On 18/10/2023 7:21 pm, Sebastian Huber wrote: > I tried to get a bit more familiar with the libdl. Is there some documentation > available? I tried the user manual, but I see only a work in progress page: > > https://docs.rtems.org/branches/master/user/tools/linker.html
There is this https://git.rtems.org/rtems-tools/tree/linkers/main-page.cpp which has not been moved across. > For example, I can use dlopen() to load an object file (ELF). For what do I > need > RAP files? RAP requires use of the linker. It has some issues that need to be addressed to be at the same level as the ELF loader. For example I have not looked into TLS and there is the failure of the tests in the testsuite (dl06). RAP is an intermediate format where a lot of the required linking can be done on the host and the file set you need for the target can be collected. This lets you have a golden base image and a single loadable application. > Can I load also archives? It seems this can be done through configuration > files. > Are there API calls to do this? Currently there is no API call available. One could be added if you feel it is required. I decided you need a valid file system for loading to work so a configuration file was the simplest method. Loading from archives is done via the /etc/libdl.conf file: https://git.rtems.org/rtems/tree/testsuites/libtests/dl10/etc/libdl.conf The file can be updated at runtime and it is checked on each load for changes. Note, I did some initial analysis for this at the time the change was made and if you use runlib on the archives before loading the symbol table for libraries like libc is manageable. Chris _______________________________________________ devel mailing list [email protected] http://lists.rtems.org/mailman/listinfo/devel
