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ignore mhpmcounters because QEMU doesn't implement them

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bbracker 2021-07-20 13:37:52 -04:00
parent a1ea654b11
commit 6b72b1f859
1 changed files with 4 additions and 1 deletions
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5
wally-pipelined/testbench/testbench-linux.sv
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@ -27,7 +27,7 @@
module testbench();
parameter waveOnICount = `BUSYBEAR*140000 + `BUILDROOT*0675000; // # of instructions at which to turn on waves in graphical sim
parameter waveOnICount = `BUSYBEAR*140000 + `BUILDROOT*0900000; // # of instructions at which to turn on waves in graphical sim
parameter stopICount = `BUSYBEAR*143898 + `BUILDROOT*0000000; // # instructions at which to halt sim completely (set to 0 to let it run as far as it can)
///////////////////////////////////////////////////////////////////////////////
@ -191,6 +191,9 @@ module testbench();
// Hack to compensate for QEMU's correct but different MTVAL (according to spec, storing the faulting instr is an optional feature)
if (PCtextW.substr(0,3) == "csrr" && PCtextW.substr(10,14) == "mtval") begin
force dut.hart.ieu.dp.WriteDataW = 0;
// Hack to compensate for QEMU's correct but different mhpmcounter's (these too are optional)
end else if (PCtextW.substr(0,3) == "csrr" && PCtextW.substr(10,20) == "mhpmcounter") begin
force dut.hart.ieu.dp.WriteDataW = 0;
end else release dut.hart.ieu.dp.WriteDataW;
end
end