文章目录
- 原始代码及log
- UVM测试平台层次结构与Phase执行顺序解析
- 🧩 仿真结果图示
- UVM测试平台层次结构与Phase执行顺序深度解析
- 🧩 仿真结果图示
- 🔍 UVM Phase执行顺序核心原理
- ✅ UVM Phase执行顺序规则
- 🧪 UVM组件层次结构分析
- 📊 Phase执行时间线分析
- 1. build_phase (0ns)
- 2. end_of_elaboration_phase (0ns)
- 3. start_of_simulation_phase (0ns)
- 4. run_phase (关键阶段)
- ✅ UVM Phase执行顺序核心原则
- 1. 构建阶段（build_phase）：自底向上
- 2. 运行阶段（run_phase）：自顶向下
- 3. 结束阶段（extract/check/report_phase）：自底向上
- 🔥 本例的关键发现
- 💡 为什么其他组件的run_phase在500ns前结束？
- ✅ UVM最佳实践总结
- ✅ 正确使用UVM Phase
- ✅ 测试结束协调
- ✅ 组件层次设计
- 💬 与UVM官方文档一致
- ✅ 重要结论
- 追更
- build_phase执行顺序与打印顺序
- ✅ UVM官方文档确认
- ✅ 仿真结果验证
- 仿真日志的打印顺序示例
- UVM测试平台设计规范
- 💬 为什么UVM设计为build_phase自底向上？
原始代码及log
module top;import uvm_pkg::*;//Create a topology// top// | |// u1(A) u2(A)// | | | |// b1(B) d1(D) b1(B) d1(D)//No run phaseclassDextends uvm_component;functionnew(string name,uvm_component parent);super.new(name,parent);endfunction functionvoidbuild_phase(uvm_phase phase);$display("%0t: %0s: build",$time,get_full_name());endfunction functionvoidend_of_elaboration_phase(uvm_phase phase);$display("%0t: %0s: end_of_elaboration",$time,get_full_name());endfunction functionvoidstart_of_simulation_phase(uvm_phase phase);$display("%0t: %0s: start_of_simulation",$time,get_full_name());endfunction functionvoidextract_phase(uvm_phase phase);$display("%0t: %0s: extract",$time,get_full_name());endfunction functionvoidcheck_phase(uvm_phase phase);$display("%0t: %0s: check",$time,get_full_name());endfunction functionvoidreport_phase(uvm_phase phase);$display("%0t: %0s: report",$time,get_full_name());endfunction endclass//Has run phaseclassBextends uvm_component;rand logic[7:0]delay;functionnew(string name,uvm_component parent);super.new(name,parent);endfunction functionvoidbuild_phase(uvm_phase phase);$display("%0t: %0s: build",$time,get_full_name());endfunction functionvoidend_of_elaboration_phase(uvm_phase phase);$display("%0t: %0s: end_of_elaboration",$time,get_full_name());endfunction functionvoidstart_of_simulation_phase(uvm_phase phase);$display("%0t: %0s: start_of_simulation",$time,get_full_name());endfunction functionvoidextract_phase(uvm_phase phase);$display("%0t: %0s: extract",$time,get_full_name());endfunction functionvoidcheck_phase(uvm_phase phase);$display("%0t: %0s: check",$time,get_full_name());endfunction functionvoidreport_phase(uvm_phase phase);$display("%0t: %0s: report",$time,get_full_name());endfunction taskrun_phase(uvm_phase phase);$display("%0t: %0s: start run phase",$time,get_full_name());#delay;$display("%0t: %0s: end run phase",$time,get_full_name(