linux-kernel - Re: [x86 setup 13/33] Header file to produce 16-bit code with gcc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <108510B6-B9BE-49D4-BDCA-E25CA20CB29B@kernel.crashing.org>
Date:	Tue, 10 Jul 2007 16:16:29 +0200
From:	Segher Boessenkool <segher@...nel.crashing.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	andi@...stfloor.org, akpm@...ux-foundation.org
Subject: Re: [x86 setup 13/33] Header file to produce 16-bit code with gcc

> gcc for i386 can be used with the assembly prefix ".code16gcc" to  
> generate
> 16-bit (real-mode) code.  This header file provides the assembly  
> prefix.

This only works correctly with newer GCCs if you pass the
-fno-toplevel-reorder option (and it only works on older
GCC versions by accident).  This option however disables
certain optimisations; but perhaps that doesn't matter all
that much here.


Segher

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/