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From: prabhum@msys-tech.com (prabhu)
To: kernelnewbies@lists.kernelnewbies.org
Subject: How to identity processor architecture
Date: Thu, 27 Jan 2011 15:23:28 +0530	[thread overview]
Message-ID: <4D414098.5010706@msys-tech.com> (raw)
In-Reply-To: <21BC6FAC-048B-42A7-AA7C-4A89B2D0714A@cs.ucsd.edu>


>>  64-bit processors  have lm ("long mode") in the flags section 
>> of cpuinfo whereas   32-bit processors have not.
>> regards
>> Dharmvir Kumar
Thanks a lot folks.

Adding more detail on this.

Below detail helps to understand CPU architecture.
_*
*__*Finding CPU Arch*_

    $ grep flags /proc/cpuinfo | uniq | egrep -o -w "rm|tm|lm"

    Under "Flags" section in /proc/cpuinfo, you will find any of the 
flags "tm" or

    "rm" or "lm"

        * rm (Real Mode) means it is a 16 bit processor
        * tm (Transparent Mode) means it is a 32 bit processor
        * lm (Long Mode) means it is a 64 bit processor


Is this only way to find the processor architecture ????

Any C programming technique apart from using this /proc/cpuinfo detail?

Thanks,
Prabhu
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  reply	other threads:[~2011-01-27  9:53 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-27  6:07 How to identity processor architecture prabhu
2011-01-27  6:26 ` Enrico Granata
2011-01-27  6:31   ` arun kumar
2011-01-27  6:40   ` prabhu
2011-01-27  6:45     ` Mulyadi Santosa
2011-01-27  6:54       ` Enrico Granata
2011-01-27  7:15         ` dharmvir kumar
2011-01-27  7:24         ` Mandeep Sandhu
2011-01-27  8:20           ` prabhu
2011-01-27  8:22             ` Enrico Granata
2011-01-27  9:53               ` prabhu [this message]
2011-01-27 11:15                 ` Henry Gebhardt
2011-01-27 11:32                   ` Thirugnanam Balamurugan
2011-01-27 11:44                   ` Pravin Shedage
2011-01-27 12:33                     ` prabhu
2011-01-27  9:23           ` Busybox for powerpc doesnt compile Giriprasad Deviprasad
2011-01-27 10:11             ` yy Hong
2011-01-27 13:47               ` Anuz Pratap Singh Tomar
2011-01-29  5:50               ` Giriprasad Deviprasad
2011-01-30 13:23               ` Giriprasad Deviprasad
2011-01-27  7:07       ` How to identity processor architecture prabhu
2011-01-27  7:13         ` Mulyadi Santosa
2011-01-27 19:27       ` mindentropy
2011-01-27 20:01         ` Denis Kirjanov
  -- strict thread matches above, loose matches on Subject: below --
2011-01-27  3:28 Added about new kernel on old distro (was Re: most likely, i'll be giving a kernel talk at ottawa LUG next week) Mulyadi Santosa
2011-01-27  6:09 ` How to identity processor architecture prabhu
2011-01-26 18:08 most likely, i'll be giving a kernel talk at ottawa LUG next week Robert P. J. Day
2011-01-27  6:17 ` How to identity processor architecture prabhu

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