riscv/rocket-chip
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fix vector length calc bug, thanks chris and andrew

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This commit is contained in:
Yunsup Lee 2012-03-27 12:04:07 -07:00
parent 6bda8674bd
commit bb704dc0c9
1 changed files with 4 additions and 2 deletions
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6
rocket/src/main/scala/dpath_vec.scala
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@ -40,8 +40,10 @@ class rocketDpathVec extends Component
{
val io = new ioDpathVec()
val nxregs = Mux(io.ctrl.fn === VEC_CFG, io.wdata(5,0), io.inst(15,10)).toUFix + UFix(0,7)
val nfregs = Mux(io.ctrl.fn === VEC_CFG, io.rs2(5,0), io.inst(21,16)).toUFix + UFix(0,7)
val nxregs_stage = Mux(io.ctrl.fn === VEC_CFG, io.wdata(5,0), io.inst(15,10))
val nfregs_stage = Mux(io.ctrl.fn === VEC_CFG, io.rs2(5,0), io.inst(21,16))
val nxregs = Mux(nxregs_stage(5), Bits(32), Mux(nxregs_stage === Bits(0), Bits(1), nxregs_stage)) + UFix(0,7)
val nfregs = Mux(nfregs_stage(5), Bits(32), nfregs_stage) + UFix(0,7)
val nregs = nxregs + nfregs
val uts_per_bank = MuxLookup(