micropython/ports/embed/port/embed_util.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2022-2023 Damien P. George
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include <string.h>
#include "py/compile.h"
#include "py/gc.h"
#include "py/persistentcode.h"
#include "py/runtime.h"
#include "py/stackctrl.h"
#include "shared/runtime/gchelper.h"
#include "port/micropython_embed.h"

// Initialise the runtime.
void mp_embed_init(void *gc_heap, size_t gc_heap_size) {
    mp_stack_ctrl_init();
    gc_init(gc_heap, (uint8_t *)gc_heap + gc_heap_size);
    mp_init();
}

#if MICROPY_ENABLE_COMPILER
// Compile and execute the given source script (Python text).
void mp_embed_exec_str(const char *src) {
    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
        // Compile, parse and execute the given string.
        mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
        qstr source_name = lex->source_name;
        mp_parse_tree_t parse_tree = mp_parse(lex, MP_PARSE_FILE_INPUT);
        mp_obj_t module_fun = mp_compile(&parse_tree, source_name, true);
        mp_call_function_0(module_fun);
        nlr_pop();
    } else {
        // Uncaught exception: print it out.
        mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
    }
}
#endif

#if MICROPY_PERSISTENT_CODE_LOAD
void mp_embed_exec_mpy(const uint8_t *mpy, size_t len) {
    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
        // Execute the given .mpy data.
        mp_module_context_t *ctx = m_new_obj(mp_module_context_t);
        ctx->module.globals = mp_globals_get();
        mp_compiled_module_t cm;
        cm.context = ctx;
        mp_raw_code_load_mem(mpy, len, &cm);
        mp_obj_t f = mp_make_function_from_raw_code(cm.rc, ctx, MP_OBJ_NULL);
        mp_call_function_0(f);
        nlr_pop();
    } else {
        // Uncaught exception: print it out.
        mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
    }
}
#endif

// Deinitialise the runtime.
void mp_embed_deinit(void) {
    mp_deinit();
}

#if MICROPY_ENABLE_GC
// Run a garbage collection cycle.
void gc_collect(void) {
    gc_collect_start();
    gc_helper_collect_regs_and_stack();
    gc_collect_end();
}
#endif

// Called if an exception is raised outside all C exception-catching handlers.
void nlr_jump_fail(void *val) {
    for (;;) {
    }
}

#ifndef NDEBUG
// Used when debugging is enabled.
void __assert_func(const char *file, int line, const char *func, const char *expr) {
    for (;;) {
    }
}
#endif