I'm sure this has been discussed already... The Linux kernel currently uses among other things, -Wa,-32,-mgp64. The point is to use 32-bit ELF and 64-bit instructions. But nowadays binutils requires that the ABI explicitly match the width of GP registers. Can gas still do ELF32 in with 64-bit registers? If so, what the heck is the command-line magic? -- Daniel Jacobowitz MontaVista Software Debian GNU/Linux Developer
