| """ |
| Test the lldb disassemble command on lib stdc++. |
| """ |
| |
| import os, time |
| import unittest2 |
| import lldb |
| from lldbtest import * |
| |
| class StdCXXDisassembleTestCase(TestBase): |
| |
| mydir = "stl" |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line number to break inside main(). |
| self.line = line_number('main.cpp', '// Set break point at this line.') |
| |
| # rdar://problem/8504895 |
| # Crash while doing 'disassemble -n "-[NSNumber descriptionWithLocale:]" |
| @unittest2.skipIf(TestBase.skipLongRunningTest(), "Skip this long running test") |
| def test_stdcxx_disasm(self): |
| """Do 'disassemble' on each and every 'Code' symbol entry from the std c++ lib.""" |
| self.buildDefault() |
| exe = os.path.join(os.getcwd(), "a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| # rdar://problem/8543077 |
| # test/stl: clang built binaries results in the breakpoint locations = 3, |
| # is this a problem with clang generated debug info? |
| # |
| # Break on line 13 of main.cpp. |
| self.expect("breakpoint set -f main.cpp -l %d" % self.line, |
| BREAKPOINT_CREATED, |
| startstr = "Breakpoint created: 1: file ='main.cpp', line = %d" % |
| self.line) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # Now let's get the target as well as the process objects. |
| target = self.dbg.GetSelectedTarget() |
| process = target.GetProcess() |
| |
| # The process should be in a 'stopped' state. |
| self.expect(repr(process), STOPPED_DUE_TO_BREAKPOINT, exe=False, |
| substrs = ["a.out", |
| "stopped"]) |
| |
| # Disassemble the functions on the call stack. |
| self.runCmd("thread backtrace") |
| thread = process.GetThreadAtIndex(0) |
| depth = thread.GetNumFrames() |
| for i in range(depth - 1): |
| frame = thread.GetFrameAtIndex(i) |
| function = frame.GetFunction() |
| self.runCmd("disassemble -n '%s'" % function.GetName()) |
| |
| # Iterate through the available modules, looking for stdc++ library... |
| for i in range(target.GetNumModules()): |
| module = target.GetModuleAtIndex(i) |
| fs = module.GetFileSpec() |
| if (fs.GetFilename().startswith("libstdc++")): |
| lib_stdcxx = repr(fs) |
| break |
| |
| # At this point, lib_stdcxx is the full path to the stdc++ library and |
| # module is the corresponding SBModule. |
| |
| self.expect(fs.GetFilename(), "Libraray StdC++ is located", exe=False, |
| substrs = ["libstdc++"]) |
| |
| self.runCmd("image dump symtab %s" % repr(fs)) |
| raw_output = self.res.GetOutput() |
| # Now, look for every 'Code' symbol and feed its load address into the |
| # command: 'disassemble -s load_address -e end_address', where the |
| # end_address is taken from the next consecutive 'Code' symbol entry's |
| # load address. |
| # |
| # The load address column comes after the file address column, with both |
| # looks like '0xhhhhhhhh', i.e., 8 hexadecimal digits. |
| codeRE = re.compile(r""" |
| \ Code\ {9} # ' Code' followed by 9 SPCs, |
| 0x[0-9a-f]{16} # the file address column, and |
| \ # a SPC, and |
| (0x[0-9a-f]{16}) # the load address column, and |
| .* # the rest. |
| """, re.VERBOSE) |
| # Maintain a start address variable; if we arrive at a consecutive Code |
| # entry, then the load address of the that entry is fed as the end |
| # address to the 'disassemble -s SA -e LA' command. |
| SA = None |
| for line in raw_output.split(os.linesep): |
| match = codeRE.search(line) |
| if match: |
| LA = match.group(1) |
| print "line:", line |
| print "load address:", LA |
| print "SA:", SA |
| if SA and LA: |
| self.runCmd("disassemble -s %s -e %s" % (SA, LA)) |
| SA = LA |
| else: |
| # This entry is not a Code entry. Reset SA = None. |
| SA = None |
| |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |