M-Labs
/
riscv-formal-nmigen
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge pull request 'Refactor supported instructions to improve code reuse' (#1) from feature/refactor-insns into master 

Merging since the current state of `insns/` is a clear improvement over the previous state in terms of maintainability and code duplication, though further refactoring is required which will happen in the next pull request.
This commit is contained in:
dsleung 2020-08-06 09:47:30 +08:00
parent 5a78e7aba0 7c60451bfa
commit 1d315b4735
56 changed files with 859 additions and 3404 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@ -10,7 +10,7 @@ A port of [riscv-formal](https://github.com/SymbioticEDA/riscv-formal) to nMigen
TODO
## Support
## 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.

28
insns/README.md Normal file
View File

@ -0,0 +1,28 @@
# 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\*.
| 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 |
\* 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.
## Caveats
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:
| Parameter from riscv-formal | Fixed value in riscv-formal-nmigen |
| --- | --- |
| `RISCV_FORMAL_ILEN` | 32 |
| `RISCV_FORMAL_XLEN` | 32 |
| `RISCV_FORMAL_CSR_MISA` | undefined |
| `RISCV_FORMAL_COMPRESSED` | undefined |
| `RISCV_FORMAL_ALIGNED_MEM` | undefined |
| `RISCV_FORMAL_ALTOPS` | defined |

51
insns/insn.py Normal file
View File

@ -0,0 +1,51 @@
from nmigen import *
class rvfi_insn(Elaboratable):
def __init__(self):
# Input ports
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
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(32)
self.spec_pc_wdata = Signal(32)
self.spec_mem_addr = Signal(32)
self.spec_mem_rmask = Signal(4)
self.spec_mem_wmask = Signal(4)
self.spec_mem_wdata = Signal(32)
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
def elaborate(self, platform):
m = Module()
return m

38
insns/insn_I.py Normal file
View File

@ -0,0 +1,38 @@
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 Normal file
View File

@ -0,0 +1,38 @@
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 Normal file
View File

@ -0,0 +1,37 @@
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 Normal file
View File

@ -0,0 +1,32 @@
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 Normal file
View File

@ -0,0 +1,38 @@
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 Normal file
View File

@ -0,0 +1,33 @@
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 Normal file
View File

@ -0,0 +1,34 @@
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

87
insns/insn_add.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_R import *
class rvfi_insn_add(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_add(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_add, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_add, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_add, self).elaborate(platform)
# ADD instruction
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b000) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

86
insns/insn_addi.py
View File

@ -1,84 +1,20 @@
from nmigen import *
from insn_I import *
class rvfi_insn_addi(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_addi(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_addi, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_addi, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_addi, self).elaborate(platform)
# ADDI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(self.rvfi_rs1_rdata + insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b000) & (insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

87
insns/insn_and.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_R import *
class rvfi_insn_and(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_and(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_and, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_and, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_and, self).elaborate(platform)
# AND instruction
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b111) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

86
insns/insn_andi.py
View File

@ -1,84 +1,20 @@
from nmigen import *
from insn_I import *
class rvfi_insn_andi(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_andi(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_andi, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_andi, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_andi, self).elaborate(platform)
# ANDI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(self.rvfi_rs1_rdata & insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b111) & (insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

79
insns/insn_auipc.py
View File

@ -1,78 +1,17 @@
from nmigen import *
from insn_U import *
class rvfi_insn_auipc(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_auipc(rvfi_insn_U):
def __init__(self):
super(rvfi_insn_auipc, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_auipc, self).ports()
def elaborate(self, platform):
m = Module()
# U-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[12:32] << 12))
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_auipc, self).elaborate(platform)
# AUIPC instruction
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_opcode == 0b0010111))
m.d.comb += self.spec_rd_addr.eq(insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, self.rvfi_pc_rdata + insn_imm, 0))
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_pc_wdata.eq(self.rvfi_pc_rdata + 4)
# 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(~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

90
insns/insn_beq.py
View File

@ -1,88 +1,22 @@
from nmigen import *
from insn_SB import *
class rvfi_insn_beq(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_beq(rvfi_insn_SB):
def __init__(self):
super(rvfi_insn_beq, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_beq, self).ports()
def elaborate(self, platform):
m = Module()
# SB-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += 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))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_beq, self).elaborate(platform)
# BEQ instruction
cond = Signal(1)
m.d.comb += cond.eq(self.rvfi_rs1_rdata == self.rvfi_rs2_rdata)
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b000) & (insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
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_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

90
insns/insn_bge.py
View File

@ -1,88 +1,22 @@
from nmigen import *
from insn_SB import *
class rvfi_insn_bge(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_bge(rvfi_insn_SB):
def __init__(self):
super(rvfi_insn_bge, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_bge, self).ports()
def elaborate(self, platform):
m = Module()
# SB-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += 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))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_bge, self).elaborate(platform)
# BGE instruction
cond = Signal(1)
m.d.comb += cond.eq(Value.as_signed(self.rvfi_rs1_rdata) >= Value.as_signed(self.rvfi_rs2_rdata))
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b101) & (insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
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_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

90
insns/insn_bgeu.py
View File

@ -1,88 +1,22 @@
from nmigen import *
from insn_SB import *
class rvfi_insn_bgeu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_bgeu(rvfi_insn_SB):
def __init__(self):
super(rvfi_insn_bgeu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_bgeu, self).ports()
def elaborate(self, platform):
m = Module()
# SB-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += 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))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_bgeu, self).elaborate(platform)
# BGEU instruction
cond = Signal(1)
m.d.comb += cond.eq(self.rvfi_rs1_rdata >= self.rvfi_rs2_rdata)
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b111) & (insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
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_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

90
insns/insn_blt.py
View File

@ -1,88 +1,22 @@
from nmigen import *
from insn_SB import *
class rvfi_insn_blt(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_blt(rvfi_insn_SB):
def __init__(self):
super(rvfi_insn_blt, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_blt, self).ports()
def elaborate(self, platform):
m = Module()
# SB-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += 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))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_blt, self).elaborate(platform)
# BLT instruction
cond = Signal(1)
m.d.comb += cond.eq(Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(self.rvfi_rs2_rdata))
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b100) & (insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
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_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

90
insns/insn_bltu.py
View File

@ -1,88 +1,22 @@
from nmigen import *
from insn_SB import *
class rvfi_insn_bltu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_bltu(rvfi_insn_SB):
def __init__(self):
super(rvfi_insn_bltu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_bltu, self).ports()
def elaborate(self, platform):
m = Module()
# SB-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += 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))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_bltu, self).elaborate(platform)
# BLTU instruction
cond = Signal(1)
m.d.comb += cond.eq(self.rvfi_rs1_rdata < self.rvfi_rs2_rdata)
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b110) & (insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
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_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

90
insns/insn_bne.py
View File

@ -1,88 +1,22 @@
from nmigen import *
from insn_SB import *
class rvfi_insn_bne(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_bne(rvfi_insn_SB):
def __init__(self):
super(rvfi_insn_bne, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_bne, self).ports()
def elaborate(self, platform):
m = Module()
# SB-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += 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))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_bne, self).elaborate(platform)
# BNE instruction
cond = Signal(1)
m.d.comb += cond.eq(self.rvfi_rs1_rdata != self.rvfi_rs2_rdata)
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(Mux(cond, self.rvfi_pc_rdata + insn_imm, self.rvfi_pc_rdata + 4))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b001) & (insn_opcode == 0b1100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
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_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

89
insns/insn_div.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_div(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_div(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_div, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_div, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_div, self).elaborate(platform)
# DIV instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x29bbf66f7f8529ec)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b100) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

89
insns/insn_divu.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_divu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_divu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_divu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_divu, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_divu, self).elaborate(platform)
# DIVU instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x8c629acb10e8fd70)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b101) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

84
insns/insn_jal.py
View File

@ -1,82 +1,20 @@
from nmigen import *
from insn_UJ import *
class rvfi_insn_jal(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_jal(rvfi_insn_UJ):
def __init__(self):
super(rvfi_insn_jal, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_jal, self).ports()
def elaborate(self, platform):
m = Module()
# UJ-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += 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))
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_jal, self).elaborate(platform)
# JAL instruction
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq(self.rvfi_pc_rdata + insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_opcode == 0b1101111))
m.d.comb += self.spec_rd_addr.eq(insn_rd)
next_pc = Signal(32)
m.d.comb += next_pc.eq(self.rvfi_pc_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_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_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

89
insns/insn_jalr.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_I import *
class rvfi_insn_jalr(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_jalr(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_jalr, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_jalr, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
ialign16 = Signal(1)
m.d.comb += ialign16.eq(0)
m = super(rvfi_insn_jalr, self).elaborate(platform)
# JALR instruction
next_pc = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += next_pc.eq((self.rvfi_rs1_rdata + insn_imm) & ~Const(1, shape=self.RISCV_FORMAL_XLEN))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b000) & (insn_opcode == 0b1100111))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
next_pc = Signal(32)
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_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, self.rvfi_pc_rdata + 4, 0))
m.d.comb += self.spec_pc_wdata.eq(next_pc)
m.d.comb += self.spec_trap.eq(Mux(ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~misa_ok)
# default assignments
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)
m.d.comb += self.spec_trap.eq(Mux(self.ialign16, next_pc[0] != 0, next_pc[:2] != 0) | ~self.misa_ok)
return m

85
insns/insn_lb.py
View File

@ -1,86 +1,25 @@
from nmigen import *
from insn_I import *
class rvfi_insn_lb(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_lb(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_lb, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_lb, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_lb, self).elaborate(platform)
# LB instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
addr = Signal(32)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
result = Signal(8)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (insn_funct3 == 0b000) & (insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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(~misa_ok)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

85
insns/insn_lbu.py
View File

@ -1,86 +1,25 @@
from nmigen import *
from insn_I import *
class rvfi_insn_lbu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_lbu(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_lbu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_lbu, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_lbu, self).elaborate(platform)
# LBU instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
addr = Signal(32)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
result = Signal(8)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (insn_funct3 == 0b100) & (insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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(~misa_ok)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

85
insns/insn_lh.py
View File

@ -1,86 +1,25 @@
from nmigen import *
from insn_I import *
class rvfi_insn_lh(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_lh(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_lh, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_lh, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_lh, self).elaborate(platform)
# LH instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
addr = Signal(32)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
result = Signal(16)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (insn_funct3 == 0b001) & (insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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(~misa_ok)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

85
insns/insn_lhu.py
View File

@ -1,86 +1,25 @@
from nmigen import *
from insn_I import *
class rvfi_insn_lhu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_lhu(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_lhu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_lhu, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_lhu, self).elaborate(platform)
# LHU instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
addr = Signal(32)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
result = Signal(16)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (insn_funct3 == 0b101) & (insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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(~misa_ok)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

79
insns/insn_lui.py
View File

@ -1,78 +1,17 @@
from nmigen import *
from insn_U import *
class rvfi_insn_lui(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_lui(rvfi_insn_U):
def __init__(self):
super(rvfi_insn_lui, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_lui, self).ports()
def elaborate(self, platform):
m = Module()
# U-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[12:32] << 12))
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_lui, self).elaborate(platform)
# LUI instruction
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_opcode == 0b0110111))
m.d.comb += self.spec_rd_addr.eq(insn_rd)
m.d.comb += self.spec_rd_wdata.eq(Mux(self.spec_rd_addr, insn_imm, 0))
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_pc_wdata.eq(self.rvfi_pc_rdata + 4)
# 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(~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

85
insns/insn_lw.py
View File

@ -1,86 +1,25 @@
from nmigen import *
from insn_I import *
class rvfi_insn_lw(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_lw(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_lw, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_lw, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_lw, self).elaborate(platform)
# LW instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
addr = Signal(32)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + self.insn_imm)
result = Signal(32)
m.d.comb += result.eq(self.rvfi_mem_rdata)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (insn_funct3 == 0b010) & (insn_opcode == 0b0000011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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(~misa_ok)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_mem_wmask.eq(0)
m.d.comb += self.spec_mem_wdata.eq(0)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

89
insns/insn_mul.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_mul(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_mul(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mul, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_mul, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_mul, self).elaborate(platform)
# MUL instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x2cdf52a55876063e)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b000) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

89
insns/insn_mulh.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_mulh(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_mulh(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mulh, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_mulh, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_mulh, self).elaborate(platform)
# MULH instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0x15d01651f6583fb7)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b001) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

89
insns/insn_mulhsu.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_mulhsu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_mulhsu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mulhsu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_mulhsu, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_mulhsu, self).elaborate(platform)
# MULHSU instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xea3969edecfbe137)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b010) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

89
insns/insn_mulhu.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_mulhu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_mulhu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_mulhu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_mulhu, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_mulhu, self).elaborate(platform)
# MULHU instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xd13db50d949ce5e8)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b011) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

87
insns/insn_or.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_R import *
class rvfi_insn_or(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_or(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_or, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_or, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_or, self).elaborate(platform)
# OR instruction
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b110) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

86
insns/insn_ori.py
View File

@ -1,84 +1,20 @@
from nmigen import *
from insn_I import *
class rvfi_insn_ori(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_ori(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_ori, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_ori, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_ori, self).elaborate(platform)
# ORI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(self.rvfi_rs1_rdata | insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b110) & (insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

89
insns/insn_rem.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_rem(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_rem(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_rem, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_rem, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_rem, self).elaborate(platform)
# REM instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xf5b7d8538da68fa5)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b110) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

89
insns/insn_remu.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_remu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_remu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_remu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_remu, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_remu, self).elaborate(platform)
# REMU instruction
altops_bitmask = Signal(64)
altops_bitmask = Signal(32)
m.d.comb += altops_bitmask.eq(0xbc4402413138d0e1)
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000001) & (insn_funct3 == 0b111) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

85
insns/insn_sb.py
View File

@ -1,84 +1,23 @@
from nmigen import *
from insn_S import *
class rvfi_insn_sb(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sb(rvfi_insn_S):
def __init__(self):
super(rvfi_insn_sb, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sb, self).ports()
def elaborate(self, platform):
m = Module()
# S-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[7:12], self.rvfi_insn[25:32])))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sb, self).elaborate(platform)
# SB instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b000) & (insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
addr = Signal(32)
m.d.comb += 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 == 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(~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

85
insns/insn_sh.py
View File

@ -1,84 +1,23 @@
from nmigen import *
from insn_S import *
class rvfi_insn_sh(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sh(rvfi_insn_S):
def __init__(self):
super(rvfi_insn_sh, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sh, self).ports()
def elaborate(self, platform):
m = Module()
# S-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[7:12], self.rvfi_insn[25:32])))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sh, self).elaborate(platform)
# SH instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b001) & (insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
addr = Signal(32)
m.d.comb += 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 == 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(~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

89
insns/insn_sll.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_sll(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sll(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_sll, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sll, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sll, self).elaborate(platform)
# SLL instruction
shamt = Signal(6)
m.d.comb += shamt.eq(Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5]))
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b001) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

88
insns/insn_slli.py
View File

@ -1,86 +1,20 @@
from nmigen import *
from insn_I_shift import *
class rvfi_insn_slli(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_slli(rvfi_insn_I_shift):
def __init__(self):
super(rvfi_insn_slli, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_slli, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format (shift variation)
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct6 = Signal(7)
m.d.comb += insn_funct6.eq(self.rvfi_insn[26:32])
insn_shamt = Signal(6)
m.d.comb += insn_shamt.eq(self.rvfi_insn[20:26])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_slli, self).elaborate(platform)
# SLLI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(self.rvfi_rs1_rdata << insn_shamt)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct6 == 0b000000) & (insn_funct3 == 0b001) & (insn_opcode == 0b0010011) & ((~insn_shamt[5]) | (self.RISCV_FORMAL_XLEN == 64)))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

87
insns/insn_slt.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_R import *
class rvfi_insn_slt(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_slt(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_slt, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_slt, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_slt, self).elaborate(platform)
# SLT instruction
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b010) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

86
insns/insn_slti.py
View File

@ -1,84 +1,20 @@
from nmigen import *
from insn_I import *
class rvfi_insn_slti(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_slti(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_slti, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_slti, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_slti, self).elaborate(platform)
# SLTI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(Value.as_signed(self.rvfi_rs1_rdata) < Value.as_signed(insn_imm))
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b010) & (insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

86
insns/insn_sltiu.py
View File

@ -1,84 +1,20 @@
from nmigen import *
from insn_I import *
class rvfi_insn_sltiu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sltiu(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_sltiu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sltiu, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sltiu, self).elaborate(platform)
# SLTIU instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(self.rvfi_rs1_rdata < insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b011) & (insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

87
insns/insn_sltu.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_R import *
class rvfi_insn_sltu(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sltu(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_sltu, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sltu, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format (shift variation)
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sltu, self).elaborate(platform)
# SLTU instruction
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b011) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

91
insns/insn_sra.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_sra(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sra(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_sra, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sra, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sra, self).elaborate(platform)
# SRA instruction
shamt = Signal(6)
m.d.comb += shamt.eq(Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5]))
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq((self.rvfi_rs1_rdata >> shamt) | (-(self.rvfi_rs1_rdata < 0) << (self.RISCV_FORMAL_XLEN - shamt))) # https://stackoverflow.com/a/25207042
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct7 == 0b0100000) & (insn_funct3 == 0b101) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

88
insns/insn_srai.py
View File

@ -1,86 +1,20 @@
from nmigen import *
from insn_I_shift import *
class rvfi_insn_srai(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_srai(rvfi_insn_I_shift):
def __init__(self):
super(rvfi_insn_srai, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_srai, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format (shift variation)
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct6 = Signal(7)
m.d.comb += insn_funct6.eq(self.rvfi_insn[26:32])
insn_shamt = Signal(6)
m.d.comb += insn_shamt.eq(self.rvfi_insn[20:26])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_srai, self).elaborate(platform)
# SRAI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq((self.rvfi_rs1_rdata >> insn_shamt) | (-(self.rvfi_rs1_rdata < 0) << (self.RISCV_FORMAL_XLEN - insn_shamt))) # https://stackoverflow.com/a/25207042
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct6 == 0b010000) & (insn_funct3 == 0b101) & (insn_opcode == 0b0010011) & ((~insn_shamt[5]) | (self.RISCV_FORMAL_XLEN == 64)))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

89
insns/insn_srl.py
View File

@ -1,88 +1,23 @@
from nmigen import *
from insn_R import *
class rvfi_insn_srl(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_srl(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_srl, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_srl, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_srl, self).elaborate(platform)
# SRL instruction
shamt = Signal(6)
m.d.comb += shamt.eq(Mux(self.RISCV_FORMAL_XLEN == 64, self.rvfi_rs2_rdata[:6], self.rvfi_rs2_rdata[:5]))
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b101) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

88
insns/insn_srli.py
View File

@ -1,86 +1,20 @@
from nmigen import *
from insn_I_shift import *
class rvfi_insn_srli(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_srli(rvfi_insn_I_shift):
def __init__(self):
super(rvfi_insn_srli, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_srli, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format (shift variation)
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct6 = Signal(7)
m.d.comb += insn_funct6.eq(self.rvfi_insn[26:32])
insn_shamt = Signal(6)
m.d.comb += insn_shamt.eq(self.rvfi_insn[20:26])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_srli, self).elaborate(platform)
# SRLI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(self.rvfi_rs1_rdata >> insn_shamt)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct6 == 0b000000) & (insn_funct3 == 0b101) & (insn_opcode == 0b0010011) & ((~insn_shamt[5]) | (self.RISCV_FORMAL_XLEN == 64)))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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

87
insns/insn_sub.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_R import *
class rvfi_insn_sub(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sub(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_sub, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sub, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sub, self).elaborate(platform)
# SUB instruction
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0100000) & (insn_funct3 == 0b000) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

85
insns/insn_sw.py
View File

@ -1,84 +1,23 @@
from nmigen import *
from insn_S import *
class rvfi_insn_sw(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_sw(rvfi_insn_S):
def __init__(self):
super(rvfi_insn_sw, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_sw, self).ports()
def elaborate(self, platform):
m = Module()
# S-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(Cat(self.rvfi_insn[7:12], self.rvfi_insn[25:32])))
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_sw, self).elaborate(platform)
# SW instruction
addr = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += addr.eq(self.rvfi_rs1_rdata + insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b010) & (insn_opcode == 0b0100011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
addr = Signal(32)
m.d.comb += 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 == 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(~misa_ok)
# 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)
m.d.comb += self.spec_trap.eq(~self.misa_ok)
return m

11
insns/insn_types.md Normal file
View File

@ -0,0 +1,11 @@
# 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 |

87
insns/insn_xor.py
View File

@ -1,86 +1,21 @@
from nmigen import *
from insn_R import *
class rvfi_insn_xor(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_xor(rvfi_insn_R):
def __init__(self):
super(rvfi_insn_xor, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_xor, self).ports()
def elaborate(self, platform):
m = Module()
# R-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_funct7 = Signal(7)
m.d.comb += insn_funct7.eq(self.rvfi_insn[25:32])
insn_rs2 = Signal(5)
m.d.comb += insn_rs2.eq(self.rvfi_insn[20:25])
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_xor, self).elaborate(platform)
# XOR instruction
result = Signal(self.RISCV_FORMAL_XLEN)
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 & (~insn_padding) & (insn_funct7 == 0b0000000) & (insn_funct3 == 0b100) & (insn_opcode == 0b0110011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rs2_addr.eq(insn_rs2)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_trap.eq(~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

86
insns/insn_xori.py
View File

@ -1,84 +1,20 @@
from nmigen import *
from insn_I import *
class rvfi_insn_xori(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_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)
self.spec_valid = Signal(1)
self.spec_trap = Signal(1)
self.spec_rs1_addr = Signal(5)
self.spec_rs2_addr = Signal(5)
self.spec_rd_addr = Signal(5)
self.spec_rd_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_pc_wdata = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_addr = Signal(self.RISCV_FORMAL_XLEN)
self.spec_mem_rmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wmask = Signal(int(self.RISCV_FORMAL_XLEN // 8))
self.spec_mem_wdata = Signal(self.RISCV_FORMAL_XLEN)
class rvfi_insn_xori(rvfi_insn_I):
def __init__(self):
super(rvfi_insn_xori, self).__init__()
def ports(self):
input_ports = [
self.rvfi_valid,
self.rvfi_insn,
self.rvfi_pc_rdata,
self.rvfi_rs1_rdata,
self.rvfi_rs2_rdata,
self.rvfi_mem_rdata
]
output_ports = [
self.spec_valid,
self.spec_trap,
self.spec_rs1_addr,
self.spec_rs2_addr,
self.spec_rd_addr,
self.spec_rd_wdata,
self.spec_pc_wdata,
self.spec_mem_addr,
self.spec_mem_rmask,
self.spec_mem_wmask,
self.spec_mem_wdata
]
return input_ports + output_ports
return super(rvfi_insn_xori, self).ports()
def elaborate(self, platform):
m = Module()
# I-type instruction format
insn_padding = Signal(self.RISCV_FORMAL_ILEN)
m.d.comb += insn_padding.eq(self.rvfi_insn >> 32)
insn_imm = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += insn_imm.eq(Value.as_signed(self.rvfi_insn[20:32]))
insn_rs1 = Signal(5)
m.d.comb += insn_rs1.eq(self.rvfi_insn[15:20])
insn_funct3 = Signal(3)
m.d.comb += insn_funct3.eq(self.rvfi_insn[12:15])
insn_rd = Signal(5)
m.d.comb += insn_rd.eq(self.rvfi_insn[7:12])
insn_opcode = Signal(7)
m.d.comb += insn_opcode.eq(self.rvfi_insn[:7])
misa_ok = Signal(1)
m.d.comb += misa_ok.eq(1)
m = super(rvfi_insn_xori, self).elaborate(platform)
# XORI instruction
result = Signal(self.RISCV_FORMAL_XLEN)
m.d.comb += result.eq(self.rvfi_rs1_rdata ^ insn_imm)
m.d.comb += self.spec_valid.eq(self.rvfi_valid & (~insn_padding) & (insn_funct3 == 0b100) & (insn_opcode == 0b0010011))
m.d.comb += self.spec_rs1_addr.eq(insn_rs1)
m.d.comb += self.spec_rd_addr.eq(insn_rd)
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)
# default assignments
m.d.comb += self.spec_rs2_addr.eq(0)
m.d.comb += self.spec_trap.eq(~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