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"""
Test that breakpoint by symbol name works correctly with dynamic libs.
"""
import os, time
import re
import unittest2
import lldb
from lldbtest import *
class LoadUnloadTestCase(TestBase):
mydir = "load_unload"
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break for main.cpp.
self.line = line_number('main.c',
'// Set break point at this line for test_lldb_process_load_and_unload_commands().')
self.line_d_function = line_number('d.c',
'// Find this line number within d_dunction().')
@unittest2.expectedFailure
def test_modules_search_paths(self):
"""Test target modules list after moving libd.dylib, and verifies that it works with 'target modules search-paths add'."""
# Invoke the default build rule.
self.buildDefault()
if sys.platform.startswith("darwin"):
dylibName = 'libd.dylib'
# Now let's move the dynamic library to a different directory than $CWD.
# The directory to relocate the dynamic library to.
new_dir = os.path.join(os.getcwd(), "dyld_path")
# This is the function to remove the dyld_path directory after the test.
def remove_dyld_dir():
import shutil
shutil.rmtree(new_dir)
old_dylib = os.path.join(os.getcwd(), dylibName)
new_dylib = os.path.join(new_dir, dylibName)
os.mkdir(new_dir)
os.rename(old_dylib, new_dylib)
self.addTearDownHook(remove_dyld_dir)
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
self.expect("target modules list",
substrs = [old_dylib])
self.expect("target modules list -t 3",
patterns = ["%s-[^-]*-[^-]*" % self.getArchitecture()])
self.runCmd("target modules search-paths add %s %s" % (os.getcwd(), new_dir))
self.expect("target modules search-paths list",
substrs = [os.getcwd(), new_dir])
# Add teardown hook to clear image-search-paths after the test.
self.addTearDownHook(lambda: self.runCmd("target modules search-paths clear"))
self.expect("target modules list", "LLDB successfully locates the relocated dynamic library",
substrs = [new_dylib])
def test_dyld_library_path(self):
"""Test DYLD_LIBRARY_PATH after moving libd.dylib, which defines d_function, somewhere else."""
# Invoke the default build rule.
self.buildDefault()
if sys.platform.startswith("darwin"):
dylibName = 'libd.dylib'
dsymName = 'libd.dylib.dSYM'
dylibPath = 'DYLD_LIBRARY_PATH'
# Now let's move the dynamic library to a different directory than $CWD.
# The directory to relocate the dynamic library and its debugging info.
new_dir = os.path.join(os.getcwd(), "dyld_path")
# This is the function to remove the dyld_path directory after the test.
def remove_dyld_dir():
import shutil
shutil.rmtree(new_dir)
old_dylib = os.path.join(os.getcwd(), dylibName)
new_dylib = os.path.join(new_dir, dylibName)
old_dSYM = os.path.join(os.getcwd(), dsymName)
new_dSYM = os.path.join(new_dir, dsymName)
#system(["ls", "-lR", "."])
os.mkdir(new_dir)
os.rename(old_dylib, new_dylib)
if dsymName:
os.rename(old_dSYM, new_dSYM)
self.addTearDownHook(remove_dyld_dir)
#system(["ls", "-lR", "."])
# With libd.dylib moved, a.out run should fail.
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Set breakpoint by function name d_function.
self.expect("breakpoint set -n d_function", BREAKPOINT_CREATED,
substrs = ["Breakpoint created",
"name = 'd_function'",
"locations = 0 (pending)"])
self.runCmd("run")
self.expect("process status", "Not expected to hit the d_function breakpoint",
matching=False,
substrs = ["stop reason = breakpoint"])
# Kill the inferior process.
self.runCmd("process kill")
# Try again with the DYLD_LIBRARY_PATH environment variable properly set.
os.environ[dylibPath] = new_dir
self.addTearDownHook(lambda: os.environ.pop(dylibPath))
self.runCmd("run")
self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
patterns = ["frame #0.*d_function.*at d.c:%d" % self.line_d_function])
def test_lldb_process_load_and_unload_commands(self):
"""Test that lldb process load/unload command work correctly."""
# Invoke the default build rule.
self.buildDefault()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Break at main.c before the call to dlopen().
# Use lldb's process load command to load the dylib, instead.
self.expect("breakpoint set -f main.c -l %d" % self.line,
BREAKPOINT_CREATED,
startstr = "Breakpoint created: 1: file ='main.c', line = %d" %
self.line)
self.runCmd("run", RUN_SUCCEEDED)
# Make sure that a_function does not exist at this point.
self.expect("image lookup -n a_function", "a_function should not exist yet",
error=True, matching=False,
patterns = ["1 match found .* %s" % self.mydir])
# Use lldb 'process load' to load the dylib.
self.expect("process load liba.dylib", "liba.dylib loaded correctly",
patterns = ['Loading "liba.dylib".*ok',
'Image [0-9]+ loaded'])
# Search for and match the "Image ([0-9]+) loaded" pattern.
output = self.res.GetOutput()
pattern = re.compile("Image ([0-9]+) loaded")
for l in output.split(os.linesep):
#print "l:", l
match = pattern.search(l)
if match:
break
index = match.group(1)
# Now we should have an entry for a_function.
self.expect("image lookup -n a_function", "a_function should now exist",
patterns = ["1 match found .*%s" % self.mydir])
# Use lldb 'process unload' to unload the dylib.
self.expect("process unload %s" % index, "liba.dylib unloaded correctly",
patterns = ["Unloading .* with index %s.*ok" % index])
self.runCmd("process continue")
def test_load_unload(self):
"""Test breakpoint by name works correctly with dlopen'ing."""
# Invoke the default build rule.
self.buildDefault()
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Break by function name a_function (not yet loaded).
self.expect("breakpoint set -n a_function", BREAKPOINT_CREATED,
startstr = "Breakpoint created: 1: name = 'a_function', locations = 0 (pending)")
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint and at a_function.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'a_function',
'stop reason = breakpoint'])
# The breakpoint should have a hit count of 1.
self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
substrs = [' resolved, hit count = 1'])
# Issue the 'contnue' command. We should stop agaian at a_function.
# The stop reason of the thread should be breakpoint and at a_function.
self.runCmd("continue")
# rdar://problem/8508987
# The a_function breakpoint should be encountered twice.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'a_function',
'stop reason = breakpoint'])
# The breakpoint should have a hit count of 2.
self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
substrs = [' resolved, hit count = 2'])
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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