mbed_minimal_putchar assumed that buffer being NULL meant that it
should print to a file. This caused a system crash when calling
snprintf with both buffer and stream set to NULL.
It is valid to call snprintf with a NULL buffer; nothing should
be outputted, but the string length should be measured.
* Optimise clearing by adding `nullptr` overload. This overload means
`Callback(NULL)` or `Callback(0)` will no longer work; users must
use `Callback(nullptr)` or `Callback()`.
* Optimise clearing by not clearing storage - increases code size of
comparison, but that is extremely rare.
* Reduce ROM used by trivial functors - share copy/destroy code.
* Config option to force trivial functors - major ROM saving by
eliminating the "operations" table.
* Config option to eliminate comparison altogether - minor ROM saving by
eliminating zero padding.
* Conform more to `std::function` API.
Define copy operators public and deleted rather declaring them private
and undefined. Will give immediate compilation errors rather than
delayed linking errors.
Musca-B1 is a Cortex-M33 based target with security extension enabled.
- ARM_MUSCA_B1 is the non-secure target running mbed-os.
- ARM_MUSCA_B1_S is the secure target running TF-M.
- TF-M sources were imported and patched in previous commits.
- TF-M secure bootloader (McuBoot) for MUSCA_B1 is submitted by a
pre-built binary.
- A post-build hook concatenates The secure and non-secure binaries,
signs it and then concatenates the bootloader with the signed binary.
Change-Id: I4b36290941b5f0bb7aa7c12dda2f38b5c1e39ae2
Signed-off-by: Tamas Kaman <tamas.kaman@arm.com>
Signed-off-by: Gabor Abonyi <gabor.abonyi@arm.com>
This code prevents the ARMC6 compiler/linker from removing
SUB_REALLOC/CALLOC symbols from image when LTO is enabled
Fixes below error:
L6137E: Symbol $Sub$$calloc was not preserved by the LTO codegen but is needed by the image.
In mbed_start_application() there was a code that was supposed to
set DISDEFWBUF to one when running a debug build. However, this code
was in the wrong place, as this function is only called from
bootloader.
Move the code to correct place so that standalone applications use it
as well.
For the reference of DISDEFWBUF bit, see
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0552a/CHDCBHEE.html
`SysTimer::set_wake_time` incorrectly assumed that the `SysTimer`s tick
count and the underlying HAL timer had the same zero base. This normally
holds, at least approximately, in RTOS builds where the HAL timer starts
from zero at the same time the SysTimer is initialised.
But in bare metal builds, the HAL timer could be started some time
before the SysTimer, giving a significant discrepancy.
Beyond that, there's no requirement for HAL timers to start from zero in
the spec.
Record the HAL timer start time to get the conversion right.
Adding a new target of HW development kit using [Samsung Exynos i S111](https://www.samsung.com/semiconductor/minisite/exynos/products/iot/exynos-i-s111/) module to Mbed-OS.
This will widen the HW choices of Mbed-OS enabled NB-IoT, GNSS and Security (eFuse, AES, SHA-2, PKA, Secure Storage, Security Sub-System, [PUF](https://en.wikipedia.org/wiki/Physical_unclonable_function)) modules.
Target Name: S5JS100
Co-authored-by: Ivan Galkin <ivan.galkin@samsung.com>
Co-authored-by: Seokwon Lee <swon.lee@samsung.com>
Co-authored-by: Zhizhe Zhu <zhizhe.zhu@samsung.com>
Co-authored-by: Xinyi Zhao <xinyi.zhao@samsung.com>
Enabled heap_and_stack test for baremetal.
Added a test to check that global variables are initialised.
In mbed_sdk_boot:
- Added initialisation for mbed_stack_isr_start/size and mbed_heap_start/size for all toolchains.
- ARM toolchain:
- Added call to mbed_toolchain_init() to initialise global variables.
- Moved microlib initialisation code from mbed_retarget.cpp to mbed_sdk_boot.c.
- IAR toolchain: there is no equivalent to a software init hook that can be called. __low_level_init() was used but since this function is called before RAM initialisation, it cannot be used to initialize global variables. Defined a new __mbed_init() function called from IAR startup file instead.
As the ARM compiler is in GNU compatible mode, it defines __GNU__ which
(based on pre-processor condition in mbed_printf_implentation.h)
causes the printf functions to be wrapped using _wrap_* instead of
$Sub$$*.
This commit modifies the pre-processor
conditions to check for __GNUC__last in order to correctly
substitute the printf functions depending on the toolchain in use.
It also gets rid of $Super$$* substitution as it is not needed. $Super$$
is used to identify the original unpatched functions.
Missing substitutions for ARM compiler internal optimized "printfs" are
also added.
GCC 9 and sufficiently-new Clang (including ARM Compiler 6.13) give us
access to the C++20 (draft) `is_constant_evaluated` test. Allows us to
restrict code to compile-time only.
This is particularly useful when using assembler intrinsics, which the
compiler cannot optimise or compile-time evaluate. It allows us to write
something like
constexpr uint32_t reverse_bits(uint32_t x)
{
if (is_constant_evaluated(x)) {
// C code to do calculation here
return x;
} else {
// an assembler intrinsic that cannot be optimised
return __RBIT(x);
}
}
This can then be totally compile-time given a constant input.
(In this example, ultimately it would be a good idea to include this
functionality in CMSIS's GCC `__RBIT`, which needs it because GCC
requires use of assembler. Clang implements `__RBIT` as a built-in,
meaning it can already compute it at compile-time, so does not benefit.).
- By default, Mbed OS build tools use standard C library for all supported toolchains.
It is possible to use smaller C libraries by overriding the "target.default_lib" option
with "small". This option is only currently supported for the GCC_ARM toolchain.
This override config option is now extended in the build tool for ARM toolchain.
- Add configuration option to specify libraries supported for each toolchain per targets.
- Move __aeabi_assert function from rtos to retarget code so it’s available for bare metal.
- Use 2 memory region model for ARM toolchain scatter file for the following targets:
NUCLEO_F207ZG, STM32F411xE, STM32F429xI, NUCLEO_L073RZ, STM32F303xE
- Add a warning message in the build tools to deprecate uARM toolchain.
- NewLib-Nano C library is not supporting floating-point and printf with %hhd,%hhu,%hhX,%lld,%llu,%llX
format specifier so skipping those green tea test cases.
* Deprecate RawSerial.
* Introduce UnbufferedSerial to provide unbuffered I/O by implementing
with a FileHandle interface for I/O streams.
* Add Greentea test for the UnbufferedSerial class.
Added missing mbed_error_initialize function call in bare metal boot code which is used
to retrieve the crash report from RAM in case of any previous abnormal re-boot but this function call is present in RTOS boot code.
For consistency with `std::shared_ptr`, and `mbed::Callback`, and as a
potential optimisation aid, give `SharedPtr` a distinct constructor for
`nullptr`.
Martin Kojtal
phst
Evelyne Donnaes
Rajkumar Kanagaraj
Anna Bridge
Kevin Bracey
Martino Facchin
Philipp Steiner
Tamas Kaman
Bartek Szatkowski
David Lin
Maciej Bocianski
Seppo Takalo
pea-pod
PARKJIHOON
Hugues Kamba
ccli8
Heath Petersen
Antti Kauppila
Filip Jagodzinski