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The prefetch abort handler is entered in the following state:
If the handler is capable of handling the exception then it can resume execution by performing a suitable exception return operation.
On 26bit OS versions, the CPU will be in SVC26 mode, with R14 containing the combined LR+PSR.
The kernel’s default handler will save a copy of the ARM integer registers (corresponding to the CPU mode the exception occurred in) to the Exception Registers Block, reset the stack pointers for all the privileged CPU modes, and then call OS_GenerateError to report a Prefetch Abort error.