Re: [Valgrind-developers] Absolutely mystifying problem with fxrstor

[Nicholas N. <nj...@ca...>]

On Mon, 28 Apr 2003, Julian Seward wrote:

> Help!  I'm stuck.  Is there some other magic constraints on
> fxrstor I need to know about?  I read the fine print in the P4
> documentation carefully, but I cannot see anything other than the
> 16-byte-alignment constraint.

I know nothing about fxrstor, but the docs do also say:

  Bit 6 and bits 16 through 32 of the MXCSR register are defined as
  reserved and should be set to 0.  Attempting to write a 1 in any of
  these bits from the saved state image will result in a general
  protection exception (#GP) being generated.

Worth checking?

N