From mboxrd@z Thu Jan  1 00:00:00 1970
From: "David A. Greene" <greened@eecs.umich.edu>
To: egcs@egcs.cygnus.com
Subject: egcs and bitfields
Date: Wed, 31 Mar 1999 23:46:00 -0000
Message-ID: <36E844B2.8DAEFAAF@eecs.umich.edu>
X-SW-Source: 1999-03n/msg00434.html
Message-ID: <19990331234600.csdokpT0fYHMsx0vIzttuHb8hH5LFm3ouJ6TBFzTQ4k@z>

I sent this question to the list a few days ago but got
no response.  Can someone please help me out?

I'm trying to figure out the alignment rules that egcs 
uses for bitfields under Linux 2.0.x.  It seems that egcs 
does not follow the System V ABI stardard.  Specifically, 
the part about not allowing bitfields to cross the 
alignment boundaries of their base types (i.e. int c:17 
should not cross a 32-bit boundary, but egcs allows it).  
Also, bitfields declared "int" are treated as signed by 
egcs while the System V ABI indicates they are unsigned.

What ABI is egcs conforming to?  I need some detailed 
information as we need to interface to code compiled by
egcs.

Thanks!

                                -Dave