Tweak parameters for Minerva verification tasks
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README.md
20
README.md
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@ -27,17 +27,31 @@ This should run the tests (cache, multiplier, divider) provided by Minerva itsel
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$ python -m rvfi.cores.minerva.verify
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$ python -m rvfi.cores.minerva.verify
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```
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```
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This should run in the order of a few minutes.
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This should run in the order of a few hours.
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### Progress
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- [ ] Instruction Checks (mostly passing)
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- [ ] JAL failing at line 202
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- [ ] LB, LH, LW, LBU, LHU, SB, SH, SW: Parser error - invalid slice
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- [ ] SRL failing at line 201
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- [x] PC forward checks
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- [x] PC backward checks
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- [x] Register checks
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- [x] Causal checks
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- [ ] Liveness checks
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- [ ] Uniqueness checks
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## Scope
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## Scope
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The RV32I, RV32M, RV64I and RV64M ISAs are currently implemented but yet to be fully tested. Support for compressed instructions may be added in the future as time permits.
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The RV32I, RV32M, RV64I and RV64M ISAs are currently implemented but only RV32IM are being tested by integrating with the Minerva core.
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## Known Issues
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## Known Issues
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- ~~21/08/2020: Verification passes unconditionally, even in the presence of obvious bugs. This is due to the `rvfi.valid` signal from the CPU being held at constant 0. Suitable instruction and data buses as well as interrupt signals have not been wired to Minerva which is likely preventing the core and verification from functioning properly~~
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- ~~21/08/2020: Verification passes unconditionally, even in the presence of obvious bugs. This is due to the `rvfi.valid` signal from the CPU being held at constant 0. Suitable instruction and data buses as well as interrupt signals have not been wired to Minerva which is likely preventing the core and verification from functioning properly~~
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- ~~25/08/2020: Interrupts have been hardwired to zero and instruction/data buses attached to the Minerva core; however, running the verification quickly exhausts available memory on a machine with 32G RAM. Possible culprit: huge number of `Assume` statements on memory values~~
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- ~~25/08/2020: Interrupts have been hardwired to zero and instruction/data buses attached to the Minerva core; however, running the verification quickly exhausts available memory on a machine with 32G RAM. Possible culprit: huge number of `Assume` statements on memory values~~
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- 07/09/2020: Instruction checks fail at line 201 asserting the value of `rd_wdata`. At least we now have a proper failure instead of an unconditional pass or an out of memory issue. Whether the translated specs themselves are in error is under investigation.
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- ~~07/09/2020: Instruction checks fail at line 201 asserting the value of `rd_wdata`. At least we now have a proper failure instead of an unconditional pass or an out of memory issue. Whether the translated specs themselves are in error is under investigation.~~
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- 15/09/2020: Apart from the occasional failed assertion in specific verification tasks (likely due to bugs in translation), all of the memory-related instruction checks fail with a "parser error: invalid slice" preventing the assertions from ever running. The root cause of this issue is yet to be determined.
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## License
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## License
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@ -1,47 +0,0 @@
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Failing instructions:
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- LUI (L200, 201, 202)
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- AUIPC (L202)
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- JAL (L202)
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- JALR (L202)
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- BEQ (L202)
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- BNE (L202)
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- BLT (L202)
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- BGE (L202)
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- BLTU (L202)
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- BGEU (L202)
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- LB (L202)
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- LH (L202, 205, 215, 217)
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- LW (L202, 205, 217)
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- LBU (L202)
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- LHU (L202, 205, 215, 217)
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- SB (L202)
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- SH (L202, 205, 209, 212, 217)
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- SW (L202, 205, 217)
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- ADDI (L202)
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- SLTI (L202)
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- SLTIU (L202)
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- XORI (L200, 202)
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- ORI (L202)
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- ANDI (L202)
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- SLLI (L200, 202)
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- SRLI (L202)
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- SRAI (L200, 202)
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- ADD (L202)
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- SUB (L202)
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- SLL (L202)
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- SLT (L200, 202)
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- SLTU (L200, 202)
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- XOR (L200, 202)
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- SRL (L201)
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- SRA (L202)
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- OR (L202)
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- AND (L202)
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- MUL (L202, 217)
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- MULH (L202, 217)
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- MULHSU (L202, 217)
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- MULHU (L202, 217)
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- DIV (L202, 217)
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- DIVU (L202, 217)
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- REM (L202, 217)
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- REMU (L202, 217)
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@ -64,22 +64,36 @@ class InsnSpec(Elaboratable):
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def elaborate(self, platform):
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def elaborate(self, platform):
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m = Module()
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m = Module()
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m.submodules.cpu = cpu = Minerva(with_rvfi=True)
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m.submodules.cpu = cpu = Minerva(
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with_rvfi=True,
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with_muldiv=True,
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with_icache=True,
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icache_nways=2,
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icache_nlines=2,
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icache_nwords=4,
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icache_base=0x1000,
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icache_limit=0x4000,
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with_dcache=True,
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dcache_nways=2,
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dcache_nlines=2,
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dcache_nwords=4,
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dcache_base=0x1000,
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dcache_limit=0x4000)
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m.submodules.insn_spec = insn_spec = InsnCheck(
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m.submodules.insn_spec = insn_spec = InsnCheck(
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params=RISCVFormalParameters(32, 32, False, False, False, True),
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params=RISCVFormalParameters(32, 32, False, False, True, True),
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insn_model=self.insn_model,
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insn_model=self.insn_model,
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rvformal_addr_valid=lambda x:Const(1))
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rvformal_addr_valid=lambda x:Const(1))
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# Wire input ports to Minerva core
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# Wire input ports to Minerva core
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m.d.comb += cpu.external_interrupt.eq(AnySeq(32))
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m.d.comb += cpu.external_interrupt.eq(0)
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m.d.comb += cpu.timer_interrupt.eq(AnySeq(1))
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m.d.comb += cpu.timer_interrupt.eq(0)
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m.d.comb += cpu.software_interrupt.eq(AnySeq(1))
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m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
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m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
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m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
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m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
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m.d.comb += cpu.ibus.err.eq(AnySeq(1))
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m.d.comb += cpu.ibus.err.eq(0)
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m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
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m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
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m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
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m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
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m.d.comb += cpu.dbus.err.eq(AnySeq(1))
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m.d.comb += cpu.dbus.err.eq(0)
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m.d.comb += insn_spec.reset.eq(AnySeq(1))
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m.d.comb += insn_spec.reset.eq(AnySeq(1))
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m.d.comb += insn_spec.check.eq(AnySeq(1))
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m.d.comb += insn_spec.check.eq(AnySeq(1))
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@ -111,160 +125,174 @@ class InsnSpec(Elaboratable):
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class InsnTestCase(FHDLTestCase):
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class InsnTestCase(FHDLTestCase):
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def verify(self):
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def verify(self):
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print("Verifying LUI instruction ...")
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print("Verifying LUI instruction ...")
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self.assertFormal(InsnSpec(InsnLui), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnLui), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnLui), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnLui), mode="bmc", depth=20)
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print("Verifying AUIPC instruction ...")
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print("Verifying AUIPC instruction ...")
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self.assertFormal(InsnSpec(InsnAuipc), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnAuipc), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnAuipc), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnAuipc), mode="bmc", depth=20)
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print("Verifying JAL instruction ...")
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print("Verifying JAL instruction ...")
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self.assertFormal(InsnSpec(InsnJal), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnJal), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnJal), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnJal), mode="bmc", depth=20)
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print("Verifying JALR instruction ...")
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print("Verifying JALR instruction ...")
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self.assertFormal(InsnSpec(InsnJalr), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnJalr), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnJalr), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnJalr), mode="bmc", depth=20)
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print("Verifying BEQ instruction ...")
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print("Verifying BEQ instruction ...")
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self.assertFormal(InsnSpec(InsnBeq), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnBeq), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnBeq), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnBeq), mode="bmc", depth=20)
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print("Verifying BNE instruction ...")
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print("Verifying BNE instruction ...")
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self.assertFormal(InsnSpec(InsnBne), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnBne), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnBne), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnBne), mode="bmc", depth=20)
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print("Verifying BLT instruction ...")
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print("Verifying BLT instruction ...")
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self.assertFormal(InsnSpec(InsnBlt), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnBlt), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnBlt), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnBlt), mode="bmc", depth=20)
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print("Verifying BGE instruction ...")
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print("Verifying BGE instruction ...")
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self.assertFormal(InsnSpec(InsnBge), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnBge), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnBge), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnBge), mode="bmc", depth=20)
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print("Verifying BLTU instruction ...")
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print("Verifying BLTU instruction ...")
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self.assertFormal(InsnSpec(InsnBltu), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnBltu), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnBltu), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnBltu), mode="bmc", depth=20)
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print("Verifying BGEU instruction ...")
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print("Verifying BGEU instruction ...")
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self.assertFormal(InsnSpec(InsnBgeu), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnBgeu), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnBgeu), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnBgeu), mode="bmc", depth=20)
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print("Verifying LB instruction ...")
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print("Verifying LB instruction ...")
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self.assertFormal(InsnSpec(InsnLb), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnLb), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnLb), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnLb), mode="bmc", depth=20)
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print("Verifying LH instruction ...")
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print("Verifying LH instruction ...")
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self.assertFormal(InsnSpec(InsnLh), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnLh), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnLh), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnLh), mode="bmc", depth=20)
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print("Verifying LW instruction ...")
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print("Verifying LW instruction ...")
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self.assertFormal(InsnSpec(InsnLw), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnLw), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnLw), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnLw), mode="bmc", depth=20)
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print("Verifying LBU instruction ...")
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print("Verifying LBU instruction ...")
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self.assertFormal(InsnSpec(InsnLbu), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnLbu), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnLbu), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnLbu), mode="bmc", depth=20)
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print("Verifying LHU instruction ...")
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print("Verifying LHU instruction ...")
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self.assertFormal(InsnSpec(InsnLhu), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnLhu), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnLhu), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnLhu), mode="bmc", depth=20)
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print("Verifying SB instruction ...")
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print("Verifying SB instruction ...")
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self.assertFormal(InsnSpec(InsnSb), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSb), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSb), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSb), mode="bmc", depth=20)
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print("Verifying SH instruction ...")
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print("Verifying SH instruction ...")
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self.assertFormal(InsnSpec(InsnSh), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSh), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSh), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSh), mode="bmc", depth=20)
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print("Verifying SW instruction ...")
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print("Verifying SW instruction ...")
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self.assertFormal(InsnSpec(InsnSw), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSw), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSw), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSw), mode="bmc", depth=20)
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print("Verifying ADDI instruction ...")
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print("Verifying ADDI instruction ...")
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self.assertFormal(InsnSpec(InsnAddi), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnAddi), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnAddi), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnAddi), mode="bmc", depth=20)
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print("Verifying SLTI instruction ...")
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print("Verifying SLTI instruction ...")
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self.assertFormal(InsnSpec(InsnSlti), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSlti), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSlti), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSlti), mode="bmc", depth=20)
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print("Verifying SLTIU instruction ...")
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print("Verifying SLTIU instruction ...")
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self.assertFormal(InsnSpec(InsnSltiu), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSltiu), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSltiu), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSltiu), mode="bmc", depth=20)
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print("Verifying XORI instruction ...")
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print("Verifying XORI instruction ...")
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self.assertFormal(InsnSpec(InsnXori), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnXori), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnXori), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnXori), mode="bmc", depth=20)
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print("Verifying ORI instruction ...")
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print("Verifying ORI instruction ...")
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self.assertFormal(InsnSpec(InsnOri), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnOri), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnOri), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnOri), mode="bmc", depth=20)
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print("Verifying ANDI instruction ...")
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print("Verifying ANDI instruction ...")
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self.assertFormal(InsnSpec(InsnAndi), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnAndi), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnAndi), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnAndi), mode="bmc", depth=20)
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print("Verifying SLLI instruction ...")
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print("Verifying SLLI instruction ...")
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self.assertFormal(InsnSpec(InsnSlli), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSlli), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSlli), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSlli), mode="bmc", depth=20)
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print("Verifying SRLI instruction ...")
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print("Verifying SRLI instruction ...")
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self.assertFormal(InsnSpec(InsnSrli), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSrli), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSrli), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSrli), mode="bmc", depth=20)
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print("Verifying SRAI instruction ...")
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print("Verifying SRAI instruction ...")
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self.assertFormal(InsnSpec(InsnSrai), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSrai), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSrai), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSrai), mode="bmc", depth=20)
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print("Verifying ADD instruction ...")
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print("Verifying ADD instruction ...")
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self.assertFormal(InsnSpec(InsnAdd), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnAdd), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnAdd), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnAdd), mode="bmc", depth=20)
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print("Verifying SUB instruction ...")
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print("Verifying SUB instruction ...")
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self.assertFormal(InsnSpec(InsnSub), mode="cover", depth=40)
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self.assertFormal(InsnSpec(InsnSub), mode="cover", depth=20)
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self.assertFormal(InsnSpec(InsnSub), mode="bmc", depth=40)
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self.assertFormal(InsnSpec(InsnSub), mode="bmc", depth=20)
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print("Verifying SLL instruction ...")
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print("Verifying SLL instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnSll), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnSll), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnSll), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnSll), mode="bmc", depth=20)
|
||||||
print("Verifying SLT instruction ...")
|
print("Verifying SLT instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnSlt), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnSlt), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnSlt), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnSlt), mode="bmc", depth=20)
|
||||||
print("Verifying SLTU instruction ...")
|
print("Verifying SLTU instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnSltu), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnSltu), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnSltu), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnSltu), mode="bmc", depth=20)
|
||||||
print("Verifying XOR instruction ...")
|
print("Verifying XOR instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnXor), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnXor), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnXor), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnXor), mode="bmc", depth=20)
|
||||||
print("Verifying SRL instruction ...")
|
print("Verifying SRL instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnSrl), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnSrl), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnSrl), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnSrl), mode="bmc", depth=20)
|
||||||
print("Verifying SRA instruction ...")
|
print("Verifying SRA instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnSra), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnSra), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnSra), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnSra), mode="bmc", depth=20)
|
||||||
print("Verifying OR instruction ...")
|
print("Verifying OR instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnOr), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnOr), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnOr), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnOr), mode="bmc", depth=20)
|
||||||
print("Verifying AND instruction ...")
|
print("Verifying AND instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnAnd), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnAnd), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnAnd), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnAnd), mode="bmc", depth=20)
|
||||||
print("Verifying MUL instruction ...")
|
print("Verifying MUL instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnMul), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnMul), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnMul), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnMul), mode="bmc", depth=20)
|
||||||
print("Verifying MULH instruction ...")
|
print("Verifying MULH instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnMulh), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnMulh), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnMulh), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnMulh), mode="bmc", depth=20)
|
||||||
print("Verifying MULHSU instruction ...")
|
print("Verifying MULHSU instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnMulhsu), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnMulhsu), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnMulhsu), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnMulhsu), mode="bmc", depth=20)
|
||||||
print("Verifying MULHU instruction ...")
|
print("Verifying MULHU instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnMulhu), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnMulhu), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnMulhu), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnMulhu), mode="bmc", depth=20)
|
||||||
print("Verifying DIV instruction ...")
|
print("Verifying DIV instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnDiv), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnDiv), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnDiv), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnDiv), mode="bmc", depth=20)
|
||||||
print("Verifying DIVU instruction ...")
|
print("Verifying DIVU instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnDivu), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnDivu), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnDivu), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnDivu), mode="bmc", depth=20)
|
||||||
print("Verifying REM instruction ...")
|
print("Verifying REM instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnRem), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnRem), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnRem), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnRem), mode="bmc", depth=20)
|
||||||
print("Verifying REMU instruction ...")
|
print("Verifying REMU instruction ...")
|
||||||
self.assertFormal(InsnSpec(InsnRemu), mode="cover", depth=40)
|
self.assertFormal(InsnSpec(InsnRemu), mode="cover", depth=20)
|
||||||
self.assertFormal(InsnSpec(InsnRemu), mode="bmc", depth=40)
|
self.assertFormal(InsnSpec(InsnRemu), mode="bmc", depth=20)
|
||||||
|
|
||||||
class PcFwdSpec(Elaboratable):
|
class PcFwdSpec(Elaboratable):
|
||||||
def elaborate(self, platform):
|
def elaborate(self, platform):
|
||||||
m = Module()
|
m = Module()
|
||||||
|
|
||||||
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
|
m.submodules.cpu = cpu = Minerva(
|
||||||
|
with_rvfi=True,
|
||||||
|
with_muldiv=True,
|
||||||
|
with_icache=True,
|
||||||
|
icache_nways=2,
|
||||||
|
icache_nlines=2,
|
||||||
|
icache_nwords=4,
|
||||||
|
icache_base=0x1000,
|
||||||
|
icache_limit=0x4000,
|
||||||
|
with_dcache=True,
|
||||||
|
dcache_nways=2,
|
||||||
|
dcache_nlines=2,
|
||||||
|
dcache_nwords=4,
|
||||||
|
dcache_base=0x1000,
|
||||||
|
dcache_limit=0x4000)
|
||||||
m.submodules.pc_fwd_spec = pc_fwd_spec = PcFwdCheck(
|
m.submodules.pc_fwd_spec = pc_fwd_spec = PcFwdCheck(
|
||||||
params=RISCVFormalParameters(32, 32, False, False, False, True),
|
params=RISCVFormalParameters(32, 32, False, False, True, True),
|
||||||
rvformal_addr_valid=lambda x:Const(1))
|
rvformal_addr_valid=lambda x:Const(1))
|
||||||
|
|
||||||
# Wire input ports to Minerva core
|
# Wire input ports to Minerva core
|
||||||
m.d.comb += cpu.external_interrupt.eq(AnySeq(32))
|
m.d.comb += cpu.external_interrupt.eq(0)
|
||||||
m.d.comb += cpu.timer_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.timer_interrupt.eq(0)
|
||||||
m.d.comb += cpu.software_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.software_interrupt.eq(0)
|
||||||
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.ibus.err.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.err.eq(0)
|
||||||
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.dbus.err.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.err.eq(0)
|
||||||
|
|
||||||
m.d.comb += pc_fwd_spec.reset.eq(AnySeq(1))
|
m.d.comb += pc_fwd_spec.reset.eq(AnySeq(1))
|
||||||
m.d.comb += pc_fwd_spec.check.eq(AnySeq(1))
|
m.d.comb += pc_fwd_spec.check.eq(AnySeq(1))
|
||||||
|
|
@ -278,28 +306,42 @@ class PcFwdSpec(Elaboratable):
|
||||||
|
|
||||||
class PcFwdTestCase(FHDLTestCase):
|
class PcFwdTestCase(FHDLTestCase):
|
||||||
def verify(self):
|
def verify(self):
|
||||||
self.assertFormal(PcFwdSpec(), mode="cover", depth=40)
|
self.assertFormal(PcFwdSpec(), mode="cover", depth=20)
|
||||||
self.assertFormal(PcFwdSpec(), mode="bmc", depth=40)
|
self.assertFormal(PcFwdSpec(), mode="bmc", depth=20)
|
||||||
|
|
||||||
class PcBwdSpec(Elaboratable):
|
class PcBwdSpec(Elaboratable):
|
||||||
def elaborate(self, platform):
|
def elaborate(self, platform):
|
||||||
m = Module()
|
m = Module()
|
||||||
|
|
||||||
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
|
m.submodules.cpu = cpu = Minerva(
|
||||||
|
with_rvfi=True,
|
||||||
|
with_muldiv=True,
|
||||||
|
with_icache=True,
|
||||||
|
icache_nways=2,
|
||||||
|
icache_nlines=2,
|
||||||
|
icache_nwords=4,
|
||||||
|
icache_base=0x1000,
|
||||||
|
icache_limit=0x4000,
|
||||||
|
with_dcache=True,
|
||||||
|
dcache_nways=2,
|
||||||
|
dcache_nlines=2,
|
||||||
|
dcache_nwords=4,
|
||||||
|
dcache_base=0x1000,
|
||||||
|
dcache_limit=0x4000)
|
||||||
m.submodules.pc_bwd_spec = pc_bwd_spec = PcBwdCheck(
|
m.submodules.pc_bwd_spec = pc_bwd_spec = PcBwdCheck(
|
||||||
params=RISCVFormalParameters(32, 32, False, False, False, True),
|
params=RISCVFormalParameters(32, 32, False, False, True, True),
|
||||||
rvformal_addr_valid=lambda x:Const(1))
|
rvformal_addr_valid=lambda x:Const(1))
|
||||||
|
|
||||||
# Wire input ports to Minerva core
|
# Wire input ports to Minerva core
|
||||||
m.d.comb += cpu.external_interrupt.eq(AnySeq(32))
|
m.d.comb += cpu.external_interrupt.eq(0)
|
||||||
m.d.comb += cpu.timer_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.timer_interrupt.eq(0)
|
||||||
m.d.comb += cpu.software_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.software_interrupt.eq(0)
|
||||||
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.ibus.err.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.err.eq(0)
|
||||||
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.dbus.err.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.err.eq(0)
|
||||||
|
|
||||||
m.d.comb += pc_bwd_spec.reset.eq(AnySeq(1))
|
m.d.comb += pc_bwd_spec.reset.eq(AnySeq(1))
|
||||||
m.d.comb += pc_bwd_spec.check.eq(AnySeq(1))
|
m.d.comb += pc_bwd_spec.check.eq(AnySeq(1))
|
||||||
|
|
@ -313,26 +355,40 @@ class PcBwdSpec(Elaboratable):
|
||||||
|
|
||||||
class PcBwdTestCase(FHDLTestCase):
|
class PcBwdTestCase(FHDLTestCase):
|
||||||
def verify(self):
|
def verify(self):
|
||||||
self.assertFormal(PcBwdSpec(), mode="cover", depth=40)
|
self.assertFormal(PcBwdSpec(), mode="cover", depth=20)
|
||||||
self.assertFormal(PcBwdSpec(), mode="bmc", depth=40)
|
self.assertFormal(PcBwdSpec(), mode="bmc", depth=20)
|
||||||
|
|
||||||
class RegSpec(Elaboratable):
|
class RegSpec(Elaboratable):
|
||||||
def elaborate(self, platform):
|
def elaborate(self, platform):
|
||||||
m = Module()
|
m = Module()
|
||||||
|
|
||||||
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
|
m.submodules.cpu = cpu = Minerva(
|
||||||
m.submodules.reg_spec = reg_spec = RegCheck(params=RISCVFormalParameters(32, 32, False, False, False, True))
|
with_rvfi=True,
|
||||||
|
with_muldiv=True,
|
||||||
|
with_icache=True,
|
||||||
|
icache_nways=2,
|
||||||
|
icache_nlines=2,
|
||||||
|
icache_nwords=4,
|
||||||
|
icache_base=0x1000,
|
||||||
|
icache_limit=0x4000,
|
||||||
|
with_dcache=True,
|
||||||
|
dcache_nways=2,
|
||||||
|
dcache_nlines=2,
|
||||||
|
dcache_nwords=4,
|
||||||
|
dcache_base=0x1000,
|
||||||
|
dcache_limit=0x4000)
|
||||||
|
m.submodules.reg_spec = reg_spec = RegCheck(params=RISCVFormalParameters(32, 32, False, False, True, True))
|
||||||
|
|
||||||
# Wire input ports to Minerva core
|
# Wire input ports to Minerva core
|
||||||
m.d.comb += cpu.external_interrupt.eq(AnySeq(32))
|
m.d.comb += cpu.external_interrupt.eq(0)
|
||||||
m.d.comb += cpu.timer_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.timer_interrupt.eq(0)
|
||||||
m.d.comb += cpu.software_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.software_interrupt.eq(0)
|
||||||
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.ibus.err.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.err.eq(0)
|
||||||
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.dbus.err.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.err.eq(0)
|
||||||
|
|
||||||
m.d.comb += reg_spec.reset.eq(AnySeq(1))
|
m.d.comb += reg_spec.reset.eq(AnySeq(1))
|
||||||
m.d.comb += reg_spec.check.eq(AnySeq(1))
|
m.d.comb += reg_spec.check.eq(AnySeq(1))
|
||||||
|
|
@ -350,26 +406,40 @@ class RegSpec(Elaboratable):
|
||||||
|
|
||||||
class RegTestCase(FHDLTestCase):
|
class RegTestCase(FHDLTestCase):
|
||||||
def verify(self):
|
def verify(self):
|
||||||
self.assertFormal(RegSpec(), mode="cover", depth=40)
|
self.assertFormal(RegSpec(), mode="cover", depth=10)
|
||||||
self.assertFormal(RegSpec(), mode="bmc", depth=40)
|
self.assertFormal(RegSpec(), mode="bmc", depth=10)
|
||||||
|
|
||||||
class CausalSpec(Elaboratable):
|
class CausalSpec(Elaboratable):
|
||||||
def elaborate(self, platform):
|
def elaborate(self, platform):
|
||||||
m = Module()
|
m = Module()
|
||||||
|
|
||||||
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
|
m.submodules.cpu = cpu = Minerva(
|
||||||
|
with_rvfi=True,
|
||||||
|
with_muldiv=True,
|
||||||
|
with_icache=True,
|
||||||
|
icache_nways=2,
|
||||||
|
icache_nlines=2,
|
||||||
|
icache_nwords=4,
|
||||||
|
icache_base=0x1000,
|
||||||
|
icache_limit=0x4000,
|
||||||
|
with_dcache=True,
|
||||||
|
dcache_nways=2,
|
||||||
|
dcache_nlines=2,
|
||||||
|
dcache_nwords=4,
|
||||||
|
dcache_base=0x1000,
|
||||||
|
dcache_limit=0x4000)
|
||||||
m.submodules.causal_spec = causal_spec = CausalCheck()
|
m.submodules.causal_spec = causal_spec = CausalCheck()
|
||||||
|
|
||||||
# Wire input ports to Minerva core
|
# Wire input ports to Minerva core
|
||||||
m.d.comb += cpu.external_interrupt.eq(AnySeq(32))
|
m.d.comb += cpu.external_interrupt.eq(0)
|
||||||
m.d.comb += cpu.timer_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.timer_interrupt.eq(0)
|
||||||
m.d.comb += cpu.software_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.software_interrupt.eq(0)
|
||||||
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.ibus.err.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.err.eq(0)
|
||||||
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.dbus.err.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.err.eq(0)
|
||||||
|
|
||||||
m.d.comb += causal_spec.reset.eq(AnySeq(1))
|
m.d.comb += causal_spec.reset.eq(AnySeq(1))
|
||||||
m.d.comb += causal_spec.check.eq(AnySeq(1))
|
m.d.comb += causal_spec.check.eq(AnySeq(1))
|
||||||
|
|
@ -384,30 +454,44 @@ class CausalSpec(Elaboratable):
|
||||||
|
|
||||||
class CausalTestCase(FHDLTestCase):
|
class CausalTestCase(FHDLTestCase):
|
||||||
def verify(self):
|
def verify(self):
|
||||||
self.assertFormal(CausalSpec(), mode="cover", depth=40)
|
self.assertFormal(CausalSpec(), mode="cover", depth=20)
|
||||||
self.assertFormal(CausalSpec(), mode="bmc", depth=40)
|
self.assertFormal(CausalSpec(), mode="bmc", depth=20)
|
||||||
|
|
||||||
class LivenessSpec(Elaboratable):
|
class LivenessSpec(Elaboratable):
|
||||||
def elaborate(self, platform):
|
def elaborate(self, platform):
|
||||||
m = Module()
|
m = Module()
|
||||||
|
|
||||||
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
|
m.submodules.cpu = cpu = Minerva(
|
||||||
|
with_rvfi=True,
|
||||||
|
with_muldiv=True,
|
||||||
|
with_icache=True,
|
||||||
|
icache_nways=2,
|
||||||
|
icache_nlines=2,
|
||||||
|
icache_nwords=4,
|
||||||
|
icache_base=0x1000,
|
||||||
|
icache_limit=0x4000,
|
||||||
|
with_dcache=True,
|
||||||
|
dcache_nways=2,
|
||||||
|
dcache_nlines=2,
|
||||||
|
dcache_nwords=4,
|
||||||
|
dcache_base=0x1000,
|
||||||
|
dcache_limit=0x4000)
|
||||||
m.submodules.liveness_spec = liveness_spec = LivenessCheck()
|
m.submodules.liveness_spec = liveness_spec = LivenessCheck()
|
||||||
|
|
||||||
# Wire input ports to Minerva core
|
# Wire input ports to Minerva core
|
||||||
m.d.comb += cpu.external_interrupt.eq(AnySeq(32))
|
m.d.comb += cpu.external_interrupt.eq(0)
|
||||||
m.d.comb += cpu.timer_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.timer_interrupt.eq(0)
|
||||||
m.d.comb += cpu.software_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.software_interrupt.eq(0)
|
||||||
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.ibus.err.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.err.eq(0)
|
||||||
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.dbus.err.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.err.eq(0)
|
||||||
|
|
||||||
m.d.comb += liveness_spec.reset.eq(AnySeq(1))
|
m.d.comb += liveness_spec.reset.eq(AnySeq(1))
|
||||||
m.d.comb += liveness_spec.trig.eq(AnySeq(1))
|
m.d.comb += liveness_spec.trig.eq(AnySeq(1))
|
||||||
m.d.comb ++ liveness_spec.check.eq(AnySeq(1))
|
m.d.comb += liveness_spec.check.eq(AnySeq(1))
|
||||||
|
|
||||||
m.d.comb += liveness_spec.rvfi_valid.eq(cpu.rvfi.valid)
|
m.d.comb += liveness_spec.rvfi_valid.eq(cpu.rvfi.valid)
|
||||||
m.d.comb += liveness_spec.rvfi_order.eq(cpu.rvfi.order)
|
m.d.comb += liveness_spec.rvfi_order.eq(cpu.rvfi.order)
|
||||||
|
|
@ -417,26 +501,40 @@ class LivenessSpec(Elaboratable):
|
||||||
|
|
||||||
class LivenessTestCase(FHDLTestCase):
|
class LivenessTestCase(FHDLTestCase):
|
||||||
def verify(self):
|
def verify(self):
|
||||||
self.assertFormal(LivenessSpec(), mode="cover", depth=40)
|
self.assertFormal(LivenessSpec(), mode="cover", depth=20)
|
||||||
self.assertFormal(LivenessSpec(), mode="bmc", depth=40)
|
self.assertFormal(LivenessSpec(), mode="bmc", depth=20)
|
||||||
|
|
||||||
class UniqueSpec(Elaboratable):
|
class UniqueSpec(Elaboratable):
|
||||||
def elaborate(self, platform):
|
def elaborate(self, platform):
|
||||||
m = Module()
|
m = Module()
|
||||||
|
|
||||||
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
|
m.submodules.cpu = cpu = Minerva(
|
||||||
|
with_rvfi=True,
|
||||||
|
with_muldiv=True,
|
||||||
|
with_icache=True,
|
||||||
|
icache_nways=2,
|
||||||
|
icache_nlines=2,
|
||||||
|
icache_nwords=4,
|
||||||
|
icache_base=0x1000,
|
||||||
|
icache_limit=0x4000,
|
||||||
|
with_dcache=True,
|
||||||
|
dcache_nways=2,
|
||||||
|
dcache_nlines=2,
|
||||||
|
dcache_nwords=4,
|
||||||
|
dcache_base=0x1000,
|
||||||
|
dcache_limit=0x4000)
|
||||||
m.submodules.unique_spec = unique_spec = UniqueCheck()
|
m.submodules.unique_spec = unique_spec = UniqueCheck()
|
||||||
|
|
||||||
# Wire input ports to Minerva core
|
# Wire input ports to Minerva core
|
||||||
m.d.comb += cpu.external_interrupt.eq(AnySeq(32))
|
m.d.comb += cpu.external_interrupt.eq(0)
|
||||||
m.d.comb += cpu.timer_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.timer_interrupt.eq(0)
|
||||||
m.d.comb += cpu.software_interrupt.eq(AnySeq(1))
|
m.d.comb += cpu.software_interrupt.eq(0)
|
||||||
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.ibus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.ibus.err.eq(AnySeq(1))
|
m.d.comb += cpu.ibus.err.eq(0)
|
||||||
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
m.d.comb += cpu.dbus.dat_r.eq(AnySeq(32))
|
||||||
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.ack.eq(AnySeq(1))
|
||||||
m.d.comb += cpu.dbus.err.eq(AnySeq(1))
|
m.d.comb += cpu.dbus.err.eq(0)
|
||||||
|
|
||||||
m.d.comb += unique_spec.reset.eq(AnySeq(1))
|
m.d.comb += unique_spec.reset.eq(AnySeq(1))
|
||||||
m.d.comb += unique_spec.trig.eq(AnySeq(1))
|
m.d.comb += unique_spec.trig.eq(AnySeq(1))
|
||||||
|
|
@ -449,8 +547,8 @@ class UniqueSpec(Elaboratable):
|
||||||
|
|
||||||
class UniqueTestCase(FHDLTestCase):
|
class UniqueTestCase(FHDLTestCase):
|
||||||
def verify(self):
|
def verify(self):
|
||||||
self.assertFormal(UniqueSpec(), mode="cover", depth=40)
|
self.assertFormal(UniqueSpec(), mode="cover", depth=20)
|
||||||
self.assertFormal(UniqueSpec(), mode="bmc", depth=40)
|
self.assertFormal(UniqueSpec(), mode="bmc", depth=20)
|
||||||
|
|
||||||
print('*' * 80)
|
print('*' * 80)
|
||||||
print('*' + ' ' * 78 + '*')
|
print('*' + ' ' * 78 + '*')
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue