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[Qemu-ppc] VSX registers definition question

From: Jacques Mony
Subject: [Qemu-ppc] VSX registers definition question
Date: Mon, 19 Aug 2013 19:31:07 +0000



In target-ppc/cpu.h, there is the following definition:


    /* VSX registers */

    uint64_t vsr[32];


However, according to PowerISA 2.06B, there should be 64 of them, of 128 bits size.


Moreover, they should be sharing content with FPR (32 first entries, 64 bits) and VSR (32 last entries).


What would be the best way to realign the array and make it map the same registers as FPR and VSR ? Would resizing the array break backward compatibility of saved VMs?



Jacques Mony


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