forked from Github_Repos/cvw
formatted bmu decoder
This commit is contained in:
Kevin Kim
parent
1b222f91be
commit
2d7d143f6d
@ -70,85 +70,85 @@ module bmuctrl(
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casez({OpD, Funct7D, Funct3D})
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// ALUSelect_BSelect_ZBBSelect_BRegWrite_BW64_BALUOp
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// ZBS
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17'b0010011_0100100_001: BMUControlsD = `BMUCTRLW'b111_0001_000_101; // bclri
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17'b0010011_0100100_001: BMUControlsD = `BMUCTRLW'b111_0001_000_1_0_1; // bclri
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17'b0010011_0100101_001: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b111_0001_000_101; // bclri (rv64)
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BMUControlsD = `BMUCTRLW'b111_0001_000_1_0_1; // bclri (rv64)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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17'b0010011_0100100_101: BMUControlsD = `BMUCTRLW'b101_0001_000_101; // bexti
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0010011_0100100_101: BMUControlsD = `BMUCTRLW'b101_0001_000_1_0_1; // bexti
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17'b0010011_0100101_101: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b101_0001_000_101; // bexti (rv64)
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BMUControlsD = `BMUCTRLW'b101_0001_000_1_0_1; // bexti (rv64)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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17'b0010011_0110100_001: BMUControlsD = `BMUCTRLW'b100_0001_000_101; // binvi
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0010011_0110100_001: BMUControlsD = `BMUCTRLW'b100_0001_000_1_0_1; // binvi
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17'b0010011_0110101_001: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b100_0001_000_101; // binvi (rv64)
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BMUControlsD = `BMUCTRLW'b100_0001_000_1_0_1; // binvi (rv64)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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17'b0010011_0010100_001: BMUControlsD = `BMUCTRLW'b110_0001_000_101; // bseti
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0010011_0010100_001: BMUControlsD = `BMUCTRLW'b110_0001_000_1_0_1; // bseti
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17'b0010011_0010101_001: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b110_0001_000_101; // bseti (rv64)
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BMUControlsD = `BMUCTRLW'b110_0001_000_1_0_1; // bseti (rv64)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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17'b0110011_0100100_001: BMUControlsD = `BMUCTRLW'b111_0001_000_101; // bclr
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17'b0110011_0100100_101: BMUControlsD = `BMUCTRLW'b101_0001_000_101; // bext
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17'b0110011_0110100_001: BMUControlsD = `BMUCTRLW'b100_0001_000_101; // binv
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17'b0110011_0010100_001: BMUControlsD = `BMUCTRLW'b110_0001_000_101; // bset
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17'b0?1?011_0?0000?_?01: BMUControlsD = `BMUCTRLW'b001_0000_000_101; // sra, srai, srl, srli, sll, slli
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0110011_0100100_001: BMUControlsD = `BMUCTRLW'b111_0001_000_1_0_1; // bclr
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17'b0110011_0100100_101: BMUControlsD = `BMUCTRLW'b101_0001_000_1_0_1; // bext
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17'b0110011_0110100_001: BMUControlsD = `BMUCTRLW'b100_0001_000_1_0_1; // binv
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17'b0110011_0010100_001: BMUControlsD = `BMUCTRLW'b110_0001_000_1_0_1; // bset
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17'b0?1?011_0?0000?_?01: BMUControlsD = `BMUCTRLW'b001_0000_000_1_0_1; // sra, srai, srl, srli, sll, slli
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// ZBC
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17'b0110011_0000101_0??: BMUControlsD = `BMUCTRLW'b000_0010_000_101; // ZBC instruction
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17'b0110011_0000101_0??: BMUControlsD = `BMUCTRLW'b000_0010_000_1_0_1; // ZBC instruction
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// ZBA
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17'b0110011_0010000_010: BMUControlsD = `BMUCTRLW'b000_1000_000_101; // sh1add
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17'b0110011_0010000_100: BMUControlsD = `BMUCTRLW'b000_1000_000_101; // sh2add
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17'b0110011_0010000_110: BMUControlsD = `BMUCTRLW'b000_1000_000_101; // sh3add
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17'b0111011_0010000_010: BMUControlsD = `BMUCTRLW'b000_1000_000_111; // sh1add.uw
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17'b0111011_0010000_100: BMUControlsD = `BMUCTRLW'b000_1000_000_111; // sh2add.uw
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17'b0111011_0010000_110: BMUControlsD = `BMUCTRLW'b000_1000_000_111; // sh3add.uw
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17'b0111011_0000100_000: BMUControlsD = `BMUCTRLW'b000_1000_000_111; // add.uw
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17'b0011011_000010?_001: BMUControlsD = `BMUCTRLW'b001_1000_000_111; // slli.uw
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17'b0110011_0010000_010: BMUControlsD = `BMUCTRLW'b000_1000_000_1_0_1; // sh1add
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17'b0110011_0010000_100: BMUControlsD = `BMUCTRLW'b000_1000_000_1_0_1; // sh2add
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17'b0110011_0010000_110: BMUControlsD = `BMUCTRLW'b000_1000_000_1_0_1; // sh3add
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17'b0111011_0010000_010: BMUControlsD = `BMUCTRLW'b000_1000_000_1_1_1; // sh1add.uw
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17'b0111011_0010000_100: BMUControlsD = `BMUCTRLW'b000_1000_000_1_1_1; // sh2add.uw
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17'b0111011_0010000_110: BMUControlsD = `BMUCTRLW'b000_1000_000_1_1_1; // sh3add.uw
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17'b0111011_0000100_000: BMUControlsD = `BMUCTRLW'b000_1000_000_1_1_1; // add.uw
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17'b0011011_000010?_001: BMUControlsD = `BMUCTRLW'b001_1000_000_1_1_1; // slli.uw
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// ZBB
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17'b0110011_0110000_001: BMUControlsD = `BMUCTRLW'b001_0100_111_101; // rol
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17'b0111011_0110000_001: BMUControlsD = `BMUCTRLW'b001_0100_111_111; // rolw
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17'b0110011_0110000_101: BMUControlsD = `BMUCTRLW'b001_0100_111_101; // ror
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17'b0111011_0110000_101: BMUControlsD = `BMUCTRLW'b001_0100_111_111; // rorw
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17'b0010011_0110000_101: BMUControlsD = `BMUCTRLW'b001_0100_111_101; // rori (rv32)
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17'b0110011_0110000_001: BMUControlsD = `BMUCTRLW'b001_0100_111_1_0_1; // rol
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17'b0111011_0110000_001: BMUControlsD = `BMUCTRLW'b001_0100_111_1_1_1; // rolw
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17'b0110011_0110000_101: BMUControlsD = `BMUCTRLW'b001_0100_111_1_0_1; // ror
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17'b0111011_0110000_101: BMUControlsD = `BMUCTRLW'b001_0100_111_1_1_1; // rorw
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17'b0010011_0110000_101: BMUControlsD = `BMUCTRLW'b001_0100_111_1_0_1; // rori (rv32)
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17'b0010011_0110001_101: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b001_0100_111_101; // rori (rv64)
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BMUControlsD = `BMUCTRLW'b001_0100_111_1_0_1; // rori (rv64)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0011011_0110000_101: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b001_0100_111_111; // roriw
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BMUControlsD = `BMUCTRLW'b001_0100_111_1_1_1; // roriw
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0010011_0110000_001: if (Rs2D[2])
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BMUControlsD = `BMUCTRLW'b000_0100_100_101; // sign extend instruction
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BMUControlsD = `BMUCTRLW'b000_0100_100_1_0_1; // sign extend instruction
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else
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BMUControlsD = `BMUCTRLW'b000_0100_000_101; // count instruction
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17'b0011011_0110000_001: BMUControlsD = `BMUCTRLW'b000_0100_000_111; // count word instruction
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BMUControlsD = `BMUCTRLW'b000_0100_000_1_0_1; // count instruction
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17'b0011011_0110000_001: BMUControlsD = `BMUCTRLW'b000_0100_000_1_1_1; // count word instruction
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17'b0111011_0000100_100: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b000_0100_100_101; // zexth (rv64)
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BMUControlsD = `BMUCTRLW'b000_0100_100_1_0_1; // zexth (rv64)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0110011_0000100_100: if (`XLEN == 32)
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BMUControlsD = `BMUCTRLW'b000_0100_100_101; // zexth (rv32)
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BMUControlsD = `BMUCTRLW'b000_0100_100_1_0_1; // zexth (rv32)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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17'b0110011_0100000_111: BMUControlsD = `BMUCTRLW'b111_0100_111_101; // andn
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17'b0110011_0100000_110: BMUControlsD = `BMUCTRLW'b110_0100_111_101; // orn
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17'b0110011_0100000_100: BMUControlsD = `BMUCTRLW'b100_0100_111_101; // xnor
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0110011_0100000_111: BMUControlsD = `BMUCTRLW'b111_0100_111_1_0_1; // andn
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17'b0110011_0100000_110: BMUControlsD = `BMUCTRLW'b110_0100_111_1_0_1; // orn
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17'b0110011_0100000_100: BMUControlsD = `BMUCTRLW'b100_0100_111_1_0_1; // xnor
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17'b0010011_0110101_101: if (`XLEN == 64)
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BMUControlsD = `BMUCTRLW'b000_0100_011_101; // rev8 (rv64)
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BMUControlsD = `BMUCTRLW'b000_0100_011_1_0_1; // rev8 (rv64)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0010011_0110100_101: if (`XLEN == 32)
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BMUControlsD = `BMUCTRLW'b000_0100_011_101; // rev8 (rv32)
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BMUControlsD = `BMUCTRLW'b000_0100_011_1_0_1; // rev8 (rv32)
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else
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BMUControlsD = `BMUCTRLW'b000_0000_000_000; // illegal instruction
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17'b0010011_0010100_101: BMUControlsD = `BMUCTRLW'b000_0100_011_101; // orc.b
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17'b0110011_0000101_110: BMUControlsD = `BMUCTRLW'b000_0100_101_101; // max
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17'b0110011_0000101_111: BMUControlsD = `BMUCTRLW'b000_0100_101_101; // maxu
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17'b0110011_0000101_100: BMUControlsD = `BMUCTRLW'b000_0100_110_101; // min
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17'b0110011_0000101_101: BMUControlsD = `BMUCTRLW'b000_0100_110_101; // minu
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BMUControlsD = `BMUCTRLW'b000_0000_000_0_0_0; // illegal instruction
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17'b0010011_0010100_101: BMUControlsD = `BMUCTRLW'b000_0100_011_1_0_1; // orc.b
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17'b0110011_0000101_110: BMUControlsD = `BMUCTRLW'b000_0100_101_1_0_1; // max
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17'b0110011_0000101_111: BMUControlsD = `BMUCTRLW'b000_0100_101_1_0_1; // maxu
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17'b0110011_0000101_100: BMUControlsD = `BMUCTRLW'b000_0100_110_1_0_1; // min
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17'b0110011_0000101_101: BMUControlsD = `BMUCTRLW'b000_0100_110_1_0_1; // minu
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default: BMUControlsD = {Funct3D, {10'b0}}; // not B instruction or shift
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endcase
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