a7fa18c203
Simplify and document/comment the handling of builtin import for:
- already-loaded modules
- built-in modules
- built-in umodules (formerly weak links)
- filesystem modules
Retains existing functionality with smaller code size but should also
facilitate potential new features (built-in packages, controlling the
frozen path).
Also makes the (unix-only) -m behavior a bit more obvious and configurable.
Code size change with this commit:
bare-arm: +0 +0.000%
minimal x86: -64 -0.039%
unix x64: -32 -0.006%
unix nanbox: -4 -0.001%
stm32: -184 -0.047% PYBV10
cc3200: -120 -0.065%
esp8266: -228 -0.033% GENERIC
esp32: -268 -0.018% GENERIC[incl +16(data)]
nrf: -152 -0.087% pca10040
rp2: -256 -0.052% PICO
samd: -80 -0.057% ADAFRUIT_ITSYBITSY_M4_EXPRESS
382 lines
14 KiB
C
382 lines
14 KiB
C
/*
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* This file is part of the MicroPython 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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// Options to control how MicroPython is built for this port,
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// overriding defaults in py/mpconfig.h.
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// Variant-specific definitions.
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#include "mpconfigvariant.h"
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// The minimal variant's config covers everything.
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// If we're building the minimal variant, ignore the rest of this file.
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#ifndef MICROPY_UNIX_MINIMAL
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#define MICROPY_ALLOC_PATH_MAX (PATH_MAX)
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#define MICROPY_PERSISTENT_CODE_LOAD (1)
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#if !defined(MICROPY_EMIT_X64) && defined(__x86_64__)
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#define MICROPY_EMIT_X64 (1)
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#endif
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#if !defined(MICROPY_EMIT_X86) && defined(__i386__)
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#define MICROPY_EMIT_X86 (1)
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#endif
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#if !defined(MICROPY_EMIT_THUMB) && defined(__thumb2__)
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#define MICROPY_EMIT_THUMB (1)
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#define MICROPY_MAKE_POINTER_CALLABLE(p) ((void *)((mp_uint_t)(p) | 1))
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#endif
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// Some compilers define __thumb2__ and __arm__ at the same time, let
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// autodetected thumb2 emitter have priority.
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#if !defined(MICROPY_EMIT_ARM) && defined(__arm__) && !defined(__thumb2__)
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#define MICROPY_EMIT_ARM (1)
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#endif
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#define MICROPY_COMP_MODULE_CONST (1)
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#define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (1)
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#define MICROPY_COMP_RETURN_IF_EXPR (1)
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#define MICROPY_ENABLE_GC (1)
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#define MICROPY_ENABLE_FINALISER (1)
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#define MICROPY_STACK_CHECK (1)
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#define MICROPY_MALLOC_USES_ALLOCATED_SIZE (1)
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#define MICROPY_MEM_STATS (1)
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#define MICROPY_DEBUG_PRINTERS (1)
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// Printing debug to stderr may give tests which
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// check stdout a chance to pass, etc.
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#define MICROPY_DEBUG_PRINTER (&mp_stderr_print)
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#define MICROPY_READER_POSIX (1)
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#define MICROPY_USE_READLINE_HISTORY (1)
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#define MICROPY_HELPER_REPL (1)
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#define MICROPY_REPL_EMACS_KEYS (1)
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#define MICROPY_REPL_AUTO_INDENT (1)
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#define MICROPY_HELPER_LEXER_UNIX (1)
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#define MICROPY_ENABLE_SOURCE_LINE (1)
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#ifndef MICROPY_FLOAT_IMPL
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#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_DOUBLE)
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#endif
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#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_MPZ)
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#ifndef MICROPY_STREAMS_NON_BLOCK
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#define MICROPY_STREAMS_NON_BLOCK (1)
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#endif
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#define MICROPY_STREAMS_POSIX_API (1)
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#define MICROPY_OPT_COMPUTED_GOTO (1)
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#ifndef MICROPY_OPT_LOAD_ATTR_FAST_PATH
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#define MICROPY_OPT_LOAD_ATTR_FAST_PATH (1)
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#endif
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#ifndef MICROPY_OPT_MAP_LOOKUP_CACHE
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#define MICROPY_OPT_MAP_LOOKUP_CACHE (1)
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#endif
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#define MICROPY_MODULE_WEAK_LINKS (1)
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#define MICROPY_MODULE_OVERRIDE_MAIN_IMPORT (1)
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#define MICROPY_CAN_OVERRIDE_BUILTINS (1)
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#define MICROPY_VFS_POSIX_FILE (1)
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#define MICROPY_PY_FUNCTION_ATTRS (1)
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#define MICROPY_PY_DESCRIPTORS (1)
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#define MICROPY_PY_DELATTR_SETATTR (1)
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#define MICROPY_PY_FSTRINGS (1)
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#define MICROPY_PY_BUILTINS_STR_UNICODE (1)
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#define MICROPY_PY_BUILTINS_STR_CENTER (1)
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#define MICROPY_PY_BUILTINS_STR_PARTITION (1)
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#define MICROPY_PY_BUILTINS_STR_SPLITLINES (1)
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#define MICROPY_PY_BUILTINS_MEMORYVIEW (1)
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#define MICROPY_PY_BUILTINS_FROZENSET (1)
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#define MICROPY_PY_BUILTINS_COMPILE (1)
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#define MICROPY_PY_BUILTINS_NOTIMPLEMENTED (1)
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#define MICROPY_PY_BUILTINS_INPUT (1)
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#define MICROPY_PY_BUILTINS_POW3 (1)
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#define MICROPY_PY_BUILTINS_ROUND_INT (1)
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#define MICROPY_PY_MICROPYTHON_MEM_INFO (1)
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#define MICROPY_PY_ALL_SPECIAL_METHODS (1)
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#define MICROPY_PY_REVERSE_SPECIAL_METHODS (1)
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#define MICROPY_PY_ARRAY_SLICE_ASSIGN (1)
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#define MICROPY_PY_BUILTINS_SLICE_ATTRS (1)
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#define MICROPY_PY_BUILTINS_SLICE_INDICES (1)
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#define MICROPY_PY_SYS_EXIT (1)
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#define MICROPY_PY_SYS_ATEXIT (1)
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#if MICROPY_PY_SYS_SETTRACE
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#define MICROPY_PERSISTENT_CODE_SAVE (1)
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#define MICROPY_COMP_CONST (0)
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#endif
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#ifndef MICROPY_PY_SYS_PLATFORM
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#if defined(__APPLE__) && defined(__MACH__)
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#define MICROPY_PY_SYS_PLATFORM "darwin"
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#else
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#define MICROPY_PY_SYS_PLATFORM "linux"
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#endif
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#endif
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#define MICROPY_PY_SYS_MAXSIZE (1)
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#define MICROPY_PY_SYS_STDFILES (1)
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#define MICROPY_PY_SYS_EXC_INFO (1)
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#define MICROPY_PY_COLLECTIONS_DEQUE (1)
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#define MICROPY_PY_COLLECTIONS_ORDEREDDICT (1)
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#ifndef MICROPY_PY_MATH_SPECIAL_FUNCTIONS
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#define MICROPY_PY_MATH_SPECIAL_FUNCTIONS (1)
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#endif
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#define MICROPY_PY_MATH_ISCLOSE (MICROPY_PY_MATH_SPECIAL_FUNCTIONS)
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#define MICROPY_PY_CMATH (1)
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#define MICROPY_PY_IO_IOBASE (1)
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#define MICROPY_PY_IO_FILEIO (1)
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#define MICROPY_PY_GC_COLLECT_RETVAL (1)
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#ifndef MICROPY_STACKLESS
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#define MICROPY_STACKLESS (0)
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#define MICROPY_STACKLESS_STRICT (0)
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#endif
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#define MICROPY_PY_OS_STATVFS (1)
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#define MICROPY_PY_UTIME (1)
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#define MICROPY_PY_UTIME_MP_HAL (1)
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#define MICROPY_PY_UERRNO (1)
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#define MICROPY_PY_UCTYPES (1)
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#define MICROPY_PY_UZLIB (1)
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#define MICROPY_PY_UJSON (1)
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#define MICROPY_PY_URE (1)
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#define MICROPY_PY_UHEAPQ (1)
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#define MICROPY_PY_UTIMEQ (1)
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#define MICROPY_PY_UHASHLIB (1)
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#if MICROPY_PY_USSL
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#define MICROPY_PY_UHASHLIB_MD5 (1)
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#define MICROPY_PY_UHASHLIB_SHA1 (1)
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#define MICROPY_PY_UCRYPTOLIB (1)
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#endif
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#define MICROPY_PY_UBINASCII (1)
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#define MICROPY_PY_UBINASCII_CRC32 (1)
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#define MICROPY_PY_URANDOM (1)
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#ifndef MICROPY_PY_USELECT_POSIX
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#define MICROPY_PY_USELECT_POSIX (1)
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#endif
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#define MICROPY_PY_UWEBSOCKET (1)
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#define MICROPY_PY_MACHINE (1)
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#define MICROPY_PY_MACHINE_PULSE (1)
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#define MICROPY_MACHINE_MEM_GET_READ_ADDR mod_machine_mem_get_addr
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#define MICROPY_MACHINE_MEM_GET_WRITE_ADDR mod_machine_mem_get_addr
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#define MICROPY_FATFS_ENABLE_LFN (1)
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#define MICROPY_FATFS_RPATH (2)
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#define MICROPY_FATFS_MAX_SS (4096)
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#define MICROPY_FATFS_LFN_CODE_PAGE 437 /* 1=SFN/ANSI 437=LFN/U.S.(OEM) */
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// Define to MICROPY_ERROR_REPORTING_DETAILED to get function, etc.
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// names in exception messages (may require more RAM).
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#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_DETAILED)
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#define MICROPY_WARNINGS (1)
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#define MICROPY_ERROR_PRINTER (&mp_stderr_print)
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#define MICROPY_PY_STR_BYTES_CMP_WARN (1)
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// VFS stat functions should return time values relative to 1970/1/1
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#define MICROPY_EPOCH_IS_1970 (1)
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extern const struct _mp_print_t mp_stderr_print;
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#if !(defined(MICROPY_GCREGS_SETJMP) || defined(__x86_64__) || defined(__i386__) || defined(__thumb2__) || defined(__thumb__) || defined(__arm__))
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// Fall back to setjmp() implementation for discovery of GC pointers in registers.
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#define MICROPY_GCREGS_SETJMP (1)
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#endif
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#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (1)
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#define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE (256)
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#define MICROPY_KBD_EXCEPTION (1)
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#define MICROPY_ASYNC_KBD_INTR (1)
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#define mp_type_fileio mp_type_vfs_posix_fileio
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#define mp_type_textio mp_type_vfs_posix_textio
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extern const struct _mp_obj_module_t mp_module_machine;
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extern const struct _mp_obj_module_t mp_module_os;
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extern const struct _mp_obj_module_t mp_module_uos_vfs;
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extern const struct _mp_obj_module_t mp_module_uselect;
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extern const struct _mp_obj_module_t mp_module_time;
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extern const struct _mp_obj_module_t mp_module_termios;
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extern const struct _mp_obj_module_t mp_module_socket;
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extern const struct _mp_obj_module_t mp_module_ffi;
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extern const struct _mp_obj_module_t mp_module_jni;
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#if MICROPY_PY_UOS_VFS
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#define MICROPY_PY_UOS_DEF { MP_ROM_QSTR(MP_QSTR_uos), MP_ROM_PTR(&mp_module_uos_vfs) },
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#else
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#define MICROPY_PY_UOS_DEF { MP_ROM_QSTR(MP_QSTR_uos), MP_ROM_PTR(&mp_module_os) },
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#endif
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#if MICROPY_PY_FFI
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#define MICROPY_PY_FFI_DEF { MP_ROM_QSTR(MP_QSTR_ffi), MP_ROM_PTR(&mp_module_ffi) },
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#else
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#define MICROPY_PY_FFI_DEF
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#endif
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#if MICROPY_PY_JNI
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#define MICROPY_PY_JNI_DEF { MP_ROM_QSTR(MP_QSTR_jni), MP_ROM_PTR(&mp_module_jni) },
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#else
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#define MICROPY_PY_JNI_DEF
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#endif
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#if MICROPY_PY_UTIME
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#define MICROPY_PY_UTIME_DEF { MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&mp_module_time) },
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#else
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#define MICROPY_PY_UTIME_DEF
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#endif
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#if MICROPY_PY_TERMIOS
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#define MICROPY_PY_TERMIOS_DEF { MP_ROM_QSTR(MP_QSTR_termios), MP_ROM_PTR(&mp_module_termios) },
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#else
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#define MICROPY_PY_TERMIOS_DEF
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#endif
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#if MICROPY_PY_SOCKET
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#define MICROPY_PY_SOCKET_DEF { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_socket) },
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#else
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#define MICROPY_PY_SOCKET_DEF
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#endif
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#if MICROPY_PY_USELECT_POSIX
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#define MICROPY_PY_USELECT_DEF { MP_ROM_QSTR(MP_QSTR_uselect), MP_ROM_PTR(&mp_module_uselect) },
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#else
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#define MICROPY_PY_USELECT_DEF
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#endif
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#define MICROPY_PORT_BUILTIN_MODULES \
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MICROPY_PY_FFI_DEF \
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MICROPY_PY_JNI_DEF \
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MICROPY_PY_UTIME_DEF \
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MICROPY_PY_SOCKET_DEF \
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{ MP_ROM_QSTR(MP_QSTR_umachine), MP_ROM_PTR(&mp_module_machine) }, \
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MICROPY_PY_UOS_DEF \
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MICROPY_PY_USELECT_DEF \
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MICROPY_PY_TERMIOS_DEF \
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// type definitions for the specific machine
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// For size_t and ssize_t
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#include <unistd.h>
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// assume that if we already defined the obj repr then we also defined types
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#ifndef MICROPY_OBJ_REPR
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#ifdef __LP64__
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typedef long mp_int_t; // must be pointer size
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typedef unsigned long mp_uint_t; // must be pointer size
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#else
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// These are definitions for machines where sizeof(int) == sizeof(void*),
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// regardless of actual size.
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typedef int mp_int_t; // must be pointer size
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typedef unsigned int mp_uint_t; // must be pointer size
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#endif
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#endif
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// Cannot include <sys/types.h>, as it may lead to symbol name clashes
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#if _FILE_OFFSET_BITS == 64 && !defined(__LP64__)
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typedef long long mp_off_t;
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#else
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typedef long mp_off_t;
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#endif
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void mp_unix_alloc_exec(size_t min_size, void **ptr, size_t *size);
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void mp_unix_free_exec(void *ptr, size_t size);
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void mp_unix_mark_exec(void);
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#define MP_PLAT_ALLOC_EXEC(min_size, ptr, size) mp_unix_alloc_exec(min_size, ptr, size)
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#define MP_PLAT_FREE_EXEC(ptr, size) mp_unix_free_exec(ptr, size)
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#ifndef MICROPY_FORCE_PLAT_ALLOC_EXEC
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// Use MP_PLAT_ALLOC_EXEC for any executable memory allocation, including for FFI
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// (overriding libffi own implementation)
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#define MICROPY_FORCE_PLAT_ALLOC_EXEC (1)
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#endif
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#ifdef __linux__
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// Can access physical memory using /dev/mem
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#define MICROPY_PLAT_DEV_MEM (1)
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#endif
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// Assume that select() call, interrupted with a signal, and erroring
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// with EINTR, updates remaining timeout value.
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#define MICROPY_SELECT_REMAINING_TIME (1)
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#ifdef __ANDROID__
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#include <android/api-level.h>
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#if __ANDROID_API__ < 4
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// Bionic libc in Android 1.5 misses these 2 functions
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#define MP_NEED_LOG2 (1)
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#define nan(x) NAN
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#endif
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#endif
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#define MICROPY_PORT_BUILTINS \
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{ MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mp_builtin_open_obj) },
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#define MP_STATE_PORT MP_STATE_VM
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#if MICROPY_PY_BLUETOOTH
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#if MICROPY_BLUETOOTH_BTSTACK
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struct _mp_bluetooth_btstack_root_pointers_t;
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#define MICROPY_BLUETOOTH_ROOT_POINTERS struct _mp_bluetooth_btstack_root_pointers_t *bluetooth_btstack_root_pointers;
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#endif
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#if MICROPY_BLUETOOTH_NIMBLE
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struct _mp_bluetooth_nimble_root_pointers_t;
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struct _mp_bluetooth_nimble_malloc_t;
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#define MICROPY_BLUETOOTH_ROOT_POINTERS struct _mp_bluetooth_nimble_malloc_t *bluetooth_nimble_memory; struct _mp_bluetooth_nimble_root_pointers_t *bluetooth_nimble_root_pointers;
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#endif
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#else
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#define MICROPY_BLUETOOTH_ROOT_POINTERS
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#endif
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#define MICROPY_PORT_ROOT_POINTERS \
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const char *readline_hist[50]; \
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void *mmap_region_head; \
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MICROPY_BLUETOOTH_ROOT_POINTERS \
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// We need to provide a declaration/definition of alloca()
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// unless support for it is disabled.
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#if !defined(MICROPY_NO_ALLOCA) || MICROPY_NO_ALLOCA == 0
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#ifdef __FreeBSD__
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#include <stdlib.h>
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#else
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#include <alloca.h>
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#endif
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#endif
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// From "man readdir": "Under glibc, programs can check for the availability
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// of the fields [in struct dirent] not defined in POSIX.1 by testing whether
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// the macros [...], _DIRENT_HAVE_D_TYPE are defined."
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// Other libc's don't define it, but proactively assume that dirent->d_type
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// is available on a modern *nix system.
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#ifndef _DIRENT_HAVE_D_TYPE
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#define _DIRENT_HAVE_D_TYPE (1)
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#endif
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// This macro is not provided by glibc but we need it so ports that don't have
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// dirent->d_ino can disable the use of this field.
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#ifndef _DIRENT_HAVE_D_INO
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#define _DIRENT_HAVE_D_INO (1)
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#endif
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#ifndef __APPLE__
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// For debugging purposes, make printf() available to any source file.
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#include <stdio.h>
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#endif
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#if MICROPY_PY_THREAD
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#define MICROPY_BEGIN_ATOMIC_SECTION() (mp_thread_unix_begin_atomic_section(), 0xffffffff)
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#define MICROPY_END_ATOMIC_SECTION(x) (void)x; mp_thread_unix_end_atomic_section()
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#endif
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#define MICROPY_EVENT_POLL_HOOK \
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do { \
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extern void mp_handle_pending(bool); \
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mp_handle_pending(true); \
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mp_hal_delay_us(500); \
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} while (0);
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#include <sched.h>
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#define MICROPY_UNIX_MACHINE_IDLE sched_yield();
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#endif // MICROPY_UNIX_MINIMAL
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