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circuitpython/tools/mpy-tool.py
Damien George 23f0691fdd py/persistentcode: Make .mpy more compact with qstr directly in prelude. 
Instead of encoding 4 zero bytes as placeholders for the simple_name and
source_file qstrs, and storing the qstrs after the bytecode, store the
qstrs at the location of these 4 bytes.  This saves 4 bytes per bytecode
function stored in a .mpy file (for example lcd160cr.mpy drops by 232
bytes, 4x 58 functions).  And resulting code size is slightly reduced on
ports that use this feature.
2019-10-15 16:56:27 +11:00

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#!/usr/bin/env python3
#
# This file is part of the MicroPython project, http://micropython.org/
#
# The MIT License (MIT)
#
# Copyright (c) 2016-2019 Damien P. George
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# Python 2/3 compatibility code
from __future__ import print_function
import platform
if platform.python_version_tuple()[0] == '2':
str_cons = lambda val, enc=None: val
bytes_cons = lambda val, enc=None: bytearray(val)
is_str_type = lambda o: type(o) is str
is_bytes_type = lambda o: type(o) is bytearray
is_int_type = lambda o: type(o) is int or type(o) is long
else:
str_cons = str
bytes_cons = bytes
is_str_type = lambda o: type(o) is str
is_bytes_type = lambda o: type(o) is bytes
is_int_type = lambda o: type(o) is int
# end compatibility code
import sys
import struct
from collections import namedtuple
sys.path.append(sys.path[0] + '/../py')
import makeqstrdata as qstrutil
class FreezeError(Exception):
def __init__(self, rawcode, msg):
self.rawcode = rawcode
self.msg = msg
def __str__(self):
return 'error while freezing %s: %s' % (self.rawcode.source_file, self.msg)
class Config:
MPY_VERSION = 5
MICROPY_LONGINT_IMPL_NONE = 0
MICROPY_LONGINT_IMPL_LONGLONG = 1
MICROPY_LONGINT_IMPL_MPZ = 2
config = Config()
class QStrType:
def __init__(self, str):
self.str = str
self.qstr_esc = qstrutil.qstr_escape(self.str)
self.qstr_id = 'MP_QSTR_' + self.qstr_esc
# Initialise global list of qstrs with static qstrs
global_qstrs = [None] # MP_QSTRnull should never be referenced
for n in qstrutil.static_qstr_list:
global_qstrs.append(QStrType(n))
class QStrWindow:
def __init__(self, size):
self.window = []
self.size = size
def push(self, val):
self.window = [val] + self.window[:self.size - 1]
def access(self, idx):
val = self.window[idx]
self.window = [val] + self.window[:idx] + self.window[idx + 1:]
return val
MP_CODE_BYTECODE = 2
MP_CODE_NATIVE_PY = 3
MP_CODE_NATIVE_VIPER = 4
MP_CODE_NATIVE_ASM = 5
MP_NATIVE_ARCH_NONE = 0
MP_NATIVE_ARCH_X86 = 1
MP_NATIVE_ARCH_X64 = 2
MP_NATIVE_ARCH_ARMV6 = 3
MP_NATIVE_ARCH_ARMV6M = 4
MP_NATIVE_ARCH_ARMV7M = 5
MP_NATIVE_ARCH_ARMV7EM = 6
MP_NATIVE_ARCH_ARMV7EMSP = 7
MP_NATIVE_ARCH_ARMV7EMDP = 8
MP_NATIVE_ARCH_XTENSA = 9
MP_NATIVE_ARCH_XTENSAWIN = 10
MP_BC_MASK_EXTRA_BYTE = 0x9e
MP_BC_FORMAT_BYTE = 0
MP_BC_FORMAT_QSTR = 1
MP_BC_FORMAT_VAR_UINT = 2
MP_BC_FORMAT_OFFSET = 3
# extra byte if caching enabled:
MP_BC_LOAD_NAME = 0x11
MP_BC_LOAD_GLOBAL = 0x12
MP_BC_LOAD_ATTR = 0x13
MP_BC_STORE_ATTR = 0x18
# this function mirrors that in py/bc.c
def mp_opcode_format(bytecode, ip, count_var_uint):
opcode = bytecode[ip]
ip_start = ip
f = ((0x000003a4 >> (2 * ((opcode) >> 4))) & 3)
if f == MP_BC_FORMAT_QSTR:
if config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE:
if (opcode == MP_BC_LOAD_NAME
or opcode == MP_BC_LOAD_GLOBAL
or opcode == MP_BC_LOAD_ATTR
or opcode == MP_BC_STORE_ATTR):
ip += 1
ip += 3
else:
extra_byte = (opcode & MP_BC_MASK_EXTRA_BYTE) == 0
ip += 1
if f == MP_BC_FORMAT_VAR_UINT:
if count_var_uint:
while bytecode[ip] & 0x80 != 0:
ip += 1
ip += 1
elif f == MP_BC_FORMAT_OFFSET:
ip += 2
ip += extra_byte
return f, ip - ip_start
def read_prelude_sig(read_byte):
z = read_byte()
# xSSSSEAA
S = (z >> 3) & 0xf
E = (z >> 2) & 0x1
F = 0
A = z & 0x3
K = 0
D = 0
n = 0
while z & 0x80:
z = read_byte()
# xFSSKAED
S |= (z & 0x30) << (2 * n)
E |= (z & 0x02) << n
F |= ((z & 0x40) >> 6) << n
A |= (z & 0x4) << n
K |= ((z & 0x08) >> 3) << n
D |= (z & 0x1) << n
n += 1
S += 1
return S, E, F, A, K, D
def read_prelude_size(read_byte):
I = 0
C = 0
n = 0
while True:
z = read_byte()
# xIIIIIIC
I |= ((z & 0x7e) >> 1) << (6 * n)
C |= (z & 1) << n
if not (z & 0x80):
break
n += 1
return I, C
def extract_prelude(bytecode, ip):
def local_read_byte():
b = bytecode[ip_ref[0]]
ip_ref[0] += 1
return b
ip_ref = [ip] # to close over ip in Python 2 and 3
n_state, n_exc_stack, scope_flags, n_pos_args, n_kwonly_args, n_def_pos_args = read_prelude_sig(local_read_byte)
n_info, n_cell = read_prelude_size(local_read_byte)
ip = ip_ref[0]
ip2 = ip
ip = ip2 + n_info + n_cell
# ip now points to first opcode
# ip2 points to simple_name qstr
return ip, ip2, (n_state, n_exc_stack, scope_flags, n_pos_args, n_kwonly_args, n_def_pos_args)
class MPFunTable:
pass
class RawCode(object):
# a set of all escaped names, to make sure they are unique
escaped_names = set()
# convert code kind number to string
code_kind_str = {
MP_CODE_BYTECODE: 'MP_CODE_BYTECODE',
MP_CODE_NATIVE_PY: 'MP_CODE_NATIVE_PY',
MP_CODE_NATIVE_VIPER: 'MP_CODE_NATIVE_VIPER',
MP_CODE_NATIVE_ASM: 'MP_CODE_NATIVE_ASM',
}
def __init__(self, code_kind, bytecode, prelude_offset, qstrs, objs, raw_codes):
# set core variables
self.code_kind = code_kind
self.bytecode = bytecode
self.prelude_offset = prelude_offset
self.qstrs = qstrs
self.objs = objs
self.raw_codes = raw_codes
if self.prelude_offset is None:
# no prelude, assign a dummy simple_name
self.prelude_offset = 0
self.simple_name = global_qstrs[1]
else:
# extract prelude
self.ip, self.ip2, self.prelude = extract_prelude(self.bytecode, self.prelude_offset)
self.simple_name = self._unpack_qstr(self.ip2)
self.source_file = self._unpack_qstr(self.ip2 + 2)
def _unpack_qstr(self, ip):
qst = self.bytecode[ip] | self.bytecode[ip + 1] << 8
return global_qstrs[qst]
def dump(self):
# dump children first
for rc in self.raw_codes:
rc.freeze('')
# TODO
def freeze_children(self, parent_name):
self.escaped_name = parent_name + self.simple_name.qstr_esc
# make sure the escaped name is unique
i = 2
while self.escaped_name in RawCode.escaped_names:
self.escaped_name = parent_name + self.simple_name.qstr_esc + str(i)
i += 1
RawCode.escaped_names.add(self.escaped_name)
# emit children first
for rc in self.raw_codes:
rc.freeze(self.escaped_name + '_')
def freeze_constants(self):
# generate constant objects
for i, obj in enumerate(self.objs):
obj_name = 'const_obj_%s_%u' % (self.escaped_name, i)
if obj is MPFunTable:
pass
elif obj is Ellipsis:
print('#define %s mp_const_ellipsis_obj' % obj_name)
elif is_str_type(obj) or is_bytes_type(obj):
if is_str_type(obj):
obj = bytes_cons(obj, 'utf8')
obj_type = 'mp_type_str'
else:
obj_type = 'mp_type_bytes'
print('STATIC const mp_obj_str_t %s = {{&%s}, %u, %u, (const byte*)"%s"};'
% (obj_name, obj_type, qstrutil.compute_hash(obj, config.MICROPY_QSTR_BYTES_IN_HASH),
len(obj), ''.join(('\\x%02x' % b) for b in obj)))
elif is_int_type(obj):
if config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_NONE:
# TODO check if we can actually fit this long-int into a small-int
raise FreezeError(self, 'target does not support long int')
elif config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_LONGLONG:
# TODO
raise FreezeError(self, 'freezing int to long-long is not implemented')
elif config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_MPZ:
neg = 0
if obj < 0:
obj = -obj
neg = 1
bits_per_dig = config.MPZ_DIG_SIZE
digs = []
z = obj
while z:
digs.append(z & ((1 << bits_per_dig) - 1))
z >>= bits_per_dig
ndigs = len(digs)
digs = ','.join(('%#x' % d) for d in digs)
print('STATIC const mp_obj_int_t %s = {{&mp_type_int}, '
'{.neg=%u, .fixed_dig=1, .alloc=%u, .len=%u, .dig=(uint%u_t*)(const uint%u_t[]){%s}}};'
% (obj_name, neg, ndigs, ndigs, bits_per_dig, bits_per_dig, digs))
elif type(obj) is float:
print('#if MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_A || MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_B')
print('STATIC const mp_obj_float_t %s = {{&mp_type_float}, %.16g};'
% (obj_name, obj))
print('#endif')
elif type(obj) is complex:
print('STATIC const mp_obj_complex_t %s = {{&mp_type_complex}, %.16g, %.16g};'
% (obj_name, obj.real, obj.imag))
else:
raise FreezeError(self, 'freezing of object %r is not implemented' % (obj,))
# generate constant table, if it has any entries
const_table_len = len(self.qstrs) + len(self.objs) + len(self.raw_codes)
if const_table_len:
print('STATIC const mp_rom_obj_t const_table_data_%s[%u] = {'
% (self.escaped_name, const_table_len))
for qst in self.qstrs:
print(' MP_ROM_QSTR(%s),' % global_qstrs[qst].qstr_id)
for i in range(len(self.objs)):
if self.objs[i] is MPFunTable:
print(' mp_fun_table,')
elif type(self.objs[i]) is float:
print('#if MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_A || MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_B')
print(' MP_ROM_PTR(&const_obj_%s_%u),' % (self.escaped_name, i))
print('#elif MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_C')
n = struct.unpack('<I', struct.pack('<f', self.objs[i]))[0]
n = ((n & ~0x3) | 2) + 0x80800000
print(' (mp_rom_obj_t)(0x%08x),' % (n,))
print('#elif MICROPY_OBJ_REPR == MICROPY_OBJ_REPR_D')
n = struct.unpack('<Q', struct.pack('<d', self.objs[i]))[0]
n += 0x8004000000000000
print(' (mp_rom_obj_t)(0x%016x),' % (n,))
print('#endif')
else:
print(' MP_ROM_PTR(&const_obj_%s_%u),' % (self.escaped_name, i))
for rc in self.raw_codes:
print(' MP_ROM_PTR(&raw_code_%s),' % rc.escaped_name)
print('};')
def freeze_module(self, qstr_links=(), type_sig=0):
# generate module
if self.simple_name.str != '<module>':
print('STATIC ', end='')
print('const mp_raw_code_t raw_code_%s = {' % self.escaped_name)
print(' .kind = %s,' % RawCode.code_kind_str[self.code_kind])
print(' .scope_flags = 0x%02x,' % self.prelude[2])
print(' .n_pos_args = %u,' % self.prelude[3])
print(' .fun_data = fun_data_%s,' % self.escaped_name)
if len(self.qstrs) + len(self.objs) + len(self.raw_codes):
print(' .const_table = (mp_uint_t*)const_table_data_%s,' % self.escaped_name)
else:
print(' .const_table = NULL,')
print(' #if MICROPY_PERSISTENT_CODE_SAVE')
print(' .fun_data_len = %u,' % len(self.bytecode))
print(' .n_obj = %u,' % len(self.objs))
print(' .n_raw_code = %u,' % len(self.raw_codes))
if self.code_kind == MP_CODE_BYTECODE:
print(' #if MICROPY_PY_SYS_SETTRACE')
print(' .prelude = {')
print(' .n_state = %u,' % self.prelude[0])
print(' .n_exc_stack = %u,' % self.prelude[1])
print(' .scope_flags = %u,' % self.prelude[2])
print(' .n_pos_args = %u,' % self.prelude[3])
print(' .n_kwonly_args = %u,' % self.prelude[4])
print(' .n_def_pos_args = %u,' % self.prelude[5])
print(' .qstr_block_name = %s,' % self.simple_name.qstr_id)
print(' .qstr_source_file = %s,' % self.source_file.qstr_id)
print(' .line_info = fun_data_%s + %u,' % (self.escaped_name, 0)) # TODO
print(' .opcodes = fun_data_%s + %u,' % (self.escaped_name, self.ip))
print(' },')
print(' .line_of_definition = %u,' % 0) # TODO
print(' #endif')
print(' #if MICROPY_EMIT_MACHINE_CODE')
print(' .prelude_offset = %u,' % self.prelude_offset)
print(' .n_qstr = %u,' % len(qstr_links))
print(' .qstr_link = NULL,') # TODO
print(' #endif')
print(' #endif')
print(' #if MICROPY_EMIT_MACHINE_CODE')
print(' .type_sig = %u,' % type_sig)
print(' #endif')
print('};')
class RawCodeBytecode(RawCode):
def __init__(self, bytecode, qstrs, objs, raw_codes):
super(RawCodeBytecode, self).__init__(MP_CODE_BYTECODE, bytecode, 0, qstrs, objs, raw_codes)
def freeze(self, parent_name):
self.freeze_children(parent_name)
# generate bytecode data
print()
print('// frozen bytecode for file %s, scope %s%s' % (self.source_file.str, parent_name, self.simple_name.str))
print('STATIC ', end='')
if not config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE:
print('const ', end='')
print('byte fun_data_%s[%u] = {' % (self.escaped_name, len(self.bytecode)))
print(' ', end='')
for i in range(self.ip2):
print(' 0x%02x,' % self.bytecode[i], end='')
print()
print(' ', self.simple_name.qstr_id, '& 0xff,', self.simple_name.qstr_id, '>> 8,')
print(' ', self.source_file.qstr_id, '& 0xff,', self.source_file.qstr_id, '>> 8,')
print(' ', end='')
for i in range(self.ip2 + 4, self.ip):
print(' 0x%02x,' % self.bytecode[i], end='')
print()
ip = self.ip
while ip < len(self.bytecode):
f, sz = mp_opcode_format(self.bytecode, ip, True)
if f == 1:
qst = self._unpack_qstr(ip + 1).qstr_id
extra = '' if sz == 3 else ' 0x%02x,' % self.bytecode[ip + 3]
print(' ', '0x%02x,' % self.bytecode[ip], qst, '& 0xff,', qst, '>> 8,', extra)
else:
print(' ', ''.join('0x%02x, ' % self.bytecode[ip + i] for i in range(sz)))
ip += sz
print('};')
self.freeze_constants()
self.freeze_module()
class RawCodeNative(RawCode):
def __init__(self, code_kind, fun_data, prelude_offset, prelude, qstr_links, qstrs, objs, raw_codes, type_sig):
super(RawCodeNative, self).__init__(code_kind, fun_data, prelude_offset, qstrs, objs, raw_codes)
self.prelude = prelude
self.qstr_links = qstr_links
self.type_sig = type_sig
if config.native_arch in (MP_NATIVE_ARCH_X86, MP_NATIVE_ARCH_X64):
self.fun_data_attributes = '__attribute__((section(".text,\\"ax\\",@progbits # ")))'
else:
self.fun_data_attributes = '__attribute__((section(".text,\\"ax\\",%progbits @ ")))'
# Allow single-byte alignment by default for x86/x64/xtensa, but on ARM we need halfword- or word- alignment.
if config.native_arch == MP_NATIVE_ARCH_ARMV6:
# ARMV6 -- four byte align.
self.fun_data_attributes += ' __attribute__ ((aligned (4)))'
elif MP_NATIVE_ARCH_ARMV6M <= config.native_arch <= MP_NATIVE_ARCH_ARMV7EMDP:
# ARMVxxM -- two byte align.
self.fun_data_attributes += ' __attribute__ ((aligned (2)))'
def _asm_thumb_rewrite_mov(self, pc, val):
print(' (%u & 0xf0) | (%s >> 12),' % (self.bytecode[pc], val), end='')
print(' (%u & 0xfb) | (%s >> 9 & 0x04),' % (self.bytecode[pc + 1], val), end='')
print(' (%s & 0xff),' % (val,), end='')
print(' (%u & 0x07) | (%s >> 4 & 0x70),' % (self.bytecode[pc + 3], val))
def _link_qstr(self, pc, kind, qst):
if kind == 0:
# Generic 16-bit link
print(' %s & 0xff, %s >> 8,' % (qst, qst))
return 2
else:
# Architecture-specific link
is_obj = kind == 2
if is_obj:
qst = '((uintptr_t)MP_OBJ_NEW_QSTR(%s))' % qst
if config.native_arch in (MP_NATIVE_ARCH_X86, MP_NATIVE_ARCH_X64):
print(' %s & 0xff, %s >> 8, 0, 0,' % (qst, qst))
return 4
elif MP_NATIVE_ARCH_ARMV6M <= config.native_arch <= MP_NATIVE_ARCH_ARMV7EMDP:
if is_obj:
# qstr object, movw and movt
self._asm_thumb_rewrite_mov(pc, qst)
self._asm_thumb_rewrite_mov(pc + 4, '(%s >> 16)' % qst)
return 8
else:
# qstr number, movw instruction
self._asm_thumb_rewrite_mov(pc, qst)
return 4
else:
assert 0
def freeze(self, parent_name):
self.freeze_children(parent_name)
# generate native code data
print()
if self.code_kind == MP_CODE_NATIVE_PY:
print('// frozen native code for file %s, scope %s%s' % (self.source_file.str, parent_name, self.simple_name.str))
elif self.code_kind == MP_CODE_NATIVE_VIPER:
print('// frozen viper code for scope %s' % (parent_name,))
else:
print('// frozen assembler code for scope %s' % (parent_name,))
print('STATIC const byte fun_data_%s[%u] %s = {' % (self.escaped_name, len(self.bytecode), self.fun_data_attributes))
if self.code_kind == MP_CODE_NATIVE_PY:
i_top = self.prelude_offset
else:
i_top = len(self.bytecode)
i = 0
qi = 0
while i < i_top:
if qi < len(self.qstr_links) and i == self.qstr_links[qi][0]:
# link qstr
qi_off, qi_kind, qi_val = self.qstr_links[qi]
qst = global_qstrs[qi_val].qstr_id
i += self._link_qstr(i, qi_kind, qst)
qi += 1
else:
# copy machine code (max 16 bytes)
i16 = min(i + 16, i_top)
if qi < len(self.qstr_links):
i16 = min(i16, self.qstr_links[qi][0])
print(' ', end='')
for ii in range(i, i16):
print(' 0x%02x,' % self.bytecode[ii], end='')
print()
i = i16
if self.code_kind == MP_CODE_NATIVE_PY:
print(' ', end='')
for i in range(self.prelude_offset, self.ip2):
print(' 0x%02x,' % self.bytecode[i], end='')
print()
print(' ', self.simple_name.qstr_id, '& 0xff,', self.simple_name.qstr_id, '>> 8,')
print(' ', self.source_file.qstr_id, '& 0xff,', self.source_file.qstr_id, '>> 8,')
print(' ', end='')
for i in range(self.ip2 + 4, self.ip):
print(' 0x%02x,' % self.bytecode[i], end='')
print()
print('};')
self.freeze_constants()
self.freeze_module(self.qstr_links, self.type_sig)
class BytecodeBuffer:
def __init__(self, size):
self.buf = bytearray(size)
self.idx = 0
def is_full(self):
return self.idx == len(self.buf)
def append(self, b):
self.buf[self.idx] = b
self.idx += 1
def read_byte(f, out=None):
b = bytes_cons(f.read(1))[0]
if out is not None:
out.append(b)
return b
def read_uint(f, out=None):
i = 0
while True:
b = read_byte(f, out)
i = (i << 7) | (b & 0x7f)
if b & 0x80 == 0:
break
return i
def read_qstr(f, qstr_win):
ln = read_uint(f)
if ln == 0:
# static qstr
return bytes_cons(f.read(1))[0]
if ln & 1:
# qstr in table
return qstr_win.access(ln >> 1)
ln >>= 1
data = str_cons(f.read(ln), 'utf8')
global_qstrs.append(QStrType(data))
qstr_win.push(len(global_qstrs) - 1)
return len(global_qstrs) - 1
def read_obj(f):
obj_type = f.read(1)
if obj_type == b'e':
return Ellipsis
else:
buf = f.read(read_uint(f))
if obj_type == b's':
return str_cons(buf, 'utf8')
elif obj_type == b'b':
return bytes_cons(buf)
elif obj_type == b'i':
return int(str_cons(buf, 'ascii'), 10)
elif obj_type == b'f':
return float(str_cons(buf, 'ascii'))
elif obj_type == b'c':
return complex(str_cons(buf, 'ascii'))
else:
assert 0
def read_prelude(f, bytecode, qstr_win):
n_state, n_exc_stack, scope_flags, n_pos_args, n_kwonly_args, n_def_pos_args = read_prelude_sig(lambda: read_byte(f, bytecode))
n_info, n_cell = read_prelude_size(lambda: read_byte(f, bytecode))
read_qstr_and_pack(f, bytecode, qstr_win) # simple_name
read_qstr_and_pack(f, bytecode, qstr_win) # source_file
for _ in range(n_info - 4 + n_cell):
read_byte(f, bytecode)
return n_state, n_exc_stack, scope_flags, n_pos_args, n_kwonly_args, n_def_pos_args
def read_qstr_and_pack(f, bytecode, qstr_win):
qst = read_qstr(f, qstr_win)
bytecode.append(qst & 0xff)
bytecode.append(qst >> 8)
def read_bytecode(file, bytecode, qstr_win):
while not bytecode.is_full():
op = read_byte(file, bytecode)
f, sz = mp_opcode_format(bytecode.buf, bytecode.idx - 1, False)
sz -= 1
if f == MP_BC_FORMAT_QSTR:
read_qstr_and_pack(file, bytecode, qstr_win)
sz -= 2
elif f == MP_BC_FORMAT_VAR_UINT:
while read_byte(file, bytecode) & 0x80:
pass
for _ in range(sz):
read_byte(file, bytecode)
def read_raw_code(f, qstr_win):
kind_len = read_uint(f)
kind = (kind_len & 3) + MP_CODE_BYTECODE
fun_data_len = kind_len >> 2
fun_data = BytecodeBuffer(fun_data_len)
if kind == MP_CODE_BYTECODE:
prelude = read_prelude(f, fun_data, qstr_win)
read_bytecode(f, fun_data, qstr_win)
else:
fun_data.buf[:] = f.read(fun_data_len)
qstr_links = []
if kind in (MP_CODE_NATIVE_PY, MP_CODE_NATIVE_VIPER):
# load qstr link table
n_qstr_link = read_uint(f)
for _ in range(n_qstr_link):
off = read_uint(f)
qst = read_qstr(f, qstr_win)
qstr_links.append((off >> 2, off & 3, qst))
type_sig = 0
if kind == MP_CODE_NATIVE_PY:
prelude_offset = read_uint(f)
_, name_idx, prelude = extract_prelude(fun_data.buf, prelude_offset)
fun_data.idx = name_idx # rewind to where qstrs are in prelude
read_qstr_and_pack(f, fun_data, qstr_win) # simple_name
read_qstr_and_pack(f, fun_data, qstr_win) # source_file
else:
prelude_offset = None
scope_flags = read_uint(f)
n_pos_args = 0
if kind == MP_CODE_NATIVE_ASM:
n_pos_args = read_uint(f)
type_sig = read_uint(f)
prelude = (None, None, scope_flags, n_pos_args, 0)
qstrs = []
objs = []
raw_codes = []
if kind != MP_CODE_NATIVE_ASM:
# load constant table
n_obj = read_uint(f)
n_raw_code = read_uint(f)
qstrs = [read_qstr(f, qstr_win) for _ in range(prelude[3] + prelude[4])]
if kind != MP_CODE_BYTECODE:
objs.append(MPFunTable)
objs.extend([read_obj(f) for _ in range(n_obj)])
raw_codes = [read_raw_code(f, qstr_win) for _ in range(n_raw_code)]
if kind == MP_CODE_BYTECODE:
return RawCodeBytecode(fun_data.buf, qstrs, objs, raw_codes)
else:
return RawCodeNative(kind, fun_data.buf, prelude_offset, prelude, qstr_links, qstrs, objs, raw_codes, type_sig)
def read_mpy(filename):
with open(filename, 'rb') as f:
header = bytes_cons(f.read(4))
if header[0] != ord('M'):
raise Exception('not a valid .mpy file')
if header[1] != config.MPY_VERSION:
raise Exception('incompatible .mpy version')
feature_byte = header[2]
qw_size = read_uint(f)
config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE = (feature_byte & 1) != 0
config.MICROPY_PY_BUILTINS_STR_UNICODE = (feature_byte & 2) != 0
mpy_native_arch = feature_byte >> 2
if mpy_native_arch != MP_NATIVE_ARCH_NONE:
if config.native_arch == MP_NATIVE_ARCH_NONE:
config.native_arch = mpy_native_arch
elif config.native_arch != mpy_native_arch:
raise Exception('native architecture mismatch')
config.mp_small_int_bits = header[3]
qstr_win = QStrWindow(qw_size)
return read_raw_code(f, qstr_win)
def dump_mpy(raw_codes):
for rc in raw_codes:
rc.dump()
def freeze_mpy(base_qstrs, raw_codes):
# add to qstrs
new = {}
for q in global_qstrs:
# don't add duplicates
if q is None or q.qstr_esc in base_qstrs or q.qstr_esc in new:
continue
new[q.qstr_esc] = (len(new), q.qstr_esc, q.str)
new = sorted(new.values(), key=lambda x: x[0])
print('#include "py/mpconfig.h"')
print('#include "py/objint.h"')
print('#include "py/objstr.h"')
print('#include "py/emitglue.h"')
print()
print('#if MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE != %u' % config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE)
print('#error "incompatible MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE"')
print('#endif')
print()
print('#if MICROPY_LONGINT_IMPL != %u' % config.MICROPY_LONGINT_IMPL)
print('#error "incompatible MICROPY_LONGINT_IMPL"')
print('#endif')
print()
if config.MICROPY_LONGINT_IMPL == config.MICROPY_LONGINT_IMPL_MPZ:
print('#if MPZ_DIG_SIZE != %u' % config.MPZ_DIG_SIZE)
print('#error "incompatible MPZ_DIG_SIZE"')
print('#endif')
print()
print('#if MICROPY_PY_BUILTINS_FLOAT')
print('typedef struct _mp_obj_float_t {')
print(' mp_obj_base_t base;')
print(' mp_float_t value;')
print('} mp_obj_float_t;')
print('#endif')
print()
print('#if MICROPY_PY_BUILTINS_COMPLEX')
print('typedef struct _mp_obj_complex_t {')
print(' mp_obj_base_t base;')
print(' mp_float_t real;')
print(' mp_float_t imag;')
print('} mp_obj_complex_t;')
print('#endif')
print()
if len(new) > 0:
print('enum {')
for i in range(len(new)):
if i == 0:
print(' MP_QSTR_%s = MP_QSTRnumber_of,' % new[i][1])
else:
print(' MP_QSTR_%s,' % new[i][1])
print('};')
# As in qstr.c, set so that the first dynamically allocated pool is twice this size; must be <= the len
qstr_pool_alloc = min(len(new), 10)
print()
print('extern const qstr_pool_t mp_qstr_const_pool;');
print('const qstr_pool_t mp_qstr_frozen_const_pool = {')
print(' (qstr_pool_t*)&mp_qstr_const_pool, // previous pool')
print(' MP_QSTRnumber_of, // previous pool size')
print(' %u, // allocated entries' % qstr_pool_alloc)
print(' %u, // used entries' % len(new))
print(' {')
for _, _, qstr in new:
print(' %s,'
% qstrutil.make_bytes(config.MICROPY_QSTR_BYTES_IN_LEN, config.MICROPY_QSTR_BYTES_IN_HASH, qstr))
print(' },')
print('};')
for rc in raw_codes:
rc.freeze(rc.source_file.str.replace('/', '_')[:-3] + '_')
print()
print('const char mp_frozen_mpy_names[] = {')
for rc in raw_codes:
module_name = rc.source_file.str
print('"%s\\0"' % module_name)
print('"\\0"};')
print('const mp_raw_code_t *const mp_frozen_mpy_content[] = {')
for rc in raw_codes:
print(' &raw_code_%s,' % rc.escaped_name)
print('};')
def main():
import argparse
cmd_parser = argparse.ArgumentParser(description='A tool to work with MicroPython .mpy files.')
cmd_parser.add_argument('-d', '--dump', action='store_true',
help='dump contents of files')
cmd_parser.add_argument('-f', '--freeze', action='store_true',
help='freeze files')
cmd_parser.add_argument('-q', '--qstr-header',
help='qstr header file to freeze against')
cmd_parser.add_argument('-mlongint-impl', choices=['none', 'longlong', 'mpz'], default='mpz',
help='long-int implementation used by target (default mpz)')
cmd_parser.add_argument('-mmpz-dig-size', metavar='N', type=int, default=16,
help='mpz digit size used by target (default 16)')
cmd_parser.add_argument('files', nargs='+',
help='input .mpy files')
args = cmd_parser.parse_args()
# set config values relevant to target machine
config.MICROPY_LONGINT_IMPL = {
'none':config.MICROPY_LONGINT_IMPL_NONE,
'longlong':config.MICROPY_LONGINT_IMPL_LONGLONG,
'mpz':config.MICROPY_LONGINT_IMPL_MPZ,
}[args.mlongint_impl]
config.MPZ_DIG_SIZE = args.mmpz_dig_size
config.native_arch = MP_NATIVE_ARCH_NONE
# set config values for qstrs, and get the existing base set of qstrs
if args.qstr_header:
qcfgs, base_qstrs = qstrutil.parse_input_headers([args.qstr_header])
config.MICROPY_QSTR_BYTES_IN_LEN = int(qcfgs['BYTES_IN_LEN'])
config.MICROPY_QSTR_BYTES_IN_HASH = int(qcfgs['BYTES_IN_HASH'])
else:
config.MICROPY_QSTR_BYTES_IN_LEN = 1
config.MICROPY_QSTR_BYTES_IN_HASH = 1
base_qstrs = {}
raw_codes = [read_mpy(file) for file in args.files]
if args.dump:
dump_mpy(raw_codes)
elif args.freeze:
try:
freeze_mpy(base_qstrs, raw_codes)
except FreezeError as er:
print(er, file=sys.stderr)
sys.exit(1)
if __name__ == '__main__':
main()
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