diff options
Diffstat (limited to 'cortex-m3-qemu/pyexec.c')
| -rw-r--r-- | cortex-m3-qemu/pyexec.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/cortex-m3-qemu/pyexec.c b/cortex-m3-qemu/pyexec.c new file mode 100644 index 0000000000..298e58a5fd --- /dev/null +++ b/cortex-m3-qemu/pyexec.c @@ -0,0 +1,237 @@ +#include <stdlib.h> +#include <stdio.h> + +#include <stm32f4xx_hal.h> + +#include "nlr.h" +#include "misc.h" +#include "mpconfig.h" +#include "qstr.h" +#include "misc.h" +#include "lexer.h" +#include "parse.h" +#include "obj.h" +#include "parsehelper.h" +#include "compile.h" +#include "runtime.h" +#include "repl.h" +#include "gc.h" +#include "gccollect.h" +#include "systick.h" +#include "pybstdio.h" +#include "readline.h" +#include "pyexec.h" +#include "storage.h" +#include "usb.h" +#include "build/py/py-version.h" + +pyexec_mode_kind_t pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL; +STATIC bool repl_display_debugging_info = 0; + +// parses, compiles and executes the code in the lexer +// frees the lexer before returning +bool parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) { + mp_parse_error_kind_t parse_error_kind; + mp_parse_node_t pn = mp_parse(lex, input_kind, &parse_error_kind); + qstr source_name = mp_lexer_source_name(lex); + + if (pn == MP_PARSE_NODE_NULL) { + // parse error + mp_parse_show_exception(lex, parse_error_kind); + mp_lexer_free(lex); + return false; + } + + mp_lexer_free(lex); + + mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, is_repl); + mp_parse_node_free(pn); + + if (module_fun == mp_const_none) { + return false; + } + + nlr_buf_t nlr; + bool ret; + uint32_t start = HAL_GetTick(); + if (nlr_push(&nlr) == 0) { + usb_vcp_set_interrupt_char(VCP_CHAR_CTRL_C); // allow ctrl-C to interrupt us + mp_call_function_0(module_fun); + usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt + nlr_pop(); + ret = true; + } else { + // uncaught exception + // FIXME it could be that an interrupt happens just before we disable it here + usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt + mp_obj_print_exception((mp_obj_t)nlr.ret_val); + ret = false; + } + + // display debugging info if wanted + if (is_repl && repl_display_debugging_info) { + uint32_t ticks = HAL_GetTick() - start; // TODO implement a function that does this properly + printf("took %lu ms\n", ticks); + gc_collect(); + // qstr info + { + uint 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", n_pool, n_qstr, n_str_data_bytes, n_total_bytes); + } + + // GC info + { + gc_info_t info; + gc_info(&info); + printf("GC:\n"); + printf(" %lu total\n", info.total); + printf(" %lu : %lu\n", info.used, info.free); + printf(" 1=%lu 2=%lu m=%lu\n", info.num_1block, info.num_2block, info.max_block); + } + } + + return ret; +} + +int pyexec_raw_repl(void) { + vstr_t line; + vstr_init(&line, 32); + +raw_repl_reset: + stdout_tx_str("raw REPL; CTRL-B to exit\r\n"); + + for (;;) { + vstr_reset(&line); + stdout_tx_str(">"); + for (;;) { + char c = stdin_rx_chr(); + if (c == VCP_CHAR_CTRL_A) { + // reset raw REPL + goto raw_repl_reset; + } else if (c == VCP_CHAR_CTRL_B) { + // change to friendly REPL + stdout_tx_str("\r\n"); + vstr_clear(&line); + pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL; + return 0; + } else if (c == VCP_CHAR_CTRL_C) { + // clear line + vstr_reset(&line); + } else if (c == VCP_CHAR_CTRL_D) { + // input finished + break; + } else if (c <= 127) { + // let through any other ASCII character + vstr_add_char(&line, c); + } + } + + // indicate reception of command + stdout_tx_str("OK"); + + if (line.len == 0) { + // exit for a soft reset + stdout_tx_str("\r\n"); + vstr_clear(&line); + return 1; + } + + mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line.buf, line.len, 0); + parse_compile_execute(lex, MP_PARSE_FILE_INPUT, false); + + // indicate end of output with EOF character + stdout_tx_str("\004"); + } +} + +int pyexec_friendly_repl(void) { + vstr_t line; + vstr_init(&line, 32); + +#if defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD + // in host mode, we enable the LCD for the repl + mp_obj_t lcd_o = mp_call_function_0(mp_load_name(qstr_from_str("LCD"))); + mp_call_function_1(mp_load_attr(lcd_o, qstr_from_str("light")), mp_const_true); +#endif + +friendly_repl_reset: + stdout_tx_str("Micro Python build " MICROPY_GIT_HASH " on " MICROPY_BUILD_DATE "; " MICROPY_HW_BOARD_NAME " with STM32F405RG\r\n"); + stdout_tx_str("Type \"help()\" for more information.\r\n"); + + // to test ctrl-C + /* + { + uint32_t x[4] = {0x424242, 0xdeaddead, 0x242424, 0xdeadbeef}; + for (;;) { + nlr_buf_t nlr; + printf("pyexec_repl: %p\n", x); + usb_vcp_set_interrupt_char(VCP_CHAR_CTRL_C); + if (nlr_push(&nlr) == 0) { + for (;;) { + } + } else { + printf("break\n"); + } + } + } + */ + + for (;;) { + vstr_reset(&line); + int ret = readline(&line, ">>> "); + + if (ret == VCP_CHAR_CTRL_A) { + // change to raw REPL + stdout_tx_str("\r\n"); + vstr_clear(&line); + pyexec_mode_kind = PYEXEC_MODE_RAW_REPL; + return 0; + } else if (ret == VCP_CHAR_CTRL_B) { + // reset friendly REPL + stdout_tx_str("\r\n"); + goto friendly_repl_reset; + } else if (ret == VCP_CHAR_CTRL_C) { + // break + stdout_tx_str("\r\n"); + continue; + } else if (ret == VCP_CHAR_CTRL_D) { + // exit for a soft reset + stdout_tx_str("\r\n"); + vstr_clear(&line); + return 1; + } else if (vstr_len(&line) == 0) { + continue; + } + + while (mp_repl_continue_with_input(vstr_str(&line))) { + vstr_add_char(&line, '\n'); + int ret = readline(&line, "... "); + if (ret == VCP_CHAR_CTRL_D) { + // stop entering compound statement + break; + } + } + + mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr_str(&line), vstr_len(&line), 0); + parse_compile_execute(lex, MP_PARSE_SINGLE_INPUT, true); + } +} + +bool pyexec_file(const char *filename) { + mp_lexer_t *lex = mp_lexer_new_from_file(filename); + + if (lex == NULL) { + printf("could not open file '%s' for reading\n", filename); + return false; + } + + return parse_compile_execute(lex, MP_PARSE_FILE_INPUT, false); +} + +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); |