shared: Introduce new top-level dir and move 1st party lib code there.

This commit moves all first-party code developed for this project from lib/
to shared/, so that lib/ now only contains third-party code.

The following directories are moved as-is from lib to shared:

    lib/libc            -> shared/libc
    lib/memzip          -> shared/memzip
    lib/netutils        -> shared/netutils
    lib/timeutils       -> shared/timeutils
    lib/upytesthelper   -> shared/upytesthelper

All files in lib/embed/ have been moved to shared/libc/.

lib/mp-readline has been moved to shared/readline.

lib/utils has been moved to shared/runtime, with the exception of
lib/utils/printf.c which has been moved to shared/libc/printf.c.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 0 insertions, 716 deletions

diff --git a/lib/utils/pyexec.c b/lib/utils/pyexec.c
deleted file mode 100644
index 4446b36b6..000000000
--- a/lib/utils/pyexec.c
+++ /dev/null
@@ -1,716 +0,0 @@
-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013, 2014 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 <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-
-#include "py/compile.h"
-#include "py/runtime.h"
-#include "py/repl.h"
-#include "py/gc.h"
-#include "py/frozenmod.h"
-#include "py/mphal.h"
-#if MICROPY_HW_ENABLE_USB
-#include "irq.h"
-#include "usb.h"
-#endif
-#include "lib/mp-readline/readline.h"
-#include "lib/utils/pyexec.h"
-#include "genhdr/mpversion.h"
-
-pyexec_mode_kind_t pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
-int pyexec_system_exit = 0;
-
-#if MICROPY_REPL_INFO
-STATIC bool repl_display_debugging_info = 0;
-#endif
-
-#define EXEC_FLAG_PRINT_EOF (1)
-#define EXEC_FLAG_ALLOW_DEBUGGING (2)
-#define EXEC_FLAG_IS_REPL (4)
-#define EXEC_FLAG_SOURCE_IS_RAW_CODE (8)
-#define EXEC_FLAG_SOURCE_IS_VSTR (16)
-#define EXEC_FLAG_SOURCE_IS_FILENAME (32)
-#define EXEC_FLAG_SOURCE_IS_READER (64)
-
-// parses, compiles and executes the code in the lexer
-// frees the lexer before returning
-// EXEC_FLAG_PRINT_EOF prints 2 EOF chars: 1 after normal output, 1 after exception output
-// EXEC_FLAG_ALLOW_DEBUGGING allows debugging info to be printed after executing the code
-// EXEC_FLAG_IS_REPL is used for REPL inputs (flag passed on to mp_compile)
-STATIC int parse_compile_execute(const void *source, mp_parse_input_kind_t input_kind, int exec_flags) {
-    int ret = 0;
-    #if MICROPY_REPL_INFO
-    uint32_t start = 0;
-    #endif
-
-    #ifdef MICROPY_BOARD_BEFORE_PYTHON_EXEC
-    MICROPY_BOARD_BEFORE_PYTHON_EXEC(input_kind, exec_flags);
-    #endif
-
-    // by default a SystemExit exception returns 0
-    pyexec_system_exit = 0;
-
-    nlr_buf_t nlr;
-    nlr.ret_val = NULL;
-    if (nlr_push(&nlr) == 0) {
-        mp_obj_t module_fun;
-        #if MICROPY_MODULE_FROZEN_MPY
-        if (exec_flags & EXEC_FLAG_SOURCE_IS_RAW_CODE) {
-            // source is a raw_code object, create the function
-            module_fun = mp_make_function_from_raw_code(source, MP_OBJ_NULL, MP_OBJ_NULL);
-        } else
-        #endif
-        {
-            #if MICROPY_ENABLE_COMPILER
-            mp_lexer_t *lex;
-            if (exec_flags & EXEC_FLAG_SOURCE_IS_VSTR) {
-                const vstr_t *vstr = source;
-                lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr->buf, vstr->len, 0);
-            } else if (exec_flags & EXEC_FLAG_SOURCE_IS_READER) {
-                lex = mp_lexer_new(MP_QSTR__lt_stdin_gt_, *(mp_reader_t *)source);
-            } else if (exec_flags & EXEC_FLAG_SOURCE_IS_FILENAME) {
-                lex = mp_lexer_new_from_file(source);
-            } else {
-                lex = (mp_lexer_t *)source;
-            }
-            // source is a lexer, parse and compile the script
-            qstr source_name = lex->source_name;
-            mp_parse_tree_t parse_tree = mp_parse(lex, input_kind);
-            module_fun = mp_compile(&parse_tree, source_name, exec_flags & EXEC_FLAG_IS_REPL);
-            #else
-            mp_raise_msg(&mp_type_RuntimeError, MP_ERROR_TEXT("script compilation not supported"));
-            #endif
-        }
-
-        // execute code
-        mp_hal_set_interrupt_char(CHAR_CTRL_C); // allow ctrl-C to interrupt us
-        #if MICROPY_REPL_INFO
-        start = mp_hal_ticks_ms();
-        #endif
-        mp_call_function_0(module_fun);
-        mp_hal_set_interrupt_char(-1); // disable interrupt
-        mp_handle_pending(true); // handle any pending exceptions (and any callbacks)
-        nlr_pop();
-        ret = 1;
-        if (exec_flags & EXEC_FLAG_PRINT_EOF) {
-            mp_hal_stdout_tx_strn("\x04", 1);
-        }
-    } else {
-        // uncaught exception
-        mp_hal_set_interrupt_char(-1); // disable interrupt
-        mp_handle_pending(false); // clear any pending exceptions (and run any callbacks)
-
-        if (exec_flags & EXEC_FLAG_SOURCE_IS_READER) {
-            const mp_reader_t *reader = source;
-            reader->close(reader->data);
-        }
-
-        // print EOF after normal output
-        if (exec_flags & EXEC_FLAG_PRINT_EOF) {
-            mp_hal_stdout_tx_strn("\x04", 1);
-        }
-        // check for SystemExit
-        if (mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(((mp_obj_base_t *)nlr.ret_val)->type), MP_OBJ_FROM_PTR(&mp_type_SystemExit))) {
-            // at the moment, the value of SystemExit is unused
-            ret = pyexec_system_exit;
-        } else {
-            mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
-            ret = 0;
-        }
-    }
-
-    #if MICROPY_REPL_INFO
-    // display debugging info if wanted
-    if ((exec_flags & EXEC_FLAG_ALLOW_DEBUGGING) && repl_display_debugging_info) {
-        mp_uint_t ticks = mp_hal_ticks_ms() - start; // TODO implement a function that does this properly
-        printf("took " UINT_FMT " ms\n", ticks);
-        // qstr info
-        {
-            size_t n_pool, n_qstr, n_str_data_bytes, n_total_bytes;
-            qstr_pool_info(&n_pool, &n_qstr, &n_str_data_bytes, &n_total_bytes);
-            printf("qstr:\n  n_pool=%u\n  n_qstr=%u\n  "
-                "n_str_data_bytes=%u\n  n_total_bytes=%u\n",
-                (unsigned)n_pool, (unsigned)n_qstr, (unsigned)n_str_data_bytes, (unsigned)n_total_bytes);
-        }
-
-        #if MICROPY_ENABLE_GC
-        // run collection and print GC info
-        gc_collect();
-        gc_dump_info();
-        #endif
-    }
-    #endif
-
-    if (exec_flags & EXEC_FLAG_PRINT_EOF) {
-        mp_hal_stdout_tx_strn("\x04", 1);
-    }
-
-    #ifdef MICROPY_BOARD_AFTER_PYTHON_EXEC
-    MICROPY_BOARD_AFTER_PYTHON_EXEC(input_kind, exec_flags, nlr.ret_val, &ret);
-    #endif
-
-    return ret;
-}
-
-#if MICROPY_ENABLE_COMPILER
-
-// This can be configured by a port (and even configured to a function to be
-// computed dynamically) to indicate the maximum number of bytes that can be
-// held in the stdin buffer.
-#ifndef MICROPY_REPL_STDIN_BUFFER_MAX
-#define MICROPY_REPL_STDIN_BUFFER_MAX (256)
-#endif
-
-typedef struct _mp_reader_stdin_t {
-    bool eof;
-    uint16_t window_max;
-    uint16_t window_remain;
-} mp_reader_stdin_t;
-
-STATIC mp_uint_t mp_reader_stdin_readbyte(void *data) {
-    mp_reader_stdin_t *reader = (mp_reader_stdin_t *)data;
-
-    if (reader->eof) {
-        return MP_READER_EOF;
-    }
-
-    int c = mp_hal_stdin_rx_chr();
-
-    if (c == CHAR_CTRL_C || c == CHAR_CTRL_D) {
-        reader->eof = true;
-        mp_hal_stdout_tx_strn("\x04", 1); // indicate end to host
-        if (c == CHAR_CTRL_C) {
-            #if MICROPY_KBD_EXCEPTION
-            MP_STATE_VM(mp_kbd_exception).traceback_data = NULL;
-            nlr_raise(MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)));
-            #else
-            mp_raise_type(&mp_type_KeyboardInterrupt);
-            #endif
-        } else {
-            return MP_READER_EOF;
-        }
-    }
-
-    if (--reader->window_remain == 0) {
-        mp_hal_stdout_tx_strn("\x01", 1); // indicate window available to host
-        reader->window_remain = reader->window_max;
-    }
-
-    return c;
-}
-
-STATIC void mp_reader_stdin_close(void *data) {
-    mp_reader_stdin_t *reader = (mp_reader_stdin_t *)data;
-    if (!reader->eof) {
-        reader->eof = true;
-        mp_hal_stdout_tx_strn("\x04", 1); // indicate end to host
-        for (;;) {
-            int c = mp_hal_stdin_rx_chr();
-            if (c == CHAR_CTRL_C || c == CHAR_CTRL_D) {
-                break;
-            }
-        }
-    }
-}
-
-STATIC void mp_reader_new_stdin(mp_reader_t *reader, mp_reader_stdin_t *reader_stdin, uint16_t buf_max) {
-    // Make flow-control window half the buffer size, and indicate to the host that 2x windows are
-    // free (sending the window size implicitly indicates that a window is free, and then the 0x01
-    // indicates that another window is free).
-    size_t window = buf_max / 2;
-    char reply[3] = { window & 0xff, window >> 8, 0x01 };
-    mp_hal_stdout_tx_strn(reply, sizeof(reply));
-
-    reader_stdin->eof = false;
-    reader_stdin->window_max = window;
-    reader_stdin->window_remain = window;
-    reader->data = reader_stdin;
-    reader->readbyte = mp_reader_stdin_readbyte;
-    reader->close = mp_reader_stdin_close;
-}
-
-STATIC int do_reader_stdin(int c) {
-    if (c != 'A') {
-        // Unsupported command.
-        mp_hal_stdout_tx_strn("R\x00", 2);
-        return 0;
-    }
-
-    // Indicate reception of command.
-    mp_hal_stdout_tx_strn("R\x01", 2);
-
-    mp_reader_t reader;
-    mp_reader_stdin_t reader_stdin;
-    mp_reader_new_stdin(&reader, &reader_stdin, MICROPY_REPL_STDIN_BUFFER_MAX);
-    int exec_flags = EXEC_FLAG_PRINT_EOF | EXEC_FLAG_SOURCE_IS_READER;
-    return parse_compile_execute(&reader, MP_PARSE_FILE_INPUT, exec_flags);
-}
-
-#if MICROPY_REPL_EVENT_DRIVEN
-
-typedef struct _repl_t {
-    // This structure originally also held current REPL line,
-    // but it was moved to MP_STATE_VM(repl_line) as containing
-    // root pointer. Still keep structure in case more state
-    // will be added later.
-    // vstr_t line;
-    bool cont_line;
-    bool paste_mode;
-} repl_t;
-
-repl_t repl;
-
-STATIC int pyexec_raw_repl_process_char(int c);
-STATIC int pyexec_friendly_repl_process_char(int c);
-
-void pyexec_event_repl_init(void) {
-    MP_STATE_VM(repl_line) = vstr_new(32);
-    repl.cont_line = false;
-    repl.paste_mode = false;
-    // no prompt before printing friendly REPL banner or entering raw REPL
-    readline_init(MP_STATE_VM(repl_line), "");
-    if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
-        pyexec_raw_repl_process_char(CHAR_CTRL_A);
-    } else {
-        pyexec_friendly_repl_process_char(CHAR_CTRL_B);
-    }
-}
-
-STATIC int pyexec_raw_repl_process_char(int c) {
-    if (c == CHAR_CTRL_A) {
-        // reset raw REPL
-        if (vstr_len(MP_STATE_VM(repl_line)) == 2 && vstr_str(MP_STATE_VM(repl_line))[0] == CHAR_CTRL_E) {
-            int ret = do_reader_stdin(vstr_str(MP_STATE_VM(repl_line))[1]);
-            if (ret & PYEXEC_FORCED_EXIT) {
-                return ret;
-            }
-            goto reset;
-        }
-        mp_hal_stdout_tx_str("raw REPL; CTRL-B to exit\r\n");
-        goto reset;
-    } else if (c == CHAR_CTRL_B) {
-        // change to friendly REPL
-        pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
-        vstr_reset(MP_STATE_VM(repl_line));
-        repl.cont_line = false;
-        repl.paste_mode = false;
-        pyexec_friendly_repl_process_char(CHAR_CTRL_B);
-        return 0;
-    } else if (c == CHAR_CTRL_C) {
-        // clear line
-        vstr_reset(MP_STATE_VM(repl_line));
-        return 0;
-    } else if (c == CHAR_CTRL_D) {
-        // input finished
-    } else {
-        // let through any other raw 8-bit value
-        vstr_add_byte(MP_STATE_VM(repl_line), c);
-        return 0;
-    }
-
-    // indicate reception of command
-    mp_hal_stdout_tx_str("OK");
-
-    if (MP_STATE_VM(repl_line)->len == 0) {
-        // exit for a soft reset
-        mp_hal_stdout_tx_str("\r\n");
-        vstr_clear(MP_STATE_VM(repl_line));
-        return PYEXEC_FORCED_EXIT;
-    }
-
-    int ret = parse_compile_execute(MP_STATE_VM(repl_line), MP_PARSE_FILE_INPUT, EXEC_FLAG_PRINT_EOF | EXEC_FLAG_SOURCE_IS_VSTR);
-    if (ret & PYEXEC_FORCED_EXIT) {
-        return ret;
-    }
-
-reset:
-    vstr_reset(MP_STATE_VM(repl_line));
-    mp_hal_stdout_tx_str(">");
-
-    return 0;
-}
-
-STATIC int pyexec_friendly_repl_process_char(int c) {
-    if (repl.paste_mode) {
-        if (c == CHAR_CTRL_C) {
-            // cancel everything
-            mp_hal_stdout_tx_str("\r\n");
-            goto input_restart;
-        } else if (c == CHAR_CTRL_D) {
-            // end of input
-            mp_hal_stdout_tx_str("\r\n");
-            int ret = parse_compile_execute(MP_STATE_VM(repl_line), MP_PARSE_FILE_INPUT, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL | EXEC_FLAG_SOURCE_IS_VSTR);
-            if (ret & PYEXEC_FORCED_EXIT) {
-                return ret;
-            }
-            goto input_restart;
-        } else {
-            // add char to buffer and echo
-            vstr_add_byte(MP_STATE_VM(repl_line), c);
-            if (c == '\r') {
-                mp_hal_stdout_tx_str("\r\n=== ");
-            } else {
-                char buf[1] = {c};
-                mp_hal_stdout_tx_strn(buf, 1);
-            }
-            return 0;
-        }
-    }
-
-    int ret = readline_process_char(c);
-
-    if (!repl.cont_line) {
-
-        if (ret == CHAR_CTRL_A) {
-            // change to raw REPL
-            pyexec_mode_kind = PYEXEC_MODE_RAW_REPL;
-            mp_hal_stdout_tx_str("\r\n");
-            pyexec_raw_repl_process_char(CHAR_CTRL_A);
-            return 0;
-        } else if (ret == CHAR_CTRL_B) {
-            // reset friendly REPL
-            mp_hal_stdout_tx_str("\r\n");
-            mp_hal_stdout_tx_str("MicroPython " MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE "; " MICROPY_HW_BOARD_NAME " with " MICROPY_HW_MCU_NAME "\r\n");
-            #if MICROPY_PY_BUILTINS_HELP
-            mp_hal_stdout_tx_str("Type \"help()\" for more information.\r\n");
-            #endif
-            goto input_restart;
-        } else if (ret == CHAR_CTRL_C) {
-            // break
-            mp_hal_stdout_tx_str("\r\n");
-            goto input_restart;
-        } else if (ret == CHAR_CTRL_D) {
-            // exit for a soft reset
-            mp_hal_stdout_tx_str("\r\n");
-            vstr_clear(MP_STATE_VM(repl_line));
-            return PYEXEC_FORCED_EXIT;
-        } else if (ret == CHAR_CTRL_E) {
-            // paste mode
-            mp_hal_stdout_tx_str("\r\npaste mode; Ctrl-C to cancel, Ctrl-D to finish\r\n=== ");
-            vstr_reset(MP_STATE_VM(repl_line));
-            repl.paste_mode = true;
-            return 0;
-        }
-
-        if (ret < 0) {
-            return 0;
-        }
-
-        if (!mp_repl_continue_with_input(vstr_null_terminated_str(MP_STATE_VM(repl_line)))) {
-            goto exec;
-        }
-
-        vstr_add_byte(MP_STATE_VM(repl_line), '\n');
-        repl.cont_line = true;
-        readline_note_newline("... ");
-        return 0;
-
-    } else {
-
-        if (ret == CHAR_CTRL_C) {
-            // cancel everything
-            mp_hal_stdout_tx_str("\r\n");
-            repl.cont_line = false;
-            goto input_restart;
-        } else if (ret == CHAR_CTRL_D) {
-            // stop entering compound statement
-            goto exec;
-        }
-
-        if (ret < 0) {
-            return 0;
-        }
-
-        if (mp_repl_continue_with_input(vstr_null_terminated_str(MP_STATE_VM(repl_line)))) {
-            vstr_add_byte(MP_STATE_VM(repl_line), '\n');
-            readline_note_newline("... ");
-            return 0;
-        }
-
-    exec:;
-        int ret = parse_compile_execute(MP_STATE_VM(repl_line), MP_PARSE_SINGLE_INPUT, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL | EXEC_FLAG_SOURCE_IS_VSTR);
-        if (ret & PYEXEC_FORCED_EXIT) {
-            return ret;
-        }
-
-    input_restart:
-        vstr_reset(MP_STATE_VM(repl_line));
-        repl.cont_line = false;
-        repl.paste_mode = false;
-        readline_init(MP_STATE_VM(repl_line), ">>> ");
-        return 0;
-    }
-}
-
-uint8_t pyexec_repl_active;
-int pyexec_event_repl_process_char(int c) {
-    pyexec_repl_active = 1;
-    int res;
-    if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
-        res = pyexec_raw_repl_process_char(c);
-    } else {
-        res = pyexec_friendly_repl_process_char(c);
-    }
-    pyexec_repl_active = 0;
-    return res;
-}
-
-#else // MICROPY_REPL_EVENT_DRIVEN
-
-int pyexec_raw_repl(void) {
-    vstr_t line;
-    vstr_init(&line, 32);
-
-raw_repl_reset:
-    mp_hal_stdout_tx_str("raw REPL; CTRL-B to exit\r\n");
-
-    for (;;) {
-        vstr_reset(&line);
-        mp_hal_stdout_tx_str(">");
-        for (;;) {
-            int c = mp_hal_stdin_rx_chr();
-            if (c == CHAR_CTRL_A) {
-                // reset raw REPL
-                if (vstr_len(&line) == 2 && vstr_str(&line)[0] == CHAR_CTRL_E) {
-                    int ret = do_reader_stdin(vstr_str(&line)[1]);
-                    if (ret & PYEXEC_FORCED_EXIT) {
-                        return ret;
-                    }
-                    vstr_reset(&line);
-                    mp_hal_stdout_tx_str(">");
-                    continue;
-                }
-                goto raw_repl_reset;
-            } else if (c == CHAR_CTRL_B) {
-                // change to friendly REPL
-                mp_hal_stdout_tx_str("\r\n");
-                vstr_clear(&line);
-                pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
-                return 0;
-            } else if (c == CHAR_CTRL_C) {
-                // clear line
-                vstr_reset(&line);
-            } else if (c == CHAR_CTRL_D) {
-                // input finished
-                break;
-            } else {
-                // let through any other raw 8-bit value
-                vstr_add_byte(&line, c);
-            }
-        }
-
-        // indicate reception of command
-        mp_hal_stdout_tx_str("OK");
-
-        if (line.len == 0) {
-            // exit for a soft reset
-            mp_hal_stdout_tx_str("\r\n");
-            vstr_clear(&line);
-            return PYEXEC_FORCED_EXIT;
-        }
-
-        int ret = parse_compile_execute(&line, MP_PARSE_FILE_INPUT, EXEC_FLAG_PRINT_EOF | EXEC_FLAG_SOURCE_IS_VSTR);
-        if (ret & PYEXEC_FORCED_EXIT) {
-            return ret;
-        }
-    }
-}
-
-int pyexec_friendly_repl(void) {
-    vstr_t line;
-    vstr_init(&line, 32);
-
-friendly_repl_reset:
-    mp_hal_stdout_tx_str("MicroPython " MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE "; " MICROPY_HW_BOARD_NAME " with " MICROPY_HW_MCU_NAME "\r\n");
-    #if MICROPY_PY_BUILTINS_HELP
-    mp_hal_stdout_tx_str("Type \"help()\" for more information.\r\n");
-    #endif
-
-    // to test ctrl-C
-    /*
-    {
-        uint32_t x[4] = {0x424242, 0xdeaddead, 0x242424, 0xdeadbeef};
-        for (;;) {
-            nlr_buf_t nlr;
-            printf("pyexec_repl: %p\n", x);
-            mp_hal_set_interrupt_char(CHAR_CTRL_C);
-            if (nlr_push(&nlr) == 0) {
-                for (;;) {
-                }
-            } else {
-                printf("break\n");
-            }
-        }
-    }
-    */
-
-    for (;;) {
-    input_restart:
-
-        #if MICROPY_HW_ENABLE_USB
-        if (usb_vcp_is_enabled()) {
-            // If the user gets to here and interrupts are disabled then
-            // they'll never see the prompt, traceback etc. The USB REPL needs
-            // interrupts to be enabled or no transfers occur. So we try to
-            // do the user a favor and reenable interrupts.
-            if (query_irq() == IRQ_STATE_DISABLED) {
-                enable_irq(IRQ_STATE_ENABLED);
-                mp_hal_stdout_tx_str("MPY: enabling IRQs\r\n");
-            }
-        }
-        #endif
-
-        // If the GC is locked at this point there is no way out except a reset,
-        // so force the GC to be unlocked to help the user debug what went wrong.
-        if (MP_STATE_THREAD(gc_lock_depth) != 0) {
-            MP_STATE_THREAD(gc_lock_depth) = 0;
-        }
-
-        vstr_reset(&line);
-        int ret = readline(&line, ">>> ");
-        mp_parse_input_kind_t parse_input_kind = MP_PARSE_SINGLE_INPUT;
-
-        if (ret == CHAR_CTRL_A) {
-            // change to raw REPL
-            mp_hal_stdout_tx_str("\r\n");
-            vstr_clear(&line);
-            pyexec_mode_kind = PYEXEC_MODE_RAW_REPL;
-            return 0;
-        } else if (ret == CHAR_CTRL_B) {
-            // reset friendly REPL
-            mp_hal_stdout_tx_str("\r\n");
-            goto friendly_repl_reset;
-        } else if (ret == CHAR_CTRL_C) {
-            // break
-            mp_hal_stdout_tx_str("\r\n");
-            continue;
-        } else if (ret == CHAR_CTRL_D) {
-            // exit for a soft reset
-            mp_hal_stdout_tx_str("\r\n");
-            vstr_clear(&line);
-            return PYEXEC_FORCED_EXIT;
-        } else if (ret == CHAR_CTRL_E) {
-            // paste mode
-            mp_hal_stdout_tx_str("\r\npaste mode; Ctrl-C to cancel, Ctrl-D to finish\r\n=== ");
-            vstr_reset(&line);
-            for (;;) {
-                char c = mp_hal_stdin_rx_chr();
-                if (c == CHAR_CTRL_C) {
-                    // cancel everything
-                    mp_hal_stdout_tx_str("\r\n");
-                    goto input_restart;
-                } else if (c == CHAR_CTRL_D) {
-                    // end of input
-                    mp_hal_stdout_tx_str("\r\n");
-                    break;
-                } else {
-                    // add char to buffer and echo
-                    vstr_add_byte(&line, c);
-                    if (c == '\r') {
-                        mp_hal_stdout_tx_str("\r\n=== ");
-                    } else {
-                        mp_hal_stdout_tx_strn(&c, 1);
-                    }
-                }
-            }
-            parse_input_kind = MP_PARSE_FILE_INPUT;
-        } else if (vstr_len(&line) == 0) {
-            continue;
-        } else {
-            // got a line with non-zero length, see if it needs continuing
-            while (mp_repl_continue_with_input(vstr_null_terminated_str(&line))) {
-                vstr_add_byte(&line, '\n');
-                ret = readline(&line, "... ");
-                if (ret == CHAR_CTRL_C) {
-                    // cancel everything
-                    mp_hal_stdout_tx_str("\r\n");
-                    goto input_restart;
-                } else if (ret == CHAR_CTRL_D) {
-                    // stop entering compound statement
-                    break;
-                }
-            }
-        }
-
-        ret = parse_compile_execute(&line, parse_input_kind, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL | EXEC_FLAG_SOURCE_IS_VSTR);
-        if (ret & PYEXEC_FORCED_EXIT) {
-            return ret;
-        }
-    }
-}
-
-#endif // MICROPY_REPL_EVENT_DRIVEN
-#endif // MICROPY_ENABLE_COMPILER
-
-int pyexec_file(const char *filename) {
-    return parse_compile_execute(filename, MP_PARSE_FILE_INPUT, EXEC_FLAG_SOURCE_IS_FILENAME);
-}
-
-int pyexec_file_if_exists(const char *filename) {
-    #if MICROPY_MODULE_FROZEN
-    if (mp_frozen_stat(filename) == MP_IMPORT_STAT_FILE) {
-        return pyexec_frozen_module(filename);
-    }
-    #endif
-    if (mp_import_stat(filename) != MP_IMPORT_STAT_FILE) {
-        return 1; // success (no file is the same as an empty file executing without fail)
-    }
-    return pyexec_file(filename);
-}
-
-#if MICROPY_MODULE_FROZEN
-int pyexec_frozen_module(const char *name) {
-    void *frozen_data;
-    int frozen_type = mp_find_frozen_module(name, strlen(name), &frozen_data);
-
-    switch (frozen_type) {
-        #if MICROPY_MODULE_FROZEN_STR
-        case MP_FROZEN_STR:
-            return parse_compile_execute(frozen_data, MP_PARSE_FILE_INPUT, 0);
-        #endif
-
-        #if MICROPY_MODULE_FROZEN_MPY
-        case MP_FROZEN_MPY:
-            return parse_compile_execute(frozen_data, MP_PARSE_FILE_INPUT, EXEC_FLAG_SOURCE_IS_RAW_CODE);
-        #endif
-
-        default:
-            printf("could not find module '%s'\n", name);
-            return false;
-    }
-}
-#endif
-
-#if MICROPY_REPL_INFO
-mp_obj_t pyb_set_repl_info(mp_obj_t o_value) {
-    repl_display_debugging_info = mp_obj_get_int(o_value);
-    return mp_const_none;
-}
-MP_DEFINE_CONST_FUN_OBJ_1(pyb_set_repl_info_obj, pyb_set_repl_info);
-#endif