Github_Repos/cvw
1
0
Fork 1
mirror of https://github.com/openhwgroup/cvw synced 2025-01-23 21:14:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

sucessfully simulate first 30 instructions

Browse Source 
still need to find a better solution to InstrAccessFault/DataAccessFault though
This commit is contained in:
Noah Boorstin 2021-01-23 19:01:44 -05:00
parent 71883dca82
commit 6d84658369
1 changed files with 29 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
wally-pipelined/src/testbench-busybear.sv
View File

@ -37,15 +37,6 @@ module testbench_busybear #(parameter XLEN=64, MISA=32'h00000104, ZCSR = 1, ZCOU
$display("file couldn't be opened");
$stop;
end
// scan_file = $fscanf(data_file, "%x\n", read_data);
// $display("%x", read_data);
// scan_file = $fscanf(data_file, "%s\n", read_data);
// $display("%s", read_data);
// //if (!$feof(data_file)) begin
// // $display(read_data);
// //end
// end
end
// read register trace file
@ -98,16 +89,37 @@ module testbench_busybear #(parameter XLEN=64, MISA=32'h00000104, ZCSR = 1, ZCOU
end
end
logic speculative, nextSpec;
initial begin
speculative = 0;
nextSpec = 0;
end
always @(PCF) begin
// first read instruction
scan_file_PC = $fscanf(data_file_PC, "%x\n", InstrF);
// then expected PC value
scan_file_PC = $fscanf(data_file_PC, "%x\n", pcExpected);
//check things!
if (PCF !== pcExpected) begin
$display("%t ps: PC does not equal PC expected: %x, %x", $time, PCF, pcExpected);
// $stop;
speculative <= nextSpec;
if (speculative) begin
speculative <= (PCF != pcExpected);
end
if (~speculative) begin
// first read instruction
scan_file_PC = $fscanf(data_file_PC, "%x\n", InstrF);
// then expected PC value
scan_file_PC = $fscanf(data_file_PC, "%x\n", pcExpected);
// are we at a branch/jump?
case (InstrF[6:0]) //todo: add C versions of these
7'b1101111, //JAL
7'b1100111, //JALR
7'b1100011: //B
nextSpec <= 1;
default:
nextSpec <= 0;
endcase
//check things!
if ((~nextSpec) && (PCF !== pcExpected)) begin
$display("%t ps: PC does not equal PC expected: %x, %x", $time, PCF, pcExpected);
// $stop;
end
end
end