circuitpython/tests/import/mpy_native.py

126 lines
3.3 KiB
Python

# 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"C\x05\xff\x00\x10",
# test loading of viper and asm
"/mod1.mpy": (
b"C\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 truncated data
"/mod2.mpy": (
b"C\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
),
# test loading viper with additional scope flags and relocation
"/mod3.mpy": (
b"C\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"\x81\x60" # scope_flags: VIPERBSS | VIPERRODATA | VIPERRELOC (0xe0 encoded over two bytes)
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)
except RuntimeError as er:
print(mod, "RuntimeError", er)
# unmount and undo path addition
uos.umount("/userfs")
sys.path.pop()