Comments (7)
2023 年 8 月 24 日@第三届 RISC -V **峰会 内公布内容,香山当前流程支持 " CPU 的覆盖率导向模糊测试" 相关内容
结合当前difftest 提交版本 master 分支内 scripts/coverage
相关脚本分析,主要支持功能:
- 依verilator 识别规则对verilog 文件进行预处理 以 统计需要范围内的覆盖情况
- 获取代码覆盖结果数据
问题:
- 有没有更多的关于覆盖率导向模糊测试的 流程说明 或者使用说明;
- 在哪儿可以看到 峰会提到的 覆盖率收集闭环流程: 收集--算法推导分析代码覆盖率--测试激励再输入--协同仿真 的流程迭代。
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Please refer to https://github.com/OpenXiangShan/xfuzz
from difftest.
好的 感谢!
from difftest.
Please refer to https://github.com/OpenXiangShan/xfuzz
关于这个仓库有没有更详细一点的使用说明
from difftest.
Please refer to https://github.com/OpenXiangShan/xfuzz
关于这个仓库有没有更详细一点的使用说明
目前没有了。这个仓库的所有命令都已经列在README里面了
from difftest.
Please refer to https://github.com/OpenXiangShan/xfuzz
关于这个仓库有没有更详细一点的使用说明
目前没有了。这个仓库的所有命令都已经列在README里面了
比如readme 内提到的 集成design内 提到的几点
- it could be passed to Verilator as an external library for linking. //如何配置link至verilator
- The required interfaces between Rust and C/C++ modules are listed exclusively at [the harness file] (https://github.com/OpenXiangShan/xfuzz/blob/main/src/harness.rs). //这些接口是和difftest内交互用的吗?
- have upgraded the DiffTest environment to support these interfaces. //如何配置同difftest交互
- Please refer to the DiffTest README.md for connecting your CPU design with the fuzzer. //difftest 支持生成verilog相关接口命令”make difftest_verilog NOOP_HOME=$(pwd)“ , 如何同xfuzz进行连接?
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可以参考 CI 流程中的 Difftest with Coverage-Guided Fuzzer 部分:https://github.com/OpenXiangShan/difftest/blob/master/.github/workflows/main.yml
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Related Issues (20)
- Snapshot timestamp t not updated in while loop for simulation HOT 2
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- When using Spike as REF, it fails to correctly synchronize the DUT's state during exceptions HOT 2
- AbstractRefProxy 声明了与reference model 不相同的函数原型 HOT 3
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- Difftest环境移植问题 HOT 2
- move指令消除问题 HOT 4
- How can the Rocket example provided by Difftest support extended instructions? HOT 8
- Rocket-chip difftest框架使用 HOT 1
- Links for Difftest docs HOT 1
- clock/timescale and reset in the generated waveform HOT 2
- Proposal to remove ssh remote on verilator.mk HOT 2
- Integrating VIP into DiffTest HOT 4
- sync/async read of ram HOT 1
- Difftest::Difftest内部没有完成对包括difftest_core_state_t dut在内的对象的初始化 HOT 1
- RefProxy void (*memcpy)的调用传参错误 HOT 1
- Difftest::step()中实际上没有完成比较,proxy->regcpy(ref_regs_ptr, REF_TO_DUT)将NEMU的reg val全部copy到DUT,二者永远相等 HOT 1
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