User Commands                                          isainfo(1)

NAME
     isainfo - describe instruction set architectures

SYNOPSIS
     isainfo [ [-v] [-b | -n | -k]  | [-x]]

DESCRIPTION
     The isainfo utility is used to identify  various  attributes
     of  the  instruction  set  architectures  supported  on  the
     currently running system. Among the questions it can  answer
     are  whether  64-bit  applications are supported, or whether
     the running kernel uses 32-bit or 64-bit device drivers.

     When invoked with no options, isainfo prints the name(s)  of
     the  native  instruction  sets for applications supported by
     the current version of the operating  system.  These  are  a
     subset  of  the  list  returned  by  isalist(1).  The subset
     corresponds to the basic applications environments supported
     by the currently running system.

OPTIONS
     The following options are supported:

     -b       Prints the number of bits in the address  space  of
              the native instruction set.



     -k       Prints the name of the instruction set(s)  used  by
              the operating system kernel components such as dev-
              ice drivers and STREAMS modules.



     -n       Prints the name of the native instruction set  used
              by  portable  applications supported by the current
              version of the operating system.



     -v       When used with the- b, -k  or  -n  options,  prints
              more detailed information.



     -x       Prints instruction extensions  to  the  native  ABI
              which are supported by the platform.



EXAMPLES

     Example 1: Invoking isainfo on a 32-bit x86 Platform

     The following example invokes isainfo on a 32-bit x86  plat-
     form:

     example% isainfo -v
     32-bit i386 applications

     example% isainfo -k
     i386

     Example 2: Invoking isainfo on a System Running  the  64-bit
     Operating System on a 64-bit SPARC Processor

     The following example invokes isainfo on  a  system  running
     the 64-bit operating system on a 64-bit SPARC processor:

     example% isainfo
     sparcv9 sparc
     example% isainfo -n
     sparcv9
     example% isainfo -v
     64-bit sparcv9 applications
     32-bit sparc applications
     example% isainfo -vk
     64-bit sparcv9 kernel modules

     Example 3: Invoking isainfo -x on an AMD Opteron CPU

     The following example invokes isainfo with the -x option  on
     an AMD Opteron CPU:

     example% isainfo -x
     i386: fpu tsc cx8 sep cmov mmx ammx a3dnow a3dnowx fxsr sse sse2 pause

EXIT STATUS
     Non-zero        Options are not specified correctly, or  the
                     command is unable to recognize attributes of
                     the system on which it is running. An  error
                     message is printed to stderr.



ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcsu                     |
    |_____________________________|_____________________________|


SEE ALSO
     isalist(1),  uname(1),   psrinfo(1M),   sysinfo(2),   attri-
     butes(5), isalist(5)