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Check fma operations don't support H precision

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David Harris 2024-01-16 11:12:06 -08:00
parent 1a77c08f6e
commit 846a0c4d50
1 changed files with 3 additions and 2 deletions
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5
src/fpu/fctrl.sv
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@ -84,8 +84,9 @@ module fctrl import cvw::*; #(parameter cvw_t P) (
assign Fmt = Funct7D[1:0];
assign Fmt2 = Rs2D[1:0]; // source format for fcvt fp->fp
assign SupportedFmt = (Fmt == 2'b00 | (Fmt == 2'b01 & P.D_SUPPORTED) |
(Fmt == 2'b10 & P.ZFH_SUPPORTED) | (Fmt == 2'b11 & P.Q_SUPPORTED));
assign SupportedFmt = (Fmt == 2'b00 | (Fmt == 2'b01 & P.D_SUPPORTED) |
(Fmt == 2'b10 & P.ZFH_SUPPORTED & {OpD[6:4], OpD[1:0]} != 5'b10011) | // fma not supported for Zfh
(Fmt == 2'b11 & P.Q_SUPPORTED));
assign SupportedFmt2 = (Fmt2 == 2'b00 | (Fmt2 == 2'b01 & P.D_SUPPORTED) |
(Fmt2 == 2'b10 & P.ZFH_SUPPORTED) | (Fmt2 == 2'b11 & P.Q_SUPPORTED));