8000 py/persistentcode.h: Split the native and bytecode ABI version. by jimmo · Pull Request #9303 · micropython/micropython · GitHub
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py/persistentcode.h: Split the native and bytecode ABI version. #9303

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py/persistentcode.h: Split the native and bytecode ABI version. #9303

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2 changes: 1 addition & 1 deletion mpy-cross/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -228,7 +228,7 @@ MP_NOINLINE int main_(int argc, char **argv) {
a += 1;
} else if (strcmp(argv[a], "--version") == 0) {
printf("MicroPython " MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE
"; mpy-cross emitting mpy v" MP_STRINGIFY(MPY_VERSION) "\n");
"; mpy-cross emitting mpy v" MP_STRINGIFY(MPY_VERSION_BYTECODE) "-v" MP_STRINGIFY(MPY_VERSION_NATIVE) "\n");
retur 10000 n 0;
} else if (strcmp(argv[a], "-v") == 0) {
mp_verbose_flag++;
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10 changes: 6 additions & 4 deletions py/persistentcode.c
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Expand Up @@ -393,14 +393,15 @@ STATIC mp_raw_code_t *load_raw_code(mp_reader_t *reader, mp_module_context_t *co
mp_compiled_module_t mp_raw_code_load(mp_reader_t *reader, mp_module_context_t *context) {
byte header[4];
read_bytes(reader, header, sizeof(header));
byte arch = MPY_FEATURE_DECODE_ARCH(header[2]);
if (header[0] != 'M'
|| header[1] != MPY_VERSION
|| (arch == MP_NATIVE_ARCH_NONE && (header[1] < MPY_VERSION_BYTECODE || header[1] > MPY_VERSION_NATIVE))
|| (arch != MP_NATIVE_ARCH_NONE && header[1] != MPY_VERSION_NATIVE)
|| MPY_FEATURE_DECODE_FLAGS(header[2]) != MPY_FEATURE_FLAGS
|| header[3] > MP_SMALL_INT_BITS) {
mp_raise_ValueError(MP_ERROR_TEXT("incompatible .mpy file"));
}
if (MPY_FEATURE_DECODE_ARCH(header[2]) != MP_NATIVE_ARCH_NONE) {
byte arch = MPY_FEATURE_DECODE_ARCH(header[2]);
if (arch != MP_NATIVE_ARCH_NONE) {
if (!MPY_FEATURE_ARCH_TEST(arch)) {
if (MPY_FEATURE_ARCH_TEST(MP_NATIVE_ARCH_NONE)) {
// On supported ports this can be resolved by enabling feature, eg
Expand Down Expand Up @@ -595,7 +596,7 @@ void mp_raw_code_save(mp_compiled_module_t *cm, mp_print_t *print) {
// byte number of bits in a small int
byte header[4] = {
'M',
MPY_VERSION,
MPY_VERSION_BYTECODE,
MPY_FEATURE_ENCODE_FLAGS(MPY_FEATURE_FLAGS_DYNAMIC),
#if MICROPY_DYNAMIC_COMPILER
mp_dynamic_compiler.small_int_bits,
Expand All @@ -604,6 +605,7 @@ void mp_raw_code_save(mp_compiled_module_t *cm, mp_print_t *print) {
#endif
};
if (cm->has_native) {
header[1] = MPY_VERSION_NATIVE;
header[2] |= MPY_FEATURE_ENCODE_ARCH(MPY_FEATURE_ARCH_DYNAMIC);
}
mp_print_bytes(print, header, sizeof(header));
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14 changes: 11 additions & 3 deletions py/persistentcode.h
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Expand Up @@ -30,8 +30,16 @@
#include "py/reader.h"
#include "py/emitglue.h"

// The current version of .mpy files
#define MPY_VERSION 6
// The current version of .mpy files. For a bytecode only .mpy file (i.e. arch
// set to 0), we will load any file with a version between MPY_VERSION_BYTECODE
// and MPY_VERSION_NATIVE. When an arch is set (i.e. it used emit=native, or the
// native dectorator, or was a dynamic native module), then it must exactly
// match MPY_VERSION_NATIVE.
// This lets us advance the native ABI (e.g. dynruntime.h) without needing
// to break compatibility for bytecode-only .mpy files.
// Must be kept in sync with tools/mpy-tool.py and tools/mpy_ld.py.
#define MPY_VERSION_BYTECODE 6
#define MPY_VERSION_NATIVE 6

// Macros to encode/decode flags to/from the feature byte
#define MPY_FEATURE_ENCODE_FLAGS(flags) (flags)
Expand Down Expand Up @@ -81,7 +89,7 @@
#endif

// 16-bit little-endian integer with the second and third bytes of supported .mpy files
#define MPY_FILE_HEADER_INT (MPY_VERSION \
#define MPY_FILE_HEADER_INT (MPY_VERSION_NATIVE \
| (MPY_FEATURE_ENCODE_FLAGS(MPY_FEATURE_FLAGS) | MPY_FEATURE_ENCODE_ARCH(MPY_FEATURE_ARCH)) << 8)

enum {
Expand Down
18 changes: 13 additions & 5 deletions tools/mpy-tool.py
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Expand Up @@ -87,7 +87,10 @@ def __str__(self):


class Config:
MPY_VERSION = 6
# Must be kept in sync with py/persistentcode.h.
# See comments there for bytecode vs native version.
MPY_VERSION_BYTECODE = 6
MPY_VERSION_NATIVE = 6
MICROPY_LONGINT_IMPL_NONE = 0
MICROPY_LONGINT_IMPL_LONGLONG = 1
MICROPY_LONGINT_IMPL_MPZ = 2
Expand Down Expand Up @@ -1330,11 +1333,14 @@ def read_mpy(filename):
header = reader.read_bytes(4)
if header[0] != ord("M"):
raise MPYReadError(filename, "not a valid .mpy file")
if header[1] != config.MPY_VERSION:
raise MPYReadError(filename, "incompatible .mpy version")
feature_byte = header[2]
mpy_native_arch = feature_byte >> 2
if mpy_native_arch != MP_NATIVE_ARCH_NONE:
if mpy_native_arch == MP_NATIVE_ARCH_NONE:
if header[1] < config.MPY_VERSION_BYTECODE or header[1] > config.MPY_VERSION_NATIVE:
raise MPYReadError(filename, "incompatible bytecode .mpy version")
else:
if header[1] != config.MPY_VERSION_NATIVE:
raise MPYReadError(filename, "incompatible native .mpy version")
if config.native_arch == MP_NATIVE_ARCH_NONE:
config.native_arch = mpy_native_arch
elif config.native_arch != mpy_native_arch:
Expand Down Expand Up @@ -1669,7 +1675,9 @@ def merge_mpy(compiled_modules, output_file):

header = bytearray(4)
header[0] = ord("M")
header[1] = config.MPY_VERSION
header[1] = (
config.MPY_VERSION_NATIVE if config.native_arch else config.MPY_VERSION_BYTECODE
)
header[2] = config.native_arch << 2
header[3] = config.mp_small_int_bits
merged_mpy.extend(header)
Expand Down
10 changes: 8 additions & 2 deletions tools/mpy_ld.py
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Expand Up @@ -34,8 +34,12 @@
sys.path.append(os.path.dirname(__file__) + "/../py")
import makeqstrdata as qstrutil

# Must be kept in sync with py/persistentcode.h.
# See comments there for bytecode vs native version.
MPY_VERSION_BYTECODE = 6
MPY_VERSION_NATIVE = 6

# MicroPython constants
MPY_VERSION = 6
MP_CODE_BYTECODE = 2
MP_CODE_NATIVE_VIPER = 4
MP_NATIVE_ARCH_X86 = 1
Expand Down Expand Up @@ -917,7 +921,9 @@ def build_mpy(env, entry_offset, fmpy, native_qstr_vals, native_qstr_objs):
out.open(fmpy)

# MPY: header
out.write_bytes(bytearray([ord("M"), MPY_VERSION, env.arch.mpy_feature, MP_SMALL_INT_BITS]))
out.write_bytes(
bytearray([ord("M"), MPY_VERSION_NATIVE, env.arch.mpy_feature, MP_SMALL_INT_BITS])
)

# MPY: n_qstr
out.write_uint(1 + len(native_qstr_vals))
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