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Re: 16-bit code in GAS
- From: Alan Modra <amodra at bigpond dot net dot au>
- To: Mikulas Patocka <mikulas at artax dot karlin dot mff dot cuni dot cz>
- Cc: binutils at sources dot redhat dot com, bug-binutils at gnu dot org
- Date: Fri, 15 Aug 2003 23:49:19 +0930
- Subject: Re: 16-bit code in GAS
- References: <Pine.LNX.4.44.0308151532490.25593-100000@artax.karlin.mff.cuni.cz>
On Fri, Aug 15, 2003 at 03:44:13PM +0200, Mikulas Patocka wrote:
> The resulting instruction should have prefixes 66 and 67 and should have
> 32-bit address.
It certainly looks buggy. I would have expected that gas generate just
the data prefix and trim the address to 16 bit. Instead we get a 32 bit
address inserted into the instruction.
> How can I write 32-bit code that runs in a segment with default operand
> size 16 (without 'D' bit set)?
.code16
addr32 movl $0x12345678, 0xabcdef01
--
Alan Modra
IBM OzLabs - Linux Technology Centre