Sets up memory partitions and allows for the partitions to be added to a
memory domain after loading an extension. This allows for applying
memory protection attributes to all of the needed memory regions an
extension requires to execute code correctly.
Currently only works when usermode is enabled as otherwise memory
protection APIs are unavailable.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
The platform key using arch + simulation better provides coverage of
unique architectures. Adds a testcase for writable module builds and
loading which was uncovered previously and would've led to a failure on
xtensa as xtensa currently requires writable storage.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
In preparation for multiple tests, move the current hello_world test
to its own subdirectory. Also, merge the llext compilation in the
parent CMakeLists.txt.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
Make it so LLEXT_TEST_HELLO is enabled by default, and it is actually
compiled only when the config is enabled.
The check for MODULES==y and LLEXT_TEST_HELLO!=m is redundant, as the
Twister machinery already causes an error when Kconfig flags specified
in the YAML file are coerced to different values.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
This patch defines a generic function that encapsulates all the
architecture-specific machinery needed to compile llexts from source
files. Current tests are updated to use this function.
Output and source files must be specified using the OUTPUT and SOURCES
arguments. Only one source file is currently supported.
Arch-specific flags will be added automatically. The C_FLAGS argument
can be used to pass additional compiler flags to the compilation of
the source file.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
Extensions should be able to selectively export their global symbols.
Add a LL_EXTENSION_SYMBOL() macro for that. Change the present
.sym_tab to be a temporary symbol table of all global symbols in an
extensions, used only during linking for internal purposes. Add a new
.exp_tab symbol table to store symbols, exported by an extension
permanently.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
When relocating section symbol addresses the value where the
relocation is to be written is an offset into the section to load.
Simply rewriting it with the section address is not enough, we need
to write the address of the section with the offset into it.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
Adds a very simple hello world test case for llext. The loadable
extension is built and then included as a binary array into the test
making it very easy to load, debug, and inspect. The extension is
built using the same toolchain as the base image by default.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
