py/emitglue: Flush caches when loading native code without emitters.

This commit forces a data/instruction cache flush after loading native
code blocks even if there's no emitter available.

Caches flush upon native code load was still tied to the presence of a
native emitter, but this assumption is no longer valid due to previous
commits decoupling native code loading from code generation
availability.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

Author: agatti

py/emitglue.c

@@ -107,14 +107,14 @@ void mp_emit_glue_assign_native(mp_raw_code_t *rc, mp_raw_code_kind_t kind, cons
     // Some architectures require flushing/invalidation of the I/D caches,
     // so that the generated native code which was created in data RAM will
     // be available for execution from instruction RAM.
-    #if MICROPY_EMIT_THUMB || MICROPY_EMIT_INLINE_THUMB
+    #if MICROPY_EMIT_THUMB || MICROPY_EMIT_INLINE_THUMB || (MP_NATIVE_ARCH_ARMV6M <= MPY_FEATURE_ARCH && MPY_FEATURE_ARCH <= MP_NATIVE_ARCH_ARMV7EMDP)
     #if __ICACHE_PRESENT == 1
     // Flush D-cache, so the code emitted is stored in RAM.
     MP_HAL_CLEAN_DCACHE(fun_data, fun_len);
     // Invalidate I-cache, so the newly-created code is reloaded from RAM.
     SCB_InvalidateICache();
     #endif
-    #elif MICROPY_EMIT_ARM
+    #elif MICROPY_EMIT_ARM || (MPY_FEATURE_ARCH == MP_NATIVE_ARCH_ARMV6)
     #if (defined(__linux__) && defined(__GNUC__)) || __ARM_ARCH == 7
     __builtin___clear_cache((void *)fun_data, (char *)fun_data + fun_len);
     #elif defined(__arm__)
@@ -127,7 +127,7 @@ void mp_emit_glue_assign_native(mp_raw_code_t *rc, mp_raw_code_kind_t kind, cons
         "mcr p15, 0, r0, c7, c7, 0\n" // invalidate I-cache and D-cache
         : : : "r0", "cc");
     #endif
-    #elif (MICROPY_EMIT_RV32 || MICROPY_EMIT_INLINE_RV32) && defined(MP_HAL_CLEAN_DCACHE)
+    #elif (MICROPY_EMIT_RV32 || MICROPY_EMIT_INLINE_RV32 || (MPY_FEATURE_ARCH == MP_NATIVE_ARCH_RV32IMC)) && defined(MP_HAL_CLEAN_DCACHE)
     // Flush the D-cache.
     MP_HAL_CLEAN_DCACHE(fun_data, fun_len);
     #endif