""" Test SBTarget APIs. """ from __future__ import print_function import unittest2 import os import lldb from lldbsuite.test.decorators import * from lldbsuite.test.lldbtest import * from lldbsuite.test import lldbutil class TargetAPITestCase(TestBase): mydir = TestBase.compute_mydir(__file__) def setUp(self): # Call super's setUp(). TestBase.setUp(self) # Find the line number to of function 'c'. self.line1 = line_number( 'main.c', '// Find the line number for breakpoint 1 here.') self.line2 = line_number( 'main.c', '// Find the line number for breakpoint 2 here.') self.line_main = line_number( "main.c", "// Set a break at entry to main.") # rdar://problem/9700873 # Find global variable value fails for dwarf if inferior not started # (Was CrashTracer: [USER] 1 crash in Python at _lldb.so: lldb_private::MemoryCache::Read + 94) # # It does not segfaults now. But for dwarf, the variable value is None if # the inferior process does not exist yet. The radar has been updated. #@unittest232.skip("segmentation fault -- skipping") def test_find_global_variables(self): """Exercise SBTarget.FindGlobalVariables() API.""" d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) self.find_global_variables('b.out') def test_find_compile_units(self): """Exercise SBTarget.FindCompileUnits() API.""" d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) self.find_compile_units(self.getBuildArtifact('b.out')) @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") def test_find_functions(self): """Exercise SBTarget.FindFunctions() API.""" d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) self.find_functions('b.out') def test_get_description(self): """Exercise SBTarget.GetDescription() API.""" self.build() self.get_description() @expectedFailureAll(oslist=["windows"], bugnumber='llvm.org/pr21765') def test_resolve_symbol_context_with_address(self): """Exercise SBTarget.ResolveSymbolContextForAddress() API.""" self.build() self.resolve_symbol_context_with_address() def test_get_platform(self): d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') platform = target.platform self.assertTrue(platform, VALID_PLATFORM) def test_get_data_byte_size(self): d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') self.assertEqual(target.data_byte_size, 1) def test_get_code_byte_size(self): d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') self.assertEqual(target.code_byte_size, 1) def test_resolve_file_address(self): d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') # find the file address in the .data section of the main # module data_section = self.find_data_section(target) data_section_addr = data_section.file_addr # resolve the above address, and compare the address produced # by the resolution against the original address/section res_file_addr = target.ResolveFileAddress(data_section_addr) self.assertTrue(res_file_addr.IsValid()) self.assertEqual(data_section_addr, res_file_addr.file_addr) data_section2 = res_file_addr.section self.assertIsNotNone(data_section2) self.assertEqual(data_section.name, data_section2.name) def test_get_ABIName(self): d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') abi_pre_launch = target.GetABIName() self.assertTrue(len(abi_pre_launch) != 0, "Got an ABI string") breakpoint = target.BreakpointCreateByLocation( "main.c", self.line_main) self.assertTrue(breakpoint, VALID_BREAKPOINT) # Put debugger into synchronous mode so when we target.LaunchSimple returns # it will guaranteed to be at the breakpoint self.dbg.SetAsync(False) # Launch the process, and do not stop at the entry point. process = target.LaunchSimple( None, None, self.get_process_working_directory()) abi_after_launch = target.GetABIName() self.assertEqual(abi_pre_launch, abi_after_launch, "ABI's match before and during run") def test_read_memory(self): d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') breakpoint = target.BreakpointCreateByLocation( "main.c", self.line_main) self.assertTrue(breakpoint, VALID_BREAKPOINT) # Put debugger into synchronous mode so when we target.LaunchSimple returns # it will guaranteed to be at the breakpoint self.dbg.SetAsync(False) # Launch the process, and do not stop at the entry point. process = target.LaunchSimple( None, None, self.get_process_working_directory()) # find the file address in the .data section of the main # module data_section = self.find_data_section(target) sb_addr = lldb.SBAddress(data_section, 0) error = lldb.SBError() content = target.ReadMemory(sb_addr, 1, error) self.assertSuccess(error, "Make sure memory read succeeded") self.assertEqual(len(content), 1) @skipIfWindows # stdio manipulation unsupported on Windows @skipIfRemote # stdio manipulation unsupported on remote iOS devices @skipIf(oslist=["linux"], archs=["arm", "aarch64"]) @no_debug_info_test def test_launch_simple(self): d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') # Set the debugger to synchronous mode so we only continue after the # process has exited. self.dbg.SetAsync(False) process = target.LaunchSimple( ['foo', 'bar'], ['baz'], self.get_process_working_directory()) process.Continue() self.assertEqual(process.GetState(), lldb.eStateExited) output = process.GetSTDOUT(9999) self.assertIn('arg: foo', output) self.assertIn('arg: bar', output) self.assertIn('env: baz', output) self.runCmd("setting set target.run-args foo") self.runCmd("setting set target.env-vars bar=baz") process = target.LaunchSimple(None, None, self.get_process_working_directory()) process.Continue() self.assertEqual(process.GetState(), lldb.eStateExited) output = process.GetSTDOUT(9999) self.assertIn('arg: foo', output) self.assertIn('env: bar=baz', output) self.runCmd("settings set target.disable-stdio true") process = target.LaunchSimple( None, None, self.get_process_working_directory()) process.Continue() self.assertEqual(process.GetState(), lldb.eStateExited) output = process.GetSTDOUT(9999) self.assertEqual(output, "") def create_simple_target(self, fn): exe = self.getBuildArtifact(fn) target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) return target def find_data_section(self, target): mod = target.GetModuleAtIndex(0) data_section = None for s in mod.sections: sect_type = s.GetSectionType() if sect_type == lldb.eSectionTypeData: data_section = s break elif sect_type == lldb.eSectionTypeContainer: for i in range(s.GetNumSubSections()): ss = s.GetSubSectionAtIndex(i) sect_type = ss.GetSectionType() if sect_type == lldb.eSectionTypeData: data_section = ss break self.assertIsNotNone(data_section) return data_section def find_global_variables(self, exe_name): """Exercise SBTarget.FindGlobalVariables() API.""" exe = self.getBuildArtifact(exe_name) # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) # rdar://problem/9700873 # Find global variable value fails for dwarf if inferior not started # (Was CrashTracer: [USER] 1 crash in Python at _lldb.so: lldb_private::MemoryCache::Read + 94) # # Remove the lines to create a breakpoint and to start the inferior # which are workarounds for the dwarf case. breakpoint = target.BreakpointCreateByLocation('main.c', self.line1) self.assertTrue(breakpoint, VALID_BREAKPOINT) # Now launch the process, and do not stop at entry point. process = target.LaunchSimple( None, None, self.get_process_working_directory()) self.assertTrue(process, PROCESS_IS_VALID) # Make sure we hit our breakpoint: thread_list = lldbutil.get_threads_stopped_at_breakpoint( process, breakpoint) self.assertEqual(len(thread_list), 1) value_list = target.FindGlobalVariables( 'my_global_var_of_char_type', 3) self.assertEqual(value_list.GetSize(), 1) my_global_var = value_list.GetValueAtIndex(0) self.DebugSBValue(my_global_var) self.assertTrue(my_global_var) self.expect(my_global_var.GetName(), exe=False, startstr="my_global_var_of_char_type") self.expect(my_global_var.GetTypeName(), exe=False, startstr="char") self.expect(my_global_var.GetValue(), exe=False, startstr="'X'") # While we are at it, let's also exercise the similar # SBModule.FindGlobalVariables() API. for m in target.module_iter(): if os.path.normpath(m.GetFileSpec().GetDirectory()) == self.getBuildDir() and m.GetFileSpec().GetFilename() == exe_name: value_list = m.FindGlobalVariables( target, 'my_global_var_of_char_type', 3) self.assertEqual(value_list.GetSize(), 1) self.assertEqual( value_list.GetValueAtIndex(0).GetValue(), "'X'") break def find_compile_units(self, exe): """Exercise SBTarget.FindCompileUnits() API.""" source_name = "main.c" # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) list = target.FindCompileUnits(lldb.SBFileSpec(source_name, False)) # Executable has been built just from one source file 'main.c', # so we may check only the first element of list. self.assertEqual( list[0].GetCompileUnit().GetFileSpec().GetFilename(), source_name) def find_functions(self, exe_name): """Exercise SBTarget.FindFunctions() API.""" exe = self.getBuildArtifact(exe_name) # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) # Try it with a null name: list = target.FindFunctions(None, lldb.eFunctionNameTypeAuto) self.assertEqual(list.GetSize(), 0) list = target.FindFunctions('c', lldb.eFunctionNameTypeAuto) self.assertEqual(list.GetSize(), 1) for sc in list: self.assertEqual( sc.GetModule().GetFileSpec().GetFilename(), exe_name) self.assertEqual(sc.GetSymbol().GetName(), 'c') def get_description(self): """Exercise SBTarget.GetDescription() API.""" exe = self.getBuildArtifact("a.out") # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) from lldbsuite.test.lldbutil import get_description # get_description() allows no option to mean # lldb.eDescriptionLevelBrief. desc = get_description(target) #desc = get_description(target, option=lldb.eDescriptionLevelBrief) if not desc: self.fail("SBTarget.GetDescription() failed") self.expect(desc, exe=False, substrs=['a.out']) self.expect(desc, exe=False, matching=False, substrs=['Target', 'Module', 'Breakpoint']) desc = get_description(target, option=lldb.eDescriptionLevelFull) if not desc: self.fail("SBTarget.GetDescription() failed") self.expect(desc, exe=False, substrs=['Target', 'Module', 'a.out', 'Breakpoint']) @skipIfRemote @no_debug_info_test def test_launch_new_process_and_redirect_stdout(self): """Exercise SBTarget.Launch() API with redirected stdout.""" self.build() exe = self.getBuildArtifact("a.out") # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) # Add an extra twist of stopping the inferior in a breakpoint, and then continue till it's done. # We should still see the entire stdout redirected once the process is # finished. line = line_number('main.c', '// a(3) -> c(3)') breakpoint = target.BreakpointCreateByLocation('main.c', line) # Now launch the process, do not stop at entry point, and redirect stdout to "stdout.txt" file. # The inferior should run to completion after "process.Continue()" # call. local_path = self.getBuildArtifact("stdout.txt") if os.path.exists(local_path): os.remove(local_path) if lldb.remote_platform: stdout_path = lldbutil.append_to_process_working_directory(self, "lldb-stdout-redirect.txt") else: stdout_path = local_path error = lldb.SBError() process = target.Launch( self.dbg.GetListener(), None, None, None, stdout_path, None, None, 0, False, error) process.Continue() #self.runCmd("process status") if lldb.remote_platform: # copy output file to host lldb.remote_platform.Get( lldb.SBFileSpec(stdout_path), lldb.SBFileSpec(local_path)) # The 'stdout.txt' file should now exist. self.assertTrue( os.path.isfile(local_path), "'stdout.txt' exists due to redirected stdout via SBTarget.Launch() API.") # Read the output file produced by running the program. with open(local_path, 'r') as f: output = f.read() self.expect(output, exe=False, substrs=["a(1)", "b(2)", "a(3)"]) def resolve_symbol_context_with_address(self): """Exercise SBTarget.ResolveSymbolContextForAddress() API.""" exe = self.getBuildArtifact("a.out") # Create a target by the debugger. target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) # Now create the two breakpoints inside function 'a'. breakpoint1 = target.BreakpointCreateByLocation('main.c', self.line1) breakpoint2 = target.BreakpointCreateByLocation('main.c', self.line2) self.trace("breakpoint1:", breakpoint1) self.trace("breakpoint2:", breakpoint2) self.assertTrue(breakpoint1 and breakpoint1.GetNumLocations() == 1, VALID_BREAKPOINT) self.assertTrue(breakpoint2 and breakpoint2.GetNumLocations() == 1, VALID_BREAKPOINT) # Now launch the process, and do not stop at entry point. process = target.LaunchSimple( None, None, self.get_process_working_directory()) self.assertTrue(process, PROCESS_IS_VALID) # Frame #0 should be on self.line1. self.assertEqual(process.GetState(), lldb.eStateStopped) thread = lldbutil.get_stopped_thread( process, lldb.eStopReasonBreakpoint) self.assertTrue( thread.IsValid(), "There should be a thread stopped due to breakpoint condition") #self.runCmd("process status") frame0 = thread.GetFrameAtIndex(0) lineEntry = frame0.GetLineEntry() self.assertEqual(lineEntry.GetLine(), self.line1) address1 = lineEntry.GetStartAddress() # Continue the inferior, the breakpoint 2 should be hit. process.Continue() self.assertEqual(process.GetState(), lldb.eStateStopped) thread = lldbutil.get_stopped_thread( process, lldb.eStopReasonBreakpoint) self.assertTrue( thread.IsValid(), "There should be a thread stopped due to breakpoint condition") #self.runCmd("process status") frame0 = thread.GetFrameAtIndex(0) lineEntry = frame0.GetLineEntry() self.assertEqual(lineEntry.GetLine(), self.line2) address2 = lineEntry.GetStartAddress() self.trace("address1:", address1) self.trace("address2:", address2) # Now call SBTarget.ResolveSymbolContextForAddress() with the addresses # from our line entry. context1 = target.ResolveSymbolContextForAddress( address1, lldb.eSymbolContextEverything) context2 = target.ResolveSymbolContextForAddress( address2, lldb.eSymbolContextEverything) self.assertTrue(context1 and context2) self.trace("context1:", context1) self.trace("context2:", context2) # Verify that the context point to the same function 'a'. symbol1 = context1.GetSymbol() symbol2 = context2.GetSymbol() self.assertTrue(symbol1 and symbol2) self.trace("symbol1:", symbol1) self.trace("symbol2:", symbol2) from lldbsuite.test.lldbutil import get_description desc1 = get_description(symbol1) desc2 = get_description(symbol2) self.assertTrue(desc1 and desc2 and desc1 == desc2, "The two addresses should resolve to the same symbol") @skipIfRemote def test_default_arch(self): """ Test the other two target create methods using LLDB_ARCH_DEFAULT. """ self.build() exe = self.getBuildArtifact("a.out") target = self.dbg.CreateTargetWithFileAndArch(exe, lldb.LLDB_ARCH_DEFAULT) self.assertTrue(target.IsValid(), "Default arch made a valid target.") # This should also work with the target's triple: target2 = self.dbg.CreateTargetWithFileAndArch(exe, target.GetTriple()) self.assertTrue(target2.IsValid(), "Round trip with triple works") # And this triple should work for the FileAndTriple API: target3 = self.dbg.CreateTargetWithFileAndTargetTriple(exe, target.GetTriple()) self.assertTrue(target3.IsValid()) @skipIfWindows def test_is_loaded(self): """Exercise SBTarget.IsLoaded(SBModule&) API.""" d = {'EXE': 'b.out'} self.build(dictionary=d) self.setTearDownCleanup(dictionary=d) target = self.create_simple_target('b.out') self.assertFalse(target.IsLoaded(lldb.SBModule())) num_modules = target.GetNumModules() for i in range(num_modules): module = target.GetModuleAtIndex(i) self.assertFalse(target.IsLoaded(module), "Target that isn't " "running shouldn't have any module loaded.") process = target.LaunchSimple(None, None, self.get_process_working_directory()) for i in range(num_modules): module = target.GetModuleAtIndex(i) self.assertTrue(target.IsLoaded(module), "Running the target should " "have loaded its modules.")