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ARMv8, ie, AArch64 is a redesign/new, and entirely 64 bit with legacy (32bit) support mode tacked on. The design was done to be able to remove legacy without an
by r00fus 6y ago
ARMv8, ie, AArch64 is a redesign/new, and entirely 64 bit with legacy (32bit) support mode tacked on. The design was done to be able to remove legacy without another redesign.
To my understanding, this is quite unlike AMD64 (ie, Intel's current 64 bit ISA licensed from AMD) - which extended x86.