From: "Ben Peddell" <killer DOT lightspeed AT bigpond DOT com>
Newsgroups: comp.os.msdos.djgpp
References: <1814460936 DOT 20030115105536 AT elins DOT ru>
Subject: Re: Problem with inline AT&T assembler
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Date: Wed, 15 Jan 2003 20:11:21 +1000
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

You should _never_ declare a register that is either input or output as
being clobbered.
GCC assumes that input registers are clobbered anyway, and declaring a
register as clobbered just makes that register unavailable as input or
output.

Bokarev Alexandr <bokarev AT elins DOT ru> wrote in message
news:1814460936 DOT 20030115105536 AT elins DOT ru...
> I have DJGPP ver.3.1 and try to use inline assembler.
> I write something like:
>
> int src;
> __asm__ ( \
> "some code in assembler"
> :
> : "S" (src)
> : "%esi" );
>
> and think that this code is right. But compiler says:
> "Error: can't find register in class 'SIREG' while reloading 'asm'"
> (or CREG, DIREG etc.).
> What must I do to fix this error ?
>
>