov32 = sim.spr['XER'][XER_bits['OV32']].value
+ e_ca = sim.spr['XER'][XER_bits['CA']].value
+ e_ca32 = sim.spr['XER'][XER_bits['CA32']].value
+
+ e_ov = e_ov | (e_ov32 << 1)
+ e_ca = e_ca | (e_ca32 << 1)
+
+ print("after: so/ov-32/ca-32", so, bin(ov), bin(ca))
+ dut.assertEqual(e_so, so, "so mismatch %s" % (repr(code)))
+ dut.assertEqual(e_ov, ov, "ov mismatch %s" % (repr(code)))
+ dut.assertEqual(e_ca, ca, "ca mismatch %s" % (repr(code)))
+
+
+def wait_for_busy_hi(cu):
while True:
- yield
- rd_rel_o = yield cu.rd.rel[idx]
- if rd_rel_o:
- break
- print ("rd_rel %d wait HI" % idx, rd_rel_o)
- yield
- yield cu.rd.go[idx].eq(0)
- yield cu.src_i[idx].eq(0)
-
-
-def get_cu_output(cu, idx, code):
- wrmask = yield cu.wrmask
- wrop = cu.get_out_name(idx)
- wrok = cu.get_out(idx)
- fname = find_ok(wrok.fields)
- wrok = yield getattr(wrok, fname)
- print ("wr_rel mask", repr(code), idx, wrop, bin(wrmask), fname, wrok)
- assert wrmask & (1<<idx), \
- "get_cu_output '%s': mask bit %d not set\n" \
- "write-operand '%s' Data.ok likely not set (%s)" \
- % (code, idx, wrop, hex(wrok))
- while True:
- wr_relall_o = yield cu.wr.rel
- wr_rel_o = yield cu.wr.rel[idx]
- print ("wr_rel %d wait" % idx, hex(wr_relall_o), wr_rel_o)
- if wr_rel_o:
+ busy_o = yield cu.busy_o
+ terminate_o = yield cu.core_terminate_o
+ if busy_o:
+ print("busy/terminate:", busy_o, terminate_o)
break
+ print("!busy", busy_o, terminate_o)
yield
- yield cu.wr.go[idx].eq(1)
- yield Settle()
- result = yield cu.dest[idx]
- yield
- yield cu.wr.go[idx].eq(0)
- print ("result", repr(code), idx, wrop, wrok, hex(result))
- return result
-
-
-def set_cu_inputs(cu, inp):
- for idx, data in inp.items():
- yield from set_cu_input(cu, idx, data)
def set_issue(core, dec2, sim):
yield core.issue_i.eq(1)
yield
yield core.issue_i.eq(0)
- while True:
- busy_o = yield core.busy_o
- if busy_o:
- break
- print("!busy",)
- yield
+ yield from wait_for_busy_hi(core)
def wait_for_busy_clear(cu):
while True:
busy_o = yield cu.busy_o
+ terminate_o = yield cu.core_terminate_o
if not busy_o:
+ print("busy/terminate:", busy_o, terminate_o)
break
print("busy",)
yield
-def get_cu_outputs(cu, code):
- res = {}
- for i in range(cu.n_dst):
- wr_rel_o = yield cu.wr.rel[i]
- if wr_rel_o:
- result = yield from get_cu_output(cu, i, code)
- wrop = cu.get_out_name(i)
- print ("output", i, wrop, hex(result))
- res[wrop] = result
- return res
-
-
-def get_inp_indexed(cu, inp):
- res = {}
- for i in range(cu.n_src):
- wrop = cu.get_in_name(i)
- if wrop in inp:
- res[i] = inp[wrop]
- return res
-
-
class TestRunner(FHDLTestCase):
def __init__(self, tst_data):
super().__init__("run_all")
instruction = Signal(32)
ivalid_i = Signal()
- m.submodules.core = core = NonProductionCore()
- pdecode = core.pdecode
+ pspec = TestMemPspec(ldst_ifacetype='testpi',
+ imem_ifacetype='',
+ addr_wid=48,
+ mask_wid=8,
+ reg_wid=64)
+
+ m.submodules.core = core = NonProductionCore(pspec)
pdecode2 = core.pdecode2
+ l0 = core.l0
- comb += pdecode2.dec.raw_opcode_in.eq(instruction)
+ comb += core.raw_opcode_i.eq(instruction)
comb += core.ivalid_i.eq(ivalid_i)
- sim = Simulator(m)
+ # temporary hack: says "go" immediately for both address gen and ST
+ ldst = core.fus.fus['ldst0']
+ m.d.comb += ldst.ad.go.eq(ldst.ad.rel) # link addr-go direct to rel
+ m.d.comb += ldst.st.go.eq(ldst.st.rel) # link store-go direct to rel
+
+ # nmigen Simulation
+ sim = Simulator(m)
sim.add_clock(1e-6)
def process():
print(test.name)
program = test.program
self.subTest(test.name)
- sim = ISA(pdecode2, test.regs, test.sprs, 0)
+ 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()))
- # set up INT regfile, "direct" write (bypass rd/write ports)
- for i in range(32):
- yield core.regs.int.regs[i].reg.eq(test.regs[i])
-
- # set up XER. "direct" write (bypass rd/write ports)
- xregs = core.regs.xer
- print ("sprs", test.sprs)
- if special_sprs['XER'] in test.sprs:
- xer = test.sprs[special_sprs['XER']]
- sobit = xer[XER_bits['SO']].asint()
- yield xregs.regs[xregs.SO].reg.eq(sobit)
- cabit = xer[XER_bits['CA']].asint()
- ca32bit = xer[XER_bits['CA32']].asint()
- yield xregs.regs[xregs.CA].reg.eq(Cat(cabit, ca32bit))
- ovbit = xer[XER_bits['OV']].asint()
- ov32bit = xer[XER_bits['OV32']].asint()
- yield xregs.regs[xregs.OV].reg.eq(Cat(ovbit, ov32bit))
- else:
- yield xregs.regs[xregs.SO].reg.eq(0)
- yield xregs.regs[xregs.OV].reg.eq(0)
- yield xregs.regs[xregs.CA].reg.eq(0)
+ yield from setup_test_memory(l0, sim)
+ yield from setup_regs(core, test)
index = sim.pc.CIA.value//4
while index < len(instructions):
ins, code = instructions[index]
- print("0x{:X}".format(ins & 0xffffffff))
+ print("instruction: 0x{:X}".format(ins & 0xffffffff))
print(code)
# ask the decoder to decode this binary data (endian'd)
- yield pdecode2.dec.bigendian.eq(0) # little / big?
+ yield core.bigendian_i.eq(bigendian) # little / big?
yield instruction.eq(ins) # raw binary instr.
yield ivalid_i.eq(1)
yield Settle()
- #fn_unit = yield pdecode2.e.fn_unit
+ # fn_unit = yield pdecode2.e.fn_unit
#fuval = self.funit.value
#self.assertEqual(fn_unit & fuval, fuval)
yield ivalid_i.eq(0)
yield
- print ("sim", code)
+ print("sim", code)
# call simulated operation
opname = code.split(' ')[0]
yield from sim.call(opname)
index = sim.pc.CIA.value//4
- # int regs
- intregs = []
- for i in range(32):
- rval = yield core.regs.int.regs[i].reg
- intregs.append(rval)
- print ("int regs", list(map(hex, intregs)))
- for i in range(32):
- simregval = sim.gpr[i].asint()
- self.assertEqual(simregval, intregs[i],
- "int reg %d not equal %s" % (i, repr(code)))
+ # register check
+ yield from check_regs(self, sim, core, test, code)
+
+ # Memory check
+ yield from check_sim_memory(self, l0, sim, code)
sim.add_sync_process(process)
with sim.write_vcd("core_simulator.vcd", "core_simulator.gtkw",
- traces=[]):
+ traces=[]):
sim.run()
if __name__ == "__main__":
unittest.main(exit=False)
suite = unittest.TestSuite()
- suite.addTest(TestRunner(test_data))
+ suite.addTest(TestRunner(LDSTTestCase.test_data))
+ suite.addTest(TestRunner(CRTestCase.test_data))
+ suite.addTest(TestRunner(ShiftRotTestCase.test_data))
+ suite.addTest(TestRunner(LogicalTestCase.test_data))
+ suite.addTest(TestRunner(ALUTestCase.test_data))
+ suite.addTest(TestRunner(BranchTestCase.test_data))
runner = unittest.TextTestRunner()
runner.run(suite)
-
projects / soc.git / blobdiff