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tobil |
///////////////////////////////////////////////
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// Random Instruction Code Generator
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// for OR1200 Core
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///////////////////////////////////////////////
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// synopsys translate_off
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`include "timescale.v"
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// synopsys translate_on
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module random_rom_wb ( dat_o, adr_i, sel_i, cyc_i, stb_i, ack_o, clk_i, rst_i);
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parameter adr_width = 26;
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///////////////////////////////
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// IO signals
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output [31:0] dat_o; // wishbone signals
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input [adr_width-1:2] adr_i;
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input [3:0] sel_i;
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input cyc_i;
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input stb_i;
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output ack_o;
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input clk_i; // clock
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input rst_i; // async reset
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///////////////////////////////
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// internal signals
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integer rand;
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parameter memBorder = 24'h000ffe;
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reg lastSet;
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integer i;
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reg [31:0] dat_o;
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reg ack_o;
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always @ (posedge clk_i or posedge rst_i)
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if (rst_i) begin
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ack_o <= 1'b0;
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dat_o <= 32'h0;
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lastSet <= 1'b0;
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end else
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if (!ack_o)
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begin
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if (cyc_i & stb_i) begin
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ack_o <= 1'b1;
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//////////////////////////////////////////////////////////////
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// branch forward by 0000010
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//////////////////////////////////////////////////////////////
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if ( (adr_i < memBorder - 50) &
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(lastSet) ) begin
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rand = ($random() * $random()) % 2;
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if (rand < 0)
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rand = rand * -1;
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if (rand == 0) begin
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dat_o[31:26] <= 6'h04;
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dat_o[25:0] <= 26'h0000010; // l.bf
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$display("l.bf @%x ", adr_i);
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end
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else if (rand == 1) begin
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dat_o[31:26] <= 6'h03;
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dat_o[25:0] <= 26'h0000010; // l.bnf
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$display("l.bnf @%x ", adr_i);
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end
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lastSet <= 1'b0;
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//////////////////////////////////////////////////////////////
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// generate random instruction code
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//////////////////////////////////////////////////////////////
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end else begin
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if (adr_i < memBorder - 50)
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rand = ($random() * $random()) % 51;
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else
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rand = ($random() * $random()) % 31;
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if (rand < 0)
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rand = rand * -1;
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if (rand == 0) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h000; // l.add =0x38h ..0.. 0
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$display("l.add @%x ", adr_i);
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end
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else if (rand == 1) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h001; // l.addc =0x38h ..0.. 1
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$display("l.addc @%x ", adr_i);
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end
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else if (rand == 2) begin
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dat_o[31:26] <= 6'h27; // l.addi =0x27h
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dat_o[25:0] <= $random();
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$display("l.addi @%x ", adr_i);
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end
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else if (rand == 3) begin
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dat_o[31:26] <= 6'h28; // l.addic =0x28h
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dat_o[25:0] <= $random();
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$display("l.addic @%x ", adr_i);
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end
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else if (rand == 4) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h003; // l.and =0x38h ..0.. 3
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$display("l.and @%x ", adr_i);
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end
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else if (rand == 5) begin
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dat_o[31:26] <= 6'h29; // l.andi =0x29h
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dat_o[25:0] <= $random();
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$display("l.andi @%x ", adr_i);
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end
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// l.bf
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// l.buf
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else if (rand == 6) begin
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dat_o[31:26] <= 6'h38; // l.cmov
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dat_o[25:21] <= $random();
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dat_o[20:16] <= $random();
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dat_o[15:11] <= $random();
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dat_o[10:0] <= 11'h00e;
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$display("l.cmov @%x ", adr_i);
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end
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// l.div
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// l.divu
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// l.ext...
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else if (rand == 7) begin
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dat_o[31:26] <= 6'h38; // l.ff1
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dat_o[25:21] <= $random();
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dat_o[20:16] <= $random();
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dat_o[15:11] <= $random();
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dat_o[10:0] <= 11'h00f;
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$display("l.ff1 @%x ", adr_i);
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end
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else if (rand == 8) begin
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dat_o[31:26] <= 6'h38; // l.fl1
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dat_o[25:21] <= $random();
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dat_o[20:16] <= $random();
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dat_o[15:11] <= $random();
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dat_o[10:0] <= 11'h10f;
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$display("l.fl1 @%x ", adr_i);
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end
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// l.trap
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// l.j
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// l.jal
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// l.jalr
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// l.jr
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// l.lbs
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// l.lbz
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// l.lhs
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// l.lhz
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// l.lws
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// l.lwz
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else if (rand == 9) begin
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dat_o[31:26] <= 6'h31; // l.mac
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dat_o[25:21] <= 5'h00;
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dat_o[20:16] <= $random();
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dat_o[15:11] <= $random();
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dat_o[10:0] <= 11'h001;
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$display("l.mac @%x ", adr_i);
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end
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else if (rand == 10) begin
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dat_o[31:26] <= 6'h13; // l.maci
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dat_o[25:21] <= $random();
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dat_o[20:16] <= 5'h00;
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dat_o[15:11] <= $random();
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dat_o[10:0] <= 11'h001;
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$display("l.maci @%x ", adr_i);
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end
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else if (rand == 11) begin
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dat_o[31:26] <= 6'h06; // l.macrc
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dat_o[25:21] <= $random();
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dat_o[20:0] <= 21'h010000;
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$display("l.macrc @%x ", adr_i);
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end
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// l.mfspr
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else if (rand == 12) begin
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dat_o[31:26] <= 6'h06; // l.movhi =0x6h
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dat_o[25:21] <= $random();
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dat_o[20:16] <= 5'h00;
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dat_o[15:0] <= $random();
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$display("l.movhi @%x ", adr_i);
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end
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else if (rand == 13) begin
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dat_o[31:26] <= 6'h31;
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dat_o[25:21] <= 5'h00;
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dat_o[20:11] <= $random();
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dat_o[10:0] <= 11'h002; // l.msb =0x38h ..3.. 6
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$display("l.msb @%x ", adr_i);
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end
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// l.mtspr
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else if (rand == 14) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h306; // l.mul =0x38h ..3.. 6
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$display("l.mul @%x ", adr_i);
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end
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else if (rand == 15) begin
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dat_o[31:26] <= 6'h2c; // l.muli =0x2ch
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dat_o[25:0] <= $random();
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$display("l.muli @%x ", adr_i);
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end
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else if (rand == 16) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h30b; // l.mulu =0x38h ..3.. b
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$display("l.add @%x ", adr_i);
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end
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// else if (rand == 8) begin
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// dat_o[31:26] <= 6'h15; // l.nop =0x15h
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// dat_o[25:0] <= 26'h000_0000;
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// end
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else if (rand == 17) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h004; // l.or =0x38h ..0.. 4
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$display("l.or @%x ", adr_i);
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end
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else if (rand == 18) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h004; // l.or =0x38h ..0.. 4
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$display("l.or @%x ", adr_i);
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end
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else if (rand == 19) begin
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dat_o[31:26] <= 6'h2a; // l.ori =0x2ah
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dat_o[25:0] <= 26'h000_0000;
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$display("l.ori @%x ", adr_i);
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end
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// l.rfe
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else if (rand == 20) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h0c8; // l.ror
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$display("l.ror @%x ", adr_i);
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end
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else if (rand == 21) begin
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dat_o[31:26] <= 6'h2e;
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dat_o[25:16] <= $random();
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dat_o[15:6] <= 10'h003; // l.rori =0x2eh ..3..
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dat_o[5:0] <= $random();
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$display("l.rori @%x ", adr_i);
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end
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| 241 |
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// l.sb
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// l.sd
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// l.sh
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else if (rand == 22) begin
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dat_o[31:26] <= 6'h38;
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dat_o[25:11] <= $random();
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dat_o[10:0] <= 11'h008; // l.sll =0x38h ..0.. 8
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$display("l.sll @%x ", adr_i);
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| 249 |
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end
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| 250 |
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else if (rand == 23) begin
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dat_o[31:26] <= 6'h2e;
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dat_o[25:8] <= $random();
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dat_o[7:6] <= 2'h0; // l.slli =0x2eh ..0..
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| 254 |
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dat_o[5:0] <= $random();
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| 255 |
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$display("l.slli @%x ", adr_i);
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| 256 |
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end
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| 257 |
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else if (rand == 24) begin
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| 258 |
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dat_o[31:26] <= 6'h38;
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| 259 |
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dat_o[25:11] <= $random();
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| 260 |
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dat_o[10:0] <= 11'h088; // l.sra =0x38h ..2. 8
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| 261 |
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$display("l.sra @%x ", adr_i);
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| 262 |
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end
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| 263 |
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else if (rand == 25) begin
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| 264 |
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dat_o[31:26] <= 6'h2e;
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| 265 |
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dat_o[25:8] <= $random();
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| 266 |
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dat_o[7:6] <= 2'h2; // l.srai =0x2eh ..2..
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| 267 |
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dat_o[5:0] <= $random();
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| 268 |
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$display("l.srai @%x ", adr_i);
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| 269 |
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end
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| 270 |
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else if (rand == 26) begin
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| 271 |
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dat_o[31:26] <= 6'h38;
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| 272 |
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dat_o[25:11] <= $random();
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| 273 |
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dat_o[10:0] <= 11'h048; // l.srl =0x38h ..1.. 8
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| 274 |
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$display("l.srl @%x ", adr_i);
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| 275 |
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end
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| 276 |
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else if (rand == 27) begin
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| 277 |
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dat_o[31:26] <= 6'h2e;
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| 278 |
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dat_o[25:8] <= $random();
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| 279 |
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dat_o[7:6] <= 2'h1; // l.srli =0x2eh ..1..
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| 280 |
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dat_o[5:0] <= $random();
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| 281 |
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$display("l.srli @%x ", adr_i);
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| 282 |
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end
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| 283 |
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else if (rand == 28) begin
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| 284 |
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dat_o[31:26] <= 6'h38;
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| 285 |
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dat_o[25:11] <= $random();
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| 286 |
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dat_o[10:0] <= 11'h002; // l.sub =0x38h ..0.. 2
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| 287 |
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$display("l.sub @%x ", adr_i);
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| 288 |
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end
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| 289 |
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// l.sw
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| 290 |
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// l.sys
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| 291 |
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else if (rand == 29) begin
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| 292 |
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dat_o[31:26] <= 6'h38;
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| 293 |
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dat_o[25:11] <= $random();
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| 294 |
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dat_o[10:0] <= 11'h005; // l.xor =0x38h ..0.. 5
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| 295 |
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$display("l.xor @%x ", adr_i);
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| 296 |
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end
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| 297 |
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else if (rand == 30) begin
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| 298 |
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dat_o[31:26] <= 6'h2b; // l.xori =0x2bh
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| 299 |
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dat_o[25:0] <= 26'h000_0000;
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| 300 |
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$display("l.xori @%x ", adr_i);
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| 301 |
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end
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| 302 |
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/////////////////////////
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| 303 |
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// Set Flag Section
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| 304 |
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/////////////////////////
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| 305 |
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// l.sfeq
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| 306 |
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else if (rand == 31) begin
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| 307 |
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dat_o[31:21] <= 11'h720;
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| 308 |
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dat_o[20:11] <= $random();
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| 309 |
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dat_o[10:0] <= 11'h000;
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| 310 |
|
|
$display("l.sfeq @%x ", adr_i);
|
| 311 |
|
|
lastSet <= 1'b1;
|
| 312 |
|
|
end
|
| 313 |
|
|
|
| 314 |
|
|
// l.sfeqi
|
| 315 |
|
|
else if (rand == 32) begin
|
| 316 |
|
|
dat_o[31:21] <= 11'h5e0;
|
| 317 |
|
|
dat_o[20:0] <= $random();
|
| 318 |
|
|
$display("l.sfeqi @%x ", adr_i);
|
| 319 |
|
|
lastSet <= 1'b1;
|
| 320 |
|
|
end
|
| 321 |
|
|
// l.sfges
|
| 322 |
|
|
else if (rand == 33) begin
|
| 323 |
|
|
dat_o[31:21] <= 11'h72b;
|
| 324 |
|
|
dat_o[20:11] <= $random();
|
| 325 |
|
|
dat_o[10:0] <= 11'h000;
|
| 326 |
|
|
$display("l.sfges @%x ", adr_i);
|
| 327 |
|
|
lastSet <= 1'b1;
|
| 328 |
|
|
end
|
| 329 |
|
|
// l.sfgesi
|
| 330 |
|
|
else if (rand == 34) begin
|
| 331 |
|
|
dat_o[31:21] <= 11'h5eb;
|
| 332 |
|
|
dat_o[20:0] <= $random();
|
| 333 |
|
|
$display("l.sfgesi @%x ", adr_i);
|
| 334 |
|
|
lastSet <= 1'b1;
|
| 335 |
|
|
end
|
| 336 |
|
|
// l.sfgeu
|
| 337 |
|
|
else if (rand == 35) begin
|
| 338 |
|
|
dat_o[31:21] <= 11'h723;
|
| 339 |
|
|
dat_o[20:11] <= $random();
|
| 340 |
|
|
dat_o[10:0] <= 11'h000;
|
| 341 |
|
|
$display("l.sfgeu @%x ", adr_i);
|
| 342 |
|
|
lastSet <= 1'b1;
|
| 343 |
|
|
end
|
| 344 |
|
|
// l.sfgeui
|
| 345 |
|
|
else if (rand == 36) begin
|
| 346 |
|
|
dat_o[31:21] <= 11'h5e3;
|
| 347 |
|
|
dat_o[20:0] <= $random();
|
| 348 |
|
|
$display("l.sfgeui @%x ", adr_i);
|
| 349 |
|
|
lastSet <= 1'b1;
|
| 350 |
|
|
end
|
| 351 |
|
|
// l.sfgts
|
| 352 |
|
|
else if (rand == 37) begin
|
| 353 |
|
|
dat_o[31:21] <= 11'h72a;
|
| 354 |
|
|
dat_o[20:11] <= $random();
|
| 355 |
|
|
dat_o[10:0] <= 11'h000;
|
| 356 |
|
|
$display("l.sfgts @%x ", adr_i);
|
| 357 |
|
|
lastSet <= 1'b1;
|
| 358 |
|
|
end
|
| 359 |
|
|
// l.sfgtsi
|
| 360 |
|
|
else if (rand == 38) begin
|
| 361 |
|
|
dat_o[31:21] <= 11'h5ea;
|
| 362 |
|
|
dat_o[20:0] <= $random();
|
| 363 |
|
|
$display("l.sfgtsi @%x ", adr_i);
|
| 364 |
|
|
lastSet <= 1'b1;
|
| 365 |
|
|
end
|
| 366 |
|
|
// l.sfgtu
|
| 367 |
|
|
else if (rand == 39) begin
|
| 368 |
|
|
dat_o[31:21] <= 11'h722;
|
| 369 |
|
|
dat_o[20:11] <= $random();
|
| 370 |
|
|
dat_o[10:0] <= 11'h000;
|
| 371 |
|
|
$display("l.sfgtu @%x ", adr_i);
|
| 372 |
|
|
lastSet <= 1'b1;
|
| 373 |
|
|
end
|
| 374 |
|
|
// l.sfgtui
|
| 375 |
|
|
else if (rand == 40) begin
|
| 376 |
|
|
dat_o[31:21] <= 11'h5e2;
|
| 377 |
|
|
dat_o[20:0] <= $random();
|
| 378 |
|
|
$display("l.sfgtui @%x ", adr_i);
|
| 379 |
|
|
lastSet <= 1'b1;
|
| 380 |
|
|
end
|
| 381 |
|
|
// l.sfles
|
| 382 |
|
|
else if (rand == 41) begin
|
| 383 |
|
|
dat_o[31:21] <= 11'h72d;
|
| 384 |
|
|
dat_o[20:11] <= $random();
|
| 385 |
|
|
dat_o[10:0] <= 11'h000;
|
| 386 |
|
|
$display("l.sfles @%x ", adr_i);
|
| 387 |
|
|
lastSet <= 1'b1;
|
| 388 |
|
|
end
|
| 389 |
|
|
// l.sflesi
|
| 390 |
|
|
else if (rand == 42) begin
|
| 391 |
|
|
dat_o[31:21] <= 11'h5ed;
|
| 392 |
|
|
dat_o[20:0] <= $random();
|
| 393 |
|
|
$display("l.sflesi @%x ", adr_i);
|
| 394 |
|
|
lastSet <= 1'b1;
|
| 395 |
|
|
end
|
| 396 |
|
|
// l.sfleu
|
| 397 |
|
|
else if (rand == 43) begin
|
| 398 |
|
|
dat_o[31:21] <= 11'h725;
|
| 399 |
|
|
dat_o[20:11] <= $random();
|
| 400 |
|
|
dat_o[10:0] <= 11'h000;
|
| 401 |
|
|
$display("l.sfleu @%x ", adr_i);
|
| 402 |
|
|
lastSet <= 1'b1;
|
| 403 |
|
|
end
|
| 404 |
|
|
// l.sfleui
|
| 405 |
|
|
else if (rand == 44) begin
|
| 406 |
|
|
dat_o[31:21] <= 11'h5e5;
|
| 407 |
|
|
dat_o[20:0] <= $random();
|
| 408 |
|
|
$display("l.sfleui @%x ", adr_i);
|
| 409 |
|
|
lastSet <= 1'b1;
|
| 410 |
|
|
end
|
| 411 |
|
|
// l.sflts
|
| 412 |
|
|
else if (rand == 45) begin
|
| 413 |
|
|
dat_o[31:21] <= 11'h72c;
|
| 414 |
|
|
dat_o[20:11] <= $random();
|
| 415 |
|
|
dat_o[10:0] <= 11'h000;
|
| 416 |
|
|
$display("l.sflts @%x ", adr_i);
|
| 417 |
|
|
lastSet <= 1'b1;
|
| 418 |
|
|
end
|
| 419 |
|
|
// l.sfltsi
|
| 420 |
|
|
else if (rand == 46) begin
|
| 421 |
|
|
dat_o[31:21] <= 11'h5ec;
|
| 422 |
|
|
dat_o[20:0] <= $random();
|
| 423 |
|
|
$display("l.sfltsi @%x ", adr_i);
|
| 424 |
|
|
lastSet <= 1'b1;
|
| 425 |
|
|
end
|
| 426 |
|
|
// l.sfltu
|
| 427 |
|
|
else if (rand == 47) begin
|
| 428 |
|
|
dat_o[31:21] <= 11'h724;
|
| 429 |
|
|
dat_o[20:11] <= $random();
|
| 430 |
|
|
dat_o[10:0] <= 11'h000;
|
| 431 |
|
|
$display("l.sfltu @%x ", adr_i);
|
| 432 |
|
|
lastSet <= 1'b1;
|
| 433 |
|
|
end
|
| 434 |
|
|
// l.sfltui
|
| 435 |
|
|
else if (rand == 48) begin
|
| 436 |
|
|
dat_o[31:21] <= 11'h5e4;
|
| 437 |
|
|
dat_o[20:0] <= $random();
|
| 438 |
|
|
$display("l.sfltui @%x ", adr_i);
|
| 439 |
|
|
lastSet <= 1'b1;
|
| 440 |
|
|
end
|
| 441 |
|
|
// l.sfne
|
| 442 |
|
|
else if (rand == 49) begin
|
| 443 |
|
|
dat_o[31:21] <= 11'h721;
|
| 444 |
|
|
dat_o[20:11] <= $random();
|
| 445 |
|
|
dat_o[10:0] <= 11'h000;
|
| 446 |
|
|
$display("l.sfltu @%x ", adr_i);
|
| 447 |
|
|
lastSet <= 1'b1;
|
| 448 |
|
|
end
|
| 449 |
|
|
// l.sfnei
|
| 450 |
|
|
else if (rand == 50) begin
|
| 451 |
|
|
dat_o[31:21] <= 11'h5e1;
|
| 452 |
|
|
dat_o[20:0] <= $random();
|
| 453 |
|
|
$display("l.sfnei @%x ", adr_i);
|
| 454 |
|
|
lastSet <= 1'b1;
|
| 455 |
|
|
end
|
| 456 |
|
|
end
|
| 457 |
|
|
//////////////////////////////////////////////////////////////
|
| 458 |
|
|
// if memBorder reached, jmp register r0
|
| 459 |
|
|
// finish up pipeline stage
|
| 460 |
|
|
//////////////////////////////////////////////////////////////
|
| 461 |
|
|
if (adr_i == memBorder - 4) begin
|
| 462 |
|
|
dat_o <= {6'h15, 5'h00, 5'h00, 16'h0000}; //32'h15000000; // nop
|
| 463 |
|
|
$display("@%x %x c", adr_i, dat_o);
|
| 464 |
|
|
end
|
| 465 |
|
|
if (adr_i == memBorder - 3) begin
|
| 466 |
|
|
dat_o <= {6'h15, 5'h00, 5'h00, 16'h0000}; //32'h15000000; // nop
|
| 467 |
|
|
$display("@%x %x c", adr_i, dat_o);
|
| 468 |
|
|
end
|
| 469 |
|
|
if (adr_i == memBorder - 2) begin
|
| 470 |
|
|
dat_o <= {6'h11, 26'h0000000}; //jmp register 0
|
| 471 |
|
|
$display("@%x %x d", adr_i, dat_o);
|
| 472 |
|
|
end
|
| 473 |
|
|
if (adr_i == memBorder - 1) begin
|
| 474 |
|
|
dat_o <= {6'h15, 5'h00, 5'h00, 16'h0000}; //32'h15000000; // nop
|
| 475 |
|
|
$display("@%x %x e", adr_i, dat_o);
|
| 476 |
|
|
end
|
| 477 |
|
|
if (adr_i == memBorder) begin
|
| 478 |
|
|
dat_o <= {6'h15, 5'h00, 5'h00, 16'h0000}; //32'h15000000; // nop
|
| 479 |
|
|
$display("@%x %x g", adr_i, dat_o);
|
| 480 |
|
|
end
|
| 481 |
|
|
end
|
| 482 |
|
|
end
|
| 483 |
|
|
else
|
| 484 |
|
|
ack_o <= 1'b0;
|
| 485 |
|
|
|
| 486 |
|
|
|
| 487 |
|
|
endmodule
|
| 488 |
|
|
|
| 489 |
|
|
|
