Restrictions
Execute-only code must be T32 code.
Execute-only code is only supported for:
- Processors that support the Arm®v8‑M architecture, with or without the Main Extension.
- Processors that support the Armv7‑M architecture, such as the
Cortex®‑M3.
If your application calls library functions, the library objects included in the image are not execute-only compliant. You must ensure these objects are not assigned to an execute-only memory region.
Note:
Arm does not
provide libraries that are built without literal pools. The libraries still use literal
pools, even when you use the -mexecute-only option.
Note:
Link Time Optimization does not
honor the armclang
-mexecute-only option. If you use the armclang
-flto or -Omax
options, then the compiler cannot generate execute-only code and produces a warning.
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