Posted on December 16, 2014 at 17:37Ok, but If i add the jump table in the main, then how can i link it to the app??
Well this would depend a lot on the tools you're using, the portability expectations, and the necessity to have two separately compiled pieces of code calling backward and forward into each other.
If the loader is in Masked ROM, the case is a lot easier because things won't move. On an Cortex-Mx I'd be temped to build a function table that extends beyond the regular vector table, uses SVC, or a single entry point function with a switch/case.
http://www.rmbconsulting.us/jump-tables-via-function-pointer-arrays-in-cc
For GNU/LD there's -defsym, and defining a symbol directly in the sections portion of linker script. You might have to write a small script to extract addresses from the .MAP file of one component, and add them into the .LD of the other component(s), if you want to automate the linkage.
