Add a CPUID emulation which announces AVX support, but don't enable it
yet.

Add support for the following instructions:

0F 01 D0 = XGETBV
VPUNPCKHQDQ r/m, rV, r ::: r = interleave-hi-64bitses(rV, r/m)
VPSRAW imm8, xmm2, xmm1 = VEX.NDD.128.66.0F.WIG 71 /4 ib
VSTMXCSR m32 = VEX.LZ.0F.WIG AE /3
VLDMXCSR m32 = VEX.LZ.0F.WIG AE /2
VPMULHW xmm3/m128, xmm2, xmm1 = VEX.NDS.128.66.0F.WIG E5 /r
VPERMILPS imm8, ymm2/m256, ymm1 = VEX.256.66.0F3A.W0 04 /r ib



git-svn-id: svn://svn.valgrind.org/vex/trunk@2384 8f6e269a-dfd6-0310-a8e1-e2731360e62c
4 files changed