:orphan:

.. title:: CONFIG_ISA_ARM

.. kconfig:: CONFIG_ISA_ARM

CONFIG_ISA_ARM
##############

*(No prompt -- not directly user assignable.)*

Type: ``bool``

Help
====

.. code-block:: none

    From: https://developer.arm.com/products/architecture/instruction-sets/a32-and-t32-instruction-sets

    A32 instructions, known as Arm instructions in pre-Armv8 architectures,
    are 32 bits wide, and are aligned on 4-byte boundaries. A32 instructions
    are supported by both A-profile and R-profile architectures.

    A32 was traditionally used in applications requiring the highest
    performance, or for handling hardware exceptions such as interrupts and
    processor start-up. Much of its functionality was subsumed into T32 with
    the introduction of Thumb-2 technology.

Direct dependencies
===================

\ :kconfig:`ARM <CONFIG_ARM>`

*(Includes any dependencies from ifs and menus.)*

Defaults
========

No defaults. Implicitly defaults to ``n``.

Symbols that select this symbol
===============================

- \ :kconfig:`ARMV7_R <CONFIG_ARMV7_R>`

Kconfig definition
==================



At ``<Zephyr Architecture>/arm/core/aarch32/Kconfig:66``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/arm/Kconfig:57``

Menu path: (Top) → ARM Options

.. code-block:: kconfig

    config ISA_ARM
    	bool
    	depends on ARM
    	help
    	  From: https://developer.arm.com/products/architecture/instruction-sets/a32-and-t32-instruction-sets
	  
    	  A32 instructions, known as Arm instructions in pre-Armv8 architectures,
    	  are 32 bits wide, and are aligned on 4-byte boundaries. A32 instructions
    	  are supported by both A-profile and R-profile architectures.
	  
    	  A32 was traditionally used in applications requiring the highest
    	  performance, or for handling hardware exceptions such as interrupts and
    	  processor start-up. Much of its functionality was subsumed into T32 with
    	  the introduction of Thumb-2 technology.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*