On 22/11/2018 23:04, José Soler wrote: > I am starting to use RTEMS applications, i.e. RAP files that are dynamically > loaded by rtems-rtl. After reading the documentation I found, something is > unclear to me and maybe somebody can help clarify: when creating the > application > with rtems-ld a base image has to be provided to resolve symbols, and I would > like to know whether the applications must always be created anew whenever the > base image itself is updated, or under some circumstances it is possible to > load > apps that were linked with a different (previous) base image (e.g. if the > actual > symbols that the applications needs have not been changed).
The binding between the application being loaded and the base image is just symbols. You can change either and be fine _if_ no "interfaces" have changed. The key to this is what "interfaces" means. I suppose the simple rule I can state is ... "Do not change any ABI settings or function or data signatures" The ABI settings and the function and data signatures are not visible to the RTL code and so not checked. The "ABI settings" are the machine flags to the compiler. Different builds of the tools for each part could be OK but it could also break in subtle ways. Chris _______________________________________________ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
