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py/persistentcode: Add architecture flags check for RV32 platforms.

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This commit introduces the MPY architecture flags checking code specific
for the RV32 target, currently checking for the only additional
extension that is supported by the runtime: Zba.

The warnings inside "mpy-cross" have also been removed since now there
is a way to reject incompatible MPY files at runtime.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
This commit is contained in:
Alessandro Gatti
2025-09-23 22:52:44 +02:00
parent a6bc1ccbe5
commit 64971f1a65
4 changed files with 39 additions and 9 deletions
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12
mpy-cross/main.c
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@@ -94,6 +94,12 @@ static int compile_and_save(const char *file, const char *output_file, const cha
mp_compiled_module_t cm;
cm.context = m_new_obj(mp_module_context_t);
cm.arch_flags = 0;
#if MICROPY_EMIT_NATIVE && MICROPY_EMIT_RV32
if (mp_dynamic_compiler.native_arch == MP_NATIVE_ARCH_RV32IMC && mp_dynamic_compiler.backend_options != NULL) {
cm.arch_flags = ((asm_rv32_backend_options_t *)mp_dynamic_compiler.backend_options)->allowed_extensions;
}
#endif
mp_compile_to_raw_code(&parse_tree, source_name, false, &cm);
if ((output_file != NULL && strcmp(output_file, "-") == 0) ||
@@ -138,7 +144,7 @@ static int usage(char **argv) {
"-march=<arch> : set architecture for native emitter;\n"
" x86, x64, armv6, armv6m, armv7m, armv7em, armv7emsp,\n"
" armv7emdp, xtensa, xtensawin, rv32imc, rv64imc, host, debug\n"
"-march-flags=<flags> : set architecture-specific flags (OUTPUT FILE MAY NOT WORK ON ALL TARGETS!)\n"
"-march-flags=<flags> : set architecture-specific flags\n"
" supported flags for rv32imc: zba\n"
"\n"
"Implementation specific options:\n", argv[0]
@@ -382,10 +388,6 @@ MP_NOINLINE int main_(int argc, char **argv) {
mp_printf(&mp_stderr_print, "unrecognised arch flags\n");
exit(1);
}
mp_printf(&mp_stderr_print,
"WARNING: Using architecture-specific flags may create a MPY file whose code won't run on all targets!\n"
" Currently there are no checks in the module file loader for whether the chosen flags used to\n"
" build the MPY file are compatible with the running target.\n\n");
}
#if MICROPY_EMIT_NATIVE