1 """simple core test, runs instructions from a TestMemory
5 * https://bugs.libre-soc.org/show_bug.cgi?id=363
7 from nmigen
import Module
, Signal
, Cat
8 from nmigen
.back
.pysim
import Simulator
, Delay
, Settle
9 from nmutil
.formaltest
import FHDLTestCase
10 from nmigen
.cli
import rtlil
12 from soc
.decoder
.isa
.caller
import special_sprs
13 from soc
.decoder
.isa
.all
import ISA
14 from soc
.decoder
.power_enums
import Function
, XER_bits
17 from soc
.simple
.issuer
import TestIssuer
18 from soc
.experiment
.compalu_multi
import find_ok
# hack
20 from soc
.config
.test
.test_loadstore
import TestMemPspec
21 from soc
.simple
.test
.test_core
import (setup_regs
, check_regs
,
24 from soc
.fu
.compunits
.test
.test_compunit
import (setup_test_memory
,
27 # test with ALU data and Logical data
28 from soc
.fu
.alu
.test
.test_pipe_caller
import ALUTestCase
29 from soc
.fu
.logical
.test
.test_pipe_caller
import LogicalTestCase
30 from soc
.fu
.shift_rot
.test
.test_pipe_caller
import ShiftRotTestCase
31 from soc
.fu
.cr
.test
.test_pipe_caller
import CRTestCase
32 from soc
.fu
.branch
.test
.test_pipe_caller
import BranchTestCase
33 from soc
.fu
.spr
.test
.test_pipe_caller
import SPRTestCase
34 from soc
.fu
.ldst
.test
.test_pipe_caller
import LDSTTestCase
35 from soc
.simulator
.test_sim
import GeneralTestCases
38 def setup_i_memory(imem
, startaddr
, instructions
):
40 print ("insn before, init mem", mem
.depth
, mem
.width
, mem
)
41 for i
in range(mem
.depth
):
42 yield mem
._array
[i
].eq(0)
44 startaddr
//= 4 # instructions are 32-bit
46 for insn
, code
in instructions
:
47 msbs
= (startaddr
>>1) & mask
48 val
= yield mem
._array
[msbs
]
49 print ("before set", hex(startaddr
), hex(msbs
), hex(val
))
50 lsb
= 1 if (startaddr
& 1) else 0
51 val
= (val |
(insn
<< (lsb
*32))) & mask
52 yield mem
._array
[msbs
].eq(val
)
54 print ("after set", hex(startaddr
), hex(msbs
), hex(val
))
55 print ("instr: %06x 0x%x %s %08x" % (4*startaddr
, insn
, code
, val
))
57 startaddr
= startaddr
& mask
60 class TestRunner(FHDLTestCase
):
61 def __init__(self
, tst_data
):
62 super().__init
__("run_all")
63 self
.test_data
= tst_data
71 pspec
= TestMemPspec(ldst_ifacetype
='test_bare_wb',
72 imem_ifacetype
='test_bare_wb',
76 m
.submodules
.issuer
= issuer
= TestIssuer(pspec
)
77 imem
= issuer
.imem
._get
_memory
()
79 pdecode2
= core
.pdecode2
82 comb
+= issuer
.pc_i
.data
.eq(pc_i
)
83 comb
+= issuer
.go_insn_i
.eq(go_insn_i
)
91 for test
in self
.test_data
:
93 program
= test
.program
94 self
.subTest(test
.name
)
95 print ("regs", test
.regs
)
96 print ("sprs", test
.sprs
)
98 print ("mem", test
.mem
)
99 print ("msr", test
.msr
)
100 print ("assem", program
.assembly
)
101 gen
= list(program
.generate_instructions())
102 insncode
= program
.assembly
.splitlines()
103 instructions
= list(zip(gen
, insncode
))
104 sim
= ISA(pdecode2
, test
.regs
, test
.sprs
, test
.cr
, test
.mem
,
106 initial_insns
=gen
, respect_pc
=True,
107 disassembly
=insncode
)
109 pc
= 0 # start address
111 yield from setup_i_memory(imem
, pc
, instructions
)
112 yield from setup_test_memory(l0
, sim
)
113 yield from setup_regs(core
, test
)
116 yield issuer
.pc_i
.ok
.eq(1)
118 index
= sim
.pc
.CIA
.value
//4
119 while index
< len(instructions
):
120 ins
, code
= instructions
[index
]
122 print("instruction: 0x{:X}".format(ins
& 0xffffffff))
125 # start the instruction
126 yield go_insn_i
.eq(1)
128 yield issuer
.pc_i
.ok
.eq(0) # don't change PC from now on
129 yield go_insn_i
.eq(0) # and don't issue a new insn
131 # wait until executed
132 yield from wait_for_busy_hi(core
)
133 yield from wait_for_busy_clear(core
)
136 # call simulated operation
137 opname
= code
.split(' ')[0]
138 yield from sim
.call(opname
)
140 index
= sim
.pc
.CIA
.value
//4
143 yield from check_regs(self
, sim
, core
, test
, code
)
146 yield from check_sim_memory(self
, l0
, sim
, code
)
148 sim
.add_sync_process(process
)
149 with sim
.write_vcd("issuer_simulator.vcd",
154 if __name__
== "__main__":
155 unittest
.main(exit
=False)
156 suite
= unittest
.TestSuite()
157 suite
.addTest(TestRunner(GeneralTestCases
.test_data
))
158 suite
.addTest(TestRunner(LDSTTestCase
.test_data
))
159 suite
.addTest(TestRunner(CRTestCase
.test_data
))
160 suite
.addTest(TestRunner(ShiftRotTestCase
.test_data
))
161 suite
.addTest(TestRunner(LogicalTestCase
.test_data
))
162 suite
.addTest(TestRunner(ALUTestCase
.test_data
))
163 suite
.addTest(TestRunner(BranchTestCase
.test_data
))
164 #suite.addTest(TestRunner(SPRTestCase.test_data))
166 runner
= unittest
.TextTestRunner()