While documenting the float conversion code, I found there was room
for some optimization. In doing so I added test cases to cover edge
cases e.g. making sure proper rounding is applied and that no loss
of precision was introduced. Compiled code should be smaller and
faster.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Use the core k_heap API pervasively within our tree instead of the
z_mem_pool wrapper that provided compatibility with the older mempool
implementation.
Almost all of this is straightforward swapping of one alloc/free call
for another. In a few cases where code was holding onto an old-style
"mem_block" a local compatibility struct with a single field has been
swapped in to keep the invasiveness of the changes down.
Note that not all the relevant changes in this patch have in-tree test
coverage, though I validated that it all builds.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Add an optimized realloc() implementation that can successfully expand
allocations in place if there exists enough free memory after the
supplied block.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Mark all k_mem_pool APIs deprecated for future code. Remaining
internal usage now uses equivalent "z_mem_pool" symbols instead.
Fixes#24358
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
The biggest required padding is equal to `align - chunk_header_bytes`
and not `align - 1` given that the header already contributes to the
padding.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Most of kernel files where declaring os module without providing
log level. Because of that default log level was used instead of
CONFIG_KERNEL_LOG_LEVEL.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
LLVM building for qemu_x86 appears to have an optimization bug where a
union that is assigned to hold values read from va_args() is inferred
to be a constant value, so is placed in ROM with an all-zero content.
Prevent this by packing the conversion state and the value union into
a single container structure that's stack allocated.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
When no message was get from kscan_msgq queue, the prev state
(x/y point) was processed as a new state. During process its
coordinates could be inverted or modified, depending on the
LVGL_POINTER_KSCAN_SWAP_XY, LVGL_POINTER_KSCAN_INVERT_X,
LVGL_POINTER_KSCAN_INVERT_Y or display orientation configuration.
In these cases, it could cause wrong input data.
Signed-off-by: Robin-Charles Guihéneuf <robin-charles@hotmail.fr>
Add support for abs with additional integer types.
This is needed to make LLVM quiet and stop warning about abs being used
with int64_t and such.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
So far data that went to stderr was simply dropped in case of minimal
libc. In case of newlib stderr was treated same like stdout
(e.g. fprintf(stderr, ...) was equivalent to fprintf(stdout, ...).
Extend filter on stream pointer to allow both stdout and stderr to pass
data to stdout hook (which is Zephyr console backend in most cases).
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Although flags with pointers are not defined behavior, there is a
desire to have them work, so add a test and fix the complete
implementation so it passes.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Simplify the code to increase readability, and fix right-padding
for %p.
Also, the compiled code is smaller with those changes applied.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
This fixes an issue where the %p specifier always generated "(nil)"
on SPARC. The failing test cases were:
tests/lib/sprintf/libraries.libc.sprintf
tests/kernel/common/kernel.common.misra
tests/kernel/common/kernel.common.tls
tests/kernel/common/kernel.common
The exact logic behind the issue has not been fully analyzed, but
it can be observed that this commit eliminates one occurrence of
undefined behavior. (Only allowed to read the last union field written.)
Signed-off-by: Martin Åberg <martin.aberg@gaisler.com>
The slab cmis_timer_slab is used to allocate objects of the type
"struct timer_obj", so it should be defined to use the compile-time
alignment requirement of "struct timer_obj", rather than 4.
Signed-off-by: Martin Åberg <martin.aberg@gaisler.com>
This commit eliminates a compilation error by passing int to va_arg
rather than mode_t on SPARC.
Newlib sys/_types.h defines mode_t for SPARC as:
typedef unsigned short __mode_t;
GCC 10.2.0 gave the following error message and suggested solution:
mqueue.c: In function 'mq_open':
mqueue.c:61:21: error: 'mode_t' {aka 'short unsigned int'} is promoted
to 'int' when passed through '...' [-Werror]
61 | mode = va_arg(va, mode_t);
| ^
mqueue.c:61:21: note: (so you should pass 'int' not 'mode_t' {aka 'short
unsigned int'} to 'va_arg')
Signed-off-by: Martin Åberg <martin.aberg@gaisler.com>
Using the same implementation as the rest of Zephyr reduces code size.
Update options and expected results for formatting test.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
All in-tree uses have been replaced by cbprintf, and the API was
private so there should be no out-of-tree users.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
The minimal libc provided by Zephyr can use the Zephyr system
implementation rather than have its own implementation.
When combined with CBPRINTF_NANO some sprintf tests must be
skipped as they assume a more capable libc. Add an overlay
that supports testing this non-default combination.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This commit adds a C99 stdio value formatter capability where
generated text is emitted through a callback. This allows generation
of arbitrarily long output without a buffer, functionality that is
core to printk, logging, and other system and application needs.
The formatter supports most C99 specifications, excluding:
* %Lf long double conversion
* wide character output
Kconfig options allow disabling features like floating-point
conversion if they are not necessary. By default most conversions are
enabled.
The original z_vprintk() implementation is adapted to meet the
interface requirements of cbvprintf, and made available as an opt-in
feature for space-constrained applications that do not need full
formatting support.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This reverts commit e812ee6c21.
This is the initial step towards replacing the core Zephyr formatting
infrastructure with a common functionally-complete solution.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Previously, ring buffer had capacity of provided buffer size - 1. This
trick was used to distinguish between empty and full states. It had one
drawback: ring buffer could not be used as a pool of equal sized buffers
(using ring_buf_put_claim and ring_buf_get_claim).
Reworked internals to use non wrapping head and tail. Since they are
non wrapping, there is no issue with distinguishing between empty and
full. Since this appraoch would be vulnerable to wrapping on 32 bit
boundary, added a mechanism which periodically reduces all indexes to
avoid 32 bit wrapping.
After this rework, buffer has one byte more capacity. Simple test shows
slight performance improvement.
Updated tests to reflect increased capacity and added test to check if
it is possible to continuesly allocated 2 buffers of half ring buffer
size.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
The compiler doesn't need help here.
For example, gcc creates this on Aarch64:
_ldiv5:
ldr x1, [x0]
mov x2, -3689348814741910324
movk x2, 0xcccd, lsl 0
add x1, x1, 2
umulh x1, x1, x2
lsr x1, x1, 2
str x1, [x0]
ret
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
abort() is an important runtime function, oftentimes used to signal
abnormal execution conditions in generic applications. Worse, they
may be used under such circumstances in e.g. compiler support
libraries, in which case lack of implementation of this function
will lead to link error.
Fixes: #29541
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
The z_libc_partition was only enabled when newlib is being used,
and/or stack canaries are needed. This adds a hidden option
where this partition can be enabled if needed, regardless of
whether newlib is used or stack canaries are needed.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
The code that made aligned_alloc work with the 4-byte heap headers was
requesting a block of the correctly padded size, and correctly
aligning the output buffer within that memory, but it was using the
UNALIGNED chunk size for the buffer as the final size of the block
with splitting off the unused suffix. So the final chunk in the
buffer was could be incorrectly returned to the heap and reused,
leading to overlap.
Compute the chunk size of the output buffer based on the
already-aligned output pointer instead.
Initial investigation and fix from Andy Ross <andrew.j.ross@intel.com>.
I reworked his fix, created a test case, and stolen his commit log.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Code should be using k_spinlock_key_t and not 'struct k_spinlock_key'.
With recent change to redefine struct k_spinlock_key we see this code
break because it wasn't using the correct type.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Default buffer mode is setup by fopen depending on isatty value.
Expect only 0, 1 & 2 to be tty for CONFIG_POSIX_API cases.
This way regular files are opened in block buffering mode (instead
of line buffering mode) which really speed up fread/fwrite
operations on FS.
Signed-off-by: Arnaud Mouiche <arnaud.mouiche@invoxia.com>
Using fopen() in application failed to build when configured with
CONFIG_NEWLIB_LIBC=y
CONFIG_POSIX_API=y
Signed-off-by: Arnaud Mouiche <arnaud.mouiche@invoxia.com>
Replace all calls to the assert macro that comes from libc by calls to
__ASSERT_NO_MSG(). This is usefull as the former might be different
depending on the libc used and the later can be customized to reduce
flash footprint.
Signed-off-by: Xavier Chapron <xavier.chapron@stimio.fr>
The eventfd implementation suffers from various shortcomings
and it is not thread safe.
This commit addresses the following aspects of eventfd:
* make read() and write() atomic in respect to each other
* POLLIN after creating eventfd with initval != 0 shall be set
* blocking and nonblocking modes shall have the same effect on poll()
* add support for POLLOUT
Signed-off-by: Rafał Kuźnia <rafal.kuznia@nordicsemi.no>
We must round up to the nearest microsecond in order to fulfill the
nanosleep(2) API requirement of sleeping for *at least* that many
nanoseconds.
The only platform with an upper-bound check right now is Nordic.
Fixes#28483
Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
Both operands of an operator in the arithmetic conversions
performed shall have the same essential type category.
Changes are related to converting the integer constants to the
unsigned integer constants
Signed-off-by: Aastha Grover <aastha.grover@intel.com>
When rotation is 90 or 270 degrees X and Y resolution values will also
be swapped, so we need to take that into account.
Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
Change how we handle the case of
CONFIG_CMSIS_V2_THREAD_DYNAMIC_MAX_COUNT=0 so that we don't create
a zero length array. Instead we can just ifdef out the code associated
with handling a dynamic stack allocation.
Fixes#28397
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Kscan coordinates are transformed in case display is rotated so that
frames of reference are aligned.
Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
Add new Kconfig options to allow kscan axes swap and inversion. These
options are useful to align display and touch frame of reference. If a
touch API is ever introduced these options could be moved there.
Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
Multiple calls of z_free_fd against fd with refcount equal 0 are causing
descriptor table entry leak by decrementing refcount below 0.
This patch prevents decrementing refcount below zero.
Signed-off-by: Grzegorz Kostka <grzegorz@mobility.cloud>
The vararg extraction for unmodified integers always used int, which
sign extends when assigned to the printk_val_t. Avoid the sign
extension for unsigned values.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Character class functions from ctype.h may be implemented as macros
where the argument is used to index an array of class flags. Using a
char value as an index produces diagnostics in some toolchains.
Explicitly cast the parameter to the type required by the API.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Nicolas Pitre