linux-kernel - Re : Re : Re : Re : [PATCH] Compressed ia32 ELF file generation for loading by Gujin 1/3

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Message-ID: <965140.82745.qm@web26914.mail.ukl.yahoo.com>
Date:	Tue, 6 Feb 2007 22:19:44 +0000 (GMT)
From:	Etienne Lorrain <etienne_lorrain@...oo.fr>
To:	"H. Peter Anvin" <hpa@...or.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	vgoyal@...ibm.com, linux-kernel@...r.kernel.org
Subject: Re : Re : Re : Re : [PATCH] Compressed ia32 ELF file generation for loading by Gujin 1/3

H. Peter Anvin wrote:
> I've long wished that someone would do a proper 16-bit x86 port of gcc; 

> however, the .code16gcc is usually good enough, although it produces 
> code which is a lot bigger than it needs to be.

  It is only that much bigger if you compare to 16 bits integer compilers,

 but once you deal with 32 bits integers in real mode you have one extra byte

 out of the two - which is still better than dealing with dx:ax.

 Last time I compiled (long time ago) some piece of code with and without

 .code16gcc it was approx 15% bigger - approx what you get when optimising.

 Etienne.

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