On 12/01/2015 09:15 AM, Eduardo Habkost wrote:
On Tue, Dec 01, 2015 at 09:09:47AM -0800, Richard Henderson wrote:
On 11/30/2015 03:18 AM, Paolo Bonzini wrote:
Because this is always little endian, I would write it as uint8_t[16][16].

Maybe.  That isn't altogether handy for TCG, since we'll be wanting to bswap
these buffers (probably in uint64_t chunks).

X86XSaveArea will be used only when loading/saving state using
xsave, not for executing regular instructions.

... like the regular instruction xsave?


In X86CPU, the
data is already stored as XMMReg unions (the one with the
XMM_[BWDQ] helpers).

Of course. But those unions are arranged to be in big-endian format on big-endian hosts. So we need to swap the data back to little-endian format for storage into guest memory.

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