166 lines
7.5 KiB
Python
166 lines
7.5 KiB
Python
"""
|
|
Test some SBValue APIs.
|
|
"""
|
|
|
|
import os, time
|
|
import re
|
|
import unittest2
|
|
import lldb, lldbutil
|
|
from lldbtest import *
|
|
|
|
class ChangeValueAPITestCase(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
|
|
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
|
|
@python_api_test
|
|
@dsym_test
|
|
def test_change_value_with_dsym(self):
|
|
"""Exercise the SBValue::SetValueFromCString API."""
|
|
d = {'EXE': self.exe_name}
|
|
self.buildDsym(dictionary=d)
|
|
self.setTearDownCleanup(dictionary=d)
|
|
self.change_value_api(self.exe_name)
|
|
|
|
@python_api_test
|
|
@dwarf_test
|
|
def test_change_value_with_dwarf(self):
|
|
"""Exercise the SBValue::SetValueFromCString API."""
|
|
d = {'EXE': self.exe_name}
|
|
self.buildDwarf(dictionary=d)
|
|
self.setTearDownCleanup(dictionary=d)
|
|
self.change_value_api(self.exe_name)
|
|
|
|
def setUp(self):
|
|
# Call super's setUp().
|
|
TestBase.setUp(self)
|
|
# We'll use the test method name as the exe_name.
|
|
self.exe_name = self.testMethodName
|
|
# Find the line number to of function 'c'.
|
|
self.line = line_number('main.c', '// Stop here and set values')
|
|
self.check_line = line_number('main.c', '// Stop here and check values')
|
|
self.end_line = line_number ('main.c', '// Set a breakpoint here at the end')
|
|
|
|
@skipIfGcc # llvm.org/pr15039: If GCC is the test compiler, stdout is not available via lldb.SBProcess.GetSTDOUT()
|
|
def change_value_api(self, exe_name):
|
|
"""Exercise some SBValue APIs."""
|
|
exe = os.path.join(os.getcwd(), exe_name)
|
|
|
|
# Create a target by the debugger.
|
|
target = self.dbg.CreateTarget(exe)
|
|
self.assertTrue(target, VALID_TARGET)
|
|
|
|
# Create the breakpoint inside function 'main'.
|
|
breakpoint = target.BreakpointCreateByLocation('main.c', self.line)
|
|
self.assertTrue(breakpoint, VALID_BREAKPOINT)
|
|
|
|
# Create the breakpoint inside the function 'main'
|
|
check_breakpoint = target.BreakpointCreateByLocation('main.c', self.check_line)
|
|
self.assertTrue(check_breakpoint, VALID_BREAKPOINT)
|
|
|
|
# Create the breakpoint inside function 'main'.
|
|
end_breakpoint = target.BreakpointCreateByLocation('main.c', self.end_line)
|
|
self.assertTrue(end_breakpoint, VALID_BREAKPOINT)
|
|
|
|
# Now launch the process, and do not stop at entry point.
|
|
process = target.LaunchSimple(None, None, os.getcwd())
|
|
self.assertTrue(process, PROCESS_IS_VALID)
|
|
|
|
# Get Frame #0.
|
|
self.assertTrue(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")
|
|
frame0 = thread.GetFrameAtIndex(0)
|
|
self.assertTrue (frame0.IsValid(), "Got a valid frame.")
|
|
|
|
# Get the val variable and change it:
|
|
error = lldb.SBError()
|
|
|
|
val_value = frame0.FindVariable ("val")
|
|
self.assertTrue (val_value.IsValid(), "Got the SBValue for val")
|
|
actual_value = val_value.GetValueAsSigned (error, 0);
|
|
self.assertTrue (error.Success(), "Got a value from val")
|
|
self.assertTrue (actual_value == 100, "Got the right value from val")
|
|
|
|
result = val_value.SetValueFromCString ("12345")
|
|
self.assertTrue (result, "Setting val returned True.")
|
|
actual_value = val_value.GetValueAsSigned (error, 0);
|
|
self.assertTrue (error.Success(), "Got a changed value from val")
|
|
self.assertTrue (actual_value == 12345, "Got the right changed value from val")
|
|
|
|
# Now check that we can set a structure element:
|
|
|
|
mine_value = frame0.FindVariable ("mine")
|
|
self.assertTrue (mine_value.IsValid(), "Got the SBValue for mine")
|
|
|
|
mine_second_value = mine_value.GetChildMemberWithName ("second_val")
|
|
self.assertTrue (mine_second_value.IsValid(), "Got second_val from mine")
|
|
actual_value = mine_second_value.GetValueAsUnsigned (error, 0)
|
|
self.assertTrue (error.Success(), "Got an unsigned value for second_val")
|
|
self.assertTrue (actual_value == 5555)
|
|
|
|
result = mine_second_value.SetValueFromCString ("98765")
|
|
self.assertTrue (result, "Success setting mine.second_value.")
|
|
actual_value = mine_second_value.GetValueAsSigned (error, 0);
|
|
self.assertTrue (error.Success(), "Got a changed value from mine.second_val")
|
|
self.assertTrue (actual_value == 98765, "Got the right changed value from mine.second_val")
|
|
|
|
# Next do the same thing with the pointer version.
|
|
ptr_value = frame0.FindVariable ("ptr")
|
|
self.assertTrue (ptr_value.IsValid(), "Got the SBValue for ptr")
|
|
|
|
ptr_second_value = ptr_value.GetChildMemberWithName ("second_val")
|
|
self.assertTrue (ptr_second_value.IsValid(), "Got second_val from ptr")
|
|
actual_value = ptr_second_value.GetValueAsUnsigned (error, 0)
|
|
self.assertTrue (error.Success(), "Got an unsigned value for ptr->second_val")
|
|
self.assertTrue (actual_value == 6666)
|
|
|
|
result = ptr_second_value.SetValueFromCString ("98765")
|
|
self.assertTrue (result, "Success setting ptr->second_value.")
|
|
actual_value = ptr_second_value.GetValueAsSigned (error, 0);
|
|
self.assertTrue (error.Success(), "Got a changed value from ptr->second_val")
|
|
self.assertTrue (actual_value == 98765, "Got the right changed value from ptr->second_val")
|
|
|
|
# gcc may set multiple locations for breakpoint
|
|
breakpoint.SetEnabled(False)
|
|
|
|
# Now continue, grab the stdout and make sure we changed the real values as well...
|
|
process.Continue();
|
|
|
|
self.assertTrue(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")
|
|
|
|
expected_value = "Val - 12345 Mine - 55, 98765, 55555555. Ptr - 66, 98765, 66666666"
|
|
stdout = process.GetSTDOUT(1000)
|
|
self.assertTrue (expected_value in stdout, "STDOUT showed changed values.")
|
|
|
|
# Finally, change the stack pointer to 0, and we should not make it to our end breakpoint.
|
|
frame0 = thread.GetFrameAtIndex(0)
|
|
self.assertTrue (frame0.IsValid(), "Second time: got a valid frame.")
|
|
sp_value = frame0.FindValue ("sp", lldb.eValueTypeRegister);
|
|
self.assertTrue (sp_value.IsValid(), "Got a stack pointer value")
|
|
result = sp_value.SetValueFromCString("1")
|
|
self.assertTrue (result, "Setting sp returned true.")
|
|
actual_value = sp_value.GetValueAsUnsigned (error, 0)
|
|
self.assertTrue (error.Success(), "Got a changed value for sp")
|
|
self.assertTrue (actual_value == 1, "Got the right changed value for sp.")
|
|
|
|
# Boundary condition test the SBValue.CreateValueFromExpression() API.
|
|
# LLDB should not crash!
|
|
nosuchval = mine_value.CreateValueFromExpression(None, None)
|
|
|
|
process.Continue()
|
|
|
|
self.assertTrue(process.GetState() == lldb.eStateStopped)
|
|
thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
|
|
self.assertTrue(thread == None, "We should not have managed to hit our second breakpoint with sp == 1")
|
|
|
|
process.Kill()
|
|
|
|
if __name__ == '__main__':
|
|
import atexit
|
|
lldb.SBDebugger.Initialize()
|
|
atexit.register(lambda: lldb.SBDebugger.Terminate())
|
|
unittest2.main()
|