19.04.2011 13:43, Alexander Klenin:
2011/4/19 Nikolai Zhubr<n-a-zh...@yandex.ru>:
Now, with the
introduction of 64-bit processors IIRC AMD took care of this problem by
providing some means to execute floating-point operations without the need
for traditional FPU register space, thus allowing to avoid the need to
save/restore FPU state. IIRC these are some _new_ opcodes, unavailable on
earlier CPUs.
Very interesting -- can you provide further detail on this?
I could not find anything relevant neither in vol.1 ch.6 nor vol.5 ch.2 of
AMD's APM -- is there something I overlooked?
Sorry, I looked into it several years ago, I don't have any links by
hand anymore.
However, Jonas seem to be more exact on this. I think he is right and
AMD just pushed deprecation of x87 in favour of SSE(2).
Nikolai
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