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Re: problem in extended asm


>>>>> "Denis" == Denis Zaitsev <zzz@anda.ru> writes:

 Denis> On Mon, Aug 09, 2004 at 08:13:00PM +0200, Bernardo Innocenti
 Denis> wrote:
 >> 
 >> 
 >> Dave Korn wrote: >>-----Original Message----- >>From: gcc-owner On
 >> Behalf Of Ankit Jain >>Sent: 09 August 2004 18:10
 >> > 
 >> > 
 >> >>hi
 >> >>
 >> >>a simple question: why the followinf instruction >>dosent work
 >> in gcc >>for(i=0;i<8;i++) >>{ >>asm("movq i(%1),%%mm0 \n" >> "movq
 >> %%mm0,(%0) >> :"=r"(x) >> :"r"(m)); //m is an array >>}
 >> > 
 >> > You forgot a closing quote.
 >> 
 >> And a \t after the \n.  Without it, the second movq would start at
 >> the beginning of the line and be interpreted as a label by the
 >> assembler.

 Denis> It's not true.  It will be interpreted correctly.  At least,
 Denis> for the x86 assembler.

The same goes for many other assemblers.  It depends on the syntax
rules -- some assemblers believe that a token in column 1 is a label,
some believe a token must be followed by colon (and often doesn't have
to be in column 1) to be a label.  GAS appears to be one such.

   paul


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