105 lines
3.0 KiB
Plaintext
105 lines
3.0 KiB
Plaintext
import "RV32IBase.core_desc"
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InsructionSet RV32F extends RV32IBase{
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constants {
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FLEN, fcsr
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}
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registers {
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[31:0] F[FLEN]
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}
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instructions{
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FLW {
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encoding: imm[11:0]s | rs1[4:0] | b010 | rd[4:0] | b0000111;
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val offs[XLEN] <= X[rs1]+imm;
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F[rd]<=MEM[offs];
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}
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FSW {
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encoding: imm[11:5]s | rs2[4:0] | rs1[4:0] | b010 | imm[4:0]s | b0100111;
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val offs[XLEN] <= X[rs1]+imm;
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MEM[offs]<=F[rs2];
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}
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FMADD.S {
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encoding: rs3[4:0] | b00 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1000011;
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F[rd]f<= F[rs1]f * F[rs2]f * F[rs3]f;
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}
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FMSUB.S {
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encoding: rs3[4:0] | b00 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1000111;
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F[rd]f<=F[rs1]f * F[rs2]f -F[rs3]f;
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}
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FNMSUB.S {
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encoding: rs3[4:0] | b00 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1001011;
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F[rd]f<=-F[rs1]f * F[rs2]f- F[rs3]f;
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}
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FNMADD.S {
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encoding: rs3[4:0] | b00 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1001111;
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F[rd]f<=-F[rs1]f*F[rs2]f+F[rs3]f;
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}
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FADD.S {
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encoding: b0000000 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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F[rd]f <= F[rs1]f + F[rs2]f;
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}
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FSUB.S {
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encoding: b0000100 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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F[rd]f <= F[rs1]f - F[rs2]f;
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}
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FMUL.S {
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encoding: b0001000 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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F[rd]f <= F[rs1]f * F[rs2];
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}
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FDIV.S {
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encoding: b0001100 | rs2[4:0] | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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F[rd]f <= F[rs1]f / F[rs2]f;
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}
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FSQRT.S {
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encoding: b0101100 | b00000 | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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F[rd]f<=sqrt(F[rs1]f);
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}
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FSGNJ.S {
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encoding: b0010000 | rs2[4:0] | rs1[4:0] | b000 | rd[4:0] | b1010011;
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}
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FSGNJN.S {
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encoding: b0010000 | rs2[4:0] | rs1[4:0] | b001 | rd[4:0] | b1010011;
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}
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FSGNJX.S {
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encoding: b0010000 | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b1010011;
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}
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FMIN.S {
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encoding: b0010100 | rs2[4:0] | rs1[4:0] | b000 | rd[4:0] | b1010011;
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F[rd]f<= choose(F[rs1]f<F[rs2]f, F[rs1]f, F[rs2]f);
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}
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FMAX.S {
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encoding: b0010100 | rs2[4:0] | rs1[4:0] | b001 | rd[4:0] | b1010011;
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F[rd]f<= choose(F[rs1]f>F[rs2]f, F[rs1]f, F[rs2]f);
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}
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FCVT.W.S {
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encoding: b1100000 | b00000 | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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}
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FCVT.WU.S {
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encoding: b1100000 | b00001 | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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}
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FMV.X.W {
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encoding: b1110000 | b00000 | rs1[4:0] | b000 | rd[4:0] | b1010011;
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}
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FEQ.S {
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encoding: b1010000 | rs2[4:0] | rs1[4:0] | b010 | rd[4:0] | b1010011;
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}
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FLT.S {
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encoding: b1010000 | rs2[4:0] | rs1[4:0] | b001 | rd[4:0] | b1010011;
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}
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FLE.S {
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encoding: b1010000 | rs2[4:0] | rs1[4:0] | b000 | rd[4:0] | b1010011;
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}
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FCLASS.S {
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encoding: b1110000 | b00000 | rs1[4:0] | b001 | rd[4:0] | b1010011;
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}
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FCVT.S.W {
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encoding: b1101000 | b00000 | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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}
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FCVT.S.WU {
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encoding: b1101000 | b00001 | rs1[4:0] | rm[2:0] | rd[4:0] | b1010011;
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}
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FMV.W.X {
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encoding: b1111000 | b00000 | rs1[4:0] | b000 | rd[4:0] | b1010011;
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}
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}
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} |