mirror of
https://github.com/Gericom/teak-llvm.git
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427 lines
16 KiB
Python
427 lines
16 KiB
Python
"""
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Test SBTarget APIs.
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"""
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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 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 TargetAPITestCase(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 of function 'c'.
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self.line1 = line_number(
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'main.c', '// Find the line number for breakpoint 1 here.')
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self.line2 = line_number(
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'main.c', '// Find the line number for breakpoint 2 here.')
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self.line_main = line_number(
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"main.c", "// Set a break at entry to main.")
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# rdar://problem/9700873
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# Find global variable value fails for dwarf if inferior not started
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# (Was CrashTracer: [USER] 1 crash in Python at _lldb.so: lldb_private::MemoryCache::Read + 94)
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#
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# It does not segfaults now. But for dwarf, the variable value is None if
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# the inferior process does not exist yet. The radar has been updated.
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#@unittest232.skip("segmentation fault -- skipping")
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@add_test_categories(['pyapi'])
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def test_find_global_variables(self):
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"""Exercise SBTarget.FindGlobalVariables() API."""
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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self.find_global_variables('b.out')
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@add_test_categories(['pyapi'])
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def test_find_compile_units(self):
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"""Exercise SBTarget.FindCompileUnits() API."""
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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self.find_compile_units(self.getBuildArtifact('b.out'))
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@add_test_categories(['pyapi'])
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@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
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def test_find_functions(self):
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"""Exercise SBTarget.FindFunctions() API."""
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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self.find_functions('b.out')
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@add_test_categories(['pyapi'])
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def test_get_description(self):
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"""Exercise SBTarget.GetDescription() API."""
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self.build()
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self.get_description()
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@add_test_categories(['pyapi'])
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@expectedFailureAll(oslist=["windows"], bugnumber='llvm.org/pr21765')
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def test_resolve_symbol_context_with_address(self):
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"""Exercise SBTarget.ResolveSymbolContextForAddress() API."""
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self.build()
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self.resolve_symbol_context_with_address()
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@add_test_categories(['pyapi'])
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def test_get_platform(self):
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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target = self.create_simple_target('b.out')
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platform = target.platform
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self.assertTrue(platform, VALID_PLATFORM)
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@add_test_categories(['pyapi'])
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def test_get_data_byte_size(self):
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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target = self.create_simple_target('b.out')
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self.assertEqual(target.data_byte_size, 1)
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@add_test_categories(['pyapi'])
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def test_get_code_byte_size(self):
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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target = self.create_simple_target('b.out')
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self.assertEqual(target.code_byte_size, 1)
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@add_test_categories(['pyapi'])
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def test_resolve_file_address(self):
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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target = self.create_simple_target('b.out')
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# find the file address in the .data section of the main
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# module
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data_section = self.find_data_section(target)
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data_section_addr = data_section.file_addr
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# resolve the above address, and compare the address produced
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# by the resolution against the original address/section
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res_file_addr = target.ResolveFileAddress(data_section_addr)
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self.assertTrue(res_file_addr.IsValid())
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self.assertEqual(data_section_addr, res_file_addr.file_addr)
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data_section2 = res_file_addr.section
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self.assertIsNotNone(data_section2)
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self.assertEqual(data_section.name, data_section2.name)
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@add_test_categories(['pyapi'])
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def test_read_memory(self):
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d = {'EXE': 'b.out'}
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self.build(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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target = self.create_simple_target('b.out')
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breakpoint = target.BreakpointCreateByLocation(
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"main.c", self.line_main)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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# Put debugger into synchronous mode so when we target.LaunchSimple returns
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# it will guaranteed to be at the breakpoint
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self.dbg.SetAsync(False)
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# Launch the process, and do not stop at the entry point.
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process = target.LaunchSimple(
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None, None, self.get_process_working_directory())
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# find the file address in the .data section of the main
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# module
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data_section = self.find_data_section(target)
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sb_addr = lldb.SBAddress(data_section, 0)
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error = lldb.SBError()
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content = target.ReadMemory(sb_addr, 1, error)
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self.assertTrue(error.Success(), "Make sure memory read succeeded")
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self.assertEqual(len(content), 1)
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def create_simple_target(self, fn):
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exe = self.getBuildArtifact(fn)
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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return target
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def find_data_section(self, target):
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mod = target.GetModuleAtIndex(0)
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data_section = None
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for s in mod.sections:
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sect_type = s.GetSectionType()
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if sect_type == lldb.eSectionTypeData:
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data_section = s
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break
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elif sect_type == lldb.eSectionTypeContainer:
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for i in range(s.GetNumSubSections()):
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ss = s.GetSubSectionAtIndex(i)
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sect_type = ss.GetSectionType()
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if sect_type == lldb.eSectionTypeData:
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data_section = ss
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break
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self.assertIsNotNone(data_section)
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return data_section
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def find_global_variables(self, exe_name):
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"""Exercise SBTaget.FindGlobalVariables() API."""
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exe = self.getBuildArtifact(exe_name)
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# rdar://problem/9700873
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# Find global variable value fails for dwarf if inferior not started
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# (Was CrashTracer: [USER] 1 crash in Python at _lldb.so: lldb_private::MemoryCache::Read + 94)
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#
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# Remove the lines to create a breakpoint and to start the inferior
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# which are workarounds for the dwarf case.
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breakpoint = target.BreakpointCreateByLocation('main.c', self.line1)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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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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# Make sure we hit our breakpoint:
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thread_list = lldbutil.get_threads_stopped_at_breakpoint(
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process, breakpoint)
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self.assertTrue(len(thread_list) == 1)
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value_list = target.FindGlobalVariables(
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'my_global_var_of_char_type', 3)
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self.assertTrue(value_list.GetSize() == 1)
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my_global_var = value_list.GetValueAtIndex(0)
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self.DebugSBValue(my_global_var)
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self.assertTrue(my_global_var)
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self.expect(my_global_var.GetName(), exe=False,
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startstr="my_global_var_of_char_type")
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self.expect(my_global_var.GetTypeName(), exe=False,
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startstr="char")
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self.expect(my_global_var.GetValue(), exe=False,
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startstr="'X'")
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# While we are at it, let's also exercise the similar
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# SBModule.FindGlobalVariables() API.
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for m in target.module_iter():
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if os.path.normpath(m.GetFileSpec().GetDirectory()) == self.getBuildDir() and m.GetFileSpec().GetFilename() == exe_name:
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value_list = m.FindGlobalVariables(
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target, 'my_global_var_of_char_type', 3)
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self.assertTrue(value_list.GetSize() == 1)
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self.assertTrue(
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value_list.GetValueAtIndex(0).GetValue() == "'X'")
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break
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def find_compile_units(self, exe):
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"""Exercise SBTarget.FindCompileUnits() API."""
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source_name = "main.c"
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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list = target.FindCompileUnits(lldb.SBFileSpec(source_name, False))
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# Executable has been built just from one source file 'main.c',
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# so we may check only the first element of list.
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self.assertTrue(
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list[0].GetCompileUnit().GetFileSpec().GetFilename() == source_name)
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def find_functions(self, exe_name):
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"""Exercise SBTaget.FindFunctions() API."""
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exe = self.getBuildArtifact(exe_name)
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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list = target.FindFunctions('c', lldb.eFunctionNameTypeAuto)
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self.assertTrue(list.GetSize() == 1)
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for sc in list:
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self.assertTrue(
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sc.GetModule().GetFileSpec().GetFilename() == exe_name)
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self.assertTrue(sc.GetSymbol().GetName() == 'c')
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def get_description(self):
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"""Exercise SBTaget.GetDescription() API."""
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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from lldbsuite.test.lldbutil import get_description
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# get_description() allows no option to mean
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# lldb.eDescriptionLevelBrief.
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desc = get_description(target)
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#desc = get_description(target, option=lldb.eDescriptionLevelBrief)
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if not desc:
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self.fail("SBTarget.GetDescription() failed")
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self.expect(desc, exe=False,
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substrs=['a.out'])
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self.expect(desc, exe=False, matching=False,
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substrs=['Target', 'Module', 'Breakpoint'])
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desc = get_description(target, option=lldb.eDescriptionLevelFull)
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if not desc:
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self.fail("SBTarget.GetDescription() failed")
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self.expect(desc, exe=False,
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substrs=['a.out', 'Target', 'Module', 'Breakpoint'])
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@not_remote_testsuite_ready
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@add_test_categories(['pyapi'])
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@no_debug_info_test
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def test_launch_new_process_and_redirect_stdout(self):
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"""Exercise SBTaget.Launch() API with redirected stdout."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Add an extra twist of stopping the inferior in a breakpoint, and then continue till it's done.
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# We should still see the entire stdout redirected once the process is
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# finished.
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line = line_number('main.c', '// a(3) -> c(3)')
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breakpoint = target.BreakpointCreateByLocation('main.c', line)
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# Now launch the process, do not stop at entry point, and redirect stdout to "stdout.txt" file.
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# The inferior should run to completion after "process.Continue()"
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# call.
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local_path = self.getBuildArtifact("stdout.txt")
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if os.path.exists(local_path):
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os.remove(local_path)
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if lldb.remote_platform:
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stdout_path = lldbutil.append_to_process_working_directory(self,
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"lldb-stdout-redirect.txt")
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else:
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stdout_path = local_path
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error = lldb.SBError()
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process = target.Launch(
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self.dbg.GetListener(),
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None,
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None,
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None,
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stdout_path,
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None,
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None,
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0,
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False,
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error)
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process.Continue()
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#self.runCmd("process status")
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if lldb.remote_platform:
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# copy output file to host
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lldb.remote_platform.Get(
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lldb.SBFileSpec(stdout_path),
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lldb.SBFileSpec(local_path))
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# The 'stdout.txt' file should now exist.
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self.assertTrue(
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os.path.isfile(local_path),
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"'stdout.txt' exists due to redirected stdout via SBTarget.Launch() API.")
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# Read the output file produced by running the program.
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with open(local_path, 'r') as f:
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output = f.read()
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self.expect(output, exe=False,
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substrs=["a(1)", "b(2)", "a(3)"])
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def resolve_symbol_context_with_address(self):
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"""Exercise SBTaget.ResolveSymbolContextForAddress() API."""
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Now create the two breakpoints inside function 'a'.
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breakpoint1 = target.BreakpointCreateByLocation('main.c', self.line1)
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breakpoint2 = target.BreakpointCreateByLocation('main.c', self.line2)
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#print("breakpoint1:", breakpoint1)
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#print("breakpoint2:", breakpoint2)
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self.assertTrue(breakpoint1 and
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breakpoint1.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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self.assertTrue(breakpoint2 and
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breakpoint2.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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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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# Frame #0 should be on self.line1.
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self.assertTrue(process.GetState() == lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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self.assertTrue(
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thread.IsValid(),
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"There should be a thread stopped due to breakpoint condition")
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#self.runCmd("process status")
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frame0 = thread.GetFrameAtIndex(0)
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lineEntry = frame0.GetLineEntry()
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self.assertTrue(lineEntry.GetLine() == self.line1)
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address1 = lineEntry.GetStartAddress()
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# Continue the inferior, the breakpoint 2 should be hit.
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process.Continue()
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self.assertTrue(process.GetState() == lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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self.assertTrue(
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thread.IsValid(),
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"There should be a thread stopped due to breakpoint condition")
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#self.runCmd("process status")
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frame0 = thread.GetFrameAtIndex(0)
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lineEntry = frame0.GetLineEntry()
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self.assertTrue(lineEntry.GetLine() == self.line2)
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address2 = lineEntry.GetStartAddress()
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#print("address1:", address1)
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#print("address2:", address2)
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# Now call SBTarget.ResolveSymbolContextForAddress() with the addresses
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# from our line entry.
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context1 = target.ResolveSymbolContextForAddress(
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address1, lldb.eSymbolContextEverything)
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context2 = target.ResolveSymbolContextForAddress(
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address2, lldb.eSymbolContextEverything)
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self.assertTrue(context1 and context2)
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#print("context1:", context1)
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#print("context2:", context2)
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# Verify that the context point to the same function 'a'.
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symbol1 = context1.GetSymbol()
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symbol2 = context2.GetSymbol()
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self.assertTrue(symbol1 and symbol2)
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#print("symbol1:", symbol1)
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#print("symbol2:", symbol2)
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from lldbsuite.test.lldbutil import get_description
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desc1 = get_description(symbol1)
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desc2 = get_description(symbol2)
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self.assertTrue(desc1 and desc2 and desc1 == desc2,
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"The two addresses should resolve to the same symbol")
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