Fail to use mpy with embed mode

[YogzZ]

Fail to use the mpy file with embed mode on x86_64 platform.

Follows are my steps:

1. build features0.mpy

$ cd micropython/examples/natmod/features0
$ make

2. add code in micropython/examples/embedding/main.c

    mp_embed_exec_str(example_2);

+    uint8_t buffer[2048];
+    size_t bytes_read, bytes_buffer = 0;
+    FILE *fp = fopen("features0.mpy", "r");
+    do {
+        bytes_read = fread(buffer, 1, BUFFER_SIZE, fp);
+        bytes_buffer += bytes_read;
+    } while (bytes_read > 0);
+    printf("bytes_buffer: %ld\n", bytes_buffer);
+    fclose(fp);
+    printf("%x %x %x\n", buffer[0], buffer[1], buffer[2]);
+    mp_embed_exec_mpy(buffer, bytes_buffer);
    // Deinitialise MicroPython.
    mp_embed_deinit();

3. add code in micropython/examples/embedding/mpconfigport.h

+ #define MICROPY_PERSISTENT_CODE_LOAD            (1)

4. build embed

$ cd micropython/examples/embedding
$ make -f micropython_embed.mk
$ cp ../natmod/features0/features0.mpy ./
$ make

5. run embed

$ ./embed

...
ValueError: native code in .mpy unsupported

[dlech]

You also need to define MICROPY_EMIT_X64 when building MicroPython.

[YogzZ]

You also need to define MICROPY_EMIT_X64 when building MicroPython.

I define MICROPY_EMIT_X64 in micropython/examples/embedding/mpconfigport.h

+ #define MICROPY_EMIT_X64    (1)

Then got:

micropython_embed/py/compile.c: In function ‘compile_built_in_decorator’:
micropython_embed/py/compile.c:841:24: error: ‘MP_QSTR_native’ undeclared (first use in this function); did you mean ‘MP_QSTR_enable’?
  841 |     } else if (attr == MP_QSTR_native) {
      |                        ^~~~~~~~~~~~~~
      |                        MP_QSTR_enable
micropython_embed/py/compile.c:841:24: note: each undeclared identifier is reported only once for each function it appears in
micropython_embed/py/compile.c:843:24: error: ‘MP_QSTR_viper’ undeclared (first use in this function); did you mean ‘MP_QSTR_upper’?
  843 |     } else if (attr == MP_QSTR_viper) {
      |                        ^~~~~~~~~~~~~
      |                        MP_QSTR_upper
make: *** [<builtin>: micropython_embed/py/compile.o] Error 1

I try to block MICROPY_EMIT_NATIVE but got more errors. Could you give me more advice?

[dlech]

Sometimes qstrs don't get regenerated correctly. I would do a clean and rebuild first to see if that fixes it. If not, poke around the source code to see if some other define is missing.