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TestSBData.py
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TestSBData.py
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"""Test the SBData APIs."""
from math import fabs
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class SBDataAPICase(TestBase):
mydir = TestBase.compute_mydir(__file__)
NO_DEBUG_INFO_TESTCASE = True
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break on inside main.cpp.
self.line = line_number('main.cpp', '// set breakpoint here')
@add_test_categories(['pyapi'])
@skipIfReproducer # SBData::SetData is not instrumented.
def test_byte_order_and_address_byte_size(self):
"""Test the SBData::SetData() to ensure the byte order and address
byte size are obeyed"""
addr_data = b'\x11\x22\x33\x44\x55\x66\x77\x88'
error = lldb.SBError()
data = lldb.SBData()
data.SetData(error, addr_data, lldb.eByteOrderBig, 4)
addr = data.GetAddress(error, 0)
self.assertTrue(addr == 0x11223344);
data.SetData(error, addr_data, lldb.eByteOrderBig, 8)
addr = data.GetAddress(error, 0)
self.assertTrue(addr == 0x1122334455667788);
data.SetData(error, addr_data, lldb.eByteOrderLittle, 4)
addr = data.GetAddress(error, 0)
self.assertTrue(addr == 0x44332211);
data.SetData(error, addr_data, lldb.eByteOrderLittle, 8)
addr = data.GetAddress(error, 0)
self.assertTrue(addr == 0x8877665544332211);
@add_test_categories(['pyapi'])
@skipIfReproducer # SBData::SetData is not instrumented.
def test_with_run_command(self):
"""Test the SBData APIs."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
target = self.dbg.GetSelectedTarget()
process = target.GetProcess()
thread = lldbutil.get_stopped_thread(
process, lldb.eStopReasonBreakpoint)
self.assertIsNotNone(thread)
frame = thread.GetSelectedFrame()
foobar = frame.FindVariable('foobar')
self.assertTrue(foobar.IsValid())
data = foobar.GetPointeeData(0, 2)
offset = 0
error = lldb.SBError()
self.assert_data(data.GetUnsignedInt32, offset, 1)
offset += 4
low = data.GetSignedInt16(error, offset)
self.assertTrue(error.Success())
offset += 2
high = data.GetSignedInt16(error, offset)
self.assertTrue(error.Success())
offset += 2
self.assertTrue(
(low == 9 and high == 0) or (
low == 0 and high == 9),
'foo[0].b == 9')
self.assertTrue(
fabs(
data.GetFloat(
error,
offset) -
3.14) < 1,
'foo[0].c == 3.14')
self.assertTrue(error.Success())
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 8)
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 5)
offset += 4
self.runCmd("n")
offset = 16
self.assert_data(data.GetUnsignedInt32, offset, 5)
data = foobar.GetPointeeData(1, 1)
offset = 0
self.assert_data(data.GetSignedInt32, offset, 8)
offset += 4
self.assert_data(data.GetSignedInt32, offset, 7)
offset += 8
self.assertTrue(
data.GetUnsignedInt32(
error,
offset) == 0,
'do not read beyond end')
self.assertTrue(not error.Success())
error.Clear() # clear the error for the next test
star_foobar = foobar.Dereference()
self.assertTrue(star_foobar.IsValid())
data = star_foobar.GetData()
offset = 0
self.assert_data(data.GetUnsignedInt32, offset, 1)
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 9)
foobar_addr = star_foobar.GetLoadAddress()
foobar_addr += 12
# http://llvm.org/bugs/show_bug.cgi?id=11579
# lldb::SBValue::CreateValueFromAddress does not verify SBType::GetPointerType succeeds
# This should not crash LLDB.
nothing = foobar.CreateValueFromAddress(
"nothing", foobar_addr, star_foobar.GetType().GetBasicType(
lldb.eBasicTypeInvalid))
new_foobar = foobar.CreateValueFromAddress(
"f00", foobar_addr, star_foobar.GetType())
self.assertTrue(new_foobar.IsValid())
data = new_foobar.GetData()
self.assertTrue(data.uint32[0] == 8, 'then foo[1].a == 8')
self.assertTrue(data.uint32[1] == 7, 'then foo[1].b == 7')
# exploiting that sizeof(uint32) == sizeof(float)
self.assertTrue(fabs(data.float[2] - 3.14) < 1, 'foo[1].c == 3.14')
self.runCmd("n")
offset = 0
self.assert_data(data.GetUnsignedInt32, offset, 8)
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 7)
offset += 4
self.assertTrue(
fabs(
data.GetFloat(
error,
offset) -
3.14) < 1,
'foo[1].c == 3.14')
self.assertTrue(error.Success())
data = new_foobar.GetData()
offset = 0
self.assert_data(data.GetUnsignedInt32, offset, 8)
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 7)
offset += 4
self.assertTrue(
fabs(
data.GetFloat(
error,
offset) -
6.28) < 1,
'foo[1].c == 6.28')
self.assertTrue(error.Success())
self.runCmd("n")
barfoo = frame.FindVariable('barfoo')
data = barfoo.GetData()
offset = 0
self.assert_data(data.GetUnsignedInt32, offset, 1)
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 2)
offset += 4
self.assertTrue(
fabs(
data.GetFloat(
error,
offset) -
3) < 1,
'barfoo[0].c == 3')
self.assertTrue(error.Success())
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 4)
offset += 4
self.assert_data(data.GetUnsignedInt32, offset, 5)
offset += 4
self.assertTrue(
fabs(
data.GetFloat(
error,
offset) -
6) < 1,
'barfoo[1].c == 6')
self.assertTrue(error.Success())
new_object = barfoo.CreateValueFromData(
"new_object", data, barfoo.GetType().GetBasicType(
lldb.eBasicTypeInt))
self.assertTrue(new_object.GetValue() == "1", 'new_object == 1')
if data.GetByteOrder() == lldb.eByteOrderBig:
data.SetData(
error,
'\0\0\0A',
data.GetByteOrder(),
data.GetAddressByteSize())
else:
data.SetData(
error,
'A\0\0\0',
data.GetByteOrder(),
data.GetAddressByteSize())
self.assertTrue(error.Success())
data2 = lldb.SBData()
data2.SetData(
error,
'BCD',
data.GetByteOrder(),
data.GetAddressByteSize())
self.assertTrue(error.Success())
data.Append(data2)
# this breaks on EBCDIC
offset = 0
self.assert_data(data.GetUnsignedInt32, offset, 65)
offset += 4
self.assert_data(data.GetUnsignedInt8, offset, 66)
offset += 1
self.assert_data(data.GetUnsignedInt8, offset, 67)
offset += 1
self.assert_data(data.GetUnsignedInt8, offset, 68)
offset += 1
# check the new API calls introduced per LLVM llvm.org/prenhancement request
# 11619 (Allow creating SBData values from arrays or primitives in
# Python)
hello_str = "hello!"
data2 = lldb.SBData.CreateDataFromCString(
process.GetByteOrder(), process.GetAddressByteSize(), hello_str)
self.assertTrue(len(data2.uint8) == len(hello_str))
self.assertTrue(data2.uint8[0] == 104, 'h == 104')
self.assertTrue(data2.uint8[1] == 101, 'e == 101')
self.assertTrue(data2.uint8[2] == 108, 'l == 108')
self.assert_data(data2.GetUnsignedInt8, 3, 108) # l
self.assertTrue(data2.uint8[4] == 111, 'o == 111')
self.assert_data(data2.GetUnsignedInt8, 5, 33) # !
uint_lists = [[1, 2, 3, 4, 5], [int(i) for i in [1, 2, 3, 4, 5]]]
int_lists = [[2, -2], [int(i) for i in [2, -2]]]
for l in uint_lists:
data2 = lldb.SBData.CreateDataFromUInt64Array(
process.GetByteOrder(), process.GetAddressByteSize(), l)
self.assert_data(data2.GetUnsignedInt64, 0, 1)
self.assert_data(data2.GetUnsignedInt64, 8, 2)
self.assert_data(data2.GetUnsignedInt64, 16, 3)
self.assert_data(data2.GetUnsignedInt64, 24, 4)
self.assert_data(data2.GetUnsignedInt64, 32, 5)
self.assertTrue(
data2.uint64s == [
1,
2,
3,
4,
5],
'read_data_helper failure: data2 == [1,2,3,4,5]')
for l in int_lists:
data2 = lldb.SBData.CreateDataFromSInt32Array(
process.GetByteOrder(), process.GetAddressByteSize(), l)
self.assertTrue(
data2.sint32[
0:2] == [
2, -2], 'signed32 data2 = [2,-2]')
data2.Append(
lldb.SBData.CreateDataFromSInt64Array(
process.GetByteOrder(),
process.GetAddressByteSize(),
int_lists[0]))
self.assert_data(data2.GetSignedInt32, 0, 2)
self.assert_data(data2.GetSignedInt32, 4, -2)
self.assertTrue(
data2.sint64[
1:3] == [
2, -2], 'signed64 data2 = [2,-2]')
for l in int_lists:
data2 = lldb.SBData.CreateDataFromSInt64Array(
process.GetByteOrder(), process.GetAddressByteSize(), l)
self.assert_data(data2.GetSignedInt64, 0, 2)
self.assert_data(data2.GetSignedInt64, 8, -2)
self.assertTrue(
data2.sint64[
0:2] == [
2, -2], 'signed64 data2 = [2,-2]')
for l in uint_lists:
data2 = lldb.SBData.CreateDataFromUInt32Array(
process.GetByteOrder(), process.GetAddressByteSize(), l)
self.assert_data(data2.GetUnsignedInt32, 0, 1)
self.assert_data(data2.GetUnsignedInt32, 4, 2)
self.assert_data(data2.GetUnsignedInt32, 8, 3)
self.assert_data(data2.GetUnsignedInt32, 12, 4)
self.assert_data(data2.GetUnsignedInt32, 16, 5)
bool_list = [True, True, False, False, True, False]
data2 = lldb.SBData.CreateDataFromSInt32Array(
process.GetByteOrder(), process.GetAddressByteSize(), bool_list)
self.assertTrue(
data2.sint32[
0:6] == [
1,
1,
0,
0,
1,
0],
'signed32 data2 = [1, 1, 0, 0, 1, 0]')
data2 = lldb.SBData.CreateDataFromUInt32Array(
process.GetByteOrder(), process.GetAddressByteSize(), bool_list)
self.assertTrue(
data2.uint32[
0:6] == [
1,
1,
0,
0,
1,
0],
'unsigned32 data2 = [1, 1, 0, 0, 1, 0]')
data2 = lldb.SBData.CreateDataFromSInt64Array(
process.GetByteOrder(), process.GetAddressByteSize(), bool_list)
self.assertTrue(
data2.sint64[
0:6] == [
1,
1,
0,
0,
1,
0],
'signed64 data2 = [1, 1, 0, 0, 1, 0]')
data2 = lldb.SBData.CreateDataFromUInt64Array(
process.GetByteOrder(), process.GetAddressByteSize(), bool_list)
self.assertTrue(
data2.uint64[
0:6] == [
1,
1,
0,
0,
1,
0],
'signed64 data2 = [1, 1, 0, 0, 1, 0]')
data2 = lldb.SBData.CreateDataFromDoubleArray(
process.GetByteOrder(), process.GetAddressByteSize(), [
3.14, 6.28, 2.71])
self.assertTrue(
fabs(
data2.GetDouble(
error,
0) -
3.14) < 0.5,
'double data2[0] = 3.14')
self.assertTrue(error.Success())
self.assertTrue(
fabs(
data2.GetDouble(
error,
8) -
6.28) < 0.5,
'double data2[1] = 6.28')
self.assertTrue(error.Success())
self.assertTrue(
fabs(
data2.GetDouble(
error,
16) -
2.71) < 0.5,
'double data2[2] = 2.71')
self.assertTrue(error.Success())
data2 = lldb.SBData()
data2.SetDataFromCString(hello_str)
self.assertTrue(len(data2.uint8) == len(hello_str))
self.assert_data(data2.GetUnsignedInt8, 0, 104)
self.assert_data(data2.GetUnsignedInt8, 1, 101)
self.assert_data(data2.GetUnsignedInt8, 2, 108)
self.assert_data(data2.GetUnsignedInt8, 3, 108)
self.assert_data(data2.GetUnsignedInt8, 4, 111)
self.assert_data(data2.GetUnsignedInt8, 5, 33)
data2.SetDataFromUInt64Array([1, 2, 3, 4, 5])
self.assert_data(data2.GetUnsignedInt64, 0, 1)
self.assert_data(data2.GetUnsignedInt64, 8, 2)
self.assert_data(data2.GetUnsignedInt64, 16, 3)
self.assert_data(data2.GetUnsignedInt64, 24, 4)
self.assert_data(data2.GetUnsignedInt64, 32, 5)
self.assertTrue(
data2.uint64[0] == 1,
'read_data_helper failure: set data2[0] = 1')
self.assertTrue(
data2.uint64[1] == 2,
'read_data_helper failure: set data2[1] = 2')
self.assertTrue(
data2.uint64[2] == 3,
'read_data_helper failure: set data2[2] = 3')
self.assertTrue(
data2.uint64[3] == 4,
'read_data_helper failure: set data2[3] = 4')
self.assertTrue(
data2.uint64[4] == 5,
'read_data_helper failure: set data2[4] = 5')
self.assertTrue(
data2.uint64[
0:2] == [
1,
2],
'read_data_helper failure: set data2[0:2] = [1,2]')
data2.SetDataFromSInt32Array([2, -2])
self.assert_data(data2.GetSignedInt32, 0, 2)
self.assert_data(data2.GetSignedInt32, 4, -2)
data2.SetDataFromSInt64Array([2, -2])
self.assert_data(data2.GetSignedInt64, 0, 2)
self.assert_data(data2.GetSignedInt64, 8, -2)
data2.SetDataFromUInt32Array([1, 2, 3, 4, 5])
self.assert_data(data2.GetUnsignedInt32, 0, 1)
self.assert_data(data2.GetUnsignedInt32, 4, 2)
self.assert_data(data2.GetUnsignedInt32, 8, 3)
self.assert_data(data2.GetUnsignedInt32, 12, 4)
self.assert_data(data2.GetUnsignedInt32, 16, 5)
self.assertTrue(
data2.uint32[0] == 1,
'read_data_helper failure: set 32-bit data2[0] = 1')
self.assertTrue(
data2.uint32[1] == 2,
'read_data_helper failure: set 32-bit data2[1] = 2')
self.assertTrue(
data2.uint32[2] == 3,
'read_data_helper failure: set 32-bit data2[2] = 3')
self.assertTrue(
data2.uint32[3] == 4,
'read_data_helper failure: set 32-bit data2[3] = 4')
self.assertTrue(
data2.uint32[4] == 5,
'read_data_helper failure: set 32-bit data2[4] = 5')
data2.SetDataFromDoubleArray([3.14, 6.28, 2.71])
self.assertTrue(fabs(data2.GetDouble(error, 0) - 3.14)
< 0.5, 'set double data2[0] = 3.14')
self.assertTrue(fabs(data2.GetDouble(error, 8) - 6.28)
< 0.5, 'set double data2[1] = 6.28')
self.assertTrue(fabs(data2.GetDouble(error, 16) - 2.71)
< 0.5, 'set double data2[2] = 2.71')
self.assertTrue(
fabs(
data2.double[0] -
3.14) < 0.5,
'read_data_helper failure: set double data2[0] = 3.14')
self.assertTrue(
fabs(
data2.double[1] -
6.28) < 0.5,
'read_data_helper failure: set double data2[1] = 6.28')
self.assertTrue(
fabs(
data2.double[2] -
2.71) < 0.5,
'read_data_helper failure: set double data2[2] = 2.71')
def assert_data(self, func, arg, expected):
""" Asserts func(SBError error, arg) == expected. """
error = lldb.SBError()
result = func(error, arg)
if not error.Success():
stream = lldb.SBStream()
error.GetDescription(stream)
self.assertTrue(
error.Success(), "%s(error, %s) did not succeed: %s" %
(func.__name__, arg, stream.GetData()))
self.assertTrue(
expected == result, "%s(error, %s) == %s != %s" %
(func.__name__, arg, result, expected))