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Update fpctrl fmt to work for fround instructions

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Jordan Carlin 2024-05-24 15:33:45 -07:00
parent ae29a9b861
commit fb77440a64
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1 changed files with 2 additions and 2 deletions
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src/fpu/fctrl.sv
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@ -273,10 +273,10 @@ module fctrl import cvw::*; #(parameter cvw_t P) (
assign FmtD = 1'b0;
else if (P.FPSIZES == 2) begin
logic [1:0] FmtTmp;
assign FmtTmp = ((Funct7D[6:3] == 4'b0100)&OpD[4]) ? Rs2D[1:0] : (~OpD[6]&(&OpD[2:0])) ? {~Funct3D[1], ~(Funct3D[1]^Funct3D[0])} : Funct7D[1:0];
assign FmtTmp = ((Funct7D[6:3] == 4'b0100)&OpD[4]&~Rs2D[2]) ? Rs2D[1:0] : (~OpD[6]&(&OpD[2:0])) ? {~Funct3D[1], ~(Funct3D[1]^Funct3D[0])} : Funct7D[1:0];
assign FmtD = (P.FMT == FmtTmp);
end else if (P.FPSIZES == 3|P.FPSIZES == 4)
assign FmtD = ((Funct7D[6:3] == 4'b0100)&OpD[4]) ? Rs2D[1:0] : Funct7D[1:0];
assign FmtD = ((Funct7D[6:3] == 4'b0100)&OpD[4]&~Rs2D[2]) ? Rs2D[1:0] : Funct7D[1:0];
// Enables indicate that a source register is used and may need stalls. Also indicate special cases for infinity or NaN.
// When disabled infinity and NaN on source registers are ignored by the unpacker and thus special case logic.