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asan considers that memcmp(p, q, N) is permitted to access N bytes at each
of p and q, even for values of p and q that have a difference earlier.
Accessing additional values is frequently done in practice, reading 4 or
more bytes from each input at a time for efficiency, so when completing
"non_exist<TAB>" in the repl, this causes a diagnostic:

    ==16938==ERROR: AddressSanitizer: global-buffer-overflow on
    address 0x555555cd8dc8 at pc 0x7ffff726457b bp 0x7fffffffda20 sp 0x7fff
    READ of size 9 at 0x555555cd8dc8 thread T0
        #0 0x7ffff726457a  (/usr/lib/x86_64-linux-gnu/libasan.so.5+0xb857a)
        #1 0x555555b0e82a in mp_repl_autocomplete ../../py/repl.c:301
        #2 0x555555c89585 in readline_process_char ../../lib/mp-readline/re
        #3 0x555555c8ac6e in readline ../../lib/mp-readline/readline.c:513
        #4 0x555555b8dcbd in do_repl /home/jepler/src/micropython/ports/uni
        #5 0x555555b90859 in main_ /home/jepler/src/micropython/ports/unix/
        #6 0x555555b90a3a in main /home/jepler/src/micropython/ports/unix/m
        #7 0x7ffff619a09a in __libc_start_main ../csu/libc-start.c:308
        #8 0x55555595fd69 in _start (/home/jepler/src/micropython/ports/uni

    0x555555cd8dc8 is located 0 bytes to the right of global variable
    'import_str' defined in '../../py/repl.c:285:23' (0x555555cd8dc0) of
    size 8
      'import_str' is ascii string 'import '
Signed-off-by: Jeff Epler <jepler@gmail.com>

Signed-off-by: Jeff Epler <jepler@gmail.com>

A simple reproducer is:

   async for x in (): x

Before this change, it would cause an assertion error in mpy-cross and
micropython-coverage.

This has been under development since April 2017.  See #3034 and #6375.
Signed-off-by: Damien George <damien@micropython.org>

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

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

Following a refactoring of micropython-lib.
Signed-off-by: Damien George <damien@micropython.org>

With GCC 11 there is now a warning about array bounds of OTP-mac, due to
the OTP being a literal address.
Signed-off-by: Damien George <damien@micropython.org>

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

If digest is called then the hash object is put in a "final" state and
calling update() or digest() again will raise a ValueError (instead of
silently producing the wrong result).

See issue #4119.
Signed-off-by: Damien George <damien@micropython.org>

The 512k build does not have a filesystem so there is no reason to include
the filesystem-related modules.  This commit provides a custom manifest.py
for this board which no longer includes: _boot.py, flashbdev.py,
inisetup.py, upip.py, upip_utarfile.py.  This cuts the build down by about
9k of flash.
Signed-off-by: Damien George <damien@micropython.org>

This adds a coverage build and running of the test suite on a MIPS 32-bit
big endian architecture.  It uses the feature of qemu to execute foreign
code as though it were native to the system (using qemu user mode).  The
code compiled for MIPS will run under the qemu VM, but all syscalls made by
this code go to the host (Linux) system.

See related #7268 and #7273.
Signed-off-by: Damien George <damien@micropython.org>

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

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

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

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

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

The inline assembler code does not work for __ARM_ARCH == 7.
Signed-off-by: Damien George <damien@micropython.org>

This change consists mostly of changing and extending the required
definitions in mphalport.h.

- modified pin type from pin_obj_t to machine_pin_obj_t
- created machine_pin.c
- implemented basic version of make-pins.py to genertate pins.c/.h files
  automatically; the only alternate function currently supported is GPIO
- added af.csv files for all supported MCUs
- replaced pins.c/pins.h files with pin.csv for all boards
- implemented on/off/high/low/value/init methods
- Implemented IN/OUT/OPEN_DRAIN modes
- modified LDFLAGS for DEBUG build to get usefull .elf file for debugging

Signed-off-by: Philipp Ebensberger

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

This tests that FROZEN_MANIFEST works with cmake (on esp32 at least).
Signed-off-by: Damien George <damien@micropython.org>

So that the FROZEN_MANIFEST option in cmake works the same as make.
Signed-off-by: Damien George <damien@micropython.org>

Updates the zephyr docker image and SDK to the latest versions.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>

As the new default behaviour, this allows PyDFU to be used with all
devices, not just the ones matching a specific set of VID/PID values.  But
it's still possible to specify VID/PID if needed to narrow down the
selection of the USB device.
Signed-off-by: Tobias Thyrrestrup <tt@LEGO.com>

Leaving the bootloader from an IRQ (eg USB or I2C IRQ) will not work if
MBOOT_LEAVE_BOOTLOADER_VIA_RESET is disabled, ie if mboot jumps directly to
the application.  This is because the CPU will still be in IRQ state when
the application starts and IRQs of lower priority will be blocked.

Fix this by setting a flag when the bootloader should finish, and exit the
bootloader always from the main (top level) thread.

This also improves the USB behaviour of mboot: it no longer abruptly
disconnects when the manifest command is sent.
Signed-off-by: Damien George <damien@micropython.org>

RX and CTS are the input pins and pull-ups are enabled so they don't cause
a problem if left unconnected.  But the output pins don't need a pull up
(they were originally all configured with pull up in commit
8f7491a1).

If needed, the pull-ups can be disabled in Python using machine.Pin after
the UART is constructed.

See issue #4369.
Signed-off-by: Damien George <damien@micropython.org>

The DMA driver will turn off DMA if it hasn't been used for an amount of
time (to save power).  The SDIO driver for cyw43 WLAN was not informing the
DMA driver that it was using DMA and there was a chance that the DMA would
turn off in the middle of an SDIO DMA transfer.  The symptoms of this would
be printing of SDIO error messages and a failure to communicate with the
cyw43 WLAN module.

This commit fixes this issue by changing the SDIO driver to use the
dma_nohal_XXX API to initialise and start the DMA.
Signed-off-by: Damien George <damien@micropython.org>

Fixes issue #6643.
Signed-off-by: Damien George <damien@micropython.org>

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

This can be treated by the linker the same as R_X86_64_REX_GOTPCRELX,
according to https://reviews.llvm.org/D18301.
Signed-off-by: Damien George <damien@micropython.org>

"buses" is the widely accepted plural form of "bus".

Add details for Pin.init() value and alt arguments.

SysTick cannot wake the CPU from WFI/WFE so a hardware timer is needed to
keep track of ticks/delay (similar to the nrf port).

Fixes issue #7234.
Signed-off-by: Damien George <damien@micropython.org>