On Mon, Jun 24, 2019 at 02:08:50PM +0100, Vladimir Murzin wrote: > True, yet my observation was that elf2flt utility assumes that address > space cannot exceed 32-bit (for header and absolute relocations). So, > from my limited point of view straightforward way to guarantee that would > be to build incoming elf in 32-bit mode (it is why I mentioned COMPAT/ILP32). > > Also one of your patches expressed somewhat related idea > > "binfmt_flat isn't the right binary format for huge executables to > start with" > > Since you said there is no support for compat/ilp32, probably I'm missing some > toolchain magic?
There is no magic except for the tiny elf2flt patch, which for now is just in the buildroot repo pointed to in the cover letter (and which I plan to upstream once the kernel support has landed in Linus' tree). We only support 32-bit code and data address spaces, but we otherwise use the normal RISC-V ABI, that is 64-bit longs and pointers.
