Some applications require loading extensions into the memory which does
not exist during the boot time and cannot be allocated statically. Make
the application responsible for LLEXT heap allocation. Do not allocate
LLEXT heap statically.
Signed-off-by: Alex Ivanov <alexivanov@google.com>
Export the currently used board name and (when applicable) qualifiers
and revisions to the EDK files. This information can be used by EDK
users who deal with multiple targets to differentiate between them.
Uses the existing 'zephyr_string' function to sanitize the strings
instead of a custom regex replace.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
Add APIs to inspect the contents of an ELF file loaded as an extension.
This is useful for applications that need to access the contents of the
extension in a more fine-grained way than the existing LLEXT APIs.
Use of these APIs requires the 'keep_elf_data' option to be provided via
struct llext_load_param to the 'llext_load()' call.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
Add a new section to the llext documentation that explains how to debug
extensions and how to address the issues that may arise when doing so.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
Some ARC processor configurations have separate memory for code (ICCM)
and for data (DCCM). Such configurations are unsuitable for LLEXT,
except for some quite special cases. For now, disable LLEXT and its
tests for these devices completely.
Signed-off-by: Ilya Tagunov <Ilya.Tagunov@synopsys.com>
Adds compiler flag(s) and some architecture-specific relocations
for ARC. No userspace support, doesn't support all relocations.
Signed-off-by: Lauren Murphy <lauren.murphy@intel.com>
This commit introduces architecture-specific ELF relocations for RISC-V,
in accordance with the RISC-V PSABI specification:
https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc
Also, the necessary compiler configurations for compiling LLEXT
extensions on RISC-V are added, and the llext tests are executed on
RISC-V targets.
Calling llext extensions from user threads in RISC-V is still
unsupported as of this commit.
Signed-off-by: Eric Ackermann <eric.ackermann@cispa.de>
Fixes bad usage of single backticks in lieu of double backticks for
rendering inline literals, or simple '*' for italics.
When appropriate, a better construct than double backticks has been
selected (ex. :file:, :kconfig:option:, :c:func:, ...), or proper :ref:
have been used if the original intention was to have a link.
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
Adds support for all relocation type produced by GCC
on AARCH64 platform using partial linking (-r flag) or
shared link (-fpic and -shared flag).
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
Add documentation for the new LLEXT APIs that allow to call the
initialization and cleanup functions of an extension.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
This patch improves the documentation for the llext subsystem, adding
information onhow to configure the llext subsystem, how to build
extensions using the Zephyr build system, and how to load and use these
in a Zephyr application.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
The existing index.rst file contains a mix of information about the
llext subsystem and the LLEXT Extension Development Kit (EDK). This
commit splits the existing text into two separate files, index.rst and
build.rst, as a first step on improving the documentation.
No change in text is done in this commit.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
