1package xiangshan.frontend 2 3import chisel3._ 4import chisel3.util._ 5import device.RAMHelper 6import xiangshan._ 7import utils._ 8 9trait HasIFUConst { this: XSModule => 10 val resetVector = 0x80000000L//TODO: set reset vec 11 val groupAlign = log2Up(FetchWidth * 4 * 2) 12 def groupPC(pc: UInt): UInt = Cat(pc(VAddrBits-1, groupAlign), 0.U(groupAlign.W)) 13 // each 1 bit in mask stands for 2 Bytes 14 def mask(pc: UInt): UInt = (Fill(PredictWidth * 2, 1.U(1.W)) >> pc(groupAlign - 1, 1))(PredictWidth - 1, 0) 15 def snpc(pc: UInt): UInt = pc + (PopCount(mask(pc)) << 1) 16} 17 18class IFUIO extends XSBundle 19{ 20 val fetchPacket = DecoupledIO(new FetchPacket) 21 val redirect = Flipped(ValidIO(new Redirect)) 22 val outOfOrderBrInfo = Flipped(ValidIO(new BranchUpdateInfo)) 23 val inOrderBrInfo = Flipped(ValidIO(new BranchUpdateInfo)) 24 val icacheReq = DecoupledIO(new FakeIcacheReq) 25 val icacheResp = Flipped(DecoupledIO(new FakeIcacheResp)) 26 val icacheFlush = Output(UInt(2.W)) 27} 28 29 30class IFU extends XSModule with HasIFUConst 31{ 32 val io = IO(new IFUIO) 33 val bpu = BPU(EnableBPU) 34 val pd = Module(new PreDecode) 35 36 val if2_redirect, if3_redirect, if4_redirect = WireInit(false.B) 37 val if1_flush, if2_flush, if3_flush, if4_flush = WireInit(false.B) 38 39 if4_flush := io.redirect.valid 40 if3_flush := if4_flush || if4_redirect 41 if2_flush := if3_flush || if3_redirect 42 if1_flush := if2_flush || if2_redirect 43 44 //********************** IF1 ****************************// 45 val if1_valid = !reset.asBool 46 val if1_npc = WireInit(0.U(VAddrBits.W)) 47 val if2_ready = WireInit(false.B) 48 val if1_fire = if1_valid && (if2_ready || if1_flush) && io.icacheReq.ready 49 50 // val extHist = VecInit(Fill(ExtHistoryLength, RegInit(0.U(1.W)))) 51 val extHist = RegInit(VecInit(Seq.fill(ExtHistoryLength)(0.U(1.W)))) 52 val headPtr = RegInit(0.U(log2Up(ExtHistoryLength).W)) 53 val shiftPtr = WireInit(false.B) 54 val newPtr = Wire(UInt(log2Up(ExtHistoryLength).W)) 55 val ptr = Mux(shiftPtr, newPtr, headPtr) 56 when (shiftPtr) { headPtr := newPtr } 57 val hist = Wire(Vec(HistoryLength, UInt(1.W))) 58 for (i <- 0 until HistoryLength) { 59 hist(i) := extHist(ptr + i.U) 60 } 61 62 newPtr := headPtr 63 shiftPtr := false.B 64 65 //********************** IF2 ****************************// 66 val if2_valid = RegEnable(next = if1_valid, init = false.B, enable = if1_fire) 67 val if3_ready = WireInit(false.B) 68 val if2_fire = if2_valid && if3_ready && !if2_flush 69 val if2_pc = RegEnable(next = if1_npc, init = resetVector.U, enable = if1_fire) 70 val if2_snpc = snpc(if2_pc) 71 val if2_histPtr = RegEnable(ptr, if1_fire) 72 if2_ready := if2_fire || !if2_valid || if2_flush 73 when (if2_flush) { if2_valid := if1_fire } 74 .elsewhen (if1_fire) { if2_valid := if1_valid } 75 .elsewhen (if2_fire) { if2_valid := false.B } 76 77 when (RegNext(reset.asBool) && !reset.asBool) { 78 if1_npc := resetVector.U(VAddrBits.W) 79 }.elsewhen (if2_fire) { 80 if1_npc := if2_snpc 81 }.otherwise { 82 if1_npc := RegNext(if1_npc) 83 } 84 85 val if2_bp = bpu.io.out(0).bits 86 if2_redirect := if2_fire && bpu.io.out(0).valid && if2_bp.redirect// && !if2_bp.saveHalfRVI 87 when (if2_redirect) { 88 if1_npc := if2_bp.target 89 } 90 91 when (if2_fire && (if2_bp.taken || if2_bp.hasNotTakenBrs)) { 92 shiftPtr := true.B 93 newPtr := headPtr - 1.U 94 hist(0) := if2_bp.taken.asUInt 95 extHist(newPtr) := if2_bp.taken.asUInt 96 } 97 98 //********************** IF3 ****************************// 99 val if3_valid = RegEnable(next = if2_valid, init = false.B, enable = if2_fire) 100 val if4_ready = WireInit(false.B) 101 val if3_fire = if3_valid && if4_ready && io.icacheResp.valid && !if3_flush 102 val if3_pc = RegEnable(if2_pc, if2_fire) 103 val if3_histPtr = RegEnable(if2_histPtr, if2_fire) 104 if3_ready := if3_fire || !if3_valid || if3_flush 105 when (if3_flush) { if3_valid := false.B } 106 .elsewhen (if2_fire) { if3_valid := if2_valid } 107 .elsewhen (if3_fire) { if3_valid := false.B } 108 109 val if3_bp = bpu.io.out(1).bits 110 111 class PrevHalfInstr extends Bundle { 112 val valid = Bool() 113 val taken = Bool() 114 val fetchpc = UInt(VAddrBits.W) // only for debug 115 val idx = UInt(VAddrBits.W) // only for debug 116 val pc = UInt(VAddrBits.W) 117 val target = UInt(VAddrBits.W) 118 val instr = UInt(16.W) 119 } 120 121 val if3_prevHalfInstr = RegInit(0.U.asTypeOf(new PrevHalfInstr)) 122 val if4_prevHalfInstr = Wire(new PrevHalfInstr) 123 when (if4_prevHalfInstr.valid) { 124 if3_prevHalfInstr := if4_prevHalfInstr 125 } 126 val prevHalfInstr = Mux(if4_prevHalfInstr.valid, if4_prevHalfInstr, if3_prevHalfInstr) 127 128 val if3_hasPrevHalfInstr = prevHalfInstr.valid && (prevHalfInstr.pc + 2.U) === if3_pc 129 if3_redirect := if3_fire && bpu.io.out(1).valid && (if3_hasPrevHalfInstr && prevHalfInstr.taken || if3_bp.redirect/* && !if3_bp.saveHalfRVI*/ ) 130 when (if3_redirect) { 131 if1_npc := Mux(if3_hasPrevHalfInstr && prevHalfInstr.taken, prevHalfInstr.target, if3_bp.target) 132 } 133 134 when (if3_fire && if3_redirect) { 135 shiftPtr := true.B 136 newPtr := Mux(if3_hasPrevHalfInstr && prevHalfInstr.taken || if3_bp.taken || if3_bp.hasNotTakenBrs, if3_histPtr - 1.U, if3_histPtr) 137 hist(0) := Mux(if3_hasPrevHalfInstr && prevHalfInstr.taken || if3_bp.taken || if3_bp.hasNotTakenBrs, 138 (if3_hasPrevHalfInstr && prevHalfInstr.taken || if3_bp.taken).asUInt, 139 extHist(if3_histPtr)) 140 extHist(newPtr) := Mux(if3_hasPrevHalfInstr && prevHalfInstr.taken || if3_bp.taken || if3_bp.hasNotTakenBrs, 141 (if3_hasPrevHalfInstr && prevHalfInstr.taken || if3_bp.taken).asUInt, 142 extHist(if3_histPtr)) 143 } 144 145 146 147 // val prev_half_valid = RegInit(false.B) 148 // val prev_half_redirect = RegInit(false.B) 149 // val prev_half_fetchpc = Reg(UInt(VAddrBits.W)) 150 // val prev_half_idx = Reg(UInt(log2Up(PredictWidth).W)) 151 // val prev_half_tgt = Reg(UInt(VAddrBits.W)) 152 // val prev_half_taken = RegInit(false.B) 153 // val prev_half_instr = Reg(UInt(16.W)) 154 // when (if3_flush) { 155 // prev_half_valid := false.B 156 // prev_half_redirect := false.B 157 // }.elsewhen (if3_fire && if3_bp.saveHalfRVI) { 158 // prev_half_valid := true.B 159 // prev_half_redirect := if3_bp.redirect && bpu.io.out(1).valid 160 // prev_half_fetchpc := if3_pc 161 // val idx = Mux(if3_bp.redirect && bpu.io.out(1).valid, if3_bp.jmpIdx, PopCount(mask(if3_pc)) - 1.U) 162 // prev_half_idx := idx 163 // prev_half_tgt := if3_bp.target 164 // prev_half_taken := if3_bp.taken 165 // prev_half_instr := pd.io.out.instrs(idx)(15, 0) 166 // }.elsewhen (if3_fire) { 167 // prev_half_valid := false.B 168 // prev_half_redirect := false.B 169 // } 170 171 // when (bpu.io.out(1).valid && if3_fire) { 172 // when (prev_half_valid && prev_half_taken) { 173 // if3_redirect := true.B 174 // if1_npc := prev_half_tgt 175 // shiftPtr := true.B 176 // newPtr := if3_histPtr - 1.U 177 // hist(0) := 1.U 178 // extHist(newPtr) := 1.U 179 // }.elsewhen (if3_bp.redirect && !if3_bp.saveHalfRVI) { 180 // if3_redirect := true.B 181 // if1_npc := if3_bp.target 182 // shiftPtr := true.B 183 // newPtr := Mux(if3_bp.taken || if3_bp.hasNotTakenBrs, if3_histPtr - 1.U, if3_histPtr) 184 // hist(0) := Mux(if3_bp.taken || if3_bp.hasNotTakenBrs, if3_bp.taken.asUInt, extHist(if3_histPtr)) 185 // extHist(newPtr) := Mux(if3_bp.taken || if3_bp.hasNotTakenBrs, if3_bp.taken.asUInt, extHist(if3_histPtr)) 186 // }.elsewhen (if3_bp.saveHalfRVI) { 187 // if3_redirect := true.B 188 // if1_npc := snpc(if3_pc) 189 // shiftPtr := true.B 190 // newPtr := Mux(if3_bp.hasNotTakenBrs, if3_histPtr - 1.U, if3_histPtr) 191 // hist(0) := Mux(if3_bp.hasNotTakenBrs, 0.U, extHist(if3_histPtr)) 192 // extHist(newPtr) := Mux(if3_bp.hasNotTakenBrs, 0.U, extHist(if3_histPtr)) 193 // }.otherwise { 194 // if3_redirect := false.B 195 // } 196 // }.otherwise { 197 // if3_redirect := false.B 198 // } 199 200 201 //********************** IF4 ****************************// 202 val if4_pd = RegEnable(pd.io.out, if3_fire) 203 val if4_valid = RegInit(false.B) 204 val if4_fire = if4_valid && io.fetchPacket.ready 205 val if4_pc = RegEnable(if3_pc, if3_fire) 206 val if4_histPtr = RegEnable(if3_histPtr, if3_fire) 207 if4_ready := (if4_fire || !if4_valid || if4_flush) && GTimer() > 500.U 208 when (if4_flush) { if4_valid := false.B } 209 .elsewhen (if3_fire) { if4_valid := if3_valid } 210 .elsewhen(if4_fire) { if4_valid := false.B } 211 212 val if4_bp = Wire(new BranchPrediction) 213 if4_bp := bpu.io.out(2).bits 214 215 val if4_cfi_jal = if4_pd.instrs(if4_bp.jmpIdx) 216 val if4_cfi_jal_tgt = if4_pd.pc(if4_bp.jmpIdx) + Mux(if4_pd.pd(if4_bp.jmpIdx).isRVC, 217 SignExt(Cat(if4_cfi_jal(12), if4_cfi_jal(8), if4_cfi_jal(10, 9), if4_cfi_jal(6), if4_cfi_jal(7), if4_cfi_jal(2), if4_cfi_jal(11), if4_cfi_jal(5, 3), 0.U(1.W)), XLEN), 218 SignExt(Cat(if4_cfi_jal(31), if4_cfi_jal(19, 12), if4_cfi_jal(20), if4_cfi_jal(30, 21), 0.U(1.W)), XLEN)) 219 if4_bp.target := Mux(if4_pd.pd(if4_bp.jmpIdx).isJal && if4_bp.taken, if4_cfi_jal_tgt, bpu.io.out(2).bits.target) 220 if4_bp.redirect := bpu.io.out(2).bits.redirect || if4_pd.pd(if4_bp.jmpIdx).isJal && if4_bp.taken && if4_cfi_jal_tgt =/= bpu.io.out(2).bits.target 221 222 if4_prevHalfInstr := 0.U.asTypeOf(new PrevHalfInstr) 223 when (bpu.io.out(2).valid && if4_fire && if4_bp.saveHalfRVI) { 224 if4_prevHalfInstr.valid := true.B 225 if4_prevHalfInstr.taken := if4_bp.taken 226 if4_prevHalfInstr.fetchpc := if4_pc 227 if4_prevHalfInstr.idx := PopCount(mask(if4_pc)) - 1.U 228 if4_prevHalfInstr.pc := if4_pd.pc(if4_prevHalfInstr.idx) 229 if4_prevHalfInstr.target := if4_bp.target 230 if4_prevHalfInstr.instr := if4_pd.instrs(if4_prevHalfInstr.idx)(15, 0) 231 } 232 233 when (bpu.io.out(2).valid && if4_fire && if4_bp.redirect) { 234 if4_redirect := true.B 235 shiftPtr := true.B 236 newPtr := Mux(if4_bp.taken || if4_bp.hasNotTakenBrs, if4_histPtr - 1.U, if4_histPtr) 237 hist(0) := Mux(if4_bp.taken || if4_bp.hasNotTakenBrs, if4_bp.taken.asUInt, extHist(if4_histPtr)) 238 extHist(newPtr) := Mux(if4_bp.taken || if4_bp.hasNotTakenBrs, if4_bp.taken.asUInt, extHist(if4_histPtr)) 239 when (if4_bp.saveHalfRVI) { 240 if1_npc := snpc(if4_pc) 241 }.otherwise { 242 if1_npc := if4_bp.target 243 } 244 }.elsewhen (bpu.io.out(2).valid && if4_fire/* && !if4_bp.redirect*/) { 245 when (if4_bp.saveHalfRVI && if4_bp.taken) { 246 if4_redirect := true.B 247 if1_npc := snpc(if4_pc) 248 shiftPtr := true.B 249 newPtr := if4_histPtr - 1.U 250 hist(0) := 1.U 251 extHist(newPtr) := 1.U 252 }.otherwise { 253 if4_redirect := false.B 254 } 255 }.otherwise { 256 if4_redirect := false.B 257 } 258 259 260 261 // when (bpu.io.out(2).valid && if4_fire && if4_bp.redirect) { 262 // when (!if4_bp.saveHalfRVI) { 263 // if4_redirect := true.B 264 // // if1_npc := if4_bp.target 265 // if1_npc := Mux(if4_bp.taken, if4_bp.target, snpc(if4_pc)) 266 267 // shiftPtr := true.B 268 // newPtr := Mux(if4_bp.taken || if4_bp.hasNotTakenBrs, if4_histPtr - 1.U, if4_histPtr) 269 // hist(0) := Mux(if4_bp.taken || if4_bp.hasNotTakenBrs, if4_bp.taken.asUInt, extHist(if4_histPtr)) 270 // extHist(newPtr) := Mux(if4_bp.taken || if4_bp.hasNotTakenBrs, if4_bp.taken.asUInt, extHist(if4_histPtr)) 271 272 // }.otherwise { 273 // if4_redirect := true.B 274 // if1_npc := snpc(if4_pc) 275 276 // prev_half_valid := true.B 277 // prev_half_redirect := true.B 278 // prev_half_fetchpc := if4_pc 279 // val idx = PopCount(mask(if4_pc)) - 1.U 280 // prev_half_idx := idx 281 // prev_half_tgt := if4_bp.target 282 // prev_half_taken := if4_bp.taken 283 // prev_half_instr := if4_pd.instrs(idx)(15, 0) 284 285 // shiftPtr := true.B 286 // newPtr := Mux(if4_bp.hasNotTakenBrs, if4_histPtr - 1.U, if4_histPtr) 287 // hist(0) := Mux(if4_bp.hasNotTakenBrs, 0.U, extHist(if4_histPtr)) 288 // extHist(newPtr) := Mux(if4_bp.hasNotTakenBrs, 0.U, extHist(if4_histPtr)) 289 // } 290 // }.otherwise { 291 // if4_redirect := false.B 292 // } 293 294 when (io.outOfOrderBrInfo.valid && io.outOfOrderBrInfo.bits.isMisPred) { 295 shiftPtr := true.B 296 newPtr := io.outOfOrderBrInfo.bits.brInfo.histPtr - 1.U 297 hist(0) := io.outOfOrderBrInfo.bits.taken 298 extHist(newPtr) := io.outOfOrderBrInfo.bits.taken 299 } 300 301 when (io.redirect.valid) { 302 if1_npc := io.redirect.bits.target 303 } 304 305 io.icacheReq.valid := if1_valid && if2_ready 306 io.icacheReq.bits.addr := if1_npc 307 io.icacheResp.ready := if3_ready 308 io.icacheFlush := Cat(if3_flush, if2_flush) 309 310 val inOrderBrHist = Wire(Vec(HistoryLength, UInt(1.W))) 311 (0 until HistoryLength).foreach(i => inOrderBrHist(i) := extHist(i.U + io.inOrderBrInfo.bits.brInfo.histPtr)) 312 bpu.io.inOrderBrInfo.valid := io.inOrderBrInfo.valid 313 bpu.io.inOrderBrInfo.bits := BranchUpdateInfoWithHist(io.inOrderBrInfo.bits, inOrderBrHist.asUInt) 314 bpu.io.outOfOrderBrInfo.valid := io.outOfOrderBrInfo.valid 315 bpu.io.outOfOrderBrInfo.bits := BranchUpdateInfoWithHist(io.outOfOrderBrInfo.bits, inOrderBrHist.asUInt) // Dont care about hist 316 317 // bpu.io.flush := Cat(if4_flush, if3_flush, if2_flush) 318 bpu.io.flush := VecInit(if2_flush, if3_flush, if4_flush) 319 bpu.io.in.valid := if1_fire 320 bpu.io.in.bits.pc := if1_npc 321 bpu.io.in.bits.hist := hist.asUInt 322 bpu.io.in.bits.inMask := mask(if1_npc) 323 bpu.io.out(0).ready := if2_fire 324 bpu.io.out(1).ready := if3_fire 325 bpu.io.out(2).ready := if4_fire 326 bpu.io.predecode.valid := if4_valid 327 bpu.io.predecode.bits.mask := if4_pd.mask 328 bpu.io.predecode.bits.pd := if4_pd.pd 329 bpu.io.predecode.bits.isFetchpcEqualFirstpc := if4_pc === if4_pd.pc(0) 330 bpu.io.branchInfo.ready := if4_fire 331 332 pd.io.in := io.icacheResp.bits 333 pd.io.prev.valid := if3_hasPrevHalfInstr 334 pd.io.prev.bits := prevHalfInstr.instr 335 336 io.fetchPacket.valid := if4_valid && !io.redirect.valid 337 io.fetchPacket.bits.instrs := if4_pd.instrs 338 io.fetchPacket.bits.mask := if4_pd.mask & (Fill(PredictWidth, !if4_bp.taken) | (Fill(PredictWidth, 1.U(1.W)) >> (~if4_bp.jmpIdx))) 339 io.fetchPacket.bits.pc := if4_pd.pc 340 (0 until PredictWidth).foreach(i => io.fetchPacket.bits.pnpc(i) := if4_pd.pc(i) + Mux(if4_pd.pd(i).isRVC, 2.U, 4.U)) 341 when (if4_bp.taken) { 342 io.fetchPacket.bits.pnpc(if4_bp.jmpIdx) := if4_bp.target 343 } 344 io.fetchPacket.bits.brInfo := bpu.io.branchInfo.bits 345 (0 until PredictWidth).foreach(i => io.fetchPacket.bits.brInfo(i).histPtr := if4_histPtr) 346 io.fetchPacket.bits.pd := if4_pd.pd 347 348 // debug info 349 XSDebug(RegNext(reset.asBool) && !reset.asBool, "Reseting...\n") 350 XSDebug(io.icacheFlush(0).asBool, "Flush icache stage2...\n") 351 XSDebug(io.icacheFlush(1).asBool, "Flush icache stage3...\n") 352 XSDebug(io.redirect.valid, "Redirect from backend! isExcp=%d isMisPred=%d isReplay=%d pc=%x\n", 353 io.redirect.bits.isException, io.redirect.bits.isMisPred, io.redirect.bits.isReplay, io.redirect.bits.pc) 354 XSDebug(io.redirect.valid, p"Redirect from backend! target=${Hexadecimal(io.redirect.bits.target)} brTag=${io.redirect.bits.brTag}\n") 355 356 XSDebug("[IF1] v=%d fire=%d flush=%d pc=%x ptr=%d mask=%b\n", if1_valid, if1_fire, if1_flush, if1_npc, ptr, mask(if1_npc)) 357 XSDebug("[IF2] v=%d r=%d fire=%d redirect=%d flush=%d pc=%x ptr=%d snpc=%x\n", if2_valid, if2_ready, if2_fire, if2_redirect, if2_flush, if2_pc, if2_histPtr, if2_snpc) 358 XSDebug("[IF3] v=%d r=%d fire=%d redirect=%d flush=%d pc=%x ptr=%d\n", if3_valid, if3_ready, if3_fire, if3_redirect, if3_flush, if3_pc, if3_histPtr) 359 XSDebug("[IF4] v=%d r=%d fire=%d redirect=%d flush=%d pc=%x ptr=%d\n", if4_valid, if4_ready, if4_fire, if4_redirect, if4_flush, if4_pc, if4_histPtr) 360 361 XSDebug("[IF1][icacheReq] v=%d r=%d addr=%x\n", io.icacheReq.valid, io.icacheReq.ready, io.icacheReq.bits.addr) 362 XSDebug("[IF1][ghr] headPtr=%d shiftPtr=%d newPtr=%d ptr=%d\n", headPtr, shiftPtr, newPtr, ptr) 363 XSDebug("[IF1][ghr] hist=%b\n", hist.asUInt) 364 XSDebug("[IF1][ghr] extHist=%b\n\n", extHist.asUInt) 365 366 XSDebug("[IF2][bp] redirect=%d taken=%d jmpIdx=%d hasNTBrs=%d target=%x saveHalfRVI=%d\n\n", if2_bp.redirect, if2_bp.taken, if2_bp.jmpIdx, if2_bp.hasNotTakenBrs, if2_bp.target, if2_bp.saveHalfRVI) 367 368 XSDebug("[IF3][icacheResp] v=%d r=%d pc=%x mask=%b\n", io.icacheResp.valid, io.icacheResp.ready, io.icacheResp.bits.pc, io.icacheResp.bits.mask) 369 XSDebug("[IF3][bp] redirect=%d taken=%d jmpIdx=%d hasNTBrs=%d target=%x saveHalfRVI=%d\n", if3_bp.redirect, if3_bp.taken, if3_bp.jmpIdx, if3_bp.hasNotTakenBrs, if3_bp.target, if3_bp.saveHalfRVI) 370 // XSDebug("[IF3][prevHalfInstr] v=%d redirect=%d fetchpc=%x idx=%d tgt=%x taken=%d instr=%x\n\n", 371 // prev_half_valid, prev_half_redirect, prev_half_fetchpc, prev_half_idx, prev_half_tgt, prev_half_taken, prev_half_instr) 372 XSDebug("[IF3][ prevHalfInstr] v=%d taken=%d fetchpc=%x idx=%d pc=%x tgt=%x instr=%x\n", 373 prevHalfInstr.valid, prevHalfInstr.taken, prevHalfInstr.fetchpc, prevHalfInstr.idx, prevHalfInstr.pc, prevHalfInstr.target, prevHalfInstr.instr) 374 XSDebug("[IF3][if3_prevHalfInstr] v=%d taken=%d fetchpc=%x idx=%d pc=%x tgt=%x instr=%x\n\n", 375 if3_prevHalfInstr.valid, if3_prevHalfInstr.taken, if3_prevHalfInstr.fetchpc, if3_prevHalfInstr.idx, if3_prevHalfInstr.pc, if3_prevHalfInstr.target, if3_prevHalfInstr.instr) 376 377 378 XSDebug("[IF4][predecode] mask=%b\n", if4_pd.mask) 379 XSDebug("[IF4][bp] redirect=%d taken=%d jmpIdx=%d hasNTBrs=%d target=%x saveHalfRVI=%d\n", if4_bp.redirect, if4_bp.taken, if4_bp.jmpIdx, if4_bp.hasNotTakenBrs, if4_bp.target, if4_bp.saveHalfRVI) 380 XSDebug(if4_pd.pd(if4_bp.jmpIdx).isJal && if4_bp.taken, "[IF4] cfi is jal! instr=%x target=%x\n", if4_cfi_jal, if4_cfi_jal_tgt) 381 XSDebug("[IF4][if4_prevHalfInstr] v=%d taken=%d fetchpc=%x idx=%d pc=%x tgt=%x instr=%x\n", 382 if4_prevHalfInstr.valid, if4_prevHalfInstr.taken, if4_prevHalfInstr.fetchpc, if4_prevHalfInstr.idx, if4_prevHalfInstr.pc, if4_prevHalfInstr.target, if4_prevHalfInstr.instr) 383 XSDebug(io.fetchPacket.fire(), "[IF4][fetchPacket] v=%d r=%d mask=%b\n", io.fetchPacket.valid, io.fetchPacket.ready, io.fetchPacket.bits.mask) 384 for (i <- 0 until PredictWidth) { 385 XSDebug(io.fetchPacket.fire(), "[IF4][fetchPacket] %b %x pc=%x pnpc=%x pd: rvc=%d brType=%b call=%d ret=%d\n", 386 io.fetchPacket.bits.mask(i), 387 io.fetchPacket.bits.instrs(i), 388 io.fetchPacket.bits.pc(i), 389 io.fetchPacket.bits.pnpc(i), 390 io.fetchPacket.bits.pd(i).isRVC, 391 io.fetchPacket.bits.pd(i).brType, 392 io.fetchPacket.bits.pd(i).isCall, 393 io.fetchPacket.bits.pd(i).isRet 394 ) 395 } 396}