Project Full coverage report
Current view: Cores-VeeR-EL2—Cores-VeeR-EL2—design—lib—el2_lib.sv Coverage Hit Total
Test Date: 08-11-2024 Toggle 100.0% 7 7
Test: all Branch 0.0% 0 0

            Line data    Source code
       1              : module el2_btb_tag_hash
       2              : import el2_pkg::*;
       3              : #(
       4              : `include "el2_param.vh"
       5              :  ) (
       6           26 :                        input logic [pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE:pt.BTB_ADDR_HI+1] pc,
       7       741091 :                        output logic [pt.BTB_BTAG_SIZE-1:0] hash
       8              :                        );
       9              : 
      10              :     assign hash = {(pc[pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE:pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE+1] ^
      11              :                    pc[pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE:pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+1] ^
      12              :                    pc[pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE:pt.BTB_ADDR_HI+1])};
      13              : endmodule
      14              : 
      15              : module el2_btb_tag_hash_fold
      16              : import el2_pkg::*;
      17              : #(
      18              : `include "el2_param.vh"
      19              :  )(
      20              :                        input logic [pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE:pt.BTB_ADDR_HI+1] pc,
      21              :                        output logic [pt.BTB_BTAG_SIZE-1:0] hash
      22              :                        );
      23              : 
      24              :     assign hash = {(
      25              :                    pc[pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+pt.BTB_BTAG_SIZE:pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE+1] ^
      26              :                    pc[pt.BTB_ADDR_HI+pt.BTB_BTAG_SIZE:pt.BTB_ADDR_HI+1])};
      27              : 
      28              : endmodule
      29              : 
      30              : module el2_btb_addr_hash
      31              : import el2_pkg::*;
      32              : #(
      33              : `include "el2_param.vh"
      34              :  )(
      35      3402700 :                         input logic [pt.BTB_INDEX3_HI:pt.BTB_INDEX1_LO] pc,
      36      3518316 :                         output logic [pt.BTB_ADDR_HI:pt.BTB_ADDR_LO] hash
      37              :                         );
      38              : 
      39              : 
      40              : if(pt.BTB_FOLD2_INDEX_HASH) begin : fold2
      41              :    assign hash[pt.BTB_ADDR_HI:pt.BTB_ADDR_LO] = pc[pt.BTB_INDEX1_HI:pt.BTB_INDEX1_LO] ^
      42              :                                                 pc[pt.BTB_INDEX3_HI:pt.BTB_INDEX3_LO];
      43              : end
      44              :    else begin
      45              :    assign hash[pt.BTB_ADDR_HI:pt.BTB_ADDR_LO] = pc[pt.BTB_INDEX1_HI:pt.BTB_INDEX1_LO] ^
      46              :                                                 pc[pt.BTB_INDEX2_HI:pt.BTB_INDEX2_LO] ^
      47              :                                                 pc[pt.BTB_INDEX3_HI:pt.BTB_INDEX3_LO];
      48              : end
      49              : 
      50              : endmodule
      51              : 
      52              : module el2_btb_ghr_hash
      53              : import el2_pkg::*;
      54              : #(
      55              : `include "el2_param.vh"
      56              :  )(
      57       983832 :                        input logic [pt.BTB_ADDR_HI:pt.BTB_ADDR_LO] hashin,
      58      1449628 :                        input logic [pt.BHT_GHR_SIZE-1:0] ghr,
      59      1944698 :                        output logic [pt.BHT_ADDR_HI:pt.BHT_ADDR_LO] hash
      60              :                        );
      61              : 
      62              :    // The hash function is too complex to write in verilog for all cases.
      63              :    // The config script generates the logic string based on the bp config.
      64              :    if(pt.BHT_GHR_HASH_1) begin : ghrhash_cfg1
      65              :      assign hash[pt.BHT_ADDR_HI:pt.BHT_ADDR_LO] = { ghr[pt.BHT_GHR_SIZE-1:pt.BTB_INDEX1_HI-1], hashin[pt.BTB_INDEX1_HI:2]^ghr[pt.BTB_INDEX1_HI-2:0]};
      66              :    end
      67              :    else begin : ghrhash_cfg2
      68              :      assign hash[pt.BHT_ADDR_HI:pt.BHT_ADDR_LO] = { hashin[pt.BHT_GHR_SIZE+1:2]^ghr[pt.BHT_GHR_SIZE-1:0]};
      69              :    end
      70              : 
      71              : 
      72              : endmodule