mirror of
				https://github.com/openhwgroup/cvw
				synced 2025-02-11 06:05:49 +00:00 
			
		
		
		
	Renamed branch predictors and consolidated global and gshare predictors.
This commit is contained in:
		
							parent
							
								
									6eefa5b1e3
								
							
						
					
					
						commit
						7df3a84060
					
				@ -130,7 +130,7 @@
 | 
			
		||||
`define PLIC_GPIO_ID 3
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 1
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -139,8 +139,8 @@
 | 
			
		||||
`define PLIC_GPIO_ID 3
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 1
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE or BPSPECULATIVEGLOBAL or BPSPECULATIVEGSHARE or BPOLDGSHARE or BPOLDGSHARE2
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 12
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -134,7 +134,7 @@
 | 
			
		||||
`define PLIC_UART_ID 10
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 0
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -133,7 +133,7 @@
 | 
			
		||||
`define PLIC_UART_ID 10
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 1
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -134,7 +134,7 @@
 | 
			
		||||
`define PLIC_UART_ID 10
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 0
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -133,7 +133,7 @@
 | 
			
		||||
`define PLIC_UART_ID 10
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 0
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -136,7 +136,7 @@
 | 
			
		||||
`define PLIC_UART_ID 10
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 1
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -136,7 +136,7 @@
 | 
			
		||||
`define PLIC_UART_ID 10
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 1
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE_FORWARD" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE or BPSPECULATIVEGLOBAL or BPSPECULATIVEGSHARE or BPOLDGSHARE or BPOLDGSHARE2
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
@ -136,7 +136,7 @@
 | 
			
		||||
`define PLIC_UART_ID 10
 | 
			
		||||
 | 
			
		||||
`define BPRED_SUPPORTED 0
 | 
			
		||||
`define BPRED_TYPE "BPGSHARE" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE
 | 
			
		||||
`define BPRED_TYPE "BP_GSHARE" // BP_GSHARE_BASIC, BP_GLOBAL, BP_GLOBAL_BASIC, BP_TWOBIT
 | 
			
		||||
`define BPRED_SIZE 10
 | 
			
		||||
`define BTB_SIZE 10
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
							
								
								
									
										117
									
								
								sim/wave.do
									
									
									
									
									
								
							
							
						
						
									
										117
									
								
								sim/wave.do
									
									
									
									
									
								
							@ -37,17 +37,17 @@ add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/
 | 
			
		||||
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/core/StallE
 | 
			
		||||
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/core/StallM
 | 
			
		||||
add wave -noupdate -group HDU -expand -group Stall -color Orange /testbench/dut/core/StallW
 | 
			
		||||
add wave -noupdate -expand -group {instruction pipeline} /testbench/InstrFName
 | 
			
		||||
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/core/ifu/PostSpillInstrRawF
 | 
			
		||||
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/core/ifu/InstrD
 | 
			
		||||
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/core/ifu/InstrE
 | 
			
		||||
add wave -noupdate -expand -group {instruction pipeline} /testbench/dut/core/ifu/InstrM
 | 
			
		||||
add wave -noupdate -expand -group PCS /testbench/dut/core/ifu/PCNextF
 | 
			
		||||
add wave -noupdate -expand -group PCS /testbench/dut/core/ifu/PCF
 | 
			
		||||
add wave -noupdate -expand -group PCS /testbench/dut/core/ifu/PCD
 | 
			
		||||
add wave -noupdate -expand -group PCS /testbench/dut/core/PCE
 | 
			
		||||
add wave -noupdate -expand -group PCS /testbench/dut/core/PCM
 | 
			
		||||
add wave -noupdate -expand -group PCS /testbench/PCW
 | 
			
		||||
add wave -noupdate -group {instruction pipeline} /testbench/InstrFName
 | 
			
		||||
add wave -noupdate -group {instruction pipeline} /testbench/dut/core/ifu/PostSpillInstrRawF
 | 
			
		||||
add wave -noupdate -group {instruction pipeline} /testbench/dut/core/ifu/InstrD
 | 
			
		||||
add wave -noupdate -group {instruction pipeline} /testbench/dut/core/ifu/InstrE
 | 
			
		||||
add wave -noupdate -group {instruction pipeline} /testbench/dut/core/ifu/InstrM
 | 
			
		||||
add wave -noupdate -group PCS /testbench/dut/core/ifu/PCNextF
 | 
			
		||||
add wave -noupdate -group PCS /testbench/dut/core/ifu/PCF
 | 
			
		||||
add wave -noupdate -group PCS /testbench/dut/core/ifu/PCD
 | 
			
		||||
add wave -noupdate -group PCS /testbench/dut/core/PCE
 | 
			
		||||
add wave -noupdate -group PCS /testbench/dut/core/PCM
 | 
			
		||||
add wave -noupdate -group PCS /testbench/PCW
 | 
			
		||||
add wave -noupdate -group {Decode Stage} /testbench/dut/core/ifu/PCD
 | 
			
		||||
add wave -noupdate -group {Decode Stage} /testbench/dut/core/ifu/InstrD
 | 
			
		||||
add wave -noupdate -group {Decode Stage} /testbench/InstrDName
 | 
			
		||||
@ -95,15 +95,15 @@ add wave -noupdate -group Bpred -group {bp wrong} /testbench/dut/core/ifu/bpred/
 | 
			
		||||
add wave -noupdate -group Bpred -group {bp wrong} /testbench/dut/core/ifu/bpred/bpred/InstrClassE
 | 
			
		||||
add wave -noupdate -group Bpred -group {bp wrong} /testbench/dut/core/ifu/bpred/bpred/BPPredWrongE
 | 
			
		||||
add wave -noupdate -group Bpred /testbench/dut/core/ifu/bpred/bpred/BPPredWrongE
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/PCNextF
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/NextValidPCE
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/PCF
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/PCPlus2or4F
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/BPPredPCF
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/SelBPPredF
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/PCNext0F
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/PCNext1F
 | 
			
		||||
add wave -noupdate -expand -group {PCNext Generation} /testbench/dut/core/ifu/BPPredWrongE
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/PCNextF
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/NextValidPCE
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/PCF
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/PCPlus2or4F
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/BPPredPCF
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/SelBPPredF
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/bpred/bpred/PCNext0F
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/PCNext1F
 | 
			
		||||
add wave -noupdate -group {PCNext Generation} /testbench/dut/core/ifu/BPPredWrongE
 | 
			
		||||
add wave -noupdate -group RegFile -expand /testbench/dut/core/ieu/dp/regf/rf
 | 
			
		||||
add wave -noupdate -group RegFile /testbench/dut/core/ieu/dp/regf/a1
 | 
			
		||||
add wave -noupdate -group RegFile /testbench/dut/core/ieu/dp/regf/a2
 | 
			
		||||
@ -556,21 +556,21 @@ add wave -noupdate -group ifu -group itlb -expand -group key19 {/testbench/dut/c
 | 
			
		||||
add wave -noupdate -group ifu -group itlb -expand -group key19 {/testbench/dut/core/ifu/immu/immu/tlb/tlb/tlbcam/camlines[19]/Key1}
 | 
			
		||||
add wave -noupdate -group ifu -group itlb -expand -group key19 {/testbench/dut/core/ifu/immu/immu/tlb/tlb/tlbcam/camlines[19]/Query0}
 | 
			
		||||
add wave -noupdate -group ifu -group itlb -expand -group key19 {/testbench/dut/core/ifu/immu/immu/tlb/tlb/tlbcam/camlines[19]/Query1}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -label MCYCLE -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[0]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -label MINSTRET -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[2]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -label {LOAD STORE HAZARD} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[3]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {BP DIRECTION WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[4]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {BP INSTRUCTION} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[5]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {BTA/JTA WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[6]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {JAL(R) INSTRUCTION} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[7]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {RAS WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[8]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {RETURN INSTRUCTION} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[9]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {BP CLASS WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[10]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group BRP -label {Branch Predictor Wrong} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[15]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group ICACHE -label {ICACHE ACCESS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[13]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group ICACHE -label {ICACHE MISS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[14]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group DCACHE -label {DCACHE ACCESS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[11]}
 | 
			
		||||
add wave -noupdate -group {Performance Counters} -expand -group DCACHE -label {DCACHE MISS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[12]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -label MCYCLE -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[0]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -label MINSTRET -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[2]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -label {LOAD STORE HAZARD} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[3]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {BP DIRECTION WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[4]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {BP INSTRUCTION} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[5]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {BTA/JTA WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[6]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {JAL(R) INSTRUCTION} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[7]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {RAS WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[8]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {RETURN INSTRUCTION} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[9]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {BP CLASS WRONG} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[10]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group BRP -label {Branch Predictor Wrong} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[15]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group ICACHE -label {ICACHE ACCESS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[13]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group ICACHE -label {ICACHE MISS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[14]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group DCACHE -label {DCACHE ACCESS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[11]}
 | 
			
		||||
add wave -noupdate -expand -group {Performance Counters} -expand -group DCACHE -label {DCACHE MISS} -radix unsigned {/testbench/dut/core/priv/priv/csr/counters/counters/HPMCOUNTER_REGW[12]}
 | 
			
		||||
add wave -noupdate -group {ifu } -color Gold /testbench/dut/core/ifu/bus/icache/ahbcacheinterface/AHBBuscachefsm/CurrState
 | 
			
		||||
add wave -noupdate -group {ifu } /testbench/dut/core/ifu/bus/icache/ahbcacheinterface/AHBBuscachefsm/HREADY
 | 
			
		||||
add wave -noupdate -group {ifu } /testbench/dut/core/ifu/bus/icache/ahbcacheinterface/FetchBuffer
 | 
			
		||||
@ -602,23 +602,23 @@ add wave -noupdate -group uncore /testbench/dut/uncore/uncore/HSELNoneD
 | 
			
		||||
add wave -noupdate -group uncore /testbench/dut/uncore/uncore/HSELPLICD
 | 
			
		||||
add wave -noupdate -group uncore /testbench/dut/uncore/uncore/HRDATA
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/rd
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/IndexNextF
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group {branch outcome} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/PCSrcE
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group {branch outcome} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/DirPredictionE
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/TableDirPredictionF
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/MatchXF
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group conditions /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/DirPredictionWrongE
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group conditions /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushM
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group conditions /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushE
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group ghr /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRF
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group ghr /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRD
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group ghr /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRE
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushD
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} -expand -group nextghr2 /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRNextF
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/NewDirPredictionE
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/IndexE
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/StallM
 | 
			
		||||
add wave -noupdate -expand -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushM
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/IndexNextF
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group {branch outcome} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/PCSrcE
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group {branch outcome} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/DirPredictionE
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/TableDirPredictionF
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/MatchXF
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group conditions /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/DirPredictionWrongE
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group conditions /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushM
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group conditions /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushE
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group ghr /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRF
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group ghr /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRD
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group ghr /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRE
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushD
 | 
			
		||||
add wave -noupdate -group {branch direction} -expand -group nextghr2 /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRNextF
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/NewDirPredictionE
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/IndexE
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/StallM
 | 
			
		||||
add wave -noupdate -group {branch direction} /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/FlushM
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHR
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/GHRF
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/PCNextF
 | 
			
		||||
@ -627,9 +627,16 @@ add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/In
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/DirPredictionF
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/BranchInstrF
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/Predictor/DirPredictor/MatchNextX
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/PredInstrClassF
 | 
			
		||||
add wave -noupdate /testbench/dut/core/ifu/bpred/bpred/PredValidF
 | 
			
		||||
add wave -noupdate /testbench/dut/core/priv/priv/csr/counters/counters/DCacheAccess
 | 
			
		||||
add wave -noupdate /testbench/dut/core/priv/priv/csr/counters/counters/ICacheMiss
 | 
			
		||||
add wave -noupdate /testbench/dut/core/priv/priv/csr/counters/counters/ICacheAccess
 | 
			
		||||
add wave -noupdate /testbench/dut/core/priv/priv/csr/counters/counters/DCacheMiss
 | 
			
		||||
add wave -noupdate /testbench/dut/core/priv/priv/csr/counters/counters/InstrValidNotFlushedM
 | 
			
		||||
TreeUpdate [SetDefaultTree]
 | 
			
		||||
WaveRestoreCursors {{Cursor 2} {314596 ns} 1} {{Cursor 3} {314460 ns} 1} {{Cursor 4} {391801 ns} 1} {{Cursor 4} {1156601 ns} 1} {{Cursor 5} {394986 ns} 0}
 | 
			
		||||
quietly wave cursor active 5
 | 
			
		||||
WaveRestoreCursors {{Cursor 2} {314596 ns} 1} {{Cursor 3} {314460 ns} 1} {{Cursor 4} {391801 ns} 1} {{Cursor 4} {368581 ns} 0} {{Cursor 5} {394987 ns} 1}
 | 
			
		||||
quietly wave cursor active 4
 | 
			
		||||
configure wave -namecolwidth 250
 | 
			
		||||
configure wave -valuecolwidth 194
 | 
			
		||||
configure wave -justifyvalue left
 | 
			
		||||
@ -644,4 +651,4 @@ configure wave -griddelta 40
 | 
			
		||||
configure wave -timeline 0
 | 
			
		||||
configure wave -timelineunits ns
 | 
			
		||||
update
 | 
			
		||||
WaveRestoreZoom {394883 ns} {395051 ns}
 | 
			
		||||
WaveRestoreZoom {368125 ns} {368797 ns}
 | 
			
		||||
 | 
			
		||||
@ -94,36 +94,32 @@ module bpred (
 | 
			
		||||
 | 
			
		||||
  // Part 1 branch direction prediction
 | 
			
		||||
  // look into the 2 port Sram model. something is wrong. 
 | 
			
		||||
  if (`BPRED_TYPE == "BPTWOBIT") begin:Predictor
 | 
			
		||||
  if (`BPRED_TYPE == "BP_TWOBIT") begin:Predictor
 | 
			
		||||
    twoBitPredictor #(`BPRED_SIZE) DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .FlushD, .FlushE, .FlushM,
 | 
			
		||||
      .PCNextF, .PCM, .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]), .PCSrcE);
 | 
			
		||||
 | 
			
		||||
  end else if (`BPRED_TYPE == "BPGLOBAL") begin:Predictor
 | 
			
		||||
    globalhistory #(`BPRED_SIZE) DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]), .PCSrcE);
 | 
			
		||||
 | 
			
		||||
  end else if (`BPRED_TYPE == "BPSPECULATIVEGLOBAL") begin:Predictor
 | 
			
		||||
    speculativeglobalhistory #(`BPRED_SIZE) DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .PredInstrClassF, .InstrClassD, .InstrClassE, .InstrClassM, .WrongPredInstrClassD, .PCSrcE);
 | 
			
		||||
	    
 | 
			
		||||
  end else if (`BPRED_TYPE == "BPGSHARE") begin:Predictor
 | 
			
		||||
  end else if (`BPRED_TYPE == "BP_GSHARE") begin:Predictor
 | 
			
		||||
    gshare #(`BPRED_SIZE) DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .PCNextF, .PCM, .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]), .PCSrcE);
 | 
			
		||||
 | 
			
		||||
  end else if (`BPRED_TYPE == "BPSPECULATIVEGSHARE") begin:Predictor
 | 
			
		||||
    speculativegshare #(`BPRED_SIZE) DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .PCNextF, .PCF, .PCD, .PCE, .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .PredInstrClassF, .InstrClassD, .InstrClassE, .InstrClassM, .WrongPredInstrClassD, .PCSrcE);
 | 
			
		||||
 | 
			
		||||
  end else if (`BPRED_TYPE == "BP_GSHARE_FORWARD") begin:Predictor
 | 
			
		||||
    gshareForward #(`BPRED_SIZE) DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .PCNextF, .PCF, .PCD, .PCE, .PCM, .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .BranchInstrF(PredInstrClassF[0]), .BranchInstrD(InstrClassD[0]), .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]),
 | 
			
		||||
      .PCSrcE);
 | 
			
		||||
 | 
			
		||||
  end else if (`BPRED_TYPE == "BP_GLOBAL") begin:Predictor
 | 
			
		||||
    gshare #(`BPRED_SIZE, "global") DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .PCNextF, .PCF, .PCD, .PCE, .PCM, .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .BranchInstrF(PredInstrClassF[0]), .BranchInstrD(InstrClassD[0]), .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]),
 | 
			
		||||
      .PCSrcE);
 | 
			
		||||
 | 
			
		||||
  end else if (`BPRED_TYPE == "BP_GSHARE_BASIC") begin:Predictor
 | 
			
		||||
    gsharebasic #(`BPRED_SIZE) DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .PCNextF, .PCM, .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]), .PCSrcE);
 | 
			
		||||
 | 
			
		||||
  end else if (`BPRED_TYPE == "BP_GLOBAL_BASIC") begin:Predictor
 | 
			
		||||
    gsharebasic #(`BPRED_SIZE, "global") DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
 | 
			
		||||
      .PCNextF, .PCM, .DirPredictionF, .DirPredictionWrongE,
 | 
			
		||||
      .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]), .PCSrcE);
 | 
			
		||||
	
 | 
			
		||||
  end else if (`BPRED_TYPE == "BPLOCALPAg") begin:Predictor
 | 
			
		||||
    // *** Fix me
 | 
			
		||||
 | 
			
		||||
@ -28,7 +28,8 @@
 | 
			
		||||
 | 
			
		||||
`include "wally-config.vh"
 | 
			
		||||
 | 
			
		||||
module gshare #(parameter k = 10) (
 | 
			
		||||
module gshare #(parameter k = 10,
 | 
			
		||||
                parameter string TYPE = "gshare") (
 | 
			
		||||
  input logic             clk,
 | 
			
		||||
  input logic             reset,
 | 
			
		||||
  input logic             StallF, StallD, StallE, StallM, StallW,
 | 
			
		||||
@ -36,28 +37,60 @@ module gshare #(parameter k = 10) (
 | 
			
		||||
  output logic [1:0]      DirPredictionF, 
 | 
			
		||||
  output logic            DirPredictionWrongE,
 | 
			
		||||
  // update
 | 
			
		||||
  input logic [`XLEN-1:0] PCNextF, PCM,
 | 
			
		||||
  input logic             BranchInstrE, BranchInstrM, PCSrcE
 | 
			
		||||
  input logic [`XLEN-1:0] PCNextF, PCF, PCD, PCE, PCM,
 | 
			
		||||
  input logic             BranchInstrF, BranchInstrD, BranchInstrE, BranchInstrM, PCSrcE
 | 
			
		||||
);
 | 
			
		||||
 | 
			
		||||
  logic [k-1:0]            IndexNextF, IndexE;
 | 
			
		||||
  logic [1:0]              DirPredictionD, DirPredictionE;
 | 
			
		||||
  logic                    MatchF, MatchD, MatchE, MatchM;
 | 
			
		||||
  logic                    MatchNextX, MatchXF;
 | 
			
		||||
 | 
			
		||||
  logic [1:0]              TableDirPredictionF, DirPredictionD, DirPredictionE, ForwardNewDirPrediction, ForwardDirPredictionF;
 | 
			
		||||
  logic [1:0]              NewDirPredictionE, NewDirPredictionM;
 | 
			
		||||
 | 
			
		||||
  logic [k-1:0]            GHRF, GHRD, GHRE, GHRM, GHR;
 | 
			
		||||
  logic [k-1:0]            GHRNext;
 | 
			
		||||
  logic [k-1:0]            IndexNextF, IndexF, IndexD, IndexE, IndexM;
 | 
			
		||||
 | 
			
		||||
  logic [k-1:0]            GHRF, GHRD, GHRE, GHRM;
 | 
			
		||||
  logic [k-1:0]            GHRNextM, GHRNextF;
 | 
			
		||||
  logic                    PCSrcM;
 | 
			
		||||
 | 
			
		||||
  assign IndexNextF = GHR ^ {PCNextF[k+1] ^ PCNextF[1], PCNextF[k:2]};
 | 
			
		||||
  assign IndexE = GHRM ^ {PCM[k+1] ^ PCM[1], PCM[k:2]};
 | 
			
		||||
  if(TYPE == "gshare") begin
 | 
			
		||||
	assign IndexNextF = GHRNextF ^ {PCNextF[k+1] ^ PCNextF[1], PCNextF[k:2]};
 | 
			
		||||
	assign IndexF = GHRF ^ {PCF[k+1] ^ PCF[1], PCF[k:2]};
 | 
			
		||||
	assign IndexD = GHRD ^ {PCD[k+1] ^ PCD[1], PCD[k:2]};
 | 
			
		||||
	assign IndexE = GHRE ^ {PCE[k+1] ^ PCE[1], PCE[k:2]};
 | 
			
		||||
	assign IndexM = GHRM ^ {PCM[k+1] ^ PCM[1], PCM[k:2]};
 | 
			
		||||
  end else if(TYPE == "global") begin
 | 
			
		||||
	assign IndexNextF = {PCNextF[k+1] ^ PCNextF[1], PCNextF[k:2]};
 | 
			
		||||
	assign IndexF = {PCF[k+1] ^ PCF[1], PCF[k:2]};
 | 
			
		||||
	assign IndexD = {PCD[k+1] ^ PCD[1], PCD[k:2]};
 | 
			
		||||
	assign IndexE = {PCE[k+1] ^ PCE[1], PCE[k:2]};
 | 
			
		||||
	assign IndexM = {PCM[k+1] ^ PCM[1], PCM[k:2]};
 | 
			
		||||
  end
 | 
			
		||||
 | 
			
		||||
  assign MatchF = BranchInstrF & ~FlushD & (IndexNextF == IndexF);
 | 
			
		||||
  assign MatchD = BranchInstrD & ~FlushE & (IndexNextF == IndexD);
 | 
			
		||||
  assign MatchE = BranchInstrE & ~FlushM & (IndexNextF == IndexE);
 | 
			
		||||
  assign MatchM = BranchInstrM & ~FlushW & (IndexNextF == IndexM);
 | 
			
		||||
  assign MatchNextX = MatchF | MatchD | MatchE | MatchM;
 | 
			
		||||
 | 
			
		||||
  flopenr #(1) MatchReg(clk, reset, ~StallF, MatchNextX, MatchXF);
 | 
			
		||||
 | 
			
		||||
  assign ForwardNewDirPrediction = MatchF ? {2{DirPredictionF[1]}} :
 | 
			
		||||
                                   MatchD ? {2{DirPredictionD[1]}} :
 | 
			
		||||
                                   MatchE ? {NewDirPredictionE} :
 | 
			
		||||
                                   NewDirPredictionM ;
 | 
			
		||||
  
 | 
			
		||||
  flopenr #(2) ForwardDirPredicitonReg(clk, reset, ~StallF, ForwardNewDirPrediction, ForwardDirPredictionF);
 | 
			
		||||
 | 
			
		||||
  assign DirPredictionF = MatchXF ? ForwardDirPredictionF : TableDirPredictionF;
 | 
			
		||||
 | 
			
		||||
  ram2p1r1wbe #(2**k, 2) PHT(.clk(clk),
 | 
			
		||||
    .ce1(~StallF), .ce2(~StallM & ~FlushM),
 | 
			
		||||
    .ra1(IndexNextF),
 | 
			
		||||
    .rd1(DirPredictionF),
 | 
			
		||||
    .wa2(IndexE),
 | 
			
		||||
    .rd1(TableDirPredictionF),
 | 
			
		||||
    .wa2(IndexM),
 | 
			
		||||
    .wd2(NewDirPredictionM),
 | 
			
		||||
    .we2(BranchInstrM & ~StallW & ~FlushW),
 | 
			
		||||
    .we2(BranchInstrM),
 | 
			
		||||
    .bwe2(1'b1));
 | 
			
		||||
 | 
			
		||||
  flopenrc #(2) PredictionRegD(clk, reset,  FlushD, ~StallD, DirPredictionF, DirPredictionD);
 | 
			
		||||
@ -68,14 +101,14 @@ module gshare #(parameter k = 10) (
 | 
			
		||||
 | 
			
		||||
  assign DirPredictionWrongE = PCSrcE != DirPredictionE[1] & BranchInstrE;
 | 
			
		||||
 | 
			
		||||
  assign GHRNext = BranchInstrM ? {PCSrcM, GHR[k-1:1]} : GHR;
 | 
			
		||||
  flopenr #(k) GHRReg(clk, reset, ~StallM & ~FlushM & BranchInstrM, GHRNext, GHR);
 | 
			
		||||
  assign GHRNextF = BranchInstrF ? {DirPredictionF[1], GHRF[k-1:1]} : GHRF;
 | 
			
		||||
  assign GHRF = BranchInstrD  ? {DirPredictionD[1], GHRD[k-1:1]} : GHRD;
 | 
			
		||||
  assign GHRD = BranchInstrE ? {PCSrcE, GHRE[k-1:1]} : GHRE;
 | 
			
		||||
  assign GHRE = BranchInstrM ? {PCSrcM, GHRM[k-1:1]} : GHRM;
 | 
			
		||||
 | 
			
		||||
  assign GHRNextM = {PCSrcM, GHRM[k-1:1]};
 | 
			
		||||
 | 
			
		||||
  flopenr #(k) GHRReg(clk, reset, ~StallW & ~FlushW & BranchInstrM, GHRNextM, GHRM);
 | 
			
		||||
  flopenrc #(1) PCSrcMReg(clk, reset, FlushM, ~StallM, PCSrcE, PCSrcM);
 | 
			
		||||
    
 | 
			
		||||
  flopenrc #(k) GHRFReg(clk, reset, FlushD, ~StallF, GHR, GHRF);
 | 
			
		||||
  flopenrc #(k) GHRDReg(clk, reset, FlushD, ~StallD, GHRF, GHRD);
 | 
			
		||||
  flopenrc #(k) GHREReg(clk, reset, FlushE, ~StallE, GHRD, GHRE);
 | 
			
		||||
  flopenrc #(k) GHRMReg(clk, reset, FlushM, ~StallM, GHRE, GHRM);
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
endmodule
 | 
			
		||||
 | 
			
		||||
@ -28,7 +28,8 @@
 | 
			
		||||
 | 
			
		||||
`include "wally-config.vh"
 | 
			
		||||
 | 
			
		||||
module gshareForward #(parameter k = 10) (
 | 
			
		||||
module gsharebasic #(parameter k = 10,
 | 
			
		||||
                     parameter string TYPE = "global") (
 | 
			
		||||
  input logic             clk,
 | 
			
		||||
  input logic             reset,
 | 
			
		||||
  input logic             StallF, StallD, StallE, StallM, StallW,
 | 
			
		||||
@ -36,54 +37,33 @@ module gshareForward #(parameter k = 10) (
 | 
			
		||||
  output logic [1:0]      DirPredictionF, 
 | 
			
		||||
  output logic            DirPredictionWrongE,
 | 
			
		||||
  // update
 | 
			
		||||
  input logic [`XLEN-1:0] PCNextF, PCF, PCD, PCE, PCM,
 | 
			
		||||
  input logic             BranchInstrF, BranchInstrD, BranchInstrE, BranchInstrM, PCSrcE
 | 
			
		||||
  input logic [`XLEN-1:0] PCNextF, PCM,
 | 
			
		||||
  input logic             BranchInstrE, BranchInstrM, PCSrcE
 | 
			
		||||
);
 | 
			
		||||
 | 
			
		||||
  logic                    MatchF, MatchD, MatchE, MatchM;
 | 
			
		||||
  logic                    MatchNextX, MatchXF;
 | 
			
		||||
 | 
			
		||||
  logic [1:0]              TableDirPredictionF, DirPredictionD, DirPredictionE, ForwardNewDirPrediction, ForwardDirPredictionF;
 | 
			
		||||
  logic [k-1:0]            IndexNextF, IndexE;
 | 
			
		||||
  logic [1:0]              DirPredictionD, DirPredictionE;
 | 
			
		||||
  logic [1:0]              NewDirPredictionE, NewDirPredictionM;
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
  logic [k-1:0]            IndexNextF, IndexF, IndexD, IndexE, IndexM;
 | 
			
		||||
 | 
			
		||||
  logic [k-1:0]            GHRF, GHRD, GHRE, GHRM, GHR;
 | 
			
		||||
  logic [k-1:0]            GHRNext, GHRNextF;
 | 
			
		||||
  logic [k-1:0]            GHRNext;
 | 
			
		||||
  logic                    PCSrcM;
 | 
			
		||||
 | 
			
		||||
  assign IndexNextF = GHRNextF ^ {PCNextF[k+1] ^ PCNextF[1], PCNextF[k:2]};
 | 
			
		||||
 | 
			
		||||
  assign IndexF = GHRF ^ {PCF[k+1] ^ PCF[1], PCF[k:2]};
 | 
			
		||||
  assign IndexD = GHRD ^ {PCD[k+1] ^ PCD[1], PCD[k:2]};
 | 
			
		||||
  assign IndexE = GHRE ^ {PCE[k+1] ^ PCE[1], PCE[k:2]};
 | 
			
		||||
  assign IndexM = GHRM ^ {PCM[k+1] ^ PCM[1], PCM[k:2]};
 | 
			
		||||
 | 
			
		||||
  assign MatchF = BranchInstrF & ~FlushD & (IndexNextF == IndexF);
 | 
			
		||||
  assign MatchD = BranchInstrD & ~FlushE & (IndexNextF == IndexD);
 | 
			
		||||
  assign MatchE = BranchInstrE & ~FlushM & (IndexNextF == IndexE);
 | 
			
		||||
  assign MatchM = BranchInstrM & ~FlushW & (IndexNextF == IndexM);
 | 
			
		||||
  assign MatchNextX = MatchF | MatchD | MatchE | MatchM;
 | 
			
		||||
 | 
			
		||||
  flopenr #(1) MatchReg(clk, reset, ~StallF, MatchNextX, MatchXF);
 | 
			
		||||
 | 
			
		||||
  assign ForwardNewDirPrediction = MatchF ? {2{DirPredictionF[1]}} :
 | 
			
		||||
                                   MatchD ? {2{DirPredictionD[1]}} :
 | 
			
		||||
                                   MatchE ? {NewDirPredictionE} :
 | 
			
		||||
                                   NewDirPredictionM ;
 | 
			
		||||
  if(TYPE == "gshare") begin
 | 
			
		||||
	assign IndexNextF = GHR ^ {PCNextF[k+1] ^ PCNextF[1], PCNextF[k:2]};
 | 
			
		||||
	assign IndexE = GHRM ^ {PCM[k+1] ^ PCM[1], PCM[k:2]};
 | 
			
		||||
  end else if(TYPE == "global") begin
 | 
			
		||||
	assign IndexNextF = {PCNextF[k+1] ^ PCNextF[1], PCNextF[k:2]};
 | 
			
		||||
	assign IndexE = {PCM[k+1] ^ PCM[1], PCM[k:2]};
 | 
			
		||||
  end
 | 
			
		||||
  
 | 
			
		||||
  flopenr #(2) ForwardDirPredicitonReg(clk, reset, ~StallF, ForwardNewDirPrediction, ForwardDirPredictionF);
 | 
			
		||||
 | 
			
		||||
  assign DirPredictionF = MatchXF ? ForwardDirPredictionF : TableDirPredictionF;
 | 
			
		||||
 | 
			
		||||
  ram2p1r1wbe #(2**k, 2) PHT(.clk(clk),
 | 
			
		||||
    .ce1(~StallF), .ce2(~StallM & ~FlushM),
 | 
			
		||||
    .ra1(IndexNextF),
 | 
			
		||||
    .rd1(TableDirPredictionF),
 | 
			
		||||
    .wa2(IndexM),
 | 
			
		||||
    .rd1(DirPredictionF),
 | 
			
		||||
    .wa2(IndexE),
 | 
			
		||||
    .wd2(NewDirPredictionM),
 | 
			
		||||
    .we2(BranchInstrM),
 | 
			
		||||
    .we2(BranchInstrM & ~StallW & ~FlushW),
 | 
			
		||||
    .bwe2(1'b1));
 | 
			
		||||
 | 
			
		||||
  flopenrc #(2) PredictionRegD(clk, reset,  FlushD, ~StallD, DirPredictionF, DirPredictionD);
 | 
			
		||||
@ -94,15 +74,14 @@ module gshareForward #(parameter k = 10) (
 | 
			
		||||
 | 
			
		||||
  assign DirPredictionWrongE = PCSrcE != DirPredictionE[1] & BranchInstrE;
 | 
			
		||||
 | 
			
		||||
  assign GHRNextF = BranchInstrF ? {DirPredictionF[1], GHRF[k-1:1]} : GHRF;
 | 
			
		||||
  assign GHRF = BranchInstrD  ? {DirPredictionD[1], GHRD[k-1:1]} : GHRD;
 | 
			
		||||
  assign GHRD = BranchInstrE ? {PCSrcE, GHRE[k-1:1]} : GHRE;
 | 
			
		||||
  assign GHRE = BranchInstrM ? {PCSrcM, GHRM[k-1:1]} : GHRM;
 | 
			
		||||
 | 
			
		||||
  assign GHRNext = BranchInstrM ? {PCSrcM, GHR[k-1:1]} : GHR;
 | 
			
		||||
  assign GHRM = GHR;
 | 
			
		||||
 | 
			
		||||
  flopenr #(k) GHRReg(clk, reset, ~StallW & ~FlushW & BranchInstrM, GHRNext, GHR);
 | 
			
		||||
  flopenr #(k) GHRReg(clk, reset, ~StallM & ~FlushM & BranchInstrM, GHRNext, GHR);
 | 
			
		||||
  flopenrc #(1) PCSrcMReg(clk, reset, FlushM, ~StallM, PCSrcE, PCSrcM);
 | 
			
		||||
    
 | 
			
		||||
  flopenrc #(k) GHRFReg(clk, reset, FlushD, ~StallF, GHR, GHRF);
 | 
			
		||||
  flopenrc #(k) GHRDReg(clk, reset, FlushD, ~StallD, GHRF, GHRD);
 | 
			
		||||
  flopenrc #(k) GHREReg(clk, reset, FlushE, ~StallE, GHRD, GHRE);
 | 
			
		||||
  flopenrc #(k) GHRMReg(clk, reset, FlushM, ~StallM, GHRE, GHRM);
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
endmodule
 | 
			
		||||
		Loading…
	
		Reference in New Issue
	
	Block a user