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"""
Test require hardware breakpoints.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class BreakpointLocationsTestCase(TestBase):
NO_DEBUG_INFO_TESTCASE = True
mydir = TestBase.compute_mydir(__file__)
def supports_hw_breakpoints(self):
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"),
CURRENT_EXECUTABLE_SET)
self.runCmd("breakpoint set -b main --hardware")
self.runCmd("run")
if 'stopped' in self.res.GetOutput():
return 'Hardware breakpoints are supported'
return None
def test_breakpoint(self):
"""Test regular breakpoints when hardware breakpoints are required."""
self.build()
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
self.runCmd("settings set target.require-hardware-breakpoint true")
breakpoint = target.BreakpointCreateByLocation("main.c", 1)
self.assertTrue(breakpoint.IsHardware())
@skipIfWindows
@expectedFailure(supports_hw_breakpoints)
def test_step_range(self):
"""Test stepping when hardware breakpoints are required."""
self.build()
_, _, thread, _ = lldbutil.run_to_line_breakpoint(
self, lldb.SBFileSpec("main.c"), 1)
self.runCmd("settings set target.require-hardware-breakpoint true")
# Ensure we fail in the interpreter.
self.expect("thread step-in")
self.expect("thread step-in", error=True)
# Ensure we fail when stepping through the API.
error = lldb.SBError()
thread.StepInto('', 4, error)
self.assertTrue(error.Fail())
self.assertTrue("Could not create hardware breakpoint for thread plan"
in error.GetCString())
@skipIfWindows
@expectedFailure(supports_hw_breakpoints)
def test_step_out(self):
"""Test stepping out when hardware breakpoints are required."""
self.build()
_, _, thread, _ = lldbutil.run_to_line_breakpoint(
self, lldb.SBFileSpec("main.c"), 1)
self.runCmd("settings set target.require-hardware-breakpoint true")
# Ensure this fails in the command interpreter.
self.expect("thread step-out", error=True)
# Ensure we fail when stepping through the API.
error = lldb.SBError()
thread.StepOut(error)
self.assertTrue(error.Fail())
self.assertTrue("Could not create hardware breakpoint for thread plan"
in error.GetCString())
@skipIfWindows
@expectedFailure(supports_hw_breakpoints)
def test_step_over(self):
"""Test stepping over when hardware breakpoints are required."""
self.build()
_, _, thread, _ = lldbutil.run_to_line_breakpoint(
self, lldb.SBFileSpec("main.c"), 7)
self.runCmd("settings set target.require-hardware-breakpoint true")
# Step over doesn't fail immediately but fails later on.
self.expect(
"thread step-over",
error=True,
substrs=[
'error: Could not create hardware breakpoint for thread plan.'
])
@skipIfWindows
@expectedFailure(supports_hw_breakpoints)
def test_step_until(self):
"""Test stepping until when hardware breakpoints are required."""
self.build()
_, _, thread, _ = lldbutil.run_to_line_breakpoint(
self, lldb.SBFileSpec("main.c"), 7)
self.runCmd("settings set target.require-hardware-breakpoint true")
self.expect("thread until 5", error=True)
# Ensure we fail when stepping through the API.
error = thread.StepOverUntil(lldb.SBFrame(), lldb.SBFileSpec(), 5)
self.assertTrue(error.Fail())
self.assertTrue("Could not create hardware breakpoint for thread plan"
in error.GetCString())
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