This matches behaviour with the x86 host runner that RSP isn't
guaranteed to be set to a valid memory location. Make sure when running
tests on ARM that it gets the same behaviour.
If any `sysconf(_SC_PAGESIZE);` errors then we can get bad values, make
sure to at minimum use the x86 page size.
Also changes a hardcoded page size to use the FEX pagesize define.
This is a different feature flag than regular AES as the default AES+AVX
only operates on 128-bit wide vectors.
With the newer `VAES` extension this is expanded to 256-bit.
FEXCore includes was including an FHU header which would result in
compilation failure for external projects trying to link to libFEXCore.
Moves it over to fix this, it was the only FHU usage in FEXCore/include
NFC
Which requires moving LinuxEmulation to its own independent folder as
well. Since both IRLoader and FEXLoader rely on it.
No functional change, just moves the the code around.
Lioncache