Date: Mon, 4 Oct 2010 14:37:12 -0700 From: David Brodbeck <gull@gull.us> To: spellberg_robert <emailrob@emailrob.com> Cc: fbsd_questions <freebsd-questions@freebsd.org> Subject: Re: [fbsd_questions] i386 vs amd64, on intel_64 Message-ID: <AANLkTintm_XubwCCRNJci99Y4M6nwbFr=oiKqBw2%2Ba9M@mail.gmail.com> In-Reply-To: <4CAA3030.3090001@emailrob.com> References: <4CAA3030.3090001@emailrob.com>
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On Mon, Oct 4, 2010 at 12:51 PM, spellberg_robert <emailrob@emailrob.com> w= rote: > =A0q: =A0 =A0if i install an "amd64" version on an "intel_64" platform, > =A0 =A0 =A0 =A0 =A0am i restricted to 16 64_bit registers and 48_bit poin= ters or > =A0 =A0 =A0 =A0 =A0can i compile for both cpu_models > =A0 =A0 =A0 =A0 =A0[ perhaps, with nothing more complicated than a compil= er option ] ? Take a look at gcc's -m32 and -m64 options.
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