forked from OSchip/llvm-project
231 lines
8.9 KiB
Python
231 lines
8.9 KiB
Python
"""
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Test that breakpoint by symbol name works correctly with dynamic libs.
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"""
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import os, time
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import re
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import unittest2
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import lldb
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from lldbtest import *
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class LoadUnloadTestCase(TestBase):
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mydir = os.path.join("functionalities", "load_unload")
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break for main.cpp.
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self.line = line_number('main.c',
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'// Set break point at this line for test_lldb_process_load_and_unload_commands().')
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self.line_d_function = line_number('d.c',
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'// Find this line number within d_dunction().')
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def test_modules_search_paths(self):
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"""Test target modules list after loading a different copy of the library libd.dylib, and verifies that it works with 'target modules search-paths add'."""
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# Invoke the default build rule.
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self.buildDefault()
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if sys.platform.startswith("darwin"):
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dylibName = 'libd.dylib'
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dylibPath = 'DYLD_LIBRARY_PATH'
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# The directory with the dynamic library we did not link to.
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new_dir = os.path.join(os.getcwd(), "hidden")
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old_dylib = os.path.join(os.getcwd(), dylibName)
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new_dylib = os.path.join(new_dir, dylibName)
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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self.expect("target modules list",
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substrs = [old_dylib])
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self.expect("target modules list -t 3",
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patterns = ["%s-[^-]*-[^-]*" % self.getArchitecture()])
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# Add an image search path substitution pair.
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self.runCmd("target modules search-paths add %s %s" % (os.getcwd(), new_dir))
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# Add teardown hook to clear image-search-paths after the test.
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# rdar://problem/10501020
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# Uncomment the following to reproduce 10501020.
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self.addTearDownHook(lambda: self.runCmd("target modules search-paths clear"))
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self.expect("target modules search-paths list",
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substrs = [os.getcwd(), new_dir])
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self.expect("target modules search-paths query %s" % os.getcwd(), "Image search path successfully transformed",
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substrs = [new_dir])
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# Obliterate traces of libd from the old location.
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os.remove(old_dylib)
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# Inform dyld of the new path, too.
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env_cmd_string = "settings set target.env-vars " + dylibPath + "=" + new_dir
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if self.TraceOn():
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print "Set environment to: ", env_cmd_string
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self.runCmd(env_cmd_string)
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self.runCmd("settings show target.env-vars")
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remove_dyld_path_cmd = "settings remove target.env-vars " + dylibPath
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self.addTearDownHook(lambda: self.runCmd(remove_dyld_path_cmd))
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self.runCmd("run")
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self.expect("target modules list", "LLDB successfully locates the relocated dynamic library",
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substrs = [new_dylib])
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def test_dyld_library_path(self):
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"""Test DYLD_LIBRARY_PATH after moving libd.dylib, which defines d_function, somewhere else."""
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# Invoke the default build rule.
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self.buildDefault()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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if sys.platform.startswith("darwin"):
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dylibName = 'libd.dylib'
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dsymName = 'libd.dylib.dSYM'
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dylibPath = 'DYLD_LIBRARY_PATH'
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# The directory to relocate the dynamic library and its debugging info.
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new_dir = os.path.join(os.getcwd(), "hidden")
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old_dylib = os.path.join(os.getcwd(), dylibName)
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new_dylib = os.path.join(new_dir, dylibName)
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old_dSYM = os.path.join(os.getcwd(), dsymName)
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new_dSYM = os.path.join(new_dir, dsymName)
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#system(["ls", "-lR", "."])
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# Try running with the DYLD_LIBRARY_PATH environment variable set, make sure
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# we pick up the hidden dylib.
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env_cmd_string = "settings set target.env-vars " + dylibPath + "=" + new_dir
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if self.TraceOn():
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print "Set environment to: ", env_cmd_string
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self.runCmd(env_cmd_string)
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self.runCmd("settings show target.env-vars")
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remove_dyld_path_cmd = "settings remove target.env-vars " + dylibPath
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self.addTearDownHook(lambda: self.runCmd(remove_dyld_path_cmd))
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self.expect("breakpoint set -f d.c -l %d" % self.line_d_function,
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BREAKPOINT_CREATED,
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startstr = "Breakpoint created: 1: file ='d.c', line = %d" %
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self.line_d_function)
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# For now we don't track DYLD_LIBRARY_PATH, so the old library will be in
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# the modules list.
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self.expect("target modules list",
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substrs = [old_dylib],
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matching=True)
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self.runCmd("run")
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self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
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patterns = ["frame #0.*d_function.*at d.c:%d" % self.line_d_function])
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# After run, make sure the hidden library is present, and the one we didn't
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# load is not.
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self.expect("target modules list",
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substrs = [new_dylib])
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self.expect("target modules list",
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substrs = [old_dylib],
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matching=False)
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def test_lldb_process_load_and_unload_commands(self):
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"""Test that lldb process load/unload command work correctly."""
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# Invoke the default build rule.
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self.buildDefault()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Break at main.c before the call to dlopen().
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# Use lldb's process load command to load the dylib, instead.
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self.expect("breakpoint set -f main.c -l %d" % self.line,
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BREAKPOINT_CREATED,
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startstr = "Breakpoint created: 1: file ='main.c', line = %d" %
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self.line)
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self.runCmd("run", RUN_SUCCEEDED)
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# Make sure that a_function does not exist at this point.
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self.expect("image lookup -n a_function", "a_function should not exist yet",
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error=True, matching=False,
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patterns = ["1 match found .* %s" % self.mydir])
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# Use lldb 'process load' to load the dylib.
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self.expect("process load liba.dylib", "liba.dylib loaded correctly",
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patterns = ['Loading "liba.dylib".*ok',
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'Image [0-9]+ loaded'])
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# Search for and match the "Image ([0-9]+) loaded" pattern.
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output = self.res.GetOutput()
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pattern = re.compile("Image ([0-9]+) loaded")
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for l in output.split(os.linesep):
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#print "l:", l
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match = pattern.search(l)
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if match:
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break
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index = match.group(1)
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# Now we should have an entry for a_function.
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self.expect("image lookup -n a_function", "a_function should now exist",
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patterns = ["1 match found .*%s" % self.mydir])
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# Use lldb 'process unload' to unload the dylib.
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self.expect("process unload %s" % index, "liba.dylib unloaded correctly",
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patterns = ["Unloading .* with index %s.*ok" % index])
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self.runCmd("process continue")
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def test_load_unload(self):
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"""Test breakpoint by name works correctly with dlopen'ing."""
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# Invoke the default build rule.
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self.buildDefault()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Break by function name a_function (not yet loaded).
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self.expect("breakpoint set -n a_function", BREAKPOINT_CREATED,
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startstr = "Breakpoint created: 1: name = 'a_function', locations = 0 (pending)")
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint and at a_function.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ['stopped',
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'a_function',
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'stop reason = breakpoint'])
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# The breakpoint should have a hit count of 1.
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self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
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substrs = [' resolved, hit count = 1'])
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# Issue the 'contnue' command. We should stop agaian at a_function.
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# The stop reason of the thread should be breakpoint and at a_function.
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self.runCmd("continue")
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# rdar://problem/8508987
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# The a_function breakpoint should be encountered twice.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ['stopped',
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'a_function',
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'stop reason = breakpoint'])
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# The breakpoint should have a hit count of 2.
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self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
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substrs = [' resolved, hit count = 2'])
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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