Bug #1668041 “x86 Floating point exceptions - incorrect support?...” : Bugs : QEMU

It seems that qemu does not correctly emulate the x86 support for optionally causing a floating-point exception (#FP) when, for example, dividing by zero. Reports such as: https://github.com/cloudius-systems/osv/issues/855 http://stackoverflow.com/questions/15134189/qemu-div-by-zero-mxcsr-register suggest that setting the exception mask in the fpu cw or mxcsr (e.g., using a function like feenableexcept() in the guest OS) does not generate floating point exceptions on divide by zero. The pro...