-m68020 -fnobitfields != -mcpu32 ?

• Date: Mon, 14 Oct 1996 20:22:24 +1000 (EST)
• From:
  Timothy Potter <timbo@moshpit.air.net.au>
• Reply-To:
  Timothy Potter <timbo@moshpit.air.net.au>
• Content-Type: TEXT/PLAIN; charset=US-ASCII

Hello again everyone.  I've nearly got my GNU RTEMS m68k system up and 
going.  There is one little thing that has been niggling at me ever since 
I started.  

The Motorola CPU32 is nearly a 68020 lacking only the bitfield 
instructions and a couple of addressing modes (plus a couple of extra 
instructions).  Gas takes an option of -mcpu32 but there is no such 
option for gcc.  The closest I can come up with is -m68020 
-fnobitfields.  My question is will these options generate some illegal 
code which uses one of the unsupported 68020 addressing modes on a 
CPU32?  Or is it all taken care of in the assembly phase.  (I do have a 
-Wa,-m68360 flag passed to the assembler).

I hope someone has the answer to this - you guys have answered all my 
questions so far!


Thanks,

Tim Potter.

• Re: -m68020 -fnobitfields != -mcpu32 ?
• From: "Robert J. Brown" <rj@eli.wariat.org>

• Next: Re: -m68020 -fnobitfields != -mcpu32 ?
• Index: Cross gcc Mailing list
• Thread: Cross gcc Mailing list