Merge remote-tracking branch 'origin/master' into rocc-fpu-port
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commit
df5daaa72e
@ -325,7 +325,7 @@ class FPUFMAPipe(val latency: Int, sigWidth: Int, expWidth: Int) extends Module
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val in = Valid(new FPInput).flip
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val out = Valid(new FPResult)
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}
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val width = sigWidth + expWidth
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val one = UInt(1) << (width-1)
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val zero = (io.in.bits.in1(width) ^ io.in.bits.in2(width)) << width
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@ -392,8 +392,8 @@ class FPU(implicit p: Parameters) extends CoreModule()(p) {
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// regfile
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val regfile = Mem(32, Bits(width = 65))
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when (load_wb) {
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regfile(load_wb_tag) := load_wb_data_recoded
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when (load_wb) {
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regfile(load_wb_tag) := load_wb_data_recoded
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if (enableCommitLog) {
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printf ("f%d p%d 0x%x\n", load_wb_tag, load_wb_tag + UInt(32),
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Mux(load_wb_single, load_wb_data(31,0), load_wb_data))
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@ -462,7 +462,7 @@ class FPU(implicit p: Parameters) extends CoreModule()(p) {
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val divSqrt_wdata = Wire(Bits())
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val divSqrt_flags = Wire(Bits())
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val divSqrt_in_flight = Reg(init=Bool(false))
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val divSqrt_cp = Reg(init=Bool(false))
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val divSqrt_killed = Reg(Bool())
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// writeback arbitration
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case class Pipe(p: Module, lat: Int, cond: (FPUCtrlSigs) => Bool, res: FPResult)
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@ -505,7 +505,7 @@ class FPU(implicit p: Parameters) extends CoreModule()(p) {
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val wcp = winfo(0)(6+log2Up(pipes.size))
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val wdata = Mux(divSqrt_wen, divSqrt_wdata, Vec(pipes.map(_.res.data))(wsrc))
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val wexc = Vec(pipes.map(_.res.exc))(wsrc)
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when ((!wcp && wen(0)) || (!divSqrt_cp && divSqrt_wen)) {
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when ((!wcp && wen(0)) || divSqrt_wen) {
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regfile(waddr) := wdata
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if (enableCommitLog) {
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val wdata_unrec_s = hardfloat.recodedFloatNToFloatN(wdata(64,0), 23, 9)
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@ -515,9 +515,9 @@ class FPU(implicit p: Parameters) extends CoreModule()(p) {
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Mux(wb_single, Cat(UInt(0,32), wdata_unrec_s), wdata_unrec_d))
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}
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}
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when ((wcp && wen(0)) || (divSqrt_cp && divSqrt_wen)) {
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when (wcp && wen(0)) {
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io.cp_resp.bits.data := wdata
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io.cp_resp.valid := Bool(true)
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io.cp_resp.valid := Bool(true)
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}
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io.cp_req.ready := !ex_reg_valid
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@ -551,8 +551,7 @@ class FPU(implicit p: Parameters) extends CoreModule()(p) {
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val divSqrt = Module(new hardfloat.divSqrtRecodedFloat64)
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divSqrt_inReady := Mux(divSqrt.io.sqrtOp, divSqrt.io.inReady_sqrt, divSqrt.io.inReady_div)
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val divSqrt_outValid = divSqrt.io.outValid_div || divSqrt.io.outValid_sqrt
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val divSqrt_wb_hazard = wen.orR
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divSqrt.io.inValid := mem_reg_valid && !divSqrt_wb_hazard && !divSqrt_in_flight && (!io.killm || mem_cp_valid) && (mem_ctrl.div || mem_ctrl.sqrt)
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divSqrt.io.inValid := mem_reg_valid && (mem_ctrl.div || mem_ctrl.sqrt)
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divSqrt.io.sqrtOp := mem_ctrl.sqrt
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divSqrt.io.a := fpiu.io.as_double.in1
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divSqrt.io.b := fpiu.io.as_double.in2
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@ -560,14 +559,14 @@ class FPU(implicit p: Parameters) extends CoreModule()(p) {
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when (divSqrt.io.inValid && divSqrt_inReady) {
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divSqrt_in_flight := true
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divSqrt_killed := killm
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divSqrt_single := mem_ctrl.single
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divSqrt_waddr := mem_reg_inst(11,7)
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divSqrt_rm := divSqrt.io.roundingMode
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divSqrt_cp := mem_cp_valid
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}
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when (divSqrt_outValid) {
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divSqrt_wen := true
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divSqrt_wen := !divSqrt_killed
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divSqrt_wdata_double := divSqrt.io.out
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divSqrt_in_flight := false
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divSqrt_flags_double := divSqrt.io.exceptionFlags
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