:orphan:

.. title:: CONFIG_COMPILER_ISA_THUMB2

.. kconfig:: CONFIG_COMPILER_ISA_THUMB2

CONFIG_COMPILER_ISA_THUMB2
##########################

*Compile C/C++ functions using Thumb-2 instruction set*

Type: ``bool``

Help
====

.. code-block:: none

    This option configures the compiler to compile all C/C++ functions
    using the Thumb-2 instruction set.

    N.B. The scope of this symbol is not necessarily limited to the C and
         C++ languages; in fact, this symbol refers to all forms of
         "compiled" code.

         When an additional natively-compiled language support is added
         in the future, this symbol shall also specify the Thumb-2
         instruction set for that language.

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

(\ :kconfig:`USERSPACE <CONFIG_USERSPACE>` && \ :kconfig:`BOARD_QEMU_CORTEX_R5 <CONFIG_BOARD_QEMU_CORTEX_R5>`) || (\ :kconfig:`ISA_THUMB2 <CONFIG_ISA_THUMB2>` && \ :kconfig:`ARM <CONFIG_ARM>`)

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

Defaults
========

- n
- y

Kconfig definitions
===================



At ``<Zephyr Boards>/arm/qemu_cortex_r5/Kconfig.defconfig:14``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:22``

Menu path: (Top)

.. code-block:: kconfig

    config COMPILER_ISA_THUMB2
    	bool
    	default n
    	depends on USERSPACE && BOARD_QEMU_CORTEX_R5

----

At ``<Zephyr Architecture>/arm/core/aarch32/Kconfig:96``

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 COMPILER_ISA_THUMB2
    	bool "Compile C/C++ functions using Thumb-2 instruction set"
    	default y
    	depends on ISA_THUMB2 && ARM
    	help
    	  This option configures the compiler to compile all C/C++ functions
    	  using the Thumb-2 instruction set.
	  
    	  N.B. The scope of this symbol is not necessarily limited to the C and
    	       C++ languages; in fact, this symbol refers to all forms of
    	       "compiled" code.
	  
    	       When an additional natively-compiled language support is added
    	       in the future, this symbol shall also specify the Thumb-2
    	       instruction set for that language.

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