https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88745
--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Iain Sandoe from comment #5) > (In reply to Eric Gallager from comment #4) > > (In reply to Ian Lance Taylor from comment #3) > > > filetype.awk is just an AWK script. See > > > https://www.gnu.org/software/gawk/manual/gawk.html. A Mach-O file starts > > > with 0xfeedface (32-bit Mach-O) or 0xfeedfacf (64-bit Mach-O) in either > > > big-endian or little-endian order. > > > > Does the endianness actually matter? Neither the elf nor pecoff cases seem > > to be duplicated for their opposite endiannesses... Also are the octal > > escape sequences necessary? > > Mach-O files have 4 different magic numbers that indicate bit size and > endianness. I guess if the library only ever needs to work on target == host*** then swapping and endianness is irrelevant ... and the only test needed (as Ian said) is between 32b and 64b. === *** AFAIR, it's also built as a target library, which implies to me that cross-cases are relevant.
