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"""
Test symbol table access for main.m.
"""
import os, time
import unittest2
import lldb
from lldbtest import *
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
class ProcessAPITestCase(TestBase):
mydir = os.path.join("python_api", "process")
symbols_list = ['main',
'my_char'
]
@python_api_test
def test_with_dsym_and_python_api(self):
"""Test Python process APIs."""
self.buildDsym()
self.process_api()
@python_api_test
def test_with_dwarf_and_python_api(self):
"""Test Python process APIs."""
self.buildDwarf()
self.process_api()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.line = line_number("main.cpp", "// Set break point at this line and check variable 'my_char'.")
def process_api(self):
"""Test Python process APIs."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
target = self.dbg.CreateTarget(exe)
self.assertTrue(target.IsValid(), VALID_TARGET)
breakpoint = target.BreakpointCreateByLocation("main.cpp", self.line)
self.assertTrue(breakpoint.IsValid(), VALID_BREAKPOINT)
# Launch the process, and do not stop at the entry point.
error = lldb.SBError()
self.process = target.Launch (self.dbg.GetListener(), None, None, os.ctermid(), os.ctermid(), os.ctermid(), None, 0, False, error)
thread = self.process.GetThreadAtIndex(0);
frame = thread.GetFrameAtIndex(0);
# Get the SBValue for the global variable 'my_char'.
val = frame.FindValue("my_char", lldb.eValueTypeVariableGlobal)
location = int(val.GetLocation(frame), 16)
self.DebugSBValue(frame, val)
# Due to the typemap magic (see lldb.swig), we pass in 1 to ReadMemory and
# expect to get a Python string as the result object!
content = self.process.ReadMemory(location, 1, error)
print "content:", content
self.expect(content, "Result from SBProcess.ReadMemory() matches our expected output: 'x'",
exe=False,
startstr = 'x')
#
# Exercise Python APIs to access the symbol table entries.
#
# Create the filespec by which to locate our a.out module.
filespec = lldb.SBFileSpec(exe, False)
module = target.FindModule(filespec)
self.assertTrue(module.IsValid(), VALID_MODULE)
# Create the set of known symbols. As we iterate through the symbol
# table, remove the symbol from the set if it is a known symbol.
expected_symbols = set(self.symbols_list)
from lldbutil import lldb_iter
for symbol in lldb_iter(module, 'GetNumSymbols', 'GetSymbolAtIndex'):
self.assertTrue(symbol.IsValid(), VALID_SYMBOL)
#print "symbol:", symbol
name = symbol.GetName()
if name in expected_symbols:
#print "Removing %s from known_symbols %s" % (name, expected_symbols)
expected_symbols.remove(name)
# At this point, the known_symbols set should have become an empty set.
# If not, raise an error.
#print "symbols unaccounted for:", expected_symbols
self.assertTrue(len(expected_symbols) == 0,
"All the known symbols are accounted for")
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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