Question

我已经安装了Gem5。我正在尝试进行完整的系统仿真。我添加了M5_PATH

echo "export M5_PATH==/home/sam/security/gem5/full/" >> ~/.bashrc

我将所有系统映像和配置文件放在以下目录中：

  :~/security/gem5/full$ ls
binaries  configs  config-x86.tar.bz2  disks  x86-system.tar.bz2  x86-system.tar.bz2.1

我将SysPaths.py文件中的路径更改为以下内容：

                paths = [ '/dist/m5/system', 'full' ]

并更新了Benchmark.py中的以下行

            return env.get('LINUX_IMAGE', disk('linux-x86.img'))

Gem5已成功编译，我正在运行以下代码：

 ./build/X86/gem5.opt configs/example/fs.py  --disk-image=/home/sam/security/gem5/full/disks/linux-x86.img

但是我收到一个错误，它找不到系统文件的路径。

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "build/X86/python/m5/main.py", line 438, in main
    exec(filecode, scope)
  File "configs/example/fs.py", line 335, in <module>
    test_sys = build_test_system(np)
  File "configs/example/fs.py", line 93, in build_test_system
    cmdline=cmdline)
  File "/home/sam/security/gem5/configs/common/FSConfig.py", line 614, in makeLinuxX86System
    makeX86System(mem_mode, numCPUs, mdesc, self, Ruby)
  File "/home/sam/security/gem5/configs/common/FSConfig.py", line 539, in makeX86System
    disk0.childImage(mdesc.disk())
  File "/home/sam/security/gem5/configs/common/Benchmarks.py", line 59, in disk
    return disk(self.diskname)
  File "/home/sam/security/gem5/configs/common/SysPaths.py", line 63, in __call__
    raise IOError("Can't find a path to system files.")
IOError: Can't find a path to system files.

Answer 1

gem5对某些路径名称有些挑剔，但您无需修补它即可实现不错的图像设置。

例如，带有gem5 e2656006df442a995bf80ee03fa9700d6ec14537的this working setup本质上可以运行：

M5_PATH=/full/path/to/system \
  build/X86/gem5.opt \
  configs/example/fs.py \
  --disk-image /any/path/to/rootfs.ext2 \
  --kernel /any/path/to/vmlinux

和/full/path/to/system包含：

./disks/linux-bigswap2.img
./binaries/x86_64-vmlinux-2.6.22.9

这两个文件都是我用from here生成的假人：

dd if=/dev/zero of=./binaries/linux-bigswap2.img count=1 bs=16k
touch disks/x86_64-vmlinux-2.6.22.9

是的，这是gem5自以为是的图像搜索的一种可怕的解决方法...如果您自己通过--disk-image和--kernel，那么有人应该真正修补gem5而不查找那些图像...

像往常一样，尝试使用打印和PDB对其进行调试：然后应该很容易弄清楚为什么某些东西对您不起作用。

宝石5 IOError：找不到系统文件的路径。完整的系统X86仿真设置

1 个答案: