def test_big_endian(self):
for be in [0, 1]:
packer = UVMPacker()
packer.big_endian = be
packer.pack_field_int(0x123, 32)
packer.pack_field_int(0xABC, 32)
packer.pack_field_int(0xFACE, 64)
packer.pack_field_int(0x77, 8)
packer.set_packed_size()
val1 = packer.unpack_field(32)
val2 = packer.unpack_field(32)
val3 = packer.unpack_field(64)
val4 = packer.unpack_field(8)
self.assertEqual(hex(val1), hex(0x123))
self.assertEqual(hex(val2), hex(0xABC))
self.assertEqual(hex(val3), hex(0xFACE))
self.assertEqual(hex(val4), hex(0x77))
def test_unpack_field(self):
num_ints = int(4096 / 32)
arr_ints = []
for i in range(num_ints):
arr_ints.append(1 + i**2)
packer = UVMPacker()
packer.big_endian = 0
packer.pack_ints(arr_ints, num_ints * 32)
packer.set_packed_size()
val_4096b = packer.unpack_field(4096)
# Verify the results
for i in range(num_ints):
value = (val_4096b >> (32 * i)) & MASK_INT
self.assertEqual(value, arr_ints[i])