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|
// shift unit:
// Shift part of alu.
module shift_unit (
input signed [31:0] a,
input [4:0] b,
input [1:0] op,
output reg [31:0] result
);
`include "include/consts.vh"
always @ (*) begin
case (op)
SHIFT_OP_SLL: result = a << b; // SLL
SHIFT_OP_SRL: result = a >> b; // SRL
SHIFT_OP_SRA: result = a >>> b; // SRA
default: result = 32'b0;
endcase
end
endmodule
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