Date: Mon, 04 Oct 2010 21:45:50 +0100 From: spellberg_robert <emailrob@emailrob.com> To: David Brodbeck <gull@gull.us>, fbsd_questions <freebsd-questions@freebsd.org> Subject: Re: [fbsd_questions] i386 vs amd64, on intel_64 Message-ID: <4CAA3CFE.1060609@emailrob.com> References: <4CAA3030.3090001@emailrob.com> <AANLkTintm_XubwCCRNJci99Y4M6nwbFr=oiKqBw2%2Ba9M@mail.gmail.com>
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hmmm ..., you did not answer the question that i asked. per your statement, on i386, amd64 or both ? David Brodbeck wrote: > On Mon, Oct 4, 2010 at 12:51 PM, spellberg_robert <emailrob@emailrob.com> wrote: > >> q: if i install an "amd64" version on an "intel_64" platform, >> am i restricted to 16 64_bit registers and 48_bit pointers or >> can i compile for both cpu_models >> [ perhaps, with nothing more complicated than a compiler option ] ? > > > Take a look at gcc's -m32 and -m64 options. >
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