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Don't store bit 1 of mepc on non-RVC implementations

This commit is contained in:
Luke Wren 2022-05-23 12:27:07 +01:00
parent 31061bd472
commit c4e81922da
1 changed files with 2 additions and 2 deletions
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4
hdl/hazard3_csr.v
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@ -339,8 +339,8 @@ end
// Exception program counter // Exception program counter
reg [XLEN-1:0] mepc; reg [XLEN-1:0] mepc;
// LSB is always 0 // mepc only holds values aligned to instruction alignment
localparam MEPC_MASK = {{XLEN-1{1'b1}}, 1'b0}; localparam MEPC_MASK = {{XLEN-2{1'b1}}, |EXTENSION_C, 1'b0};
always @ (posedge clk or negedge rst_n) begin always @ (posedge clk or negedge rst_n) begin
if (!rst_n) begin if (!rst_n) begin