5ae3ddcc9a
Usually this checking is done by VM on jump instructions, but for linear sequences of instructions and builtin functions this won't happen. Particular target of this change is long-running builtin functions like time.sleep().
605 lines
20 KiB
C
605 lines
20 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include "py/mpstate.h"
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#include "py/nlr.h"
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#include "py/compile.h"
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#include "py/runtime.h"
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#include "py/builtin.h"
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#include "py/repl.h"
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#include "py/gc.h"
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#include "py/stackctrl.h"
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#include "py/mphal.h"
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#include "genhdr/mpversion.h"
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#include "input.h"
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// Command line options, with their defaults
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STATIC bool compile_only = false;
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STATIC uint emit_opt = MP_EMIT_OPT_NONE;
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#if MICROPY_ENABLE_GC
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// Heap size of GC heap (if enabled)
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// Make it larger on a 64 bit machine, because pointers are larger.
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long heap_size = 1024*1024 * (sizeof(mp_uint_t) / 4);
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#endif
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STATIC void stderr_print_strn(void *env, const char *str, size_t len) {
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(void)env;
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ssize_t dummy = write(STDERR_FILENO, str, len);
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(void)dummy;
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}
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const mp_print_t mp_stderr_print = {NULL, stderr_print_strn};
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#define FORCED_EXIT (0x100)
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// If exc is SystemExit, return value where FORCED_EXIT bit set,
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// and lower 8 bits are SystemExit value. For all other exceptions,
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// return 1.
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STATIC int handle_uncaught_exception(mp_obj_base_t *exc) {
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// check for SystemExit
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if (mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(exc->type), MP_OBJ_FROM_PTR(&mp_type_SystemExit))) {
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// None is an exit value of 0; an int is its value; anything else is 1
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mp_obj_t exit_val = mp_obj_exception_get_value(MP_OBJ_FROM_PTR(exc));
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mp_int_t val = 0;
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if (exit_val != mp_const_none && !mp_obj_get_int_maybe(exit_val, &val)) {
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val = 1;
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}
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return FORCED_EXIT | (val & 255);
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}
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// Report all other exceptions
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mp_obj_print_exception(&mp_stderr_print, MP_OBJ_FROM_PTR(exc));
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return 1;
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}
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// Returns standard error codes: 0 for success, 1 for all other errors,
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// except if FORCED_EXIT bit is set then script raised SystemExit and the
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// value of the exit is in the lower 8 bits of the return value
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STATIC int execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) {
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if (lex == NULL) {
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printf("MemoryError: lexer could not allocate memory\n");
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return 1;
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}
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mp_hal_set_interrupt_char(CHAR_CTRL_C);
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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qstr source_name = lex->source_name;
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#if MICROPY_PY___FILE__
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if (input_kind == MP_PARSE_FILE_INPUT) {
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mp_store_global(MP_QSTR___file__, MP_OBJ_NEW_QSTR(source_name));
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}
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#endif
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mp_parse_tree_t parse_tree = mp_parse(lex, input_kind);
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/*
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printf("----------------\n");
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mp_parse_node_print(parse_tree.root, 0);
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printf("----------------\n");
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*/
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mp_obj_t module_fun = mp_compile(&parse_tree, source_name, emit_opt, is_repl);
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if (!compile_only) {
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// execute it
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mp_call_function_0(module_fun);
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// check for pending exception
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if (MP_STATE_VM(mp_pending_exception) != MP_OBJ_NULL) {
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mp_obj_t obj = MP_STATE_VM(mp_pending_exception);
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MP_STATE_VM(mp_pending_exception) = MP_OBJ_NULL;
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nlr_raise(obj);
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}
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}
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mp_hal_set_interrupt_char(-1);
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nlr_pop();
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return 0;
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} else {
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// uncaught exception
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mp_hal_set_interrupt_char(-1);
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return handle_uncaught_exception(nlr.ret_val);
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}
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}
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#if MICROPY_USE_READLINE == 1
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#include "lib/mp-readline/readline.h"
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#else
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STATIC char *strjoin(const char *s1, int sep_char, const char *s2) {
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int l1 = strlen(s1);
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int l2 = strlen(s2);
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char *s = malloc(l1 + l2 + 2);
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memcpy(s, s1, l1);
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if (sep_char != 0) {
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s[l1] = sep_char;
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l1 += 1;
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}
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memcpy(s + l1, s2, l2);
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s[l1 + l2] = 0;
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return s;
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}
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#endif
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STATIC int do_repl(void) {
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mp_hal_stdout_tx_str("MicroPython " MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE "; "
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MICROPY_PY_SYS_PLATFORM " version\nUse Ctrl-D to exit, Ctrl-E for paste mode\n");
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#if MICROPY_USE_READLINE == 1
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// use MicroPython supplied readline
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vstr_t line;
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vstr_init(&line, 16);
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for (;;) {
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mp_hal_stdio_mode_raw();
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input_restart:
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vstr_reset(&line);
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int ret = readline(&line, ">>> ");
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mp_parse_input_kind_t parse_input_kind = MP_PARSE_SINGLE_INPUT;
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if (ret == CHAR_CTRL_D) {
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// EOF
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printf("\n");
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mp_hal_stdio_mode_orig();
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vstr_clear(&line);
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return 0;
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} else if (ret == CHAR_CTRL_E) {
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// paste mode
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mp_hal_stdout_tx_str("\npaste mode; Ctrl-C to cancel, Ctrl-D to finish\n=== ");
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vstr_reset(&line);
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for (;;) {
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char c = mp_hal_stdin_rx_chr();
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if (c == CHAR_CTRL_C) {
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// cancel everything
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mp_hal_stdout_tx_str("\n");
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goto input_restart;
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} else if (c == CHAR_CTRL_D) {
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// end of input
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mp_hal_stdout_tx_str("\n");
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break;
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} else {
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// add char to buffer and echo
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vstr_add_byte(&line, c);
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if (c == '\r') {
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mp_hal_stdout_tx_str("\n=== ");
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} else {
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mp_hal_stdout_tx_strn(&c, 1);
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}
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}
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}
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parse_input_kind = MP_PARSE_FILE_INPUT;
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} else if (line.len == 0) {
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if (ret != 0) {
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printf("\n");
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}
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goto input_restart;
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} else {
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// got a line with non-zero length, see if it needs continuing
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while (mp_repl_continue_with_input(vstr_null_terminated_str(&line))) {
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vstr_add_byte(&line, '\n');
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ret = readline(&line, "... ");
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if (ret == CHAR_CTRL_C) {
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// cancel everything
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printf("\n");
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goto input_restart;
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} else if (ret == CHAR_CTRL_D) {
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// stop entering compound statement
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break;
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}
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}
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}
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mp_hal_stdio_mode_orig();
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line.buf, line.len, false);
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ret = execute_from_lexer(lex, parse_input_kind, true);
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if (ret & FORCED_EXIT) {
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return ret;
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}
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}
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#else
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// use GNU or simple readline
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for (;;) {
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char *line = prompt(">>> ");
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if (line == NULL) {
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// EOF
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return 0;
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}
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while (mp_repl_continue_with_input(line)) {
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char *line2 = prompt("... ");
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if (line2 == NULL) {
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break;
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}
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char *line3 = strjoin(line, '\n', line2);
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free(line);
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free(line2);
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line = line3;
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}
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line, strlen(line), false);
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int ret = execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, true);
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if (ret & FORCED_EXIT) {
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return ret;
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}
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free(line);
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}
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#endif
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}
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STATIC int do_file(const char *file) {
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mp_lexer_t *lex = mp_lexer_new_from_file(file);
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return execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false);
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}
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STATIC int do_str(const char *str) {
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, str, strlen(str), false);
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return execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false);
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}
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STATIC int usage(char **argv) {
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printf(
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"usage: %s [<opts>] [-X <implopt>] [-c <command>] [<filename>]\n"
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"Options:\n"
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"-v : verbose (trace various operations); can be multiple\n"
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"-O[N] : apply bytecode optimizations of level N\n"
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"\n"
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"Implementation specific options:\n", argv[0]
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);
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int impl_opts_cnt = 0;
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printf(
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" compile-only -- parse and compile only\n"
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" emit={bytecode,native,viper} -- set the default code emitter\n"
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);
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impl_opts_cnt++;
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#if MICROPY_ENABLE_GC
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printf(
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" heapsize=<n> -- set the heap size for the GC (default %ld)\n"
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, heap_size);
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impl_opts_cnt++;
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#endif
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if (impl_opts_cnt == 0) {
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printf(" (none)\n");
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}
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return 1;
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}
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// Process options which set interpreter init options
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STATIC void pre_process_options(int argc, char **argv) {
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for (int a = 1; a < argc; a++) {
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if (argv[a][0] == '-') {
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if (strcmp(argv[a], "-X") == 0) {
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if (a + 1 >= argc) {
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exit(usage(argv));
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}
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if (0) {
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} else if (strcmp(argv[a + 1], "compile-only") == 0) {
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compile_only = true;
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} else if (strcmp(argv[a + 1], "emit=bytecode") == 0) {
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emit_opt = MP_EMIT_OPT_BYTECODE;
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} else if (strcmp(argv[a + 1], "emit=native") == 0) {
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emit_opt = MP_EMIT_OPT_NATIVE_PYTHON;
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} else if (strcmp(argv[a + 1], "emit=viper") == 0) {
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emit_opt = MP_EMIT_OPT_VIPER;
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#if MICROPY_ENABLE_GC
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} else if (strncmp(argv[a + 1], "heapsize=", sizeof("heapsize=") - 1) == 0) {
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char *end;
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heap_size = strtol(argv[a + 1] + sizeof("heapsize=") - 1, &end, 0);
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// Don't bring unneeded libc dependencies like tolower()
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// If there's 'w' immediately after number, adjust it for
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// target word size. Note that it should be *before* size
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// suffix like K or M, to avoid confusion with kilowords,
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// etc. the size is still in bytes, just can be adjusted
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// for word size (taking 32bit as baseline).
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bool word_adjust = false;
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if ((*end | 0x20) == 'w') {
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word_adjust = true;
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end++;
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}
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if ((*end | 0x20) == 'k') {
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heap_size *= 1024;
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} else if ((*end | 0x20) == 'm') {
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heap_size *= 1024 * 1024;
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}
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if (word_adjust) {
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heap_size = heap_size * BYTES_PER_WORD / 4;
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}
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#endif
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} else {
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exit(usage(argv));
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}
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a++;
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}
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}
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}
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}
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STATIC void set_sys_argv(char *argv[], int argc, int start_arg) {
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for (int i = start_arg; i < argc; i++) {
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mp_obj_list_append(mp_sys_argv, MP_OBJ_NEW_QSTR(qstr_from_str(argv[i])));
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}
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}
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#ifdef _WIN32
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#define PATHLIST_SEP_CHAR ';'
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#else
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#define PATHLIST_SEP_CHAR ':'
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#endif
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/*
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typedef union _a_t { uint32_t u32; uint64_t u64; } a_t;
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STATIC const uint64_t table[4] = {
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1,
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2,
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3,
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//(a_t){(uint32_t)&set_sys_argv}.u64,
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((a_t){(uint32_t)123}).u64,
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};
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*/
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int main(int argc, char **argv) {
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/*
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printf("sizeof(void*)=%u\n", (uint)sizeof(void*));
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for (int i = 0; i < sizeof(table); ++i) {
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byte *ptr = (void*)&table[0];
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printf(" %02x", ptr[i]);
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if ((i + 1)%8 == 0) printf("\n");
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}
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*/
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mp_stack_set_limit(40000 * (BYTES_PER_WORD / 4));
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pre_process_options(argc, argv);
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#if MICROPY_ENABLE_GC
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char *heap = malloc(heap_size);
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gc_init(heap, heap + heap_size);
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#endif
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mp_init();
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#ifndef _WIN32
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// create keyboard interrupt object
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MP_STATE_VM(keyboard_interrupt_obj) = mp_obj_new_exception(&mp_type_KeyboardInterrupt);
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#endif
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char *home = getenv("HOME");
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char *path = getenv("MICROPYPATH");
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if (path == NULL) {
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#ifdef MICROPY_PY_SYS_PATH_DEFAULT
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path = MICROPY_PY_SYS_PATH_DEFAULT;
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#else
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path = "~/.micropython/lib:/usr/lib/micropython";
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#endif
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}
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mp_uint_t path_num = 1; // [0] is for current dir (or base dir of the script)
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for (char *p = path; p != NULL; p = strchr(p, PATHLIST_SEP_CHAR)) {
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path_num++;
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if (p != NULL) {
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p++;
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}
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}
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mp_obj_list_init(MP_OBJ_TO_PTR(mp_sys_path), path_num);
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mp_obj_t *path_items;
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mp_obj_list_get(mp_sys_path, &path_num, &path_items);
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path_items[0] = MP_OBJ_NEW_QSTR(MP_QSTR_);
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{
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char *p = path;
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for (mp_uint_t i = 1; i < path_num; i++) {
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char *p1 = strchr(p, PATHLIST_SEP_CHAR);
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if (p1 == NULL) {
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p1 = p + strlen(p);
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}
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if (p[0] == '~' && p[1] == '/' && home != NULL) {
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// Expand standalone ~ to $HOME
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CHECKBUF(buf, PATH_MAX);
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CHECKBUF_APPEND(buf, home, strlen(home));
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CHECKBUF_APPEND(buf, p + 1, (size_t)(p1 - p - 1));
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path_items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(buf, CHECKBUF_LEN(buf)));
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} else {
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path_items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(p, p1 - p));
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}
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p = p1 + 1;
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}
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}
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mp_obj_list_init(MP_OBJ_TO_PTR(mp_sys_argv), 0);
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#if defined(MICROPY_UNIX_COVERAGE)
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{
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MP_DECLARE_CONST_FUN_OBJ(extra_coverage_obj);
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mp_store_global(QSTR_FROM_STR_STATIC("extra_coverage"), (mp_obj_t)&extra_coverage_obj);
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}
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#endif
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// Here is some example code to create a class and instance of that class.
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// First is the Python, then the C code.
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//
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// class TestClass:
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// pass
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// test_obj = TestClass()
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// test_obj.attr = 42
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//
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// mp_obj_t test_class_type, test_class_instance;
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// test_class_type = mp_obj_new_type(QSTR_FROM_STR_STATIC("TestClass"), mp_const_empty_tuple, mp_obj_new_dict(0));
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// mp_store_name(QSTR_FROM_STR_STATIC("test_obj"), test_class_instance = mp_call_function_0(test_class_type));
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// mp_store_attr(test_class_instance, QSTR_FROM_STR_STATIC("attr"), mp_obj_new_int(42));
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/*
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printf("bytes:\n");
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printf(" total %d\n", m_get_total_bytes_allocated());
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printf(" cur %d\n", m_get_current_bytes_allocated());
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printf(" peak %d\n", m_get_peak_bytes_allocated());
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*/
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const int NOTHING_EXECUTED = -2;
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|
int ret = NOTHING_EXECUTED;
|
|
for (int a = 1; a < argc; a++) {
|
|
if (argv[a][0] == '-') {
|
|
if (strcmp(argv[a], "-c") == 0) {
|
|
if (a + 1 >= argc) {
|
|
return usage(argv);
|
|
}
|
|
ret = do_str(argv[a + 1]);
|
|
if (ret & FORCED_EXIT) {
|
|
break;
|
|
}
|
|
a += 1;
|
|
} else if (strcmp(argv[a], "-m") == 0) {
|
|
if (a + 1 >= argc) {
|
|
return usage(argv);
|
|
}
|
|
mp_obj_t import_args[4];
|
|
import_args[0] = mp_obj_new_str(argv[a + 1], strlen(argv[a + 1]), false);
|
|
import_args[1] = import_args[2] = mp_const_none;
|
|
// Ask __import__ to handle imported module specially - set its __name__
|
|
// to __main__, and also return this leaf module, not top-level package
|
|
// containing it.
|
|
import_args[3] = mp_const_false;
|
|
// TODO: https://docs.python.org/3/using/cmdline.html#cmdoption-m :
|
|
// "the first element of sys.argv will be the full path to
|
|
// the module file (while the module file is being located,
|
|
// the first element will be set to "-m")."
|
|
set_sys_argv(argv, argc, a + 1);
|
|
|
|
mp_obj_t mod;
|
|
nlr_buf_t nlr;
|
|
if (nlr_push(&nlr) == 0) {
|
|
mod = mp_builtin___import__(MP_ARRAY_SIZE(import_args), import_args);
|
|
nlr_pop();
|
|
} else {
|
|
// uncaught exception
|
|
return handle_uncaught_exception(nlr.ret_val) & 0xff;
|
|
}
|
|
|
|
if (mp_obj_is_package(mod)) {
|
|
// TODO
|
|
mp_printf(&mp_stderr_print, "%s: -m for packages not yet implemented\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
ret = 0;
|
|
break;
|
|
} else if (strcmp(argv[a], "-X") == 0) {
|
|
a += 1;
|
|
} else if (strcmp(argv[a], "-v") == 0) {
|
|
mp_verbose_flag++;
|
|
} else if (strncmp(argv[a], "-O", 2) == 0) {
|
|
if (unichar_isdigit(argv[a][2])) {
|
|
MP_STATE_VM(mp_optimise_value) = argv[a][2] & 0xf;
|
|
} else {
|
|
MP_STATE_VM(mp_optimise_value) = 0;
|
|
for (char *p = argv[a] + 1; *p && *p == 'O'; p++, MP_STATE_VM(mp_optimise_value)++);
|
|
}
|
|
} else {
|
|
return usage(argv);
|
|
}
|
|
} else {
|
|
char *pathbuf = malloc(PATH_MAX);
|
|
char *basedir = realpath(argv[a], pathbuf);
|
|
if (basedir == NULL) {
|
|
mp_printf(&mp_stderr_print, "%s: can't open file '%s': [Errno %d] %s\n", argv[0], argv[a], errno, strerror(errno));
|
|
// CPython exits with 2 in such case
|
|
ret = 2;
|
|
break;
|
|
}
|
|
|
|
// Set base dir of the script as first entry in sys.path
|
|
char *p = strrchr(basedir, '/');
|
|
path_items[0] = MP_OBJ_NEW_QSTR(qstr_from_strn(basedir, p - basedir));
|
|
free(pathbuf);
|
|
|
|
set_sys_argv(argv, argc, a);
|
|
ret = do_file(argv[a]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ret == NOTHING_EXECUTED) {
|
|
if (isatty(0)) {
|
|
prompt_read_history();
|
|
ret = do_repl();
|
|
prompt_write_history();
|
|
} else {
|
|
mp_lexer_t *lex = mp_lexer_new_from_fd(MP_QSTR__lt_stdin_gt_, 0, false);
|
|
ret = execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false);
|
|
}
|
|
}
|
|
|
|
#if MICROPY_PY_MICROPYTHON_MEM_INFO
|
|
if (mp_verbose_flag) {
|
|
mp_micropython_mem_info(0, NULL);
|
|
}
|
|
#endif
|
|
|
|
mp_deinit();
|
|
|
|
#if MICROPY_ENABLE_GC && !defined(NDEBUG)
|
|
// We don't really need to free memory since we are about to exit the
|
|
// process, but doing so helps to find memory leaks.
|
|
free(heap);
|
|
#endif
|
|
|
|
//printf("total bytes = %d\n", m_get_total_bytes_allocated());
|
|
return ret & 0xff;
|
|
}
|
|
|
|
uint mp_import_stat(const char *path) {
|
|
struct stat st;
|
|
if (stat(path, &st) == 0) {
|
|
if (S_ISDIR(st.st_mode)) {
|
|
return MP_IMPORT_STAT_DIR;
|
|
} else if (S_ISREG(st.st_mode)) {
|
|
return MP_IMPORT_STAT_FILE;
|
|
}
|
|
}
|
|
return MP_IMPORT_STAT_NO_EXIST;
|
|
}
|
|
|
|
void nlr_jump_fail(void *val) {
|
|
printf("FATAL: uncaught NLR %p\n", val);
|
|
exit(1);
|
|
}
|