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riscv-formal-nmigen
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Restructure insns directory contents #2

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dsleung merged 109 commits from restructuring into master 2020-08-13 15:20:35 +08:00
Conversation 0 Commits 109 Files Changed 82 +903 -5107
82 changed files with 903 additions and 5107 deletions
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2
README.md
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@ -12,7 +12,7 @@ TODO
## Scope ## Scope
The full [RISC-V specification](https://riscv.org/specifications/) is hundreds of pages long including numerous possible extensions, some of which are still under active development at the time of writing. Therefore, this project does not aim to formalize the entire specification, but only the core parts of the specification, namely RV32I (except FENCE, ECALL and EBREAK) and perhaps RV32IM. Support for other extensions of the RISC-V specification may be added in the future. As with the original riscv-formal, support is planned for the RV32I and RV64I base ISAs, as well as the M and C extensions and combinations thereof (e.g. RV32IM, RV64IMC).
## License ## License

81
checks/rvfi_causal_check.py
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@ -1,81 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_causal_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
insn_order = AnyConst(64)
register_index = AnyConst(5)
found_non_causal = Signal(1, reset=0)
with m.If(self.reset):
m.d.sync += found_non_causal.eq(0)
with m.Else():
with m.If(self.check):
m.d.comb += Assume(register_index != 0)
m.d.comb += Assume(self.rvfi_valid)
m.d.comb += Assume(register_index == self.rvfi_rd_addr)
m.d.comb += Assume(insn_order == self.rvfi_order)
m.d.comb += Assert(~found_non_causal)
with m.Else():
with m.If(self.rvfi_valid & (self.rvfi_order > insn_order) & \
((register_index == self.rvfi_rs1_addr) | \
(register_index == self.rvfi_rs2_addr))):
m.d.sync += found_non_causal.eq(1)
return m

103
checks/rvfi_channel.py
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@ -1,103 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_channel(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
valid = Signal(1)
m.d.comb += valid.eq(self.rvfi_valid)
order = Signal(64)
m.d.comb += order.eq(self.rvfi_order)
insn = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn.eq(self.rvfi_insn)
trap = Signal(1)
m.d.comb += trap.eq(self.rvfi_trap)
halt = Signal(1)
m.d.comb += halt.eq(self.rvfi_halt)
intr = Signal(1)
m.d.comb += intr.eq(self.rvfi_intr)
mode = Signal(2)
m.d.comb += mode.eq(self.rvfi_mode)
ixl = Signal(2)
m.d.comb += ixl.eq(self.rvfi_ixl)
rs1_addr = Signal(5)
m.d.comb += rs1_addr.eq(self.rvfi_rs1_addr)
rs2_addr = Signal(5)
m.d.comb += rs2_addr.eq(self.rvfi_rs2_addr)
rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs1_rdata.eq(self.rvfi_rs1_rdata)
rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs2_rdata.eq(self.rvfi_rs2_rdata)
rd_addr = Signal(5)
m.d.comb += rd_addr.eq(self.rvfi_rd_addr)
rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rd_wdata.eq(self.rvfi_rd_wdata)
pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_rdata.eq(self.rvfi_pc_rdata)
pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_wdata.eq(self.rvfi_pc_wdata)
mem_addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_addr.eq(self.rvfi_mem_addr)
mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
m.d.comb += mem_rmask.eq(self.rvfi_mem_rmask)
mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
m.d.comb += mem_wmask.eq(self.rvfi_mem_wmask)
mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_rdata.eq(self.rvfi_mem_rdata)
mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_wdata.eq(self.rvfi_mem_wdata)
return m

82
checks/rvfi_dmem_check.py
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@ -1,82 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_dmem_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.enable = Signal(1)
self.dmem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.enable,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = [
self.dmem_addr
]
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
dmem_addr_randval = AnyConst(self.RISCV_FORMAL_XLEN)
m.d.comb += self.dmem_addr.eq(dmem_addr_randval)
dmem_shadow = Signal(self.RISCV_FORMAL_XLEN)
dmem_written = Signal(int(self.RISCV_FORMAL_XLEN // 8), reset=0)
with m.If(self.reset):
m.d.sync += dmem_written.eq(0)
with m.Else():
with m.If(self.rvfi_valid & (self.rvfi_mem_addr == self.dmem_addr) & 1):
for i in range(int(self.RISCV_FORMAL_XLEN // 8)):
with m.If(self.enable & self.rvfi_mem_rmask[i] & dmem_written[i]):
m.d.comb += Assert(dmem_shadow[i*8:i*8+8] == self.rvfi_mem_rdata[i*8:i*8+8])
with m.If(self.rvfi_mem_wmask[i]):
m.d.sync += dmem_shadow[i*8:i*8+8].eq(self.rvfi_mem_wdata[i*8:i*8+8])
m.d.sync += dmem_written[i].eq(1)
return m

77
checks/rvfi_hang_check.py
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@ -1,77 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_hang_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.trig = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.trig,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
okay = Signal(1, reset=0)
with m.If(self.reset):
m.d.sync += okay.eq(0)
with m.Else():
with m.If(self.rvfi_valid):
m.d.sync += okay.eq(1)
with m.If(self.check):
m.d.comb += Assert(okay)
with m.If(self.rvfi_valid):
m.d.comb += Assume(~self.rvfi_halt)
m.d.comb += Assume(self.rvfi_insn != 0b00010000010100000000000001110011) # WFI
return m

109
checks/rvfi_ill_check.py
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@ -1,109 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_ill_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
valid = Signal(1)
m.d.comb += valid.eq((~self.reset) & self.rvfi_valid)
insn = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn.eq(self.rvfi_insn)
trap = Signal(1)
m.d.comb += trap.eq(self.rvfi_trap)
halt = Signal(1)
m.d.comb += halt.eq(self.rvfi_halt)
intr = Signal(1)
m.d.comb += intr.eq(self.rvfi_intr)
rs1_addr = Signal(5)
m.d.comb += rs1_addr.eq(self.rvfi_rs1_addr)
rs2_addr = Signal(5)
m.d.comb += rs2_addr.eq(self.rvfi_rs2_addr)
rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs1_rdata.eq(self.rvfi_rs1_rdata)
rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs2_rdata.eq(self.rvfi_rs2_rdata)
rd_addr = Signal(5)
m.d.comb += rd_addr.eq(self.rvfi_rd_addr)
rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rd_wdata.eq(self.rvfi_rd_wdata)
pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_rdata.eq(self.rvfi_pc_rdata)
pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_wdata.eq(self.rvfi_pc_wdata)
mem_addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_addr.eq(self.rvfi_mem_addr)
mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
m.d.comb += mem_rmask.eq(self.rvfi_mem_rmask)
mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
m.d.comb += mem_wmask.eq(self.rvfi_mem_wmask)
mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_rdata.eq(self.rvfi_mem_rdata)
mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_wdata.eq(self.rvfi_mem_wdata)
m.d.comb += Cover((~self.reset) & self.check & valid & (insn == 0))
with m.If((~self.reset) & self.check):
m.d.comb += Assume(valid)
m.d.comb += Assume(insn == 0)
m.d.comb += Assert(trap)
m.d.comb += Assert(rd_addr == 0)
m.d.comb += Assert(rd_wdata == 0)
m.d.comb += Assert(mem_wmask == 0)
return m

88
checks/rvfi_imem_check.py
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@ -1,88 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_imem_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.enable = Signal(1)
self.imem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.imem_data = Signal(16)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.enable,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = [
self.imem_addr,
self.imem_data
]
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
imem_addr_randval = AnyConst(self.RISCV_FORMAL_XLEN)
imem_data_randval = AnyConst(16)
m.d.comb += self.imem_addr.eq(imem_addr_randval)
m.d.comb += self.imem_data.eq(imem_data_randval)
pc = Signal(self.RISCV_FORMAL_XLEN)
insn = Signal(self.RISCV_FORMAL_ILEN)
with m.If(self.reset):
pass
with m.Else():
with m.If(self.enable & self.rvfi_valid):
m.d.sync += pc.eq(self.rvfi_pc_rdata)
m.d.sync += insn.eq(self.rvfi_insn)
with m.If(pc == self.imem_addr):
m.d.comb += Assert(insn[:16] == self.imem_data)
with m.If((insn[:2] == 0b11) & (pc + 2 == self.imem_addr)):
m.d.comb += Assert(insn[16:32] == self.imem_data)
return m

205
checks/rvfi_insn_check.py
View File

@ -1,205 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
# Ugly hack for now to get the insn_add import working
import sys
sys.path.append('../insns')
from insn_add import *
class rvfi_insn_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
valid = Signal(1)
m.d.comb += valid.eq((~self.reset) & self.rvfi_valid)
insn = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn.eq(self.rvfi_insn)
trap = Signal(1)
m.d.comb += trap.eq(self.rvfi_trap)
halt = Signal(1)
m.d.comb += halt.eq(self.rvfi_halt)
intr = Signal(1)
m.d.comb += intr.eq(self.rvfi_intr)
rs1_addr = Signal(5)
m.d.comb += rs1_addr.eq(self.rvfi_rs1_addr)
rs2_addr = Signal(5)
m.d.comb += rs2_addr.eq(self.rvfi_rs2_addr)
rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs1_rdata.eq(self.rvfi_rs1_rdata)
rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs2_rdata.eq(self.rvfi_rs2_rdata)
rd_addr = Signal(5)
m.d.comb += rd_addr.eq(self.rvfi_rd_addr)
rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rd_wdata.eq(self.rvfi_rd_wdata)
pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_rdata.eq(self.rvfi_pc_rdata)
pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_wdata.eq(self.rvfi_pc_wdata)
mem_addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_addr.eq(self.rvfi_mem_addr)
mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
m.d.comb += mem_rmask.eq(self.rvfi_mem_rmask)
mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
m.d.comb += mem_wmask.eq(self.rvfi_mem_wmask)
mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_rdata.eq(self.rvfi_mem_rdata)
mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += mem_wdata.eq(self.rvfi_mem_wdata)
spec_valid = Signal(1)
spec_trap = Signal(1)
spec_rs1_addr = Signal(5)
spec_rs2_addr = Signal(5)
spec_rd_addr = Signal(5)
spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
rs1_rdata_or_zero = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs1_rdata_or_zero.eq(Mux(spec_rs1_addr != 0, rs1_rdata, 0))
rs2_rdata_or_zero = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += rs2_rdata_or_zero.eq(Mux(spec_rs2_addr != 0, rs2_rdata, 0))
# Change this submodule accordingly to test for different instructions(?)
m.submodules.insn_spec = insn_spec = rvfi_insn_add(self.RISCV_FORMAL_ILEN, self.RISCV_FORMAL_XLEN)
m.d.comb += insn_spec.rvfi_valid.eq(valid)
m.d.comb += insn_spec.rvfi_insn.eq(insn)
m.d.comb += insn_spec.rvfi_pc_rdata.eq(pc_rdata)
m.d.comb += insn_spec.rvfi_rs1_rdata.eq(rs1_rdata_or_zero)
m.d.comb += insn_spec.rvfi_rs2_rdata.eq(rs2_rdata_or_zero)
m.d.comb += insn_spec.rvfi_mem_rdata.eq(mem_rdata)
m.d.comb += spec_valid.eq(insn_spec.spec_valid)
m.d.comb += spec_trap.eq(insn_spec.spec_trap)
m.d.comb += spec_rs1_addr.eq(insn_spec.spec_rs1_addr)
m.d.comb += spec_rs2_addr.eq(insn_spec.spec_rs2_addr)
m.d.comb += spec_rd_addr.eq(insn_spec.spec_rd_addr)
m.d.comb += spec_rd_wdata.eq(insn_spec.spec_rd_wdata)
m.d.comb += spec_pc_wdata.eq(insn_spec.spec_pc_wdata)
m.d.comb += spec_mem_addr.eq(insn_spec.spec_mem_addr)
m.d.comb += spec_mem_rmask.eq(insn_spec.spec_mem_rmask)
m.d.comb += spec_mem_wmask.eq(insn_spec.spec_mem_wmask)
m.d.comb += spec_mem_wdata.eq(insn_spec.spec_mem_wdata)
insn_pma_x = Signal(1)
mem_pma_r = Signal(1)
mem_pma_w = Signal(1)
mem_log2len = Signal(2)
m.d.comb += mem_log2len.eq(Mux((spec_mem_rmask | spec_mem_wmask) & 0b11110000, 3, Mux((spec_mem_rmask | spec_mem_wmask) & 0b00001100, 2, Mux((spec_mem_rmask | spec_mem_wmask) & 0b00000010, 1, 0))))
m.d.comb += insn_pma_x.eq(1)
m.d.comb += mem_pma_r.eq(1)
m.d.comb += mem_pma_w.eq(1)
mem_access_fault = Signal(1)
m.d.comb += mem_access_fault.eq((spec_mem_rmask & ~mem_pma_r) | (spec_mem_wmask & ~mem_pma_w) | (spec_mem_rmask | spec_mem_wmask))
with m.If(~self.reset):
m.d.comb += Cover(spec_valid)
m.d.comb += Cover(spec_valid & ~trap)
m.d.comb += Cover(self.check & spec_valid)
m.d.comb += Cover(self.check & spec_valid & ~trap)
with m.If((~self.reset) & self.check):
m.d.comb += Assume(spec_valid)
with m.If((~insn_pma_x) | mem_access_fault):
m.d.comb += Assert(trap)
m.d.comb += Assert(rd_addr == 0)
m.d.comb += Assert(rd_wdata == 0)
m.d.comb += Assert(mem_wmask == 0)
with m.Else():
with m.If(rs1_addr == 0):
m.d.comb += Assert(rs1_rdata == 0)
with m.If(rs2_addr == 0):
m.d.comb += Assert(rs2_rdata == 0)
with m.If(~spec_trap):
with m.If(spec_rs1_addr != 0):
m.d.comb += Assert(spec_rs1_addr == rs1_addr)
with m.If(spec_rs2_addr != 0):
m.d.comb += Assert(spec_rs2_addr == rs2_addr)
m.d.comb += Assert(spec_rd_addr == rd_addr)
m.d.comb += Assert(spec_rd_wdata == rd_wdata)
m.d.comb += Assert(spec_pc_wdata == pc_wdata)
with m.If(spec_mem_wmask | spec_mem_rmask):
m.d.comb += Assert(spec_mem_addr == mem_addr)
for i in range(int(self.RISCV_FORMAL_XLEN // 8)):
with m.If(spec_mem_wmask[i]):
m.d.comb += Assert(mem_wmask[i])
m.d.comb += Assert(spec_mem_wdata[i*8:i*8+8] == mem_wdata[i*8:i*8+8])
with m.Elif(mem_wmask[i]):
m.d.comb += Assert(mem_rmask[i])
m.d.comb += Assert(mem_rdata[i*8:i*8+8] == mem_wdata[i*8:i*8+8])
with m.If(spec_mem_rmask[i]):
m.d.comb += Assert(mem_rmask[i])
m.d.comb += Assert(spec_trap == trap)
return m

79
checks/rvfi_liveness_check.py
View File

@ -1,79 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_liveness_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.trig = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.trig,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
insn_order = AnyConst(64)
found_next_insn = Signal(1, reset=0)
with m.If(self.reset):
m.d.sync += found_next_insn.eq(0)
with m.Else():
with m.If(self.rvfi_valid & (self.rvfi_order == insn_order + 1)):
m.d.sync += found_next_insn.eq(1)
with m.If(self.trig):
m.d.comb += Assume(self.rvfi_valid)
m.d.comb += Assume(~self.rvfi_halt)
m.d.comb += Assume(insn_order == self.rvfi_order)
with m.If(self.check):
m.d.comb += Assert(found_next_insn)
return m

82
checks/rvfi_pc_bwd_check.py
View File

@ -1,82 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_pc_bwd_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
insn_order = AnyConst(64)
expect_pc = Signal(self.RISCV_FORMAL_XLEN)
expect_pc_valid = Signal(1, reset=0)
pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_wdata.eq(self.rvfi_pc_wdata)
with m.If(self.reset):
m.d.sync += expect_pc_valid.eq(0)
with m.Else():
with m.If(self.check):
m.d.comb += Assume(self.rvfi_valid)
m.d.comb += Assume(insn_order == self.rvfi_order)
with m.If(expect_pc_valid):
m.d.comb += Assert(expect_pc == pc_wdata)
with m.Else():
with m.If(self.rvfi_valid & (self.rvfi_order == insn_order + 1)):
m.d.sync += expect_pc.eq(self.rvfi_pc_rdata)
m.d.sync += expect_pc_valid.eq(1)
return m

82
checks/rvfi_pc_fwd_check.py
View File

@ -1,82 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_pc_fwd_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
insn_order = AnyConst(64)
expect_pc = Signal(self.RISCV_FORMAL_XLEN)
expect_pc_valid = Signal(1, reset=0)
pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += pc_rdata.eq(self.rvfi_pc_rdata)
with m.If(self.reset):
m.d.sync += expect_pc_valid.eq(0)
with m.Else():
with m.If(self.check):
m.d.comb += Assume(self.rvfi_valid)
m.d.comb += Assume(insn_order == self.rvfi_order)
with m.If(expect_pc_valid):
m.d.comb += Assert(expect_pc == pc_rdata)
with m.Else():
with m.If(self.rvfi_valid & (self.rvfi_order == insn_order - 1)):
m.d.sync += expect_pc.eq(self.rvfi_pc_wdata)
m.d.sync += expect_pc_valid.eq(1)
return m

84
checks/rvfi_reg_check.py
View File

@ -1,84 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_reg_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
insn_order = AnyConst(64)
register_index = AnyConst(5)
register_shadow = Signal(self.RISCV_FORMAL_XLEN, reset=0)
register_written = Signal(1, reset=0)
with m.If(self.reset):
m.d.sync += register_shadow.eq(0)
m.d.sync += register_written.eq(0)
with m.Else():
with m.If(self.check):
m.d.comb += Assume(self.rvfi_valid)
m.d.comb += Assume(insn_order == self.rvfi_order)
with m.If(register_written & (register_index == self.rvfi_rs1_addr)):
m.d.comb += Assert(register_shadow == self.rvfi_rs1_rdata)
with m.If(register_written & (register_index == self.rvfi_rs2_addr)):
m.d.comb += Assert(register_shadow == self.rvfi_rs2_rdata)
with m.Else():
with m.If(self.rvfi_valid & (self.rvfi_order < insn_order) & (register_index == self.rvfi_rd_addr)):
m.d.sync += register_shadow.eq(self.rvfi_rd_wdata)
m.d.sync += register_written.eq(1)
return m

78
checks/rvfi_unique_check.py
View File

@ -1,78 +0,0 @@
from nmigen import *
from nmigen.hdl.ast import *
class rvfi_unique_check(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.reset = Signal(1)
self.trig = Signal(1)
self.check = Signal(1)
self.rvfi_valid = Signal(1)
self.rvfi_order = Signal(64)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_trap = Signal(1)
self.rvfi_halt = Signal(1)
self.rvfi_intr = Signal(1)
self.rvfi_mode = Signal(2)
self.rvfi_ixl = Signal(2)
self.rvfi_rs1_addr = Signal(5)
self.rvfi_rs2_addr = Signal(5)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rd_addr = Signal(5)
self.rvfi_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
def ports(self):
input_ports = [
self.reset,
self.trig,
self.check,
self.rvfi_valid,
self.rvfi_order,
self.rvfi_insn,
self.rvfi_trap,
self.rvfi_halt,
self.rvfi_intr,
self.rvfi_mode,
self.rvfi_ixl,
self.rvfi_rs1_addr,
self.rvfi_rs2_addr,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_rd_addr,
self.rvfi_rd_wdata,
self.rvfi_pc_rdata,
self.rvfi_pc_wdata,
self.rvfi_mem_addr,
self.rvfi_mem_rmask,
self.rvfi_mem_wmask,
self.rvfi_mem_rdata,
self.rvfi_mem_wdata
]
output_ports = []
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
insn_order = AnyConst(64)
found_other_insn = Signal(1, reset=0)
with m.If(self.reset):
m.d.sync += found_other_insn.eq(0)
with m.Else():
with m.If(self.rvfi_valid & (self.rvfi_order == insn_order) & ~self.trig):
m.d.sync += found_other_insn.eq(1)
with m.If(self.trig):
m.d.comb += Assume(self.rvfi_valid)
m.d.comb += Assume(insn_order == self.rvfi_order)
with m.If(self.check):
m.d.comb += Assert(~found_other_insn)
return m

112
insns/README.md
View File

@ -1,28 +1,102 @@
# RISC-V Instructions # RISC-V Instructions
Refer to the table below for the instructions currently supported. At the time of writing, it covers the instructions in the RV32I base ISA except FENCE, ECALL and EBREAK, as well as the RV32M extension\*. ## Instructions
Below is a table of RISC-V instructions supported by the original riscv-formal framework at the time of writing, categorized by instruction type.
| Instruction type | Instructions | | Instruction type | Instructions |
| --- | --- | | --- | --- |
| U-type | lui, auipc | | R-type | ADD, ADDW, AND, DIV, DIVU, DIVUW, DIVW, MUL, MULH, MULHSU, MULHU, MULW, OR, REM, REMU, REMUW, REMW, SLL, SLLW, SLT, SLTU, SRA, SRAW, SRL, SRLW, SUB, SUBW, XOR |
| UJ-type | jal | | I-type | ADDI, ADDIW, ANDI, JALR, LB, LBU, LD, LH, LHU, LW, LWU, ORI, SLTI, SLTIU, XORI |
| I-type | jalr, lb, lh, lw, lbu, lhu, addi, slti, sltiu, xori, ori, andi | | I-type (shift variation) | SLLI, SLLIW, SRAI, SRAIW, SRLI, SRLIW |
| SB-type | beq, bne, blt, bge, bltu, bgeu | | S-type | SB, SD, SH, SW |
| S-type | sb, sh, sw | | SB-type | BEQ, BGE, BGEU, BLT, BLTU, BNE |
| I-type (shift variation) | slli, srli, srai | | U-type | AUIPC, LUI |
| R-type | add, sub, sll, slt, sltu, xor, srl, sra, or, and, mul, mulh, mulhsu, mulhu, div, divu, rem, remu | | UJ-type | JAL |
| CI-type | C\_ADD, C\_ADDI, C\_ADDIW, C\_JALR, C\_JR, C\_LI, C\_MV |
| CI-type (SP variation) | C\_ADDI16SP |
| CI-type (ANDI variation) | C\_ANDI |
| CI-type (LSP variation, 32 bit version) | C\_LWSP |
| CI-type (LSP variation, 64 bit version) | C\_LDSP |
| CI-type (LUI variation) | C\_LUI |
| CI-type (SLI variation) | C\_SLLI |
| CI-type (SRI variation) | C\_SRAI, C\_SRLI |
| CIW-type | C\_ADDI4SPN |
| CS-type (ALU version) | C\_ADDW, C\_AND, C\_OR, C\_SUB, C\_SUBW, C\_XOR |
| CS-type (32 bit version) | C\_SW |
| CS-type (64 bit version) | C\_SD |
| CSS-type (32 bit version) | C\_SWSP |
| CSS-type (64 bit version) | C\_SDSP |
| CB-type | C\_BEQZ, C\_BNEZ |
| CJ-type | C\_J, C\_JAL |
| CL-type (32 bit version) | C\_LW |
| CL-type (64 bit version) | C\_LD |
\* Due to limitations with modern solvers, they are sometimes unable to verify assertions involving multiplication and/or division; therefore, the core under test is expected to implement alternative operations for the RV32M extensions for the purposes of formal verification only, replacing multiplication/division operations with addition/subtraction and XORing with selected bitmasks. ## Class Synopsis
## Caveats ### Instructions
At the time of writing, the set of instructions supported in this port of riscv-formal is a mere subset of those supported in the original riscv-formal; for example, compressed instructions and 64-bit ISAs/extensions are not supported. Also note that the original riscv-formal contains tunable parameters that have been fixed to certain values in this translation: Below is a list of instructions currently supported by this port of the riscv-formal framework and is expected to grow over time. The instructions are roughly grouped by instruction type but sometimes with further specializations - the hierarchy of the lists reflects the hierarchy of inheritance in the classes used to represent various instructions.
| Parameter from riscv-formal | Fixed value in riscv-formal-nmigen | - `Insn`: General RISC-V instruction
| --- | --- | - `InsnRV32IRType`: RV32I R-Type Instruction
| `RISCV_FORMAL_ILEN` | 32 | - `InsnAdd`: ADD instruction
| `RISCV_FORMAL_XLEN` | 32 | - `InsnSub`: SUB instruction
| `RISCV_FORMAL_CSR_MISA` | undefined | - `InsnSll`: SLL instruction
| `RISCV_FORMAL_COMPRESSED` | undefined | - `InsnSlt`: SLT instruction
| `RISCV_FORMAL_ALIGNED_MEM` | undefined | - `InsnSltu`: SLTU instruction
| `RISCV_FORMAL_ALTOPS` | defined | - `InsnXor`: XOR instruction
- `InsnSrl`: SRL instruction
- `InsnSra`: SRA instruction
- `InsnOr`: OR instruction
- `InsnAnd`: AND instruction
- `InsnRV32IITypeShift`: RV32I I-Type Instruction (Shift Variation)
- `InsnSlli`: SLLI instruction
- `InsnSrli`: SRLI instruction
- `InsnSrai`: SRAI instruction
- `InsnRV32IIType`: RV32I I-Type Instruction
- `InsnJalr`: JALR instruction
- `InsnRV32IITypeLoad`: RV32I I-Type Instruction (Load Variation)
- `InsnLb`: LB instruction
- `InsnLh`: LH instruction
- `InsnLw`: LW instruction
- `InsnLbu`: LBU instruction
- `InsnLhu`: LHU instruction
- `InsnRV32IITypeArith`: RV32I I-Type Instruction (Arithmetic Variation)
- `InsnAddi`: ADDI instruction
- `InsnSlti`: SLTI instruction
- `InsnSltiu`: SLTIU instruction
- `InsnXori`: XORI instruction
- `InsnOri`: ORI instruction
- `InsnAndi`: ANDI instruction
- `InsnRV32ISType`: RV32I S-Type Instruction
- `InsnSb`: SB instruction
- `InsnSh`: SH instruction
- `InsnSw`: SW instruction
- `InsnRV32ISBType`: RV32I SB-Type Instruction
- `InsnBeq`: BEQ instruction
- `InsnBne`: BNE instruction
- `InsnBlt`: BLT instruction
- `InsnBge`: BGE instruction
- `InsnBltu`: BLTU instruction
- `InsnBgeu`: BGEU instruction
- `InsnJal`: JAL instruction
- `InsnRV32IUType`: RV32I U-Type Instruction
- `InsnLui`: LUI instruction
- `InsnAuipc`: AUIPC instruction
### ISAs
- `IsaRV32I`: RV32I Base ISA
## Core-specific constants
The following core-specific constants are currently supported:
| Constant | Description | Valid value(s) | Supported by instruction(s) | Supported by ISA(s) |
| --- | --- | --- | --- | --- |
| `RISCV_FORMAL_ILEN` | Max length of instruction retired by core | `32` | LUI, AUIPC, JAL, JALR, BEQ, BNE, BLT, BGE, BLTU, BGEU, LB, LH, LW, LBU, LHU, SB, SH, SW, ADDI, SLTI, SLTIU, XORI, ORI, ANDI, SLLI, SRLI, SRAI, ADD, SUB, SLL, SLT, SLTU, XOR, SRL, SRA, OR, AND | RV32I |
| `RISCV_FORMAL_XLEN` | Width of integer registers | `32` | LUI, AUIPC, JAL, JALR, BEQ, BNE, BLT, BGE, BLTU, BGEU, LB, LH, LW, LBU, LHU, SB, SH, SW, ADDI, SLTI, SLTIU, XORI, ORI, ANDI, SLLI, SRLI, SRAI, ADD, SUB, SLL, SLT, SLTU, XOR, SRL, SRA, OR, AND | RV32I |
| `RISCV_FORMAL_CSR_MISA` | Support for MISA CSRs enabled | `True`, `False` | LUI, AUIPC, JAL, JALR, BEQ, BNE, BLT, BGE, BLTU, BGEU, LB, LH, LW, LBU, LHU, SB, SH, SW, ADDI, SLTI, SLTIU, XORI, ORI, ANDI, SLLI, SRLI, SRAI, ADD, SUB, SLL, SLT, SLTU, XOR, SRL, SRA, OR, AND | RV32I |
| `RISCV_FORMAL_COMPRESSED` | Support for compressed instructions | `True`, `False` | JAL, JALR, BEQ, BNE, BLT, BGE, BLTU, BGEU | RV32I |
| `RISCV_FORMAL_ALIGNED_MEM` | Require aligned memory accesses | `True`, `False` | LB, LH, LW, LBU, LHU, SB, SH, SW | RV32I |

87
insns/insn.py
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@ -1,27 +1,55 @@
from nmigen import * from nmigen import *
class rvfi_insn(Elaboratable): """
def __init__(self): Insn.py
# Input ports Class for generic RISC-V instructions
self.rvfi_valid = Signal(1) """
self.rvfi_insn = Signal(32)
self.rvfi_pc_rdata = Signal(32)
self.rvfi_rs1_rdata = Signal(32)
self.rvfi_rs2_rdata = Signal(32)
self.rvfi_mem_rdata = Signal(32)
# Output ports class Insn(Elaboratable):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
# Core-specific constants
self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN
self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN
self.RISCV_FORMAL_CSR_MISA = RISCV_FORMAL_CSR_MISA
# RVFI input ports
self.rvfi_valid = Signal(1)
self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)
self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)
self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)
if self.RISCV_FORMAL_CSR_MISA:
self.rvfi_csr_misa_rdata = Signal(self.RISCV_FORMAL_XLEN)
# RVFI output ports
if self.RISCV_FORMAL_CSR_MISA:
self.spec_csr_misa_rmask = Signal(self.RISCV_FORMAL_XLEN)
self.spec_valid = Signal(1) self.spec_valid = Signal(1)
self.spec_trap = Signal(1) self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5) self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5) self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5) self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(32) self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(32) self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(32) self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(4) self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(4) self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(32) self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
# Additional wires and registers
self.insn_padding = Signal(self.RISCV_FORMAL_ILEN)
self.insn_imm = Signal(self.RISCV_FORMAL_XLEN)
self.insn_funct7 = Signal(7)
self.insn_funct6 = Signal(6)
self.insn_shamt = Signal(6)
self.insn_rs2 = Signal(5)
self.insn_rs1 = Signal(5)
self.insn_funct3 = Signal(3)
self.insn_rd = Signal(5)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
self.ialign16 = Signal(1)
def ports(self): def ports(self):
input_ports = [ input_ports = [
self.rvfi_valid, self.rvfi_valid,
@ -31,6 +59,8 @@ class rvfi_insn(Elaboratable):
self.rvfi_rs2_rdata, self.rvfi_rs2_rdata,
self.rvfi_mem_rdata self.rvfi_mem_rdata
] ]
if self.RISCV_FORMAL_CSR_MISA:
input_ports.append(self.rvfi_csr_misa_rdata)
output_ports = [ output_ports = [
self.spec_valid, self.spec_valid,
self.spec_trap, self.spec_trap,
@ -44,8 +74,33 @@ class rvfi_insn(Elaboratable):
self.spec_mem_wmask, self.spec_mem_wmask,
self.spec_mem_wdata self.spec_mem_wdata
] ]
if self.RISCV_FORMAL_CSR_MISA:
output_ports.append(self.spec_csr_misa_rmask)
return input_ports + output_ports return input_ports + output_ports
def elaborate(self, platform): def elaborate(self, platform):
m = Module() m = Module()
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_funct7.eq(self.rvfi_insn[25:32])
m.d.comb += self.insn_funct6.eq(self.rvfi_insn[26:32])
m.d.comb += self.insn_shamt.eq(self.rvfi_insn[20:26])
m.d.comb += self.insn_rs2.eq(self.rvfi_insn[20:25])
m.d.comb += self.insn_rs1.eq(self.rvfi_insn[15:20])
m.d.comb += self.insn_funct3.eq(self.rvfi_insn[12:15])
m.d.comb += self.insn_rd.eq(self.rvfi_insn[7:12])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
# default assignments
m.d.comb += self.spec_valid.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
m.d.comb += self.spec_rs1_addr.eq(0)
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_rd_addr.eq(0)
m.d.comb += self.spec_rd_wdata.eq(0)
m.d.comb += self.spec_pc_wdata.eq(0)
m.d.comb += self.spec_mem_addr.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
return m return m

38
insns/insn_I.py
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@ -1,38 +0,0 @@
from insn import *
class rvfi_insn_I(rvfi_insn):
def __init__(self):
super(rvfi_insn_I, self).__init__()
self.insn_padding = Signal(32)
self.insn_imm = Signal(32)
self.insn_rs1 = Signal(5)
self.insn_funct3 = Signal(3)
self.insn_rd = Signal(5)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
self.ialign16 = Signal(1)
def ports(self):
return super(rvfi_insn_I, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_I, self).elaborate(platform)
# I-type instruction format
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
m.d.comb += self.insn_rs1.eq(self.rvfi_insn[15:20])
m.d.comb += self.insn_funct3.eq(self.rvfi_insn[12:15])
m.d.comb += self.insn_rd.eq(self.rvfi_insn[7:12])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
m.d.comb += self.misa_ok.eq(1)
m.d.comb += self.ialign16.eq(0)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
m.d.comb += self.spec_mem_addr.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
return m

38
insns/insn_I_shift.py
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@ -1,38 +0,0 @@
from insn import *
class rvfi_insn_I_shift(rvfi_insn):
def __init__(self):
super(rvfi_insn_I_shift, self).__init__()
self.insn_padding = Signal(32)
self.insn_funct6 = Signal(7)
self.insn_shamt = Signal(6)
self.insn_rs1 = Signal(5)
self.insn_funct3 = Signal(3)
self.insn_rd = Signal(5)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
def ports(self):
return super(rvfi_insn_I_shift, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_I_shift, self).elaborate(platform)
# I-type instruction format (shift variation)
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_funct6.eq(self.rvfi_insn[26:32])
m.d.comb += self.insn_shamt.eq(self.rvfi_insn[20:26])
m.d.comb += self.insn_rs1.eq(self.rvfi_insn[15:20])
m.d.comb += self.insn_funct3.eq(self.rvfi_insn[12:15])
m.d.comb += self.insn_rd.eq(self.rvfi_insn[7:12])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
m.d.comb += self.misa_ok.eq(1)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
m.d.comb += self.spec_mem_addr.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
return m

37
insns/insn_R.py
View File

@ -1,37 +0,0 @@
from insn import *
class rvfi_insn_R(rvfi_insn):
def __init__(self):
super(rvfi_insn_R, self).__init__()
self.insn_padding = Signal(32)
self.insn_funct7 = Signal(7)
self.insn_rs2 = Signal(5)
self.insn_rs1 = Signal(5)
self.insn_funct3 = Signal(3)
self.insn_rd = Signal(5)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
def ports(self):
return super(rvfi_insn_R, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_R, self).elaborate(platform)
# R-type instruction format
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_funct7.eq(self.rvfi_insn[25:32])
m.d.comb += self.insn_rs2.eq(self.rvfi_insn[20:25])
m.d.comb += self.insn_rs1.eq(self.rvfi_insn[15:20])
m.d.comb += self.insn_funct3.eq(self.rvfi_insn[12:15])
m.d.comb += self.insn_rd.eq(self.rvfi_insn[7:12])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
m.d.comb += self.misa_ok.eq(1)
# default assignments
m.d.comb += self.spec_trap.eq(~self.misa_ok)
m.d.comb += self.spec_mem_addr.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
return m

32
insns/insn_S.py
View File

@ -1,32 +0,0 @@
from insn import *
class rvfi_insn_S(rvfi_insn):
def __init__(self):
super(rvfi_insn_S, self).__init__()
self.insn_padding = Signal(32)
self.insn_imm = Signal(32)
self.insn_rs2 = Signal(5)
self.insn_rs1 = Signal(5)
self.insn_funct3 = Signal(3)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
def ports(self):
return super(rvfi_insn_S, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_S, self).elaborate(platform)
# S-type instruction format
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[7:12], self.rvfi_insn[25:32])))
m.d.comb += self.insn_rs2.eq(self.rvfi_insn[20:25])
m.d.comb += self.insn_rs1.eq(self.rvfi_insn[15:20])
m.d.comb += self.insn_funct3.eq(self.rvfi_insn[12:15])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
m.d.comb += self.misa_ok.eq(1)
# default assignments
m.d.comb += self.spec_rd_addr.eq(0)
m.d.comb += self.spec_rd_wdata.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
return m

38
insns/insn_SB.py
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@ -1,38 +0,0 @@
from insn import *
class rvfi_insn_SB(rvfi_insn):
def __init__(self):
super(rvfi_insn_SB, self).__init__()
self.insn_padding = Signal(32)
self.insn_imm = Signal(32)
self.insn_rs2 = Signal(5)
self.insn_rs1 = Signal(5)
self.insn_funct3 = Signal(3)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
self.ialign16 = Signal(1)
def ports(self):
return super(rvfi_insn_SB, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_SB, self).elaborate(platform)
# SB-type instruction format
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[8:12], self.rvfi_insn[25:31], self.rvfi_insn[7], self.rvfi_insn[31]) << 1))
m.d.comb += self.insn_rs2.eq(self.rvfi_insn[20:25])
m.d.comb += self.insn_rs1.eq(self.rvfi_insn[15:20])
m.d.comb += self.insn_funct3.eq(self.rvfi_insn[12:15])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
m.d.comb += self.misa_ok.eq(1)
m.d.comb += self.ialign16.eq(0)
# default assignments
m.d.comb += self.spec_rd_addr.eq(0)
m.d.comb += self.spec_rd_wdata.eq(0)
m.d.comb += self.spec_mem_addr.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
return m

33
insns/insn_U.py
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from insn import *
class rvfi_insn_U(rvfi_insn):
def __init__(self):
super(rvfi_insn_U, self).__init__()
self.insn_padding = Signal(32)
self.insn_imm = Signal(32)
self.insn_rd = Signal(5)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
def ports(self):
return super(rvfi_insn_U, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_U, self).elaborate(platform)
# U-type instruction format
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_imm.eq(Value.as_signed(self.rvfi_insn[12:32] << 12))
m.d.comb += self.insn_rd.eq(self.rvfi_insn[7:12])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
m.d.comb += self.misa_ok.eq(1)
# Default assignments
m.d.comb += self.spec_rs1_addr.eq(0)
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
m.d.comb += self.spec_mem_addr.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
return m

34
insns/insn_UJ.py
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@ -1,34 +0,0 @@
from insn import *
class rvfi_insn_UJ(rvfi_insn):
def __init__(self):
super(rvfi_insn_UJ, self).__init__()
self.insn_padding = Signal(32)
self.insn_imm = Signal(32)
self.insn_rd = Signal(5)
self.insn_opcode = Signal(7)
self.misa_ok = Signal(1)
self.ialign16 = Signal(1)
def ports(self):
return super(rvfi_insn_UJ, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_UJ, self).elaborate(platform)
# UJ-type instruction format
m.d.comb += self.insn_padding.eq(self.rvfi_insn >> 32)
m.d.comb += self.insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[21:31], self.rvfi_insn[20], self.rvfi_insn[12:20], self.rvfi_insn[31]) << 1))
m.d.comb += self.insn_rd.eq(self.rvfi_insn[7:12])
m.d.comb += self.insn_opcode.eq(self.rvfi_insn[:7])
m.d.comb += self.misa_ok.eq(1)
m.d.comb += self.ialign16.eq(0)
# Default assignments
m.d.comb += self.spec_rs1_addr.eq(0)
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_mem_addr.eq(0)
m.d.comb += self.spec_mem_rmask.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
return m

26
insns/insn_add.py
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@ -1,21 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_add(rvfi_insn_R): """
def __init__(self): ADD instruction
super(rvfi_insn_add, self).__init__() """
def ports(self):
return super(rvfi_insn_add, self).ports() class InsnAdd(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b000, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_add, self).elaborate(platform) m = super().elaborate(platform)
# ADD instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata + self.rvfi_rs2_rdata, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata + self.rvfi_rs2_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_addi.py
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@ -1,20 +1,15 @@
from insn_I import * from insn_rv32i_i_type_arith import *
class rvfi_insn_addi(rvfi_insn_I): """
def __init__(self): ADDI instruction
super(rvfi_insn_addi, self).__init__() """
def ports(self):
return super(rvfi_insn_addi, self).ports() class InsnAddi(InsnRV32IITypeArith):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b000)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_addi, self).elaborate(platform) m = super().elaborate(platform)
# ADDI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata + self.insn_imm, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata + self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

26
insns/insn_and.py
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@ -1,21 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_and(rvfi_insn_R): """
def __init__(self): AND instruction
super(rvfi_insn_and, self).__init__() """
def ports(self):
return super(rvfi_insn_and, self).ports() class InsnAnd(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b111, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_and, self).elaborate(platform) m = super().elaborate(platform)
# AND instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata & self.rvfi_rs2_rdata, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata & self.rvfi_rs2_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b111) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_andi.py
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@ -1,20 +1,15 @@
from insn_I import * from insn_rv32i_i_type_arith import *
class rvfi_insn_andi(rvfi_insn_I): """
def __init__(self): ANDI instruction
super(rvfi_insn_andi, self).__init__() """
def ports(self):
return super(rvfi_insn_andi, self).ports() class InsnAndi(InsnRV32IITypeArith):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b111)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_andi, self).elaborate(platform) m = super().elaborate(platform)
# ANDI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata & self.insn_imm, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata & self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b111) & (self.insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

20
insns/insn_auipc.py
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@ -1,17 +1,15 @@
from insn_U import * from insn_rv32i_u_type import *
class rvfi_insn_auipc(rvfi_insn_U): """
def __init__(self): AUIPC instruction
super(rvfi_insn_auipc, self).__init__() """
def ports(self):
return super(rvfi_insn_auipc, self).ports() class InsnAuipc(InsnRV32IUType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0010111)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_auipc, self).elaborate(platform) m = super().elaborate(platform)
# AUIPC instruction
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == 0b0010111))
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_pc_rdata + self.insn_imm, 0)) m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_pc_rdata + self.insn_imm, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

26
insns/insn_beq.py
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@ -1,21 +1,17 @@
from insn_SB import * from insn_rv32i_sb_type import *
class rvfi_insn_beq(rvfi_insn_SB): """
def __init__(self): BEQ instruction
super(rvfi_insn_beq, self).__init__() """
def ports(self):
return super(rvfi_insn_beq, self).ports() class InsnBeq(InsnRV32ISBType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b000)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_beq, self).elaborate(platform) m = super().elaborate(platform)
# BEQ instruction next_pc = Signal(self.RISCV_FORMAL_XLEN)
cond = Signal(1) m.d.comb += next_pc.eq(Mux(self.rvfi_rs1_rdata == self.rvfi_rs2_rdata, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += cond.eq(self.rvfi_rs1_rdata == self.rvfi_rs2_rdata)
next_pc = Signal(32)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_pc_wdata.eq(next_pc) m.d.comb += self.spec_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok) m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)

26
insns/insn_bge.py
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@ -1,21 +1,17 @@
from insn_SB import * from insn_rv32i_sb_type import *
class rvfi_insn_bge(rvfi_insn_SB): """
def __init__(self): BGE instruction
super(rvfi_insn_bge, self).__init__() """
def ports(self):
return super(rvfi_insn_bge, self).ports() class InsnBge(InsnRV32ISBType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b101)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_bge, self).elaborate(platform) m = super().elaborate(platform)
# BGE instruction next_pc = Signal(self.RISCV_FORMAL_XLEN)
cond = Signal(1) m.d.comb += next_pc.eq(Mux(Value.as_signed(self.rvfi_rs1_rdata) >= Value.as_signed(self.rvfi_rs2_rdata), self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += cond.eq(Value.as_signed(self.rvfi_rs1_rdata) >= Value.as_signed(self.rvfi_rs2_rdata))
next_pc = Signal(32)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b101) & (self.insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_pc_wdata.eq(next_pc) m.d.comb += self.spec_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok) m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)

26
insns/insn_bgeu.py
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@ -1,21 +1,17 @@
from insn_SB import * from insn_rv32i_sb_type import *
class rvfi_insn_bgeu(rvfi_insn_SB): """
def __init__(self): BGEU instruction
super(rvfi_insn_bgeu, self).__init__() """
def ports(self):
return super(rvfi_insn_bgeu, self).ports() class InsnBgeu(InsnRV32ISBType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b111)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_bgeu, self).elaborate(platform) m = super().elaborate(platform)
# BGEU instruction next_pc = Signal(self.RISCV_FORMAL_XLEN)
cond = Signal(1) m.d.comb += next_pc.eq(Mux(self.rvfi_rs1_rdata >= self.rvfi_rs2_rdata, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += cond.eq(self.rvfi_rs1_rdata >= self.rvfi_rs2_rdata)
next_pc = Signal(32)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b111) & (self.insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_pc_wdata.eq(next_pc) m.d.comb += self.spec_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok) m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)

26
insns/insn_blt.py
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from insn_SB import * from insn_rv32i_sb_type import *
class rvfi_insn_blt(rvfi_insn_SB): """
def __init__(self): BLT instruction
super(rvfi_insn_blt, self).__init__() """
def ports(self):
return super(rvfi_insn_blt, self).ports() class InsnBlt(InsnRV32ISBType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b100)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_blt, self).elaborate(platform) m = super().elaborate(platform)
# BLT instruction next_pc = Signal(self.RISCV_FORMAL_XLEN)
cond = Signal(1) m.d.comb += next_pc.eq(Mux(Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(self.rvfi_rs2_rdata), self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += cond.eq(Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(self.rvfi_rs2_rdata))
next_pc = Signal(32)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b100) & (self.insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_pc_wdata.eq(next_pc) m.d.comb += self.spec_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok) m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)

26
insns/insn_bltu.py
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from insn_SB import * from insn_rv32i_sb_type import *
class rvfi_insn_bltu(rvfi_insn_SB): """
def __init__(self): BLTU instruction
super(rvfi_insn_bltu, self).__init__() """
def ports(self):
return super(rvfi_insn_bltu, self).ports() class InsnBltu(InsnRV32ISBType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b110)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_bltu, self).elaborate(platform) m = super().elaborate(platform)
# BLTU instruction next_pc = Signal(self.RISCV_FORMAL_XLEN)
cond = Signal(1) m.d.comb += next_pc.eq(Mux(self.rvfi_rs1_rdata < self.rvfi_rs2_rdata, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += cond.eq(self.rvfi_rs1_rdata < self.rvfi_rs2_rdata)
next_pc = Signal(32)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b110) & (self.insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_pc_wdata.eq(next_pc) m.d.comb += self.spec_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok) m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)

26
insns/insn_bne.py
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@ -1,21 +1,17 @@
from insn_SB import * from insn_rv32i_sb_type import *
class rvfi_insn_bne(rvfi_insn_SB): """
def __init__(self): BNE instruction
super(rvfi_insn_bne, self).__init__() """
def ports(self):
return super(rvfi_insn_bne, self).ports() class InsnBne(InsnRV32ISBType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b001)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_bne, self).elaborate(platform) m = super().elaborate(platform)
# BNE instruction next_pc = Signal(self.RISCV_FORMAL_XLEN)
cond = Signal(1) m.d.comb += next_pc.eq(Mux(self.rvfi_rs1_rdata != self.rvfi_rs2_rdata, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += cond.eq(self.rvfi_rs1_rdata != self.rvfi_rs2_rdata)
next_pc = Signal(32)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + self.insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b001) & (self.insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_pc_wdata.eq(next_pc) m.d.comb += self.spec_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok) m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)

23
insns/insn_div.py
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@ -1,23 +0,0 @@
from insn_R import *
class rvfi_insn_div(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_div, self).__init__()
def ports(self):
return super(rvfi_insn_div, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_div, self).elaborate(platform)
# DIV instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x29bbf66f7f8529ec)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata - self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b100) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

23
insns/insn_divu.py
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@ -1,23 +0,0 @@
from insn_R import *
class rvfi_insn_divu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_divu, self).__init__()
def ports(self):
return super(rvfi_insn_divu, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_divu, self).elaborate(platform)
# DIVU instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x8c629acb10e8fd70)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata - self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b101) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

35
insns/insn_jal.py
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@ -1,16 +1,31 @@
from insn_UJ import * from insn import *
class rvfi_insn_jal(rvfi_insn_UJ): """
def __init__(self): JAL instruction
super(rvfi_insn_jal, self).__init__() """
def ports(self):
return super(rvfi_insn_jal, self).ports() class InsnJal(Insn):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.RISCV_FORMAL_COMPRESSED = RISCV_FORMAL_COMPRESSED
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_jal, self).elaborate(platform) m = super().elaborate(platform)
# JAL instruction m.d.comb += self.insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[21:31], self.rvfi_insn[20], self.rvfi_insn[12:20], self.rvfi_insn[31]) << 1))
next_pc = Signal(32)
m.d.comb += next_pc.eq(self.rvfi_pc_rdata + self.insn_imm) if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(4)
m.d.comb += self.ialign16.eq((self.rvfi_csr_misa_rdata & 4) != 0)
else:
m.d.comb += self.misa_ok.eq(1)
if self.RISCV_FORMAL_COMPRESSED:
m.d.comb += self.ialign16.eq(1)
else:
m.d.comb += self.ialign16.eq(0)
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(self.rvfi_rs1_rdata + self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == 0b1101111)) m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == 0b1101111))
m.d.comb += self.spec_rd_addr.eq(self.insn_rd) m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_pc_rdata + 4, 0)) m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_pc_rdata + 4, 0))

31
insns/insn_jalr.py
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@ -1,15 +1,28 @@
from insn_I import * from insn_rv32i_i_type import *
class rvfi_insn_jalr(rvfi_insn_I): """
def __init__(self): JALR instruction
super(rvfi_insn_jalr, self).__init__() """
def ports(self):
return super(rvfi_insn_jalr, self).ports() class InsnJalr(InsnRV32IIType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.RISCV_FORMAL_COMPRESSED = RISCV_FORMAL_COMPRESSED
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_jalr, self).elaborate(platform) m = super().elaborate(platform)
# JALR instruction if self.RISCV_FORMAL_CSR_MISA:
next_pc = Signal(32) m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(4)
m.d.comb += self.ialign16.eq((self.rvfi_csr_misa_rdata & 4) != 0)
else:
m.d.comb += self.misa_ok.eq(1)
if self.RISCV_FORMAL_COMPRESSED:
m.d.comb += self.ialign16.eq(1)
else:
m.d.comb += self.ialign16.eq(0)
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq((self.rvfi_rs1_rdata + self.insn_imm) & ~1) m.d.comb += next_pc.eq((self.rvfi_rs1_rdata + self.insn_imm) & ~1)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b1100111)) m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b1100111))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1) m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)

30
insns/insn_lb.py
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@ -1,25 +1,9 @@
from insn_I import * from insn_rv32i_i_type_load import *
class rvfi_insn_lb(rvfi_insn_I): """
def __init__(self): LB instruction
super(rvfi_insn_lb, self).__init__() """
def ports(self):
return super(rvfi_insn_lb, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_lb, self).elaborate(platform)
# LB instruction class InsnLb(InsnRV32IITypeLoad):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b000, 1, True)
result = Signal(8)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_rmask.eq((1 << 1) - 1)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Value.as_signed(result), 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

30
insns/insn_lbu.py
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@ -1,25 +1,9 @@
from insn_I import * from insn_rv32i_i_type_load import *
class rvfi_insn_lbu(rvfi_insn_I): """
def __init__(self): LBU instruction
super(rvfi_insn_lbu, self).__init__() """
def ports(self):
return super(rvfi_insn_lbu, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_lbu, self).elaborate(platform)
# LBU instruction class InsnLbu(InsnRV32IITypeLoad):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b100, 1, False)
result = Signal(8)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (self.insn_funct3 == 0b100) & (self.insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_rmask.eq((1 << 1) - 1)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

30
insns/insn_lh.py
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@ -1,25 +1,9 @@
from insn_I import * from insn_rv32i_i_type_load import *
class rvfi_insn_lh(rvfi_insn_I): """
def __init__(self): LH instruction
super(rvfi_insn_lh, self).__init__() """
def ports(self):
return super(rvfi_insn_lh, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_lh, self).elaborate(platform)
# LH instruction class InsnLh(InsnRV32IITypeLoad):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b001, 2, True)
result = Signal(16)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (self.insn_funct3 == 0b001) & (self.insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_rmask.eq((1 << 2) - 1)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Value.as_signed(result), 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

30
insns/insn_lhu.py
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@ -1,25 +1,9 @@
from insn_I import * from insn_rv32i_i_type_load import *
class rvfi_insn_lhu(rvfi_insn_I): """
def __init__(self): LHU instruction
super(rvfi_insn_lhu, self).__init__() """
def ports(self):
return super(rvfi_insn_lhu, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_lhu, self).elaborate(platform)
# LHU instruction class InsnLhu(InsnRV32IITypeLoad):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b101, 2, False)
result = Signal(16)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (self.insn_funct3 == 0b101) & (self.insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_rmask.eq((1 << 2) - 1)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

20
insns/insn_lui.py
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@ -1,17 +1,15 @@
from insn_U import * from insn_rv32i_u_type import *
class rvfi_insn_lui(rvfi_insn_U): """
def __init__(self): LUI instruction
super(rvfi_insn_lui, self).__init__() """
def ports(self):
return super(rvfi_insn_lui, self).ports() class InsnLui(InsnRV32IUType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0110111)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_lui, self).elaborate(platform) m = super().elaborate(platform)
# LUI instruction
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == 0b0110111))
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.insn_imm, 0)) m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.insn_imm, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

30
insns/insn_lw.py
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@ -1,25 +1,9 @@
from insn_I import * from insn_rv32i_i_type_load import *
class rvfi_insn_lw(rvfi_insn_I): """
def __init__(self): LW instruction
super(rvfi_insn_lw, self).__init__() """
def ports(self):
return super(rvfi_insn_lw, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_lw, self).elaborate(platform)
# LW instruction class InsnLw(InsnRV32IITypeLoad):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b010, 4, True)
result = Signal(32)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (self.insn_funct3 == 0b010) & (self.insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_rmask.eq((1 << 4) - 1)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Value.as_signed(result), 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

23
insns/insn_mul.py
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@ -1,23 +0,0 @@
from insn_R import *
class rvfi_insn_mul(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mul, self).__init__()
def ports(self):
return super(rvfi_insn_mul, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_mul, self).elaborate(platform)
# MUL instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x2cdf52a55876063e)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata + self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

23
insns/insn_mulh.py
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@ -1,23 +0,0 @@
from insn_R import *
class rvfi_insn_mulh(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mulh, self).__init__()
def ports(self):
return super(rvfi_insn_mulh, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_mulh, self).elaborate(platform)
# MULH instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x15d01651f6583fb7)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata + self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b001) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

23
insns/insn_mulhsu.py
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@ -1,23 +0,0 @@
from insn_R import *
class rvfi_insn_mulhsu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mulhsu, self).__init__()
def ports(self):
return super(rvfi_insn_mulhsu, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_mulhsu, self).elaborate(platform)
# MULHSU instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xea3969edecfbe137)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata - self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b010) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

23
insns/insn_mulhu.py
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from insn_R import *
class rvfi_insn_mulhu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mulhu, self).__init__()
def ports(self):
return super(rvfi_insn_mulhu, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_mulhu, self).elaborate(platform)
# MULHU instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xd13db50d949ce5e8)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata + self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b011) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

26
insns/insn_or.py
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@ -1,21 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_or(rvfi_insn_R): """
def __init__(self): OR instruction
super(rvfi_insn_or, self).__init__() """
def ports(self):
return super(rvfi_insn_or, self).ports() class InsnOr(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b110, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_or, self).elaborate(platform) m = super().elaborate(platform)
# OR instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata | self.rvfi_rs2_rdata, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata | self.rvfi_rs2_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b110) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_ori.py
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@ -1,20 +1,15 @@
from insn_I import * from insn_rv32i_i_type_arith import *
class rvfi_insn_ori(rvfi_insn_I): """
def __init__(self): ORI instruction
super(rvfi_insn_ori, self).__init__() """
def ports(self):
return super(rvfi_insn_ori, self).ports() class InsnOri(InsnRV32IITypeArith):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b110)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_ori, self).elaborate(platform) m = super().elaborate(platform)
# ORI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata | self.insn_imm, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata | self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b110) & (self.insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

23
insns/insn_rem.py
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from insn_R import *
class rvfi_insn_rem(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_rem, self).__init__()
def ports(self):
return super(rvfi_insn_rem, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_rem, self).elaborate(platform)
# REM instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xf5b7d8538da68fa5)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata - self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b110) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

23
insns/insn_remu.py
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from insn_R import *
class rvfi_insn_remu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_remu, self).__init__()
def ports(self):
return super(rvfi_insn_remu, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_remu, self).elaborate(platform)
# REMU instruction
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xbc4402413138d0e1)
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata - self.rvfi_rs2_rdata) ^ altops_bitmask)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000001) & (self.insn_funct3 == 0b111) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

13
insns/insn_rv32i_i_type.py Normal file
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from insn import *
"""
RV32I I-Type Instruction
"""
class InsnRV32IIType(Insn):
def elaborate(self, platform):
m = super().elaborate(platform)
m.d.comb += self.insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
return m

25
insns/insn_rv32i_i_type_arith.py Normal file
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from insn_rv32i_i_type import *
"""
RV32I I-Type Instruction (Arithmetic Variation)
"""
class InsnRV32IITypeArith(InsnRV32IIType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, funct3):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.funct3 = funct3
def elaborate(self, platform):
m = super().elaborate(platform)
if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(0)
else:
m.d.comb += self.misa_ok.eq(1)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == self.funct3) & (self.insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

48
insns/insn_rv32i_i_type_load.py Normal file
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from insn_rv32i_i_type import *
"""
RV32I I-Type Instruction (Load Variation)
"""
class InsnRV32IITypeLoad(InsnRV32IIType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, funct3, mask_shift, is_signed):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.RISCV_FORMAL_ALIGNED_MEM = RISCV_FORMAL_ALIGNED_MEM
self.funct3 = funct3
self.mask_shift = mask_shift
self.is_signed = is_signed
self.addr = Signal(self.RISCV_FORMAL_XLEN)
self.result = Signal(8 * self.mask_shift)
def elaborate(self, platform):
m = super().elaborate(platform)
if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(0)
else:
m.d.comb += self.misa_ok.eq(1)
if self.RISCV_FORMAL_ALIGNED_MEM:
m.d.comb += self.addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
m.d.comb += self.result.eq(self.rvfi_mem_rdata >> (8 * (self.addr - self.spec_mem_addr)))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == self.funct3) & (self.insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_mem_addr.eq(self.addr & ~(int(self.RISCV_FORMAL_XLEN // 8) - 1))
m.d.comb += self.spec_mem_rmask.eq(((1 << self.mask_shift) - 1) << (self.addr - self.spec_mem_addr))
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Value.as_signed(self.result) if self.is_signed else self.result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(((self.addr & (self.mask_shift - 1)) != 0) | ~self.misa_ok)
else:
m.d.comb += self.addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
m.d.comb += self.result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (self.insn_funct3 == self.funct3) & (self.insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_mem_addr.eq(self.addr)
m.d.comb += self.spec_mem_rmask.eq((1 << self.mask_shift) - 1)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Value.as_signed(self.result) if self.is_signed else self.result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

26
insns/insn_rv32i_i_type_shift.py Normal file
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from insn import *
"""
RV32I I-Type Instruction (Shift Variation)
"""
class InsnRV32IITypeShift(Insn):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, funct6, funct3):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.funct6 = funct6
self.funct3 = funct3
def elaborate(self, platform):
m = super().elaborate(platform)
if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(0)
else:
m.d.comb += self.misa_ok.eq(1)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct6 == self.funct6) & (self.insn_funct3 == self.funct3) & (self.insn_opcode == 0b0010011) & ((~self.insn_shamt[5]) | (self.RISCV_FORMAL_XLEN == 64)))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

28
insns/insn_rv32i_r_type.py Normal file
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from insn import *
"""
RV32I R-Type Instruction
"""
class InsnRV32IRType(Insn):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, funct7, funct3, opcode):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.funct7 = funct7
self.funct3 = funct3
self.opcode = opcode
def elaborate(self, platform):
m = super().elaborate(platform)
if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(0)
else:
m.d.comb += self.misa_ok.eq(1)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == self.funct7) & (self.insn_funct3 == self.funct3) & (self.insn_opcode == self.opcode))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

46
insns/insn_rv32i_s_type.py Normal file
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from insn import *
"""
RV32I S-Type Instruction
"""
class InsnRV32ISType(Insn):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, funct3, mask_shift):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.RISCV_FORMAL_ALIGNED_MEM = RISCV_FORMAL_ALIGNED_MEM
self.funct3 = funct3
self.mask_shift = mask_shift
self.addr = Signal(self.RISCV_FORMAL_XLEN)
def elaborate(self, platform):
m = super().elaborate(platform)
m.d.comb += self.insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[7:12], self.rvfi_insn[25:32])))
if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(0)
else:
m.d.comb += self.misa_ok.eq(1)
if self.RISCV_FORMAL_ALIGNED_MEM:
m.d.comb += self.addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == self.funct3) & (self.insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_mem_addr.eq(self.addr & ~(int(self.RISCV_FORMAL_XLEN // 8) - 1))
m.d.comb += self.spec_mem_wmask.eq(((1 << self.mask_shift) - 1) << (self.addr - self.spec_mem_addr))
m.d.comb += self.spec_mem_wdata.eq(self.rvfi_rs2_rdata << (8 * (self.addr - self.spec_mem_addr)))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(((self.addr & (self.mask_shift - 1)) != 0) | ~self.misa_ok)
else:
m.d.comb += self.addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == self.funct3) & (self.insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_mem_addr.eq(self.addr)
m.d.comb += self.spec_mem_wmask.eq((1 << self.mask_shift) - 1)
m.d.comb += self.spec_mem_wdata.eq(self.rvfi_rs2_rdata)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

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insns/insn_rv32i_sb_type.py Normal file
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from insn import *
"""
RV32I SB-Type Instruction
"""
class InsnRV32ISBType(Insn):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, funct3):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.RISCV_FORMAL_COMPRESSED = RISCV_FORMAL_COMPRESSED
self.funct3 = funct3
def elaborate(self, platform):
m = super().elaborate(platform)
m.d.comb += self.insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[8:12], self.rvfi_insn[25:31], self.rvfi_insn[7], self.rvfi_insn[31]) << 1))
if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(4)
m.d.comb += self.ialign16.eq((self.rvfi_csr_misa_rdata & 4) != 0)
else:
m.d.comb += self.misa_ok.eq(1)
if self.RISCV_FORMAL_COMPRESSED:
m.d.comb += self.ialign16.eq(1)
else:
m.d.comb += self.ialign16.eq(0)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == self.funct3) & (self.insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
return m

26
insns/insn_rv32i_u_type.py Normal file
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from insn import *
"""
RV32I U-Type Instruction
"""
class InsnRV32IUType(Insn):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, opcode):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA)
self.opcode = opcode
def elaborate(self, platform):
m = super().elaborate(platform)
m.d.comb += self.insn_imm.eq(Value.as_signed(self.rvfi_insn[12:32] << 12))
if self.RISCV_FORMAL_CSR_MISA:
m.d.comb += self.misa_ok.eq((self.rvfi_csr_misa_rdata & 0) == 0)
m.d.comb += self.spec_csr_misa_rmask.eq(0)
else:
m.d.comb += self.misa_ok.eq(1)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_opcode == self.opcode))
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m

28
insns/insn_sb.py
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@ -1,23 +1,9 @@
from insn_S import * from insn_rv32i_s_type import *
class rvfi_insn_sb(rvfi_insn_S): """
def __init__(self): SB instruction
super(rvfi_insn_sb, self).__init__() """
def ports(self):
return super(rvfi_insn_sb, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_sb, self).elaborate(platform)
# SB instruction class InsnSb(InsnRV32ISType):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b000, 1)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_wmask.eq((1 << 1) - 1)
m.d.comb += self.spec_mem_wdata.eq(self.rvfi_rs2_rdata)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

28
insns/insn_sh.py
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@ -1,23 +1,9 @@
from insn_S import * from insn_rv32i_s_type import *
class rvfi_insn_sh(rvfi_insn_S): """
def __init__(self): SH instruction
super(rvfi_insn_sh, self).__init__() """
def ports(self):
return super(rvfi_insn_sh, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_sh, self).elaborate(platform)
# SH instruction class InsnSh(InsnRV32ISType):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b001, 2)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b001) & (self.insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_wmask.eq((1 << 2) - 1)
m.d.comb += self.spec_mem_wdata.eq(self.rvfi_rs2_rdata)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

28
insns/insn_sll.py
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@ -1,23 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_sll(rvfi_insn_R): """
def __init__(self): SLL instruction
super(rvfi_insn_sll, self).__init__() """
def ports(self):
return super(rvfi_insn_sll, self).ports() class InsnSll(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b001, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_sll, self).elaborate(platform) m = super().elaborate(platform)
# SLL instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata << Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5]), 0))
shamt = Signal(6)
m.d.comb += shamt.eq(self.rvfi_rs2_rdata[:5])
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata << shamt)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b001) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_slli.py
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@ -1,20 +1,15 @@
from insn_I_shift import * from insn_rv32i_i_type_shift import *
class rvfi_insn_slli(rvfi_insn_I_shift): """
def __init__(self): SLLI instruction
super(rvfi_insn_slli, self).__init__() """
def ports(self):
return super(rvfi_insn_slli, self).ports() class InsnSlli(InsnRV32IITypeShift):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b000000, 0b001)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_slli, self).elaborate(platform) m = super().elaborate(platform)
# SLLI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata << self.insn_shamt, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata << self.insn_shamt)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct6 == 0b000000) & (self.insn_funct3 == 0b001) & (self.insn_opcode == 0b0010011) & (~self.insn_shamt[5]))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

26
insns/insn_slt.py
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@ -1,21 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_slt(rvfi_insn_R): """
def __init__(self): SLT instruction
super(rvfi_insn_slt, self).__init__() """
def ports(self):
return super(rvfi_insn_slt, self).ports() class InsnSlt(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b010, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_slt, self).elaborate(platform) m = super().elaborate(platform)
# SLT instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(self.rvfi_rs2_rdata), 0))
result = Signal(32)
m.d.comb += result.eq(Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(self.rvfi_rs2_rdata))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b010) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_slti.py
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@ -1,20 +1,15 @@
from insn_I import * from insn_rv32i_i_type_arith import *
class rvfi_insn_slti(rvfi_insn_I): """
def __init__(self): SLTI instruction
super(rvfi_insn_slti, self).__init__() """
def ports(self):
return super(rvfi_insn_slti, self).ports() class InsnSlti(InsnRV32IITypeArith):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b010)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_slti, self).elaborate(platform) m = super().elaborate(platform)
# SLTI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(self.insn_imm), 0))
result = Signal(32)
m.d.comb += result.eq(Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(self.insn_imm))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b010) & (self.insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_sltiu.py
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@ -1,20 +1,15 @@
from insn_I import * from insn_rv32i_i_type_arith import *
class rvfi_insn_sltiu(rvfi_insn_I): """
def __init__(self): SLTIU instruction
super(rvfi_insn_sltiu, self).__init__() """
def ports(self):
return super(rvfi_insn_sltiu, self).ports() class InsnSltiu(InsnRV32IITypeArith):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_sltiu, self).elaborate(platform) m = super().elaborate(platform)
# SLTIU instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata < self.insn_imm, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata < self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b011) & (self.insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

26
insns/insn_sltu.py
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@ -1,21 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_sltu(rvfi_insn_R): """
def __init__(self): SLTU instruction
super(rvfi_insn_sltu, self).__init__() """
def ports(self):
return super(rvfi_insn_sltu, self).ports() class InsnSltu(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b011, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_sltu, self).elaborate(platform) m = super().elaborate(platform)
# SLTU instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata < self.rvfi_rs2_rdata, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata < self.rvfi_rs2_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b011) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

28
insns/insn_sra.py
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@ -1,23 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_sra(rvfi_insn_R): """
def __init__(self): SRA instruction
super(rvfi_insn_sra, self).__init__() """
def ports(self):
return super(rvfi_insn_sra, self).ports() class InsnSra(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0100000, 0b101, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_sra, self).elaborate(platform) m = super().elaborate(platform)
# SRA instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, (Value.as_signed(self.rvfi_rs1_rdata) >> Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5])) | (-(Value.as_signed(self.rvfi_rs1_rdata) < 0) << (self.RISCV_FORMAL_XLEN - Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5]))), 0)) # https://stackoverflow.com/a/25207042
shamt = Signal(6)
m.d.comb += shamt.eq(self.rvfi_rs2_rdata[:5])
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata >> shamt) | (-(self.rvfi_rs1_rdata < 0) << (32 - shamt))) # https://stackoverflow.com/a/25207042
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0100000) & (self.insn_funct3 == 0b101) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_srai.py
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from insn_I_shift import * from insn_rv32i_i_type_shift import *
class rvfi_insn_srai(rvfi_insn_I_shift): """
def __init__(self): SRAI instruction
super(rvfi_insn_srai, self).__init__() """
def ports(self):
return super(rvfi_insn_srai, self).ports() class InsnSrai(InsnRV32IITypeShift):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b010000, 0b101)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_srai, self).elaborate(platform) m = super().elaborate(platform)
# SRAI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, (Value.as_signed(self.rvfi_rs1_rdata) >> self.insn_shamt) | (-(Value.as_signed(self.rvfi_rs1_rdata) < 0) << (self.RISCV_FORMAL_XLEN - self.insn_shamt)), 0))
result = Signal(32)
m.d.comb += result.eq((self.rvfi_rs1_rdata >> self.insn_shamt) | (-(self.rvfi_rs1_rdata < 0) << (32 - self.insn_shamt))) # https://stackoverflow.com/a/25207042
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct6 == 0b010000) & (self.insn_funct3 == 0b101) & (self.insn_opcode == 0b0010011) & (~self.insn_shamt[5]))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

28
insns/insn_srl.py
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from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_srl(rvfi_insn_R): """
def __init__(self): SRL instruction
super(rvfi_insn_srl, self).__init__() """
def ports(self):
return super(rvfi_insn_srl, self).ports() class InsnSrl(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b100, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_srl, self).elaborate(platform) m = super().elaborate(platform)
# SRL instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata >> Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5]), 0))
shamt = Signal(6)
m.d.comb += shamt.eq(self.rvfi_rs2_rdata[:5])
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata >> shamt)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b101) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_srli.py
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from insn_I_shift import * from insn_rv32i_i_type_shift import *
class rvfi_insn_srli(rvfi_insn_I_shift): """
def __init__(self): SRLI instruction
super(rvfi_insn_srli, self).__init__() """
def ports(self):
return super(rvfi_insn_srli, self).ports() class InsnSrli(InsnRV32IITypeShift):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b000000, 0b101)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_srli, self).elaborate(platform) m = super().elaborate(platform)
# SRLI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata >> self.insn_shamt, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata >> self.insn_shamt)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct6 == 0b000000) & (self.insn_funct3 == 0b101) & (self.insn_opcode == 0b0010011) & (~self.insn_shamt[5]))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

26
insns/insn_sub.py
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from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_sub(rvfi_insn_R): """
def __init__(self): SUB instruction
super(rvfi_insn_sub, self).__init__() """
def ports(self):
return super(rvfi_insn_sub, self).ports() class InsnSub(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0100000, 0b000, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_sub, self).elaborate(platform) m = super().elaborate(platform)
# SUB instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata - self.rvfi_rs2_rdata, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata - self.rvfi_rs2_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0100000) & (self.insn_funct3 == 0b000) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

28
insns/insn_sw.py
View File

@ -1,23 +1,9 @@
from insn_S import * from insn_rv32i_s_type import *
class rvfi_insn_sw(rvfi_insn_S): """
def __init__(self): SW instruction
super(rvfi_insn_sw, self).__init__() """
def ports(self):
return super(rvfi_insn_sw, self).ports()
def elaborate(self, platform):
m = super(rvfi_insn_sw, self).elaborate(platform)
# SW instruction class InsnSw(InsnRV32ISType):
addr = Signal(32) def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM):
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm) super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_ALIGNED_MEM, 0b010, 4)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b010) & (self.insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_mem_addr.eq(addr)
m.d.comb += self.spec_mem_wmask.eq((1 << 4) - 1)
m.d.comb += self.spec_mem_wdata.eq(self.rvfi_rs2_rdata)
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

11
insns/insn_types.md
View File

@ -1,11 +0,0 @@
# RV32IM Instruction Types
| Instruction type | Instructions |
| --- | --- |
| U-type | lui, auipc |
| UJ-type | jal |
| I-type | jalr, lb, lh, lw, lbu, lhu, addi, slti, sltiu, xori, ori, andi |
| SB-type | beq, bne, blt, bge, bltu, bgeu |
| S-type | sb, sh, sw |
| I-type (shift variation) | slli, srli, srai |
| R-type | add, sub, sll, slt, sltu, xor, srl, sra, or, and, mul, mulh, mulhsu, mulhu, div, divu, rem, remu |

26
insns/insn_xor.py
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@ -1,21 +1,15 @@
from insn_R import * from insn_rv32i_r_type import *
class rvfi_insn_xor(rvfi_insn_R): """
def __init__(self): XOR instruction
super(rvfi_insn_xor, self).__init__() """
def ports(self):
return super(rvfi_insn_xor, self).ports() class InsnXor(InsnRV32IRType):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b0000000, 0b100, 0b0110011)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_xor, self).elaborate(platform) m = super().elaborate(platform)
# XOR instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata ^ self.rvfi_rs2_rdata, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata ^ self.rvfi_rs2_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct7 == 0b0000000) & (self.insn_funct3 == 0b100) & (self.insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(self.insn_rs2)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

25
insns/insn_xori.py
View File

@ -1,20 +1,15 @@
from insn_I import * from insn_rv32i_i_type_arith import *
class rvfi_insn_xori(rvfi_insn_I): """
def __init__(self): XORI instruction
super(rvfi_insn_xori, self).__init__() """
def ports(self):
return super(rvfi_insn_xori, self).ports() class InsnXori(InsnRV32IITypeArith):
def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA):
super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, 0b100)
def elaborate(self, platform): def elaborate(self, platform):
m = super(rvfi_insn_xori, self).elaborate(platform) m = super().elaborate(platform)
# XORI instruction m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_rs1_rdata ^ self.insn_imm, 0))
result = Signal(32)
m.d.comb += result.eq(self.rvfi_rs1_rdata ^ self.insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~self.insn_padding) & (self.insn_funct3 == 0b100) & (self.insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(self.insn_rs1)
m.d.comb += self.spec_rd_addr.eq(self.insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, result, 0))
m.d.comb += self.spec_pc_wdata.eq(self.rvfi_pc_rdata + 4)
return m return m

1228
insns/isa_rv32i.py
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File diff suppressed because it is too large Load Diff

37
insns/isa_rv32i.txt
View File

@ -1,37 +0,0 @@
lui
auipc
jal
jalr
beq
bne
blt
bge
bltu
bgeu
lb
lh
lw
lbu
lhu
sb
sh
sw
addi
slti
sltiu
xori
ori
andi
slli
srli
srai
add
sub
sll
slt
sltu
xor
srl
sra
or
and

107
insns/isa_rv32i_gen.py
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@ -1,107 +0,0 @@
with open('isa_rv32i.py', 'w') as isa_rv32i:
def fprint(strng):
print(strng, file=isa_rv32i)
fprint("# Generated by isa_rv32i_gen.py")
fprint("from nmigen import *")
with open('isa_rv32i.txt', 'r') as isa_rv32i_txt_file:
isa_rv32i_insns = isa_rv32i_txt_file.read().split('\n')[:-1]
for isa_rv32i_insn in isa_rv32i_insns:
fprint("from insn_%s import *" % isa_rv32i_insn)
fprint("")
fprint("class rvfi_isa_rv32i(Elaboratable):")
fprint(" def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):")
fprint(" self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN")
fprint(" self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN")
fprint(" self.rvfi_valid = Signal(1)")
fprint(" self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)")
fprint(" self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint("")
fprint(" self.spec_valid = Signal(1)")
fprint(" self.spec_trap = Signal(1)")
fprint(" self.spec_rs1_addr = Signal(5)")
fprint(" self.spec_rs2_addr = Signal(5)")
fprint(" self.spec_rd_addr = Signal(5)")
fprint(" self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))")
fprint(" self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))")
fprint(" self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" def ports(self):")
fprint(" input_ports = [")
fprint(" self.rvfi_valid,")
fprint(" self.rvfi_insn,")
fprint(" self.rvfi_pc_rdata,")
fprint(" self.rvfi_rs1_rdata,")
fprint(" self.rvfi_rs2_rdata,")
fprint(" self.rvfi_mem_rdata")
fprint(" ]")
fprint(" output_ports = [")
fprint(" self.spec_valid,")
fprint(" self.spec_trap,")
fprint(" self.spec_rs1_addr,")
fprint(" self.spec_rs2_addr,")
fprint(" self.spec_rd_addr,")
fprint(" self.spec_rd_wdata,")
fprint(" self.spec_pc_wdata,")
fprint(" self.spec_mem_addr,")
fprint(" self.spec_mem_rmask,")
fprint(" self.spec_mem_wmask,")
fprint(" self.spec_mem_wdata")
fprint(" ]")
fprint(" return input_ports + output_ports")
fprint(" def elaborate(self, platform):")
fprint(" m = Module()")
fprint("")
for isa_rv32i_insn in isa_rv32i_insns:
fprint(" spec_insn_%s_valid = Signal(1)" % isa_rv32i_insn)
fprint(" spec_insn_%s_trap = Signal(1)" % isa_rv32i_insn)
fprint(" spec_insn_%s_rs1_addr = Signal(5)" % isa_rv32i_insn)
fprint(" spec_insn_%s_rs2_addr = Signal(5)" % isa_rv32i_insn)
fprint(" spec_insn_%s_rd_addr = Signal(5)" % isa_rv32i_insn)
fprint(" spec_insn_%s_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32i_insn)
fprint(" spec_insn_%s_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32i_insn)
fprint(" spec_insn_%s_mem_addr = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32i_insn)
fprint(" spec_insn_%s_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))" % isa_rv32i_insn)
fprint(" spec_insn_%s_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))" % isa_rv32i_insn)
fprint(" spec_insn_%s_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32i_insn)
fprint(" m.submodules.insn_%s = insn_%s = rvfi_insn_%s()" % (isa_rv32i_insn, isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += insn_%s.rvfi_valid.eq(self.rvfi_valid)" % isa_rv32i_insn)
fprint(" m.d.comb += insn_%s.rvfi_insn.eq(self.rvfi_insn)" % isa_rv32i_insn)
fprint(" m.d.comb += insn_%s.rvfi_pc_rdata.eq(self.rvfi_pc_rdata)" % isa_rv32i_insn)
fprint(" m.d.comb += insn_%s.rvfi_rs1_rdata.eq(self.rvfi_rs1_rdata)" % isa_rv32i_insn)
fprint(" m.d.comb += insn_%s.rvfi_rs2_rdata.eq(self.rvfi_rs2_rdata)" % isa_rv32i_insn)
fprint(" m.d.comb += insn_%s.rvfi_mem_rdata.eq(self.rvfi_mem_rdata)" % isa_rv32i_insn)
fprint(" m.d.comb += spec_insn_%s_valid.eq(insn_%s.spec_valid)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_trap.eq(insn_%s.spec_trap)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_rs1_addr.eq(insn_%s.spec_rs1_addr)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_rs2_addr.eq(insn_%s.spec_rs2_addr)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_rd_addr.eq(insn_%s.spec_rd_addr)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_rd_wdata.eq(insn_%s.spec_rd_wdata)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_pc_wdata.eq(insn_%s.spec_pc_wdata)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_mem_addr.eq(insn_%s.spec_mem_addr)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_mem_rmask.eq(insn_%s.spec_mem_rmask)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_mem_wmask.eq(insn_%s.spec_mem_wmask)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint(" m.d.comb += spec_insn_%s_mem_wdata.eq(insn_%s.spec_mem_wdata)" % (isa_rv32i_insn, isa_rv32i_insn))
fprint("")
def gen_spec(strng):
result = "0"
for isa_rv32i_insn in isa_rv32i_insns:
result = "Mux(spec_insn_%s_valid, spec_insn_%s_%s, %s)" % (isa_rv32i_insn, isa_rv32i_insn, strng, result)
fprint(" m.d.comb += self.spec_%s.eq(%s)" % (strng, result))
gen_spec("valid")
gen_spec("trap")
gen_spec("rs1_addr")
gen_spec("rs2_addr")
gen_spec("rd_addr")
gen_spec("rd_wdata")
gen_spec("pc_wdata")
gen_spec("mem_addr")
gen_spec("mem_rmask")
gen_spec("mem_wmask")
gen_spec("mem_wdata")
fprint("")
fprint(" return m")

1459
insns/isa_rv32im.py
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File diff suppressed because it is too large Load Diff

45
insns/isa_rv32im.txt
View File

@ -1,45 +0,0 @@
lui
auipc
jal
jalr
beq
bne
blt
bge
bltu
bgeu
lb
lh
lw
lbu
lhu
sb
sh
sw
addi
slti
sltiu
xori
ori
andi
slli
srli
srai
add
sub
sll
slt
sltu
xor
srl
sra
or
and
mul
mulh
mulhsu
mulhu
div
divu
rem
remu

107
insns/isa_rv32im_gen.py
View File

@ -1,107 +0,0 @@
with open('isa_rv32im.py', 'w') as isa_rv32im:
def fprint(strng):
print(strng, file=isa_rv32im)
fprint("# Generated by isa_rv32im_gen.py")
fprint("from nmigen import *")
with open('isa_rv32im.txt', 'r') as isa_rv32im_txt_file:
isa_rv32im_insns = isa_rv32im_txt_file.read().split('\n')[:-1]
for isa_rv32im_insn in isa_rv32im_insns:
fprint("from insn_%s import *" % isa_rv32im_insn)
fprint("")
fprint("class rvfi_isa_rv32im(Elaboratable):")
fprint(" def __init__(self, RISCV_FORMAL_ILEN=32, RISCV_FORMAL_XLEN=32):")
fprint(" self.RISCV_FORMAL_ILEN = RISCV_FORMAL_ILEN")
fprint(" self.RISCV_FORMAL_XLEN = RISCV_FORMAL_XLEN")
fprint(" self.rvfi_valid = Signal(1)")
fprint(" self.rvfi_insn = Signal(self.RISCV_FORMAL_ILEN)")
fprint(" self.rvfi_pc_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.rvfi_rs1_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.rvfi_rs2_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.rvfi_mem_rdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint("")
fprint(" self.spec_valid = Signal(1)")
fprint(" self.spec_trap = Signal(1)")
fprint(" self.spec_rs1_addr = Signal(5)")
fprint(" self.spec_rs2_addr = Signal(5)")
fprint(" self.spec_rd_addr = Signal(5)")
fprint(" self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))")
fprint(" self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))")
fprint(" self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)")
fprint(" def ports(self):")
fprint(" input_ports = [")
fprint(" self.rvfi_valid,")
fprint(" self.rvfi_insn,")
fprint(" self.rvfi_pc_rdata,")
fprint(" self.rvfi_rs1_rdata,")
fprint(" self.rvfi_rs2_rdata,")
fprint(" self.rvfi_mem_rdata")
fprint(" ]")
fprint(" output_ports = [")
fprint(" self.spec_valid,")
fprint(" self.spec_trap,")
fprint(" self.spec_rs1_addr,")
fprint(" self.spec_rs2_addr,")
fprint(" self.spec_rd_addr,")
fprint(" self.spec_rd_wdata,")
fprint(" self.spec_pc_wdata,")
fprint(" self.spec_mem_addr,")
fprint(" self.spec_mem_rmask,")
fprint(" self.spec_mem_wmask,")
fprint(" self.spec_mem_wdata")
fprint(" ]")
fprint(" return input_ports + output_ports")
fprint(" def elaborate(self, platform):")
fprint(" m = Module()")
fprint("")
for isa_rv32im_insn in isa_rv32im_insns:
fprint(" spec_insn_%s_valid = Signal(1)" % isa_rv32im_insn)
fprint(" spec_insn_%s_trap = Signal(1)" % isa_rv32im_insn)
fprint(" spec_insn_%s_rs1_addr = Signal(5)" % isa_rv32im_insn)
fprint(" spec_insn_%s_rs2_addr = Signal(5)" % isa_rv32im_insn)
fprint(" spec_insn_%s_rd_addr = Signal(5)" % isa_rv32im_insn)
fprint(" spec_insn_%s_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32im_insn)
fprint(" spec_insn_%s_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32im_insn)
fprint(" spec_insn_%s_mem_addr = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32im_insn)
fprint(" spec_insn_%s_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))" % isa_rv32im_insn)
fprint(" spec_insn_%s_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))" % isa_rv32im_insn)
fprint(" spec_insn_%s_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)" % isa_rv32im_insn)
fprint(" m.submodules.insn_%s = insn_%s = rvfi_insn_%s()" % (isa_rv32im_insn, isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += insn_%s.rvfi_valid.eq(self.rvfi_valid)" % isa_rv32im_insn)
fprint(" m.d.comb += insn_%s.rvfi_insn.eq(self.rvfi_insn)" % isa_rv32im_insn)
fprint(" m.d.comb += insn_%s.rvfi_pc_rdata.eq(self.rvfi_pc_rdata)" % isa_rv32im_insn)
fprint(" m.d.comb += insn_%s.rvfi_rs1_rdata.eq(self.rvfi_rs1_rdata)" % isa_rv32im_insn)
fprint(" m.d.comb += insn_%s.rvfi_rs2_rdata.eq(self.rvfi_rs2_rdata)" % isa_rv32im_insn)
fprint(" m.d.comb += insn_%s.rvfi_mem_rdata.eq(self.rvfi_mem_rdata)" % isa_rv32im_insn)
fprint(" m.d.comb += spec_insn_%s_valid.eq(insn_%s.spec_valid)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_trap.eq(insn_%s.spec_trap)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_rs1_addr.eq(insn_%s.spec_rs1_addr)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_rs2_addr.eq(insn_%s.spec_rs2_addr)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_rd_addr.eq(insn_%s.spec_rd_addr)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_rd_wdata.eq(insn_%s.spec_rd_wdata)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_pc_wdata.eq(insn_%s.spec_pc_wdata)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_mem_addr.eq(insn_%s.spec_mem_addr)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_mem_rmask.eq(insn_%s.spec_mem_rmask)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_mem_wmask.eq(insn_%s.spec_mem_wmask)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint(" m.d.comb += spec_insn_%s_mem_wdata.eq(insn_%s.spec_mem_wdata)" % (isa_rv32im_insn, isa_rv32im_insn))
fprint("")
def gen_spec(strng):
result = "0"
for isa_rv32im_insn in isa_rv32im_insns:
result = "Mux(spec_insn_%s_valid, spec_insn_%s_%s, %s)" % (isa_rv32im_insn, isa_rv32im_insn, strng, result)
fprint(" m.d.comb += self.spec_%s.eq(%s)" % (strng, result))
gen_spec("valid")
gen_spec("trap")
gen_spec("rs1_addr")
gen_spec("rs2_addr")
gen_spec("rd_addr")
gen_spec("rd_wdata")
gen_spec("pc_wdata")
gen_spec("mem_addr")
gen_spec("mem_rmask")
gen_spec("mem_wmask")
gen_spec("mem_wdata")
fprint("")
fprint(" return m")