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Query related to function call compiled in AARCH32 execution state from AARCH64 bit space

Is it possible to access the function API compiled in AARCH32 execution state (EL0/EL1) from AARCH64 bit execution space (EL1/EL2/EL3) space in ARMv8 processor?

0 Zhifei Yang over 3 years ago

Yes, it is possible.
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0 42Bastian Schick over 3 years ago in reply to Zhifei Yang

To be precise: Not by direct call. IIRC you need to switch from AArch64 to AArch32 by way of an exception, do the AArch32 call and then return from exception.
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