7260f6206f
threads, and stack frame down in the lldb_private::Process,
lldb_private::Thread, lldb_private::StackFrameList and the
lldb_private::StackFrame classes. We had some command line
commands that had duplicate versions of the process status
output ("thread list" and "process status" for example).
Removed the "file" command and placed it where it should
have been: "target create". Made an alias for "file" to
"target create" so we stay compatible with GDB commands.
We can now have multple usable targets in lldb at the
same time. This is nice for comparing two runs of a program
or debugging more than one binary at the same time. The
new command is "target select <target-idx>" and also to see
a list of the current targets you can use the new "target list"
command. The flow in a debug session can be:
(lldb) target create /path/to/exe/a.out
(lldb) breakpoint set --name main
(lldb) run
... hit breakpoint
(lldb) target create /bin/ls
(lldb) run /tmp
Process 36001 exited with status = 0 (0x00000000)
(lldb) target list
Current targets:
target #0: /tmp/args/a.out ( arch=x86_64-apple-darwin, platform=localhost, pid=35999, state=stopped )
* target #1: /bin/ls ( arch=x86_64-apple-darwin, platform=localhost, pid=36001, state=exited )
(lldb) target select 0
Current targets:
* target #0: /tmp/args/a.out ( arch=x86_64-apple-darwin, platform=localhost, pid=35999, state=stopped )
target #1: /bin/ls ( arch=x86_64-apple-darwin, platform=localhost, pid=36001, state=exited )
(lldb) bt
* thread #1: tid = 0x2d03, 0x0000000100000b9a a.out`main + 42 at main.c:16, stop reason = breakpoint 1.1
frame #0: 0x0000000100000b9a a.out`main + 42 at main.c:16
frame #1: 0x0000000100000b64 a.out`start + 52
Above we created a target for "a.out" and ran and hit a
breakpoint at "main". Then we created a new target for /bin/ls
and ran it. Then we listed the targest and selected our original
"a.out" program, so we showed two concurent debug sessions
going on at the same time.
llvm-svn: 129695
211 lines
8.0 KiB
Python
211 lines
8.0 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 = "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_image_search_paths(self):
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"""Test image list after moving libd.dylib, and verifies that it works with 'target image-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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# Now let's move the dynamic library to a different directory than $CWD.
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# The directory to relocate the dynamic library to.
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new_dir = os.path.join(os.getcwd(), "dyld_path")
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# This is the function to remove the dyld_path directory after the test.
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def remove_dyld_dir():
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import shutil
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shutil.rmtree(new_dir)
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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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os.mkdir(new_dir)
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os.rename(old_dylib, new_dylib)
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self.addTearDownHook(remove_dyld_dir)
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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("image list",
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substrs = [old_dylib])
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self.runCmd("target image-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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self.addTearDownHook(lambda: self.runCmd("target image-search-paths clear"))
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self.expect("image 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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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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# Now let's move the dynamic library to a different directory than $CWD.
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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(), "dyld_path")
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# This is the function to remove the dyld_path directory after the test.
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def remove_dyld_dir():
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import shutil
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shutil.rmtree(new_dir)
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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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os.mkdir(new_dir)
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os.rename(old_dylib, new_dylib)
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if dsymName:
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os.rename(old_dSYM, new_dSYM)
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self.addTearDownHook(remove_dyld_dir)
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#system(["ls", "-lR", "."])
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# With libd.dylib moved, a.out run should fail.
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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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# Set breakpoint by function name d_function.
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self.expect("breakpoint set -n d_function", BREAKPOINT_CREATED,
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substrs = ["Breakpoint created",
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"name = 'd_function'",
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"locations = 0 (pending)"])
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self.runCmd("run")
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self.expect("process status", "Not expected to hit the d_function breakpoint",
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matching=False,
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substrs = ["stop reason = breakpoint"])
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# Kill the inferior process.
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self.runCmd("process kill")
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# Try again with the DYLD_LIBRARY_PATH environment variable properly set.
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os.environ[dylibPath] = new_dir
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self.addTearDownHook(lambda: os.environ.pop(dylibPath))
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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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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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