Commit Graph

22 Commits

Author SHA1 Message Date
Jim Mussared 9be0623d4c shared/libc/string0: Don't deref args for n==0 case.
C99 says that strncmp has UB for either string being NULL, so the
current behavior is technically correct, but it's an easy fix to handle
this case correctly.

7.1.4: "unless explicitly stated otherwise in the detailed
description... if an argument to a function has ...null pointer.. the
behavior is undefined".

7.21.1: "Unless explicitly stated otherwise in the description of a
particular function in this subclause, pointer arguments on such a call
shall still have valid values, as described in 7.1.4".

Also make the same change for the minimal version in bare-arm/lib.c.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
2023-11-07 16:01:50 +11:00
Jim Mussared e910533012 bare-arm/lib: Add minimal strncmp implementation.
Required by upcoming qstr sorting.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
2023-10-30 11:10:02 +11:00
Damien George ad17d9f001 bare-arm/mpconfigport.h: Disable remaining optional features.
Signed-off-by: Damien George <damien@micropython.org>
2021-11-01 14:23:06 +11:00
Damien George b4de39c43c bare-arm/mpconfigport.h: Use MICROPY_CONFIG_ROM_LEVEL_MINIMUM.
To simplify the config.  This commit does not change the build.

Signed-off-by: Damien George <damien@micropython.org>
2021-11-01 14:17:22 +11:00
Damien George 136369d72f all: Update to point to files in new shared/ directory.
Signed-off-by: Damien George <damien@micropython.org>
2021-07-12 17:08:10 +10:00
Damien George 43a8c8178e bare-arm: Switch to use MICROPY_ERROR_REPORTING_NONE to reduce size.
Reduces size of this port by about 3300 bytes, and demonstrates how to use
this feature.

Signed-off-by: Damien George <damien@micropython.org>
2021-04-27 23:52:40 +10:00
Damien George 4fc2866f45 bare-arm: Clean up the code, make it run on an F405, and add a README.
This commit simplifies and cleans up the bare-arm port, and adds just
enough system and library code to make it execute on an STM32F405 MCU.

The mpconfigport.h configuration is simplified to just specify those
configuration values that are different from the defaults.  And the
addition of -fdata-sections and -ffunction-sections means the final
firmware is smaller than it previously was, by about 4200 bytes.

A README is also added.

Signed-off-by: Damien George <damien@micropython.org>
2021-03-19 14:20:26 +11:00
Damien George 2c5993c59e ports: Disable MICROPY_PY_ASSIGN_EXPR in bare-arm and minimal ports.
To keep these ports as minimal as possible.
2020-06-16 22:06:21 +10:00
Jim Mussared 073b9a5eb8 ports: Enable error text compression for various ports, but not all.
Enabled on: bare-arm, minimal, unix coverage/dev/minimal, stm32, esp32,
esp8266, cc3200, teensy, qemu-arm, nrf.  Not enabled on others to be able
to test the code when the feature is disabled (the default case).

Code size change for this commit:

   bare-arm:  -600 -0.906%
minimal x86:  -308 -0.208%
   unix x64:    +0 +0.000%
unix nanbox:    +0 +0.000%
      stm32: -3368 -0.869% PYBV10
     cc3200: -1024 -0.558%
    esp8266: -2512 -0.368% GENERIC
      esp32: -2876 -0.205% GENERIC[incl -3168(data)]
        nrf: -1708 -1.173% pca10040
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS
2020-04-05 15:02:06 +10:00
Damien George f8fc78691d py/mpconfig.h: Enable MICROPY_MODULE_GETATTR by default.
To enable lazy loading of submodules (among other things), which is very
useful for MicroPython libraries that want to have optional subcomponents.

Disabled explicitly on minimal ports.
2020-03-26 01:21:04 +11:00
Damien George 69661f3343 all: Reformat C and Python source code with tools/codeformat.py.
This is run with uncrustify 0.70.1, and black 19.10b0.
2020-02-28 10:33:03 +11:00
Damien George 3f39d18c2b all: Add *FORMAT-OFF* in various places.
This string is recognised by uncrustify, to disable formatting in the
region marked by these comments.  This is necessary in the qstrdef*.h files
to prevent modification of the strings within the Q(...).  In other places
it is used to prevent excessive reformatting that would make the code less
readable.
2020-02-28 10:31:07 +11:00
David Lechner e79424d672 ports: Allow overriding CROSS_COMPILE in a custom makefile.
Many ports already allow overriding CROSS_COMPILE.  This modifies the
remaining ports to allow it as well.
2019-12-27 23:53:16 +11:00
Damien George b45f9de809 bare-arm, minimal: Set CSUPEROPT=-Os to get minimal firmware size.
This option affects py/vm.c and py/gc.c and using -Os gets them compiling a
bit smaller, and small firmware is the aim of these two ports.  Also,
having these files compiled with -Os on these ports, and -O3 as the default
on other ports, gives a better understanding of code-size changes when
making changes to these files.
2019-09-17 11:43:52 +10:00
Damien George af20c2ead3 py: Add global default_emit_opt variable to make emit kind persistent.
mp_compile no longer takes an emit_opt argument, rather this setting is now
provided by the global default_emit_opt variable.

Now, when -X emit=native is passed as a command-line option, the emitter
will be set for all compiled modules (included imports), not just the
top-level script.

In the future there could be a way to also set this variable from a script.

Fixes issue #4267.
2019-08-28 12:47:58 +10:00
Paul Sokolovsky fbb8335084 py/objdict: Make .fromkeys() method configurable.
On by default, turned off for minimal/bare-arm. Saves 144 bytes on x86.
2018-12-13 01:20:55 +11:00
Paul Sokolovsky 5a91fce9f8 py/objstr: Make str.count() method configurable.
Configurable via MICROPY_PY_BUILTINS_STR_COUNT.  Default is enabled.
Disabled for bare-arm, minimal, unix-minimal and zephyr ports.  Disabling
it saves 408 bytes on x86.
2018-10-22 22:49:05 +11:00
Paul Sokolovsky 2da5d41350 py/objstr: Make % (__mod__) formatting operator configurable.
Default is enabled, disabled for minimal builds. Saves 1296 bytes on x86,
976 bytes on ARM.
2018-09-20 14:41:08 +10:00
Damien George 9df6451ec5 ports/{bare-arm,minimal}/Makefile: Only build with core source files.
These ports don't need anything from extmod so don't include those files
at all in the build.  This speeds up the build by about 10% when building
with a single core.
2018-02-22 12:48:51 +11:00
Damien George a3dc1b1957 all: Remove inclusion of internal py header files.
Header files that are considered internal to the py core and should not
normally be included directly are:
    py/nlr.h - internal nlr configuration and declarations
    py/bc0.h - contains bytecode macro definitions
    py/runtime0.h - contains basic runtime enums

Instead, the top-level header files to include are one of:
    py/obj.h - includes runtime0.h and defines everything to use the
        mp_obj_t type
    py/runtime.h - includes mpstate.h and hence nlr.h, obj.h, runtime0.h,
        and defines everything to use the general runtime support functions

Additional, specific headers (eg py/objlist.h) can be included if needed.
2017-10-04 12:37:50 +11:00
Damien George 4a93801c12 all: Update Makefiles and others to build with new ports/ dir layout.
Also renames "stmhal" to "stm32" in documentation and everywhere else.
2017-09-06 14:09:13 +10:00
Damien George 01dd7804b8 ports: Make new ports/ sub-directory and move all ports there.
This is to keep the top-level directory clean, to make it clear what is
core and what is a port, and to allow the repository to grow with new ports
in a sustainable way.
2017-09-06 13:40:51 +10:00