Re: 64-bit jiffies, a better solution take 2

[george anzinger <george@mvista.com>]

Russell King wrote:
> 
> On Sat, May 11, 2002 at 08:01:34AM -0700, george anzinger wrote:
> > #ifdef __ARMEB__
> > #include <linux/byteorder/big_endian.h>
> > #else
> > #include <linux/byteorder/little_endian.h>
> > #endif
> >
> > So, yes, given no hints on who or what configures __ARMEB__.
> > Is it always little endian?
> 
> Most sane people use ARM in little endian mode.  However, there are a few
> insane people (mostly from the Telecoms sector) who like to put the chips
> into the (broken) big endian mode.
> 
> We don't fully support big endian in the -rmk kernel (and therefore Linus'
> kernel) yet.

So, what to do?  For ARM and MIPS we could go back to solution 1:

+#if defined(__LITTLE_ENDIAN) || (BITS_PER_LONG > 32)
+char jiffies_at_jiffies_64[0];
+#elif ! defined(__BIG_ENDIAN)
+#ERROR "Neither __LITTLE_ENDIAN nor __BIG_ENDIAN defined "
+#endif

With this in the ld script file: 
jiffies = DEFINED(jiffies_at_jiffies_64) ? jiffies_64 : jiffies_64+4;

This would work no matter what endian was used.  If this is to be the ARM/ MIPS 
answer, what file should the #if... go in?
-- 
George Anzinger   george@mvista.com
High-res-timers:  http://sourceforge.net/projects/high-res-timers/
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