Commit 6a11048a authored by Damien George's avatar Damien George
Browse files

py/persistentcode: Bump .mpy version due to change in bytecode.

parent c2644147
......@@ -38,6 +38,9 @@
#include "py/smallint.h"
// The current version of .mpy files
#define MPY_VERSION (1)
// The feature flags byte encodes the compile-time config options that
// affect the generate bytecode.
#define MPY_FEATURE_FLAGS ( \
......@@ -209,10 +212,10 @@ STATIC mp_raw_code_t *load_raw_code(mp_reader_t *reader) {
mp_raw_code_t *mp_raw_code_load(mp_reader_t *reader) {
byte header[4];
read_bytes(reader, header, sizeof(header));
if (strncmp((char*)header, "M\x00", 2) != 0) {
mp_raise_ValueError("invalid .mpy file");
}
if (header[2] != MPY_FEATURE_FLAGS || header[3] > mp_small_int_bits()) {
if (header[0] != 'M'
|| header[1] != MPY_VERSION
|| header[2] != MPY_FEATURE_FLAGS
|| header[3] > mp_small_int_bits()) {
mp_raise_ValueError("incompatible .mpy file");
}
mp_raw_code_t *rc = load_raw_code(reader);
......@@ -359,7 +362,7 @@ void mp_raw_code_save(mp_raw_code_t *rc, mp_print_t *print) {
// byte version
// byte feature flags
// byte number of bits in a small int
byte header[4] = {'M', 0, MPY_FEATURE_FLAGS_DYNAMIC,
byte header[4] = {'M', MPY_VERSION, MPY_FEATURE_FLAGS_DYNAMIC,
#if MICROPY_DYNAMIC_COMPILER
mp_dynamic_compiler.small_int_bits,
#else
......
......@@ -57,6 +57,7 @@ class FreezeError(Exception):
return 'error while freezing %s: %s' % (self.rawcode.source_file, self.msg)
class Config:
MPY_VERSION = 1
MICROPY_LONGINT_IMPL_NONE = 0
MICROPY_LONGINT_IMPL_LONGLONG = 1
MICROPY_LONGINT_IMPL_MPZ = 2
......@@ -438,8 +439,8 @@ def read_mpy(filename):
header = bytes_cons(f.read(4))
if header[0] != ord('M'):
raise Exception('not a valid .mpy file')
if header[1] != 0:
raise Exception('incompatible version')
if header[1] != config.MPY_VERSION:
raise Exception('incompatible .mpy version')
feature_flags = header[2]
config.MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE = (feature_flags & 1) != 0
config.MICROPY_PY_BUILTINS_STR_UNICODE = (feature_flags & 2) != 0
......
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