After commit 9a0aebc5fd,
the exclusion of qemu_x86_tiny is no longer and the "depends on"
option was removed. However, the comment about that remained.
Remove the comment as it is no longer valid.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Changed initial guess from a simple x/3 to dividing the exponent by 2.
This makes large or small numbers like 10e10 and 01e-10 converge in a few
loops.
Added a loop counter to ensure that the algorithm breaks out of the loop in
the case that the algorithm doesn't converge (toggling between two
numbers).
Added test cases for sqrt and sqrtf in libc. Tested with a range of numbers
between 10e10 and 10e-10. Verify good accuracy in test case.
Closes: #55962
Signed-off-by: Lawrence King <lawrencek52@gmail.com>
Picolibc has both recursive and non-recursive mutex uses. The bulk of the
library locking uses the global libc lock, which is a recursive mutex as
that greatly simplifies the implementation.
The only use of non-recursive mutexes is in the stdio code when dealing
with file system I/O via fopen.
Using mutexes for both APIs is valid; the assumption picolibc makes is that
the non-recursive mutexes are somehow cheaper or faster and should be
preferred. However, in Zephyr, recursive mutexes are the default and the
non-recursive locks for picolibc were implemented using semaphores.
Switch the non-recursive picolibc locks to just invoking the existing
recursive functions using mutexes. This avoids pulling in another lock
implementation, saving a bit of space.
This also lets the kernel.memory_protection.mem_map test work on
qemu_x86_tiny where the amount of memory available is 320kB and that is
nearly filled by this test case, leaving too little space for allocating
pages in the k_mem_map_unmap test.
Signed-off-by: Keith Packard <keithp@keithp.com>
Now that the gcc compiler driver uses the -T flag instead of -Wl,-T, we can
remove the hack here that kept the picolibc specs file from inserting the
picolibc linker script.
Signed-off-by: Keith Packard <keithp@keithp.com>
It is possible to build with the PICOLIBC_MODULE
with the POSIX arch targets which use the native
simulator as runner.
Update filtering accordingly.
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
It is possible to build with STDOUT_CONSOLE with
the embedded C libraries with the POSIX arch.
Narrow down the filtering accordingly.
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
So they depend or select on the right NATIVE_BUILD
instead of NATIVE_APPLICATION.
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
Provide a sensible default for the POSIX architecture,
as now it is possible to build with it.
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
The spin loop in _exit() needs a Z_SPIN_DELAY() for the
POSIX architecture, so it does not hang the whole
executable on that infinite loop but only the thread
that exit'ed.
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
The spin loop in _exit() needs a Z_SPIN_DELAY() for the
posix architecture, so it does not hang the whole
executable on that infinite loop but only the thread
that exit'ed.
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
This adds a few line use zephyr_syscall_header() to include
headers containing syscall function prototypes.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
portability.posix.common.arcmwdtlib test fails with ARCMWDT libc.
This path fixes the test.
STDIN_FILENO and others macroses are used in libc-hooks.c only. So they
defined localy.
Signed-off-by: Nikolay Agishev <agishev@synopsys.com>
Compiling using clang fails with following error:
error: unannotated fall-through between switch labels
[-Werror,-Wimplicit-fallthrough]
Actually, missing 'break' statement is not an error here because
the next label is 'default' which contains 'break' only. For the same
reason we can add it to silence the compiler.
Signed-off-by: Patryk Duda <pdk@semihalf.com>
This matches the size that would be used with the newlib_nano configuration
and allows several tests to complete which would otherwise fail due to
insufficient heap space.
Signed-off-by: Keith Packard <keithp@keithp.com>
arm, arc and riscv all have special cases for malloc arena alignment that
might be smaller than the minimum required for a C allocator. In
particular, the riscv value might actually be zero, which turns out to be
an invalid alignment value.
Make sure all of these have alignment that meets the C language
requirements for allocation alignment.
Signed-off-by: Keith Packard <keithp@keithp.com>
When using the Zephyr SDK toolchain, prefer the pre-built version of
picolibc over using the picolibc module. This will reduce the time it takes
to build applications.
Signed-off-by: Keith Packard <keithp@keithp.com>
BSD-3-Clause-UC is not a valid license name and spdx validator
generates a Warning! when detected. Most probably a typo from
old version of strtoll.c licenced as BSD-4-Clause-UC.
see commit: 570ed08
Signed-off-by: Lucian Zala <zala.lucian@gmail.com>
The malloc arena needs to be aligned to a suitable size on Risc-V, and the
Z_RISCV_STACK_GUARD_SIZE variable is a helpful proxy for what size that
is. However, that is not always a power of two, so round it up to make the
linker capable of performing the necessary allocation.
Signed-off-by: Keith Packard <keithp@keithp.com>
This function may be used by system libraries (like libstdc++), so instead
of gating compile on target language, always build this function and gate
API visibility in header files instead.
Signed-off-by: Keith Packard <keithp@keithp.com>
Not all xtensa targets define the top of usable RAM via the _heap_sentry
address; it looks like the list is limited to esp32, esp32s2, esp32s3 and
intel parts. The first three all define HAS_ESPRESSIF_HAL, so key the test
using that or SOC_FAMILY_INTEL_ADSP.
Signed-off-by: Keith Packard <keithp@keithp.com>
Instead of explicitly initializing the mutex at runtime, use
SYS_MUTEX_DEFINE to initialize it at build time instead.
Signed-off-by: Keith Packard <keithp@keithp.com>
Enable the common malloc implementation when using picolibc. Support
existing Picolibc configurations by respecting existing PICOLIBC_HEAP_SIZE
settings.
When PICOLIBC_HEAP_SIZE is set to a value other than -2, then
*always* set COMMON_LIBC_MALLOC_ARENA_SIZE to that value.
Signed-off-by: Keith Packard <keithp@keithp.com>
When using the common malloc implementation on systems not using the
minimal C library, allocate a reasonable default malloc heap according to
the following rules (adopted from the Picolibc heap size defaults):
* When an MMU is available, allocate 16kB.
* When USERSPACE is enabled for a device with an MPU require PoT alignment,
allocate 1024 bytes
* Otherwise, use all available memory.
Signed-off-by: Keith Packard <keithp@keithp.com>
Change the default value of MINIMAL_LIBC_MALLOC_ARENA_SIZE from 0 to an
otherwise invalid value of -2. This allows the common malloc code to
distinguish between an application which explicitly sets the malloc arena
to zero bytes from an application which does not set the variable at all.
When MINIMAL_LIBC_MALLOC_ARENA_SIZE is set to a value other than -2, then
*always* set COMMON_LIBC_MALLOC_ARENA_SIZE to that value. Emit a compile
warning to let the developer know that their application is using a
deprecated Kconfig variable.
This means that MINIMAL_LIBC_MALLOC_ARENA_SIZE now always overrides
COMMON_LIBC_MALLOC_ARENA_SIZE, but an application setting both will already
be getting a configuration warning for setting the DEPRECATED value
anyways, which should serve as an adequate indication to the user.
Signed-off-by: Keith Packard <keithp@keithp.com>
When CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE is set to -1, make the malloc
arena use all remaining RAM. When an MMU exists, allocate the arena at
startup using k_mem_map. Otherwise, compute the available memory
automatically and use that.
When an MPU is being used to manage the malloc arena, make sure the heap
respects any MPU alignment requirements. Otherwise, align the heap to
sizeof(double).
Signed-off-by: Keith Packard <keithp@keithp.com>
