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Trying to deal with Linux AArch64 test failures :/
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import os | ||
import shutil | ||
import tempfile | ||
import struct | ||
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import lldb | ||
from lldbsuite.test.decorators import * | ||
import lldbsuite.test.lldbutil as lldbutil | ||
from lldbsuite.test.lldbtest import * | ||
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||
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def getUUID(aoutuuid): | ||
""" | ||
Pull the 20 byte UUID out of the .note.gnu.build-id section that was dumped | ||
to a file already, as part of the build. | ||
""" | ||
with open(aoutuuid, "rb") as f: | ||
data = f.read(36) | ||
if len(data) != 36: | ||
return None | ||
header = struct.unpack_from("<4I", data) | ||
if len(header) != 4: | ||
return None | ||
# 4 element 'prefix', 20 bytes of uuid, 3 byte long string: 'GNU': | ||
if header[0] != 4 or header[1] != 20 or header[2] != 3 or header[3] != 0x554E47: | ||
return None | ||
return data[16:].hex() | ||
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""" | ||
Test support for the DebugInfoD network symbol acquisition protocol. | ||
This one is for simple / no split-dwarf scenarios. | ||
For no-split-dwarf scenarios, there are 2 variations: | ||
1 - A stripped binary with it's corresponding unstripped binary: | ||
2 - A stripped binary with a corresponding --only-keep-debug symbols file | ||
""" | ||
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@skipUnlessPlatform(["linux", "freebsd"]) | ||
class DebugInfodTests(TestBase): | ||
# No need to try every flavor of debug inf. | ||
NO_DEBUG_INFO_TESTCASE = True | ||
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def test_normal_no_symbols(self): | ||
""" | ||
Validate behavior with no symbols or symbol locator. | ||
('baseline negative' behavior) | ||
""" | ||
test_root = self.config_test(["a.out"]) | ||
self.try_breakpoint(False) | ||
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def test_normal_default(self): | ||
""" | ||
Validate behavior with symbols, but no symbol locator. | ||
('baseline positive' behavior) | ||
""" | ||
test_root = self.config_test(["a.out", "a.out.debug"]) | ||
self.try_breakpoint(True) | ||
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def test_debuginfod_symbols(self): | ||
""" | ||
Test behavior with the full binary available from Debuginfod as | ||
'debuginfo' from the plug-in. | ||
""" | ||
test_root = self.config_test(["a.out"], "a.out.full") | ||
self.try_breakpoint(True) | ||
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def test_debuginfod_executable(self): | ||
""" | ||
Test behavior with the full binary available from Debuginfod as | ||
'executable' from the plug-in. | ||
""" | ||
test_root = self.config_test(["a.out"], None, "a.out.full") | ||
self.try_breakpoint(True) | ||
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def test_debuginfod_okd_symbols(self): | ||
""" | ||
Test behavior with the 'only-keep-debug' symbols available from Debuginfod. | ||
""" | ||
test_root = self.config_test(["a.out"], "a.out.debug") | ||
self.try_breakpoint(True) | ||
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def try_breakpoint(self, should_have_loc): | ||
""" | ||
This function creates a target from self.aout, sets a function-name | ||
breakpoint, and checks to see if we have a file/line location, | ||
as a way to validate that the symbols have been loaded. | ||
should_have_loc specifies if we're testing that symbols have or | ||
haven't been loaded. | ||
""" | ||
target = self.dbg.CreateTarget(self.aout) | ||
self.assertTrue(target and target.IsValid(), "Target is valid") | ||
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bp = target.BreakpointCreateByName("func") | ||
self.assertTrue(bp and bp.IsValid(), "Breakpoint is valid") | ||
self.assertEqual(bp.GetNumLocations(), 1) | ||
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loc = bp.GetLocationAtIndex(0) | ||
self.assertTrue(loc and loc.IsValid(), "Location is valid") | ||
addr = loc.GetAddress() | ||
self.assertTrue(addr and addr.IsValid(), "Loc address is valid") | ||
line_entry = addr.GetLineEntry() | ||
self.assertEqual( | ||
should_have_loc, | ||
line_entry != None and line_entry.IsValid(), | ||
"Loc line entry is valid", | ||
) | ||
if should_have_loc: | ||
self.assertEqual(line_entry.GetLine(), 4) | ||
self.assertEqual( | ||
line_entry.GetFileSpec().GetFilename(), | ||
self.main_source_file.GetFilename(), | ||
) | ||
self.dbg.DeleteTarget(target) | ||
shutil.rmtree(self.tmp_dir) | ||
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def config_test(self, local_files, debuginfo=None, executable=None): | ||
""" | ||
Set up a test with local_files[] copied to a different location | ||
so that we control which files are, or are not, found in the file system. | ||
Also, create a stand-alone file-system 'hosted' debuginfod server with the | ||
provided debuginfo and executable files (if they exist) | ||
Make the filesystem look like: | ||
/tmp/<tmpdir>/test/[local_files] | ||
/tmp/<tmpdir>/cache (for lldb to use as a temp cache) | ||
/tmp/<tmpdir>/buildid/<uuid>/executable -> <executable> | ||
/tmp/<tmpdir>/buildid/<uuid>/debuginfo -> <debuginfo> | ||
Returns the /tmp/<tmpdir> path | ||
""" | ||
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self.build() | ||
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uuid = getUUID(self.getBuildArtifact("a.out.uuid")) | ||
if !uuid: | ||
self.fail("Could not get UUID for a.out") | ||
return | ||
self.main_source_file = lldb.SBFileSpec("main.c") | ||
self.tmp_dir = tempfile.mkdtemp() | ||
test_dir = os.path.join(self.tmp_dir, "test") | ||
os.makedirs(test_dir) | ||
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self.aout = "" | ||
# Copy the files used by the test: | ||
for f in local_files: | ||
shutil.copy(self.getBuildArtifact(f), test_dir) | ||
# The first item is the binary to be used for the test | ||
if self.aout == "": | ||
self.aout = os.path.join(test_dir, f) | ||
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use_debuginfod = debuginfo != None or executable != None | ||
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# Populated the 'file://... mocked' Debuginfod server: | ||
if use_debuginfod: | ||
os.makedirs(os.path.join(self.tmp_dir, "cache")) | ||
uuid_dir = os.path.join(self.tmp_dir, "buildid", uuid) | ||
os.makedirs(uuid_dir) | ||
if debuginfo: | ||
shutil.copy( | ||
self.getBuildArtifact(debuginfo), | ||
os.path.join(uuid_dir, "debuginfo"), | ||
) | ||
if executable: | ||
shutil.copy( | ||
self.getBuildArtifact(executable), | ||
os.path.join(uuid_dir, "executable"), | ||
) | ||
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# Configure LLDB for the test: | ||
self.runCmd( | ||
"settings set symbols.enable-external-lookup %s" | ||
% str(use_debuginfod).lower() | ||
) | ||
self.runCmd("settings clear plugin.symbol-locator.debuginfod.server-urls") | ||
if use_debuginfod: | ||
self.runCmd( | ||
"settings set plugin.symbol-locator.debuginfod.cache-path %s/cache" | ||
% self.tmp_dir | ||
) | ||
self.runCmd( | ||
"settings insert-before plugin.symbol-locator.debuginfod.server-urls 0 file://%s" | ||
% self.tmp_dir | ||
) |
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