LSU & EXU added
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quasar_wrapper.fir
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quasar_wrapper.fir
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Load Diff
3386
quasar_wrapper.v
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quasar_wrapper.v
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@ -231,4 +231,8 @@ class exu extends Module with lib with RequireAsyncReset{
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io.exu_bp.exu_mp_eghr := final_predpipe_mp(PREDPIPESIZE-1,BTB_ADDR_HI-BTB_ADDR_LO+BTB_BTAG_SIZE+1) // mp ghr for bht write
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io.exu_flush_path_final := Mux(io.dec_exu.tlu_exu.dec_tlu_flush_lower_r.asBool, io.dec_exu.tlu_exu.dec_tlu_flush_path_r, i0_flush_path_d)
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io.dec_exu.tlu_exu.exu_npc_r := Mux(i0_pred_correct_upper_r===1.U, pred_correct_npc_r, i0_flush_path_upper_r)
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}
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}
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object exu_main extends App {
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println((new chisel3.stage.ChiselStage).emitVerilog(new exu()))
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}
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@ -109,7 +109,6 @@ class exu_alu_ctl extends Module with lib with RequireAsyncReset{
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val target_mispredict = io.pp_in.bits.pret & (io.pp_in.bits.prett =/= aout(31,1)) //predicted return target != aout
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io.flush_upper_out := (io.i0_ap.jal | cond_mispredict | target_mispredict) & io.dec_alu.dec_i0_alu_decode_d & !io.flush_upper_x & !io.dec_tlu_flush_lower_r
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//there was no entire pipe flush (& previous cycle flush ofc(why check?)) therfore signAL 1 to flush instruction before X stage
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io.flush_final_out := ( (io.i0_ap.jal | cond_mispredict | target_mispredict) & io.dec_alu.dec_i0_alu_decode_d & !io.flush_upper_x ) | io.dec_tlu_flush_lower_r
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//there was entire pipe flush or (there is mispred or a jal) therfore signAL 1 to flush entire pipe
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@ -183,6 +183,7 @@ class lsu_bus_buffer extends Module with RequireAsyncReset with lib {
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(io.lsu_addr_r(1,0)===1.U)->Cat(0.U(3.W), ldst_byteen_r(3)),
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(io.lsu_addr_r(1,0)===2.U)->Cat(0.U(2.W), ldst_byteen_r(3,2)),
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(io.lsu_addr_r(1,0)===3.U)->Cat(0.U(1.W), ldst_byteen_r(3,1))))
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val ldst_byteen_lo_r = Mux1H(Seq((io.lsu_addr_r(1,0)===0.U)->ldst_byteen_r,
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(io.lsu_addr_r(1,0)===1.U)->Cat(ldst_byteen_r(2,0), 0.U),
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(io.lsu_addr_r(1,0)===2.U)->Cat(ldst_byteen_r(1,0), 0.U(2.W)),
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@ -3,8 +3,6 @@ import chisel3._
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import chisel3.util._
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import lib._
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import include._
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import snapshot._
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import ifu._
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class lsu_bus_intf extends Module with RequireAsyncReset with lib {
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val io = IO (new Bundle {
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@ -4,7 +4,6 @@ import chisel3.experimental.chiselName
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import chisel3.util._
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import lib._
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import include._
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import snapshot._
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@chiselName
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class lsu_clkdomain extends Module with RequireAsyncReset with lib{
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