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Fixed issue with rvvi tracer so it reports call csr changes, not just instrutions which write the CSRs.

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This commit is contained in:
Ross Thompson 2023-01-16 13:35:06 -06:00
parent 4aa2b5737f
commit fabe13bdce
1 changed files with 18 additions and 3 deletions
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21
pipelined/testbench/common/rvvitrace.sv
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@ -39,6 +39,7 @@ module rvviTrace #(
logic [4:0] frf_a4;
logic frf_we4;
logic [`XLEN-1:0] CSRArray [logic[11:0]];
logic [`XLEN-1:0] CSRArrayOld [logic[11:0]];
logic CSRWriteM, CSRWriteW;
logic [11:0] CSRAdrM, CSRAdrW;
@ -202,10 +203,24 @@ module rvviTrace #(
assign f_wb[0][0][index] = frf_wb[index];
end
// record previous csr value.
integer index4;
always_ff @(posedge clk) begin
for (index4 = 0; index4 < `NUM_CSRS; index4 += 1) begin
if(CSRArray.exists(index4)) begin
CSRArrayOld[index4] = CSRArray[index4];
end
end
end
// check for csr value change.
integer index5;
always_comb begin
csr_wb[0][0] <= '0;
if(CSRWriteW)
csr_wb[0][0][CSRAdrW] <= 1'b1;
for(index5 = 0; index5 < `NUM_CSRS; index5 += 1) begin
if(CSRArray.exists(index5)) begin
csr_wb[0][0][index5] = CSRArrayOld[index5] != CSRArray[index5] ? 1'b1 : 1'b0;
end else csr_wb[0][0][index5] = '0;
end
end
integer index3;