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tools/mpy-tool.py: Add support for freezing native code. 

This adds support to freeze .mpy files that contain native code blocks.
This commit is contained in:
Damien George 2019-02-21 15:18:59 +11:00
parent 1396a026be
commit ea3c80a514
1 changed files with 246 additions and 55 deletions
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287
tools/mpy-tool.py
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@ -87,6 +87,22 @@ class QStrWindow:
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_OPCODE_BYTE = 0
MP_OPCODE_QSTR = 1
MP_OPCODE_VAR_UINT = 2
@ -224,8 +240,7 @@ def decode_uint(bytecode, ip):
break
return ip, unum
def extract_prelude(bytecode):
ip = 0
def extract_prelude(bytecode, ip):
ip, n_state = decode_uint(bytecode, ip)
ip, n_exc_stack = decode_uint(bytecode, ip)
scope_flags = bytecode[ip]; ip += 1
@ -241,19 +256,37 @@ def extract_prelude(bytecode):
# 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, code_info_size)
class MPFunTable:
pass
class RawCode:
# a set of all escaped names, to make sure they are unique
escaped_names = set()
def __init__(self, bytecode, qstrs, objs, raw_codes):
# 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.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)
@ -267,7 +300,7 @@ class RawCode:
rc.freeze('')
# TODO
def freeze(self, parent_name):
def freeze_children(self, parent_name):
self.escaped_name = parent_name + self.simple_name.qstr_esc
# make sure the escaped name is unique
@ -281,39 +314,13 @@ class RawCode:
for rc in self.raw_codes:
rc.freeze(self.escaped_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 bytecode_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('};')
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 Ellipsis:
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):
@ -366,7 +373,9 @@ class RawCode:
for qst in self.qstrs:
print(' MP_ROM_QSTR(%s),' % global_qstrs[qst].qstr_id)
for i in range(len(self.objs)):
if type(self.objs[i]) is float:
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')
@ -384,15 +393,16 @@ class RawCode:
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 = MP_CODE_BYTECODE,')
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 = bytecode_data_%s,' % self.escaped_name)
if const_table_len:
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,')
@ -400,9 +410,147 @@ class RawCode:
print(' .fun_data_len = %u,' % len(self.bytecode))
print(' .n_obj = %u,' % len(self.objs))
print(' .n_raw_code = %u,' % len(self.raw_codes))
print(' #if MICROPY_EMIT_NATIVE || MICROPY_EMIT_INLINE_ASM')
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_NATIVE || MICROPY_EMIT_INLINE_ASM')
print(' .type_sig = %u,' % type_sig)
print(' #endif')
print('};')
class RawCodeBytecode(RawCode):
def __init__(self, bytecode, qstrs, objs, raw_codes):
super().__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().__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 @ ")))'
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:
print(' %s & 0xff, %s >> 8,' % (qst, qst))
else:
if kind == 2:
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))
elif MP_NATIVE_ARCH_ARMV6M <= config.native_arch <= MP_NATIVE_ARCH_ARMV7EMDP:
if is_obj:
self._asm_thumb_rewrite_mov(i, qst)
self._asm_thumb_rewrite_mov(i + 4, '(%s >> 16)' % qst)
else:
self._asm_thumb_rewrite_mov(i, qst)
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
self._link_qstr(i, qi_kind, qst)
i += 4
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)
@ -500,19 +648,61 @@ def read_bytecode(file, bytecode, qstr_win):
read_byte(file, bytecode)
def read_raw_code(f, qstr_win):
bc_len = read_uint(f)
bytecode = BytecodeBuffer(bc_len)
name_idx, prelude = read_prelude(f, bytecode)
read_bytecode(f, bytecode, qstr_win)
bytecode.idx = name_idx # rewind to where qstrs are in prelude
read_qstr_and_pack(f, bytecode, qstr_win) # simple_name
read_qstr_and_pack(f, bytecode, qstr_win) # source_file
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:
name_idx, prelude = read_prelude(f, fun_data)
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, qstr_win)
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)
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)
if kind in (MP_CODE_BYTECODE, MP_CODE_NATIVE_PY):
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
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])]
objs = [read_obj(f) for _ in range(n_obj)]
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)]
return RawCode(bytecode.buf, qstrs, objs, raw_codes)
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:
@ -525,6 +715,7 @@ def read_mpy(filename):
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
config.native_arch = feature_byte >> 2
config.mp_small_int_bits = header[3]
qstr_win = QStrWindow(qw_size)
return read_raw_code(f, qstr_win)