Date: Tue, 19 Jul 2016 12:37:09 -0700 From: Conrad Meyer <cem@freebsd.org> To: Ed Maste <emaste@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r303033 - head/share/man/man7 Message-ID: <CAG6CVpXh_BYR20pt_iD5M35NiecmaWshJjP9LRYwEoQtSVP7mg@mail.gmail.com> In-Reply-To: <201607191746.u6JHk9ov092270@repo.freebsd.org> References: <201607191746.u6JHk9ov092270@repo.freebsd.org>
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On Tue, Jul 19, 2016 at 10:46 AM, Ed Maste <emaste@freebsd.org> wrote: > Author: emaste > Date: Tue Jul 19 17:46:09 2016 > New Revision: 303033 > URL: https://svnweb.freebsd.org/changeset/base/303033 > > Log: > add an arch.7 man page with architecture-specific details > > Based on details collected on the wiki, at > https://wiki.freebsd.org/EdMaste/ArchitectureSpecifics > Further details to be added over time. > > Sponsored by: The FreeBSD Foundation > Differential Revision: https://reviews.freebsd.org/D7096 > > Added: > head/share/man/man7/arch.7 (contents, props changed) > Modified: > head/share/man/man7/Makefile > > ... > Added: head/share/man/man7/arch.7 > ============================================================================== > --- /dev/null 00:00:00 1970 (empty, because file is newly added) > +++ head/share/man/man7/arch.7 Tue Jul 19 17:46:09 2016 (r303033) > @@ -0,0 +1,171 @@ > ... > +.Ss Predefined Macros > +The compiler provides a number of predefined macros. > +Some of these provide architecture-specific details and are explained below. > +Other macros, including those required by the language standard, are not > +included here. > +.Pp > +The full set of predefined macros can be obtained with this command: > +.Bd -literal -offset indent > +cc -x c -Dm -E /dev/null > +.Ed > +.Pp > +Common type size and endianness macros: > +.Bl -column -offset indent "BYTE_ORDER" ".Sy Meaning" > +.It Sy Macro Ta Sy Meaning > +.It Dv __LP64__ Ta 64-bit (8-byte) long and pointer, 32-bit (4-byte) int > +.It Dv __ILP32__ Ta 32-bit (4-byte) int, long and pointer ILP32 was only added on CURRENT during the 11 timeframe (the r276479 3.5.0 import), and can't be relied upon for stable/10 or 9, FWIW. (Not useful for ports, for example.) Sure, it's probably okay that this manual page only describes the release it is present in. Best, Conrad
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