riscv/rocket-chip
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New privileged ISA implementation

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This commit is contained in:
Andrew Waterman 2015-03-14 02:49:07 -07:00
parent ebbd14254c
commit e85c54cc4b
10 changed files with 690 additions and 482 deletions
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6
rocket/src/main/scala/consts.scala
View File

@ -59,5 +59,11 @@ trait ScalarOpConstants {
val DW_64 = Y
val DW_XPR = Y
val SZ_PRV = 2
val PRV_U = 0
val PRV_S = 1
val PRV_H = 2
val PRV_M = 3
val RA = UInt(1, 5)
}

385
rocket/src/main/scala/csr.scala
View File

@ -4,34 +4,71 @@ package rocket
import Chisel._
import Util._
import Instructions._
import Node._
import uncore._
import scala.math._
class Status extends Bundle {
val ip = Bits(width = 8)
val im = Bits(width = 8)
val zero = Bits(width = 7)
val er = Bool()
val vm = Bool()
val s64 = Bool()
val u64 = Bool()
val ef = Bool()
val pei = Bool()
val ei = Bool()
class MStatus extends Bundle {
val sd = Bool()
val zero6 = UInt(width = 19)
val ha = UInt(width = 4)
val sa = UInt(width = 4)
val ua = UInt(width = 4)
val zero5 = UInt(width = 1)
val xs = UInt(width = 2)
val fs = UInt(width = 2)
val mtie = Bool()
val htie = Bool()
val stie = Bool()
val zero4 = UInt(width = 1)
val vm = UInt(width = 4)
val zero3 = UInt(width = 1)
val mprv = UInt(width = 2)
val zero2 = UInt(width = 3)
val prv2 = UInt(width = 2)
val ie2 = Bool()
val prv1 = UInt(width = 2)
val ie1 = Bool()
val prv = UInt(width = 2)
val ie = Bool()
val msip = Bool()
val hsip = Bool()
val ssip = Bool()
val zero1 = UInt(width = 1)
}
class SStatus extends Bundle {
val sd = Bool()
val zero6 = UInt(width = 32)
val xs = UInt(width = 2)
val fs = UInt(width = 2)
val tip = Bool()
val zero5 = UInt(width = 1)
val tie = Bool()
val zero4 = UInt(width = 4)
val ua = UInt(width = 4)
val zero3 = UInt(width = 7)
val ps = Bool()
val s = Bool()
val pie = UInt(width = 1)
val zero2 = UInt(width = 2)
val ie = Bool()
val zero1 = UInt(width = 2)
val sip = Bool()
val zero0 = UInt(width = 1)
}
object CSR
{
// commands
val SZ = 2
val X = Bits("b??", 2)
val N = Bits(0,2)
val W = Bits(1,2)
val S = Bits(2,2)
val C = Bits(3,2)
val SZ = 3
val X = UInt.DC(SZ)
val N = UInt(0,SZ)
val W = UInt(1,SZ)
val S = UInt(2,SZ)
val C = UInt(3,SZ)
val I = UInt(4,SZ)
val R = UInt(5,SZ)
}
class CSRFileIO extends CoreBundle {
@ -43,40 +80,49 @@ class CSRFileIO extends CoreBundle {
val wdata = Bits(INPUT, xLen)
}
val status = new Status().asOutput
val csr_replay = Bool(OUTPUT)
val csr_xcpt = Bool(OUTPUT)
val status = new MStatus().asOutput
val ptbr = UInt(OUTPUT, paddrBits)
val evec = UInt(OUTPUT, vaddrBits+1)
val exception = Bool(INPUT)
val retire = UInt(INPUT, log2Up(1+retireWidth))
val uarch_counters = Vec.fill(16)(UInt(INPUT, log2Up(1+retireWidth)))
val cause = UInt(INPUT, xLen)
val badvaddr_wen = Bool(INPUT)
val pc = UInt(INPUT, vaddrBits+1)
val mbadaddr_wen = Bool(INPUT)
val pc = SInt(INPUT, vaddrBits+1)
val sret = Bool(INPUT)
val fatc = Bool(OUTPUT)
val replay = Bool(OUTPUT)
val time = UInt(OUTPUT, xLen)
val fcsr_rm = Bits(OUTPUT, FPConstants.RM_SZ)
val fcsr_flags = Valid(Bits(width = FPConstants.FLAGS_SZ)).flip
val rocc = new RoCCInterface().flip
val interrupt = Bool(OUTPUT)
val interrupt_cause = UInt(OUTPUT, xLen)
}
class CSRFile extends CoreModule
{
val io = new CSRFileIO
val reg_epc = Reg(Bits(width = vaddrBits+1))
val reg_badvaddr = Reg(Bits(width = vaddrBits))
val reg_evec = Reg(Bits(width = vaddrBits))
val reg_compare = Reg(Bits(width = 32))
val reg_cause = Reg(Bits(width = xLen))
val reg_mstatus = Reg(new MStatus)
val reg_mepc = Reg(SInt(width = vaddrBits+1))
val reg_mcause = Reg(Bits(width = xLen))
val reg_mbadaddr = Reg(SInt(width = vaddrBits+1))
val reg_mscratch = Reg(Bits(width = xLen))
val reg_sepc = Reg(SInt(width = vaddrBits+1))
val reg_scause = Reg(Bits(width = xLen))
val reg_sbadaddr = Reg(SInt(width = vaddrBits+1))
val reg_sscratch = Reg(Bits(width = xLen))
val reg_stvec = Reg(SInt(width = vaddrBits))
val reg_stimecmp = Reg(Bits(width = 32))
val reg_sptbr = Reg(UInt(width = paddrBits))
val reg_tohost = Reg(init=Bits(0, xLen))
val reg_fromhost = Reg(init=Bits(0, xLen))
val reg_sup0 = Reg(Bits(width = xLen))
val reg_sup1 = Reg(Bits(width = xLen))
val reg_ptbr = Reg(UInt(width = paddrBits))
val reg_stats = Reg(init=Bool(false))
val reg_status = Reg(new Status) // reset down below
val reg_time = WideCounter(xLen)
val reg_instret = WideCounter(xLen, io.retire)
val reg_uarch_counters = io.uarch_counters.map(WideCounter(xLen, _))
@ -84,12 +130,27 @@ class CSRFile extends CoreModule
val reg_frm = Reg(UInt(width = 3))
val r_irq_timer = Reg(init=Bool(false))
val r_irq_ipi = Reg(init=Bool(true))
val irq_rocc = Bool(!params(BuildRoCC).isEmpty) && io.rocc.interrupt
val cpu_req_valid = io.rw.cmd != CSR.N
io.interrupt_cause := 0
io.interrupt := io.interrupt_cause(xLen-1)
def checkInterrupt(max_priv: UInt, cond: Bool, num: Int) = {
when (cond && (reg_mstatus.prv < max_priv || reg_mstatus.prv === max_priv && reg_mstatus.ie)) {
io.interrupt_cause := UInt((BigInt(1) << (xLen-1)) + num)
}
}
checkInterrupt(PRV_S, r_irq_timer, 0)
checkInterrupt(PRV_S, reg_mstatus.ssip, 1)
checkInterrupt(PRV_M, reg_mstatus.msip, 1)
checkInterrupt(PRV_M, reg_fromhost != 0, 2)
checkInterrupt(PRV_M, irq_rocc, 3)
val system_insn = io.rw.cmd === CSR.I
val cpu_ren = io.rw.cmd != CSR.N && !system_insn
val host_pcr_req_valid = Reg(Bool()) // don't reset
val host_pcr_req_fire = host_pcr_req_valid && !cpu_req_valid
val host_pcr_req_fire = host_pcr_req_valid && !cpu_ren
val host_pcr_rep_valid = Reg(Bool()) // don't reset
val host_pcr_bits = Reg(io.host.pcr_req.bits)
io.host.pcr_req.ready := !host_pcr_req_valid && !host_pcr_rep_valid
@ -108,58 +169,116 @@ class CSRFile extends CoreModule
io.host.debug_stats_pcr := reg_stats // direct export up the hierarchy
val addr = Mux(cpu_req_valid, io.rw.addr, host_pcr_bits.addr | 0x500)
val decoded_addr = {
val map = for ((v, i) <- CSRs.all.zipWithIndex)
yield v -> UInt(BigInt(1) << i)
val out = ROM(map)(addr)
Map((CSRs.all zip out.toBools):_*)
}
val addr = Mux(cpu_ren, io.rw.addr, host_pcr_bits.addr)
val decoded_addr = Map((
for ((v, i) <- CSRs.all.zipWithIndex)
yield v -> (addr === CSRs.all(i))):_*)
val wen = cpu_req_valid || host_pcr_req_fire && host_pcr_bits.rw
val wdata = Mux(cpu_req_valid, io.rw.wdata, host_pcr_bits.data)
val addr_valid = decoded_addr.values.reduce(_||_)
val fp_csr = decoded_addr(CSRs.fflags) || decoded_addr(CSRs.frm) || decoded_addr(CSRs.fcsr)
val csr_addr_priv = io.rw.addr(9,8)
val priv_sufficient = reg_mstatus.prv >= csr_addr_priv
val read_only = io.rw.addr(11,10).andR
val cpu_wen = cpu_ren && io.rw.cmd != CSR.R && priv_sufficient
val wen = cpu_wen && !read_only || host_pcr_req_fire && host_pcr_bits.rw
val wdata = Mux(io.rw.cmd === CSR.W, io.rw.wdata,
Mux(io.rw.cmd === CSR.C, io.rw.rdata & ~io.rw.wdata,
Mux(io.rw.cmd === CSR.S, io.rw.rdata | io.rw.wdata,
host_pcr_bits.data)))
io.status := reg_status
io.status.ip := Cat(r_irq_timer, reg_fromhost.orR, r_irq_ipi, Bool(false),
Bool(false), irq_rocc, Bool(false), Bool(false))
io.fatc := wen && decoded_addr(CSRs.fatc)
io.evec := Mux(io.exception, reg_evec.toSInt, reg_epc).toUInt
io.ptbr := reg_ptbr
val opcode = io.rw.addr(3,0)
// The following comparison is meant to be opcode === SFENCE_VM(23,20). But
// FOR SOME FUCKING REASON, extracting SFENCE_VM(23,20) gives 3, not 4.
val insn_sfence_vm = opcode === 4 && system_insn && priv_sufficient
val insn_redirect_trap = opcode === MRTS(23,20) && system_insn && priv_sufficient
val insn_ret = opcode === SRET(23,20) /* or H/MRET */ && io.rw.addr(1) && system_insn && priv_sufficient
val insn_break = opcode === SBREAK(23,20) && io.rw.addr(0) && system_insn && priv_sufficient
val insn_call = opcode === SCALL(23,20) /* or H/MCALL */ && system_insn && priv_sufficient
when (io.badvaddr_wen) {
val wdata = io.rw.wdata
val (upper, lower) = Split(wdata, vaddrBits)
val sign = Mux(lower.toSInt < SInt(0), upper.andR, upper.orR)
reg_badvaddr := Cat(sign, lower).toSInt
}
val csr_xcpt = (cpu_wen && read_only) ||
(cpu_ren && (!priv_sufficient || !addr_valid || fp_csr && !io.status.fs.orR)) ||
(system_insn && !priv_sufficient) ||
insn_call || insn_break
when (io.exception) {
reg_status.s := true
reg_status.ps := reg_status.s
reg_status.ei := false
reg_status.pei := reg_status.ei
reg_epc := io.pc.toSInt
reg_cause := io.cause
val mtvec = reg_mstatus.prv << 6
io.fatc := insn_sfence_vm
io.evec := Mux(io.exception || csr_xcpt, mtvec.zext,
Mux(insn_redirect_trap, reg_stvec,
Mux(reg_mstatus.prv(1), reg_mepc, reg_sepc))).toUInt
io.ptbr := reg_sptbr
io.csr_xcpt := csr_xcpt || insn_redirect_trap || insn_ret /* sort of a lie */
io.status := reg_mstatus
io.status.fs := reg_mstatus.fs.orR.toSInt // either off or dirty (no clean/initial support yet)
io.status.xs := reg_mstatus.xs.orR.toSInt // either off or dirty (no clean/initial support yet)
io.status.sd := reg_mstatus.xs.orR || reg_mstatus.fs.orR
when (io.exception || csr_xcpt) {
reg_mstatus.ie := false
reg_mstatus.prv := PRV_M
reg_mstatus.mprv := PRV_M
reg_mstatus.prv1 := reg_mstatus.prv
reg_mstatus.ie1 := reg_mstatus.ie
reg_mstatus.prv2 := reg_mstatus.prv1
reg_mstatus.ie2 := reg_mstatus.ie1
reg_mepc := io.pc
reg_mcause := io.cause
when (csr_xcpt) {
reg_mcause := Causes.illegal_instruction
when (insn_break) { reg_mcause := Causes.breakpoint }
when (insn_call) { reg_mcause := Causes.scall + csr_addr_priv }
}
reg_mbadaddr := io.pc
when (io.cause === Causes.fault_load || io.cause === Causes.misaligned_load ||
io.cause === Causes.fault_store || io.cause === Causes.misaligned_store) {
val wdata = io.rw.wdata
val (upper, lower) = Split(wdata, vaddrBits)
val sign = Mux(lower.toSInt < SInt(0), upper.andR, upper.orR)
reg_mbadaddr := Cat(sign, lower).toSInt
}
}
when (io.sret) {
reg_status.s := reg_status.ps
reg_status.ei := reg_status.pei
when (insn_ret) {
reg_mstatus.ie := reg_mstatus.ie1
reg_mstatus.prv := reg_mstatus.prv1
reg_mstatus.prv1 := reg_mstatus.prv2
reg_mstatus.ie1 := reg_mstatus.ie2
reg_mstatus.prv2 := PRV_U
reg_mstatus.ie2 := true
}
when (reg_time(reg_compare.getWidth-1,0) === reg_compare) {
when (insn_redirect_trap) {
reg_mstatus.prv := PRV_S
reg_sbadaddr := reg_mbadaddr
reg_scause := reg_mcause
reg_sepc := reg_mepc
}
assert(PopCount(insn_ret :: insn_redirect_trap :: io.exception :: csr_xcpt :: io.csr_replay :: Nil) <= 1, "these conditions must be mutually exclusive")
when (reg_time(reg_stimecmp.getWidth-1,0) === reg_stimecmp) {
r_irq_timer := true
}
io.time := reg_time
io.host.ipi_req.valid := cpu_req_valid && decoded_addr(CSRs.send_ipi)
io.host.ipi_req.valid := cpu_wen && decoded_addr(CSRs.send_ipi)
io.host.ipi_req.bits := io.rw.wdata
io.replay := io.host.ipi_req.valid && !io.host.ipi_req.ready
io.csr_replay := io.host.ipi_req.valid && !io.host.ipi_req.ready
when (host_pcr_req_fire && !host_pcr_bits.rw && decoded_addr(CSRs.tohost)) { reg_tohost := UInt(0) }
val read_impl = Bits(2)
val read_ptbr = reg_ptbr(paddrBits-1, pgIdxBits) << UInt(pgIdxBits)
val read_mstatus = io.status.toBits
val read_sstatus = new SStatus
read_sstatus := new SStatus().fromBits(read_mstatus) // sstatus mostly overlaps mstatus
read_sstatus.zero0 := 0
read_sstatus.zero1 := 0
read_sstatus.zero2 := 0
read_sstatus.zero3 := 0
read_sstatus.zero4 := 0
read_sstatus.zero5 := 0
read_sstatus.ua := io.status.ua
read_sstatus.tip := r_irq_timer
val read_mapping = collection.mutable.LinkedHashMap[Int,Bits](
CSRs.fflags -> (if (!params(BuildFPU).isEmpty) reg_fflags else UInt(0)),
@ -167,23 +286,25 @@ class CSRFile extends CoreModule
CSRs.fcsr -> (if (!params(BuildFPU).isEmpty) Cat(reg_frm, reg_fflags) else UInt(0)),
CSRs.cycle -> reg_time,
CSRs.time -> reg_time,
CSRs.scycle -> reg_time,
CSRs.stime -> reg_time,
CSRs.instret -> reg_instret,
CSRs.sup0 -> reg_sup0,
CSRs.sup1 -> reg_sup1,
CSRs.epc -> reg_epc,
CSRs.badvaddr -> reg_badvaddr,
CSRs.ptbr -> read_ptbr,
CSRs.asid -> UInt(0),
CSRs.count -> reg_time,
CSRs.compare -> reg_compare,
CSRs.evec -> reg_evec,
CSRs.cause -> reg_cause,
CSRs.status -> io.status.toBits,
CSRs.sinstret -> reg_instret,
CSRs.mstatus -> read_mstatus,
CSRs.mscratch -> reg_mscratch,
CSRs.mepc -> reg_mepc,
CSRs.mbadaddr -> reg_mbadaddr,
CSRs.mcause -> reg_mcause,
CSRs.sstatus -> read_sstatus.toBits,
CSRs.sscratch -> reg_sscratch,
CSRs.sepc -> reg_sepc,
CSRs.scause -> reg_scause,
CSRs.sbadaddr -> reg_sbadaddr,
CSRs.sptbr -> reg_sptbr,
CSRs.sasid -> UInt(0),
CSRs.stimecmp -> reg_stimecmp,
CSRs.stvec -> reg_stvec,
CSRs.hartid -> io.host.id,
CSRs.impl -> read_impl,
CSRs.fatc -> read_impl, // don't care
CSRs.send_ipi -> read_impl, // don't care
CSRs.clear_ipi -> read_impl, // don't care
CSRs.stats -> reg_stats,
CSRs.tohost -> reg_tohost,
CSRs.fromhost -> reg_fromhost)
@ -199,46 +320,80 @@ class CSRFile extends CoreModule
}
when (wen) {
when (decoded_addr(CSRs.status)) {
reg_status := new Status().fromBits(wdata)
reg_status.s64 := true
reg_status.u64 := true
reg_status.zero := 0
if (!params(UseVM)) reg_status.vm := false
if (params(BuildRoCC).isEmpty) reg_status.er := false
if (params(BuildFPU).isEmpty) reg_status.ef := false
when (decoded_addr(CSRs.mstatus)) {
val new_mstatus = new MStatus().fromBits(wdata)
reg_mstatus.ssip := new_mstatus.ssip
reg_mstatus.msip := new_mstatus.msip
reg_mstatus.stie := new_mstatus.stie
reg_mstatus.ie := new_mstatus.ie
reg_mstatus.ie1 := new_mstatus.ie1
reg_mstatus.ie2 := new_mstatus.ie2
when (new_mstatus.mprv != PRV_H) { reg_mstatus.mprv := new_mstatus.mprv }
when (new_mstatus.prv != PRV_H) { reg_mstatus.prv := new_mstatus.prv }
when (new_mstatus.prv1 != PRV_H) { reg_mstatus.prv1 := new_mstatus.prv1 }
when (new_mstatus.prv2 != PRV_H) { reg_mstatus.prv2 := new_mstatus.prv2 }
if (params(UseVM)) when (new_mstatus.vm === 0 || new_mstatus.vm === 5) { reg_mstatus.vm := new_mstatus.vm }
if (!params(BuildFPU).isEmpty) reg_mstatus.fs := new_mstatus.fs
if (!params(BuildRoCC).isEmpty) reg_mstatus.xs := new_mstatus.xs
}
when (decoded_addr(CSRs.sstatus)) {
val new_sstatus = new SStatus().fromBits(wdata)
reg_mstatus.ssip := new_sstatus.sip
reg_mstatus.stie := new_sstatus.tie
reg_mstatus.ie := new_sstatus.ie
reg_mstatus.ie1 := new_sstatus.pie
reg_mstatus.prv1 := Mux(new_sstatus.ps, PRV_S, PRV_U)
if (!params(BuildFPU).isEmpty) reg_mstatus.fs := new_sstatus.fs
if (!params(BuildRoCC).isEmpty) reg_mstatus.xs := new_sstatus.xs
}
when (decoded_addr(CSRs.fflags)) { reg_fflags := wdata }
when (decoded_addr(CSRs.frm)) { reg_frm := wdata }
when (decoded_addr(CSRs.fcsr)) { reg_fflags := wdata; reg_frm := wdata >> reg_fflags.getWidth }
when (decoded_addr(CSRs.epc)) { reg_epc := wdata(vaddrBits,0).toSInt }
when (decoded_addr(CSRs.evec)) { reg_evec := wdata(vaddrBits-1,0).toSInt }
when (decoded_addr(CSRs.count)) { reg_time := wdata.toUInt }
when (decoded_addr(CSRs.compare)) { reg_compare := wdata(31,0).toUInt; r_irq_timer := Bool(false) }
when (decoded_addr(CSRs.mepc)) { reg_mepc := wdata(vaddrBits,0).toSInt }
when (decoded_addr(CSRs.mscratch)) { reg_mscratch := wdata }
when (decoded_addr(CSRs.mcause)) { reg_mcause := wdata & UInt((BigInt(1) << (xLen-1)) + 31) /* only implement 5 LSBs and MSB */ }
when (decoded_addr(CSRs.mbadaddr)) { reg_mbadaddr := wdata }
when (decoded_addr(CSRs.sepc)) { reg_sepc := wdata(vaddrBits,0).toSInt }
when (decoded_addr(CSRs.stvec)) { reg_stvec := wdata(vaddrBits-1,0).toSInt }
when (decoded_addr(CSRs.scycle)) { reg_time := wdata.toUInt }
when (decoded_addr(CSRs.stime)) { reg_time := wdata.toUInt }
when (decoded_addr(CSRs.sinstret)) { reg_instret := wdata.toUInt }
when (decoded_addr(CSRs.stimecmp)) { reg_stimecmp := wdata(31,0).toUInt; r_irq_timer := Bool(false) }
when (decoded_addr(CSRs.fromhost)) { when (reg_fromhost === UInt(0) || !host_pcr_req_fire) { reg_fromhost := wdata } }
when (decoded_addr(CSRs.tohost)) { when (reg_tohost === UInt(0) || host_pcr_req_fire) { reg_tohost := wdata } }
when (decoded_addr(CSRs.clear_ipi)){ r_irq_ipi := wdata(0) }
when (decoded_addr(CSRs.sup0)) { reg_sup0 := wdata }
when (decoded_addr(CSRs.sup1)) { reg_sup1 := wdata }
when (decoded_addr(CSRs.ptbr)) { reg_ptbr := Cat(wdata(paddrBits-1, pgIdxBits), Bits(0, pgIdxBits)).toUInt }
when (decoded_addr(CSRs.sscratch)) { reg_sscratch := wdata }
when (decoded_addr(CSRs.sptbr)) { reg_sptbr := Cat(wdata(paddrBits-1, pgIdxBits), Bits(0, pgIdxBits)).toUInt }
when (decoded_addr(CSRs.stats)) { reg_stats := wdata(0) }
}
io.host.ipi_rep.ready := Bool(true)
when (io.host.ipi_rep.valid) { r_irq_ipi := Bool(true) }
io.host.ipi_rep.ready := true
when (io.host.ipi_rep.valid) { reg_mstatus.msip := true }
when(this.reset) {
reg_status.ei := false
reg_status.pei := false
reg_status.ef := false
reg_status.er := false
reg_status.ps := false
reg_status.s := true
reg_status.u64 := true
reg_status.s64 := true
reg_status.vm := false
reg_status.zero := 0
reg_status.im := 0
reg_status.ip := 0
reg_mstatus.zero1 := 0
reg_mstatus.ssip := false
reg_mstatus.hsip := false
reg_mstatus.msip := false
reg_mstatus.ie := false
reg_mstatus.prv := PRV_M
reg_mstatus.ie1 := false
reg_mstatus.prv1 := PRV_S
reg_mstatus.ie2 := false
reg_mstatus.prv2 := PRV_S
reg_mstatus.mprv := PRV_M
reg_mstatus.zero2 := 0
reg_mstatus.vm := 0
reg_mstatus.zero3 := 0
reg_mstatus.stie := false
reg_mstatus.htie := false
reg_mstatus.mtie := false
reg_mstatus.fs := 0
reg_mstatus.xs := 0
reg_mstatus.zero4 := 0
reg_mstatus.ua := 4
reg_mstatus.sa := 4
reg_mstatus.ha := 0
reg_mstatus.zero5 := 0
reg_mstatus.sd := false
}
}

521
rocket/src/main/scala/ctrl.scala
View File

@ -17,8 +17,7 @@ class CtrlDpathIO extends CoreBundle
val ren = Vec.fill(2)(Bool(OUTPUT))
val ex_ctrl = new IntCtrlSigs().asOutput
val mem_ctrl = new IntCtrlSigs().asOutput
val csr = UInt(OUTPUT, 3)
val sret = Bool(OUTPUT)
val csr_cmd = UInt(OUTPUT, CSR.SZ)
val ex_valid = Bool(OUTPUT)
val wb_wen = Bool(OUTPUT)
val bypass = Vec.fill(2)(Bool(OUTPUT))
@ -28,11 +27,11 @@ class CtrlDpathIO extends CoreBundle
val retire = Bool(OUTPUT)
val exception = Bool(OUTPUT)
val cause = UInt(OUTPUT, xLen)
val badvaddr_wen = Bool(OUTPUT) // high for a load/store access fault
// inputs from datapath
val inst = Bits(INPUT, 32)
val mem_br_taken = Bool(INPUT)
val mem_misprediction = Bool(INPUT)
val mem_npc_misaligned = Bool(INPUT)
val div_mul_rdy = Bool(INPUT)
val ll_wen = Bool(INPUT)
val ll_waddr = UInt(INPUT, 5)
@ -40,10 +39,14 @@ class CtrlDpathIO extends CoreBundle
val mem_rs1_ra = Bool(INPUT)
val mem_waddr = UInt(INPUT, 5)
val wb_waddr = UInt(INPUT, 5)
val status = new Status().asInput
val status = new MStatus().asInput
val fp_sboard_clr = Bool(INPUT)
val fp_sboard_clra = UInt(INPUT, 5)
// inputs from csr file
val csr_replay = Bool(INPUT)
val csr_xcpt = Bool(INPUT)
val interrupt = Bool(INPUT)
val interrupt_cause = UInt(INPUT, xLen)
}
abstract trait DecodeConstants
@ -52,14 +55,14 @@ abstract trait DecodeConstants
val decode_default =
// jal renf1 fence.i
// | jalr | renf2 | sret
// fp_val| | renx2 | | renf3 | | syscall
// | rocc| | | renx1 s_alu1 mem_val | | | wfd | | |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div | | |
// | | | | | | | | | | | | | | | | | | | | | wxd | | | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | | | |
List(N, X,X,X,X,X,X,X,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, X,X,X,X,X,X,CSR.X,X,X,X,X,X)
// | jalr | renf2 |
// fp_val| | renx2 | | renf3 |
// | rocc| | | renx1 s_alu1 mem_val | | | wfd |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div |
// | | | | | | | | | | | | | | | | | | | | | wxd | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | |
List(N, X,X,X,X,X,X,X,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, X,X,X,X,X,X,CSR.X,X,X,X)
val table: Array[(UInt, List[UInt])]
}
@ -89,8 +92,6 @@ class IntCtrlSigs extends Bundle {
val wxd = Bool()
val csr = Bits(width = CSR.SZ)
val fence_i = Bool()
val sret = Bool()
val scall = Bool()
val fence = Bool()
val amo = Bool()
@ -98,8 +99,7 @@ class IntCtrlSigs extends Bundle {
val decoder = DecodeLogic(inst, XDecode.decode_default, table)
Vec(legal, fp, rocc, branch, jal, jalr, rxs2, rxs1, sel_alu2, sel_alu1,
sel_imm, alu_dw, alu_fn, mem, mem_cmd, mem_type,
rfs1, rfs2, rfs3, wfd, div, wxd,
csr, fence_i, sret, scall, fence, amo) := decoder
rfs1, rfs2, rfs3, wfd, div, wxd, csr, fence_i, fence, amo) := decoder
this
}
}
@ -108,224 +108,230 @@ object XDecode extends DecodeConstants
{
val table = Array(
// jal renf1 fence.i
// | jalr | renf2 | sret
// fp_val| | renx2 | | renf3 | | syscall
// | rocc| | | renx1 s_alu1 mem_val | | | wfd | | |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div | | |
// | | | | | | | | | | | | | | | | | | | | | wxd | | | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | | | |
BNE-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SNE, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
BEQ-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SEQ, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
BLT-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SLT, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
BLTU-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SLTU, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
BGE-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SGE, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
BGEU-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SGEU, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
// | jalr | renf2 |
// fp_val| | renx2 | | renf3 |
// | rocc| | | renx1 s_alu1 mem_val | | | wfd |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div |
// | | | | | | | | | | | | | | | | | | | | | wxd | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | |
BNE-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SNE, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
BEQ-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SEQ, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
BLT-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SLT, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
BLTU-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SLTU, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
BGE-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SGE, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
BGEU-> List(Y, N,N,Y,N,N,Y,Y,A2_RS2, A1_RS1, IMM_SB,DW_X, FN_SGEU, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
JAL-> List(Y, N,N,N,Y,N,N,N,A2_FOUR,A1_PC, IMM_UJ,DW_X, FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
JALR-> List(Y, N,N,N,N,Y,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
AUIPC-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_PC, IMM_U, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
JAL-> List(Y, N,N,N,Y,N,N,N,A2_FOUR,A1_PC, IMM_UJ,DW_X, FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
JALR-> List(Y, N,N,N,N,Y,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
AUIPC-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_PC, IMM_U, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
LB-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_B, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
LH-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_H, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
LW-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
LD-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
LBU-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_BU,N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
LHU-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_HU,N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
LWU-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_WU,N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SB-> List(Y, N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_B, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
SH-> List(Y, N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_H, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
SW-> List(Y, N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_W, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
SD-> List(xpr64,N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_D, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
LB-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_B, N,N,N,N,N,Y,CSR.N,N,N,N),
LH-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_H, N,N,N,N,N,Y,CSR.N,N,N,N),
LW-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N),
LD-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N),
LBU-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_BU,N,N,N,N,N,Y,CSR.N,N,N,N),
LHU-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_HU,N,N,N,N,N,Y,CSR.N,N,N,N),
LWU-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_WU,N,N,N,N,N,Y,CSR.N,N,N,N),
SB-> List(Y, N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_B, N,N,N,N,N,N,CSR.N,N,N,N),
SH-> List(Y, N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_H, N,N,N,N,N,N,CSR.N,N,N,N),
SW-> List(Y, N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_W, N,N,N,N,N,N,CSR.N,N,N,N),
SD-> List(xpr64,N,N,N,N,N,Y,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_D, N,N,N,N,N,N,CSR.N,N,N,N),
AMOADD_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_ADD, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOXOR_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_XOR, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOSWAP_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_SWAP,MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOAND_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_AND, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOOR_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_OR, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMIN_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MIN, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMINU_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MINU,MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMAX_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAX, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMAXU_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAXU,MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOADD_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_ADD, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOSWAP_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_SWAP,MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOXOR_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_XOR, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOAND_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_AND, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOOR_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_OR, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMIN_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MIN, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMINU_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MINU,MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMAX_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAX, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOMAXU_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAXU,MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
AMOADD_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_ADD, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOXOR_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_XOR, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOSWAP_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_SWAP,MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOAND_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_AND, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOOR_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_OR, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMIN_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MIN, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMINU_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MINU,MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMAX_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAX, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMAXU_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAXU,MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOADD_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_ADD, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOSWAP_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_SWAP,MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOXOR_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_XOR, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOAND_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_AND, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOOR_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_OR, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMIN_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MIN, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMINU_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MINU,MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMAX_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAX, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
AMOMAXU_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XA_MAXU,MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
LR_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XLR, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
LR_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XLR, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
SC_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XSC, MT_W, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
SC_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XSC, MT_D, N,N,N,N,N,Y,CSR.N,N,N,N,N,Y),
LR_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XLR, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
LR_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XLR, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
SC_W-> List(Y, N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XSC, MT_W, N,N,N,N,N,Y,CSR.N,N,N,Y),
SC_D-> List(xpr64,N,N,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, Y,M_XSC, MT_D, N,N,N,N,N,Y,CSR.N,N,N,Y),
LUI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_U, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
ADDI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLTI -> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SLT, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLTIU-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SLTU, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
ANDI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_AND, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
ORI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_OR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
XORI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_XOR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLLI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRLI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRAI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
ADD-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SUB-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SUB, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLT-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SLT, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLTU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SLTU, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
AND-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_AND, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
OR-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_OR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
XOR-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_XOR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLL-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRL-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRA-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
LUI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_U, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
ADDI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLTI -> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SLT, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLTIU-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SLTU, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
ANDI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_AND, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
ORI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_OR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
XORI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_XOR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLLI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRLI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRAI-> List(Y, N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
ADD-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SUB-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SUB, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLT-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SLT, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLTU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SLTU, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
AND-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_AND, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
OR-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_OR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
XOR-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_XOR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLL-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRL-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRA-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
ADDIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLLIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRLIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRAIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
ADDW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SUBW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SUB, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SLLW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRLW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
SRAW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
ADDIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLLIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRLIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRAIW-> List(xpr64,N,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_32,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
ADDW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SUBW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SUB, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SLLW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SL, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRLW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SR, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
SRAW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32,FN_SRA, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
MUL-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MUL, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
MULH-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MULH, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
MULHU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MULHU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
MULHSU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MULHSU,N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
MULW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_MUL, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
MUL-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MUL, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
MULH-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MULH, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
MULHU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MULHU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
MULHSU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_MULHSU,N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
MULW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_MUL, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
DIV-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_DIV, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
DIVU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_DIVU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
REM-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_REM, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
REMU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_REMU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
DIVW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_DIV, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
DIVUW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_DIVU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
REMW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_REM, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
REMUW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_REMU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N,N,N),
DIV-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_DIV, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
DIVU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_DIVU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
REM-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_REM, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
REMU-> List(Y, N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_XPR,FN_REMU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
DIVW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_DIV, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
DIVUW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_DIVU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
REMW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_REM, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
REMUW-> List(xpr64,N,N,N,N,N,Y,Y,A2_RS2, A1_RS1, IMM_X, DW_32, FN_REMU, N,M_X, MT_X, N,N,N,N,Y,Y,CSR.N,N,N,N),
SCALL-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,Y,N,N),
SRET-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,Y,N,N,N),
FENCE-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,Y,N),
FENCE_I-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,Y,N,N,N,N),
CSRRW-> List(Y, N,N,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.W,N,N,N,N,N),
CSRRS-> List(Y, N,N,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.S,N,N,N,N,N),
CSRRC-> List(Y, N,N,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.C,N,N,N,N,N),
CSRRWI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_Z, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.W,N,N,N,N,N),
CSRRSI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_Z, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.S,N,N,N,N,N),
CSRRCI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_Z, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.C,N,N,N,N,N))
FENCE-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,Y,N),
FENCE_I-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,Y,N,N),
SFENCE_VM-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.I,N,N,N),
SCALL-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.I,N,N,N),
SBREAK-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.I,N,N,N),
SRET-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.I,N,N,N),
HCALL-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.I,N,N,N),
MRET-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.I,N,N,N),
MRTS-> List(Y, N,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,N,N,N,CSR.I,N,N,N),
CSRRW-> List(Y, N,N,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.W,N,N,N),
CSRRS-> List(Y, N,N,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.S,N,N,N),
CSRRC-> List(Y, N,N,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.C,N,N,N),
CSRRWI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_Z, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.W,N,N,N),
CSRRSI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_Z, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.S,N,N,N),
CSRRCI-> List(Y, N,N,N,N,N,N,N,A2_IMM, A1_ZERO,IMM_Z, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.C,N,N,N))
}
object FDecode extends DecodeConstants
{
val table = Array(
// jal renf1 fence.i
// | jalr | renf2 | sret
// fp_val| | renx2 | | renf3 | | syscall
// | rocc| | | renx1 s_alu1 mem_val | | | wfd | | |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div | | |
// | | | | | | | | | | | | | | | | | | | | | wxd | | | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | | | |
FCVT_S_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_D_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FSGNJ_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FSGNJ_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FSGNJX_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FSGNJX_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FSGNJN_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FSGNJN_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FMIN_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FMIN_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FMAX_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FMAX_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FADD_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FADD_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FSUB_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FSUB_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FMUL_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FMUL_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N,N,N),
FMADD_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FMADD_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FMSUB_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FMSUB_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FNMADD_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FNMADD_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FNMSUB_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FNMSUB_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N,N,N),
FCLASS_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCLASS_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FMV_X_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FMV_X_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_W_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_W_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_WU_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_WU_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_L_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_L_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_LU_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FCVT_LU_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N,N,N),
FEQ_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N,N,N),
FEQ_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N,N,N),
FLT_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N,N,N),
FLT_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N,N,N),
FLE_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N,N,N),
FLE_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N,N,N),
FMV_S_X-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FMV_D_X-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_S_W-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_D_W-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_S_WU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_D_WU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_S_L-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_D_L-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_S_LU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FCVT_D_LU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FLW-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_W, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FLD-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_D, N,N,N,Y,N,N,CSR.N,N,N,N,N,N),
FSW-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_W, N,Y,N,N,N,N,CSR.N,N,N,N,N,N),
FSD-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_D, N,Y,N,N,N,N,CSR.N,N,N,N,N,N))
// | jalr | renf2 |
// fp_val| | renx2 | | renf3 |
// | rocc| | | renx1 s_alu1 mem_val | | | wfd |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div |
// | | | | | | | | | | | | | | | | | | | | | wxd | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | |
FCVT_S_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N),
FSGNJ_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJ_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJX_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJX_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJN_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJN_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMIN_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMIN_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMAX_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMAX_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FADD_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FADD_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSUB_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSUB_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMUL_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMUL_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMADD_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FMADD_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FMSUB_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FMSUB_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMADD_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMADD_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMSUB_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMSUB_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FCLASS_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCLASS_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FMV_X_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FMV_X_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_W_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_W_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_WU_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_WU_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_L_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_L_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_LU_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_LU_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FEQ_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FEQ_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLT_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLT_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLE_S-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLE_D-> List(Y, Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FMV_S_X-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FMV_D_X-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_W-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_W-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_WU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_WU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_L-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_L-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_LU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_LU-> List(Y, Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FLW-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_W, N,N,N,Y,N,N,CSR.N,N,N,N),
FLD-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_D, N,N,N,Y,N,N,CSR.N,N,N,N),
FSW-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_W, N,Y,N,N,N,N,CSR.N,N,N,N),
FSD-> List(Y, Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_D, N,Y,N,N,N,N,CSR.N,N,N,N))
}
object RoCCDecode extends DecodeConstants
{
val table = Array(
// jal renf1 fence.i
// | jalr | renf2 | sret
// fp_val| | renx2 | | renf3 | | syscall
// | rocc| | | renx1 s_alu1 mem_val | | | wfd | | |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div | | |
// | | | | | | | | | | | | | | | | | | | | | wxd | | | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | | | |
CUSTOM0-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM0_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM0_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM0_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM0_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM0_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM1-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM1_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM1_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM1_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM1_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM1_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM2-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM2_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM2_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM2_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM2_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM2_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM3-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM3_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM3_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N,N,N),
CUSTOM3_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM3_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N),
CUSTOM3_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N,N,N))
// | jalr | renf2 |
// fp_val| | renx2 | | renf3 |
// | rocc| | | renx1 s_alu1 mem_val | | | wfd |
// val | | br| | | | s_alu2 | imm dw alu | mem_cmd mem_type| | | | div |
// | | | | | | | | | | | | | | | | | | | | | wxd | fence
// | | | | | | | | | | | | | | | | | | | | | | csr | | amo
// | | | | | | | | | | | | | | | | | | | | | | | | | |
CUSTOM0-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM0_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM0_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM0_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM0_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM0_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM1-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM1_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM1_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM1_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM1_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM1_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM2-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM2_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM2_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM2_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM2_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM2_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM3-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM3_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM3_RS1_RS2-> List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,N,CSR.N,N,N,N),
CUSTOM3_RD-> List(Y, N,Y,N,N,N,N,N,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM3_RD_RS1-> List(Y, N,Y,N,N,N,N,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N),
CUSTOM3_RD_RS1_RS2->List(Y, N,Y,N,N,N,Y,Y,A2_ZERO,A1_RS1, IMM_X, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,N,N,Y,CSR.N,N,N,N))
}
class Control extends CoreModule
@ -374,7 +380,8 @@ class Control extends CoreModule
val take_pc_wb = Bool()
val mem_misprediction = io.dpath.mem_misprediction && mem_reg_valid && (mem_ctrl.branch || mem_ctrl.jalr || mem_ctrl.jal)
val take_pc_mem = mem_reg_valid && (mem_misprediction || mem_reg_flush_pipe)
val want_take_pc_mem = mem_reg_valid && (mem_misprediction || mem_reg_flush_pipe)
val take_pc_mem = want_take_pc_mem && !io.dpath.mem_npc_misaligned
val take_pc_mem_wb = take_pc_wb || take_pc_mem
val take_pc = take_pc_mem_wb
val ctrl_killd = Bool()
@ -388,38 +395,19 @@ class Control extends CoreModule
val id_load_use = Bool()
val id_reg_fence = Reg(init=Bool(false))
val sr = io.dpath.status
var id_interrupts = (0 until sr.ip.getWidth).map(i => (sr.im(i) && sr.ip(i), UInt(BigInt(1) << (xLen-1) | i)))
val (id_interrupt_unmasked, id_interrupt_cause) = checkExceptions(id_interrupts)
val id_interrupt = io.dpath.status.ei && id_interrupt_unmasked
def checkExceptions(x: Seq[(Bool, UInt)]) =
(x.map(_._1).reduce(_||_), PriorityMux(x))
val fp_csrs = CSRs.fcsr :: CSRs.frm :: CSRs.fflags :: Nil
val legal_csrs = collection.mutable.LinkedHashSet(CSRs.all:_*)
if(params(BuildFPU).isEmpty)
legal_csrs --= fp_csrs
val id_csr_addr = io.dpath.inst(31,20)
val isLegalCSR = Vec.tabulate(1 << id_csr_addr.getWidth)(i => Bool(legal_csrs contains i))
val id_csr_en = id_ctrl.csr != CSR.N
val id_csr_fp = Bool(!params(BuildFPU).isEmpty) && id_csr_en && DecodeLogic(id_csr_addr, fp_csrs, CSRs.all.toSet -- fp_csrs)
val id_csr_wen = id_raddr1 != UInt(0) || !Vec(CSR.S, CSR.C).contains(id_ctrl.csr)
val id_csr_invalid = id_csr_en && !isLegalCSR(id_csr_addr)
val id_csr_privileged = id_csr_en &&
(id_csr_addr(11,10) === UInt(3) && id_csr_wen ||
id_csr_addr(11,10) === UInt(2) ||
id_csr_addr(11,10) === UInt(1) && !io.dpath.status.s ||
id_csr_addr(9,8) >= UInt(2) ||
id_csr_addr(9,8) === UInt(1) && !io.dpath.status.s && id_csr_wen)
// flush pipeline on CSR writes that may have side effects
val id_csr_flush = {
val safe_csrs = CSRs.sup0 :: CSRs.sup1 :: CSRs.epc :: Nil
id_csr_en && id_csr_wen && !DecodeLogic(id_csr_addr, safe_csrs, legal_csrs -- safe_csrs)
}
val id_system_insn = id_ctrl.csr === CSR.I
val id_csr_ren = (id_ctrl.csr === CSR.S || id_ctrl.csr === CSR.C) && id_raddr1 === UInt(0)
val id_csr = Mux(id_csr_ren, CSR.R, id_ctrl.csr)
val id_csr_addr = io.dpath.inst(31,20)
// this is overly conservative
val safe_csrs = CSRs.sscratch :: CSRs.sepc :: CSRs.mscratch :: CSRs.mepc :: CSRs.mcause :: CSRs.mbadaddr :: Nil
val legal_csrs = collection.mutable.LinkedHashSet(CSRs.all:_*)
val id_csr_flush = id_system_insn || (id_csr_en && !id_csr_ren && !DecodeLogic(id_csr_addr, safe_csrs, legal_csrs -- safe_csrs))
val id_illegal_insn = !id_ctrl.legal ||
id_ctrl.fp && !io.dpath.status.fs.orR ||
id_ctrl.rocc && !io.dpath.status.xs.orR
// stall decode for fences (now, for AMO.aq; later, for AMO.rl and FENCE)
val id_amo_aq = io.dpath.inst(26)
val id_amo_rl = io.dpath.inst(25)
@ -430,26 +418,24 @@ class Control extends CoreModule
mem_reg_valid && mem_ctrl.rocc || wb_reg_valid && wb_ctrl.rocc)
id_reg_fence := id_fence_next || id_reg_fence && id_mem_busy
val id_do_fence = id_rocc_busy && id_ctrl.fence ||
id_mem_busy && (id_ctrl.amo && id_amo_aq || id_ctrl.fence_i || id_reg_fence && (id_ctrl.mem || id_ctrl.rocc) || id_csr_flush)
id_mem_busy && (id_ctrl.amo && id_amo_aq || id_ctrl.fence_i || id_reg_fence && (id_ctrl.mem || id_ctrl.rocc) || id_csr_en)
def checkExceptions(x: Seq[(Bool, UInt)]) =
(x.map(_._1).reduce(_||_), PriorityMux(x))
val (id_xcpt, id_cause) = checkExceptions(List(
(id_interrupt, id_interrupt_cause),
(io.imem.resp.bits.xcpt_ma, UInt(Causes.misaligned_fetch)),
(io.dpath.interrupt, io.dpath.interrupt_cause),
(io.imem.resp.bits.xcpt_if, UInt(Causes.fault_fetch)),
(!id_ctrl.legal || id_csr_invalid, UInt(Causes.illegal_instruction)),
(id_csr_privileged, UInt(Causes.privileged_instruction)),
(id_ctrl.sret && !io.dpath.status.s, UInt(Causes.privileged_instruction)),
((id_ctrl.fp || id_csr_fp) && !io.dpath.status.ef,UInt(Causes.fp_disabled)),
(id_ctrl.scall, UInt(Causes.syscall)),
(id_ctrl.rocc && !io.dpath.status.er, UInt(Causes.accelerator_disabled))))
(id_illegal_insn, UInt(Causes.illegal_instruction))))
ex_reg_valid := !ctrl_killd
ex_reg_xcpt := !ctrl_killd && id_xcpt
ex_reg_xcpt_interrupt := id_interrupt && !take_pc && io.imem.resp.valid
ex_reg_xcpt_interrupt := io.dpath.interrupt && !take_pc && io.imem.resp.valid
when (id_xcpt) { ex_reg_cause := id_cause }
when (!ctrl_killd) {
ex_ctrl := id_ctrl
ex_ctrl.csr := id_csr
ex_reg_btb_hit := io.imem.btb_resp.valid
when (io.imem.btb_resp.valid) { ex_reg_btb_resp := io.imem.btb_resp.bits }
ex_reg_flush_pipe := id_ctrl.fence_i || id_csr_flush
@ -488,6 +474,7 @@ class Control extends CoreModule
val (mem_xcpt, mem_cause) = checkExceptions(List(
(mem_reg_xcpt_interrupt || mem_reg_xcpt, mem_reg_cause),
(want_take_pc_mem && io.dpath.mem_npc_misaligned, UInt(Causes.misaligned_fetch)),
(mem_reg_valid && mem_ctrl.mem && io.dmem.xcpt.ma.st, UInt(Causes.misaligned_store)),
(mem_reg_valid && mem_ctrl.mem && io.dmem.xcpt.ma.ld, UInt(Causes.misaligned_load)),
(mem_reg_valid && mem_ctrl.mem && io.dmem.xcpt.pf.st, UInt(Causes.fault_store)),
@ -551,18 +538,17 @@ class Control extends CoreModule
// write CAUSE CSR on an exception
io.dpath.exception := wb_reg_xcpt
io.dpath.cause := wb_reg_cause
io.dpath.badvaddr_wen := wb_reg_xcpt // don't care for non-memory exceptions
val wb_xcpt = wb_reg_xcpt || io.dpath.csr_xcpt
// control transfer from ex/wb
take_pc_wb := replay_wb || wb_reg_xcpt || io.dpath.sret
take_pc_wb := replay_wb || wb_xcpt
io.dpath.sel_pc :=
Mux(wb_reg_xcpt, PC_PCR, // exception
Mux(wb_xcpt, PC_PCR, // exception or [m|s]ret
Mux(replay_wb, PC_WB, // replay
Mux(wb_reg_valid && wb_ctrl.sret, PC_PCR, // sret instruction
PC_MEM)))
PC_MEM))
io.imem.btb_update.valid := mem_reg_valid && io.dpath.mem_misprediction && ((mem_ctrl.branch && io.dpath.mem_br_taken) || mem_ctrl.jalr || mem_ctrl.jal) && !take_pc_wb
io.imem.btb_update.valid := mem_reg_valid && !io.dpath.mem_npc_misaligned && io.dpath.mem_misprediction && ((mem_ctrl.branch && io.dpath.mem_br_taken) || mem_ctrl.jalr || mem_ctrl.jal) && !take_pc_wb
io.imem.btb_update.bits.prediction.valid := mem_reg_btb_hit
io.imem.btb_update.bits.prediction.bits := mem_reg_btb_resp
io.imem.btb_update.bits.isJump := mem_ctrl.jal || mem_ctrl.jalr
@ -574,7 +560,7 @@ class Control extends CoreModule
io.imem.bht_update.bits.prediction.valid := mem_reg_btb_hit
io.imem.bht_update.bits.prediction.bits := mem_reg_btb_resp
io.imem.ras_update.valid := io.imem.btb_update.bits.isJump && !take_pc_wb
io.imem.ras_update.valid := io.imem.btb_update.bits.isJump && !io.dpath.mem_npc_misaligned && !take_pc_wb
io.imem.ras_update.bits.isCall := mem_ctrl.wxd && io.dpath.mem_waddr(0)
io.imem.ras_update.bits.isReturn := mem_ctrl.jalr && io.dpath.mem_rs1_ra
io.imem.ras_update.bits.prediction.valid := mem_reg_btb_hit
@ -652,7 +638,7 @@ class Control extends CoreModule
id_ctrl.mem && !io.dmem.req.ready ||
Bool(!params(BuildRoCC).isEmpty) && wb_reg_rocc_pending && id_ctrl.rocc && !io.rocc.cmd.ready ||
id_do_fence
val ctrl_draind = id_interrupt
val ctrl_draind = io.dpath.interrupt
ctrl_killd := !io.imem.resp.valid || take_pc || ctrl_stalld || ctrl_draind
io.dpath.killd := take_pc || ctrl_stalld && !ctrl_draind
@ -665,10 +651,9 @@ class Control extends CoreModule
io.dpath.mem_ctrl := mem_ctrl
io.dpath.ex_valid := ex_reg_valid
io.dpath.ll_ready := !(wb_reg_valid && wb_ctrl.wxd)
io.dpath.retire := wb_reg_valid && !replay_wb
io.dpath.retire := wb_reg_valid && !replay_wb && !io.dpath.csr_xcpt
io.dpath.wb_wen := io.dpath.retire && wb_ctrl.wxd
io.dpath.csr := Mux(wb_reg_valid, wb_ctrl.csr, CSR.N)
io.dpath.sret := wb_reg_valid && wb_ctrl.sret && !replay_wb
io.dpath.csr_cmd := Mux(wb_reg_valid, wb_ctrl.csr, CSR.N)
io.dpath.killm := killm_common
io.fpu.valid := !ctrl_killd && id_ctrl.fp
@ -680,9 +665,9 @@ class Control extends CoreModule
io.dmem.req.bits.cmd := ex_ctrl.mem_cmd
io.dmem.req.bits.typ := ex_ctrl.mem_type
io.dmem.req.bits.phys := Bool(false)
io.dmem.sret := io.dpath.sret
io.dmem.sret := wb_xcpt // obviously not an sret, but sufficient
io.rocc.cmd.valid := wb_rocc_val
io.rocc.exception := wb_reg_xcpt && sr.er
io.rocc.s := sr.s
io.rocc.exception := wb_xcpt && io.dpath.status.xs != 0
io.rocc.s := io.dpath.status.prv != 0 // should we just pass all of mstatus?
}

12
rocket/src/main/scala/dpath.scala
View File

@ -72,7 +72,7 @@ class Datapath extends CoreModule
// immediate generation
def imm(sel: Bits, inst: Bits) = {
val sign = inst(31).toSInt
val sign = Mux(sel === IMM_Z, SInt(0), inst(31).toSInt)
val b30_20 = Mux(sel === IMM_U, inst(30,20).toSInt, sign)
val b19_12 = Mux(sel != IMM_U && sel != IMM_UJ, sign, inst(19,12).toSInt)
val b11 = Mux(sel === IMM_U || sel === IMM_Z, SInt(0),
@ -172,7 +172,6 @@ class Datapath extends CoreModule
pcr.io <> io.fpu
pcr.io.rocc <> io.rocc
pcr.io.pc := wb_reg_pc
io.ctrl.csr_replay := pcr.io.replay
pcr.io.uarch_counters.foreach(_ := Bool(false))
io.ptw.ptbr := pcr.io.ptbr
@ -232,6 +231,7 @@ class Datapath extends CoreModule
Mux(io.ctrl.mem_ctrl.jal, imm(IMM_UJ, mem_reg_inst), SInt(4)))
val mem_npc = Mux(io.ctrl.mem_ctrl.jalr, Cat(vaSign(mem_reg_wdata, mem_reg_wdata), mem_reg_wdata(vaddrBits-1,0)), mem_br_target).toUInt
io.ctrl.mem_misprediction := mem_npc != ex_reg_pc || !io.ctrl.ex_valid
io.ctrl.mem_npc_misaligned := mem_npc(1)
io.ctrl.mem_rs1_ra := mem_reg_inst(19,15) === 1
val mem_int_wdata = Mux(io.ctrl.mem_ctrl.jalr, mem_br_target, mem_reg_wdata).toUInt
@ -246,7 +246,7 @@ class Datapath extends CoreModule
}
wb_wdata := Mux(dmem_resp_valid && dmem_resp_xpu, io.dmem.resp.bits.data_subword,
Mux(io.ctrl.ll_wen, ll_wdata,
Mux(io.ctrl.csr != CSR.N, pcr.io.rw.rdata,
Mux(io.ctrl.csr_cmd != CSR.N, pcr.io.rw.rdata,
wb_reg_wdata)))
val wb_wen = io.ctrl.ll_wen || io.ctrl.wb_wen
@ -259,10 +259,8 @@ class Datapath extends CoreModule
// processor control regfile write
pcr.io.rw.addr := wb_reg_inst(31,20)
pcr.io.rw.cmd := io.ctrl.csr
pcr.io.rw.wdata := Mux(io.ctrl.csr === CSR.S, pcr.io.rw.rdata | wb_reg_wdata,
Mux(io.ctrl.csr === CSR.C, pcr.io.rw.rdata & ~wb_reg_wdata,
wb_reg_wdata))
pcr.io.rw.cmd := io.ctrl.csr_cmd
pcr.io.rw.wdata := wb_reg_wdata
io.rocc.cmd.bits.inst := new RoCCInstruction().fromBits(wb_reg_inst)
io.rocc.cmd.bits.rs1 := wb_reg_wdata

1
rocket/src/main/scala/icache.scala
View File

@ -102,6 +102,7 @@ class Frontend(btb_updates_out_of_order: Boolean = false) extends FrontendModule
tlb.io.req.bits.asid := UInt(0)
tlb.io.req.bits.passthrough := Bool(false)
tlb.io.req.bits.instruction := Bool(true)
tlb.io.req.bits.store := Bool(false)
icache.io.mem <> io.mem
icache.io.req.valid := !stall && !s0_same_block

121
rocket/src/main/scala/instructions.scala
View File

@ -95,7 +95,12 @@ object Instructions {
def SC_D = Bits("b00011????????????011?????0101111")
def SCALL = Bits("b00000000000000000000000001110011")
def SBREAK = Bits("b00000000000100000000000001110011")
def SRET = Bits("b10000000000000000000000001110011")
def SRET = Bits("b00010000001000000000000001110011")
def SFENCE_VM = Bits("b000100000100?????000000001110011")
def HCALL = Bits("b00010000000000000000000001110011")
def MCALL = Bits("b00100000000000000000000001110011")
def MRET = Bits("b00110000001000000000000001110011")
def MRTS = Bits("b00110000100100000000000001110011")
def CSRRW = Bits("b?????????????????001?????1110011")
def CSRRS = Bits("b?????????????????010?????1110011")
def CSRRC = Bits("b?????????????????011?????1110011")
@ -193,29 +198,27 @@ object Causes {
val misaligned_fetch = 0x0
val fault_fetch = 0x1
val illegal_instruction = 0x2
val privileged_instruction = 0x3
val fp_disabled = 0x4
val syscall = 0x6
val scall = 0x4
val hcall = 0x5
val mcall = 0x6
val breakpoint = 0x7
val misaligned_load = 0x8
val misaligned_store = 0x9
val fault_load = 0xa
val fault_load = 0x9
val misaligned_store = 0xa
val fault_store = 0xb
val accelerator_disabled = 0xc
val all = {
val res = collection.mutable.ArrayBuffer[Int]()
res += misaligned_fetch
res += fault_fetch
res += illegal_instruction
res += privileged_instruction
res += fp_disabled
res += syscall
res += scall
res += hcall
res += mcall
res += breakpoint
res += misaligned_load
res += misaligned_store
res += fault_load
res += misaligned_store
res += fault_store
res += accelerator_disabled
res.toArray
}
}
@ -223,29 +226,10 @@ object CSRs {
val fflags = 0x1
val frm = 0x2
val fcsr = 0x3
val stats = 0xc0
val sup0 = 0x500
val sup1 = 0x501
val epc = 0x502
val badvaddr = 0x503
val ptbr = 0x504
val asid = 0x505
val count = 0x506
val compare = 0x507
val evec = 0x508
val cause = 0x509
val status = 0x50a
val hartid = 0x50b
val impl = 0x50c
val fatc = 0x50d
val send_ipi = 0x50e
val clear_ipi = 0x50f
val reset = 0x51d
val tohost = 0x51e
val fromhost = 0x51f
val cycle = 0xc00
val time = 0xc01
val instret = 0xc02
val stats = 0xc0
val uarch0 = 0xcc0
val uarch1 = 0xcc1
val uarch2 = 0xcc2
@ -262,38 +246,43 @@ object CSRs {
val uarch13 = 0xccd
val uarch14 = 0xcce
val uarch15 = 0xccf
val counth = 0x586
val sstatus = 0x100
val stvec = 0x101
val stimecmp = 0x121
val sscratch = 0x140
val sepc = 0x141
val sptbr = 0x188
val sasid = 0x189
val scycle = 0x900
val stime = 0x901
val sinstret = 0x902
val scause = 0xd40
val sbadaddr = 0xd41
val mstatus = 0x300
val mscratch = 0x340
val mepc = 0x341
val mcause = 0x342
val mbadaddr = 0x343
val reset = 0x780
val tohost = 0x781
val fromhost = 0x782
val send_ipi = 0x783
val hartid = 0xfc0
val cycleh = 0xc80
val timeh = 0xc81
val instreth = 0xc82
val scycleh = 0x980
val stimeh = 0x981
val sinstreth = 0x982
val all = {
val res = collection.mutable.ArrayBuffer[Int]()
res += fflags
res += frm
res += fcsr
res += stats
res += sup0
res += sup1
res += epc
res += badvaddr
res += ptbr
res += asid
res += count
res += compare
res += evec
res += cause
res += status
res += hartid
res += impl
res += fatc
res += send_ipi
res += clear_ipi
res += reset
res += tohost
res += fromhost
res += cycle
res += time
res += instret
res += stats
res += uarch0
res += uarch1
res += uarch2
@ -310,14 +299,38 @@ object CSRs {
res += uarch13
res += uarch14
res += uarch15
res += sstatus
res += stvec
res += stimecmp
res += sscratch
res += sepc
res += sptbr
res += sasid
res += scycle
res += stime
res += sinstret
res += scause
res += sbadaddr
res += mstatus
res += mscratch
res += mepc
res += mcause
res += mbadaddr
res += reset
res += tohost
res += fromhost
res += send_ipi
res += hartid
res.toArray
}
val all32 = {
val res = collection.mutable.ArrayBuffer(all:_*)
res += counth
res += cycleh
res += timeh
res += instreth
res += scycleh
res += stimeh
res += sinstreth
res.toArray
}
}

1
rocket/src/main/scala/nbdcache.scala
View File

@ -641,6 +641,7 @@ class HellaCache extends L1HellaCacheModule {
dtlb.io.req.bits.asid := UInt(0)
dtlb.io.req.bits.vpn := s1_req.addr >> pgIdxBits
dtlb.io.req.bits.instruction := Bool(false)
dtlb.io.req.bits.store := s1_write
when (!dtlb.io.req.ready && !io.cpu.req.bits.phys) { io.cpu.req.ready := Bool(false) }
when (io.cpu.req.valid) {

2
rocket/src/main/scala/package.scala
View File

@ -3,5 +3,5 @@
package object rocket extends
rocket.constants.ScalarOpConstants
{
val START_ADDR = 0x2000
val START_ADDR = 0x100
}

63
rocket/src/main/scala/ptw.scala
View File

@ -6,23 +6,29 @@ import Chisel._
import uncore._
import Util._
class PTWReq extends CoreBundle {
val addr = UInt(width = vpnBits)
val perm = Bits(width = permBits)
}
class PTWResp extends CoreBundle {
val error = Bool()
val ppn = UInt(width = ppnBits)
val perm = Bits(width = permBits)
val dirty = Bool()
}
class TLBPTWIO extends CoreBundle {
val req = Decoupled(UInt(width = vpnBits))
val req = Decoupled(new PTWReq)
val resp = Valid(new PTWResp).flip
val status = new Status().asInput
val status = new MStatus().asInput
val invalidate = Bool(INPUT)
}
class DatapathPTWIO extends CoreBundle {
val ptbr = UInt(INPUT, paddrBits)
val invalidate = Bool(INPUT)
val status = new Status().asInput
val status = new MStatus().asInput
}
class PTW(n: Int) extends CoreModule
@ -37,48 +43,54 @@ class PTW(n: Int) extends CoreModule
val bitsPerLevel = vpnBits/levels
require(vpnBits == levels * bitsPerLevel)
val s_ready :: s_req :: s_wait :: s_done :: s_error :: Nil = Enum(UInt(), 5)
val s_ready :: s_req :: s_wait :: s_set_dirty :: s_wait_dirty :: s_done :: s_error :: Nil = Enum(UInt(), 7)
val state = Reg(init=s_ready)
val count = Reg(UInt(width = log2Up(levels)))
val r_req_vpn = Reg(Bits())
val r_req = Reg(new PTWReq)
val r_req_dest = Reg(Bits())
val r_pte = Reg(Bits())
val vpn_idx = Vec((0 until levels).map(i => (r_req_vpn >> (levels-i-1)*bitsPerLevel)(bitsPerLevel-1,0)))(count)
val vpn_idx = Vec((0 until levels).map(i => (r_req.addr >> (levels-i-1)*bitsPerLevel)(bitsPerLevel-1,0)))(count)
val arb = Module(new RRArbiter(UInt(width = vpnBits), n))
val arb = Module(new RRArbiter(new PTWReq, n))
arb.io.in <> io.requestor.map(_.req)
arb.io.out.ready := state === s_ready
val pte = io.mem.resp.bits.data
when (arb.io.out.fire()) {
r_req_vpn := arb.io.out.bits
r_req := arb.io.out.bits
r_req_dest := arb.io.chosen
r_pte := Cat(io.dpath.ptbr(paddrBits-1,pgIdxBits), io.mem.resp.bits.data(pgIdxBits-1,0))
r_pte := Cat(io.dpath.ptbr(paddrBits-1,pgIdxBits), pte(pgIdxBits-1,0))
}
when (io.mem.resp.valid) {
r_pte := io.mem.resp.bits.data
val perm_ok = (pte(8,3) & r_req.perm).orR
val is_store = r_req.perm(1) || r_req.perm(4)
val set_dirty_bit = perm_ok && !pte(1) && (!pte(9) || (is_store && !pte(10)))
when (io.mem.resp.valid && state === s_wait && !set_dirty_bit) {
r_pte := pte
}
io.mem.req.valid := state === s_req
io.mem.req.valid := state === s_req || state === s_set_dirty
io.mem.req.bits.phys := Bool(true)
io.mem.req.bits.cmd := M_XRD
io.mem.req.bits.cmd := Mux(state === s_set_dirty, M_XA_OR, M_XRD)
io.mem.req.bits.typ := MT_D
io.mem.req.bits.addr := Cat(r_pte(paddrBits-1,pgIdxBits), vpn_idx).toUInt << log2Up(xLen/8)
io.mem.req.bits.kill := Bool(false)
io.mem.req.bits.data := UInt(1<<9) | Mux(is_store, UInt(1<<10), UInt(0))
val resp_val = state === s_done || state === s_error
val resp_err = state === s_error || state === s_wait
val resp_err = state === s_error
val resp_val = state === s_done || resp_err
val r_resp_ppn = io.mem.req.bits.addr >> UInt(pgIdxBits)
val resp_ppn = Vec((0 until levels-1).map(i => Cat(r_resp_ppn >> bitsPerLevel*(levels-i-1), r_req_vpn(bitsPerLevel*(levels-i-1)-1,0))) :+ r_resp_ppn)(count)
val resp_ppn = Vec((0 until levels-1).map(i => Cat(r_resp_ppn >> bitsPerLevel*(levels-i-1), r_req.addr(bitsPerLevel*(levels-i-1)-1,0))) :+ r_resp_ppn)(count)
for (i <- 0 until io.requestor.size) {
val me = r_req_dest === UInt(i)
io.requestor(i).resp.valid := resp_val && me
io.requestor(i).resp.bits.error := resp_err
io.requestor(i).resp.bits.perm := r_pte(8,3)
io.requestor(i).resp.bits.dirty := r_pte(10)
io.requestor(i).resp.bits.ppn := resp_ppn.toUInt
io.requestor(i).invalidate := io.dpath.invalidate
io.requestor(i).status := io.dpath.status
@ -103,8 +115,10 @@ class PTW(n: Int) extends CoreModule
}
when (io.mem.resp.valid) {
state := s_error
when (io.mem.resp.bits.data(0)) {
when (!io.mem.resp.bits.data(1)) {
when (pte(0)) {
when (set_dirty_bit) {
state := s_set_dirty
}.elsewhen (!pte(1)) {
state := s_done
}.elsewhen (count < levels-1) {
state := s_req
@ -113,6 +127,19 @@ class PTW(n: Int) extends CoreModule
}
}
}
is (s_set_dirty) {
when (io.mem.req.ready) {
state := s_wait_dirty
}
}
is (s_wait_dirty) {
when (io.mem.resp.bits.nack) {
state := s_set_dirty
}
when (io.mem.resp.valid) {
state := s_req
}
}
is (s_done) {
state := s_ready
}

60
rocket/src/main/scala/tlb.scala
View File

@ -3,6 +3,7 @@
package rocket
import Chisel._
import Util._
import uncore._
import scala.math._
@ -19,7 +20,7 @@ abstract class TLBModule extends Module with TLBParameters
class CAMIO extends TLBBundle {
val clear = Bool(INPUT)
val clear_hit = Bool(INPUT)
val clear_mask = Bits(INPUT, entries)
val tag = Bits(INPUT, camTagBits)
val hit = Bool(OUTPUT)
val hits = UInt(OUTPUT, entries)
@ -40,10 +41,7 @@ class RocketCAM extends TLBModule {
cam_tags(io.write_addr) := io.write_tag
}
when (io.clear) {
vb_array := Bits(0, entries)
}
.elsewhen (io.clear_hit) {
vb_array := vb_array & ~io.hits
vb_array := vb_array & ~io.clear_mask
}
val hits = (0 until entries).map(i => vb_array(i) && cam_tags(i) === io.tag)
@ -81,6 +79,7 @@ class TLBReq extends CoreBundle {
val vpn = UInt(width = vpnBits+1)
val passthrough = Bool()
val instruction = Bool()
val store = Bool()
}
class TLBRespNoHitIndex extends CoreBundle {
@ -107,36 +106,38 @@ class TLB extends TLBModule {
val state = Reg(init=s_ready)
val r_refill_tag = Reg(UInt())
val r_refill_waddr = Reg(UInt())
val r_req = Reg(new TLBReq)
val tag_cam = Module(new RocketCAM)
val tag_ram = Mem(io.ptw.resp.bits.ppn.clone, entries)
val lookup_tag = Cat(io.req.bits.asid, io.req.bits.vpn).toUInt
tag_cam.io.clear := io.ptw.invalidate
tag_cam.io.clear_hit := io.req.fire() && Mux(io.req.bits.instruction, io.resp.xcpt_if, io.resp.xcpt_ld && io.resp.xcpt_st)
tag_cam.io.tag := lookup_tag
tag_cam.io.write := state === s_wait && io.ptw.resp.valid
tag_cam.io.write_tag := r_refill_tag
tag_cam.io.write_addr := r_refill_waddr
val tag_hit = tag_cam.io.hit
val tag_hit_addr = OHToUInt(tag_cam.io.hits)
// permission bit arrays
val valid_array = Reg(Bits()) // V bit of PTE (not equivalent to CAM tag valid bit!)
val ur_array = Reg(Bits()) // user read permission
val uw_array = Reg(Bits()) // user write permission
val ux_array = Reg(Bits()) // user execute permission
val sr_array = Reg(Bits()) // supervisor read permission
val sw_array = Reg(Bits()) // supervisor write permission
val sx_array = Reg(Bits()) // supervisor execute permission
val dirty_array = Reg(Bits()) // PTE dirty bit
when (io.ptw.resp.valid) {
val perm = io.ptw.resp.bits.perm & ~io.ptw.resp.bits.error.toSInt
tag_ram(r_refill_waddr) := io.ptw.resp.bits.ppn
val perm = (!io.ptw.resp.bits.error).toSInt & io.ptw.resp.bits.perm
ur_array := ur_array.bitSet(r_refill_waddr, perm(0))
valid_array := valid_array.bitSet(r_refill_waddr, !io.ptw.resp.bits.error)
ur_array := ur_array.bitSet(r_refill_waddr, perm(0) || perm(2))
uw_array := uw_array.bitSet(r_refill_waddr, perm(1))
ux_array := ux_array.bitSet(r_refill_waddr, perm(2))
sr_array := sr_array.bitSet(r_refill_waddr, perm(3))
sr_array := sr_array.bitSet(r_refill_waddr, perm(3) || perm(5))
sw_array := sw_array.bitSet(r_refill_waddr, perm(4))
sx_array := sx_array.bitSet(r_refill_waddr, perm(5))
dirty_array := dirty_array.bitSet(r_refill_waddr, io.ptw.resp.bits.dirty)
}
// high if there are any unused (invalid) entries in the TLB
@ -144,30 +145,51 @@ class TLB extends TLBModule {
val invalid_entry = PriorityEncoder(~tag_cam.io.valid_bits)
val plru = new PseudoLRU(entries)
val repl_waddr = Mux(has_invalid_entry, invalid_entry, plru.replace)
val priv = Mux(io.ptw.status.prv === PRV_M && !io.req.bits.instruction, io.ptw.status.mprv, io.ptw.status.prv)
val priv_s = priv === PRV_S
val priv_uses_vm = priv <= PRV_S
val req_xwr = Cat(!r_req.store, r_req.store, !(r_req.instruction || r_req.store))
val req_perm = Cat(req_xwr & priv_s.toSInt, req_xwr & ~priv_s.toSInt)
val r_array = Mux(priv_s, sr_array, ur_array)
val w_array = Mux(priv_s, sw_array, uw_array)
val x_array = Mux(priv_s, sx_array, ux_array)
val vm_enabled = io.ptw.status.vm(2) && priv_uses_vm
val bad_va = io.req.bits.vpn(vpnBits) != io.req.bits.vpn(vpnBits-1)
val tlb_hit = io.ptw.status.vm && tag_hit
val tlb_miss = io.ptw.status.vm && !tag_hit && !bad_va
// it's only a store hit if the dirty bit is set
val tag_hits = tag_cam.io.hits & (dirty_array | ~(io.req.bits.store.toSInt & w_array))
val tag_hit = tag_hits.orR
val tlb_hit = vm_enabled && tag_hit
val tlb_miss = vm_enabled && !tag_hit && !bad_va
when (io.req.valid && tlb_hit) {
plru.access(OHToUInt(tag_cam.io.hits))
}
io.req.ready := state === s_ready
io.resp.xcpt_ld := bad_va || tlb_hit && !Mux(io.ptw.status.s, (sr_array & tag_cam.io.hits).orR, (ur_array & tag_cam.io.hits).orR)
io.resp.xcpt_st := bad_va || tlb_hit && !Mux(io.ptw.status.s, (sw_array & tag_cam.io.hits).orR, (uw_array & tag_cam.io.hits).orR)
io.resp.xcpt_if := bad_va || tlb_hit && !Mux(io.ptw.status.s, (sx_array & tag_cam.io.hits).orR, (ux_array & tag_cam.io.hits).orR)
io.resp.xcpt_ld := bad_va || tlb_hit && !(r_array & tag_cam.io.hits).orR
io.resp.xcpt_st := bad_va || tlb_hit && !(w_array & tag_cam.io.hits).orR
io.resp.xcpt_if := bad_va || tlb_hit && !(x_array & tag_cam.io.hits).orR
io.resp.miss := tlb_miss
io.resp.ppn := Mux(io.ptw.status.vm && !io.req.bits.passthrough, Mux1H(tag_cam.io.hits, tag_ram), io.req.bits.vpn(params(PPNBits)-1,0))
io.resp.ppn := Mux(vm_enabled && !io.req.bits.passthrough, Mux1H(tag_cam.io.hits, tag_ram), io.req.bits.vpn(params(PPNBits)-1,0))
io.resp.hit_idx := tag_cam.io.hits
// clear invalid entries on access, or all entries on a TLB flush
tag_cam.io.clear := io.ptw.invalidate || io.req.fire()
tag_cam.io.clear_mask := ~valid_array | (tag_cam.io.hits & ~tag_hits)
when (io.ptw.invalidate) { tag_cam.io.clear_mask := SInt(-1) }
io.ptw.req.valid := state === s_request
io.ptw.req.bits := r_refill_tag
io.ptw.req.bits.addr := r_refill_tag
io.ptw.req.bits.perm := req_perm
when (io.req.fire() && tlb_miss) {
state := s_request
r_refill_tag := lookup_tag
r_refill_waddr := repl_waddr
r_req := io.req.bits
}
when (state === s_request) {
when (io.ptw.invalidate) {