ISAINFO(1)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 sys‐
tem. 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 names 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 isal‐
ist(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 device drivers and STREAMS mod‐
ules.
-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 sup‐
ported by the platform.
EXAMPLES
Example 1 Invoking isainfo on a 32-bit x86 Platform
The following example invokes isainfo on a 32-bit x86 platform:
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.
SEE ALSOisalist(1), uname(1), psrinfo(1M), getisax(2), sysinfo(2),
attributes(5), isalist(5)
Feb 8, 2007 ISAINFO(1)
