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Re: More LITTLE_ENDIAN_DATA ???'s

To: Barry Andreasen <BAndreasen at octavecomm dot com>
Subject: Re: More LITTLE_ENDIAN_DATA ???'s
From: Richard Henderson <rth at redhat dot com>
Date: Fri, 3 Aug 2001 17:26:34 -0700
Cc: gcc at gcc dot gnu dot org
References: <1693990345F95B4097152E25B4B38F974A6268@octexchange.nexussystems.net>

On Fri, Aug 03, 2001 at 05:26:39PM -0400, Barry Andreasen wrote:
> Can someone describe for me what the __LITTLE_ENDIAN_DATA__ directive does
> in gcc/config/sparc/sparc.h?

Err, nothing?  It's not a directive.  It exists for the compiled
program to test, not for the compiler to do anything with.

> What is the relationship between this and the __LITTLE_ENDIAN__ directove
> sprinkled throughout the code?

"sprinkled throughout"?  It appears exactly once.  Anyway, 

__LITTLE_ENDIAN__ means little-endian code and data,
__LITTLE_ENDIAN_DATA__ means big-endian code and little-endian data.

Some of the Fujitsu parts have these sorts of modes.
I don't think the TI or Ross parts do.

r~

References:
- More LITTLE_ENDIAN_DATA ???'s
  - From: Barry Andreasen

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