[Feature request] Generate gcdump like report from linux core dump

I have a core dump, from machine with minimal RAM (512mb for system ram and tmpfs), I know that when there is minimal memory available, running gcdump will result in being killed by oom killer. But I can generate dump by `createdump` tool or by linux (SEGV). It would be nice to generate gcdump like info from core dumps. Like number of objects for type.