[task #6200] support mmx/xmm et al.

[Samuel Thibault]

URL:
  <http://savannah.gnu.org/task/?6200>

                 Summary: support mmx/xmm et al.
                 Project: The GNU Hurd
            Submitted by: sthibaul
            Submitted on: samedi 09.12.2006 à 01:53
                Category: GNU Mach
         Should Start On: samedi 09.12.2006 à 00:00
   Should be Finished on: samedi 09.12.2006 à 00:00
                Priority: 1 - Later
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
                  Effort: 0.00
Wiki-like text discussion box: 

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Details:

For enabling fast math instruction, support for FPU MMX/XMM state is needed.
As Roland said,

``would need new thread state flavor for "fpx" or whatever we call it. cf
linux asm/user.h  user_i387_struct vs  user_fxsr_struct former is what mach
can handle.  need to handle latter in ctx sw + user thread state flavor, then
enable cpu support bits (cr4 bit i think).''





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