1import os 2import struct 3import subprocess 4 5import lldb 6from lldbsuite.test.decorators import * 7from lldbsuite.test.lldbtest import * 8from lldbsuite.test import lldbutil 9 10 11class FreeBSDKernelVMCoreTestCase(TestBase): 12 NO_DEBUG_INFO_TESTCASE = True 13 14 mydir = TestBase.compute_mydir(__file__) 15 16 def test_mem(self): 17 kernel_exec = "/boot/kernel/kernel" 18 mem_device = "/dev/mem" 19 20 if not os.access(kernel_exec, os.R_OK): 21 self.skipTest("Kernel @ %s is not readable" % (kernel_exec,)) 22 if not os.access(mem_device, os.R_OK): 23 self.skipTest("Memory @ %s is not readable" % (mem_device,)) 24 25 target = self.dbg.CreateTarget(kernel_exec) 26 process = target.LoadCore(mem_device) 27 hz_value = int(subprocess.check_output(["sysctl", "-n", "kern.hz"])) 28 29 self.assertTrue(process, PROCESS_IS_VALID) 30 self.assertEqual(process.GetNumThreads(), 1) 31 self.assertEqual(process.GetProcessID(), 0) 32 33 # test memory reading 34 self.expect("expr -- *(int *) &hz", 35 substrs=["(int) $0 = %d" % hz_value]) 36 37 main_mod = target.GetModuleAtIndex(0) 38 hz_addr = (main_mod.FindSymbols("hz")[0].symbol.addr 39 .GetLoadAddress(target)) 40 error = lldb.SBError() 41 self.assertEqual(process.ReadMemory(hz_addr, 4, error), 42 struct.pack("<I", hz_value)) 43 44 self.dbg.DeleteTarget(target) 45