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Fixed bugs in Zcb compressed loads and stores

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This commit is contained in:
David Harris 2024-04-20 13:16:31 -07:00
parent 0fc66268f8
commit 9ec4c752f1
1 changed files with 3 additions and 3 deletions
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6
src/ifu/decompress.sv
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@ -107,16 +107,16 @@ module decompress import cvw::*; #(parameter cvw_t P) (
InstrD = {immCLD, rs1p, 3'b011, rdp, 7'b0000011}; // c.ld;
5'b00100: if (P.ZCB_SUPPORTED)
if (instr16[12:10] == 3'b000)
InstrD = {10'b0, instr16[6:5], rs1p, 3'b100, rdp, 7'b0000011}; // c.lbu
InstrD = {10'b0, instr16[5], instr16[6], rs1p, 3'b100, rdp, 7'b0000011}; // c.lbu
else if (instr16[12:10] == 3'b001) begin
if (instr16[6])
InstrD = {10'b0, instr16[5], 1'b0, rs1p, 3'b001, rdp, 7'b0000011}; // c.lh
else
InstrD = {10'b0, instr16[5], 1'b0, rs1p, 3'b101, rdp, 7'b0000011}; // c.lhu
end else if (instr16[12:10] == 3'b010)
InstrD = {7'b0, rs2p, rs1p, 3'b000, 3'b000, instr16[6:5], 7'b0000011}; // c.sb
InstrD = {7'b0, rs2p, rs1p, 3'b000, 3'b000, instr16[5], instr16[6], 7'b0100011}; // c.sb
else if (instr16[12:10] == 3'b011 & instr16[6] == 1'b0)
InstrD = {7'b0, rs2p, rs1p, 3'b001, 3'b000, instr16[5], 1'b0, 7'b0000011}; // c.sh
InstrD = {7'b0, rs2p, rs1p, 3'b001, 3'b000, instr16[5], 1'b0, 7'b0100011}; // c.sh
else begin
IllegalCompInstrD = 1;
InstrD = {16'b0, instr16}; // preserve instruction for mtval on trap