From: Michael Meissner <meissner@osf.org>
To: ian@cygnus.com
Cc: gas2@cygnus.com, harmon@metronet.com
Subject: [harmon@metronet.com: GNU GAS i386 16 bit]
Date: Thu, 25 Aug 1994 05:56:00 -0000 [thread overview]
Message-ID: <9408251256.AA11697@pasta.osf.org> (raw)
In-Reply-To: <9408250416.AA13401@tweedledumb.cygnus.com>
| I know as little as possible about the i386, and I certainly know
| nothing about the differences between 16 and 32 bit mode. Can anybody
| on this list help? I'm sure that nobody at Cygnus plans to add
| support for 16 bit mode, unless, of course, we find somebody to pay
| for it.
Adding 16 bit support is probably straight forward (ie, the work isn't
simple, but once you learn your way around the sources, it isn't that
hard). You will probably have to have a global mode bit that says 16
or 32 bit instructions are being generated. Note, some object file
formats (notably ELF) on the 386 don't have relocation types for
16-bit relocations. All in all, it is probably a couple of months of
work.
| Ian
|
| Date: Wed, 24 Aug 1994 20:27:16 -0500
| From: Thomas Harmon <harmon@metronet.com>
| To: ian@tweedledumb.cygnus.com
| Subject: GNU GAS i386 16 bit
|
|
| Ian,
|
| My name is Thomas Harmon. I found your E-mail address in the 2.3
| version of GNU GAS. Please excuse me for bothering you. I would like to
| ask for your opinion on some modifications I would like to make to GAS.
|
| I am working on a major project which requires a cross-platform,
| x86 assembler, for both 16 and 32 bit code. That is where my problem lies,
| I know GAS does not currently support 16 bit code, but how much effort do
| you think it will take to add it? Is this being planned for GAS? If so,
| when do you think it will be done? If it looks like I'll need to add 16-bit
| support myself, please send me a list of things I'll need to check. I think
| I can figure it out from the 2.3 distribution, but I'd like to know about
| any special problems that are not immediately obvious.
|
| Thank you for your time.
|
| -----------------------------------------------------------------------------
| Thomas Harmon "He's no fun, he fell right over."
| harmon@feenix.metronet.com -- Four or Five Crazy Guys
| -----------------------------------------------------------------------------
|
|
|
|
next prev parent reply other threads:[~1994-08-25 5:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
1994-08-24 21:16 Ian Lance Taylor
1994-08-25 5:56 ` Michael Meissner [this message]
1994-08-25 6:28 ` Arthur Kreitman
1994-08-25 6:52 ` Michael Meissner
1994-08-25 7:53 ` Arthur Kreitman
1994-08-25 8:03 ` DJ Delorie
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