Commit graph

3 commits

Author SHA1 Message Date
Flavio Ceolin
2d5b781e99 llext: Fix wrong check
In llext_copy_symbols the check after llext_read
was looking the result of llext_seek operation instead
of the read.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
2023-10-20 15:20:35 +02:00
Tom Burdick
c678f25bc1 llext: Fix a bug in section linking
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>
2023-10-13 16:47:02 +01:00
Tom Burdick
41e0a4a371 llext: Linkable loadable extensions
Adds the linkable loadable extensions (llext) subsystem which provides
functionality for reading, parsing, and linking ELF encoded executable
code into a managed extension to the running elf base image.

A loader interface, and default buffer loader implementation,
make available to the llext subsystem the elf data. A simple management
API provide the ability to load and unload extensions as needed. A shell
interface for extension loading and unloading makes it easy to try.

Adds initial support for armv7 thumb built elfs with very specific
compiler flags.

Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
Co-authored-by: Chen Peng1 <peng1.chen@intel.com>
Co-authored-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
2023-09-29 20:50:38 -04:00