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# test importing of .mpy files with native code (x64 only)
import sys, uio
try:
uio.IOBase
import uos
uos.mount
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
if not (sys.platform == 'linux' and sys.maxsize > 2 ** 32):
print("SKIP")
raise SystemExit
class UserFile(uio.IOBase):
def __init__(self, data):
self.data = data
self.pos = 0
def read(self):
return self.data
def readinto(self, buf):
n = 0
while n < len(buf) and self.pos < len(self.data):
buf[n] = self.data[self.pos]
n += 1
self.pos += 1
return n
def ioctl(self, req, arg):
return 0
class UserFS:
def __init__(self, files):
self.files = files
def mount(self, readonly, mksfs):
pass
def umount(self):
pass
def stat(self, path):
if path in self.files:
return (32768, 0, 0, 0, 0, 0, 0, 0, 0, 0)
raise OSError
def open(self, path, mode):
return UserFile(self.files[path])
# these are the test .mpy files
user_files = {
# bad architecture
'/mod0.mpy': b'M\x05\xff\x00\x10',
# test loading of viper and asm
'/mod1.mpy': (
b'M\x05\x0b\x1f\x20' # header
b'\x20' # n bytes, bytecode
b'\x00\x08\x02m\x02m' # prelude
b'\x51' # LOAD_CONST_NONE
b'\x63' # RETURN_VALUE
b'\x00\x02' # n_obj, n_raw_code
b'\x22' # n bytes, viper code
b'\x00\x00\x00\x00\x00\x00' # dummy machine code
b'\x00\x00' # qstr0
b'\x01\x0c\x0aprint' # n_qstr, qstr0
b'\x00\x00\x00' # scope_flags, n_obj, n_raw_code
b'\x23' # n bytes, asm code
b'\x00\x00\x00\x00\x00\x00\x00\x00' # dummy machine code
b'\x00\x00\x00' # scope_flags, n_pos_args, type_sig
),
# test loading viper with additional scope flags and relocation
'/mod2.mpy': (
b'M\x05\x0b\x1f\x20' # header
b'\x20' # n bytes, bytecode
b'\x00\x08\x02m\x02m' # prelude
b'\x51' # LOAD_CONST_NONE
b'\x63' # RETURN_VALUE
b'\x00\x01' # n_obj, n_raw_code
b'\x12' # n bytes(=4), viper code
b'\x00\x00\x00\x00' # dummy machine code
b'\x00' # n_qstr
b'\x70' # scope_flags: VIPERBSS | VIPERRODATA | VIPERRELOC
b'\x00\x00' # n_obj, n_raw_code
b'\x06rodata' # rodata, 6 bytes
b'\x04' # bss, 4 bytes
b'\x03\x01\x00' # dummy relocation of rodata
),
}
# create and mount a user filesystem
uos.mount(UserFS(user_files), '/userfs')
sys.path.append('/userfs')
# import .mpy files from the user filesystem
for i in range(len(user_files)):
mod = 'mod%u' % i
try:
__import__(mod)
print(mod, 'OK')
except ValueError as er:
print(mod, 'ValueError', er)
# unmount and undo path addition
uos.umount('/userfs')
sys.path.pop()
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