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# Test the unwinder and the frame filter.
# flake8: NOQA: F821
import platform
def do_unwinder_test():
# The unwinder is disabled by default for the moment. Turn it on to check
# that the unwinder works as expected.
import gdb
gdb.execute("enable unwinder .* SpiderMonkey")
run_fragment("unwind.simple", "Something")
first = True
# The unwinder is a bit flaky still but should at least be able to
# recognize one set of entry and exit frames. This also tests to
# make sure we didn't end up solely in the interpreter.
found_entry = False
found_exit = False
found_main = False
found_inner = False
found_outer = False
frames = list(gdb.frames.execute_frame_filters(gdb.newest_frame(), 0, -1))
for frame in frames:
print("examining " + frame.function())
if first:
assert_eq(frame.function().startswith("Something"), True)
first = False
elif frame.function() == "<<FrameType::Exit>>":
found_exit = True
elif frame.function() == "<<FrameType::CppToJSJit>>":
found_entry = True
elif frame.function() == "main":
found_main = True
elif "unwindFunctionInner" in frame.function():
found_inner = True
elif "unwindFunctionOuter" in frame.function():
found_outer = True
# Had to have found a frame.
assert_eq(first, False)
# Had to have found main.
assert_eq(found_main, True)
# Had to have found the entry and exit frames.
assert_eq(found_exit, True)
assert_eq(found_entry, True)
# Had to have found the names of the two JS functions.
assert_eq(found_inner, True)
assert_eq(found_outer, True)
# Only on the right platforms.
if platform.machine() == "x86_64" and platform.system() == "Linux":
# Only test when gdb has the unwinder feature.
try:
import gdb.unwinder # NOQA: F401
do_unwinder_test()
except Exception:
pass
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