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This patch is the result of a discussion on lldb-dev, see http://lists.llvm.org/pipermail/lldb-dev/2018-January/013111.html for background. For each test (should be eventually: each test configuration) a separate build directory is created and we execute make VPATH=$srcdir/path/to/test -C $builddir/path/to/test -f $srcdir/path/to/test/Makefile -I $srcdir/path/to/test In order to make this work all LLDB tests need to be updated to find the executable in the test build directory, since CWD still points at the test's source directory, which is a requirement for unittest2. Although we have done extensive testing, I'm expecting that this first attempt will break a few bots. Please DO NOT HESITATE TO REVERT this patch in order to get the bots green again. We will likely have to iterate on this some more. Differential Revision: https://reviews.llvm.org/D42281 llvm-svn: 323803
173 lines
6.7 KiB
Python
173 lines
6.7 KiB
Python
"""Test aspects of lldb commands on universal binaries."""
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from __future__ import print_function
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import unittest2
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import os
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import time
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class UniversalTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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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 inside main().
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self.line = line_number('main.c', '// Set break point at this line.')
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@add_test_categories(['pyapi'])
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@skipUnlessDarwin
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@unittest2.skipUnless(hasattr(os, "uname") and os.uname()[4] in [
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'i386', 'x86_64'], "requires i386 or x86_64")
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@skipIfDarwinEmbedded # this test file assumes we're targetting an x86 system
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def test_sbdebugger_create_target_with_file_and_target_triple(self):
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"""Test the SBDebugger.CreateTargetWithFileAndTargetTriple() API."""
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# Invoke the default build rule.
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self.build()
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# Note that "testit" is a universal binary.
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exe = self.getBuildArtifact("testit")
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# Create a target by the debugger.
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target = self.dbg.CreateTargetWithFileAndTargetTriple(
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exe, "i386-apple-macosx")
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self.assertTrue(target, VALID_TARGET)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple(
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None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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@skipUnlessDarwin
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@unittest2.skipUnless(hasattr(os, "uname") and os.uname()[4] in [
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'i386', 'x86_64'], "requires i386 or x86_64")
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@skipIfDarwinEmbedded # this test file assumes we're targetting an x86 system
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def test_process_launch_for_universal(self):
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"""Test process launch of a universal binary."""
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from lldbsuite.test.lldbutil import print_registers
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# Invoke the default build rule.
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self.build()
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# Note that "testit" is a universal binary.
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exe = self.getBuildArtifact("testit")
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# By default, x86_64 is assumed if no architecture is specified.
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self.expect("file " + exe, CURRENT_EXECUTABLE_SET,
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startstr="Current executable set to ",
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substrs=["testit' (x86_64)."])
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# Break inside the main.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
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# We should be able to launch the x86_64 executable.
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self.runCmd("run", RUN_SUCCEEDED)
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# Check whether we have a 64-bit process launched.
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target = self.dbg.GetSelectedTarget()
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process = target.GetProcess()
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self.assertTrue(target and process and
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self.invoke(process, 'GetAddressByteSize') == 8,
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"64-bit process launched")
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frame = process.GetThreadAtIndex(0).GetFrameAtIndex(0)
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registers = print_registers(frame, string_buffer=True)
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self.expect(registers, exe=False,
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substrs=['Name: rax'])
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self.runCmd("continue")
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# Now specify i386 as the architecture for "testit".
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self.expect("file -a i386 " + exe, CURRENT_EXECUTABLE_SET,
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startstr="Current executable set to ",
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substrs=["testit' (i386)."])
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# Break inside the main.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
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# We should be able to launch the i386 executable as well.
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self.runCmd("run", RUN_SUCCEEDED)
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# Check whether we have a 32-bit process launched.
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target = self.dbg.GetSelectedTarget()
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process = target.GetProcess()
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self.assertTrue(target and process,
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"32-bit process launched")
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pointerSize = self.invoke(process, 'GetAddressByteSize')
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self.assertTrue(
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pointerSize == 4,
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"AddressByteSize of 32-bit process should be 4, got %d instead." %
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pointerSize)
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frame = process.GetThreadAtIndex(0).GetFrameAtIndex(0)
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registers = print_registers(frame, string_buffer=True)
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self.expect(registers, exe=False,
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substrs=['Name: eax'])
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self.runCmd("continue")
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@skipUnlessDarwin
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@unittest2.skipUnless(hasattr(os, "uname") and os.uname()[4] in [
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'i386', 'x86_64'], "requires i386 or x86_64")
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@skipIfDarwinEmbedded # this test file assumes we're targetting an x86 system
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def test_process_attach_with_wrong_arch(self):
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"""Test that when we attach to a binary from the wrong fork of a universal binary, we fix up the ABI correctly."""
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# Now keep the architecture at 32 bit, but switch the binary we launch to
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# 64 bit, and make sure on attach we switch to the correct
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# architecture.
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# Invoke the default build rule.
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self.build()
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# Note that "testit" is a universal binary.
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exe = self.getBuildArtifact("testit")
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# Create a target by the debugger.
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target = self.dbg.CreateTargetWithFileAndTargetTriple(
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exe, "i386-apple-macosx")
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self.assertTrue(target, VALID_TARGET)
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pointer_size = target.GetAddressByteSize()
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self.assertTrue(pointer_size == 4, "Initially we were 32 bit.")
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bkpt = target.BreakpointCreateBySourceRegex(
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"sleep", lldb.SBFileSpec("main.c"))
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self.assertTrue(bkpt.IsValid(), "Valid breakpoint")
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self.assertTrue(
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bkpt.GetNumLocations() >= 1,
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"Our main breakpoint has locations.")
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popen = self.spawnSubprocess(exe, ["keep_waiting"])
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self.addTearDownHook(self.cleanupSubprocesses)
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error = lldb.SBError()
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empty_listener = lldb.SBListener()
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process = target.AttachToProcessWithID(
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empty_listener, popen.pid, error)
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self.assertTrue(error.Success(), "Attached to process.")
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pointer_size = target.GetAddressByteSize()
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self.assertTrue(pointer_size == 8, "We switched to 64 bit.")
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# It may seem odd that I am checking the number of frames, but the bug that
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# motivated this test was that we eventually fixed the architecture, but we
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# left the ABI set to the original value. In that case, if you asked the
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# process for its architecture, it would look right, but since the ABI was
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# wrong, backtracing failed.
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threads = lldbutil.continue_to_breakpoint(process, bkpt)
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self.assertTrue(len(threads) == 1)
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thread = threads[0]
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self.assertTrue(
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thread.GetNumFrames() > 1,
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"We were able to backtrace.")
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