Copy loadable segments in an ELF file to a flat binary
Copy all segments:
elfcopyflat program.elf program.bin
Separate read-only and read-write segments:
elfcopyflat --if-not w program.elf program-ro.bin
elfcopyflat --if w program.elf program-rw.bin
elfcopyflat copies segments, while objcopy copies sections.
The most prominent difference is that if your ELF file is linked so that the ELF
file header and program headers are actually supposed to be loaded,
elfcopyflat will keep the headers whereas objcopy will throw them away
because they're not part of a section. This is the case for all usual ELF
binaries for Unix-like operating systems.
Also, if your ELF file has been stripped of section headers, objcopy will give
up and not copy anything. Such a binary can definitely still be loaded and run
though, and elfcopyflat will happily use the segment information to seek out
what to copy.
Oh and elfcopyflat only has ELF input and flat binary output.