PROFMODLIST_SZ
prof_modlist.modules = PROFMODLIST_SZ;
prof_modlist.size = PROFMODLIST_SZ + (n_modules - 1) * PROFMOD_SZ +
off_nxt = PROFMODLIST_SZ + PROFMOD_SZ;
off_path = PROFMODLIST_SZ + (n_modules - 1) * PROFMOD_SZ;
#define MODLIST_FILLER (PROFMODLIST_SZ - sizeof (ProfModuleList))