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Fixed bug # 547, but there are other bugs which follow.

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This commit is contained in:
Rose Thompson 2024-01-05 23:32:10 -06:00
parent 564b5abeb5
commit 1f3792c823
2 changed files with 2 additions and 2 deletions
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2
src/mmu/mmu.sv
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@ -145,5 +145,5 @@ module mmu import cvw::*; #(parameter cvw_t P,
// Specify which type of page fault is occurring // Specify which type of page fault is occurring
assign InstrPageFaultF = TLBPageFault & ExecuteAccessF; assign InstrPageFaultF = TLBPageFault & ExecuteAccessF;
assign LoadPageFaultM = TLBPageFault & ReadNoAmoAccessM; assign LoadPageFaultM = TLBPageFault & ReadNoAmoAccessM;
assign StoreAmoPageFaultM = TLBPageFault & WriteAccessM; assign StoreAmoPageFaultM = TLBPageFault & (WriteAccessM | (|CMOpM));
endmodule endmodule

2
src/mmu/tlb/tlbcontrol.sv
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@ -111,7 +111,7 @@ module tlbcontrol import cvw::*; #(parameter cvw_t P, ITLB = 0) (
// Check for write error. Writes are invalid when the page's write bit is // Check for write error. Writes are invalid when the page's write bit is
// low. // low.
assign InvalidWrite = WriteAccess & ~PTE_W; assign InvalidWrite = WriteAccess & ~PTE_W;
assign InvalidCBOM = (|CMOpM[2:0]) & (~PTE_W | (~PTE_R & (~STATUS_MXR | ~PTE_X))); assign InvalidCBOM = (|CMOpM[2:0]) & (~PTE_W & (~PTE_R & (~STATUS_MXR | ~PTE_X)));
assign InvalidCBOZ = CMOpM[3] & ~PTE_W; assign InvalidCBOZ = CMOpM[3] & ~PTE_W;
assign InvalidAccess = InvalidRead | InvalidWrite | InvalidCBOM | InvalidCBOZ; assign InvalidAccess = InvalidRead | InvalidWrite | InvalidCBOM | InvalidCBOZ;
assign PreUpdateDA = ~PTE_A | WriteAccess & ~PTE_D; assign PreUpdateDA = ~PTE_A | WriteAccess & ~PTE_D;