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Fixed handling writing reserved 10 value to mstatus.mpp

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David Harris 2024-10-14 08:42:52 -07:00
parent 5ef5633a62
commit 43162aa088
1 changed files with 2 additions and 1 deletions
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src/privileged/csrsr.sv
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@ -106,7 +106,8 @@ module csrsr import cvw::*; #(parameter cvw_t P) (
always_comb
if (CSRWriteValM[12:11] == P.U_MODE & P.U_SUPPORTED) STATUS_MPP_NEXT = P.U_MODE;
else if (CSRWriteValM[12:11] == P.S_MODE & P.S_SUPPORTED) STATUS_MPP_NEXT = P.S_MODE;
else STATUS_MPP_NEXT = P.M_MODE;
else if (CSRWriteValM[12:11] == 2'b10) STATUS_MPP_NEXT = STATUS_MPP; // do not change MPP when trying to write reserved 10
else STATUS_MPP_NEXT = P.M_MODE;
///////////////////////////////////////////
// Endianness logic Privileged Spec 3.1.6.4