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 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 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 device 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 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.