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busybear: check instead of providing InstrF

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This commit is contained in:
Noah Boorstin 2021-02-28 16:46:53 +00:00
parent 856a1079cc
commit 932bc0ef85
2 changed files with 27 additions and 45 deletions
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4
wally-pipelined/regression/wally-busybear.do
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@ -49,11 +49,11 @@ add wave -hex /testbench_busybear/PCtext
add wave -hex /testbench_busybear/pcExpected
add wave -hex /testbench_busybear/dut/hart/ifu/PCF
add wave -hex /testbench_busybear/dut/hart/ifu/InstrF
add wave /testbench_busybear/lastInstrF
add wave /testbench_busybear/CheckInstrF
add wave /testbench_busybear/lastCheckInstrF
add wave /testbench_busybear/speculative
add wave /testbench_busybear/lastPC2
add wave -divider
add wave -hex /testbench_busybear/readInstrF
add wave -hex /testbench_busybear/readRAM
#add wave -hex /testbench_busybear/dut/hart/priv/csr/MTVEC_REG
#add wave -hex /testbench_busybear/dut/hart/priv/csr/MSTATUS_REG

68
wally-pipelined/testbench/testbench-busybear.sv
View File

@ -7,8 +7,7 @@ module testbench_busybear();
logic [31:0] GPIOPinsOut, GPIOPinsEn;
// instantiate device to be tested
logic [`XLEN-1:0] PCF;
logic [31:0] InstrF;
logic [31:0] CheckInstrF;
logic [`AHBW-1:0] HRDATA;
logic [31:0] HADDR;
@ -178,10 +177,9 @@ module testbench_busybear();
logic [`XLEN-1:0] RAM[('h8000000 >> 3):0];
logic [`XLEN-1:0] bootram[('h2000 >> 3):0];
logic [`XLEN-1:0] readRAM;
logic [31:0] readInstrF;
integer RAMAdr, RAMPC;
assign RAMAdr = (HADDR - (HADDR > 'h2fff ? 'h80000000 : 'h1000)) >> 3;
assign RAMPC = (PCF - (PCF > 'h2fff ? 'h80000000 : 'h1000)) >> 3;
assign RAMPC = (dut.PCF - (dut.PCF > 'h2fff ? 'h80000000 : 'h1000)) >> 3;
logic [63:0] readMask;
assign readMask = ((1 << (8*(1 << HSIZE))) - 1) << 8 * HADDR[2:0];
@ -220,7 +218,7 @@ module testbench_busybear();
`ERROR
end
if (((readMask & HRDATA) != (readMask & readRAM)) && (HADDR >= 'h80000000 && HADDR <= 'h87FFFFFF)) begin
if (((readMask & HRDATA) !== (readMask & readRAM)) && (HADDR >= 'h80000000 && HADDR <= 'h87FFFFFF)) begin
$display("warning %0t ps, instr %0d: HRDATA does not equal readRAM: %x, %x from address %x, %x", $time, instrs, HRDATA, readRAM, HADDR, HSIZE);
warningCount += 1;
`ERROR
@ -311,7 +309,7 @@ module testbench_busybear();
`CHECK_CSR2(MTVAL, `CSRM)
`CHECK_CSR(MTVEC)
//`CHECK_CSR2(PMPADDR0, `CSRM)
//`CHECK_CSR2(PMPCFG0, `CSRM)
//`CHECK_CSR2(PMdut.PCFG0, `CSRM)
`CHECK_CSR2(SATP, `CSRS)
`CHECK_CSR2(SCAUSE, `CSRS)
`CHECK_CSR(SCOUNTEREN)
@ -325,9 +323,8 @@ module testbench_busybear();
logic speculative;
initial begin
speculative = 0;
speculative = 0;
end
logic [63:0] lastInstrF, lastPC, lastPC2;
logic [63:0] lastCheckInstrF, lastPC, lastPC2;
string PCtextW, PCtext2W;
logic [31:0] InstrWExpected;
@ -363,27 +360,12 @@ module testbench_busybear();
end
logic [31:0] InstrMask;
logic forcedInstr;
always @(PCF) begin
if (PCF >= 'h80000000 && PCF <= 'h87FFFFFF) begin
readInstrF = RAM[RAMPC] >> PCF[2:1] * 16;
if (PCF[2:1] == 2'b11) begin
readInstrF |= RAM[RAMPC+1] << 16;
end
end
if (PCF >= 'h1000 && PCF <= 'h2FFF) begin
readInstrF = bootram[RAMPC] >> PCF[2:1] * 16;
if (PCF[2:1] == 2'b11) begin
readInstrF |= bootram[RAMPC+1] << 16;
end
end
lastInstrF = InstrF;
lastPC <= PCF;
always @(dut.PCF) begin
lastCheckInstrF = CheckInstrF;
lastPC <= dut.PCF;
lastPC2 <= lastPC;
if (speculative && ~equal(lastPC,pcExpected,3)) begin
speculative = ~equal(PCF,pcExpected,3);
if (speculative && (lastPC != pcExpected)) begin
speculative = ~equal(dut.PCF,pcExpected,3);
end
else begin
if($feof(data_file_PC)) begin
@ -395,17 +377,17 @@ module testbench_busybear();
scan_file_PC = $fscanf(data_file_PC, "%s\n", PCtext2);
PCtext = {PCtext, " ", PCtext2};
end
scan_file_PC = $fscanf(data_file_PC, "%x\n", InstrF);
if(InstrF[6:0] == 7'b1010011) begin // for now, NOP out any float instrs
InstrF = 32'b0010011;
$display("warning: NOPing out %s at PC=%0x", PCtext, PCF);
scan_file_PC = $fscanf(data_file_PC, "%x\n", CheckInstrF);
if(CheckInstrF[6:0] == 7'b1010011) begin // for now, NOP out any float instrs
CheckInstrF = 32'b0010011;
$display("warning: NOPing out %s at PC=%0x", PCtext, dut.PCF);
warningCount += 1;
forcedInstr = 1;
end
else begin
if(InstrF[28:27] != 2'b11 && InstrF[6:0] == 7'b0101111) begin //for now, replace non-SC A instrs with LD
InstrF = {12'b0, InstrF[19:7], 7'b0000011};
$display("warning: replacing AMO instr %s at PC=%0x with ld", PCtext, PCF);
if(CheckInstrF[28:27] != 2'b11 && CheckInstrF[6:0] == 7'b0101111) begin //for now, replace non-SC A instrs with LD
CheckInstrF = {12'b0, CheckInstrF[19:7], 7'b0000011};
$display("warning: replacing AMO instr %s at PC=%0x with ld", PCtext, dut.PCF);
warningCount += 1;
forcedInstr = 1;
end
@ -422,7 +404,7 @@ module testbench_busybear();
end
instrs += 1;
// are we at a branch/jump?
casex (lastInstrF[31:0])
casex (lastCheckInstrF[31:0])
32'b00000000001000000000000001110011, // URET
32'b00010000001000000000000001110011, // SRET
32'b00110000001000000000000001110011, // MRET
@ -443,14 +425,14 @@ module testbench_busybear();
endcase
//check things!
if ((~speculative) && (~equal(PCF,pcExpected,3))) begin
$display("%0t ps, instr %0d: PC does not equal PC expected: %x, %x", $time, instrs, PCF, pcExpected);
if ((~speculative) && (~equal(dut.PCF,pcExpected,3))) begin
$display("%0t ps, instr %0d: PC does not equal PC expected: %x, %x", $time, instrs, dut.PCF, pcExpected);
`ERROR
end
InstrMask = InstrF[1:0] == 2'b11 ? 32'hFFFFFFFF : 32'h0000FFFF;
if ((~forcedInstr) && (~speculative) && ((InstrMask & readInstrF) != (InstrMask & InstrF))) begin
$display("%0t ps, instr %0d: readInstrF does not equal InstrF: %x, %x, PC: %x", $time, instrs, readInstrF, InstrF, PCF);
warningCount += 1;
InstrMask = CheckInstrF[1:0] == 2'b11 ? 32'hFFFFFFFF : 32'h0000FFFF;
if ((~forcedInstr) && (~speculative) && ((InstrMask & dut.InstrF) !== (InstrMask & CheckInstrF))) begin
$display("%0t ps, instr %0d: InstrF does not equal CheckInstrF: %x, %x, PC: %x", $time, instrs, dut.InstrF, CheckInstrF, dut.PCF);
`ERROR
end
end
end
@ -458,7 +440,7 @@ module testbench_busybear();
// Track names of instructions
string InstrFName, InstrDName, InstrEName, InstrMName, InstrWName;
logic [31:0] InstrW;
instrNameDecTB dec(InstrF, InstrFName);
instrNameDecTB dec(dut.InstrF, InstrFName);
instrTrackerTB it(clk, reset, dut.hart.ieu.dp.FlushE,
dut.hart.ifu.InstrD, dut.hart.ifu.InstrE,
dut.hart.ifu.InstrM, InstrW,