9.11. Handling exceptions on Thumb-capable processors


This section applies only to Thumb-capable ARM processors.

This section describes the additional considerations you must take into account when writing exception handlers suitable for use on Thumb-capable processors.

Thumb-capable processors use the same basic exception handling mechanism as processors that are not Thumb-capable. An exception causes the next instruction to be fetched from the appropriate vector table entry.

The same vector table is used for both Thumb-state and ARM-state exceptions. An initial step that switches to ARM state is added to the exception handling procedure described in The processor response to an exception.

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