Date:	Sun, 22 Aug 1999 21:02:35 -0300 (ADT)
From:	Peter Cordes <peter AT Cordes DOT Phys DOT Dal DOT Ca>
To:	pgcc AT delorie DOT com
Subject:	Re: PIII help required(I am not in the mailing list)
In-Reply-To:	<37C027A2.9301498E@lycosmail.com>
Message-ID:	<Pine.LNX.4.10.9908222048460.11564-100000@Cordes.Phys.Dal.Ca>
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Reply-To:	pgcc AT delorie DOT com
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 Pardon my ignorance, but what is xmm?  It is obviously not a typo,
because you cpuinfo says you cpu does mmx _and_ xmm.  I have heard of kni,
the Katmai New Instructions.  cordes.phys.dal.ca (my dad's computer in his
office) is a PIII AT 450MHz, running RH6.0 w/kernel 2.2.11.  (RH6.0 comes
with binutils 2.9.1, and egcs 2.91.66, which are in use on cordes.)

 /proc/cpuinfo on cordes says:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: 00/07
stepping	: 2
cpu MHz		: 451.026999
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
sep_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 3
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 psn mmx osfxsr kni
bogomips	: 448.92


 The difference in the flags line is
(mine    ):flags:  fpu ... pse36 psn mmx osfxsr kni
(sastry's):flags:  fpu ... pse36 pn mmx fxsr xmm

 What's up with that?  psn vs. pn? osfxsr vs. fxsr?  dropped characters...?
 Also, his  model name  field says  Pentium III (Katmai), but mine says
00/07.  What's up with that, too?  especially since the one that says
Pentium III (Katmai) doesn't have kni in the flags?

 So, does anybody know about CPU versions?  Does anybody know whether gas
handles kni yet?   Prakash, are you trying to use kni?

#define X(x,y) x##y
Peter Cordes ;  e-mail: X(peter AT cordes DOT phys. , dal.ca)

On Sun, 22 Aug 1999, Adam Schrotenboer wrote:

> It may not be an issue w/ the compiler as much as w/  gas. (I may be wrong, I
> don't do asm programming, the only asm I ever learned was a piece of machine
> code for rebooting a computer when in virtual or real mode). Still, if gas
> doesn't recognize the SSE instructions, then it won't like it. AFAIK, gcc
> simply copies(emits??) the inline assembly into the resultant .S file fed into
> as.
> 
> GAS is a separate pkg from gcc, IIRC it's part of binutils. The current
> version is 2.91.xx (not sure what the xx is, it may even be a 2.91.xx.xx).
> Other asm gurus will be able to give a more complete answer to your q then I
> can.
> 
> Prakash Sastry wrote:
> 
> > hello all,
> > i am being asked to do some PIII specific assembly programming on linux.
> > i have Linux(RH6.0,)kernel 2.2.10 on this machine. when ever i try to
> > compile the assembly code with xmm operations it gives me an invalid
> > operands. the information on /proc/cpuinfo shows the following
> >
> > processor       : 0
> > vendor_id       : GenuineIntel
> > cpu family      : 6
> > model           : 7
> > model name      : Pentium III (Katmai)
> > stepping        : 2
> > cpu MHz         : 451.031072
> > cache size      : 512 KB
> > fdiv_bug        : no
> > hlt_bug         : no
> > sep_bug         : no
> > f00f_bug        : no
> > coma_bug        : no
> > fpu             : yes
> > fpu_exception   : yes
> > cpuid level     : 3
> > wp              : yes
> > flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
> > pat pse36 pn mmx fxsr xmm
> > bogomips        : 448.92
> >
> > the gcc version is :
> > gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
> >
> > any help how to solve the problem would help me a lot
> >
> > thanking you
> > prakash sastry
> > multimedia system lab
> > prakash AT mmsl DOT serc DOT iisc DOT ernet DOT in
> 

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