I'm using arm-elf-gcc to write embedded code targeting the NXP LPC2148. My application code will be loaded from an SD card into the MCU flash and run by an existing bootloader described in more detail here:
This bootloader contains a number of utility / library routines that I'd like to be able to use from my own application rather than duplicating the same code in my binary file. Since I've compiled & flashed the bootloader myself, I have access to all the linker output from the build process, including the maps, lists and symbol tables and I know what the function addresses are. What I need is a clean way to let the compiler/linker know this when I prepare the application code.
This sounds to me kind of like linking against a shared library, but since this is an embedded application I'm sure that the process is very different. I've done a bit of checking around but haven't found anything that looks similar enough to what I'm trying to do to be a good starting point.
Any suggestions on where I should start with this?