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Message-ID: <000401c1b360$3cb1c480$34e2a0c8@rjo.virtua.com.br>
From: "Pedro Izecksohn" <izecksohn AT yahoo DOT com>
To: <djgpp AT delorie DOT com>
References: <000a01c1b296$f2b0dc00$34e2a0c8 AT rjo DOT virtua DOT com DOT br> <3c66fcd7 DOT sandmann AT clio DOT rice DOT edu>
Subject: Re: Re: Assembly Question:
Date: Mon, 11 Feb 2002 21:56:45 -0300
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   It explains line 16, but not line 15. Because andl $-16,%esp is enough to
align the stack on a 16-byte boundary.

   ???

----- Original Message -----
From: "Charles Sandmann" <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
To: <djgpp AT delorie DOT com>
Sent: Sunday, February 10, 2002 11:05 PM
Subject: Re: Assembly Question:


> >    gcc makes the following .S code: (Without the lines numbers.)
>
> > 12 _main:
> > 13 pushl %ebp
> > 14 movl %esp, %ebp
> > 15 subl $8, %esp
> > 16 andl $-16, %esp
>
> >    What is the purpose of the lines 15 and 16 ?
>
> I believe it is to align the stack on a 16-byte boundary for better
> performance.
>
>


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