Add new Kconfig option to enable -msave-restore flag for RISC-V
targets. This option can be used to reduce binary size by replacing
inlined register save/restore sequences with library calls.
Since these functions receive the pointer to reent structure, they
should set errno in it rather than using thread-local errno.
This didn't cause practical issues because console functions in IDF
are only called from threads, and in that case 'r' is a pointer to
the thread-local structure, so &errno is the same thing as
&__errno_r(r). Still, fixing this for consistency.
When CONFIG_VFS_SUPPORT_IO is disabled, _read_r and _write_r
implementations in syscalls.c are used to provide console I/O via
esp_rom_uart_tx_one_char/esp_rom_uart_rx_one_char.
When newlib opens a (FILE*) stream, it calls fstat to check if the
underlying file is character-oriented. In this case, it configures the
stream to use line buffering. Otherwise (or if fstat fails) the stream
is opened as block buffered.
Since fstat wasn't provided, stdin/stdout/stderr streams got opened in
block buffered mode. For console, we need line buffered output so that
the stream buffer is flushed each time a complete line (ending with
'\n') is sent to stdout or stderr.
Fix by implementing _fstat_r stub, setting st->st_mdoe=S_IFCHR.
Before newlib 3.3.0, <dirent.h> bundled in newlib did not include any
function declarations. Instead, the file included the platform-
specific <sys/dirent.h>. This inclusion was inside a C++ guard block.
ESP-IDF provided sys/dirent.h inside newlib component, and this file
contained all the necessary function and structure declarations.
Since da418955f5,
common function declarations have been added to <dirent.h> in newlib.
However, the inclusion of sys/dirent.h has been moved out of the C++
guard block. However we didn't notice this change and did not update
sys/dirent.h in ESP-IDF newlib component to and the now-required
C++ guards there.
This commit adds the missing C++ guards to the platform-specific
sys/dirent.h.
The declarations of common dirent.h functions are now present both in
<dirent.h> (provided by newlib) and in sys/dirent.h (provided by IDF).
We keep the declarations in sys/dirent.h for compatibility, since some
ESP-IDF files and applications may include <sys/dirent.h> directly,
rather than <dirent.h>.
Closes https://github.com/espressif/esp-idf/issues/7204
Workaround libc can be moved to flash thanks to KConfig macros.
However, the following functions: `itoa`, `memcmp`, `memcpy`, `memset`, `strcat`, `strcmp`, and `strlen` are always kept it in IRAM.
Enable shared stack watchpoint for overflow detection
Enable unit tests:
* "test printf using shared buffer stack" for C3
* "Test vTaskDelayUntil" for S2
* "UART can do poll()" for C3
This adds support for the retargetable locking implementation in
newlib 3. This feature will be enabled in the future toolchain builds.
With the present version of the toolchain, this code doesn't get used.
When _RETARGETABLE_LOCKING gets enabled, newlib locking implementation
will be modified as follows:
- Legacy ESP-specific _lock_xxx functions are preserved. This is done
because ROM copies of newlib in ESP32 and ESP32-S2 rely on these
functions through the function pointer table. Also there is some
code in IDF which still uses these locking functions.
- New __retarget_lock_xxx functions are introduced. Newlib expects
these functions to be provided by the system. These functions work
pretty much the same way as the ESP-specific _lock_xxx functions,
except one major difference: _lock_acquire receives the lock pointer
by value, and as such doesn't support lazy initialization.
- Static locks used by newlib are now explicitly initialized at
startup. Since it is unlikely that these static locks are used at
the same time, all compatible locks are set to point to the same
mutex. This saves a bit of RAM. Note that there are still many locks
not initialized statically, in particular those inside FILE
structures.
* Target components pull in xtensa component directly
* Use CPU HAL where applicable
* Remove unnecessary xtensa headers
* Compilation changes necessary to support non-xtensa gcc types (ie int32_t/uint32_t is no
longer signed/unsigned int).
Changes come from internal branch commit a6723fc
heap: ported tlsf allocator into multi heap
heap_host_tests: added tlsf allocator into host test
heap_host_test: update freebytes after using free
heap_tests: tlsf now passing on host tests without poisoning
multi_heap: added support for memalign using tlsf implementation
heap_caps: removed heap_caps_aligned_free
heap/test: fixed broken aligned alloc test build
heap: added poisoning pattern when blocks are being merged
heap/tests: added timing tests for memory allocation
heap: reduced tlsf structure overhead
heap/tlsf: made all short functions inside of tlsf module as inline to improve timings
heap: moved tlsf heap routines outside of flash memory
newlib: linked multiheap memalign with newlib memalign function
heap: moved block member functions to a separate file so multi_heap can use the functions
heap/test: improved the tlsf timing test
heap/test: added memalign on aligned alloc tests
heap: moved tlsf configuration constants to a separated file
heap: added random allocations test with timings
heap: modified the calculation of heap free bytes
heap: make aligned free true deprecated functions and update their documentation
heap: add extra assert after successive mallocs on small allocation host test
heap: remove legacy aligned alloc implementation.
performance: added malloc and free time performance default values
Spinlocks from spinlock.h do not disable the scheduler and thus cannot safely
be directly used as a locking mechanism. A task holding the lock can get
pre-empted, and at that point the new running task will also be allowed to
take the spinlock and access whatever it was protecting.
Another issue is that the task holding a spinlock could migrate to a different
core which in turn would cause the application to fail asserts. The current
implementation assumes the core that takes the lock is also the core that
releases it.
Closes https://github.com/espressif/esp-idf/issues/5762
* changing dependencies from unity->cmock
* added component.mk and Makefile.projbuild
* ignore test dir in gen_esp_err_to_name.py
* added some brief introduction of CMock in IDF
- Introduce system time function and concept of system time provider.
esp_timer is system time provider when present.
- Set the reference point for system time, g_startup_time.
- Use the system time functions in newlib instead of calling esp_timer
functions directly
esp_common/shared_stack: refactored the implemenation of shared stack function (still not working properly)
esp_expression_with_stack: refactored the shared stack function calling mechanism and updated the documentation
If the olddelta argument is not a null pointer, the adjtime function returns information
about any previous time adjustment that has not yet completed.
Closes: https://github.com/espressif/esp-idf/issues/5194
BSDs and Unices defined some non standardised functions and symbols used
for endianness handling: converting from Little Endian to Big Endian,
converting from Host to a specific representation, converting from a
specific representation to Host.
With this commit, a modified version of those symbols provided by
FreeBSD is imported.
The license of the imported code is still 2-Clause BSD.
Signed-off-by: Francesco Giancane <francesco.giancane@accenture.com>
Closes https://github.com/espressif/esp-idf/pull/4784
Programs and libraries using compiler and system information about
endianness often include the system header `<endian.h>`.
In `xtensa-gcc` compiler with `newlib` distribution, that file is located in
`<machine/endian.h>`; this means that `#include <endian.h>` would fail
at compile time.
This commit fixes the issue by adding a compatibility `<endian.h>`
header which in turn just includes `<machine/endian.h>`.
Signed-off-by: Francesco Giancane <francesco.giancane@accenture.com>
Merges https://github.com/espressif/esp-idf/pull/4784
esp2020r1 toolchain includes a nano.specs file, which instructs GCC to
substitute libc.a with libc_nano.a.
In the build system, this simplifies handling of the nano formatting
option, eliminating LIBC and LIBM global variables.
poll: use "select" not "esp_vfs_select" move to newlib
pread, pwrite, select, utime: remove from newlib. VFS and/or LWIP will
provide aliases for these functions.
