8.12 --arm_only

Enforces ARM-only code. The compiler behaves as if Thumb is absent from the target architecture.

The compiler propagates the --arm_only option to the assembler and the linker.

Default

For targets that support the ARM instruction set, the default is --arm. For targets that do not support the ARM instruction set, the default is --thumb.

Examples

armcc --arm_only myprog.c

Note

If you specify armcc --arm_only --thumb myprog.c, this does not mean that the compiler checks your code to ensure that no Thumb code is present. It means that --thumb overrides --arm_only, because of command-line ordering.

Related reference
8.7 --arm
8.177 --thumb
Related information
--16 assambler option
--32 assembler option
Order of options on the command line
Non-ConfidentialPDF file icon PDF versionARM DUI0472J
Copyright © 2010-2013 ARM. All rights reserved.