| module ibex_register_file ( |
| clk, |
| rst_n, |
| test_en_i, |
| raddr_a_i, |
| rdata_a_o, |
| raddr_b_i, |
| rdata_b_o, |
| waddr_a_i, |
| wdata_a_i, |
| we_a_i |
| ); |
| parameter [0:0] RV32E = 0; |
| parameter DATA_WIDTH = 32; |
| input wire clk; |
| input wire rst_n; |
| input wire test_en_i; |
| input wire [4:0] raddr_a_i; |
| output wire [DATA_WIDTH - 1:0] rdata_a_o; |
| input wire [4:0] raddr_b_i; |
| output wire [DATA_WIDTH - 1:0] rdata_b_o; |
| input wire [4:0] waddr_a_i; |
| input wire [DATA_WIDTH - 1:0] wdata_a_i; |
| input wire we_a_i; |
| localparam ADDR_WIDTH = (RV32E ? 4 : 5); |
| localparam NUM_WORDS = 2 ** ADDR_WIDTH; |
| wire [(NUM_WORDS * DATA_WIDTH) - 1:0] rf_reg; |
| reg [((NUM_WORDS - 1) >= 1 ? ((NUM_WORDS - 1) * DATA_WIDTH) + (DATA_WIDTH - 1) : ((3 - NUM_WORDS) * DATA_WIDTH) + (((NUM_WORDS - 1) * DATA_WIDTH) - 1)):((NUM_WORDS - 1) >= 1 ? DATA_WIDTH : (NUM_WORDS - 1) * DATA_WIDTH)] rf_reg_tmp; |
| reg [NUM_WORDS - 1:1] we_a_dec; |
| always @(*) begin : we_a_decoder |
| begin : sv2v_autoblock_2 |
| reg signed [31:0] i; |
| for (i = 1; i < NUM_WORDS; i = i + 1) |
| we_a_dec[i] = (waddr_a_i == i ? we_a_i : 1'b0); |
| end |
| end |
| function automatic [DATA_WIDTH - 1:0] sv2v_cast_2E65F; |
| input reg [DATA_WIDTH - 1:0] inp; |
| sv2v_cast_2E65F = inp; |
| endfunction |
| always @(posedge clk or negedge rst_n) |
| if (!rst_n) |
| rf_reg_tmp <= {((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS) {sv2v_cast_2E65F(1'sb0)}}; |
| else begin : sv2v_autoblock_3 |
| reg signed [31:0] r; |
| for (r = 1; r < NUM_WORDS; r = r + 1) |
| if (we_a_dec[r]) |
| rf_reg_tmp[((NUM_WORDS - 1) >= 1 ? r : 1 - (r - (NUM_WORDS - 1))) * DATA_WIDTH+:DATA_WIDTH] <= wdata_a_i; |
| end |
| assign rf_reg[0+:DATA_WIDTH] = {DATA_WIDTH {1'sb0}}; |
| assign rf_reg[DATA_WIDTH * (((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : ((NUM_WORDS - 1) + ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS)) - 1) - (((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS) - 1))+:DATA_WIDTH * ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS)] = rf_reg_tmp[DATA_WIDTH * ((NUM_WORDS - 1) >= 1 ? ((NUM_WORDS - 1) >= 1 ? ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : ((NUM_WORDS - 1) + ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS)) - 1) - (((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS) - 1) : ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : ((NUM_WORDS - 1) + ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS)) - 1)) : 1 - (((NUM_WORDS - 1) >= 1 ? ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : ((NUM_WORDS - 1) + ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS)) - 1) - (((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS) - 1) : ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : ((NUM_WORDS - 1) + ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS)) - 1)) - (NUM_WORDS - 1)))+:DATA_WIDTH * ((NUM_WORDS - 1) >= 1 ? NUM_WORDS - 1 : 3 - NUM_WORDS)]; |
| assign rdata_a_o = rf_reg[raddr_a_i * DATA_WIDTH+:DATA_WIDTH]; |
| assign rdata_b_o = rf_reg[raddr_b_i * DATA_WIDTH+:DATA_WIDTH]; |
| endmodule |