def setup_once_vector(self):
if IS_BIG_ENDIAN:
# 2x 64 bit signed integer(1) BE
data = (b'\x00' * 7 + b'\x01') * 2
else:
# 2x 64 bit signed integer(1) LE
data = (b'\x01' + b'\x00' * 7) * 2
datablockwrapper = MachineDataBlockWrapper(self.cpu.asmmemmgr, [])
mem = datablockwrapper.malloc_aligned(len(data), alignment=16)
datablockwrapper.done()
addr = rffi.cast(rffi.CArrayPtr(lltype.Char), mem)
for i in range(len(data)):
addr[i] = data[i]
self.VEC_DOUBLE_WORD_ONES = mem
def setup_once_vector(self):
if IS_BIG_ENDIAN:
# 2x 64 bit signed integer(1) BE
data = (b'\x00' * 7 + b'\x01') * 2
else:
# 2x 64 bit signed integer(1) LE
data = (b'\x01' + b'\x00' * 7) * 2
datablockwrapper = MachineDataBlockWrapper(self.cpu.asmmemmgr, [])
mem = datablockwrapper.malloc_aligned(len(data), alignment=16)
datablockwrapper.done()
addr = rffi.cast(rffi.CArrayPtr(lltype.Char), mem)
for i in range(len(data)):
addr[i] = data[i]
self.VEC_DOUBLE_WORD_ONES = mem
def test_machinedatablock():
ops = []
class FakeMemMgr:
_addr = 1597
def open_malloc(self, minsize):
result = (self._addr, self._addr + 100)
ops.append(('malloc', minsize) + result)
self._addr += 200
return result
def open_free(self, frm, to):
ops.append(('free', frm, to))
return to - frm >= 8
#
allblocks = []
md = MachineDataBlockWrapper(FakeMemMgr(), allblocks)
p = md.malloc_aligned(26, 16)
assert p == 1600
assert ops == [('malloc', 26 + 15, 1597, 1697)]
del ops[:]
#
p = md.malloc_aligned(26, 16)
assert p == 1632
p = md.malloc_aligned(26, 16)
assert p == 1664
assert allblocks == []
assert ops == []
#
p = md.malloc_aligned(27, 16)
assert p == 1808
assert allblocks == [(1597, 1697)]
assert ops == [('free', 1690, 1697), ('malloc', 27 + 15, 1797, 1897)]
del ops[:]
#
md.done()
assert allblocks == [(1597, 1697), (1797, 1835)]
assert ops == [('free', 1835, 1897)]
def test_machinedatablock():
ops = []
class FakeMemMgr:
_addr = 1597
def open_malloc(self, minsize):
result = (self._addr, self._addr + 100)
ops.append(('malloc', minsize) + result)
self._addr += 200
return result
def open_free(self, frm, to):
ops.append(('free', frm, to))
return to - frm >= 8
#
allblocks = []
md = MachineDataBlockWrapper(FakeMemMgr(), allblocks)
p = md.malloc_aligned(26, 16)
assert p == 1600
assert ops == [('malloc', 26 + 15, 1597, 1697)]
del ops[:]
#
p = md.malloc_aligned(26, 16)
assert p == 1632
p = md.malloc_aligned(26, 16)
assert p == 1664
assert allblocks == []
assert ops == []
#
p = md.malloc_aligned(27, 16)
assert p == 1808
assert allblocks == [(1597, 1697)]
assert ops == [('free', 1690, 1697),
('malloc', 27 + 15, 1797, 1897)]
del ops[:]
#
md.done()
assert allblocks == [(1597, 1697), (1797, 1835)]
assert ops == [('free', 1835, 1897)]