XP uses SYSENTER opcode, at least on P-III.
Max
----- Original Message -----
From: “Prokash Sinha”
To: “File Systems Developers”
Sent: Thursday, October 24, 2002 9:11 PM
Subject: [ntfsd] RE: Does XP support machines that does not support th
is
> The point of this question is to findout if the mode switching for
XP is
> still thru INT2E ( or Pentium II+ syscall/sysexit ) or thru
combination of
> both. XP hw requirement shows ( some 233 Mhz +, cant remember), and
pentium
> II stopped there. Note that syscall/sysexit is relatively new
> introduction…
>
> -prokash
>
> -----Original Message-----
> From: Prokash Sinha
> Sent: Wednesday, October 23, 2002 9:04 AM
> To: File Systems Developers
> Subject: [ntfsd] RE: Does XP support machines that does not support
th is
>
> On the IA32 domain. Not IA64…
>
> -prokash
>
> -----Original Message-----
> From: Curless, Jeffrey [mailto:xxxxx@concord.com]
> Sent: Wednesday, October 23, 2002 6:18 AM
> To: File Systems Developers
> Subject: [ntfsd] RE: Does XP support machines that does not support
this
>
> Considering XP supports the IA 64 I would have to say yes it does
> support machines that don’t support that.
>
> -Jeff
>
> -----Original Message-----
> From: xxxxx@garlic.com [mailto:xxxxx@garlic.com]
> Sent: Wednesday, October 23, 2002 9:21 AM
> To: File Systems Developers
> Subject: [ntfsd] Does XP support machines that does not support this
>
>
> #include <stdio.h>
>
> void main( )
> {
> unsigned int tmp, processorSignature;
>
> tmp = processorSignature = 0;
> asm mov eax, 1;
>
> asm cpuid;
> asm mov processorSignature, eax ;
> asm mov tmp, edx;
>
> if (tmp & 0x00000800 ) {
> if ( (processorSignature & 0x0fff3fff) < 0x00000633 )
> printf(" fast call is not supported\n");
> else
> printf(" fast call supported\n");
> }
>
> }
>
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></stdio.h>