From: "Mark Cuss" <mcuss@cdlsystems.com>
To: <gcc-return-42668-mcuss=cdlsystems.com@gcc.gnu.org>
Cc: <gcc@gcc.gnu.org>
Subject: Re: Embedded Assembly and MMX in GCC
Date: Tue, 11 Dec 2001 13:00:00 -0000 [thread overview]
Message-ID: <012001c18286$3ca8f9a0$160e10ac@hades> (raw)
In-Reply-To: <org06hcxj1.fsf@free.redhat.lsd.ic.unicamp.br>
Yes, I did have the closing double quote - I forgot to type it into the
message......
If I put two %'s in front of mm0, the assembler returns "bad register name
`%%mm0` "
With the one %, it says "suffix or operands invalid for `movq`"
It seems that on an inline statement, I need to put only 1 % in front of reg
names if there are no input or output variables, and 2 %'s if there are...
Mark
----- Original Message -----
From: "Alexandre Oliva" <aoliva@redhat.com>
To: <mcuss@cdlsystems.com>
Cc: <grahams@redhat.com>; <gcc@gcc.gnu.org>
Sent: Tuesday, December 11, 2001 1:27 PM
Subject: Re: Embedded Assembly and MMX in GCC
> On Dec 11, 2001, "Mark Cuss" <mcuss@cdlsystems.com> wrote:
>
> > __asm__("movq $1, %mm0);
>
> I suppose you're missing a `"' after `%mm0'.
>
> Note that `%' is an active character in inline assembly, mostly like
> printf. If you want a `%' to get through to the output assembly,
> double it.
>
> --
> Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
> Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
> CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
> Free Software Evangelist *Please* write to mailing lists, not to me
>
next prev parent reply other threads:[~2001-12-11 20:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-03 19:13 gcc-ss-20011203 is now available gccadmin
2001-12-04 7:11 ` Andreas Schwab
2001-12-04 7:59 ` Joseph S. Myers
2001-12-04 12:16 ` guerby
2001-12-04 12:24 ` Joseph S. Myers
2001-12-04 12:30 ` Phil Edwards
2001-12-04 12:36 ` Joseph S. Myers
2001-12-04 12:46 ` Phil Edwards
2001-12-04 12:50 ` Assembly in Gcc Mark Cuss
2001-12-04 13:03 ` Graham Stott
2001-12-04 13:27 ` Mark Cuss
2001-12-04 19:00 ` Tim Prince
2001-12-11 11:14 ` Embedded Assembly and MMX in GCC Mark Cuss
2001-12-11 12:35 ` Alexandre Oliva
2001-12-11 13:00 ` Mark Cuss [this message]
2001-12-11 13:18 ` Alexandre Oliva
2001-12-11 14:09 ` Mark Cuss
2001-12-12 3:48 ` Andreas Schwab
2001-12-11 14:38 ` Craig Rodrigues
2001-12-04 19:54 ` gcc-ss-20011203 is now available Mark Mitchell
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