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57 lines
928 B
Systemverilog
57 lines
928 B
Systemverilog
localparam [0:0]
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OFFSET_SOURCE_IMM = 1'd0,
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OFFSET_SOURCE_RS1 = 1'd1;
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localparam [0:0]
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OP_B_SOURCE_IMM = 1'd0,
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OP_B_SOURCE_RS2 = 1'd1;
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localparam[2:0]
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ALU_RESULT_ADD = 3'd0,
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ALU_RESULT_SR = 3'd1,
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ALU_RESULT_LT = 3'd2,
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ALU_RESULT_XOR = 3'd3,
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ALU_RESULT_OR = 3'd4,
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ALU_RESULT_AND = 3'd5;
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localparam [0:0]
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ALU_CMP_LT = 1'b0,
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ALU_CMP_EQ = 1'b1;
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/*
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source
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ADD, SUB
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SL,SR
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SLT
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XOR,
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OR
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AND
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*/
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/*
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300 mstatus RWSC
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304 mie SCWi
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305 mtvec RW
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344 mip CWi
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340 mscratch
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341 mepc RW
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342 mcause R
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343 mtval
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*/
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localparam [2:0]
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CSR_SEL_MSTATUS = 3'd0,
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CSR_SEL_MIE = 3'd1,
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CSR_SEL_MTVEC = 3'd2,
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CSR_SEL_MIP = 3'd3,
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CSR_SEL_MSCRATCH = 3'd4,
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CSR_SEL_MEPC = 3'd5,
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CSR_SEL_MCAUSE = 3'd6,
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CSR_SEL_MTVAL = 3'd7;
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localparam [1:0]
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CSR_SOURCE_CSR = 2'b00,
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CSR_SOURCE_EXT = 2'b01,
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CSR_SOURCE_SET = 2'b10,
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CSR_SOURCE_CLR = 2'b11;
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