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    寄存器复位检查的字段与层级遍历

    环境：VCS W-2024.09-SP2-8。1.2 使用 uvm-1.2，2.0 使用 uvm-ieee-2020-2.0。

    实验检查观察值是否符合预期；成功复现问题不代表问题已修复。

    结果对比

    观察内容 UVM 1.2 UVM 2.0
    叶寄存器 mirror 调用次数 leaf_mirror_calls 2 1
    mirror 时无复位字段未被检查（1=是） no_reset_unchecked_during_mirror 0 1
    字段比较开关已恢复为 UVM_CHECK（1=是） compare_restored 1 1

    运行命令

    目录与环境准备；从解包根目录执行：

    1
    uv run tools/run_uvm_review.py --case reset_sequence_probe --variants 12,20

    最小源码

    reset_sequence_probe.sv

    reset_sequence_probe.sv 
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    `timescale 1ns/1ps
`include "uvm_macros.svh"
import uvm_pkg::*;

class reset_probe_reg extends uvm_reg;
  uvm_reg_field reset_field, no_reset_field;
  int mirror_calls;
  bit unchecked_no_reset;
  function new(string name="reg"); super.new(name,32,UVM_NO_COVERAGE); endfunction
  function void build(uvm_reg_block parent);
    configure(parent);
    reset_field = new("reset_field"); no_reset_field = new("no_reset_field");
    reset_field.configure(this,16,0,"RW",0,0,1,1,0);
    no_reset_field.configure(this,16,16,"RW",0,0,0,1,0);
  endfunction
  virtual task mirror(output uvm_status_e status, input uvm_check_e check=UVM_NO_CHECK,
`ifdef REVIEW_UVM20
      input uvm_door_e path=UVM_DEFAULT_DOOR,
`else
      input uvm_path_e path=UVM_DEFAULT_PATH,
`endif
      input uvm_reg_map map=null, input uvm_sequence_base parent=null,
      input int prior=-1, input uvm_object extension=null, input string fname="", input int lineno=0);
    mirror_calls++;
    unchecked_no_reset = no_reset_field.get_compare() == UVM_NO_CHECK;
    status = UVM_IS_OK;
  endtask
endclass
class reset_probe_block extends uvm_reg_block;
  function new(string name="block"); super.new(name,UVM_NO_COVERAGE); endfunction
endclass
module reset_sequence_probe;
  initial begin
    reset_probe_block root_value = new("root_value"), child_value = new("child_value"), leaf_value = new("leaf_value");
    reset_probe_reg register_value = new();
    uvm_reg_hw_reset_seq sequence_value = new();
    uvm_reg_map map;
    child_value.configure(root_value);
    leaf_value.configure(child_value);
    register_value.build(leaf_value);
    map = leaf_value.create_map("map",0,4,UVM_LITTLE_ENDIAN);
    map.add_reg(register_value,0);
    root_value.lock_model();
    sequence_value.model = root_value;
    sequence_value.start(null);
    $display("REVIEW|leaf_mirror_calls|%0d", register_value.mirror_calls);
    $display("REVIEW|no_reset_unchecked_during_mirror|%0d", register_value.unchecked_no_reset);
    $display("REVIEW|compare_restored|%0d", register_value.no_reset_field.get_compare() == UVM_CHECK);
    $display("REVIEW|done|1");
    $finish;
  end
endmodule

    全部用例 · 证据摘要

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