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Re: [PATCH] x86: suppress emission of zero displacements in memoryoperands

From: Richard Henderson <rth at redhat dot com>
To: Dave Korn <dave dot korn at artimi dot com>
Cc: "'Jan Beulich'" <JBeulich at novell dot com>, binutils at sources dot redhat dot com
Date: Fri, 6 May 2005 12:24:11 -0700
Subject: Re: [PATCH] x86: suppress emission of zero displacements in memoryoperands
References: <s27b6b48.036@emea1-mh.id2.novell.com> <SERRANOwk2UfxhUIBSI00000267@SERRANO.CAM.ARTIMI.COM>

On Fri, May 06, 2005 at 02:56:52PM +0100, Dave Korn wrote:
> Nothing the user _explicitly_ specifies should ever be discarded IMO.
> What if someone wants to write self-modifying code that stores varying
> offsets into that field?

I agree, unfortunately the i386 assembler doesn't have the length
specifiers that the m68k assembler does.  So if you really wanted
to write self-modifying code, you'd have to write 0x12345678 or
some other constant that forces the size encoding you need.

r~

References:
- [PATCH] x86: suppress emission of zero displacements in memoryoperands
  - From: Jan Beulich
- RE: [PATCH] x86: suppress emission of zero displacements in memoryoperands
  - From: Dave Korn

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