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py: Make viper functions have the same entry signature as native.

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This commit makes viper functions have the same signature as native
functions, at the level of the emitter/assembler.  This means that viper
functions can now be wrapped in the same uPy object as native functions.

Viper functions are now responsible for parsing their arguments (before it
was done by the runtime), and this makes calling them more efficient (in
most cases) because the viper entry code can be custom generated to suit
the signature of the function.

This change also opens the way forward for viper functions to take
arbitrary numbers of arguments, and for them to handle globals correctly,
among other things.
This commit is contained in:
Damien George
2018-09-14 17:40:59 +10:00
parent 460954734e
commit 43f1848bfa
7 changed files with 50 additions and 96 deletions
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py/emitglue.c
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@@ -134,10 +134,8 @@ mp_obj_t mp_make_function_from_raw_code(const mp_raw_code_t *rc, mp_obj_t def_ar
switch (rc->kind) {
#if MICROPY_EMIT_NATIVE
case MP_CODE_NATIVE_PY:
fun = mp_obj_new_fun_native(def_args, def_kw_args, rc->data.u_native.fun_data, rc->data.u_native.const_table);
break;
case MP_CODE_NATIVE_VIPER:
fun = mp_obj_new_fun_viper(rc->n_pos_args, rc->data.u_native.fun_data, rc->data.u_native.type_sig);
fun = mp_obj_new_fun_native(def_args, def_kw_args, rc->data.u_native.fun_data, rc->data.u_native.const_table);
break;
#endif
#if MICROPY_EMIT_INLINE_ASM