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"""
Test specific to MIPS
"""
from __future__ import print_function
import os, time
import re
import unittest2
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class AvoidBreakpointInDelaySlotAPITestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@skipIf(archs=no_match(re.compile('mips*')))
def test(self):
self.build()
exe = os.path.join(os.getcwd(), "a.out")
self.expect("file " + exe,
patterns = [ "Current executable set to .*a.out.*" ])
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
breakpoint = target.BreakpointCreateByName('main', 'a.out')
self.assertTrue(breakpoint and
breakpoint.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)
list = target.FindFunctions('foo', lldb.eFunctionNameTypeAuto)
self.assertTrue(list.GetSize() == 1)
sc = list.GetContextAtIndex(0)
self.assertTrue(sc.GetSymbol().GetName() == "foo")
function = sc.GetFunction()
self.assertTrue(function)
self.function(function, target)
def function (self, function, target):
"""Iterate over instructions in function and place a breakpoint on delay slot instruction"""
# Get the list of all instructions in the function
insts = function.GetInstructions(target)
print(insts)
i = 0
for inst in insts:
if (inst.HasDelaySlot()):
# Remember the address of branch instruction.
branchinstaddress = inst.GetAddress().GetLoadAddress(target)
# Get next instruction i.e delay slot instruction.
delayinst = insts.GetInstructionAtIndex(i+1)
delayinstaddr = delayinst.GetAddress().GetLoadAddress(target)
# Set breakpoint on delay slot instruction
breakpoint = target.BreakpointCreateByAddress(delayinstaddr)
# Verify the breakpoint.
self.assertTrue(breakpoint and
breakpoint.GetNumLocations() == 1,
VALID_BREAKPOINT)
# Get the location from breakpoint
location = breakpoint.GetLocationAtIndex(0)
# Get the address where breakpoint is actually set.
bpaddr = location.GetLoadAddress()
# Breakpoint address should be adjusted to the address of branch instruction.
self.assertTrue(branchinstaddress == bpaddr)
i += 1
else:
i += 1
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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