Date: Sat, 29 Jul 2006 13:10:21 -0700 From: Marcel Moolenaar <marcel@xcllnt.net> To: ppc@FreeBSD.org Subject: Definition of _ALIGNBYTES Message-ID: <CF6F2FC3-73E4-4A29-AA5A-0B85CE89521C@xcllnt.net>
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All, In /usr/include/sys/param.h (or src/sys/powerpc/include/param.h), _ALIGNBYTES is defined as (sizeof(int) - 1), or 3. It is supposed to represent the mask used by ALIGN() to yield an alignment suitable for all types. The alignment of the double, long long, and long double types is 8, which would imply that _ALIGNBYTES should be 7. All platforms, except i386, have this "right". I don't know how vital this definition is, but I do know that increasing it yields an ABI breakage (I noticed that ssh(1) stopped working). The ABI breakage is not severe enough that you cannot increase and decrease it without being able to do a buildworld. My question: should we bump it up while powerpc is still tier 2? -- Marcel Moolenaar USPA: A-39004 marcel@xcllnt.nethome | help
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